Hobbing cutter edge grinding clamp with adjustable position

Abstract

The utility model discloses a position-adjustable hobbing cutter grinding fixture, which relates to the technical field of hobbing cutter grinding processing and comprises a base, a translation guide rail is fixedly connected to the center of the upper surface of the base, a support plate is movably connected to the upper surface of the translation guide rail, and a clamping mechanism is fixedly connected to the upper edge of the support plate close to one end. The other end of the upper surface of the supporting plate is fixedly connected with a jacking mechanism, one side of the top end of the clamping mechanism is fixedly connected with a set of clamping boxes, a hobbing cutter is movably connected between the clamping mechanism and the jacking mechanism, one side of the upper surface of the base is fixedly provided with a cutter base, and the upper surface of the cutter base is movably connected with a cutter rest; and one side of the tool rest is rotationally connected with a blade grinding tool, one end of the upper surface of the base is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a guide screw rod, the guide screw rod penetrates through the top of the supporting plate, and translation and rotation of the hobbing cutter during machining are achieved through cooperation of a translation mechanism, a clamping mechanism and a jacking mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of hob grinding, in particular to a hob grinding fixture with adjustable position. Background Art

[0002] Hobs are an important part of gear processing. Semi-finishing processes require hobbing to remove a large amount of material, which is a heavy cutting tool. Therefore, most gear processing companies use hobs made of special tool materials to improve hobbing efficiency. Hobs made of special materials are expensive. In order to improve the utilization rate of hob materials and reduce production costs, when the cutting edge of the hob is worn to a certain extent, it is necessary to use a special machine tool to grind the damaged part to make full use of the hob material.

[0003] The dimensional accuracy of the hob after grinding is directly related to the dimensional accuracy of the processed gear. Through experimental verification and analysis, it is found that the main problem of substandard grinding quality occurs in the clamping link of the hob. Before grinding the hob, the hob and the special hydraulic tool rod need to be assembled together. The traditional assembly method is that the operator places the hob on a plane, uses a nut to limit the hob to a specific position on the tool rod, and then screws one end of the hydraulic tool rod to the set torque position. Due to the lack of a special assembly fixture to assist the assembly process, the matching accuracy of the hob and the special hydraulic tool rod is out of tolerance during assembly, resulting in the dimensional accuracy of the hob after grinding failing to meet the design requirements of the hob, and the horizontal and circumferential position of the fixture cannot be quickly adjusted. The hob to be ground needs to be clamped repeatedly, which makes the grinding work inefficient. Utility Model Content

[0004] The utility model aims to make up for the deficiencies of the prior art and provides a position-adjustable hob sharpening fixture.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a position-adjustable hob sharpening fixture, comprising a base, a translation guide rail fixedly connected to the center position of the upper surface of the base, the upper surface of the translation guide rail movably connected to a support plate, a clamping mechanism fixedly connected to the upper side of the support plate near one end, a top holding mechanism fixedly connected to the other end of the upper surface of the support plate, an assembly clamping box fixedly connected to the top side of the clamping mechanism, a hob cutter movably connected between the clamping mechanism and the top holding mechanism, a tool base fixedly installed on one side of the upper surface of the base, a tool holder movably connected to the upper surface of the tool base, a sharpening knife rotatably connected to one side of the tool holder, a driving motor fixedly connected to one end of the upper surface of the base, a guide screw fixedly connected to the output end of the driving motor, and the guide screw running through the top of the support plate.

[0006] The above-mentioned clamping mechanism includes a frame one, a rotating servo is fixedly installed inside the top of the frame one, a rotating shaft is fixedly connected to the output end of the rotating servo, and the outer wall of the rotating shaft is rotatably connected to one side of the frame one through a bearing, and the rotation angle of the rotating shaft can be accurately controlled by the servo.

[0007] The above-mentioned clamping box fixedly connected at one end of the rotating shaft includes a shell, and the shell is rotatably connected to bevel gear one through a bearing, and bevel gear one is meshed with bevel gear two on one side, and bevel gear two is coaxially fixedly connected to bevel gear three, and bevel gear three is meshed with bevel gear four on one side, and bevel gear four is coaxially fixedly connected to a lifting screw rod, and the outer wall of the lifting screw rod is movably sleeved with a screw rod nut block, and a caliper is fixedly connected to one side of the screw rod nut block, and guide grooves are provided on both side walls of the caliper, and a lifting guide rail is fixedly connected to the inner wall of one side of the shell, and the guide groove is slidably connected to the shell through the lifting guide rail, and the bevel gear is coaxially fixedly connected with an adjusting nut, and the adjusting nut runs through the upper surface of the shell, and the shaft of the gear hobbing cutter is clamped between the calipers, and the rotating motion of the adjusting nut is converted into the lifting motion of the caliper through the transmission of the gear train structure, so as to realize the clamping and fastening of gear hobbing cutters of different sizes.

[0008] As mentioned above, the supporting mechanism includes a frame two, the top of the frame two is fixedly connected to an air pump, the frame two is fixedly connected to a side close to the gear hobbing cutter with a telescopic cylinder, the top of the telescopic cylinder is fixedly connected to a conical top block, the conical top block is clamped with a hole at one end of the gear hobbing cutter, the telescopic cylinder is pneumatically connected to the output end of the air pump through an air pipe, and the gear hobbing cutter is supported by the telescopic cylinder, which further ensures the tightness and precision of the gear hobbing cutter clamping.

[0009] As mentioned above, a guide block is fixedly connected to the bottom of the support plate, and the guide block is sleeved on the outer wall of the guide screw. A translation guide groove is opened on the lower surface of the support plate. By arranging a translation mechanism at the bottom, the translation of the entire clamping mechanism can be controlled, making the gear hobbing cutter grinding process more flexible and convenient without the need to repeatedly clamp the workpiece.

[0010] As mentioned above, the guide screw is fixedly connected to the upper surface of the translation guide rail, and the outer wall of the translation guide rail is movably sleeved with a translation guide groove.

[0011] An arc-shaped groove is provided on the upper surface of the tool base, and a slider is fixedly connected to the lower surface of the tool holder. The tool holder is slidably connected to the inside of the arc-shaped groove via the slider, and the position of the sharpening knife can be appropriately adjusted, which is suitable for sharpening of gear hobbing cutters with different tooth shapes.

[0012] Compared with the prior art, the position-adjustable hob sharpening fixture has the following beneficial effects:

[0013] 1. The utility model arranges a translation guide rail on the base, arranges a lead screw on the translation guide rail, drives the lead screw to rotate by rotating the driving motor, and the lead screw is fixedly connected to the support plate through a translation guide block. A translation guide groove is opened at the bottom of the support plate, which is connected and driven by the lead screw. The guide groove of the support plate slides along the translation guide rail, so that the clamping mechanism and the top holding mechanism on the support plate clamp the gear hobbing cutter for translation, which is convenient for sharpening processing.

[0014] 2. The utility model arranges a clamping mechanism and a holding mechanism on a support plate, wherein the clamping mechanism is driven by a gear system composed of a plurality of bevel gears, and an adjusting nut on the top of the clamping box is adjusted to drive the gear system to rotate, and finally the rotation is converted into the lifting and lowering of the caliper through the lifting screw, thereby adjusting the distance between a group of calipers, clamping the shaft of the gear hobbing cutter, adjusting the position of the conical top block on the top of the holding mechanism by a telescopic cylinder, and holding and fixing the conical hole at one end of the gear hobbing cutter to achieve clamping and fastening of the gear hobbing cutter, and a servo is arranged inside the clamping mechanism, and the rotation of the clamping box is achieved by a rotating shaft, thereby achieving circumferential rotation adjustment during gear hobbing processing, and avoiding the problem of low grinding efficiency caused by repeated clamping.

[0015] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and study, or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a semi-axonometric cross-sectional view of the clamping box of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the clamping box of the utility model;

[0019] Figure 4 It is a semi-axonometric cross-sectional schematic diagram of the guide mechanism of the utility model;

[0020] Figure 5 It is a cross-sectional schematic diagram of the three-dimensional structure of the utility model.

[0021] In the figure: 1. base; 2. translation guide rail; 3. support plate; 301. guide block; 302. translation guide groove; 4. clamping mechanism; 401. frame one; 402. rotating servo; 403. rotating shaft; 5. holding mechanism; 501. frame two; 502. air pump; 503. telescopic cylinder; 504. conical top block; 6. clamping box; 601. shell; 602. bevel gear one; 603. bevel gear two; 604. bevel gear three; 605. bevel gear four; 606. lifting screw; 607. screw nut block; 608. caliper; 609. guide groove; 610. lifting guide rail; 611. adjusting nut; 7. gear hobbing cutter; 8. tool base; 801. arc groove; 9. tool holder; 10. sharpening knife; 11. driving motor; 12. guide screw. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1-5 As shown, the utility model provides a technical solution: a position-adjustable hob sharpening fixture, comprising a base 1, a translation guide rail 2 is fixedly connected to the center position of the upper surface of the base 1, the upper surface of the translation guide rail 2 is movably connected to a support plate 3, a clamping mechanism 4 is fixedly connected to the upper side of the support plate 3 near one end, a top holding mechanism 5 is fixedly connected to the other end of the upper surface of the support plate 3, an assembly clamping box 6 is fixedly connected to the top side of the clamping mechanism 4, a hob cutter 7 is movably connected between the clamping mechanism 4 and the top holding mechanism 5, a tool base 8 is fixedly installed on one side of the upper surface of the base 1, a tool holder 9 is movably connected to the upper surface of the tool base 8, a sharpening knife 10 is rotatably connected to one side of the tool holder 9, a driving motor 11 is fixedly connected to one end of the upper surface of the base 1, a guide screw 12 is fixedly connected to the output end of the driving motor 11, and the guide screw 12 runs through the top of the support plate 3.

[0024] By utilizing the overall structure of the device, when the gear hobbing cutter 7 is subjected to blade grinding processing, one end of the gear hobbing cutter 7 is placed in the middle of a group of clamping boxes 6 at the top of the clamping mechanism 4, the axis of the gear hobbing cutter 7 is clamped and fixed by adjusting the clamping box 6, and then the supporting mechanism 5 is controlled to support the other end of the gear hobbing cutter 7 against the clamp, and then the clamping box 6 is adjusted to further tighten the gear hobbing cutter 7, and then the blade grinding processing of the gear hobbing cutter 7 is started by controlling the start-up sharpener 10, and the driving motor 11 is controlled to adjust the position of the translation guide rail 2 to realize the translation of the gear hobbing cutter 7, and the rotation angle of the servo is controlled to realize the rotation of the processing angle of the gear hobbing cutter 7, so that the gear hobbing cutter 7 can be clamped once to realize axial and axial all-round processing.

[0025] like Figure 1-3 As shown, the clamping mechanism 4 includes a frame 401, a rotating steering gear 402 is fixedly installed inside the top of the frame 401, a rotating shaft 403 is fixedly connected to the output end of the rotating steering gear 402, the outer wall of the rotating shaft 403 is rotatably connected to the frame 401 through a bearing, and a clamping box 6 fixedly connected to one end of the rotating shaft 403 includes a shell 601, the shell 601 is rotatably connected to a bevel gear 1 602 through a bearing, a bevel gear 2 603 is meshed on one side of the bevel gear 1 602, the bevel gear 2 603 is coaxially fixedly connected to a bevel gear 3 604, and a bevel gear 4 604 is meshed on one side. 5. Bevel gear 4 605 is coaxially fixedly connected with a lifting screw 606. The outer wall of the lifting screw 606 is movably sleeved with a screw nut block 607. A caliper 608 is fixedly connected to one side of the screw nut block 607. Guide grooves 609 are provided on both side walls of the caliper 608. A lifting guide rail 610 is fixedly connected to the inner wall of one side of the shell 601. The guide groove 609 is slidably connected to the shell 601 through the lifting guide rail 610. Bevel gear 1 602 is coaxially fixedly connected with an adjusting nut 611. The adjusting nut 611 passes through the upper surface of the shell 601. The shaft of the gear hobbing cutter 7 is clamped between a set of calipers 608.

[0026] When the operator is clamping the gear hobbing cutter 7, he first places one end of the shaft of the gear hobbing cutter 7 near the caliper 608 of the clamping box 6, and then twists the adjusting nut 611 with a tool. The bevel gear 1 602 rotates with the rotation of the adjusting nut 611, and the bevel gear 2 603 meshing therewith starts to rotate, and the bevel gear 3 604 coaxially fixedly connected to the bevel gear 2 603 starts to rotate, and the bevel gear 4 605 meshing with the bevel gear 3 604 starts to rotate at the same time. Through the transmission of the lifting screw 606 coaxially fixed with the bevel gear 4 605, the screw nut block 607 starts to move up and down, and at the same time, the guide groove 609 on the caliper 608 starts to slide along the lifting guide rail 610, finally realizing the clamping of a pair of calipers 608, controlling the rotation angle of the rotating servo 402, and the rotating angle of the clamping box 6 can be accurately controlled through the rotating shaft 403 fixedly connected to its output end, so as to achieve the continuity and accuracy of the grinding process of the gear hobbing cutter 7.

[0027] like Figure 1-5 As shown, the supporting mechanism 5 includes a frame 501, an air pump 502 is fixedly connected to the top of the frame 501, a telescopic cylinder 503 is fixedly connected to the side of the frame 501 close to the gear hobbing cutter 7, a conical top block 504 is fixedly connected to the top of the telescopic cylinder 503, the conical top block 504 is clamped with the hole at one end of the gear hobbing cutter 7, and the telescopic cylinder 503 is pneumatically connected to the output end of the air pump 502 through an air pipe.

[0028] When the operator clamps the gear hobbing cutter 7 , the operator controls the air pump 502 to extend and retract the telescopic cylinder 503 , so that the conical top block 504 supports the other end of the shaft of the gear hobbing cutter 7 , thereby completing the clamping and fastening of the gear hobbing cutter 7 .

[0029] like Figure 5 As shown, a guide block 301 is fixedly connected to the bottom of the support plate 3, and the guide block 301 is sleeved on the outer wall of the guide screw 12. A translation guide groove 302 is opened on the lower surface of the support plate 3, and the guide screw 12 is fixedly connected to the upper surface of the translation guide rail 2. The outer wall of the translation guide rail 2 is movably sleeved with a translation guide groove 302.

[0030] When the operator is sharpening the gear hobbing cutter 7, he can control the start and rotation direction of the drive motor 11 to drive the guide screw 12 to rotate in different directions, and drive the support plate 3 to translate as a whole through the screw transmission, so as to realize the sharpening of the gear hobbing cutter 7 at different positions.

[0031] like Figure 1 and Figure 5 As shown, an arc-shaped groove 801 is formed on the upper surface of the tool base 8, a slider is fixedly connected to the lower surface of the tool holder 9, and the tool holder 9 is slidably connected to the inside of the arc-shaped groove 801 via the slider.

[0032] Before performing the grinding process of the gear hobbing cutter 7 , the operator can appropriately adjust the position of the tool holder 9 in the arc groove 801 according to the type of gear hobbing, so as to adapt to the grinding process of the gear hobbing cutters 7 with different straight teeth and helical teeth.

[0033] Working principle: Using the overall structure of the device, when grinding the blade of the gear hobbing cutter 7, one end of the gear hobbing cutter 7 is placed in the middle of a group of clamping boxes 6 at the top of the clamping mechanism 4, and the axis of the gear hobbing cutter 7 is clamped and fixed by adjusting the clamping box 6, and then the supporting mechanism 5 is controlled to hold the other end of the gear hobbing cutter 7 against the clamp, and then the clamping box 6 is adjusted to further tighten the gear hobbing cutter 7, and then the blade grinding process of the gear hobbing cutter 7 is started by controlling the start-up sharpening tool 10, and the driving motor 11 is controlled to adjust the position of the translation guide rail 2 to realize the translation of the gear hobbing cutter 7, and the steering gear is controlled to rotate. The angle of rotation of the gear hobbing cutter 7 is controlled to realize the rotation of the gear hobbing cutter 7. The rotation of the processing angle enables the gear hobbing cutter 7 to be clamped once to achieve axial and axial all-round processing; when the operator clamps the gear hobbing cutter 7, first, one end of the gear hobbing cutter 7 shaft is placed near the caliper 608 of the clamping box 6, and then the adjusting nut 611 is twisted by a tool, and the bevel gear 1 602 rotates with the rotation of the adjusting nut 611, and the bevel gear 2 603 meshing with it starts to rotate, and the bevel gear 3 604 coaxially fixedly connected to the bevel gear 2 603 starts to rotate, and the bevel gear 4 605 meshing with the bevel gear 3 604 starts to rotate at the same time, and the bevel gear 4 The screw nut block 607 starts to move up and down, and at the same time, the guide groove 609 on the caliper 608 starts to slide along the lifting guide rail 610, and finally the clamping of a pair of calipers 608 is realized, and the rotation angle of the rotating steering gear 402 is controlled. The rotation angle of the clamping box 6 can be accurately controlled by the rotating shaft 403 fixedly connected to the output end thereof, so as to realize the continuity and accuracy of the grinding process of the gear hobbing cutter 7. When the operator clamps the gear hobbing cutter 7, the telescopic cylinder 503 is extended and retracted by controlling the air pump 502, so that the conical top Block 504 supports the other end of the gear hobbing cutter 7 shaft to complete the clamping and fastening of the gear hobbing cutter 7. When the operator is sharpening the gear hobbing cutter 7, he can control the start and rotation direction of the drive motor 11, thereby driving the guide screw 12 to rotate in different directions, and drive the support plate 3 to translate as a whole through the screw transmission to achieve sharpening processing at different positions of the gear hobbing cutter 7. Before sharpening the gear hobbing cutter 7, the operator can appropriately adjust the position of the tool holder 9 in the arc groove 801 according to the type of gear hobbing, so as to adapt to the sharpening processing of gear hobbing cutters 7 with different straight teeth and helical teeth.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A position-adjustable hob sharpening fixture, comprising a base (1), characterized in that: A translation guide rail (2) is fixedly connected at the center position of the upper surface of the base (1); the upper surface of the translation guide rail (2) is movably connected to a support plate (3); a clamping mechanism (4) is fixedly connected to the upper side of the support plate (3) near one end; a supporting mechanism (5) is fixedly connected to the other end of the upper surface of the support plate (3); an assembly clamping box (6) is fixedly connected to one side of the top of the clamping mechanism (4); a gear hobbing cutter (7) is movably connected between the clamping mechanism (4) and the supporting mechanism (5); a tool base (8) is fixedly installed on one side of the upper surface of the base (1); a tool holder (9) is movably connected to the upper surface of the tool base (8); a sharpening knife (10) is rotatably connected to one side of the tool holder (9); a driving motor (11) is fixedly connected to one end of the upper surface of the base (1); a guide screw (12) is fixedly connected to the output end of the driving motor (11); and the guide screw (12) passes through the top of the support plate (3).

2. The position-adjustable hob sharpening fixture according to claim 1, characterized in that: The clamping mechanism (4) comprises a frame one (401), a rotating steering gear (402) being fixedly installed inside the top of the frame one (401), a rotating shaft (403) being fixedly connected to the output end of the rotating steering gear (402), and an outer wall of the rotating shaft (403) being rotatably connected to one side of the frame one (401) via a bearing.

3. The position-adjustable hob sharpening fixture according to claim 2, characterized in that: The clamping box (6) fixedly connected to one end of the rotating shaft (403) comprises a housing (601), the housing (601) being rotatably connected to a bevel gear 1 (602) via a bearing, a bevel gear 2 (603) being meshed on one side of the bevel gear 1 (602), a bevel gear 3 (604) being coaxially fixedly connected to the bevel gear 2 (603), a bevel gear 4 (605) being meshed on one side of the bevel gear 3 (604), a lifting screw rod (606) being coaxially fixedly connected to the bevel gear 4 (605), and a screw rod nut block (606) being movably sleeved on the outer wall of the lifting screw rod (606). 607), a caliper (608) is fixedly connected to one side of the screw nut block (607), and guide grooves (609) are provided on both side walls of the caliper (608). A lifting guide rail (610) is fixedly connected to the inner wall of one side of the shell (601), and the guide groove (609) is slidably connected to the shell (601) through the lifting guide rail (610). The bevel gear 1 (602) is coaxially fixedly connected to an adjusting nut (611), and the adjusting nut (611) passes through the upper surface of the shell (601). The shaft of the gear hobbing cutter (7) is clamped between the calipers (608).

4. The position-adjustable hob sharpening fixture according to claim 1, characterized in that: The supporting mechanism (5) comprises a frame 2 (501), the top of the frame 2 (501) is fixedly connected to an air pump (502), the frame 2 (501) is fixedly connected to a telescopic cylinder (503) on a side close to the gear hobbing cutter (7), the top of the telescopic cylinder (503) is fixedly connected to a conical top block (504), the conical top block (504) is clamped with a hole at one end of the gear hobbing cutter (7), and the telescopic cylinder (503) is pneumatically connected to an output end of the air pump (502) via an air pipe.

5. The position-adjustable hob sharpening fixture according to claim 1, characterized in that: A guide block (301) is fixedly connected to the bottom of the support plate (3), the guide block (301) is sleeved on the outer wall of the guide screw rod (12), and a translation guide groove (302) is provided on the lower surface of the support plate (3).

6. The position-adjustable hob sharpening fixture according to claim 1, characterized in that: The guide screw rod (12) is fixedly connected to the upper surface of the translation guide rail (2), and the outer wall of the translation guide rail (2) is movably sleeved with a translation guide groove (302).

7. The position-adjustable hob sharpening fixture according to claim 1, characterized in that: The upper surface of the tool base (8) is provided with an arc-shaped groove (801), and the lower surface of the tool holder (9) is fixedly connected with a slider, and the tool holder (9) is slidably connected to the inside of the arc-shaped groove (801) via the slider.

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