The following figure is the outline drawing of M1432A universal cylindrical grinder. The meaning of the M1432A number is: M—grinding machine class; 1—external cylindrical grinding machine group; 4—general code of universal cylindrical grinding machine; 32—1 / 10 of the maximum grinding diameter, the maximum grinding diameter of the machine is 320mm; A major improvement in performance and structure.
1—Lathe Bed 2—Head stand 3—Working table 4—Internal grinding tool 5—grinding wheel frame 6—slide saddle 7—tailstock 8—foot pedal 9—transverse feed handwheel
1. The main parts of the grinding machine
-The lathe bed 1 is the basic support of the grinder. It is equipped with a grinding wheel frame 5, a working table 3, a head frame 2, a tailstock 7, and a transverse saddle, etc., so that these components maintain accurate relative positions during work. The inside of the bed is used as an oil sump for hydraulic oil.-The head frame 2 is used to mount and clamp the workpiece, and drive the workpiece to rotate. The head frame can be rotated 90 ° counterclockwise in the horizontal plane.-The internal grinding tool 4 is used to support the spindle of the grinding wheel for grinding the internal hole. The internal grinding tool spindle is driven by a separate motor.-The grinding wheel frame 5 is used to support and drive a high-speed rotating grinding wheel spindle. The grinding wheel frame is installed on the saddle 6. When the short conical surface needs to be ground, the grinding wheel frame can be adjusted to a certain angular position (± 30 °) in the horizontal plane.
-Tailstock The tailstock 7 and the top of the headstock 2 support the workpiece together.-The saddle and the lateral feeding mechanism rotate the lateral feeding handwheel 9 so that the lateral feeding mechanism can drive the sliding saddle 6 and the grinding wheel frame thereon to perform lateral feeding movement.-Workbench Workbench 3 consists of two floors. The upper worktable can be rotated around the horizontal plane of the lower worktable by an angle (± 10 °) to grind a long conical surface with a small taper. The upper workbench is provided with a head frame 2 and a tailstock 7 on the top, and they can move longitudinally back and forth along the bed rail along with the workbench.
2.Purpose of machine toolThe following is an example: The M1432A machine tool is a general-precision universal cylindrical grinder with economic accuracy of IT6 to IT7, and the surface roughness value Ra of the machined surface can be controlled in the range of 1.25 to 0.08 μm. Universal grinding machines can be used for the finishing of inner and outer cylindrical surfaces and inner and outer conical surfaces. Although the productivity is low, it is widely used in single-piece small batch production workshops, tool workshops and machine repair workshops due to its good versatility.
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The silicon carbide substrate preparation process mainly includes raw material synthesis, silicon carbide crystal growth, ingot processing, ingot cutting, cutting piece grinding, grinding piece polishing, polishing piece cleaning, etc.Among them, the key and difficult points of preparation are mainly the crystal growth, cutting, grinding and polishing links, which are the key points and difficulties in the entire substrate production process, and become the bottleneck that limits the yield rate and production capacity of silicon carbide.
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