CNC Milling Machining center.
About CNC Milling Machining Center. Year 2491 (1948) United States Air Force to use the milling machine (Milling Machine) type 3, the production of parts with precision and consistency. Year 2495 (April 1952) CNC machines. First developed by the research team. Tokyo Institute of Technology Asset left messages. (Massachusetts Institute of Technology, or MIT). Year 2498 (1955) test. CNC machine of 100 aircraft orders and production to the United States Air Force. Then it has evolved ever since. The milling machine is capable of reducing the time the tool is automatic (Automatic Tool Changer, ATC) of the downtime to change tools. Milling machine, which is known as "CNC Machining Center". Classifications of CNC machining center. Can be classified according to the directions for installing the spindle. 1. Vertical (Vertical Machining Center, VMC). The axis of the milling machine. 2. Horizontal (Horizontal Machining Center, HMC). The horizontal axis of the milling machine. Vertical milling machine is a horizontal, rather than the more uniform adoption, especially in small and medium sized parts. The large as well. The advantages of a horizontal surface is accumulated heat. Scrap metal is not deposited on the surface of the ground surface. That can cause a scratch on a piece of work. CNC Machining Center is able to change the installation location of the spindle is either horizontally or vertically. The CNC commands to change position. This is called the "Universal Machining Center", the machine is able to run several steps to complete within a single machine without having to install new parts.Limited to 5-6 in that time.
Divided by the number of axes of motion of the tool. Compared to the work as follows.
1. The second core half (2 ½ Axes). 3-axis machine can move, but moving at the same time as the 2-axis XY, XZ, YZ, etc. This machine is suitable for drilling (Drilling).
2. A 3-axis (3 ½ axes). Is a machine that can move simultaneously in three axes.
3. A 3-axis and a half (3 axes). It is found in the HMC in the axial rotation of the Indexing table B, then it moves to the X, Y and Z is a VMC to be mounted to rotate on its axis A is most 4. A 4-axis (4axes). Found by Chain Vice HMC axis 4 is the rotation of the table rotation (Rotary Table) in the axis B along with the motion vector (axis X, Y and Z), thus moving 4 cores at the same time it is. VMC is equipped with a rotating core of the core A is most
5. A 5-axis (5 axes). There is still a linear motion (Linear Motion) 3 axis (XYZ) were for. Angular motion (Angular Motion) or the two 5-axis machine and I can not mess with moving it to each of 5 million.
Machining Center 5-axis machine with movements in the X, Y, Z axes and rotation in the A and C.
In addition, CNC machines, some of it along the spindle axis and the total number of axis. In determining the axis of the machine CNC as standard EIA-267-B (Electronic Industries Association) has defined the core standards for all 14 axis comprising the axis is moving in a straight line 9 along axis rotation. The fifth axis. The main components of the Machining Center. Can be classified into four main sections. • a set of control (Controller). • mechanical movement (Drive mechanisms). • The Machine (Machine Body). • Automatic tool changing device (Automatic Tool Changer).
1. A set of control (Controller). Control of a Machining Center is a computer system that can store programs. Modify it. Computer program to enter and run the command in the program. Consists of a control panel (control panel) monitor (monitor), keyboard (keyboard or keypad) and the power to control the speed of the feed (Feed) and the speed of spindle (Spindle) and so on.
2. The mechanism of motion. And a feed motor (feed Motor), which is Kosovo motor (servo motor). Control the motion of the axes by using the ball screw (ball screw) into the angular motion (angular motion) is a linear motion (linear motion), with a position or range of motion and speed are controlled by signals from the controller. In addition to guiding rails (guide way) support the motion axes and so on. For machines that require high accuracy linear scale is (linear scale) as a device - or the sensor (sensor) location and movement in each axis.
3. Machinery. Structure of a shape suitable for use by category. The machine itself. The machine is part of my main pick. - Mechanical (machine bed) is the main structure of the machine. For devices and components. Machine. - Disc herniation or displayed Providence (saddle) on the chassis, such as a mobile X-axis or the Y. - Table (table) for the specimens. The table moves on the pillow. There is a T-groove (T-slot) for the clamping element to be attached to the table. The plane table is set with the pole. - Pillar (column) is the structure for installing a spindle. Vertical CNC Machining Center by creating a new pole, double (double Column) because they provide better accuracy. - The spindle (spindle) for installing the tools. Only a Super Game Link (tapered shank) or. HSS (high speed) by a spindle motor (spindle motor) drive spindle through a gear or belt or integrated into one set.
4. Device, the tool automatically (Automatic Tool Changer, ATC). Installed in a CNC Machining Center, both vertically (Vertical Machining Center, or VMC) and landscape (horizontal machining center) to change the tool from the tool (Tool Storage) or said McDonald's Magazine (Tool Magazine) type. ATC can be isolated as follows. - A chain (Chain-Type). - A rotating dish (Carousel-Type). The chain can be said to have more than one plate spinning. Both the arm holding the tool (Tool Changing Arm) between the tool and spindle. Some will not have to cost an arm or without arms (Armless).
The process of producing machines with CNC Machining Center. 1. The design work. The production is either by design or from the master. Production is in most cases. Are required to write into the CAD (Computer Aide Design) before there is a majority or if the resolution is not very complicated. It is not necessary.
2. To determine the process of milling and cutting tools. 3. Prepare NC programs to be used. 4. To monitor the program. 5. Prepare the cutting tool. 6. Enter into the program. 7. Optimize the cutting tool. 8. To hold the workpiece on the table. 9. Tests, continuous machining.
Mechanical advantages of CNC. 1. With high accuracy. 2. Quality, consistent parts. 3. The chance of damage or need to work less. 4. Can work 24 hours without stopping. 5. The speed of production. A high yield. 6. Can anticipate and plan to produce more accurate. It is not based on labor. 7. Can switch parts. A variety of shapes. Quick and easy. 8. When comparing the number of output are equal. CNC machines use less and less.
Storage space. 9. Is convenient for use in the manufacture of prototype parts that are modified frequently. 10. Pieces that are highly complex and multi-stage production. You can use the machine.
CNC machines can only be moved to another machine. 11. Reduce the amount of quality inspection. 12. Make it possible to use the tools or cutting tools more effectively. 13. The workers on the production line. The control unit can be controlled by a 3 to 5 computers. 14. A few accessories. Do not use the copy (Camplates or Templates). Disadvantages of machine CNC. 1. It is expensive to import from abroad. 2. A high repair. The repair is complicated because there are both hardware and software. Including computers and electrical equipment, electrode Knicks. 3. Hardware and software support (Option) is expensive and requires that manufacturers only. 4. Must have sufficient knowledge of basic mathematics of programming. 5. To the area. And facilities to the programmer. 6. Must enter the machine's not working consistently. 7. Not suitable to produce small. 8. The high maintenance costs. 9. Parts in some cases. Need from abroad. 10. Controller, in English. I need to learn. And have been trained to use. Computers and programming before using the machine. CNC Turning Machine. History Lathe CNC. Before a CNC lathe. Many models have been developed since ancient times. Machine has the capacity to turn a simple machine using a foot pedal to work. I have to add more definition to the motor and the power of the machine. On technology developed by the machine used to make the war more like airplane parts that have to be very detailed with CNC systems. Was used in a lathe.
The structure of the machine CNC. CNC lathe or a CNC Turning Center 2-axis motion base with the X-axis and Z axis and a uniform horizontal (Horizontal) lathe of this type. The cover is sought.
Mechanical or Machine Bad is generally a cast iron The slant on the slopes (Slant-Bed) to metal (Chip) the ground for easy and convenient to install the part. And other devices. Horizontal platform (Carriage Slide) is a platform for tool turret (Tool Turret-Terry Garrett) are said to move in the horizontal or X. Citadel Tool (Tool Turret) is a device for mounting a cutting tool or tool turret can be rotated to a position that requires him to use. By the number of tools (Tool Number), in general, can be rotated in either direction and has two cooling water pipes (Coolant) spray to the workpiece. A spindle (Spindle) and motor. (Spindle motors or Spindle Motor) for rotating the workpiece. The power transmission through gears or belts, or directly to the axis of the spindle. Structure of the spindle. Head called the Storm (Headstock). Device consists of a motor-driven moving force in the X and Z axis motors or feed (Feed Motor) and ball screw drive mechanisms (Ball Screw) and rail (Slide Way). Production work (Work Holding) is installed on the axis of the spindle. Lathe Chuck for a 3-handle (Three Jaw Chuck) by using hydraulics. In a piece in the center of the spindle itself (Self-Centering) that the classification as a solid (Hardened Jaw) and soft (Soft Jaw) is hard to capture the rough. The higher the compression strength of soft skin, turning it over. Result in fewer defects. Controller or the controller is a computer for entering and editing programs. And control of the machine.
Other accessories. The Seattle Storm's center or lean (Tail Stock) for the lean end of a long piece of work. The opposite of the spindle. The end result is the correct size. Prevent accidents and work out of Chuck. Seattle Storm can be programmed to move in and out of it. Steady Rest for supporting a work piece or pieces to keep the middle of the shell-shaped. Used when machining long parts. Waste material conveyor (Chip Conveyer) for transporting scrap metal (Chip) and dropped from the second tank continuously. The supporting parts (Part Catcher) is a box for the part. Turning then to enter the work out of the system to the ground. Support for small parts.
The packing and the rod surface (Bar Magazine and Feeder) for packing material, round pieces of long (3 to 5 meters) by entering through the central axis of the spindle. Eliminating the need for labor to cut and cut to the size of the piece by piece. Length and number of pieces. Depending on the size of the container (or Magazine). Equipment, transmission parts (Part Loader and Unload) is an arm holding a robotic arm (Robotic. Loading System) to work out of the machine will use less space to use. This device must be cut to desired size before it entered the arm.
The classification of machine CNC. Can be separated by the axis of the lathe spindle has a horizontal axis (Horizontal) and the vertical axis (Vertical) Lathes, most (95%) is horizontal. Divided by the number of axes of motion. Enter the number of tools and tool spindle as follows. 1. A 2-core (2-Axis) is said to have entered the machine in the X and Z.
2. A 3-axis (3-Axis), one type of machine tool axis, X, Z and C, commonly referred to as a C-shaped core (C-Axis) axis C in a hole or biting. The vertical and horizontal cross-section through the device for a bite or puncture (Driven Tools) installed on the toolbar. Making processes. In the piece out to the milling or drilling continue. 3. 2 or 3 axis with a 2-spindle (Two-Spindle) to move the workpiece from the spindle core (Main Spindle) to a spindle secondary (Sub Spindle or Opposed Spindle) in opposite can be machined on both face and back. In addition, a second spindle. Can also be used to rotate the pieces to help me with the main spindle. They act like a zero. Spindle C-axis may be a vice. 4. The two entered upon a 1 or a 2-spindle, each spindle has an axis C at each of the tool motion in the X and Z will perform two tasks simultaneously, such as the first turning, rough and Please enter the run up to the lathe. In addition, some modern lathes. Turning and milling can be done either in one complete process. Motion control of CNC machine tools. The CNC lathe is used commonly is machined 2-axis for motion control on the X axis is the axis along the diameter of the workpiece and the Z axis is the axis along the length of the surface structure and location of the installation tool of the machine. lathe Divided into 2 types. 1. A Flat Bed. 2. Slope Bed. 1) A machine Flat Bed. Flat Bed Lathe with a tool is under the control of the machine and spindle. (Or parts), or upon the front side of the machine. Most of the machine are controlled by hand, which control the movement of the tool can be easily observed.
2) A machine Slope Bed. The Slope Bed Lathe Tool is positioned behind the workpiece. Or under the control of the machine parts and tools. This type of tool or a turret lathe machines are moving in the corner Taแi The structure of the chassis at an angle greater than 45 degrees to the ground level. CNC lathes, most of the Slant Bed Slope Bed or structure of this material or the Chip drop and flow out of the machine easily. Click to view the full control of the machine Slope Bed.
The motion of turning a slant into pieces Slope Bed tools from the back. Pre-order. From the basics of forming or machining the part. CNC machine using any. The work can be separated into two main steps are summarized as a block diagram as shown in the figure below. Into two main sections. 1. The programming. Prepare the application. NC program must be in writing from drawing. Details of the work piece (Detail drawing or Part drawing) process of cutting conditions. And tools that will be used. 2. For operating CNC machines. CNC machining operations on the job is split into two operations on the controller. And operation of the machine. Operation of the controller must have a NC program and the tools required to enter into the controller. Segment operating the machine on. The raw material. And installation tools. Forming the base of the lathe. Machining is divided into three groups with the group is turning surface (External Cuts), the machined surface in the (Internal Cuts), and special machining (Special Cuts) by forming a basic process, ie. Turning in a lathe with the use of other accessories such as a signature, or if there is milling (milling) was mixed with Also known as the Mill-Turn Lathe and the milling machine. Or a 3-axis lathes with Driven Tools.
Technology to scour the metal conductors. (Electrical Discharge Machining Technology: EDM).
Currently in production of metal parts and industrial molds for molding a metal or plastic molds for them. All I have to go through the process of production using EDM or Electrical Discharged Machine is divided into two main types Sink-EDM and Wire-EDM, in which the Thai industry has used a lot. The erosion of metal conductors (Electrical Discharged Machining Technology) is a process that affects the quality of work is enormous. It is a process that must keep the details of the work piece. This is almost the last step. It is a process used to produce a very long time.
Electrical Discharge Machining; SINK - EDM. The history of Sink EDM.
EDM machines that we see today. Was discovered by Joseph Preistly 0.1770 subtle message in which he has conducted the electricity from the electrodes to the surface, he found that the corrosion has occurred.
Later in the year 1940 Soviet researchers have developed and made out that EDM is the foundation to the present, and in 1955 a Charmilles EDM machines in Europe have been showing up in the city of Milan. Principles.
The work by Park. Through the capacitance between the work piece (cathode) and a limited electrode side (anode) made under the liquid insulation, known as the General Electric Company (Dielectric) The Park will heat up to 8000. - 12000 degrees Celsius. The specimen was bankrupt and corrosion casting. By etching electrodes and Electrode (anode) to move the format specified in the NC program, which during the casting to dissolve the General Electric Company (Dielectric) will help reduce the temperature and metal removal caused.caustic Electrode. of soft materials such as copper and forming a tungsten carbide. must be good conductors of electricity. work as a conductor only.
Job of the Sink EDM. - Used in automobiles such as cars leave us open. Mold for auto parts. - Press mold for coins. - Make a mold for electronic parts. - Make a mold for molding plastic. History of Wire Cut EDM. Job of the Sink EDM. - Used in cutting sheet metal. - Of the electronic components. - The Punches and Dies.
CNC CUTTING MACHINE. Classifications of CNC CUTTING MACHINE. The materials in the industry. Can be divided into four types. 1. Plasma arc Cutting. 2. Oxyful Cutting. 3. Laser Cutting. 4. waterjet Cutting. The metal is a difficult task and takes a particularly high. If it is set very low or crash into a shape that can not be achieved by using a saw. This is a one-off. It depends on whether it is a work that demands attention is the need for speed. 1. Plasma arc Cutting. Cutting Plasma (Plasma Cutting) is a tool that can cut metal by dissociation of gas molecules at high temperature by charging the gas with electricity, then injected into a high speed at about 50,000 degrees Fahrenheit end up. Which can be used to cut sheet metal, 6 inches thick. Cutting sheet metal. Plasma cutting machine, cutting machine is high quality. There is a clean cut can pay off a variety of metals such as steel, stainless steel, aluminum cutting machines, plasma has been designed to facilitate the cutting of sheet metal to the exemplary quick. The size of the pieces that can cut 0.5-150 mm. Advantages - disadvantages Plasma Cutting. Advantages of Plasma arc Cutting. Plasma arc Cutting the time to cut faster than Oxyful Cutting and be able to cut the metal is thicker than that. It is cheaper than a Plasma arc Cutting Waterjet and Laser system for nitrogen and metals such as stainless steel, aluminum and nickel, the oxygen system is ideal for products such as carbon. And do not throw their sediments nitride. Disadvantages of Plasma arc Cutting. Plasma arc Cutting lifetime low. It depends on what kind of gas. Expertise of the user. And a trace of heat.Leaving the cut area. If the metal in water can help reduce the size of the grooves of the heat. 2. Oxy-ful Cutting. In the foreground is capable of cutting materials such as carbon steel, the gases are acetylene and oxygen Oxyful Cutting. To create a flame. Can be cut such as carbon and alloy steel with ease. However, it also creates Oxyful Cutting marks from the heat as well. The new boundaries need to be refurbished. The size of the pieces that can cut 3-2800 mm. Advantages - disadvantages Oxy-fuel Cutting. Advantages of Oxy-ful Cutting. Oxy-ful Cutting the head ฉad the head. Making it suitable for producing a high quantity of the Oxy-ful Cutting is also suitable for cutting materials that need to be machined with style. Disadvantages of Oxy-ful Cutting. Oxy-ful Cutting Cutting off more slowly than others, and also leave a trace of the heat in the cutting area is wider than the other. It also provides precision in cutting the profile of a Plasma, Water-jet and Laser.
3. Laser Cutting.
Light emitted is part of the melt and the gas blown to pieces missing from the laser light is light that is very dense with a diameter of 0.005 inches, the Laser Cutting is comprised of basic components. 5 parts including the laser, beam-focusing optics, material-handing system, heat exchanger and the control computer that will act to reduce the thermal heat exchange system.
The size of the pieces that can cut 0.1-50 mm. Advantages - disadvantages Laser Cutting. Advantages of Laser Cutting. Laser Cutting accuracy is very high and the footprint of the metal by heating with a small group of cutting temperature. Able to cut the carbon thickness of 1 inch and a resource-efficient than Plasma and Oxyful cut many kinds of steel, stainless and aluminum, copper, brass, Sun acrylic cut faster than Waterjet cutting. , Wire cut with a sharp little or no spines. Disadvantages of Laser Cuttin. The cost of using Laser cutting is higher than all the others. The thickness of the material to be cut is limited and there may be problems of cutting material that reflects light. 4. waterjet Cutting. Is to cut the material with the use of water can be classified into two types. 4.1 Pure Waterjets. The first is the traditional cutting of the Water Cutting technology into the industry. Which has been used in the mid-1950s, such as paper and wood industry by Dr. Norman Franz is the inventor. The concept of the pressure of water at high pressure. He must reduce water pressure to cut wood for them. But they are also try out the water between the machine-Pure Waterjets can be made of materials that can be removed by using a supersonic speed in cutting. Not caused by water pressure, but the speed of the currents that eroded the particles or grains of material to be lost. This is due to the pressure to speed with the nature of the structure of the nozzle. The nozzle has a small hole into the water. Typically at a pressure of 40,000 psi is approximately equal to the speed of a Mach 2. By injection into 3 types. 1. Sapphire (Sapphire). 2. Ruby (Ruby). 3. Diamond (Diamond). Most of us are used to make the sapphire nozzle. Which the injection is made with hands. The water quality is improved. Remained acceptable. Last for about 50-100 hours cut, but if used in Abrasive Waterjets usage will decrease to half of the Pure waterjets. The pomegranate is used in Abrasive Waterjets because of the nature of the currents that fits in the Abrasive Waterjets but not suitable for use with the Pure Waterjets For the sake of it are close to the sapphire. The diamond is the last for very long, about 800-1000 hours cut, but the price is about 10-20 times higher than other materials suitable to be used to run 24 hours a day and can also be used to clean diamonds. Ultrasonic cleaning method. Can then be brought back to new again. Pure Waterjet features are as follows. 1. The tide was out the diameter of 0.004 inch to 0.010 inch diameter. 2. The details of the cut in the form of a detailed geometry. 3. Be subject to a minimum during the cutting. 4. No heat from the cutting. 5. Can be cut to very large. 6. Can be cut to very small. 7. Take the time to cut a lot faster. 8. To cut soft materials such as fiberglass insulation, or it can be. 9. Use it to cut very small. 10. The materials are durable cutting. More beautiful than any other crop. 11. Can be easily installed. 12. Can work 24 hours a day. 2. Abrasive Waterjets. Formed in 1979 by Dr. Mohamed Hashish developed from the water-jet Dr.Norman Franz uses only water to cut only by Dr. Mohamed Hashish adding metal powder into the water to help cut the Abrasive. Waterjets is different from the Pure waterjets by not using water as the erosion of the material. I will use water as the particles accelerate the erosion of the material. Rather than using water alone, which Abrasive waterjets have higher performance than the Pure waterjets about 100 times and is intended for use in different at Pure waterjets are used to cut soft materials, while Abrasive waterjets are. used to cut hard materials such as metal, stone and ceramics. The nature of the nozzle is the same as Pure waterjets and abrasive, but with the addition of the Pure Waterjets system after it is abrasive enough to accelerate the speed of a rifle bullet. Abrasive sand used is solid. The size is selected. In general, we used a garnet abrasive is a hard, tough and features that are affordable. The size of a grain of sand from different places. Is responsible for that as well. 120 Mesh makes the skin smooth. 80 Mesh in general. 50 Mesh take the time to cut faster than the 80 which surface is not smooth enough. Abrasive waterjets have the following features. 1. Has come to cut the car in all its forms. 2. Do not heat up in the cut. 3. No mechanical stress on the material. 4. Promotion of the use of command is simple. 5. The water used to cut small diameter in the range of 0.02 inches to 0.05 inches. 6. The details of the cut in the form of a detailed geometry. 7. To cut some material. 8. Cutting material thickness up to 10 inches. 9. Caused the loss of material in one cut. 10. The installation is easy. 11. Use of force to cut a few (less than 1 LB., While the cut). 12. Be able to change the appearance of a single-head injector. Or multi-head easily. The size of the pieces that can cut 0.1-200mm.
Advantages - disadvantages Water-jet Cutting. Advantages of Waterjet Cutting. The cost for this system is cheaper than a Laser and it does not cause heat. Which is suitable to be used with solid metal. The disadvantage of Waterjet Cutting. The instruments used in this technology are higher than other technologies. Take the time to cut and not as fast as it should.
Co-ordinate measuring machine (CMM). Basic knowledge about the CMM. The CMM (Co-ordinate measuring machine), known in English as a machine that measures 3-axis electronic house that has the ability to measure the size of the piece. Quickly. The precision and accuracy is very high as well. Because of the work. Together with the computer. And relying on a computer screen display to activate and receive data from the measure, came back again on the screen - The pewter. Work productivity. PC Probe is a dark pink granular size 3.000 mm round ruby affixed to the ends of the joints that move up and down the Z axis is moved up to touch the parts where you need to measure. The movement of the machine is very smooth and soft. Due to the reduction of friction is the Air bearing based on air pressure to lift the body to float on the Probe in contact with the workpiece and will send a signal to the Controller of the machine for processing the position coordinates of the head. Probe the workpiece touch. Then this value will be sent to the display screen of the computer. The value of the machine. This will be measured out with high accuracy. As before, the program will be measured within the Calibrate Probe is the head compared with the Master ball prior to calculating the margin of error. From the end of the spring holding the lever in the joints of the Probe moves the Z axis due to the work piece. Probe heads to receive it before touching it. The collisions result in the laying of which very little. After comparing and calculating compensation, just the size of the Probe is a little smaller. In addition to the. It has a built-in thermometer. (Thermometer) to compensate for the discrepancy of the size of the coefficient of stretching and shrinking of the material. The result of the temperature outside as well. The CMM is used mostly in Thai industry.
Computer controlled machines, CMM or CNC CMM machine used to measure the size, shape and coordinates work on the high precision. By measurement at a resolution of about 2 micron meters, the main function of the CMM industry in general. Be used in conjunction with the Audit Quality Control System to determine the size and dimensions of the workpiece. Because it can be measured accurately and can be measured repeatedly and indefinitely. Elements of the CMM. 1. The system compensates for the expansion of the workpiece (Temperature Compensation) will be offset by the expansion of the workpiece when the temperature changes. To be measured with high accuracy. 2. Monastery.
2.1 The touch sensor system (Touch Trigger Probe) is the basic nature of the Probe is the point.
The touch sensors (Touch Trigger Probe).
2.2 System scanning probe tapping mode (Touch Scanning Probe) as a Probe to measure parts with complex shapes and different dimensions. A touch probe scanner (Touch Scanning Probe).
2.3 Laser scanning probe system (Laser Scanning Probe) is a Probe to measure the soft parts. I can not hit with it. The measurement is used to get information quickly. By measuring the beam with a Scan Laser.
Probe laser scanner (Laser Scanning Probe).
The difference between the scanning probe. And a touch sensor. A scanning probe. The advantage is that it can measure up to 500 dots-per-second data that is easy to understand and high data density. But there are drawbacks. Relatively costly to purchase and maintain. A touch sensor. Relatively costly to purchase and maintain. But there are drawbacks. Measurements can be quite slow. The data density is low. Inaccurate data may be obtained by gently cushioning material to be measured.
3. The head of the probe or sensor. The probe or sensor head is responsible for modifying the sensor to suit the operating conditions to be measured. The sensor head is set to make the CMM. Sensors to automatically switch from the command code (G Code). Stylus Changing. 4. The transmission and processing. Part of this transmission is responsible for covering the acquisition and evaluation unit of measurement of the CMM measurement data is processed into the screen. The incidence of errors in measurement. - Caused by the movement of the probe motion due to inertia of moving parts and too fast.
- Caused by the movement of the probe wavelength range at a speed that is not appropriate. Example: measure a Ø50 mm (2 in) ring gauge at 10 mm / sec (0.4 in / sec) using a CMM with performance of 2.5 + L/250.
Example: re-measure ring gauge at 100 mm / sec (4 in / sec) on the same CMM.
The worlds' between speed and Error.
In addition to the features mentioned above, when the machine is used in conjunction with CNC CMM machines, CNC Turn / Mill Machining Center and CAD (Computer Aided Design) / CAM (Computer Aided Manufacturing. Will result in the plant can produce complex shaped Spare Part.
Image shows the relationship between the CNC CMM with a CNC Turn / Mill Machining Center, after measuring the dimensions or shape of the piece was completed. The data in the Point Cloud, then take the data from the measurement to be tailored to the shape in the form of Solid and then to shape that has been converted into a command in the Machine parts using CAD /. CAM before the raw material into the machine to the Machine.
From the left hand is in the Point Cloud from the Scan works with CNC CMM, then the information has been furnished with a CAD program to be shaped in a Solid Form, then you can take. Machine has been working with a CNC Turn / Mill Machining Center next.
It can be shown and described in the above measurement also includes the ability to compare the size and shape of the workpiece before and after the repair as the repair process or a thermal process. To prove that these products have changed in size or not. Where such changes. May result in material damage to the workpiece during use. This is the advantage of agencies in order to have the tools to make the piece after the repair work, such as outside employment. Gives us a comparison between before and after the repair parts to repair it.
The figure shows a comparison of the size and shape of the workpiece before and after the implementation of fixing by Where there is a change in size after repair.
1. Appears as a red bar on the grounds that such a change is measured value before proceeding with the repair.
2. Appears as a blue bar on the grounds that such a change is measured value before proceeding with the repair of lower
Advantages and disadvantages of using CMM. The ability of the machinery that was presented in the order it is only a preliminary part of the machine only. If the ability of machines to be applied in conjunction with personnel with expertise in the program to create a CAD / CAM and machining CNC Turning Center will enhance the plant has the ability to develop and expand operations. do Reverse Engineering (Reverse Engineering) is working properly and have the greatest potential. They may have the disadvantage is the cost of using the CMM is relatively high. Available website:. www.thaicmm.com. www.messer-cs.de. www.knowhow.co.th. www.workshop.egat.co.th. www.vcharkarn.com. www.flowcorp.com. www.cmmmachine.com. www.faro.com. http://tobproduce.sitesled.com/page112.html. http://www.massbuss.com/mass-press.htm.
http://www.kmitl.ac.th/engineer/Eng--Mechanic.pdf. www.sut.ac.th / cste / thai / Direction / DirectionE.pdf. http://www.factorymax.co.th/metal/download/9.pdf?PHPSESSID=22b593ab06b3c. http://www.factorymax.co.th/metal/download/16.pdf?PHPSESSID=22b593ab06b3c. http://mec.ssktc.ac.th/cnc/i1.pdf. www.mec.ssktc.ac.th. www.ipst.ac.th.
