A cylindrical grinding machine for rubber manufacturing

Abstract

The present invention provides a rubber manufacturing cylindrical grinder, which relates to the technical field of grinding processing, including a machine tool, a grinding mechanism, a closing component and a positioning clamping component. A base is installed at the bottom of the machine tool, and a top plate is installed at the top of the machine tool. A grinding channel is opened in the middle of the top plate, and a slide groove is opened on the inner side of the grinding channel. Closing components are installed at both ends of the top plate, and the grinding mechanism is installed on the top of the grinding channel, and each closing component is connected to the grinding mechanism part. The cylindrical grinder adopts a semicircular grinding cavity, and the grinding cavity is sealed by the closing component in conjunction with the driving mechanism and the positioning clamping component at both ends, so that the debris and dust in the grinding process can be prevented from being scattered to the outside, reducing pollution and reducing noise. At the same time, the bottom arc structure of the grinding cavity can also provide support for the rubber blank when it is installed, which plays an auxiliary positioning effect and avoids the offset problems such as bending and tilting after clamping.

Description

Technical Field

[0001] The invention relates to the technical field of grinding processing, in particular to a cylindrical grinding machine for rubber manufacturing. Background Art

[0002] Cylindrical grinder is a kind of mechanical processing equipment used to grind the outer circle of the workpiece. It is usually used to process shaft parts. Cylindrical grinder can remove irregular parts of the workpiece surface through grinding process. In the production and processing of cylindrical rubber products, cylindrical grinder is often used for grinding.

[0003] In the prior art, the external cylindrical grinder used in rubber manufacturing needs to first clamp the two ends of the cylindrical blank of the rubber product through a clamp, and then control the movement of the grinding wheel to contact the edge of the rubber blank to achieve the grinding effect. However, in this process, due to the certain elasticity of the rubber product itself, after one end of the rubber blank is clamped, the other end will sink, which will cause the point where the other end is clamped to be offset from the center point of the end of the rubber blank. On the other hand, the clamping process always requires manual assisted calibration operations, resulting in cumbersome clamping steps and high difficulty. On the other hand, the outer ring grinding process of the rubber blank will generate a large amount of debris and dust, which is difficult to clean and easy to float into the air. The generated dust and noise will affect the surrounding staff. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a rubber manufacturing cylindrical grinder to solve the problems raised in the above-mentioned background technology. The present invention adopts a semicircular grinding cavity, and seals the grinding cavity through a top closing component in conjunction with a driving mechanism and a positioning clamping component at both ends, thereby preventing debris and dust from being dispersed to the outside during the grinding process, reducing pollution and alleviating noise. At the same time, the bottom arc structure of the grinding cavity can also provide support for the rubber blank during installation, thereby assisting positioning and avoiding bending, tilting and other offset problems after clamping.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a rubber manufacturing cylindrical grinder, including a grinder body, the grinder body including a machine tool, a grinding mechanism, a closing component and a positioning clamping component, a base is installed at the bottom of the machine tool, a top plate is installed on the top of the machine tool, a grinding channel is opened in the middle of the top plate, a slide groove is opened on the inner side of the grinding channel, closing components are installed at both ends of the top plate, the grinding mechanism is installed on the top of the grinding channel, and each closing component is connected to the grinding mechanism part, a grinding cavity is arranged inside the machine tool, and the grinding cavity is semicircular in structure as a whole, the closing component and the positioning clamping component are respectively installed at the two ends of the machine tool, and the bottoms of the closing component and the positioning clamping component are installed on the base, and the grinding mechanism as a whole moves horizontally along the grinding channel.

[0006] Furthermore, a dust collection box is installed at the bottom of the machine tool, a blower is installed on one side of the machine tool, lifting grooves and placement grooves are respectively opened at both ends of the grinding cavity, and air inlet holes and exhaust holes are also opened on the inner wall of the grinding cavity.

[0007] Furthermore, the blower is installed on the outside of the air inlet, and the blower blows the external airflow from the air inlet into the inside of the grinding cavity, the driving mechanism is installed and covered on the outside of the lifting groove, the positioning clamping assembly is installed and covered on the outside of the placement groove, a door panel is installed on the side of the machine tool, and the outside of the exhaust hole is connected to the dust collection box part at the bottom through a pipe.

[0008] Furthermore, the grinding mechanism includes a shell and a grinding wheel, a first motor is installed on one side of the shell, the grinding wheel is fixedly installed on the bottom of the shell, a first side plate and a second side plate are respectively installed on both sides of the shell, and a slider is arranged at the bottom end of the shell.

[0009] Furthermore, the output end of the first motor drives the inner grinding wheel through a gear structure, the two ends of the slider are embedded in the interior of the slide groove, the bottom of the grinding wheel passes through the grinding channel and is embedded in the grinding cavity, a threaded sleeve is installed at the end of the second side plate, a screw rod is inserted in the middle of the threaded sleeve, and a second motor is installed at one end of the screw rod.

[0010] Furthermore, the closing assembly includes a reel and a rubber film, reel boxes are provided at both ends of the surface of the top plate, the reel is installed inside the reel boxes, the rubber film is wound on the surface of the reel, and a gear is installed at one end of the reel.

[0011] Furthermore, a toothed belt is sleeved on the surface of the gear, and both ends of the toothed belt are fixedly connected to both sides of the first side plate, one end of each rubber membrane is bonded to both sides of the outer shell as a whole, and the edge of the rubber membrane is embedded in the interior of the slide groove, and both ends of the reel are embedded in the inner wall end of the reel box through bearings.

[0012] Furthermore, the driving mechanism includes a third motor and a closed baffle, the third motor is fixedly mounted on the outer side of the closed baffle, a chuck fixture is mounted on the output shaft of the third motor, and the surface of the closed baffle fits with the surface of the machine tool around the lifting slot.

[0013] Furthermore, the positioning clamping assembly includes a threaded column, a rear baffle and a front baffle, the bottoms of the rear baffle and the front baffle are connected with a support plate, the surface of the rear baffle is interspersed with a threaded column, the middle of the front baffle is interspersed with a positioning cone handle, and the end of the threaded column is fixed to the positioning cone handle as a whole.

[0014] Furthermore, electric lifting rods are installed at the bottom of the support plate and the bottom of the third motor, and the bottom end of each electric lifting rod is fixedly connected to the surface of the base, the surface of the front baffle is in contact with the surface of the machine tool around the placement groove, each of the electric lifting rods maintains synchronous lifting, and the central axis of the positioning cone handle coincides with the central axis of the chuck fixture.

[0015] Beneficial effects of the present invention:

[0016] 1. The rubber manufacturing cylindrical grinder adopts a semicircular grinding cavity, and the grinding cavity is sealed by the top closing component in conjunction with the driving mechanism and positioning clamping components at both ends, which can prevent the debris and dust from drifting to the outside during the grinding process, and the entire grinding process is always completed inside the grinding cavity, which reduces pollution while effectively reducing noise.

[0017] 2. The rubber manufacturing cylindrical grinder can also provide support for the rubber blank when installing it through the arc structure at the bottom of the grinding cavity. Therefore, when placing the rubber blank, it can be directly placed inside the grinding cavity, and the arc surface at the bottom can assist in positioning the bottom edge of the rubber blank, and ensure that the rubber blank is completely parallel to the bottom straight line of the grinding cavity, avoiding bending, tilting and other offset problems after clamping.

[0018] 3. Since the rubber manufacturing cylindrical grinder can achieve the effect of automatic positioning and correction of the rubber blank by grinding the bottom of the cavity, when the rubber blank is subsequently clamped, it is only necessary to align the positioning clamping assembly with the center point of one end of the rubber blank and press it against the rubber blank, and the rubber blank can be automatically pushed toward the other end until it is docked and assembled with the driving mechanism. The entire clamping process is simple and convenient, and there is no need to calibrate and test the horizontality of the rubber blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the appearance of a cylindrical grinding machine for rubber manufacturing according to the present invention;

[0020] Figure 2 The figure is a disassembled view of the machine tool part of the present invention;

[0021] Figure 3 It is a schematic diagram of the connection between the grinding mechanism and the sealing component of the present invention;

[0022] Figure 4 It is a schematic diagram of the grinding mechanism part of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the positioning and clamping component part of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the driving mechanism part of the present invention; In the figure: 1. machine tool; 2. blower; 3. grinding mechanism; 4. closing component; 5. driving mechanism; 6. positioning clamping component; 7. base; 8. grinding cavity; 9. lifting slot; 10. placement slot; 11. air inlet; 12. exhaust hole; 13. dust collection box; 14. top plate; 15. grinding channel; 16. slide slot; 17. reel box; 18. reel; 19. gear; 20. toothed belt; 21. rubber membrane; 22. housing; 23. first motor; 24. first side plate; 25. second side plate; 26. threaded sleeve; 27. grinding wheel; 28. second motor; 29. ​​screw; 30. slider; 31. electric lifting rod; 32. support plate; 33. rear baffle; 34. threaded column; 35. front baffle; 36. positioning cone handle; 37. third motor; 38. closing baffle; 39. chuck fixture. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0026] See also Figures 1 to 6The present invention provides the following technical solutions: a rubber manufacturing cylindrical grinder, comprising a grinder body, the grinder body comprising a machine tool 1, a grinding mechanism 3, a closing component 4 and a positioning clamping component 6, a base 7 is installed at the bottom of the machine tool 1, a top plate 14 is installed at the top of the machine tool 1, a grinding channel 15 is opened in the middle of the top plate 14, a slide groove 16 is opened on the inner side of the grinding channel 15, closing components 4 are installed at both ends of the top plate 14, the grinding mechanism 3 is installed on the top of the grinding channel 15, and each closing component 4 is connected to a part of the grinding mechanism 3, a grinding cavity 8 is arranged inside the machine tool 1, and the grinding cavity 8 is a semicircular structure as a whole, the closing component 4 and the positioning clamping component 6 are respectively installed at the two ends of the machine tool 1, and the bottoms of the closing component 4 and the positioning clamping component 6 are installed on the base 7, and the grinding mechanism 3 moves horizontally along the grinding channel 15 as a whole. The rubber manufacturing cylindrical grinder is used for grinding the outer circle of a cylindrical rubber product blank. When in use, the positioning and clamping assembly 6 is first controlled to move upward, and then the rubber blank is directly placed from the placement groove 10 at one end of the machine tool 1 into the grinding cavity 8 in the machine tool 1, and then the positioning and clamping assembly 6 is controlled to move downward and the abutment effect on the rubber blank is achieved through regulation. At this time, the driving mechanism 5 at the other end can be used to clamp both ends of the rubber blank at the same time. After clamping and fixing, the driving mechanism 5 and the positioning and clamping assembly 6 can be controlled to move upward to drive the clamped rubber blank to move upward inside the grinding cavity 8 until it contacts the grinding mechanism 3 at the top, so as to achieve grinding of the outer circle of the surface of the rubber blank. During the entire grinding process, the grinding channel 15 at the top of the grinding cavity 8 is always blocked and closed by the closing mechanism to prevent the debris and dust generated during the grinding process from floating out to the outside.

[0027] In this embodiment, a dust collection box 13 is installed at the bottom of the machine tool 1, and a blower 2 is installed on one side of the machine tool 1. A lifting groove 9 and a placement groove 10 are respectively provided at both ends of the grinding cavity 8, and an air inlet hole 11 and an exhaust hole 12 are also provided on the inner wall of the grinding cavity 8. The blower 2 is installed on the outside of the air inlet hole 11, and the blower 2 blows the external air flow from the air inlet hole 11 into the inside of the grinding cavity 8. The driving mechanism 5 is installed to cover the outside of the lifting groove 9, and the positioning clamping assembly 6 is installed to cover the outside of the placement groove 10. A door panel is installed on the side of the machine tool 1, and the outside of the exhaust hole 12 is partially connected to the dust collection box 13 at the bottom through a pipe. A semicircular grinding cavity 8 is adopted, and the grinding cavity 8 is sealed by a top closing component 4 in cooperation with the driving mechanism 5 and the positioning clamping component 6 at both ends, so that the debris and dust in the grinding process can be prevented from being scattered to the outside, and the entire grinding process is always completed inside the grinding cavity 8, which reduces pollution and effectively reduces noise.

[0028] Specifically, since the two ends of the grinding cavity 8 are respectively partially closed and blocked by the driving mechanism 5 and the positioning clamping assembly 6, and the top is blocked by the grinding mechanism 3 and the closing assembly 4, the interior of the grinding cavity 8 is in an approximately closed state. After the blower 2 is started during the grinding process, the external airflow can be blown into the grinding cavity 8. At this time, the dust and debris generated by the grinding wheel 27 contacting and grinding the surface of the rubber blank can be introduced into the exhaust hole 12 on the other side along the blown airflow, and finally blown into the dust collection box 13 along the pipeline through the exhaust hole 12. The noise during the grinding process can also be reduced by blocking the closed grinding cavity 8.

[0029] In this embodiment, the grinding mechanism 3 includes a shell 22 and a grinding wheel 27. A first motor 23 is installed on one side of the shell 22. The grinding wheel 27 is fixedly installed at the bottom of the shell 22. A first side plate 24 and a second side plate 25 are respectively installed on both sides of the shell 22. A slider 30 is provided at the bottom end of the shell 22. The output end part of the first motor 23 drives the inner grinding wheel 27 through the gear 19 structure. The two ends of the slider 30 are embedded in the interior of the slide groove 16. The bottom of the grinding wheel 27 passes through the grinding channel 15 and is embedded in the grinding cavity 8. A threaded sleeve 26 is installed at the end of the second side plate 25. A screw rod 29 is inserted in the middle of the threaded sleeve 26, and a second motor 28 is installed at one end of the screw rod 29. Specifically, during the grinding process, after starting the first motor 23, the grinding wheel 27 can be driven to rotate by the gear 19 group on the output shaft of the first motor 23. The bottom of the grinding wheel 27 is embedded in the grinding cavity 8. Therefore, it is only necessary to control the rubber blank to move up so that the surface of the rubber blank can contact the bottom of the grinding wheel 27, and the outer circle grinding process can be realized during high-speed rotation. During this process, the second motor 28 is rotated to make the screw rod 29 and the threaded sleeve 26 cooperate, so that the entire grinding mechanism 3 can be controlled to translate, thereby changing the contact position of the grinding wheel 27 with the bottom rubber blank surface.

[0030] In this embodiment, the closing component 4 includes a reel 18 and a rubber membrane 21, and reel boxes 17 are provided at both ends of the surface of the top plate 14. The reel 18 is installed inside the reel box 17, and the rubber membrane 21 is wound on the surface of the reel 18. A gear 19 is installed at one end of the reel 18, and a toothed belt 20 is sleeved on the surface of the gear 19. Both ends of the toothed belt 20 are fixedly connected to both sides of the first side plate 24, and one end of each rubber membrane 21 is bonded to both sides of the outer shell 22 as a whole, and the edge of the rubber membrane 21 is embedded in the interior of the slide groove 16, and both ends of the reel 18 are embedded in the inner wall end of the reel box 17 through bearings.

[0031] Specifically, when the internal rubber blank is polished through the translation process of the above-mentioned polishing mechanism 3, the two ends of the outer shell 22 will contact the two rubber films 21 respectively, thereby pulling the rubber films 21 to move synchronously, so as to ensure that during the entire polishing process, the polishing channel 15 is always partially covered by the rubber film 21 to prevent dust and debris generated in the polishing cavity 8 below from floating out from the top. In this process, through the sliding of the outer shell 22 and the connection effect between the second side plate 25 and the toothed belt 20, the gears 19 at both ends can be pulled to rotate with the help of the toothed belt 20, thereby driving the reel 18 to rotate, and the reels 18 at both ends can be used to roll and unwind the rubber film 21 wound on the surface, respectively, thereby achieving the effect of synchronous movement of the polishing mechanism 3 and the two rubber films 21.

[0032] In this embodiment, the driving mechanism 5 includes a third motor 37 and a closed baffle 38. The third motor 37 is fixedly mounted on the outside of the closed baffle 38. A chuck fixture 39 is mounted on the output shaft of the third motor 37. The surface of the closed baffle 38 fits the surface of the machine tool 1 around the lifting slot 9. The positioning clamping assembly 6 includes a threaded column 34, a rear baffle 33 and a front baffle 35. The bottoms of the rear baffle 33 and the front baffle 35 are connected to a support plate 32. The surface of the rear baffle 33 is interspersed with a threaded column 34. A positioning cone handle 36 is inserted in the middle of the front baffle 35, and the end of the threaded column 34 is fixed to the positioning cone handle 36 as a whole. The bottom of the support plate 32 and the bottom of the third motor 37 are both installed with electric lifting rods 31, and the bottom end of each electric lifting rod 31 is fixedly connected to the surface of the base 7. The surface of the front baffle 35 fits the surface of the machine tool 1 around the placement slot 10. Each of the electric lifting rods 31 keeps synchronous lifting, and the central axis of the positioning cone handle 36 coincides with the central axis of the chuck fixture 39. The bottom arc structure of the grinding cavity 8 can also provide support for the rubber blank during installation. Therefore, when placing the rubber blank, it can be directly placed inside the grinding cavity 8, which can assist in positioning the bottom edge of the rubber blank through the bottom arc surface, and ensure that the rubber blank is completely parallel to the bottom straight line of the grinding cavity 8, avoiding bending, tilting and other offset problems after clamping.

[0033] By grinding the bottom of the cavity 8, the effect of automatic positioning and correction of the rubber blank is achieved. Therefore, when the rubber blank is clamped subsequently, it is only necessary to align the positioning clamping assembly 6 with the center point of one end of the rubber blank and press it against it, and the rubber blank can be automatically pushed toward the other end until it is docked and assembled with the driving mechanism 5. The entire clamping process is simple and convenient, and there is no need to calibrate and detect the horizontality of the rubber blank. Specifically, when clamping, first rotate the threaded column 34 to move the positioning cone handle 36 backward, and the two electric lifting rods 31 are always lifted and lowered synchronously. Therefore, first control the driving mechanism 5 and the positioning clamping assembly 6 to move up until the bottom end of the front baffle 35 in the positioning clamping assembly 6 is lifted to the top of the placement groove 10. At this time, the rubber blank can be inserted from the placement groove 10 into the grinding cavity 8, and then control the positioning clamping assembly 6 to move down, and by controlling the extension height of the electric lifting rod 31, the tip part of the positioning cone handle 36 is controlled to be aligned with the center point of one end of the rubber blank, and then rotate the threaded column 34 until the tip of the positioning cone handle 36 is pressed against the rubber blank. Since the bottom of the rubber blank is supported by the bottom of the arc-shaped grinding cavity 8, the center axis of the rubber blank, the bottom straight line of the grinding cavity 8 and The central axis of the positioning cone tip and the chuck fixture 39 are all in the same vertical plane. Therefore, only the lifting and lowering movement of the positioning cone handle 36 on the vertical plane is controlled to ensure that the positioning cone handle 36 can eventually be completely aligned with the center point of the end face of the rubber blank. After alignment and the rubber blank is pressed against the positioning cone handle 36, the rubber blank can be pushed until the other end of the rubber blank is pressed against the chuck fixture 39 of the driving mechanism 5 to clamp the other end of the rubber blank. A door panel is provided on the side of the machine tool 1. By opening the door panel, the chuck fixture 39 can be controlled to clamp the other end of the rubber blank. The chuck fixture 39 is an existing mature technology and a common structure in the processing field of the machine tool 1. It does not belong to the protection scope of the present invention, so its specific structure and principle are not described here.

[0034] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. In addition, it should be understood that although this specification is described in accordance with the implementation methods, not every implementation method contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A rubber manufacturing cylindrical grinding machine, comprising a grinding machine body, characterized in that: The grinding machine body comprises a machine tool (1), a grinding mechanism (3), a closing component (4) and a positioning clamping component (6); a base (7) is installed at the bottom of the machine tool (1); a top plate (14) is installed at the top of the machine tool (1); a grinding channel (15) is provided in the middle of the top plate (14); a slide groove (16) is provided on the inner side of the grinding channel (15); closing components (4) are installed at both ends of the top plate (14); the grinding mechanism (3) is installed on the top of the grinding channel (15); each closing component (4) is connected to a part of the grinding mechanism (3); a grinding cavity (8) is provided inside the machine tool (1); and the grinding cavity (8) is of a semicircular structure as a whole; the closing component (4) and a positioning clamping assembly (6) are respectively mounted at two ends of the machine tool (1), and the bottoms of the closing assembly (4) and the positioning clamping assembly (6) are both mounted on a base (7); the grinding mechanism (3) as a whole moves horizontally along a grinding channel (15); a dust collecting box (13) is mounted at the bottom of the machine tool (1); a blower (2) is mounted on one side of the machine tool (1); a lifting groove (9) and a placement groove (10) are respectively provided at two ends of the grinding cavity (8); an air inlet (11) and an air outlet (12) are also provided on the inner wall of the grinding cavity (8); the grinding mechanism (3) comprises a housing (22) and a grinding wheel (27); a first motor (23) is mounted on one side of the housing (22); and the grinding wheel (27) is provided on the inner wall of the housing (22). The wheel (27) is fixedly mounted on the bottom of the housing (22). The first side plate (24) and the second side plate (25) are respectively mounted on both sides of the housing (22). A slider (30) is arranged at the bottom end of the housing (22). The output end of the first motor (23) drives the inner grinding wheel (27). Both ends of the slider (30) are embedded in the interior of the slide groove (16). The bottom of the grinding wheel (27) passes through the grinding channel (15) and is embedded in the grinding cavity (8). A threaded sleeve (26) is mounted at the end of the second side plate (25). A screw rod (29) is inserted in the middle of the threaded sleeve (26). A second motor (28) is mounted at one end of the screw rod (29). The closing component (4) includes The invention comprises a reel (18) and a rubber membrane (21), the two ends of the surface of the top plate (14) are provided with a reel box (17), the reel (18) is installed inside the reel box (17), the rubber membrane (21) is wound on the surface of the reel (18), a gear (19) is installed at one end of the reel (18), the surface of the gear (19) is sleeved with a toothed belt (20), the two ends of the toothed belt (20) are fixedly connected to the two sides of the first side plate (24), one end of each rubber membrane (21) is bonded to the two sides of the shell (22) as a whole, and the edge of the rubber membrane (21) is embedded in the inside of the slide groove (16), and the two ends of the reel (18) are embedded in the inner wall end of the reel box (17) through bearings.

2. A rubber manufacturing cylindrical grinding machine according to claim 1, characterized in that: The blower (2) is installed on the outside of the air inlet (11), and the blower (2) blows external airflow from the air inlet (11) into the interior of the grinding cavity (8); the outside of the lifting groove (9) is covered with a driving mechanism (5); the positioning clamping assembly (6) is installed and covered on the outside of the placement groove (10); a door panel is installed on the side of the machine tool (1); and the outside of the exhaust hole (12) is partially connected to the dust collection box (13) at the bottom through a pipeline.

3. A rubber manufacturing cylindrical grinding machine according to claim 2, characterized in that: The driving mechanism (5) comprises a third motor (37) and a closed baffle (38); the third motor (37) is fixedly mounted on the outside of the closed baffle (38); a chuck fixture (39) is mounted on the output shaft of the third motor (37); and the surface of the closed baffle (38) is in contact with the surface of the machine tool (1) around the lifting slot (9).

4. A rubber manufacturing cylindrical grinding machine according to claim 3, characterized in that: The positioning clamping assembly (6) comprises a threaded column (34), a rear baffle (33) and a front baffle (35); the bottoms of the rear baffle (33) and the front baffle (35) are connected to a support plate (32); the surface of the rear baffle (33) is penetrated by a threaded column (34); the middle of the front baffle (35) is penetrated by a positioning cone handle (36); and the end of the threaded column (34) is fixed to the positioning cone handle (36) as a whole.

5. A rubber manufacturing cylindrical grinding machine according to claim 4, characterized in that: The bottom of the support plate (32) and the bottom of the third motor (37) are both equipped with electric lifting rods (31), and the bottom end of each electric lifting rod (31) is fixedly connected to the surface of the base (7). The surface of the front baffle (35) is in contact with the surface of the machine tool (1) around the placement groove (10). Each of the electric lifting rods (31) is lifted and lowered synchronously, and the central axis of the positioning cone handle (36) coincides with the central axis of the chuck fixture (39).

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