Cam grinding machine

Abstract

The utility model provides a cam grinding machine, and belongs to the technical field of grinding machine equipment. The machine tool comprises a machine tool body and a workbench arranged on the machine tool body and distributed in the length direction of the machine tool body, a headstock and a tailstock are arranged on the two sides of the workbench respectively, a machined part is fixed between the headstock and the tailstock, and a grinding wheel grinding mechanism capable of conducting feed grinding to complete the cam contour face of the machined part is arranged on the machine tool body. The grinding wheel grinding mechanism is slidably connected with the machine tool body through a main sliding plate at the bottom end, a cam polishing mechanism is further arranged on the main sliding plate and comprises a polishing abrasive belt, and a feeding polishing structure capable of enabling the polishing abrasive belt to move in the direction perpendicular to the axial direction of the workbench so as to achieve feeding polishing is arranged between the main sliding plate and the cam polishing mechanism. A main sliding plate shifting structure is further arranged between the main sliding plate and the machine tool body. The grinding machine can cut and polish a machined part at the same time, the downtime in the machining process is effectively shortened, and the machining precision of the cam can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of grinding machine equipment and relates to a cam grinding machine. Background Art

[0002] Camshafts are important parts for automobile engines and other internal combustion engines, and their processing quality directly affects the quality of automobiles. The cam profile of the camshaft is usually ground by a cam grinder. After the cam profile of the camshaft is processed, there will be burrs, scales, rust and other defects on its surface. Therefore, the camshaft needs to be transferred to a polishing device for polishing. During the transfer of the camshaft, there will be downtime, and multiple clamping and positioning will waste processing time, making the processing process discontinuous, low processing efficiency, and leading to an increase in production cycle. Utility Model Content

[0003] The purpose of the utility model is to provide a cam grinder in view of the above problems.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A cam grinder comprises a machine tool bed and a worktable arranged on the machine tool bed and distributed along the length direction of the machine tool bed, a headstock and a tailstock are respectively provided on both sides of the worktable, a workpiece is fixed between the headstock and the tailstock, a grinding wheel grinding mechanism capable of performing feed grinding to complete the cam contour surface of the workpiece is provided on the machine tool bed, the grinding wheel grinding mechanism is slidably connected to the machine tool bed through a main slide at the bottom, a cam polishing mechanism is also provided on the main slide, the cam polishing mechanism comprises a polishing belt, a feed polishing structure capable of displacing the polishing belt in a direction perpendicular to the axial direction of the worktable to achieve feed polishing is provided between the main slide and the cam polishing mechanism, and a main slide displacement structure is also provided between the main slide and the machine tool bed.

[0006] Simultaneous cutting and polishing can reduce downtime during machining and make the machining process more continuous, thereby significantly improving machining efficiency. This not only shortens the production cycle, but also reduces production costs. In addition, completing multiple processes in one machining process can reduce errors that may be caused by multiple clamping and positioning, which helps to ensure the machining accuracy of the cam and improve its motion performance and reliability.

[0007] In the above-mentioned cam grinder, the cam polishing mechanism includes a polishing frame arranged on the main slide, the polishing frame includes a polishing vertical plate and a polishing fixed plate arranged at the bottom end of the polishing vertical plate, a polishing active wheel is arranged on the outer side wall of the polishing vertical plate, a moving wheel driver is arranged on the polishing fixed plate, the output end of the moving wheel driver is connected to the polishing active wheel, a polishing driven wheel is arranged on the upper end of the polishing vertical plate, and a sanding belt guide assembly is also arranged on the polishing vertical plate, the sanding belt guide assembly includes a vertically arranged guide frame, guide pulleys are respectively arranged at both ends of the guide frame, the polishing belt is closed and wound around the polishing active wheel, the polishing driven wheel and the guide pulley, and a first adjustment mechanism is arranged between the polishing driven wheel and the polishing vertical plate, which can adjust the vertical height of the polishing driven wheel to adjust the tightness of the polishing belt.

[0008] The driving wheel driver drives the polishing driving wheel to rotate, driving the polishing belt closed and wound around the polishing driving wheel, the polishing driven wheel and the guide pulley to rotate for polishing. The guide pulleys at both ends of the guide frame guide the polishing belt. The first adjustment mechanism between the polishing driven wheel and the polishing vertical plate can adjust the vertical height of the polishing driven wheel to adjust the tightness of the polishing belt, so that the polishing belt maintains an appropriate tightness.

[0009] In the above-mentioned cam grinder, the first adjustment mechanism includes a supporting vertical plate arranged on the inner side wall of the polishing vertical plate, the upper end of the supporting vertical plate is hinged with a driven wheel positioning plate through a hinge, the outer side wall of the driven wheel positioning plate is provided with the above-mentioned polishing driven wheel, the polishing vertical plate is provided with a mounting seat, the mounting seat is provided with an adjustment driver, and the output end of the adjustment driver is connected to the upper end of the driven wheel positioning plate.

[0010] When the output end of the adjusting driver is extended, the driven wheel positioning plate can rotate clockwise around the hinge, thereby increasing the vertical height of the polishing driven wheel to tighten the polishing belt. When the output end of the adjusting driver is retracted, the driven wheel positioning plate can rotate counterclockwise around the hinge, thereby reducing the vertical height of the polishing driven wheel to loosen the polishing belt, so as to flexibly adjust the tightness of the polishing belt to keep the polishing belt at an appropriate tightness.

[0011] In the above-mentioned cam grinder, a second adjustment mechanism is provided between the guide frame and the mounting seat, which can adjust the horizontal distance between the guide frame and the mounting seat to adjust the tension of the polishing belt.

[0012] The second adjusting mechanism can adjust the horizontal distance between the guide frame and the mounting seat, and can adjust the expansion tightness of the polishing belt to keep the polishing belt at an appropriate expansion tightness.

[0013] In the above-mentioned cam grinder, the second adjustment mechanism includes an adjustment slide horizontally arranged at the middle end of the guide frame, an adjustment groove slidingly matched with the adjustment slide is provided in the mounting seat, a locking bolt is passed through the mounting seat, and a plurality of locking screw holes matching the locking bolt are evenly distributed on the adjustment slide along the length direction of the adjustment slide.

[0014] The adjusting slide plate at the middle end of the guide frame can slide in the adjusting slot in the mounting seat to adjust the horizontal distance between the guide frame and the mounting seat. The adjusting slide plate slides outward in the adjusting slot and can synchronously drive the guide pulley to move horizontally outward to tighten the polishing belt. The adjusting slide plate slides inward in the adjusting slot and can synchronously drive the guide pulley to move horizontally inward to loosen the polishing belt. The expansion degree of the polishing belt can be flexibly adjusted to keep the polishing belt at an appropriate expansion degree. When the adjusting slide plate slides to an appropriate position in the adjusting slot, the locking bolt passing through the mounting seat is screwed into the corresponding locking screw hole on the adjusting slide plate to achieve a firm fixation of the adjusting slide plate.

[0015] In the above-mentioned cam grinder, the feed polishing structure includes two feed slide rails arranged on the main slide and distributed in a direction perpendicular to the axial direction of the worktable. The bottom end of the polishing fixed plate is provided with a feed slider that slides with the feed slide rails. The main slide is also provided with a feed drive assembly.

[0016] The feed drive assembly on the main slide can drive the polishing fixed plate to slide on the main slide in a direction perpendicular to the axial direction of the worktable to realize the feeding polishing of the polishing belt. During the sliding process of the polishing fixed plate, the feed slider at the bottom end of the polishing fixed plate slides along the feed slide rail, guiding the sliding of the polishing fixed plate and preventing the polishing fixed plate from shifting.

[0017] In the above-mentioned cam grinder, the feed drive assembly includes a feed driver arranged on the main slide, the output end of the feed driver is arranged in a direction perpendicular to the axial direction of the worktable, and the polishing fixing plate is provided with a drive connecting plate near the worktable side, and the drive connecting plate is connected to the output end of the feed driver.

[0018] The output end of the feed driver extends out through the driving connecting plate to drive the polishing fixed plate to slide toward the workbench along the guide of the feed slide rail, so that the polishing belt is fed and polished. The output end of the feed driver retracts through the driving connecting plate to reset the polishing fixed plate.

[0019] In the above-mentioned cam grinder, the main slide displacement structure includes two displacement slides arranged on the machine tool bed and distributed along the axial direction of the worktable, the displacement slides are provided with displacement slide rails distributed along the length direction of the displacement slides, the bottom end of the main slide is provided with a displacement slider which slides with the displacement slide rails, and a displacement drive assembly is provided between the machine tool bed and the main slide.

[0020] The shift drive assembly between the machine tool bed and the main slide can drive the main slide to slide on the machine tool bed along the axial direction of the worktable to complete the grinding and polishing of the various contour surfaces of the cam. During the sliding of the main slide, the shift slider at the bottom of the main slide slides along the shift slide rail, guiding the sliding of the main slide and preventing the main slide from shifting.

[0021] In the above-mentioned cam grinder, the shift drive assembly includes a shift drive screw arranged on the machine tool bed and between the two shift slides, the shift drive screw is arranged along the axial direction of the worktable, the screw nut of the shift drive screw is connected to the bottom end of the main slide, the two ends of the shift drive screw are respectively fixed by screw positioning seats, the machine tool bed is provided with a screw driver, and the output end of the screw driver is connected to the shift drive screw.

[0022] The operation of the screw driver can drive the shift drive screw to rotate, so that the screw nut on the shift drive screw is displaced axially along the shift drive screw, and simultaneously drives the main slide to slide along the axial direction of the workbench on the machine tool bed to complete the grinding and polishing of each contour surface of the cam.

[0023] In the above-mentioned cam grinder, the lower fixed end of the adjusting driver is hingedly connected to the mounting seat.

[0024] The lower end of the adjustment actuator is hingedly connected to the mounting base, which can provide flexibility and effectively reduce stress and impact.

[0025] Compared with the existing technology, the advantages of the utility model are: 1. The grinder can cut and polish the workpiece at the same time, effectively reducing the downtime during the processing, making the processing flow more continuous, and thus significantly improving the processing efficiency. 2. Completing multiple processes in one processing can reduce the errors that may be caused by multiple clamping and positioning, which helps to ensure the processing accuracy of the cam. 3. The expansion of the polishing belt can be flexibly adjusted to ensure that the polishing belt maintains an appropriate expansion. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure provided by the utility model;

[0027] Figure 2 It is a front view provided by the utility model;

[0028] Figure 3 It is a structural schematic diagram of the cam polishing mechanism;

[0029] Figure 4 It is a side view provided by the utility model.

[0030] In the figure, a machine tool bed 1, a worktable 2, a headstock 3, a tailstock 4, a workpiece 5, a grinding wheel grinding mechanism 6, a main slide 7, a cam polishing mechanism 8, a polishing belt 9, a feed polishing structure 10, a main slide shifting structure 11, a polishing frame 12, a polishing vertical plate 13, a polishing fixed plate 14, a driving wheel driver 15, a polishing driven wheel 16, a sanding belt guide assembly 17, a guide frame 18, a guide pulley 19, a first adjustment mechanism 20, a supporting vertical plate 21, a hinge 22, Driven wheel positioning plate 23, mounting seat 24, adjustment driver 25, second adjustment mechanism 26, adjustment slide plate 27, locking bolt 28, locking screw hole 29, feed slide rail 30, feed slider 31, feed drive assembly 32, feed driver 33, drive connecting plate 34, shift slide 35, shift slide rail 36, shift slider 37, shift drive assembly 38, shift drive screw 39, screw nut 40, screw positioning seat 41, screw driver 42. DETAILED DESCRIPTION

[0031] like Figure 1-Figure 4 As shown, a cam grinder comprises a machine bed 1 and a worktable 2 arranged on the machine bed 1 and distributed along the length direction of the machine bed 1, a headstock 3 and a tailstock 4 are respectively provided on both sides of the worktable 2, a workpiece 5 is fixed between the headstock 3 and the tailstock 4, a grinding wheel grinding mechanism 6 capable of performing feed grinding to complete the cam contour surface of the workpiece 5 is provided on the machine bed 1, the grinding wheel grinding mechanism 6 is slidably connected to the machine bed 1 through a main slide 7 at the bottom end, the main slide 7 is also provided with a cam polishing mechanism 8, the cam polishing mechanism 8 includes a polishing belt 9, a feed polishing structure 10 capable of shifting the polishing belt 9 in a direction perpendicular to the axial direction of the worktable 2 to achieve feed polishing is provided between the main slide 7 and the cam polishing mechanism 8, and a main slide displacement structure 11 is also provided between the main slide 7 and the machine bed 1.

[0032] In the utility model, the headstock 3 and the tailstock 4 on the workbench 2 are used to fix the workpiece 5 and drive the workpiece 5 to rotate and perform grinding and polishing with the grinding wheel grinding mechanism 6 and the polishing belt 9 respectively. The grinding wheel grinding mechanism 6 can shift along the axial direction perpendicular to the workbench 2 to feed and grind the workpiece 5 to complete the cam contour surface of the workpiece 5. The cam polishing mechanism 8 on the main slide 7 can shift along the axial direction perpendicular to the workbench 2 through the feeding polishing structure 10 to feed and polish the cam contour surface, which can effectively remove the defects on the cam surface and improve the surface quality. The main slide displacement structure 11 between the main slide 7 and the machine tool bed 1 can drive the main slide 7 to slide along the axial direction of the workbench 2. During the sliding process of the main slide 7, the grinding wheel grinding mechanism 6 on the main slide 7 can complete the grinding of each cam contour surface of the workpiece 5, and at the same time, the polishing belt 9 of the cam polishing mechanism 8 can polish each cam contour surface of the workpiece 5.

[0033] Simultaneous cutting and polishing can reduce downtime during machining and make the machining process more continuous, thereby significantly improving machining efficiency. This not only shortens the production cycle, but also reduces production costs. In addition, completing multiple processes in one machining process can reduce errors that may be caused by multiple clamping and positioning, which helps to ensure the machining accuracy of the cam and improve its motion performance and reliability.

[0034] Specifically, combined with Figure 1-Figure 3 As shown, the cam polishing mechanism 8 includes a polishing frame 12 arranged on the main slide 7, the polishing frame 12 includes a polishing vertical plate 13 and a polishing fixed plate 14 arranged at the bottom end of the polishing vertical plate 13, a polishing active wheel is provided on the outer wall of the polishing vertical plate 13, a moving wheel driver 15 is provided on the polishing fixed plate 14, the output end of the moving wheel driver 15 is connected to the polishing active wheel, a polishing driven wheel 16 is provided at the upper end of the polishing vertical plate 13, and a sanding belt guide assembly 17 is also provided on the polishing vertical plate 13, the sanding belt guide assembly 17 includes a vertically arranged guide frame 18, guide pulleys 19 are respectively provided at both ends of the guide frame 18, the polishing belt 9 is closed and wound around the polishing active wheel, the polishing driven wheel 16 and the guide pulley 19, and a first adjusting mechanism 20 is provided between the polishing driven wheel 16 and the polishing vertical plate 13, which can adjust the vertical height of the polishing driven wheel 16 to adjust the tightness of the polishing belt 9.

[0035] The driving wheel driver 15 drives the polishing driving wheel to rotate, driving the polishing belt 9 closed and wound around the polishing driving wheel, the polishing driven wheel 16 and the guide pulley 19 to rotate for polishing. The guide pulleys 19 at both ends of the guide frame 18 guide the polishing belt 9. The first adjustment mechanism 20 between the polishing driven wheel 16 and the polishing vertical plate 13 can adjust the vertical height of the polishing driven wheel 16 to adjust the expansion of the polishing belt 9, so that the polishing belt 9 maintains an appropriate expansion. Appropriate belt expansion is the basis for the normal operation of the polishing belt 9. Appropriate belt expansion can make the polishing belt 9 fit closely to the surface of the workpiece, provide sufficient sanding force, and achieve precise polishing and cutting, which helps to improve processing efficiency and processing quality.

[0036] Specifically, combined with Figure 3 As shown, the first adjustment mechanism 20 includes a supporting plate 21 arranged on the inner side wall of the polishing plate 13, the upper end of the supporting plate 21 is hinged with a driven wheel positioning plate 23 through a hinge 22, the outer side wall of the driven wheel positioning plate 23 is provided with the above-mentioned polishing driven wheel 16, the polishing plate 13 is provided with a mounting seat 24, the mounting seat 24 is provided with an adjustment driver 25, and the output end of the adjustment driver 25 is connected to the upper end of the driven wheel positioning plate 23.

[0037] When the output end of the adjusting driver 25 is extended, the driven wheel positioning plate 23 can rotate clockwise around the hinge 22, thereby increasing the vertical height of the polishing driven wheel 16 to tighten the polishing belt 9. When the output end of the adjusting driver 25 is retracted, the driven wheel positioning plate 23 can rotate counterclockwise around the hinge 22, thereby lowering the vertical height of the polishing driven wheel 16 to loosen the polishing belt 9, so as to flexibly adjust the tightness of the polishing belt 9 to keep the polishing belt 9 at an appropriate tightness.

[0038] Specifically, combined with Figure 3 As shown, a second adjustment mechanism 26 is provided between the guide frame 18 and the mounting seat 24 , which can adjust the horizontal distance between the guide frame 18 and the mounting seat 24 to adjust the expansion degree of the polishing belt 9 .

[0039] The second adjustment mechanism 26 between the guide frame 18 and the mounting seat 24 can adjust the horizontal distance between the guide frame 18 and the mounting seat 24, and can adjust the expansion tightness of the polishing belt 9 to keep the polishing belt 9 at an appropriate expansion tightness.

[0040] Specifically, combined with Figure 3 As shown, the second adjustment mechanism 26 includes an adjustment slide 27 horizontally arranged at the middle end of the guide frame 18, an adjustment groove slidably matched with the adjustment slide 27 is provided in the mounting seat 24, a locking bolt 28 is passed through the mounting seat 24, and a plurality of locking screw holes 29 are evenly distributed on the adjustment slide 27 along the length direction of the adjustment slide 27 and matched with the locking bolt 28.

[0041] The adjusting slide 27 at the middle end of the guide frame 18 can slide in the adjusting slot in the mounting seat 24 to adjust the horizontal distance between the guide frame 18 and the mounting seat 24. The adjusting slide 27 slides outward in the adjusting slot and can synchronously drive the guide pulley 19 to move horizontally outward to tighten the polishing belt 9. The adjusting slide 27 slides inward in the adjusting slot and can synchronously drive the guide pulley 19 to move horizontally inward to loosen the polishing belt 9. The expansion degree of the polishing belt 9 can be flexibly adjusted to keep the polishing belt 9 at an appropriate expansion degree. When the adjusting slide 27 slides to an appropriate position in the adjusting slot, the locking bolt 28 passing through the mounting seat 24 is screwed into the corresponding locking screw hole 29 on the adjusting slide 27 to achieve a firm fixation of the adjusting slide 27.

[0042] Specifically, combined with Figure 1 and Figure 3 As shown, the feed polishing structure 10 includes two feed rails 30 arranged on the main slide 7 and distributed along the axial direction perpendicular to the workbench 2. A feed slider 31 slidingly matched with the feed rails 30 is provided at the bottom end of the polishing fixed plate 14, and a feed drive assembly 32 is also provided on the main slide 7.

[0043] The feed drive assembly 32 on the main slide 7 can drive the polishing fixed plate 14 to slide on the main slide 7 in a direction perpendicular to the axial direction of the workbench 2 to realize the feeding polishing of the polishing belt 9. During the sliding of the polishing fixed plate 14, the feed slider 31 at the bottom end of the polishing fixed plate 14 slides along the feed slide rail 30, which guides the sliding of the polishing fixed plate 14 and can prevent the polishing fixed plate 14 from shifting.

[0044] Specifically, combined with Figure 1 and Figure 3 As shown, the feed drive assembly 32 includes a feed driver 33 arranged on the main slide 7, and the output end of the feed driver 33 is arranged in a direction perpendicular to the axial direction of the workbench 2. The polishing fixing plate 14 is provided with a drive connecting plate 34 near the workbench 2, and the drive connecting plate 34 is connected to the output end of the feed driver 33.

[0045] The output end of the feed driver 33 extends out through the driving connecting plate 34 to drive the polishing fixed plate 14 to slide along the guide of the feed slide rail 30 toward the workbench 2, so that the polishing belt 9 is fed and polished. The output end of the feed driver 33 retracts through the driving connecting plate 34 to reset the polishing fixed plate 14.

[0046] Specifically, combined with Figure 1 , Figure 3 and Figure 4 As shown, the main slide shifting structure 11 includes two shift slides 35 arranged on the machine tool bed 1 and distributed along the axial direction of the worktable 2, the shift slides 35 are provided with shift rails 36 distributed along the length direction of the shift slides 35, the bottom end of the main slide 7 is provided with a shift slider 37 that slides with the shift rails 36, and a shift drive assembly 38 is provided between the machine tool bed 1 and the main slide 7.

[0047] The shift drive assembly 38 between the machine tool bed 1 and the main slide 7 can drive the main slide 7 to slide on the machine tool bed 1 along the axial direction of the worktable 2 to complete the grinding and polishing of the various contour surfaces of the cam. During the sliding of the main slide 7, the shift slider 37 at the bottom end of the main slide 7 slides along the shift slide rail 36, which guides the sliding of the main slide 7 and can prevent the main slide 7 from shifting.

[0048] Specifically, combined with Figure 1 , Figure 3 and Figure 4 As shown, the shift drive assembly 38 includes a shift drive screw 39 arranged on the machine tool bed 1 and between the two shift slides 35. The shift drive screw 39 is arranged along the axial direction of the workbench 2. The screw nut 40 of the shift drive screw 39 is connected to the bottom end of the main slide 7. The two ends of the shift drive screw 39 are respectively fixed by screw positioning seats 41. A screw driver 42 is provided on the machine tool bed 1, and the output end of the screw driver 42 is connected to the shift drive screw 39.

[0049] The operation of the screw driver 42 can drive the shift drive screw 39 to rotate, so that the screw nut 40 on the shift drive screw 39 is axially displaced along the shift drive screw 39, and synchronously drives the main slide 7 to slide along the axial direction of the workbench 2 on the machine tool bed 1 to complete the grinding and polishing of each contour surface of the cam.

[0050] Preferably, combined Figure 3 As shown, the lower fixed end of the adjusting driver 25 is hingedly connected to the mounting seat 24 .

[0051] The lower end of the adjustment driver 25 is hingedly connected to the mounting seat 24, which can provide flexibility and effectively reduce stress and impact.

[0052] The working principle of the utility model is as follows: the headstock 3 and the tailstock 4 on the workbench 2 are used to fix the workpiece 5 and drive the workpiece 5 to rotate and perform grinding and polishing with the grinding wheel grinding mechanism 6 and the polishing belt 9 respectively. The grinding wheel grinding mechanism 6 can shift along the axial direction perpendicular to the workbench 2 to feed and grind the workpiece 5 to complete the cam profile surface of the workpiece 5. The polishing belt 9 on the cam polishing mechanism 8 can shift along the axial direction perpendicular to the workbench 2 to feed and polish the cam profile surface.

[0053] The operation of the screw driver 42 can drive the shift drive screw 39 to rotate, so that the screw nut 40 on the shift drive screw 39 is axially displaced along the shift drive screw 39, and synchronously drives the main slide 7 to slide along the axial direction of the worktable 2 on the machine tool bed 1. During the sliding process of the main slide 7, the grinding wheel grinding mechanism 6 on the main slide 7 can complete the grinding of each cam profile surface of the workpiece 5, and at the same time, the polishing belt 9 of the cam polishing mechanism 8 can polish each cam profile surface of the workpiece 5; at the same time, cutting and polishing can reduce the downtime during the processing, making the processing flow more continuous, thereby significantly improving the processing efficiency, which not only shortens the production cycle, but also reduces the production cost, and completes multiple processes in one processing, which can reduce the errors that may be caused by multiple clamping and positioning, which helps to ensure the processing accuracy of the cam and improve its motion performance and reliability;

[0054] The driving wheel driver 15 drives the polishing driving wheel to rotate, driving the polishing belt 9 wound around the polishing driving wheel, the polishing driven wheel 16 and the guide pulley 19 to rotate for polishing;

[0055] The output end of the adjusting driver 25 is extended to make the driven wheel positioning plate 23 rotate clockwise around the hinge 22, thereby increasing the vertical height of the polishing driven wheel 16 to tighten the polishing belt 9; the output end of the adjusting driver 25 is retracted to make the driven wheel positioning plate 23 rotate counterclockwise around the hinge 22, thereby reducing the vertical height of the polishing driven wheel 16 to loosen the polishing belt 9, so as to flexibly adjust the tension of the polishing belt 9 to keep the polishing belt 9 at an appropriate tension; the adjusting slide 27 slides outward in the adjusting slot to The guide pulley 19 is synchronously driven to move horizontally outward to tighten the polishing belt 9. The adjusting slide plate 27 slides inward in the adjusting slide groove to synchronously drive the guide pulley 19 to move horizontally inward to loosen the polishing belt 9. The expansion degree of the polishing belt 9 can be flexibly adjusted to keep the polishing belt 9 at an appropriate expansion degree. When the adjusting slide plate 27 slides to an appropriate position in the adjusting slide groove, the locking bolt 28 penetrated through the mounting seat 24 is screwed into the corresponding locking screw hole 29 on the adjusting slide plate 27 to fix the adjusting slide plate 27.

[0056] The output end of the feed driver 33 extends out through the driving connecting plate 34 to drive the polishing fixed plate 14 to slide along the guide of the feed slide rail 30 toward the workbench 2, so that the polishing belt 9 is fed and polished. The output end of the feed driver 33 retracts through the driving connecting plate 34 to reset the polishing fixed plate 14.

[0057] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0058] Although this article uses more machine tool bed 1, workbench 2, headstock 3, tailstock 4, workpiece 5, grinding wheel grinding mechanism 6, main slide 7, cam polishing mechanism 8, polishing belt 9, feed polishing structure 10, main slide displacement structure 11, polishing frame 12, polishing vertical plate 13, polishing fixed plate 14, driving wheel driver 15, polishing driven wheel 16, belt guide assembly 17, guide frame 18, guide pulley 19, first adjusting mechanism 20, supporting vertical plate 21, hinge 22, driven wheel positioning plate 23, mounting seat 24, adjustment driver 25, second adjustment The terms such as the joint mechanism 26, the adjusting slide 27, the locking bolt 28, the locking screw hole 29, the feed slide rail 30, the feed slider 31, the feed drive assembly 32, the feed driver 33, the drive connecting plate 34, the shift slide 35, the shift slide rail 36, the shift slider 37, the shift drive assembly 38, the shift drive screw 39, the screw nut 40, the screw positioning seat 41, the screw driver 42, etc. are used only to more conveniently describe and explain the essence of the present utility model; interpreting them as any additional restrictions is contrary to the spirit of the present utility model.

Claims

1. A cam grinder, comprising a machine bed (1) and a workbench (2) arranged on the machine bed (1) and distributed along the length direction of the machine bed (1), a headstock (3) and a tailstock (4) are respectively arranged on both sides of the workbench (2), a workpiece (5) is fixed between the headstock (3) and the tailstock (4), a grinding wheel grinding mechanism (6) capable of performing feed grinding to complete the cam profile surface of the workpiece (5) is arranged on the machine bed (1), characterized in that: The grinding wheel grinding mechanism (6) is slidably connected to the machine tool bed (1) through a main slide (7) at the bottom end; a cam polishing mechanism (8) is also provided on the main slide (7); the cam polishing mechanism (8) includes a polishing belt (9); a feed polishing structure (10) is provided between the main slide (7) and the cam polishing mechanism (8) and is capable of shifting the polishing belt (9) in a direction perpendicular to the axial direction of the worktable (2) to achieve feed polishing; and a main slide displacement structure (11) is also provided between the main slide (7) and the machine tool bed (1).

2. The cam grinder according to claim 1, characterized in that: The cam polishing mechanism (8) comprises a polishing frame (12) arranged on the main slide plate (7), the polishing frame (12) comprises a polishing vertical plate (13) and a polishing fixed plate (14) arranged at the bottom end of the polishing vertical plate (13), a polishing active wheel is arranged on the outer side wall of the polishing vertical plate (13), a moving wheel driver (15) is arranged on the polishing fixed plate (14), the output end of the moving wheel driver (15) is connected to the polishing active wheel, a polishing driven wheel (16) is arranged at the upper end of the polishing vertical plate (13), and the polishing A sanding belt guide assembly (17) is also provided on the vertical plate (13), and the sanding belt guide assembly (17) comprises a vertically arranged guide frame (18), and guide pulleys (19) are respectively provided at both ends of the guide frame (18). The polishing sanding belt (9) is closed and wound around the polishing driving wheel, the polishing driven wheel (16) and the guide pulley (19), and a first adjustment mechanism (20) capable of adjusting the vertical height of the polishing driven wheel (16) to adjust the expansion degree of the polishing sanding belt (9) is provided between the polishing driven wheel (16) and the polishing vertical plate (13).

3. The cam grinder according to claim 2, characterized in that: The first adjustment mechanism (20) comprises a support vertical plate (21) arranged on the inner side wall of the polishing vertical plate (13); the upper end of the support vertical plate (21) is hingedly connected to a driven wheel positioning plate (23) through a hinge (22); the outer side wall of the driven wheel positioning plate (23) is provided with the above-mentioned polishing driven wheel (16); the polishing vertical plate (13) is provided with a mounting seat (24); the mounting seat (24) is provided with an adjustment driver (25); the output end of the adjustment driver (25) is connected to the upper end of the driven wheel positioning plate (23).

4. The cam grinder according to claim 3, characterized in that: A second adjustment mechanism (26) is provided between the guide frame (18) and the mounting seat (24), which can adjust the horizontal distance between the guide frame (18) and the mounting seat (24) to adjust the expansion degree of the polishing belt (9).

5. The cam grinder according to claim 4, characterized in that: The second adjustment mechanism (26) comprises an adjustment slide plate (27) horizontally arranged at the middle end of the guide frame (18); an adjustment slide groove slidably matched with the adjustment slide plate (27) is arranged in the mounting seat (24); a locking bolt (28) is passed through the mounting seat (24); and a plurality of locking screw holes (29) are evenly distributed on the adjustment slide plate (27) along the length direction of the adjustment slide plate (27) and matched with the locking bolt (28).

6. The cam grinder according to claim 2, characterized in that: The feed polishing structure (10) comprises two feed rails (30) arranged on the main slide (7) and distributed in a direction perpendicular to the axial direction of the workbench (2); a feed slider (31) is provided at the bottom end of the polishing fixed plate (14) and is slidably matched with the feed rails (30); and a feed drive assembly (32) is also provided on the main slide (7).

7. The cam grinder according to claim 6, characterized in that: The feed drive assembly (32) includes a feed driver (33) arranged on the main slide (7), the output end of the feed driver (33) is arranged in a direction perpendicular to the axial direction of the workbench (2), and the polishing fixing plate (14) is provided with a drive connecting plate (34) on the side close to the workbench (2), and the drive connecting plate (34) is connected to the output end of the feed driver (33).

8. The cam grinder according to any one of claims 1 to 7, characterized in that: The main slide shifting structure (11) comprises two shift slides (35) arranged on the machine tool bed (1) and distributed along the axial direction of the worktable (2); the shift slides (35) are provided with shift rails (36) distributed along the length direction of the shift slides (35); the bottom end of the main slide (7) is provided with a shift slider (37) that slides with the shift rails (36); and a shift driving assembly (38) is provided between the machine tool bed (1) and the main slide (7).

9. The cam grinder according to claim 8, characterized in that: The shift drive assembly (38) comprises a shift drive screw (39) arranged on the machine tool bed (1) between the two shift slides (35); the shift drive screw (39) is arranged along the axial direction of the workbench (2); the screw nut (40) of the shift drive screw (39) is connected to the bottom end of the main slide (7); the two ends of the shift drive screw (39) are respectively fixed by screw positioning seats (41); a screw driver (42) is provided on the machine tool bed (1); the output end of the screw driver (42) is connected to the shift drive screw (39).

10. The cam grinder according to claim 3, characterized in that: The lower fixed end of the adjusting driver (25) is hingedly connected to the mounting seat (24).

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