49results about How to "Precise processing" patented technology

The utility model discloses a draw -bench technical field's draw -knife support platform on draw -bench, including base, bracket and cooling pool, and the bracket is supported on the base through the lifting rod, and through the adjustment of lifting rod, can carry out height adjustment to bracket, also can adjust height respectively to the left and right ends of bracket, reaches the purpose of adjusting the angle of bracket and holds up, thereby stably erects draw -knife on the base, and can adjust draw -knife to the same horizontal position with the work piece of draw -bench, is convenient for cutting operation, still has increased the barrier net and the liquid baffle, still has increased the nozzle simultaneously, thereby can spray the coolant on draw -knife, effectively remove the metal dreg on its surface, reduce the probability of dreg residue, facilitate personnel's cleaning to draw -knife after each processing, still increased the cooling pool and the net frame and give the nozzle cooling liquid, make the whole device reach the coolant circulation utilization, and can collect the metal dreg of cutting through the net frame, convenient operation, convenient to use.

The utility model discloses a kind of laminating machines with stack quantity detection, belong to laminating equipment technical field, its technical scheme main points include laminating machine main body, the front side of laminating machine main body is fixedly connected with conveying assembly, and the top of conveying assembly is provided with detection assembly, the conveying assembly includes U-shaped block, the both sides of U-shaped block top are all fixedly connected with L-shaped plate, and the inside of U-shaped block is fixedly connected with conveying belt, the opposite side of two L-shaped plates is all provided with clamping plate, solve the effect of existing laminating machine limitation is not good, in actual use process, lack of limiting structure, it is difficult to limit the movement of material, when assembly line operation, material is prone to positional deviation due to conveying belt vibration, incoming material deviation and other factors, it is difficult to accurately enter laminating machine's compression area, leading to alignment when laminating is not accurate, seriously affect the processing effect of laminating machine and the quality of product, reduce the practicality of the device.

The utility model discloses a kind of middle disc rotation driving mechanism of hardware machining machine, it includes gear ring, fixed on middle disc;Driving device, including fixed on upper support frame servo motor, linkage in the shaft rod assembly of servo motor, and gear installed on shaft rod assembly, gear meshing installation is on gear ring;Middle disc has relative upper disc stop state to be processed, in the state to be processed, each chuck seat is respectively corresponding set below each processing tool bit, the utility model uses the cooperation of servo motor+shaft+gear ring, completes the rotation driving of middle disc, drive is very stable, driving precision is high, and the stop and start of middle disc can be accurately controlled by servo motor, the high-speed operation of equipment can be satisfied, structure is stable, service life is long, and practicality is strong.

The utility model discloses a clamping device for packing box processing, and relates to the technical field of clamping devices, the clamping device for packing box processing comprises a collecting box, the surface of the collecting box is fixedly connected with a filter screen, the surface of the collecting box is fixedly connected with a portal frame, and the surface of the portal frame is fixedly provided with a motor; a guide groove is formed in the surface of the portal frame, an output shaft of the motor is fixedly connected with a two-way threaded rod, the two-way threaded rod is rotationally connected with the inner wall of the guide groove, the surface of the two-way threaded rod is in threaded connection with a guide block, the guide block is slidably connected with the inner wall of the guide groove, and the surface of the guide block is fixedly connected with a guide block. The surface of the fixing plate is fixedly connected with a clamping plate, cleaning cotton slides downwards to clean the surface of the packaging box, then when the packaging box is used subsequently, the surface of the packaging box is cleaner and tidier, and then foreign matter and dust are prevented from being attached to the surface of the packaging box.

The application discloses a three-axis numerical control machining center for metal machining, which comprises a frame body, a workbench and a work main body arranged in the frame body, a lifting plate arranged in the frame body, a protective cover fixedly connected to the frame body, a central shaft connected to the protective cover, and a driven cylinder fixedly connected to the side surface of the central shaft. The three-axis numerical control machining center is characterized in that the workbench, the work main body, the lifting plate, the protective cover, the central shaft, the driven cylinder, connecting ropes, a large gear, a side shaft, a small gear and fan blades are cooperated with each other. In the process of use, the force generated in the lifting process of the lifting plate is utilized to rotate the fan blades, the debris generated in the machining is blown away by the fan blades, the debris is prevented from being accumulated, the debris is also prevented from being accumulated on other components, the device can be stably moved, the added structure is low in cost, the cost is not increased too much, the work burden of workers is reduced, and the device is convenient to use.

This utility model discloses a self-centering fixture for a CNC grinding machine, relating to the field of CNC grinding machine technology. The utility model includes a base plate, on which a supporting disc is fixedly connected. The top surface of the supporting disc has several grooves, and sliders are slidably connected to the inner walls of each groove. A fixture is fixedly connected to the top surface of each slider. An air pump is fixedly connected to the top surface of the base plate, and a threaded rod is fixedly connected to the top surface of the air pump. A hinge block is slidably connected to the outer wall of the threaded rod, and an internal thread block is threaded onto the outer wall of the threaded rod. The internal thread block is rotatably connected to the bottom surface of the hinge block. Several hinge rods are hinged to the outer wall of the hinge block, and one end of each hinge rod away from the hinge block is hinged to one of the sliders. This utility model, by providing a positioning mechanism, enables multiple fixtures to clamp and position a workpiece placed on the top surface of the supporting disc from multiple directions.

The application discloses a kind of laser processing devices of mould surface texture, including base, laser cutting machine main body, material guiding structure, blanking structure and solid material structure;The laser cutting machine main body is fixedly arranged on the right end upper wall of base, the material guiding structure is fixedly arranged in the middle of base front end, the blanking structure is fixedly arranged on the left end of material guiding structure, the solid material structure is fixedly arranged on the right end front side of base, and solid material structure respectively with laser cutting machine main body and material guiding structure right end correspond, the present application relates to mould processing equipment technical field, the present application has the beneficial effect that: automatic blanking and guiding, improve processing efficiency, reduce manual operation, multi-angle overturn processing, optimize inner wall texture precision, solve the problem that traditional device inner wall is processed difficult, self-adapting adjustment design, enhance mould compatibility, fit different thickness and diameter mould blanking demand, improve equipment versatility.

The utility model discloses a kind of concave composite chamfering cutter, belong to machining tool design technical field, the composite chamfering cutter includes two center symmetrical cutter teeth, cutter tooth is composed of back rake face, oblique front and cylindrical arc surface, wherein: the included angle range of back rake face and vertical face is 35 ° to 50 °, the included angle range of oblique front and vertical face is 8 ° to 15 °, cylindrical arc surface is the extension of cylindrical cutter body, the top end of cutter tooth is also provided with tooth end face, the included angle range of tooth end face and horizontal plane is 3 ° to 8 °. Compared with prior art, the composite chamfering cutter carries out mirror image processing to the two blades of tool, and designs specific cutter tooth angle, and the oblique front of specific angle can effectively increase the strength of tool, facilitate chip removal, and the back rake face of specific degree can reduce the wear of cutting edge while reducing vibration;The stability and service life of tool are improved, and the overall tool can effectively reduce the vibration interference in the machining process during the machining process, to ensure the stability and consistency of machining quality.

This utility model proposes a dual-axis pipe cutting machine, including a feeding section and a processing section fixed on the frame. The feeding section includes a rectangular storage bin, a material conveying device, a material conveying chute, a pushing chute, and a pushing device. The material conveying device has a material chain plate with a bending angle of not less than 90°. The outlet of the pushing chute is aligned with the inner cutting shaft of the roll changing and cutting unit in the processing section. The roll changing and cutting unit has a roll changing disc and a power unit that drives the roll changing disc to rotate on both sides of the left side plate of the frame. The roll changing disc has an inner cutting shaft and an outer cutting shaft mounted on two fixed seats. The outer cutting shaft is equipped with a synchronous positioning mechanism on the right side plate of the frame. A cutting mechanism is installed below the outer cutting shaft, and an automatic loading and unloading mechanism is installed below the inner cutting shaft. This utility model improves the fit between the equipment and the material, thereby increasing production efficiency.

The invention discloses a vertical numerical control grinding machine for machining flat tongs and a coping auxiliary technology, and belongs to the technical field of vertical numerical control grinding machines. The vertical numerical control grinding machine for machining flat tongs comprises a grinding machine body and further comprises a containing table, a positioning barrel, a positioning rod, a reciprocating moving assembly and a double-face clamping assembly; the placing table is fixedly installed on the machining face of the grinding machine body, the positioning cylinder is installed on the machining face in a sliding mode through the translation base, the limiting assembly is installed on the positioning cylinder, the reciprocating moving assembly is arranged on the placing table, and the double-face clamping assembly is arranged on the placing table. According to the vertical numerical control grinding machine for machining the flat tongs, through the containing table, the positioning barrel, the positioning rod, the reciprocating motion assembly and the double-face clamping assembly, the closed end face cannot be pressed when the flat tongs are located and placed, and position deviation caused by repeated disassembly and assembly is not needed.

This invention relates to an E-bolt alignment and clamping fixture, comprising a base plate, a support assembly, an alignment assembly, and a clamping assembly. All three assemblies are mounted on the base plate. There are two sets of support assemblies, located on either side of the alignment assembly. There are also two sets of clamping assemblies, located on either side of the two support assemblies. The two sets of support assemblies support and lift the E-bolt. The alignment assembly vertically clamps the middle column of the E-bolt, thus aligning the E-bolt. The two sets of clamping assemblies clamp both ends of the E-bolt, ensuring that the E-bolt placed in the fixture is first aligned and then clamped for accurate machining of the three cylinders.

This utility model relates to the field of aircraft parts processing technology, specifically to an aircraft parts processing positioning device, comprising: a worktable, a groove formed on the upper outer wall of the worktable, a slider slidably connected to one side of the inner wall of the groove, a connecting groove formed on both outer walls of the slider, a toothed block fixedly connected to the lower outer wall of the slider, a gear movably connected to the lower end of the slider, a connecting member movably connected to one side of the outer wall of the gear, a connecting block movably connected to the outer wall of the connecting member away from the gear, a second cylinder connected to the lower end of the connecting block, and a limit rod movably connected to one side of the inner wall of the gear. This utility model solves the problems of existing aircraft parts processing positioning devices having simple structure, single positioning method, lack of flexible adjustment mechanism, inability to adapt to different shapes and specifications of aircraft parts, and poor versatility.

The application relates to a compression-resistant damping type composite aluminum plate processing technology and tooling, and relates to the technical field of composite aluminum plates. The application comprises a welding base, a welding base is arranged below the welding base, two support frames for supporting the welding base are arranged on the welding base, a rotating mechanism and a lifting mechanism for rotating and lifting the welding base are arranged on the support frames, a tooling plate for placing an aluminum plate frame is arranged on the welding base, two mounting plates are arranged on the tooling plate, the two mounting plates are respectively connected to the two sides in the length direction of the tooling plate, a tooling rod is arranged between the two mounting plates, a plurality of fixing assemblies for fixing the aluminum plate frame are arranged on the tooling rod, the fixing assembly comprises a fixing rod, a support and a plurality of fixing pieces, the fixing rod is arranged perpendicularly to the tooling rod, one end of the fixing rod is connected to the tooling rod, the other end of the fixing rod is connected to the support, and the support is connected to the tooling plate. The application has the effects of guaranteeing the welding quality of a product in the later period and improving production efficiency.

The application belongs to the technical field of elliptical bearing processing, and particularly relates to a middle split surface drilling device for a steam turbine elliptical bearing. The middle split surface is provided with a drilling device. The drilling device comprises a support plate and a split component. The support plate is provided with a plurality of connecting holes. The connecting holes are aligned with the holes in the middle split surface. An empty slot is arranged at the position of an aligned hole I on the support plate. A connecting plate is arranged above the empty slot. The split component comprises a split frame and a driving structure. The split frame is provided with connecting ports opposite to the positions of the empty slots on both sides. An inclined table is arranged in the split frame. The inclined surface of the inclined table is opposite to the connecting ports. A plurality of gaskets are arranged on the inclined table. The driving structure comprises a support column and a rotating wheel rotatably connected below the support column. The support column penetrates through the split frame and is slidably connected with the split frame. The support column drives the rotating wheel to approach the gaskets. The gaskets are caused to slide out of the connecting port positions to the empty slots by friction. A drill bit extends into the connecting hole to drill the holes in the middle split surface.

This invention relates to the field of automotive parts manufacturing technology, and in particular to an oil pan processing production line, including a marking assembly and a processing assembly. The marking assembly is used to mark the oil pan, and the processing assembly includes a processing table with a limiting mold and a processing cutter. The processing cutter can move horizontally and vertically. The limiting mold includes a limiting seat with multiple support rods. The support rods are shaped to fit against the oil pan. The limiting seat also has multiple detection posts, which are shaped to fit against the oil pan. Each detection post has a detection air passage, which is completely blocked by the oil pan. An airtightness detection element is installed within the detection air passage to measure the airtightness between the detection air passage and the oil pan. This airtightness detection method can determine whether the oil pan is accurately placed, thereby improving the accuracy of oil pan processing.

This utility model discloses a blank support plate device for a spinning machine, relating to the field of metal processing auxiliary technology. The bottom plate of this utility model has several sleeves fixedly connected to its top outer wall. A sliding rod is slidably connected to the inner wall of each sleeve. An adjustment mechanism is provided on the top outer wall of each sliding rod. The adjustment mechanism includes a support plate, and a controller is fixedly connected to the outer wall of the support plate. This utility model utilizes a bidirectional threaded rod and a connecting plate. When the bidirectional threaded rod rotates, it causes two threaded blocks to move closer together. Then, when the threaded blocks move, they cause the joint shaft to move. When the joint shaft moves, it causes the connecting plate to move in an arc. Then, when the connecting plate moves, it causes the second joint shaft to move. When the second joint shaft moves, it causes the support plate to rise. This improves the flexibility of the equipment, allowing the position of the support plate to be adjusted according to the height of the blank, ensuring stable support of the blank and preventing the blank from sagging due to the support plate being too low.

This utility model relates to the field of milling equipment and discloses a manual milling device, including a support base for mounting the milling device and a fixed base disposed on the support base for placing the milling workpiece. It also includes: a moving unit, adjustablely disposed on the support base, for adjusting the mounting position of the milling unit; a positioning unit, disposed on the moving unit, for positioning the machining position of the milling unit; and an adjusting component, disposed on the moving unit and connected to the positioning unit, for adjusting the mounting position of the positioning unit. This utility model ensures that the milling unit accurately reaches the predetermined machining position each time, controlling machining errors within a minimal range, thereby significantly improving the machining accuracy of the workpiece and meeting the manufacturing requirements of parts.

The utility model relates to the field of valve machining equipment, in particular to a drilling machine for machining a leakage-proof stop valve, which comprises a base, a stepping device is mounted at one end above the base, drilling equipment is mounted on the stepping device, a lifting seat is mounted at the other end above the base, and a mounting frame is mounted above the lifting seat. By designing the rotating disc and the annular frame, the valve body can be driven to rotate through the rotating disc, so that an inlet and an outlet of the valve body can be machined after one-time installation, repeated disassembly and assembly are not needed, a plurality of bolt holes can sequentially rotate to pass through one side of drilling equipment through the annular frame, the moving steps of the drilling equipment or the valve body are reduced, and the machining efficiency is improved. The pushing blocks are designed to push the inclined blocks on the two sides to move at the same time, so that the clamping discs move towards the center at the same time, the valve body is clamped in the center, it is guaranteed that when the valve body rotates and is machined, the central axis does not deviate, and machining is accurate.

The utility model relates to air cylinder head cam hole processing technical field especially relates to a kind of machine tool of processing air cylinder head cam hole, including machine tool support platform;Still including a support frame and moving platform, air cylinder head is fixed on machine tool support platform, two processing cutters that are left and right relative are provided in machine tool support platform top, moving platform is installed in processing cutter top, one support frame is movably connected between two moving platforms, two threaded rods of thread structure opposite are rotatably connected in the left and right sides of one support frame, the left and right sides of one support frame are fixedly connected with limit post, and screw hole matched with threaded rod is set in moving platform;The utility model is by being provided with opposite moving platform and the processing cutter of being installed in the moving platform below, limit post can be guided, while rotating two threaded rods of thread structure opposite, to realize the synchronous movement of two processing cutters in opposite direction, carry out synchronous processing, improve the processing efficiency of air cylinder head cam hole.

The utility model provides a kind of CNC mechanical processing fixture for new energy automobile battery tray crossbeam, and battery tray crossbeam includes left casting, intermediate section bar and right casting, this CNC mechanical processing fixture includes bridge plate mechanism, left positioning mechanism for the positioning of left casting, right positioning mechanism for the positioning of right casting, left clamping mechanism for clamping and fixing left casting, right clamping mechanism for clamping and fixing right casting;Left positioning mechanism, right positioning mechanism, left clamping mechanism and right clamping mechanism are all fixed on bridge plate mechanism.The utility model solves the technical problem of how to overcome the existing new energy automobile battery tray crossbeam casting machining allowance in prior art, cannot meet its dimensional accuracy requirement, difficult to position and control deformation.

The utility model relates to the technical field of double spindles, and discloses a double-spindle box body structure which comprises a spindle box, a fixing piece, a driving assembly and a machining assembly, and the interior of the spindle box is in sliding fit with a guide block of the fixing piece through a guide groove to provide accurate installation. A main shaft hole and an auxiliary shaft hole are used for installing a first main shaft, a second main shaft, a movable groove of a driven shaft fixing piece and a main shaft auxiliary ring to form a rotating pair, stable rotation of the main shafts is guaranteed, in the driving assembly, a servo motor achieves constant-speed reverse rotation of the first main shaft and the second main shaft through a motor synchronous belt, a synchronous gear and a gear synchronous belt, and the machining stability is improved. Power is transmitted to the driven shaft through meshing of the transmission gear and the driven gear, a fixed machining part of the machining assembly is precisely in butt joint with positioning grooves in the front ends of the main shaft and the driven shaft through a fixing ring, when a machining cutter is installed in a fixing end, cutting can be conducted, symmetrical layout is adopted, a plurality of parts can be machined at the same time, the machining period is shortened, and the structure is convenient to maintain.

This application discloses a fine woodworking band saw, relating to the field of material processing technology. The fine woodworking band saw includes a placement table with a cutting groove; a body seat is located below the placement table, and a body head is located on the body seat. A band saw is positioned between the body head and the body seat, and the band saw is located within the cutting groove; a positioning plate is located on the top of the placement table, extending along the length of the placement table; a guide rail is provided on the placement table, and the cutting groove is located between the positioning plate and the guide rail; a sliding seat is slidably mounted on the guide rail, and a pusher plate is mounted on the sliding seat. By setting the guide rail and pusher plate, when cutting the workpiece, the pusher plate is pushed to slide linearly along the guide rail. The movement direction of the pusher plate is precisely constrained by the guide rail, keeping the workpiece feed in a straight line, reducing the probability of straightness deviation caused by manual operation, and effectively improving the problems of insufficient processing straightness accuracy and poor quality stability.

The utility model relates to the technical field of mechanical manufacturing, and discloses a precise edge grinding burr multi-dimensional positioning and removing device which comprises a base, a plurality of stand columns are fixedly connected to the top of the base, a top plate is fixedly connected to the tops of the stand columns, a positioning mechanism is fixedly connected to the top of the base, and the positioning mechanism is fixedly connected to the top of the base. A rotating mechanism is mounted at the bottom of the top plate, an angle adjusting mechanism is mounted at the bottom of the rotating mechanism, a clamping mechanism is mounted at the top of the positioning mechanism, the positioning mechanism comprises an electric push rod, a sliding block is fixedly connected to the driving end of the electric push rod, and vertical rods are slidably connected to the inner walls of the left side and the right side of the sliding block; the front side and the rear side of the sliding block are fixedly connected with transverse rods. According to the three-point centring clamp, the three-point centring clamp is suitable for the sizes of different parts, then the clamp is driven by the moving assembly to move and position, and therefore the clamp drives the parts to achieve more accurate machining.

The utility model discloses a kind of processing devices for alloy elbow, a kind of processing devices for alloy elbow, including workbench, bending roller is rotatably connected on the workbench, long connecting plate is fixedly connected on the bending roller, one end of the long connecting plate is fixedly connected with push rod, cylinder is installed on the long connecting plate, the movable end of the cylinder is fixedly connected with pressure part, limit part is fixedly connected on the workbench, feed mechanism is provided on the workbench;The feed mechanism includes motor sliding rail, sliding block is slidably connected on the motor sliding rail, the sliding block is provided with two, relate to metal pipe processing technical field, the rotation of gear ring and disc is controlled by motor driving gear rotation, adjust the bending direction of processing pipe fitting by cooperation clamping assembly, the bending angle of processing pipe fitting is controlled by push rod and long connecting plate, so that the adaptation of device is higher, processing is more accurate.

The application discloses a double cantilever machine tool integrating laser cutting and milling processing, which comprises a machine tool body (1), two groups of three-dimensional movement assemblies are arranged on the machine tool body (1), a laser cutting head (41) is arranged on a Z-axis movement assembly (3) of one group of three-dimensional movement assemblies, and a milling cutter (56) is arranged on a Z-axis movement assembly (3) of the other group of three-dimensional movement assemblies; or a composite processing assembly (6) comprising a laser cutting head assembly (4) and a milling cutter assembly (5) is arranged on the Z-axis movement assembly (3) of any one group of three-dimensional movement assemblies, the laser cutting head assembly (4) and the milling cutter assembly (5) are both mounted on a composite machine base (61), and the composite machine base (61) is mounted on the Z-axis movement assembly (3); at this time, the milling cutter (56) in the milling cutter assembly (5) can move vertically up and down relative to the composite machine base (61). The double cantilever machine tool can realize rapid, efficient and accurate processing of workpieces.

The utility model relates to a kind of pull rod conveying mechanism, including guide bearing set, support plate assembly, pull pencil assembly and length measurement component.Length measurement component is located in the front end of pull pencil assembly, and the length of pull rod is measured by first pressing upper wheel and measuring lower wheel;Pull pencil assembly realizes accurate pressing and conveying to pull rod by second pressing upper wheel and conveying lower wheel, and its power is provided by motor through gear transmission structure, to ensure the orderly synchronous rotation of second pressing upper wheel and conveying lower wheel, and the utility model realizes liftable activity under the action of expansion spring, automatically adjusts pressing force to adapt to pull rod of different diameters, and through the cooperative work of each component, the efficient, stable conveying and accurate processing of pull rod are realized, with significant practical value and broad application prospect.

The utility model discloses tire forming production equipment which comprises a concave machining table, a machining support and an extrusion forming structure, the machining support is installed on the concave machining table, and the extrusion forming structure is installed on the concave machining table and the machining support. Through cooperation of a rotary driving machine and a machining horizontal hydraulic push rod, stable rotation and horizontal stretching and retracting of a machining convex shaft in a machining limiting shaft pipe are achieved, and tire raw materials can be efficiently subjected to rotary drainage and machining; and secondly, a bidirectional driving machine drives a bidirectional gear set, a bidirectional threaded rod set and a bidirectional threaded pipe set to operate, a pair of relatively telescopic circular rings is driven to relatively stretch out and draw back, the plastic layer can be accurately extruded into a circular ring shape in cooperation with tight extrusion of a vertical extrusion hydraulic push rod and a semicircular extrusion block, and extrusion forming of the plastic tire is achieved.

This invention discloses an automated dispensing device and method for small packages of traditional Chinese medicine (TCM). The automated dispensing device includes a base, a container, a feeding device, a processing device, a box-dispensing device, a medicine-dispensing device, and a transfer device. The base defines a transfer area and a circulation area. The circulation area includes a feeding station, a box-dispensing station, and multiple processing stations. The feeding device transfers an external medicine storage container to the feeding station. The processing device pulls and cuts the material strip in the medicine storage container to obtain medicine packets. The box-dispensing device moves the empty container at the box-dispensing station outward. The medicine-dispensing device moves the medicine packets at the processing stations outward. The transfer device moves the medicine storage container between the feeding station and each processing station, and moves the empty container between each processing station and the box-dispensing station. This invention helps to make the entire processing of small packages of TCM more orderly, efficient, accurate, and productive.

The application discloses a machining tool for an aircraft landing gear wheel axle mounting seat, and is specially designed for the U-shaped structure of the aircraft landing gear wheel axle mounting seat and the specific layout of the axle holes in the two side walls of the U-shaped structure, a machining tool specially matched with the U-shaped structure and the specific layout of the axle holes in the two side walls is designed, and through the cooperation of a tool bar, a tool disc, an adjusting device and a shoulder guide sleeve, the precise machining of the bushing end face of the specific component is realized, and the technical blank of the special tool in the field is filled up. The manual driving mode is adopted instead of the machine tool power driving, the operator can adjust the feeding speed and the cutting force in real time and steplessly according to the machining state, and the vibration caused by the periodic cutting force fluctuation is avoided. Meanwhile, the guide section with the shoulder guide sleeve is inserted into the axle hole of the mounting seat, rigid support of the tool bar adjacent to the cutting point is provided, and the cutting force arm is shortened. The above-mentioned double effects basically eliminate the phenomena of tool vibration and tool biting in the machining process.