CN213702613U

CN213702613U - Fixture for milling machine to process key grooves of shaft parts

Info

Publication number: CN213702613U
Application number: CN202022741634.6U
Authority: CN
Inventors: 何俊; 王韦霞; 李钦生; 崔强; 王晓浩; 徐树牛; 卞要伟; 陶瑞
Original assignee: Anhui Technical College of Mechanical and Electrical Engineering
Current assignee: Harbin Songlinfeng Boiler Equipment Co.,Ltd.
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-07-16
Anticipated expiration: 2030-11-24

Abstract

The utility model belongs to the field of machine tool fixtures, in particular to a fixture for processing key grooves of shaft parts by a milling machine, which comprises a positioning plate; the positioning plate is provided with three sets of part supporters, two sets of clamping devices, a set of fixed central hole positioner and a set of movable central hole positioner; the utility model discloses a position of part eyelidretractor and binding clasp on the locating plate is adjustable, make three sets of part eyelidretractors can support the different positions of axle type part, but the different positions of two sets of binding clasp centre gripping axle type parts, be convenient for support and press from both sides tightly in suitable position department to different axle type parts, utilize solid centre hole locator and activity centre hole locator to press from both sides tight location to the axle type part after supporting, can realize the quick clamping location locking of axle type part, the eyelidretractor, the binding clasp, solid centre hole locator and activity centre hole locator are all swing joint on the locating plate, conveniently adjust the relative position of each subassembly, it is applicable in different axle type parts.

Description

Fixture for milling machine to process key grooves of shaft parts

Technical Field

The invention belongs to the field of machine tool fixtures, and particularly relates to a fixture for machining key grooves of shaft parts by a milling machine.

Background

The milling machine is a machine tool with wide application, and planes, grooves, tooth dividing parts, spiral surfaces and various curved surfaces can be processed on the milling machine; in addition, the device can also be used for processing the surface and the inner hole of the revolving body, cutting off the revolving body, and the like; when the milling machine works, a workpiece is clamped on accessories such as a clamp, the milling cutter rotates to move mainly, and the workpiece can obtain a required processing surface by the aid of the feeding motion of a workbench or a milling head; the milling machine has high productivity due to the multi-edge intermittent cutting; in short, a milling machine is a machine tool that can mill, drill, and bore a workpiece.

The shaft part is milled the keyway operation and is gone on the milling machine mostly, before the keyway operation, need carry out the clamping to axle type part and fix, the anchor clamps that are used for clamping axle type part this moment can be arranged and used the field, current axle type part anchor clamps clamping is more loaded down with trivial details, need the workman to carry out multiple operation to anchor clamps and just can finish the part clamping, also reduced the clamping precision when reducing work efficiency, and current anchor clamps commonality is poor, often a section anchor clamps can only be used for the clamping of a section part, also do not benefit to the administrative work of enterprise to anchor clamps when increasing anchor clamps preparation volume, unsatisfied modern processing to the operation requirement of anchor clamps.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides a clamp for machining key grooves of shaft parts by a milling machine. The clamping device is mainly used for solving the problems that in the prior art, a worker can finish clamping a part only by performing multiple operations on the clamp, the working efficiency is reduced, the clamping precision is reduced, and meanwhile, the clamp in the prior art is poor in universality.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention provides a fixture for processing a key groove of a shaft part by a milling machine, which comprises a positioning plate; the positioning plate is provided with three sets of part supporters, two sets of clamping devices, a set of fixed central hole positioner and a set of movable central hole positioner; the middle parts of the positioning plates are mounted on the three sets of part supporters; the two sets of the clamping devices are respectively arranged at two sides of the three sets of the part supporting devices; the fixed center hole positioner is arranged at one end of the positioning plate; the movable central hole positioner is arranged at the other end of the positioning plate; the top surface of the positioning plate is symmetrically provided with two positioning grooves; two sets of positioning plate guide blocks are symmetrically arranged on the bottom surface of the positioning plate; the cross sections of the positioning groove and the guide block are both arranged to be right-angled trapezoids.

When the device works, two sets of positioning plate guide blocks arranged on the bottom surface of the positioning plate are connected with a milling machine operation platform, two positioning grooves arranged on the positioning plate are utilized to fix three sets of part supporters, two sets of clamping devices, a set of fixed center hole positioner and a set of movable center hole positioner on the positioning plate, the positions of the part supporters and the clamping devices on the positioning plate are adjustable, so that the three sets of part supporters can support different positions of a shaft part, the two sets of clamping devices can clamp different positions of the shaft part, so that different shaft parts can be conveniently supported and clamped at proper positions, the supported shaft part is clamped and positioned by the fixed center hole positioner and the movable center hole positioner, and the shaft part can be quickly clamped, positioned and locked, and the supporters, the clamping devices, the fixed center hole positioners and the movable center hole positioners are movably connected on the positioning plate, the relative position of each subassembly is conveniently adjusted, and applicable in different axle class parts.

Preferably, the part support comprises a first mounting frame, a screw rod, a moving block, a connecting plate, a lifter, a supporting block and a hand wheel; rectangular openings are formed in the bottoms of the two side faces of the first mounting frame; two first mounting rack guide blocks are symmetrically arranged on the bottom surface of the first mounting rack; the cross section of the first mounting rack guide blocks is arranged to be in a right trapezoid shape, and two sets of the first mounting rack guide blocks are in clearance fit with the two positioning grooves formed in the positioning plate; two screw rod mounting holes are symmetrically formed in two ends of the first mounting frame, and screw rods are inserted into the two screw rod mounting holes; the screw rod is connected with the first mounting frame through two sets of bearing seats; the bearing block is fixedly connected with the first mounting frame through a screw; a set of left-handed threads and a set of right-handed threads are symmetrically arranged on the screw rod, and the hand wheel is fixed at one end of the screw rod through a bolt; the left-hand thread and the right-hand thread are respectively connected with a set of moving blocks; the middle part of the moving block is embedded with a threaded sleeve, and the top end of the moving block is provided with a first rotating shaft; the threaded sleeve is connected with the screw rod in a threaded connection mode; the outer wall of the moving block is in clearance fit with the inner part of the first mounting frame; the two sets of moving blocks are connected with the lifter through the two sets of connecting plates; two sets of rotating shaft mounting holes are formed in two ends of the connecting plate, and a weight reduction groove is formed in the middle of the connecting plate; the top surface of the lifter is provided with a set of supporting blocks, and the cross sections of the supporting blocks are V-shaped.

Preferably, the lifter comprises a lifting plate, a second rotating shaft and a guide sleeve; two symmetrical lateral edges of the lifting plate are provided with two second rotating shafts, and two sets of guide sleeves are embedded in the other two symmetrical lateral edges of the lifting plate.

Preferably, the two sets of rotating shaft mounting holes on the connecting plate are respectively connected with the first rotating shaft on the moving block and the second rotating shaft on the lifter; the guide sleeve is sleeved on the guide rod; the bottom of the guide rod is connected with the side wall of the first mounting frame through a transition plate.

When the device is used, the first mounting frame and the positioning plate are locked relatively through bolts, the lead screw is driven to rotate through the rotating hand wheel, the lead screw and the two sets of moving blocks move relatively, so that the two sets of moving blocks are driven to move in a synchronous and reverse separation mode or in a synchronous and reverse approach mode, the two sets of moving blocks drive the lifter to move up and down through the transmission of the two sets of connecting plates, the lifting stability of the lifter is ensured through the guide rods and the guide sleeves, the lifter drives the supporting blocks to move up and down, the lead screw and the two sets of moving blocks can realize self-locking, the supporting blocks are in contact with the outer circles of the shafts by adjusting the heights of the supporting blocks in the three sets of part supporters, the outer circles of different diameters of the shafts can be supported, the shaft parts can be sufficiently supported, the supporting stability is improved, when the shaft parts of the same type, the support that once adjusts can satisfy the part with the style, and convenient fixed centre hole locator and activity centre hole locator carry out the tight location of quick clamp to the part, and the rectangle opening that first mounting bracket both sides face bottom set up is favorable to the discharge of cutting waste material, prevents effectively that the waste material from piling up and causing the phenomenon emergence that is unfavorable for the clearance inside first mounting bracket.

Preferably, the clamping device comprises a second mounting frame, a mounting tripod, a clamping cylinder and a clamping block; rectangular openings are formed in the bottoms of the two side faces of the second mounting frame, and two second mounting frame guide blocks are symmetrically arranged on the bottom face of the second mounting frame; the cross section of the second mounting rack guide blocks is arranged to be in a right trapezoid shape, and two sets of the second mounting rack guide blocks are in clearance fit with the two positioning grooves formed in the positioning plate; the top edges of two symmetrical long side surfaces of the second mounting rack are arranged into a V shape; two sets of adjusting grooves are symmetrically arranged on the other two side surfaces of the second mounting rack; the adjusting groove is connected with the mounting tripod through a bolt; the top surface of the mounting triangular frame is fixedly provided with a set of clamping cylinders through bolts; the clamping block is fixed at the end part of the clamping cylinder.

Preferably, the cross section of the clamping block is V-shaped, and two friction plates are symmetrically arranged on the V-shaped inner wall of the clamping block; the friction plate is made of rubber.

Preferably, the fixed center hole positioner comprises a third mounting frame, a guide cylinder, a fixed center and a locking handle; rectangular openings are formed in the bottoms of the two side surfaces of the third mounting rack, and two third mounting rack guide blocks are symmetrically arranged on the bottom surface of the third mounting rack; the cross section of each third mounting rack guide block is arranged into a right trapezoid, and two sets of the third mounting rack guide blocks are in clearance fit with the two positioning grooves formed in the positioning plate; two circular guide cylinder mounting holes are symmetrically formed in two side faces of the third mounting frame; the guide cylinder is fixed in the guide cylinder mounting hole; the fixed centre is sleeved in the guide cylinder; the middle part of the fixed center is provided with a limiting flange; and a locking plate is fixed on the top surface of the third mounting frame.

Preferably, a locking transition hole is formed in the middle of the top surface of the guide cylinder; a locking threaded hole is formed in the middle of the locking plate; the locking threaded hole is arranged opposite to the locking transition hole, and the locking handle is arranged in the locking threaded hole; the locking handle penetrates through the locking transition hole in the guide cylinder and is tightly propped against the fixed tip.

Locking third mounting bracket and locating plate relatively through the bolt, connect fixed centre cup inside the guide cylinder afterwards, and carry on spacingly through the spacing flange that sets up on the fixed centre, it is fixed with fixed centre and third mounting bracket top fastening to utilize the locking handle, prevent that fixed centre from taking place to rotate, and guarantee that fixed centre remains fixed motionless throughout in the clamping process, avoid taking place because top unstability causes axle type part to take place the phenomenon that breaks away from in the course of working, the rectangle opening that third mounting bracket both sides face bottom set up, be favorable to cutting waste's discharge, prevent effectively that the waste material from piling up and causing the phenomenon emergence that is unfavorable for the clearance inside the third mounting bracket.

Preferably, the movable center hole positioner comprises a fourth mounting frame, a positioning cylinder, a guide seat and a movable center; rectangular openings are formed in the bottoms of the two side surfaces of the fourth mounting frame, and two fourth mounting frame guide blocks are symmetrically arranged on the bottom surface of the fourth mounting frame; the cross section of each fourth mounting rack guide block is arranged to be a right trapezoid, and two sets of the fourth mounting rack guide blocks are in clearance fit with the two positioning grooves formed in the positioning plate; a guide seat mounting hole is formed in the middle of the front face of the fourth mounting frame; the guide seat mounting hole is internally provided with a set of guide seat; the guide seat is sleeved with the live center; the tail part of the live center is provided with a connecting threaded hole; the connecting threaded hole is connected with the top of the positioning cylinder in a threaded connection mode; the tail part of the positioning cylinder is fixedly connected with the fourth mounting frame.

The fourth mounting bracket and the positioning plate are locked relatively through the bolt, the guide seat is fixed with the fourth mounting bracket, the movable center is sleeved in the guide seat and connected with the positioning cylinder, the positioning cylinder is used for driving the movable center to do telescopic motion, when the movable center stretches out, the shaft parts are tightly fixed in a propping mode through cooperation with the fixed center, after machining is completed, the movable center retracts, release of the shaft parts is achieved, workers can conveniently and quickly take and place the parts, and when clamping precision and clamping speed are improved, working efficiency is improved.

The invention has the following beneficial effects:

1. in the invention, two sets of positioning plate guide blocks arranged on the bottom surface of the positioning plate are connected with an operation platform of the milling machine, and two positioning grooves arranged on the positioning plate are utilized to fix three sets of part supporters, two sets of clamping devices, a set of fixed central hole positioner and a set of movable central hole positioner on the positioning plate, and the positions of the part supporters and the clamping devices on the positioning plate are adjustable, so that the three sets of part supporters can support different positions of a shaft part, the two sets of clamping devices can clamp different positions of the shaft part, so that different shaft parts can be conveniently supported and clamped at proper positions, the supported shaft part is clamped and positioned by the fixed central hole positioner and the movable central hole positioner, and the quick clamping, positioning and locking of the shaft part can be realized, and the supporters, the clamping devices, the fixed central hole positioners and the movable central hole positioners are movably connected on the positioning plate, the relative position of each subassembly is conveniently adjusted, and applicable in different axle class parts.

2. In the invention, the lead screw is driven to rotate by the rotating hand wheel, the lead screw and the two sets of moving blocks move relatively, thereby driving the two sets of moving blocks to do synchronous reverse separation movement or synchronous reverse approach movement, the two sets of moving blocks drive the lifter to do lifting movement through the transmission of the two sets of connecting plates, and the lifting stability of the lifter is ensured by the guide rod and the guide sleeve, the lifter drives the supporting block to do lifting motion, the screw rod and the two sets of moving blocks can realize self-locking, the supporting block is contacted with the shaft excircle by adjusting the height of the supporting block in the three sets of part supporters, can support the different diameter excircles of counter shaft, realize the abundant support to axle type part, improve support stability, the rectangle opening that first mounting bracket both sides face bottom set up is favorable to the discharge of cutting waste material, prevents effectively that the waste material from piling up and causing the phenomenon emergence that is unfavorable for the clearance inside first mounting bracket.

3. According to the invention, the relative position between the mounting tripod and the second mounting frame is adjusted, so that the included angle air cylinder and the clamping block part arranged on the mounting tripod are opposite to the central axis of the shaft part, no relative dislocation of clamping is ensured, the clamping precision is improved, the contact quality with the shaft part is ensured by utilizing the V-shaped clamping block and the two friction plates arranged on the inner wall of the V-shaped clamping block, the axial rotation of the shaft part is prevented, the stability of key groove milling operation is further ensured, the rectangular openings arranged at the bottoms of the two side surfaces of the second mounting frame are favorable for discharging cutting waste materials, the phenomenon that the top edge is not beneficial to cleaning due to the fact that the waste materials are accumulated in the second mounting frame is effectively prevented, the two symmetrical long side surfaces of the second mounting frame are arranged into a V shape, and the phenomenon that the second.

4. According to the invention, the fixed center is sleeved in the guide cylinder and limited by the limiting flange arranged on the fixed center, the fixed center is fixedly connected with the top of the third mounting frame by the locking handle, the fixed center is prevented from rotating, the fixed center is ensured to be always fixed in the clamping process, the phenomenon that shaft parts are separated in the processing process due to instability of the center is avoided, the rectangular openings arranged at the bottoms of the two side surfaces of the third mounting frame are beneficial to discharging cutting waste materials, and the phenomenon that the waste materials are accumulated in the third mounting frame and are not beneficial to cleaning is effectively prevented.

5. The invention can reasonably distribute three sets of part supporters and two sets of clamping devices on the positioning plate according to the difference of the length and the outer diameter of the shaft parts, so as to be convenient for supporting and clamping, the shaft parts are only needed to be placed on the three sets of part supporters, the fixed central hole positioner and the movable central hole positioner automatically position the shaft parts, the positioned shaft parts are clamped and fixed by the two sets of clamping devices, the complete locking of the shaft parts is realized, the key groove milling operation is immediately carried out, the repeated adjustment is not needed when the same product is processed, the clamping speed is high, the clamping precision of the shaft parts is high, and each structure can be relatively adjusted, the invention is suitable for processing different parts, solves the problems that in the prior art, a worker can finish the clamping of the parts by carrying out multiple operations on the clamp, reduces the clamping precision while reducing the working efficiency, meanwhile, the problem of poor universality of the clamp in the prior art is solved, the universality of the clamp is improved, and the management intensity of enterprises is reduced.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a schematic view of the overall structure of a jig for machining key grooves of shaft parts by a milling machine according to the present invention;

FIG. 2 is a schematic view of a positioning plate according to the present invention;

FIG. 3 is a schematic view showing the overall structure of the parts supporter according to the present invention;

FIG. 4 is a schematic structural view of a connecting plate according to the present invention;

FIG. 5 is a schematic view of the support block of the present invention;

FIG. 6 is a schematic view showing the structure of a moving block according to the present invention;

FIG. 7 is a schematic view of the construction of the lead screw of the present invention;

FIG. 8 is a schematic view of the construction of the elevator of the present invention;

FIG. 9 is a schematic view of the construction of the first mount of the present invention;

FIG. 10 is a schematic view showing the overall construction of the clamper in the present invention;

FIG. 11 is a schematic view of the construction of the clamping block of the present invention;

fig. 12 is a schematic structural view of a mounting tripod in the present invention;

FIG. 13 is a schematic view of the construction of a second mount of the present invention;

FIG. 14 is a schematic view of the overall construction of the fixed center hole positioner of the present invention;

FIG. 15 is a schematic view of the construction of the guide cylinder according to the present invention;

FIG. 16 is a schematic view of a third mount of the present invention;

fig. 17 is a schematic structural view of a fixed center according to the present invention;

FIG. 18 is a schematic view of the overall construction of the active center hole locator of the present invention;

FIG. 19 is a schematic view of a fourth mount of the present invention;

fig. 20 is a schematic view of the construction of a live center of the present invention;

in the figure: the positioning plate comprises a positioning plate 1, a positioning groove 11, a positioning plate guide block 12, a part support 2, a connecting plate 21, a lightening groove 211, a rotating shaft mounting hole 212, a supporting block 22, a moving block 23, a first rotating shaft 231, a threaded sleeve 232, a hand wheel 24, a bearing seat 25, a screw rod 26, a left-hand thread 261, a right-hand thread 262, a lifter 27, a lifter plate 271, a second rotating shaft 272, a guide sleeve 273, a first mounting frame 28, a guide rod 281, a screw rod mounting hole 282, a transition plate 283, a first mounting frame guide block 284, a clamper 3, a clamping cylinder 31, a clamping block 32, a friction plate 321, a mounting tripod 33, a mounting threaded hole 331, a second mounting frame 34, a second mounting frame guide block 341, an adjusting groove 342, a fixed central hole positioner 4, a guide cylinder 41, a locking transition hole 411, a locking handle 42, a third 43, a guide cylinder mounting frame mounting hole 431, a locking threaded hole 432, a locking plate 433, the positioning device comprises a fixed center 44, a limiting flange 441, a movable center hole positioner 5, a positioning cylinder 51, a fourth mounting frame 52, a guide seat mounting hole 521, a fourth mounting frame guide block 522, a guide seat 53, a movable center 54 and a connecting threaded hole 541.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 and 2, a jig for processing a keyway of a shaft part by a milling machine comprises a positioning plate 1; three sets of part supporters 2, two sets of clamping devices 3, a set of fixed central hole positioner 4 and a set of movable central hole positioner 5 are arranged on the positioning plate 1; the three sets of part supporters 2 are arranged in the middle of the positioning plate 1; the two sets of the clamping devices 3 are respectively arranged at two sides of the three sets of the part supports 2; the fixed center hole positioner 4 is arranged at one end of the positioning plate 1; the movable central hole positioner 5 is arranged at the other end of the positioning plate 1; the top surface of the positioning plate 1 is symmetrically provided with two positioning grooves 11; two sets of positioning plate guide blocks 12 are symmetrically arranged on the bottom surface of the positioning plate 1; the cross sections of the positioning groove 11 and the guide block 12 are both arranged into a right trapezoid.

When the device works, two sets of positioning plate guide blocks 12 arranged on the bottom surface of the positioning plate 1 are connected with an operation platform of a milling machine, and two positioning grooves 11 arranged on the positioning plate 1 are utilized to fix three sets of part supporters 2, two sets of clamping devices 3, one set of fixed central hole positioner 4 and one set of movable central hole positioner 5 on the positioning plate 1, the positions of the part supporters 2 and the clamping devices 3 on the positioning plate 1 are adjustable, so that the three sets of part supporters 2 can support different positions of a shaft part, the two sets of clamping devices 3 can clamp different positions of the shaft part, so that different shaft parts can be conveniently supported and clamped at proper positions, the supported shaft parts are clamped and positioned by the fixed central hole positioners 4 and the movable central hole positioners 5, so that the shaft parts can be quickly clamped, positioned and locked, and the supporters 2 and the clamping devices 3 can quickly clamp and clamp the shaft parts, The fixed central hole positioner 4 and the movable central hole positioner 5 are movably connected on the positioning plate 1, so that the relative positions of the components can be conveniently adjusted, and the fixed central hole positioner and the movable central hole positioner are suitable for different shaft parts.

As shown in fig. 3 to 9, the parts supporter 2 includes a first mounting bracket 28, a lead screw 26, a moving block 23, a connecting plate 21, a lifter 27, a supporting block 22, and a hand wheel 24; rectangular openings are formed in the bottoms of the two side faces of the first mounting frame 28; two first-mounting-frame guide blocks 284 are symmetrically arranged on the bottom surface of the first mounting frame 28; the cross section of the first mount guide block 284 is a right trapezoid, and two sets of the first mount guide blocks 284 are in clearance fit with the two positioning grooves 11 arranged on the positioning plate 1; two screw rod mounting holes 282 are symmetrically formed in two ends of the first mounting frame 28, and screw rods 26 are inserted in the two screw rod mounting holes 282; the screw rod 26 is connected with the first mounting frame 28 through two sets of bearing seats 25; the bearing block 25 is fixedly connected with the first mounting frame 28 through screws; a set of left-handed threads 261 and a set of right-handed threads 262 are symmetrically arranged on the screw rod 26, and the hand wheel 24 is fixed at one end of the screw rod 26 through a bolt; the left-hand thread 261 and the right-hand thread 262 are respectively connected with a set of the moving block 23; a threaded sleeve 232 is embedded in the middle of the moving block 23, and a first rotating shaft 231 is arranged at the top end of the moving block; the threaded sleeve 232 is connected with the screw rod 26 in a threaded connection mode; the outer wall of the moving block 23 is in clearance fit with the inner part of the first mounting frame 28; the two sets of moving blocks 23 are connected with the lifter 27 through the two sets of connecting plates 21; two sets of rotating shaft mounting holes 212 are formed in two ends of the connecting plate 21, and a weight reduction groove 211 is formed in the middle of the connecting plate 21; the top surface of the lifter 27 is provided with a set of the supporting blocks 22, and the cross section of each supporting block 22 is arranged in a V shape.

The lifter 27 comprises a lifting plate 271, a second rotating shaft 272 and a guide sleeve 273; two second rotating shafts 272 are arranged on two symmetrical side edges of the lifting plate 271, and two sets of guide sleeves 273 are embedded on the other two symmetrical side edges of the lifting plate 271.

Two sets of rotating shaft mounting holes 212 on the connecting plate 21 are respectively connected with the first rotating shaft 231 on the moving block 23 and the second rotating shaft 272 on the lifter 27; the guide sleeve 273 is sleeved on the guide rod 281; the bottom of the guide rod 281 is connected with the side wall of the first mounting frame 28 through a transition plate 283.

When the self-locking type shaft part support is used, the first mounting frame 28 and the positioning plate 1 are locked relatively through bolts, the lead screw 26 is driven to rotate through the rotating hand wheel 24, the lead screw 26 and the two sets of moving blocks 23 move relatively, the two sets of moving blocks 23 are further driven to move in a synchronous reverse separation mode or in a synchronous reverse approach mode, the two sets of moving blocks 23 drive the lifter 27 to move up and down through the transmission of the two sets of connecting plates 21, the lifting stability of the lifter 27 is guaranteed through the guide rods 281 and the guide sleeves 273, the lifter 27 drives the support blocks 22 to move up and down, the lead screw 26 and the two sets of moving blocks 23 can realize self-locking, the support blocks 22 are enabled to be in contact with the shaft excircle by adjusting the height of the support blocks 22 in the three sets of part supports 2, the shaft excircles with different diameters can be supported, only need support the regulation to first axle type part, can be applicable to remaining same style axle type part, once adjust the support that can satisfy same style part, make things convenient for fixed center hole locator 4 and activity center hole locator 5 to carry out the tight location of quick clamp to the part, the rectangle opening that first mounting bracket 28 both sides face bottom set up is favorable to the discharge of cutting waste material, prevents effectively that the waste material from piling up and causing the phenomenon emergence that is unfavorable for the clearance inside first mounting bracket 28.

As shown in fig. 10 to 13, the clamper 3 includes a second mounting bracket 34, a mounting tripod 33, a clamping cylinder 31, and a clamping block 32; rectangular openings are formed in the bottoms of the two side surfaces of the second mounting frame 34, and two second mounting frame guide blocks 341 are symmetrically arranged on the bottom surface of the second mounting frame 34; the cross section of the second mount guide block 341 is a right trapezoid, and two sets of the second mount guide blocks 341 are in clearance fit with the two positioning grooves 11 formed in the positioning plate 1; the top edges of two symmetrical long side surfaces of the second mounting rack 34 are arranged into a V shape; two sets of adjusting grooves 342 are symmetrically arranged on the other two side surfaces of the second mounting rack 34; the adjustment groove 342 is connected with the mounting tripod 33 by a bolt; the top surface of the mounting tripod 33 is fixed with a set of the clamping cylinder 31 through bolts; the clamping block 32 is fixed at the end of the clamping cylinder 31.

The section of the clamping block 32 is in a V shape, and two friction plates 321 are symmetrically arranged on the V-shaped inner wall of the clamping block 32; the friction plate 321 is made of rubber.

When in use, the second mounting bracket 34 is locked relatively to the positioning plate 1 through the bolt, and by adjusting the relative position between the mounting tripod 33 and the second mounting bracket 34, the middle parts of the included angle cylinder 31 and the clamping block 32 arranged on the mounting tripod 33 are opposite to the central axis of the shaft part, so that no relative dislocation of clamping is ensured, the clamping precision is improved, and the V-shaped included angle block 32 and the two friction plates 321 arranged on the inner wall of the V-shaped included angle block ensure the contact quality with the shaft parts, prevent the shaft parts from rotating axially, and then guaranteed the stability of milling key groove operation, the rectangle opening that second mounting bracket 34 both sides face bottom set up is favorable to cutting the discharge of waste material, prevents effectively that the waste material from piling up and causing the phenomenon that is unfavorable for the clearance to take place inside second mounting bracket 34, and the long side of second mounting bracket 34 bisymmetry, topside set the V type, effectively avoid second mounting bracket 34 and axle type part to take place the phenomenon of interference.

As shown in fig. 14 to 17, the fixed center hole locator 4 includes a third mounting bracket 43, a guide cylinder 41, a fixing tip 44, and a locking handle 42; rectangular openings are formed in the bottoms of the two side surfaces of the third mounting frame 43, and two third mounting frame guide blocks 434 are symmetrically arranged on the bottom surface of the third mounting frame 43; the cross section of the third-mount guide block 434 is a right trapezoid, and two sets of the third-mount guide blocks 434 are in clearance fit with the two positioning grooves 11 formed in the positioning plate 1; two circular guide cylinder mounting holes 431 are symmetrically formed in two side surfaces of the third mounting frame 43; the guide cylinder 41 is fixed in the guide cylinder mounting hole 431; the fixed centre 44 is sleeved in the guide cylinder 41; the middle part of the fixed centre 44 is provided with a limiting flange 441; a locking plate 433 is fixed to the top surface of the third mounting frame 43.

A locking transition hole 411 is formed in the middle of the top surface of the guide cylinder 41; a locking threaded hole 432 is formed in the middle of the locking plate 433; the locking threaded hole 432 is arranged opposite to the locking transition hole 411, and the locking handle 42 is arranged in the locking threaded hole 432; the locking handle 42 passes through the locking transition hole 411 on the guide cylinder 41 and is tightly pressed against the fixed centre 44.

During the use, lock third mounting bracket 43 and locating plate 1 relatively through the bolt, cup joint fixed centre 44 inside guide cylinder 41 afterwards, and carry on spacingly through the spacing flange 411 that sets up on the fixed centre 44, it is tight fixed with fixed centre 44 and third mounting bracket 43 top to utilize locking handle 42, prevent that fixed centre 44 from taking place to rotate, and guarantee that fixed centre 44 remains stationary throughout at the clamping-process, avoid taking place because top unstability causes axle type part to take place the phenomenon that breaks away from in the course of working, the rectangle opening that third mounting bracket 43 both sides face bottom set up, be favorable to cutting waste's discharge, prevent effectively that the waste material from piling up and causing the phenomenon emergence that is unfavorable for the clearance inside third mounting bracket 43.

As shown in fig. 18 to 20, the movable center hole positioner 5 includes a fourth mounting bracket 52, a positioning cylinder 51, a guide seat 53 and a movable center 54; rectangular openings are formed in the bottoms of the two side surfaces of the fourth mounting frame 52, and two fourth mounting frame guide blocks 522 are symmetrically arranged on the bottom surface of the fourth mounting frame 52; the cross section of the fourth mount guide block 522 is arranged to be a right trapezoid, and two sets of the fourth mount guide blocks 522 are in clearance fit with the two positioning grooves 11 arranged on the positioning plate 1; a guide seat mounting hole 521 is formed in the middle of the front surface of the fourth mounting frame 52; the guide seat mounting hole 521 is internally provided with a set of the guide seat 53; the guide seat 53 is sleeved with the live center 54; the tail part of the live center 54 is provided with a connecting threaded hole 541; the connecting threaded hole 541 is connected with the top of the positioning cylinder 51 in a threaded connection manner; the tail part of the positioning cylinder 51 is fixedly connected with the fourth mounting frame 52.

During the use, with fourth mounting bracket 52 and locating plate 1 locking relatively through the bolt, guide holder 53 is fixed with fourth mounting bracket 52, live center 54 cup joints in guide holder 53 and is connected with location cylinder 51, utilize location cylinder 51 to drive live center 54 and be concertina movement, when live center 54 stretches out, with the cooperation of fixed center 44 with axle type part top tight fixed, after processing is accomplished, live center 54 retracts, realize the release to axle type part, the workman of being convenient for gets the part fast, when improving clamping precision and clamping speed, also accelerated work efficiency.

During operation, according to the difference of the length and the outer diameter of the shaft parts, three sets of part supporters 2 and two sets of clamping devices 3 are reasonably distributed on the positioning plate 1, so that the shaft parts are convenient to support and clamp, the shaft parts which are clamped for the first time are manually clamped by adjusting the fixed central hole positioner 4 and the movable central hole positioner 5, after the shaft parts are clamped, the hand wheel 24 in the part supporter 2 is rotated to drive the lead screw 26 to rotate, the lead screw 26 and the two sets of moving blocks 23 move relatively, so that the two sets of moving blocks 23 are driven to perform synchronous reverse separation movement or synchronous reverse approach movement, the two sets of moving blocks 23 drive the lifter 27 to perform lifting movement through the transmission of the two sets of connecting plates 21, the lifting stability of the lifter 27 is ensured through the guide rods 281 and the guide sleeves 273, the lifter 27 drives the supporting block 22 to perform lifting movement, and the lead screw 26 and the two sets of, the supporting block 22 is contacted with the bottom of the excircle of the shaft part to support the shaft part, the three sets of part supporters 2 support three excircles, the contact quality is improved, meanwhile, the shaft part is rapidly placed in place, the relative position between the mounting tripod 33 and the second mounting frame 34 in the clamping device 3 is adjusted, the middle parts of the included angle air cylinder 31 and the clamping block 32 arranged on the mounting tripod 33 are enabled to be opposite to the central axis of the shaft part, no relative dislocation of clamping is ensured, the clamping precision is improved, the contact quality with the shaft part is ensured by utilizing the included angle block 32 arranged in a V shape and two friction plates 321 arranged on the inner wall of the included angle block 32, the axial rotation of the shaft part is prevented, the stability of key groove milling operation is further ensured, and after the positioning, supporting and clamping operation on the first shaft part is completed, in the subsequent batch processing process of the part, the shaft parts are placed on the three sets of part supports 2, the fixed center hole positioner 4 and the movable center hole positioner 5 are used for automatically positioning the shaft parts, the positioned shaft parts are clamped and fixed through the two sets of clamping devices 3, complete locking of the shaft parts is achieved, key groove milling operation is immediately performed, repeated adjustment is not needed when the same product is processed, the clamping speed is high, the clamping precision of the shaft parts is high, the structures can be adjusted relatively, the shaft parts can be suitable for processing different parts, the problem that in the prior art, the clamping precision can be reduced when a worker operates the clamp for multiple times is solved, the problem that in the prior art, the clamping precision is reduced, the problem that in the prior art, the universality of the clamp is poor is solved, the universality of the clamp is improved, and the management intensity of enterprises is reduced.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A milling machine processing shaft part key groove clamp comprises a positioning plate (1); the method is characterized in that: three sets of part supporters (2), two sets of clamping devices (3), a set of fixed central hole positioner (4) and a set of movable central hole positioner (5) are arranged on the positioning plate (1); the three sets of part supporters (2) are arranged in the middle of the positioning plate (1); the two sets of the clamping devices (3) are respectively arranged at two sides of the three sets of the part supporting devices (2); the fixed center hole positioner (4) is arranged at one end of the positioning plate (1); the movable central hole positioner (5) is arranged at the other end of the positioning plate (1); two positioning grooves (11) are symmetrically arranged on the top surface of the positioning plate (1); two sets of positioning plate guide blocks (12) are symmetrically arranged on the bottom surface of the positioning plate (1); the cross sections of the positioning groove (11) and the guide block (12) are both arranged to be right-angled trapezoids.

2. The clamp for machining the key groove of the shaft part by the milling machine according to claim 1, wherein: the part support (2) comprises a first mounting frame (28), a screw rod (26), a moving block (23), a connecting plate (21), a lifter (27), a supporting block (22) and a hand wheel (24); rectangular openings are formed in the bottoms of the two side faces of the first mounting frame (28); two first mounting frame guide blocks (284) are symmetrically arranged on the bottom surface of the first mounting frame (28); the cross section of the first mounting rack guide blocks (284) is in a right trapezoid shape, and two sets of the first mounting rack guide blocks (284) are in clearance fit with the two positioning grooves (11) arranged on the positioning plate (1); two screw rod mounting holes (282) are symmetrically formed in two ends of the first mounting frame (28), and screw rods (26) are inserted in the two screw rod mounting holes (282); the screw rod (26) is connected with the first mounting frame (28) through two sets of bearing seats (25); the bearing seat (25) is fixedly connected with the first mounting frame (28) through a screw; a set of left-handed threads (261) and a set of right-handed threads (262) are symmetrically arranged on the screw rod (26), and one end of the screw rod (26) is fixed with the hand wheel (24) through a bolt; the left-handed thread (261) and the right-handed thread (262) are respectively connected with a set of moving block (23); a threaded sleeve (232) is embedded in the middle of the moving block (23), and a first rotating shaft (231) is arranged at the top end of the moving block; the threaded sleeve (232) is connected with the screw rod (26) in a threaded connection mode; the outer wall of the moving block (23) is in clearance fit with the inner part of the first mounting frame (28); the two sets of moving blocks (23) are connected with the lifter (27) through the two sets of connecting plates (21); two sets of rotating shaft mounting holes (212) are formed in two ends of the connecting plate (21), and a weight reduction groove (211) is formed in the middle of the connecting plate (21); the top surface of the lifter (27) is provided with a set of supporting blocks (22), and the cross section of each supporting block (22) is V-shaped.

3. The clamp for machining the key groove of the shaft part by the milling machine according to claim 2, wherein: the lifter (27) comprises a lifting plate (271), a second rotating shaft (272) and a guide sleeve (273); two second rotating shafts (272) are arranged on two symmetrical side edges of the lifting plate (271), and two sets of guide sleeves (273) are embedded on the other two symmetrical side edges of the lifting plate (271).

4. The clamp for machining the key groove of the shaft part by the milling machine according to claim 3, wherein: two sets of rotating shaft mounting holes (212) on the connecting plate (21) are respectively connected with the first rotating shaft (231) on the moving block (23) and the second rotating shaft (272) on the lifter (27); the guide sleeve (273) is sleeved on the guide rod (281); the bottom of the guide rod (281) is connected with the side wall of the first mounting frame (28) through a transition plate (283).

5. The clamp for machining the key groove of the shaft part by the milling machine according to claim 1, wherein: the clamping device (3) comprises a second mounting frame (34), a mounting tripod (33), a clamping cylinder (31) and a clamping block (32); rectangular openings are formed in the bottoms of the two side faces of the second mounting rack (34), and two second mounting rack guide blocks (341) are symmetrically arranged on the bottom face of the second mounting rack (34); the cross section of the second mounting rack guide block (341) is in a right trapezoid shape, and two sets of the second mounting rack guide blocks (341) are in clearance fit with the two positioning grooves (11) arranged on the positioning plate (1); the top edges of two symmetrical long side surfaces of the second mounting rack (34) are arranged into a V shape; two sets of adjusting grooves (342) are symmetrically arranged on the other two side surfaces of the second mounting rack (34); the adjusting groove (342) is connected with the mounting tripod (33) through a bolt; the top surface of the mounting tripod (33) is fixed with a set of clamping cylinders (31) through bolts; the clamping block (32) is fixed at the end part of the clamping cylinder (31).

6. The clamp for machining the key groove of the shaft part by the milling machine according to claim 5, wherein: the section of the clamping block (32) is V-shaped, and two friction plates (321) are symmetrically arranged on the V-shaped inner wall of the clamping block (32); the friction plate (321) is made of rubber.

7. The clamp for machining the key groove of the shaft part by the milling machine according to claim 1, wherein: the fixed center hole positioner (4) comprises a third mounting frame (43), a guide cylinder (41), a fixed center (44) and a locking handle (42); rectangular openings are formed in the bottoms of the two side surfaces of the third mounting rack (43), and two third mounting rack guide blocks (434) are symmetrically arranged on the bottom surface of the third mounting rack (43); the cross section of each third mounting rack guide block (434) is arranged to be a right trapezoid, and two sets of third mounting rack guide blocks (434) are in clearance fit with the two positioning grooves (11) arranged on the positioning plate (1); two circular guide cylinder mounting holes (431) are symmetrically formed in two side faces of the third mounting frame (43); the guide cylinder (41) is fixed in the guide cylinder mounting hole (431); the fixed center (44) is sleeved in the guide cylinder (41); the middle part of the fixed center (44) is provided with a limiting flange (441); and a locking plate (433) is fixed on the top surface of the third mounting frame (43).

8. The clamp for machining the key groove of the shaft part by the milling machine according to claim 7, wherein: a locking transition hole (411) is formed in the middle of the top surface of the guide cylinder (41); a locking threaded hole (432) is formed in the middle of the locking plate (433); the locking threaded hole (432) is arranged opposite to the locking transition hole (411), and the locking handle (42) is arranged in the locking threaded hole (432); the locking handle (42) penetrates through the locking transition hole (411) on the guide cylinder (41) and is tightly propped against the fixed center (44).

9. The clamp for machining the key groove of the shaft part by the milling machine according to claim 1, wherein: the movable center hole positioner (5) comprises a fourth mounting frame (52), a positioning cylinder (51), a guide seat (53) and a movable center (54); rectangular openings are formed in the bottoms of the two side faces of the fourth mounting rack (52), and two fourth mounting rack guide blocks (522) are symmetrically arranged on the bottom face of the fourth mounting rack (52); the cross section of the fourth mounting rack guide block (522) is arranged to be a right trapezoid, and two sets of the fourth mounting rack guide blocks (522) are in clearance fit with the two positioning grooves (11) arranged on the positioning plate (1); a guide seat mounting hole (521) is formed in the middle of the front face of the fourth mounting frame (52); the guide seat mounting hole (521) is internally provided with a set of guide seats (53); the guide seat (53) is internally sleeved with the live center (54); the tail part of the live center (54) is provided with a connecting threaded hole (541); the connecting threaded hole (541) is connected with the top of the positioning cylinder (51) in a threaded connection mode; the tail part of the positioning cylinder (51) is fixedly connected with the fourth mounting frame (52).