CN114227331B - Shaft finish machining fixture and shaft machining machine tool - Google Patents

Shaft finish machining fixture and shaft machining machine tool Download PDF

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Publication number
CN114227331B
CN114227331B CN202111548076.4A CN202111548076A CN114227331B CN 114227331 B CN114227331 B CN 114227331B CN 202111548076 A CN202111548076 A CN 202111548076A CN 114227331 B CN114227331 B CN 114227331B
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China
Prior art keywords
base
expansion sleeve
shaft
sleeve
workpiece
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Active
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CN202111548076.4A
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Chinese (zh)
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CN114227331A (en
Inventor
罗应涛
肖功林
钟小华
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Guangzhou Rovma Auto Parts Co ltd
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Guangzhou Rovma Auto Parts Co ltd
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Priority to CN202111548076.4A priority Critical patent/CN114227331B/en
Publication of CN114227331A publication Critical patent/CN114227331A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/12Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/18Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for positioning only
    • B23Q3/183Centering devices

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

The invention discloses a shaft finish machining clamp which comprises a base, a shell, a connecting sleeve, an expansion sleeve and a supporting cover, wherein the base is provided with a plurality of connecting grooves; one end of the shell is sequentially provided with a base mounting cavity, a connecting sleeve mounting cavity and an expansion sleeve mounting cavity, the expansion sleeve is accommodated in the expansion sleeve mounting cavity, and the connecting sleeve is mounted in the connecting sleeve mounting cavity; one end of the expansion sleeve is connected with the connecting sleeve in a matching way, the other end of the expansion sleeve is arranged on the port of the other end of the shell, and the supporting cover is fixed on the other port of the shell; the base is fixed in the base mounting cavity, and one end of the base is connected with the connecting sleeve. The shaft finish machining clamp is used for fixing a workpiece through the expansion sleeve, the movable center is arranged in the shaft finish machining clamp for centering, the clamp is used for positioning through the maximum outer circle of the workpiece, the clamping operation is simple and convenient, the workpiece cannot be worn in the clamping process, centering positioning of the workpiece is completed in the clamping process, and the production efficiency is improved.

Description

Shaft finish machining fixture and shaft machining machine tool
Technical Field
The invention mainly relates to the field of machining equipment, in particular to a shaft finish machining clamp and a shaft machining machine tool.
Background
The existing shaft machining process comprises the steps of double-head turning, heat treatment, hole grinding, straightening, rough grinding, finish turning of an inner hole, finish turning of the length, finish grinding, cleaning and inspection, and in the shaft machining process, the rough grinding needs to be carried out on a shaft before the finish turning of the inner hole of the shaft, so that a workpiece is conveniently clamped in the finish machining process, but the workpiece is clamped by a clamping jaw in the finish turning of the inner hole, abrasion is easy to occur on the surface of the workpiece and a stepped surface, the centering positioning needs to be carried out by using a positioning device in the clamping process, the operation is complex, and the production efficiency is low.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a shaft finish machining clamp and a shaft machining machine tool. The fixture fixes the workpiece through the expansion sleeve, the movable center is arranged in the fixture to center, the fixture positions through the maximum outer circle of the workpiece, the clamping operation is simple and convenient, the workpiece cannot be worn in the clamping process, and the production efficiency is improved.
The invention provides a shaft finish machining clamp which comprises a base, a shell, a connecting sleeve, an expansion sleeve and a supporting cover, wherein the base is provided with a plurality of connecting grooves;
one end of the shell is sequentially provided with a base mounting cavity, a connecting sleeve mounting cavity and an expansion sleeve mounting cavity, the expansion sleeve is accommodated in the expansion sleeve mounting cavity, and the connecting sleeve is mounted in the connecting sleeve mounting cavity;
one end of the expansion sleeve is connected with the connecting sleeve in a matching way, the other end of the expansion sleeve is arranged on the port of the other end of the shell, and the supporting cover is fixed on the other port of the shell;
the base is fixed in the base mounting cavity, and one end of the base is connected with the connecting sleeve.
The movable center mounting groove is formed in the base, and a movable center is fixed in the movable center mounting groove.
The movable center mounting groove is internally provided with a lower pull rod, one end of the movable center is fixed on the lower pull rod, and the other end of the movable center extends out of the base.
The base is provided with a center cover, and the center cover covers the movable center.
The connecting sleeve is provided with a threaded connecting part, and the threaded connecting part is provided with internal threads;
an external thread is arranged at one end of the expansion sleeve, and the external thread is connected with the internal thread in a matched mode.
A spring is arranged in the center cover, one end of the spring is fixed on the movable center, and the other end of the spring is fixed on the base.
A screw connecting hole is formed in the wall of the shell, a matching hole is formed in the outer wall of the expansion sleeve, and the screw connecting hole is correspondingly connected with the matching hole;
the shell and the expansion sleeve are fixedly connected through an anti-rotation screw.
The support cover is fixed at the other end of the shell, and a connecting through hole is formed in the support cover. The step surfaces of the largest outer circles of the end face workpieces of the connecting through holes are connected.
The invention also provides a shaft machining machine tool, which comprises a shaft machining clamping device, wherein the shaft machining clamping device is provided with a rotating body, and the rotating body is provided with a plurality of stations;
a shaft finishing jig as claimed in any one of claims 1 to 8 provided at any one of the stations.
The rotary body is of a cylindrical structure, and the stations are circumferentially arranged on the circumferential side wall of the rotary body or on the upper end face of the rotary body.
The invention provides a shaft finish machining clamp and a shaft machining machine tool, wherein the shaft finish machining clamp is used for fixing a workpiece through an expansion sleeve, a movable center is arranged in the shaft finish machining clamp for centering, the clamp is used for positioning through the maximum outer circle of the workpiece, the clamping operation is simple and convenient, the workpiece cannot be worn in the clamping process, centering positioning of the workpiece is completed in the clamping process, and the production efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a center shaft finishing machine in an embodiment of the invention;
FIG. 2 is a schematic view of a rotor according to a first embodiment of the present invention;
FIG. 3 is a schematic view of a fixture according to an embodiment of the present invention;
FIG. 4 is an exploded view of a clamp according to an embodiment of the present invention;
fig. 5 is a schematic view of a rotor structure in a second embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
fig. 1 shows a schematic structural diagram of a shaft finishing machine tool in an embodiment of the invention, wherein the shaft finishing machine tool comprises a machine tool body and a shaft finishing device, the shaft finishing device is arranged on the shaft finishing machine tool, the shaft finishing device comprises a rotating body 1 and a clamp 2, the rotating body 1 is fixed on the shaft finishing machine tool, a plurality of stations are arranged on the rotating body 1, and the clamp 2 is arranged on any one station of the plurality of stations.
Specifically, fig. 2 shows a schematic structural diagram of a rotating body in an embodiment of the present invention, the rotating body 1 is fixed on the processing machine tool, a dividing disc 11 is disposed at the bottom of the rotating body 1, and the dividing disc 11 ensures that the rotating body 1 rotates to a suitable processing position each time.
Further, the rotator 1 is in a cylindrical structure, a plurality of working stations are arranged on the rotator 1, each working station comprises a first working station 12, a second working station 13 and a third working station 14, and any one working station of the first working station 12, the second working station 13 and the third working station 14 is provided with the clamp 2. The fixture 2 is used for clamping and fixing a workpiece, when the first station 12 finishes machining, the rotating piece 1 rotates to enable the second station 13 to rotate to a machining position for new workpiece machining, the first station 12 rotates to the side of the machine tool, the operation of disassembling and replacing the workpiece is convenient for workers, and the rotating piece 1 can disassemble the machined workpiece and clamp the workpiece to be machined while machining the workpiece, so that production efficiency can be improved.
Alternatively, the number of the stations may be 3, or 4, or 5, or 6, or the like, according to actual processing requirements.
Specifically, the inside a plurality of rotation motor that is provided with of rotation piece 1, a plurality of rotation motor with a plurality of station one-to-one, the station is under the effect of rotation motor, can be based on rotation motor rotates.
Further, the clamp 2 is fixed on the station, an elastic clamping jaw is arranged on the station, the clamp 2 is clamped by the elastic clamping jaw, the clamp 2 stretches into the station and is connected with the motor spindle in a matched mode, and the rotating motor is connected with the clamp 2 in a matched mode through the motor spindle to drive the clamp 2 to rotate.
Specifically, fig. 3 shows a schematic diagram of a fixture structure in an embodiment of the present invention, fig. 4 shows an explosion schematic diagram of a fixture structure in an embodiment of the present invention, the fixture 2 includes a base 21, a housing 22, and a supporting cover 26, one end of the housing 22 sequentially forms a base mounting cavity 221, a connecting sleeve mounting cavity 222, and an expansion sleeve mounting cavity 224, one end of the base 21 is cooperatively connected with the base mounting cavity 221, the connecting sleeve 24 is fixed in the connecting sleeve mounting cavity 222, and the expansion sleeve 25 is sleeved in the expansion sleeve mounting cavity 224.
The shell 22 is of a conical structure, the base 21 is fixed at one end of the shell 22, the base 21 is fixed on a station of the rotating body 1, one end of the base 21 is fixedly connected with the shell 22, the other end of the base 21 is fixed on the station, the other end of the base 21 is provided with a main shaft connecting port 212, the main shaft connecting port 212 is of a conical opening, the opening taper of the main shaft connecting port 212 is matched with the taper of a motor main shaft of the rotating motor, and the base 21 is connected with the motor main shaft of the rotating motor in a matched mode through the main shaft connecting port 212.
One end of the housing 22 is provided with a step surface structure, and the housing is connected and matched with the base 21 through the step surface structure and is connected and fixed through a screw. The other end of the shell 22 is provided with a taper structure, namely, the outer diameter of the other end of the shell 22 is reduced, one end of the shell 22 is fixed on the base 21 and is fixed on a station of the rotating piece 1 based on the base 21, and the taper structure reduces the outer diameter of the shell 22, so that the swing amplitude of the clamp 2 during rotation is reduced, and the central position of a workpiece is ensured not to be changed in a jumping manner during processing.
Specifically, a movable center 23 is disposed at a middle position of the base 21, and the movable center 23 is used for centering and positioning a workpiece. The movable center 23 is installed on the movable center installation groove 211, the movable center 23 comprises a spring 231 and a pull-down rod 233, the spring 231 is arranged between the movable center 23 and the base 21, the spring 231 is used for buffering the pressure born by the movable center 23, the movable center 23 can be reset based on the spring 231, and the pull-down rod 233 is used for pulling the movable center 23 to separate the movable center 23 from the matched connection with a workpiece.
Alternatively, the number of the springs 231 may be 2, or 3, or 4, or the like, and the springs 231 may be capable of carrying 2kg of gravity, so as to prevent the springs from being damaged during the clamping process.
Specifically, the movable center 23 is provided with a center cover 232, the center cover 232 is fixed on the base 21, the center cover 232 covers the movable center 23, the movable center 23 extends out of a center hole of the center cover 232, the center cover 232 is used for limiting the position and the extending length of the movable center 23, the movable center 23 is prevented from being deviated, the accuracy of the matching position is ensured, meanwhile, the movable center 23 is protected, and scraps, dust and the like are prevented from entering the movable center 23, so that the work of the movable center 23 is affected.
Further, the movable center 23 is in a cone structure, in the process of clamping a workpiece, the movable center 23 is extruded by the workpiece to move in the direction of the base 21, the contact area of the movable center 23 and the center cover 232 is small, friction between the movable center and the center cover 232 can be reduced, when the workpiece is clamped, the movable center 23 is propped against a central hole of the workpiece under the action of the spring 231, and the movable center 23 and the center cover 232 are tightly matched under the action of the spring 231, so that the clamping stability is ensured.
Specifically, grease is disposed in the tip cover 232, when the workpiece is clamped each time, a relative moving state exists between the movable tip 23 and the tip cover 232, when the workpiece is clamped, the movable tip 23 and the tip cover 232 are tightly attached to each other, the grease reduces friction between the movable tip 23 and the tip cover 232, and the service life of the movable tip 23 is ensured.
Furthermore, the grease can be sodium-based grease or calcium-sodium grease.
Specifically, a connecting sleeve 24 is disposed between the housing 22 and the base 21, a base mounting cavity 221 and a connecting sleeve mounting cavity 222 are disposed on the bottom of the housing 22, the base 21 is matched with the base mounting cavity 221, and the top surface of the base 21 is connected with the end surface of one end of the housing 22 and is fixed by screw connection. The connecting sleeve mounting cavity 222 is connected with the base mounting cavity 221, the connecting sleeve 24 is arranged on the connecting sleeve mounting cavity 222, the connecting sleeve 222 is used for connecting the base 21 and the shell 22, and a buffer effect is achieved between the shell 22 and the base 21.
Further, a threaded connection portion 241 is provided on the connecting sleeve 24, and an internal thread is provided on the threaded connection portion 241.
Specifically, an expansion sleeve 25 is disposed inside the housing 22, an external thread is disposed at one end of the expansion sleeve 25, one end of the expansion sleeve 25 extends into the housing 22, and is fixedly connected with a threaded connection portion 241 of the connecting sleeve 24 through cooperation of the internal thread and the external thread, a central sleeve hole 242 is formed in the connecting sleeve 24, a tip cover 23 of the movable tip 23 is sleeved in the central sleeve hole 242, and the movable tip 23 extends into the connecting sleeve 24 through the central sleeve hole 242.
Specifically, the expansion sleeve 25 is sleeved in the casing 22 and is accommodated in the expansion sleeve mounting cavity 224, the outer wall of the expansion sleeve 25 is tightly connected with the inner wall of the casing 22, a screw connecting hole 223 is formed in the wall of the casing 22, a matching hole 251 is formed in the outer wall of the expansion sleeve 25, and when the expansion sleeve 25 is matched with the casing 22, the screw connecting hole 223 is correspondingly connected with the matching hole 251 and is fixedly connected through an anti-rotation screw. The shell 22 and the expansion sleeve 25 are connected and fixed through anti-rotation screws, so that the relative rotation of the shell 22 and the expansion sleeve 25 in the workpiece machining process is prevented, and machining errors caused by the relative rotation of the shell 22 and the expansion sleeve 25 are avoided.
Specifically, the other end of the expansion sleeve 25 is provided with an expansion sleeve opening 252, the expansion sleeve opening 252 is disposed on one end port of the housing 22, and the workpiece extends into the fixture through the expansion sleeve opening 252. The work piece stretches into inside the expansion shell 25, makes through connecting bolt screw up the expansion shell 25 is in the tight state of expanding, the outer wall of work piece with the inner wall of expansion shell 25 closely cooperates, when anchor clamps rotate, the work piece is along with anchor clamps rotate.
Specifically, the work piece cooperation chamber 253 is formed in the cover 25 that expands, work piece cooperation chamber 252 holds the work piece, the outer wall of work piece with the inner wall of cover 25 closely laminates, through cover 25 with the tight fit of work piece carries out the transmission, promptly anchor clamps 2 pass through cover 25 carries out the clamp of work piece and tightly operates, has reduced the transmission structure that the bonding is connected, protection the roughness of work piece surface, avoids the condition that the centre gripping trace and wearing and tearing appear in the work piece surface.
Further, the slot structures are uniformly distributed on the expansion sleeve openings 252, the slot structures ensure that the expansion sleeve openings 252 can be expanded and contracted under the action of tightening bolts and can be loosened and opened under the action of loosening bolts, clamping and loosening of workpieces are achieved, the slot structures deform under the extrusion of the workpieces and the shell 22 in a contracted state, air pressure in the slots is increased, and the workpieces and the expansion sleeve 25 are tightly connected based on the slot structures.
Further, a supporting cover 26 is matched on the housing 22, after the workpiece extends into the expansion sleeve 25, the workpiece is supported and fixed by the supporting cover 26, the expansion sleeve 25 and the workpiece are tightly matched by tightening the connecting bolt, a connecting through hole 261 is formed in the supporting cover 26, and the workpiece is matched and connected with the supporting cover 26 through the connecting through hole 261.
Further, the end face of the supporting cover 26 is connected with the stepped face of the largest outer circle on the workpiece, and workpiece positioning is performed through the stepped face of the largest outer circle, so that consistency of machining dimensions is ensured.
Specifically, the supporting cover 26 is fixed on the housing 22 through screw connection, the supporting cover 26 is of a taper structure, the outer diameter of the clamp 2 is reduced, the central hole of the workpiece rotating is reduced to jump when the workpiece is matched, machining accuracy is guaranteed, the supporting cover 26 can better support the workpiece and the housing 22 through the taper structure, and stress is reduced in the machining process.
Specifically, the fixture 2 is tightly matched with the outer wall of the workpiece through the inner wall of the expansion sleeve 25, so that the workpiece is fixed inside the fixture 2, the fixture 2 is fixed through expansion fastening through the expansion sleeve 25, the fixture 2 is installed on a processing station, the shell 22 is clamped through the elastic clamping jaw, and the fixture 2 is positioned by being connected with the end face of the largest outer circle on the workpiece, so that consistency of processing sizes of products is guaranteed. The stepped end face of the shaft is reduced to be connected with the clamp 2 in a matched manner, and the end face, the stepped face and the like of the shaft can be finely ground before the inner hole is finely machined in the production and machining process, so that the rough grinding process is reduced, and the production efficiency is improved.
Specifically, when the fixture 2 is used, the workpiece is stretched into the fixture 2 and screwed by the supporting cover 26, so that the expansion sleeve 25 is expanded and fixed with the workpiece. When the expansion sleeve is expanded, the gap between the connecting sleeve 24 and the base 21 is 3.5mm, the gap between the expansion sleeve 25 and the workpiece is in a range of 0.03mm to 0.05mm, so that the clamp 2 is tightly matched with the workpiece and the clamp 2 in the rotation process, and the machining precision is ensured.
Further, the movable center 23 is correspondingly connected with a center hole at one end of the workpiece, the movable center 23 props against the center hole, the jumping of the center of the product is guaranteed to be smaller than or equal to 0.05mm, and the machining accuracy is guaranteed.
The embodiment of the invention provides a shaft finish machining clamp, which is used for performing inner hole finish machining through the close fit of an expansion sleeve 25 and a workpiece, wherein the step surface of the workpiece is not subjected to extrusion force of the clamp 2 in the clamping process of the clamp 2, and the step surface of the workpiece can be subjected to finish machining before finish machining, so that the rough grinding machining step of the workpiece is reduced, the production efficiency is improved, and the production quality is ensured.
Embodiment two:
fig. 5 shows a schematic view of a rotating body structure in an embodiment of the present invention, the shaft finishing machine tool includes a machine tool main body and a shaft finishing device, the shaft finishing device is provided on the shaft finishing machine tool, the shaft finishing device includes a rotating body 1 and a fixture 2, the rotating body 1 is fixed on the shaft finishing machine tool, a plurality of stations are provided on the rotating body 1, and the fixture 2 is provided on any one station of the plurality of stations.
Specifically, the rotor 1 is round platform carousel structure, a plurality of station has been arranged to the circumference on the round platform terminal surface of rotor 1, the bottom of rotor 1 is provided with index plate 11, index plate 11 can make rotor 1 accurately rotates suitable position.
Further, a plurality of rotating motors are arranged on the inner circumference of the rotating member 1, the plurality of rotating motors are in one-to-one correspondence with the plurality of stations, and the rotating members are provided with a plurality of rotary shafts
Specifically, be provided with anchor clamps 2 on the station, the axis of anchor clamps 2 with the round platform terminal surface of rotating piece 1 is perpendicular, the lathe is vertical machine tool, and occupation of land space is little, simple structure improves production efficiency.
Specifically, the structural features and functional roles of the fixture 2 may be described with reference to the structural features and functional roles of the fixture 2 in the first embodiment, which are not described in detail herein.
Further, the assembling process of the fixture 2 is that the expansion sleeve 25 is matched with the housing 22, so that the outer wall of the expansion sleeve 25 is connected with the inner wall of the housing 22, the screw connection hole 223 on the housing 22 is correspondingly connected with the matching hole 251 on the outer wall of the expansion sleeve 25, the housing 22 and the expansion sleeve 25 are connected and fixed by the anti-rotation screw, the connecting sleeve 24 is matched with the connecting sleeve mounting cavity 222 on the housing 22, and the threaded connection portion 241 of the connecting sleeve 24 is screwed and fixed with the expansion sleeve 25.
The base 21 is matched and connected with a base mounting cavity 221 of the shell 22, the movable center 23 on the base 21 is matched and connected with a center sleeve hole 242 of the connecting sleeve 24, and the base 21 and the shell 22 are fixedly connected through screws. The support cover 26 is connected with the other end of the housing 22 in a matched manner, and is fixed by a screw, so that the assembly of the clamp 2 is completed.
Further, when the workpiece is mounted on the fixture 2, the workpiece extends into the fixture 2 from the connecting through hole 261 of the supporting cover 26, and the expansion sleeve 25 is tightly matched with the workpiece by screwing the connecting screw of the supporting cover 26 and the shell 22, the supporting cover 26 is connected with the stepped surface of the largest outer circle on the workpiece for processing and positioning of the workpiece, the movable center 23 is correspondingly connected with the central hole of the workpiece, the center runout of the workpiece is controlled, and the processing accuracy is ensured.
The embodiment of the invention provides a shaft finishing clamp and a shaft machining machine tool, wherein the shaft finishing clamp is provided with an expansion sleeve 25 and a movable center 23, the workpiece is clamped by the tight fit of the expansion sleeve 25 and the workpiece, the workpiece is centered by the movable center 23, a supporting cover 26 is arranged to be connected with the stepped surface of the maximum outer circle of the workpiece, the workpiece is positioned, the centering positioning requirement is met in the clamping process, the workpiece is not worn, and the production efficiency is improved.
In addition, the foregoing has described in detail a shaft finishing jig and a shaft machining machine tool according to embodiments of the present invention, and specific examples should be adopted herein to illustrate the principles and embodiments of the present invention, and the foregoing examples are only for aiding in understanding the method and core concept of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.

Claims (7)

1. The shaft finish machining fixture is characterized by comprising a base, a shell, a connecting sleeve, an expansion sleeve and a supporting cover;
one end of the shell is sequentially provided with a base mounting cavity, a connecting sleeve mounting cavity and an expansion sleeve mounting cavity, the expansion sleeve is accommodated in the expansion sleeve mounting cavity, and the connecting sleeve is mounted in the connecting sleeve mounting cavity;
one end of the expansion sleeve is connected with the connecting sleeve in a matching way, the other end of the expansion sleeve is arranged on the port of the other end of the shell, and the supporting cover is fixed on the other port of the shell;
the base is fixed in the base mounting cavity, and one end of the base is connected with the connecting sleeve;
a movable center mounting groove is formed in the base, and a movable center is fixed in the movable center mounting groove;
a lower pull rod is further arranged in the movable center mounting groove, one end of the movable center is fixed on the lower pull rod, and the other end of the movable center extends out of the base;
the supporting cover is fixed at the other end of the shell, a connecting through hole is formed in the supporting cover, a workpiece is connected with the supporting cover in a matched mode through the connecting through hole, and the end face of the connecting through hole is connected with the stepped face of the largest outer circle of the workpiece.
2. The shaft finishing clamp of claim 1, wherein a tip cap is provided on the base, the tip cap overlying the movable tip.
3. The shaft finishing clamp of claim 1, wherein a threaded connection is provided on the connection sleeve, and an internal thread is provided on the threaded connection;
an external thread is arranged at one end of the expansion sleeve, and the external thread is connected with the internal thread in a matched mode.
4. The shaft finishing clamp of claim 2, wherein a spring is disposed within the tip cap, one end of the spring being secured to the movable tip and the other end being secured to the base.
5. The shaft finishing clamp as claimed in claim 1, wherein a screw connection hole is formed in the wall of the casing, a matching hole is formed in the outer wall of the expansion sleeve, and the screw connection hole is correspondingly connected with the matching hole;
the shell and the expansion sleeve are fixedly connected through an anti-rotation screw.
6. The shaft machining machine tool is characterized by comprising a shaft machining clamping device, wherein the shaft machining clamping device is provided with a rotating body, and the rotating body is provided with a plurality of stations;
a shaft finishing jig as claimed in any one of claims 1 to 5 provided at any one of the stations.
7. The spindle machine tool of claim 6 wherein said rotor is of cylindrical configuration, said plurality of stations being circumferentially disposed on a circumferential sidewall of said rotor or said plurality of stations being circumferentially disposed on an upper end face of said rotor.
CN202111548076.4A 2021-12-15 2021-12-15 Shaft finish machining fixture and shaft machining machine tool Active CN114227331B (en)

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CN114227331B true CN114227331B (en) 2024-03-15

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CN116728135B (en) * 2023-07-13 2024-03-12 森泰英格(成都)数控刀具股份有限公司 Combined finish machining fixture system for inner hole of aircraft fuel nozzle and finish machining method thereof

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CN202845959U (en) * 2012-10-17 2013-04-03 重庆市星极齿轮有限责任公司 Automobile transmission input shaft hobbing tool
CN103894683A (en) * 2014-03-04 2014-07-02 秦宗正 Hobbing clamp for machining shaft gear
CN106808031A (en) * 2017-02-28 2017-06-09 西安法士特汽车传动有限公司 A kind of high accuracy quick change axle gear grinding clamp
CN207508448U (en) * 2017-11-15 2018-06-19 巴中渝翔机械制造有限公司 A kind of adjustable axle gear hobbing tooling fixture
CN207629326U (en) * 2017-11-27 2018-07-20 格特拉克(江西)传动系统有限公司 A kind of adjustable quick change tool structure of axis class gear shaping
CN108326556A (en) * 2018-04-18 2018-07-27 驭孚智能科技(上海)有限公司 A kind of automatic special machine tool of multi-station turning formula
CN208132136U (en) * 2018-05-03 2018-11-23 重庆金泰齿轮有限公司 A kind of mill axis tooth clamper
CN209157310U (en) * 2018-12-03 2019-07-26 浙江巨跃齿轮有限公司 A kind of gear grinding clamp
JP2021079492A (en) * 2019-11-20 2021-05-27 ジヤトコ株式会社 Workpiece fixing jig
CN212794540U (en) * 2020-07-07 2021-03-26 扬州璟晟鑫机械工程科技有限公司 Convenient novel thimble

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