Tool for milling key groove in shaft

Abstract

The utility model provides a shaft milling key groove tool which comprises a bottom plate, a movable plate is arranged on the bottom plate, clamping assemblies are arranged on the bottom plate and the movable plate respectively, and when the movable plate moves, the two clamping assemblies get close to each other or get away from each other; a limiting plate is arranged on the bottom plate, a plurality of limiting grooves are formed in the limiting plate, a limiting rod is arranged on the movable plate, an adapter block is arranged at one end of the limiting rod and provided with a guide groove, the length direction of the guide groove is not parallel to the moving direction of the movable plate, an operating rod is further arranged on the movable plate, and a connecting pin matched with the guide groove is arranged at one end of the operating rod. When the operating rod moves on the movable plate, the switching block is driven to get close to the limiting plate, so that the limiting rod extends into one limiting groove or the switching block is driven to get away from the limiting plate. The utility model solves the technical problems that the existing clamp cannot be matched with shaft parts with different lengths and is poor in universality, and has the technical effects that workpieces with different lengths can be clamped, and the machining requirements of the shaft parts with different lengths are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field especially relates to a shaft keyway milling tool. BACKGROUND

[0002] In the process of shaft parts processing, it is usually necessary to mill keyway on the surface of workpiece.

[0003] The utility model discloses a common lathe milling shaft outer keyway anchor clamps, including two base and base plate, two base fixed on the top of base plate, the upper end of two base all are connected with V type block, the inside of V type block is provided with dovetail groove, dovetail groove is fixed with workpiece body through the gasket of bottom end, and the top of workpiece body is provided with the pressing block, the pressing block is installed with two stud bolts through the two second screw holes of inside setting, and the nut rotationally connected on the outer wall of stud bolt meets the upper surface of pressing block, and the stud bolt is fixedly connected with V type block and base through the thread plate respectively. The above-mentioned anchor clamps utilize V type block and pressing block cooperation to guarantee four constraints of shaft, four stud bolts realize the clamping of shaft, guarantee the stability of shaft in the process of milling.

[0004] The common lathe milling shaft outer keyway anchor clamps in the above-mentioned utility model patent are provided with two base plates on the base plate, and V type block and pressing block are arranged on the base plate respectively, two ends of workpiece are placed in two V type blocks respectively, and workpiece is pressed tightly by pressing block, so that workpiece can be clamped and fixed, since two base plates are fixed on the top of base plate respectively, so the spacing between two base plates is fixed and cannot be adjusted according to the length of workpiece, which leads to the fact that the anchor clamps cannot be adapted to shaft parts of different lengths, and the commonality is poor. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the utility model provides a shaft keyway milling tool, which solves the problems of the prior art that the anchor clamps cannot be adapted to shaft parts of different lengths and poor commonality.

[0006] According to the embodiment of the utility model, a kind of shaft milling keyway tool, including bottom plate and being equipped with movable movable plate on bottom plate, bottom plate and movable plate are equipped with clamping assembly respectively, when movable plate moves, two clamping assemblies are close to each other or away from each other, clamping assembly includes the seat with V-shaped groove, vertical threaded rod is equipped on seat, movable pressing block and threaded sleeve matched with threaded rod are equipped on threaded rod, pressing block is located above V-shaped groove and threaded sleeve is abutted with the side of pressing block away from V-shaped groove;Limiting plate is also equipped on bottom plate, multiple limiting grooves are equipped on limiting plate along the moving direction of movable plate, movable limiting rod is equipped on movable plate, the moving direction of limiting rod is perpendicular to the moving direction of movable plate, the end of limiting rod away from limiting plate is equipped with adapter block and adapter block has guide slot, the length direction of guide slot is not parallel to the moving direction of movable plate, movable operating rod is also equipped on movable plate and the moving direction of operating rod is consistent with the moving direction of movable plate, one end of operating rod is equipped with connecting pin matched with guide slot, operating rod is moved on movable plate, drives adapter block to be close to limiting plate to make limiting rod extend into one of limiting grooves or drives adapter block to be away from limiting plate.

[0007] Further, the threaded rod is further sleeved with a driving spring, the driving spring is abutted with the side of the pressing block away from the threaded sleeve.

[0008] Further, a long circular hole is provided on the pressing block for the threaded rod to pass through, and the length direction of the long circular hole is consistent with the length direction of the pressing block.

[0009] Further, a protrusion is provided on the pressing block, a cam is provided on the threaded sleeve and abuts against the protrusion, and the cam pushes the pressing block to move towards the V-shaped groove when the threaded sleeve rotates.

[0010] Further, a handle is provided on the threaded sleeve, and the handle extends away from the cam.

[0011] Further, a sliding groove is further provided on the seat, and a movable guide rod is provided in the sliding groove, the length direction of the sliding groove is consistent with the length direction of the long circular hole, a through hole is provided on the seat for the guide rod to pass through, and the through hole is arranged in a spaced manner with the long circular hole.

[0012] Further, a tension spring is further provided on the seat, and the two ends of the tension spring in the extension direction are matched with the seat and the guide rod respectively, and the tension spring drives the guide rod to move away from the V-shaped groove.

[0013] Further, the movable plate comprises detachably connected upper top plate and lower cover plate, the clamping assembly is arranged on the upper top plate, the upper top plate and the lower cover plate enclose a cavity, a first guide hole and a second guide hole, the first guide hole and the second guide hole are communicated with the cavity respectively, and the axial direction of the first guide hole is perpendicular to the second guide hole, the limiting rod is movably arranged in the first guide hole, and the adapter block is located in the cavity, the operating rod is movably arranged in the second guide hole, and the end of the operating rod away from the adapter block extends out of the second guide hole.

[0014] Further, the first guide hole is provided with a limiting spring abutting against the limiting rod, and the limiting spring drives the end of the limiting rod to extend into one of the limiting grooves.

[0015] Further, the bottom plate is provided with a dovetail groove, the length direction of the dovetail groove is consistent with the moving direction of the movable plate, and the lower cover plate is provided with a clamping block matched with the dovetail groove.

[0016] Compared with the prior art, the utility model has the beneficial effects that: the clamping assembly arranged on the bottom plate and the movable plate is used for clamping the workpiece to be machined, the two ends of the workpiece are respectively placed in the V-shaped grooves on the two seat bodies, and the workpiece is clamped by rotating the threaded sleeve to make the pressing block press the workpiece tightly, and when clamping workpieces of different lengths, the adapter block is driven away from the limiting plate by moving the operating rod to make the limiting rod exit the limiting groove, at this time, the movable plate can be moved on the bottom plate to adjust the distance between the two clamping assemblies to adapt to the length of the workpiece, and after adjusting in place, the operating rod is moved to drive the adapter block to approach the limiting plate to make the limiting rod enter the corresponding limiting groove, so that the position of the movable plate on the base is locked, preventing the movable plate from moving on the base during machining, which solves the technical problems that the existing clamp cannot adapt to shaft parts of different lengths and has poor universality, generates the technical effect that workpieces of various lengths can be clamped to meet the machining requirements of shaft parts of different lengths, and is simple to operate and convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of the shaft keyway milling tool of an embodiment of the utility model;

[0018] Figure 2 It is a structure schematic view of the shaft keyway milling tool of an embodiment of the utility model after clamping a workpiece;

[0019] Figure 3 It is a partial explosion view of part of the structure of the shaft keyway milling tool of an embodiment of the utility model;

[0020] Figure 4The structure diagram of the clamping assembly in the shaft keyway milling tool of the embodiment of the present utility model;

[0021] Figure 5 The sectional view of the clamping assembly in the shaft keyway milling tool of the embodiment of the present utility model.

[0022] In the above drawings: 100, bottom plate; 101, limiting plate; 102, limiting groove; 103, dovetail groove; 200, movable plate; 201, limiting rod; 202, adapter block; 203, guide groove; 204, operating rod; 205, connecting pin; 206, upper top plate; 207, lower cover plate; 208, cavity; 209, limiting spring; 210, clamping block; 300, clamping assembly; 301, seat body; 302, V-shaped groove; 303, threaded rod; 304, pressing block; 305, threaded sleeve; 306, driving spring; 307, long circular hole; 308, protruding block; 309, cam; 310, handle; 311, sliding groove; 312, guide rod; 313, tension spring; 400, workpiece. DETAILED DESCRIPTION

[0023] The technical solutions in the present utility model will be further described below with reference to the drawings and embodiments.

[0024] As Figures 1 to 5 shown, the embodiment of the present utility model proposes a shaft keyway milling tool for clamping the workpiece 400 in the process of machining shaft parts.

[0025] Please refer to Figure 1 , Figure 2 and Figure 3The shaft milling and keyway tool includes a base plate 100, and a movable movable plate 200 is arranged on the base plate 100, and clamping assemblies 300 are arranged on the base plate 100 and the movable plate 200 respectively, and the two clamping assemblies 300 are close to or away from each other when the movable plate 200 moves. The clamping assembly 300 includes a seat body 301 with a V-shaped groove 302, a vertical threaded rod 303 is arranged on the seat body 301, a movable pressing block 304 and a threaded sleeve 305 matched with the threaded rod 303 are arranged on the threaded rod 303, the pressing block 304 is located above the V-shaped groove 302, and the threaded sleeve 305 is in abutment with one side of the pressing block 304 away from the V-shaped groove 302, and the pressing block 304 can be pressed tightly on the seat body 301 by rotating the threaded sleeve 305 to clamp the workpiece 400 placed in the V-shaped groove 302. The base plate 100 is further provided with a limiting plate 101, a plurality of limiting grooves 102 are arranged on the limiting plate 101 in the moving direction of the movable plate 200, a movable limiting rod 201 is arranged on the movable plate 200, the moving direction of the limiting rod 201 is perpendicular to the moving direction of the movable plate 200, an adapter block 202 is arranged on one end of the limiting rod 201 away from the limiting plate 101, and the adapter block 202 has a guide groove 203, the length direction of the guide groove 203 is not parallel to the moving direction of the movable plate 200, a movable operating rod 204 is further arranged on the movable plate 200, and the moving direction of the operating rod 204 is perpendicular to the moving direction of the limiting rod 201, one end of the operating rod 204 is provided with a connecting pin 205 matched with the guide groove 203, when the operating rod 204 moves on the movable plate 200, the adapter block 202 is driven to approach the limiting plate 101 to make the limiting rod 201 extend into one of the limiting grooves 102 or to drive the adapter block 202 to move away from the limiting plate 101, and after the limiting rod 201 enters one of the limiting grooves 102, the position of the movable plate 200 on the base plate 100 is locked, so that the movable plate 200 cannot move on the base plate, and when the adapter block 202 moves away from the limiting plate 101, the limiting rod 201 exits the limiting groove 102, so that the movable plate 200 is unlocked and the distance between the two clamping assemblies 300 can be adjusted by moving the movable plate 200.

[0026] Specifically, the operation steps of clamping the workpiece 400 by the shaft keyway milling tool are as follows: first, the two ends of the workpiece 400 to be machined are respectively placed in the V-shaped grooves 302 on the two seat bodies 301, then the pressing block 304 is moved above the workpiece 400, and the threaded sleeve 305 is rotated to press the workpiece 400 tightly on the seat body 301 by the pressing block 304, so that the workpiece 400 is clamped; when the workpiece 400 machined is needed to be taken off, the threaded sleeve 305 is reversely rotated and the pressing block 304 is moved away from the workpiece 400, so that the workpiece 400 can be taken out of the V-shaped groove 302. When different lengths of workpieces 400 need to be clamped, first, the operating rod 204 is operated to move the connecting pin 205 to slide in the guide groove 203 and drive the adapter block 202 to move away from the limiting plate 101, so that the limiting rod 201 is driven by the adapter block 202 to exit the limiting groove 102, at this time, the movable plate 200 can be moved on the base plate 100 to adjust the distance between the two clamping assemblies 300 to adapt to the length of the workpiece 400, and after adjustment, the operating rod 204 is operated again to reversely move the connecting pin 205 in the guide groove 203 and drive the adapter block 202 to move close to the limiting plate 101, at this time, the limiting rod 201 is driven by the adapter block 202 to enter the corresponding limiting groove 102, so that the position of the movable plate 200 on the base is locked again. The shaft keyway milling tool can clamp workpieces 400 of various lengths, meet the machining needs of shaft parts of different lengths, and is simple to operate and convenient to use.

[0027] As Figure 4 shown, the threaded rod 303 is further sleeved with a driving spring 306, and the driving spring 306 is in abutment with one side of the pressing block 304 away from the threaded sleeve 305. By arranging the driving spring 306 in abutment with the pressing block 304 on the threaded rod 303, when the threaded sleeve 305 is rotated to press the workpiece 400 by the pressing block 304, the driving spring 306 is further compressed, and when the workpiece 400 is taken off after the workpiece 400 is machined, the driving spring 306 gradually recovers to its original length and pushes the pressing block 304 away from the workpiece 400 with the rotation of the threaded sleeve 305, so that the clamping of the workpiece 400 is quickly released and the workpiece 400 is conveniently taken off.

[0028] Please refer to Figure 1 , Figure 4 and Figure 5The long circular hole 307 is arranged on the pressing block 304 for the threaded rod 303 to pass through, and the length direction of the long circular hole 307 is consistent with the length direction of the pressing block 304. The long circular hole 307 is arranged on the pressing block 304 for the threaded rod 303 to pass through, so that the pressing block 304 can move along the length direction of the pressing block 304, thereby moving the pressing block 304 above the workpiece 400 placed in the V-shaped groove 302, ensuring that the pressing block 304 is in stable contact with the workpiece 400, and after the workpiece 400 is processed, the pressing block 304 can be moved away from the workpiece 400, so as to avoid that the pressing block 304 blocks the workpiece 400 from exiting the V-shaped groove 302.

[0029] In detail, the pressing block 304 is provided with a protrusion 308, the threaded sleeve 305 is provided with a cam 309 abutting against the protrusion 308, and the cam 309 pushes the pressing block 304 to move towards the V-shaped groove 302 when the threaded sleeve 305 rotates. When the threaded sleeve 305 is rotated to press the pressing block 304 tightly on the workpiece 400, the cam 309 rotates synchronously with the threaded sleeve 305 and pushes the pressing block 304 to move above the V-shaped groove 302 through the abutment between the cam 309 and the protrusion 308, so as to ensure that the pressing block 304 moves above the workpiece 400 during clamping of the workpiece 400, and prevent the pressing block 304 from moving unexpectedly and affecting the stability of the workpiece 400 on the shaft milling keyway tool.

[0030] As shown in Figure 4 , the threaded sleeve 305 is provided with a handle 310 extending away from the cam 309. The handle 310 can be operated to conveniently rotate the threaded sleeve 305, and the threaded sleeve 305 can be quickly rotated to a position for clamping or releasing the workpiece 400, thereby facilitating operation of the shaft milling keyway tool.

[0031] Please refer to Figure 2 , Figure 4 and Figure 5The seat body 301 is further provided with a sliding groove 311 and a movable guide rod 312 is arranged in the sliding groove 311, the length direction of the sliding groove 311 is consistent with the length direction of the long circular hole 307, the seat body 301 is provided with a through hole for the guide rod 312 to pass through and the through hole is arranged in a spaced manner with the long circular hole 307. The guide rod 312 arranged in the sliding groove 311 is used for limiting the moving direction of the pressing block 304, when the pressing block 304 moves, the guide rod 312 moves in the sliding groove 311 along the length direction of the sliding groove 311, so as to avoid that the pressing block 304 deviates from the preset direction and causes the pressing block 304 to be misaligned with the workpiece 400 in the V-shaped groove 302, and when the pressing block 304 moves close to or away from the workpiece 400 in the V-shaped groove 302 in the vertical direction, the pressing block 304 slides on the guide rod 312, so as to prevent the pressing block 304 from being inclined, and the reliability of the shaft milling key groove tool is improved.

[0032] In the embodiment, the seat body 301 is further provided with a tension spring 313 and the two ends of the tension spring 313 in the extension direction are respectively matched with the seat body 301 and the guide rod 312, the tension spring 313 drives the guide rod 312 to move away from the V-shaped groove 302. When the pressing block 304 moves close to the V-shaped groove 302, the guide rod 312 moves synchronously with the pressing block 304 and the tension spring 313 is elongated, and when the workpiece 400 is released by rotating the threaded sleeve 305, the tension spring 313 restores to the original length and pulls the guide rod 312 and the pressing block 304 away from the V-shaped groove 302, so that the pressing block 304 automatically moves away from the workpiece 400 placed in the V-shaped groove 302, thereby the workpiece 400 processed is quickly taken off from the shaft milling key groove tool.

[0033] As Figure 3As shown, the movable plate 200 comprises a detachably connected upper top plate 206 and a lower cover plate 207, the clamping assembly 300 is arranged on the upper top plate 206, the upper top plate 206 and the lower cover plate 207 enclose a cavity 208, a first guide hole and a second guide hole, the first guide hole and the second guide hole are respectively communicated with the cavity 208 and the axial direction of the first guide hole is perpendicular to the second guide hole, the limiting rod 201 is movably arranged in the first guide hole and the adapter block 202 is located in the cavity 208, the operating rod 204 is movably arranged in the second guide hole and the end of the operating rod 204 away from the adapter block 202 extends out of the second guide hole. The movable plate 200 contains the limiting rod 201 and the operating rod 204 through the cavity 208, the first guide hole and the second guide hole enclosed by the upper top plate 206 and the lower cover plate 207, and guides the movement of the limiting rod 201 through the first guide hole and the movement of the operating rod 204 through the second guide hole, so as to ensure that the limiting rod 201 moves smoothly when the operating rod 204 is operated to lock and unlock the movable plate 200, and the end of the operating rod 204 extends out of the second guide hole, so that when the operating rod 204 is pushed into the second guide hole, the limiting rod 201 moves to the position of unlocking the movable plate 200, and when the operating rod 204 is pulled out of the second guide hole, the limiting rod 201 moves to the position of locking the movable plate 200, which facilitates operation and observation of whether the movable plate 200 is locked.

[0034] Specifically, the first guide hole is provided with a limiting spring 209 abutting against the limiting rod 201, and the limiting spring 209 drives the end of the limiting rod 201 to extend into one of the limiting grooves 102. The elastic force provided by the limiting spring 209 keeps the end of the limiting rod 201 in the position of extending into the limiting groove 102, so that the movable plate 200 is kept in the locked state and prevents the movable plate 200 from moving accidentally after being unlocked during processing, and when the operating rod 204 is moved to unlock the movable plate 200 and the limiting rod 201 exits the limiting groove 102, the limiting spring 209 is further compressed. Releasing the operating rod 204 after adjusting the movable plate 200 to the position can make the limiting pin extend into the limiting groove 102 under the pushing of the elastic force provided by the limiting spring 209, so as to automatically lock the movable plate 200, and at the same time, the operating rod 204 is popped out of the second guide hole under the action of the limiting spring 209, which facilitates subsequent unlocking operation of the operating rod 204.

[0035] Please refer to Figure 1 and Figure 3The bottom plate 100 is provided with dovetail grooves 103, the length direction of the dovetail grooves 103 is consistent with the moving direction of the movable plate 200, and the lower cover plate 207 is provided with clamping blocks 210 matched with the dovetail grooves 103. The movable plate 200 is installed on the bottom plate 100 through the cooperation of the clamping blocks 210 and the dovetail grooves 103, the cooperation of the movable plate 200 and the bottom plate 100 is ensured to be stable, and the movable plate 200 is guided to move on the base through the dovetail grooves 103, so that the movable plate 200 is prevented from deviating from the preset direction when moving, and the structural stability of the shaft milling key groove tool is enhanced.

[0036] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A tool for milling a keyway in a shaft, the tool comprising: The bottom plate is provided with a movable movable plate, the bottom plate and the movable plate are respectively provided with clamping assemblies, the two clamping assemblies are close to or away from each other when the movable plate moves, the clamping assembly comprises a seat body with a V-shaped groove, a vertical threaded rod is arranged on the seat body, a movable pressing block and a threaded sleeve matched with the threaded rod are arranged on the threaded rod, the pressing block is located above the V-shaped groove, and one side of the threaded sleeve away from the pressing block abuts against the V-shaped groove; a limiting plate is further arranged on the bottom plate, a plurality of limiting grooves are arranged on the limiting plate and are spaced apart along the moving direction of the movable plate, a movable limiting rod is arranged on the movable plate, the moving direction of the limiting rod is perpendicular to the moving direction of the movable plate, one end of the limiting rod away from the limiting plate is provided with an adapter block, and the adapter block is provided with a guide groove; the length direction of the guide groove is not parallel to the moving direction of the movable plate, a movable operating rod is further arranged on the movable plate, the moving direction of the operating rod is consistent with the moving direction of the movable plate, one end of the operating rod is provided with a connecting pin matched with the guide groove, and the operating rod drives the adapter block to move close to the limiting plate when moving on the movable plate, so that the limiting rod is inserted into one of the limiting grooves or drives the adapter block to move away from the limiting plate.

2. A tool for milling a keyway in a shaft as defined in claim 1, wherein: A driving spring is further sleeved on the threaded rod, and the driving spring abuts against one side of the pressing block away from the threaded sleeve.

3. The tool of claim 1 wherein: A long circular hole is arranged on the pressing block and passes through the threaded rod, and the length direction of the long circular hole is consistent with the length direction of the pressing block.

4. A tool as claimed in claim 3, wherein: A protrusion is arranged on the pressing block, a cam matched with the protrusion is arranged on the threaded sleeve, and the cam pushes the pressing block to move in the direction close to the V-shaped groove when the threaded sleeve rotates.

5. A tool as claimed in claim 4, wherein: A handle is arranged on the threaded sleeve and extends away from the cam.

6. A tool as claimed in claim 3, wherein: A sliding groove is further arranged on the seat body, and a movable guide rod is arranged in the sliding groove, the length direction of the sliding groove is consistent with the length direction of the long circular hole, a through hole is arranged on the seat body and passes through the guide rod, and the through hole is arranged in the long circular hole.

7. A tool as claimed in claim 6, wherein: A tension spring is further arranged on the seat body, and the two ends of the tension spring in the extension direction are matched with the seat body and the guide rod respectively, and the tension spring drives the guide rod to move away from the V-shaped groove.

8. A tool as claimed in claim 1, wherein: The movable plate comprises a detachably connected upper top plate and a lower cover plate, the clamping assembly is arranged on the upper top plate, the upper top plate and the lower cover plate surround a cavity, a first guide hole and a second guide hole, the first guide hole and the second guide hole are respectively communicated with the cavity, the axial direction of the first guide hole is perpendicular to the second guide hole, the limiting rod is movably arranged in the first guide hole, the adapter block is located in the cavity, the operating rod is movably arranged in the second guide hole, and one end of the operating rod away from the adapter block extends out of the second guide hole.

9. A tool as claimed in claim 8, wherein: A limiting spring matched with the limiting rod is arranged in the first guide hole, and the limiting spring drives the end of the limiting rod to extend into one of the limiting grooves.

10. The tool of claim 8 wherein: A dovetail groove is arranged on the bottom plate, the length direction of the dovetail groove is consistent with the moving direction of the movable plate, and a clamping block matched with the dovetail groove is arranged on the lower cover plate.

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