CN110935920A

CN110935920A - Quick tool changing device is milled to differential mechanism casing profile

Info

Publication number: CN110935920A
Application number: CN201911388516.7A
Authority: CN
Inventors: 秦政琪; 邹爱丽; 张瑜; 刘云雷
Original assignee: Shenyang Aerospace University
Current assignee: Shenyang Aerospace University
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-03-31

Abstract

The invention relates to a quick tool changing device for milling of an inner molded surface of a differential shell, and belongs to the field of milling machining. Comprises a tool changing mechanism, a cutter body and a milling cutter bar. The tool changing mechanism comprises a support, a tool bit positioning seat, a pull rod A, a pull rod B and a bottom support. The pull rod A is fixed on the bottom support through a pin shaft, and the bottom support is fixed on the support through a bolt; the milling cutter bar is in threaded connection with the cutter body; the upper part of the cutter body is an arc-shaped cutting edge, the middle of the arc-shaped cutting edge is provided with a circular through hole, the lower half part of the through hole is provided with threads, and the waist-shaped boss at the lower half part of the cutter body is fixed with the right end part of the cutter head positioning seat and the cutter rod positioner. By applying the milling device, the inner molded surface of the differential shell can be milled by a common milling machine, the tool changing speed is high, the processing precision is high, the processing cost is reduced, and the working efficiency is improved. Has good popularization prospect.

Description

Quick tool changing device is milled to differential mechanism casing profile

Technical Field

The invention belongs to the field of milling machining, and particularly relates to a quick tool changing device for milling an inner molded surface of a differential shell, which is mainly applied to a common milling machine for machining parts such as an automobile differential and the like.

Background

The differential is arranged for adjusting the rotation speed difference of the left wheel and the right wheel, the automobile differential mainly eliminates the mechanical interference phenomenon caused by the inconsistent rotation speeds of the left wheel and the right wheel when an automobile turns, and if no differential exists, the mechanical damage is caused by the inconsistent rotation speeds of the left wheel and the right wheel. Differentials are an indispensable component in automobiles. However, the processing of the inner profile of the differential housing is difficult, the prior art processes the inner profile by a special milling machine and a centrifugal milling cutter, and the special milling machine has high manufacturing cost and few functions and can only be used for processing the inner profile. The problems of low processing speed, low processing precision, high rejection rate, high price of the differential mechanism and the like exist.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and designs an improved quick tool changer, in particular to a quick tool changer capable of milling the inner molded surface of a differential shell on a common milling machine. By using the device, the processing of the inner profile of the differential shell can be directly finished by a common milling machine, thereby reducing the cost and improving the working efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme: a quick tool changing device for milling of an inner molded surface of a differential shell comprises a tool changing mechanism, a cutter body and a milling cutter rod. The tool changing mechanism comprises a support, a tool bit positioning seat, a pull rod and a bottom support.

Furthermore, the pull rod is fixed on a bottom support through a pin shaft, the bottom support is fixed on the support through a bolt, a rotating shaft is sleeved on the pull rod A, a rotating sleeve is fixed with the rotating shaft, and the rotating sleeve is connected with the pull rod B through a rolling bearing. The upper half part of the support is a cylinder with a sliding groove, the cylindrical pull rod penetrates through the sliding groove to enter the cylinder of the support and is connected with a check ring through a circular groove, and the check ring is sleeved on the cutter head positioning seat and is locked and positioned through a nut and a gasket. The tool bit positioning seat slides in the support, and the sliding stroke is limited by the check ring, the blocking rings at the two ends and the positioning rings. Through applying load on the pull rod, the pull rod can anticlockwise clockwise rotate, drive the pivot simultaneously and move to the left and right sides, the commentaries on classics cover drives the pull rod and slides to the left and right sides in the spout of support, the tool bit positioning seat slides in the drum and drives the tool bit locator and remove simultaneously, it is spacing through blockking up when the tool bit positioning seat removes the left end, it is spacing through the position circle when reacing the right-hand member, install the spring that links to each other with the commentaries on classics cover on the pull rod simultaneously and play the effect of auto-lock, prevent that the tool bit positioning seat from reacing after pointing the location and sliding again, tool bit positioning seat lower part has the.

The lower end of the milling cutter bar is provided with threads, the upper part of the cutter body is an arc-shaped cutting edge, the middle of the cutting edge is provided with a circular through hole, the lower half part of the through hole is provided with threads, the waist-shaped boss at the lower half part of the cutter body is fixed with the right end part of the cutter head positioning seat and the cutter bar positioner, the milling cutter bar is in threaded connection with the cutter body,

the beneficial effects and characteristics of the invention

The differential mechanism shell inner surface machining device is simple and reasonable in structure, and solves the problems that in the prior art, the machining of the inner surface of the differential mechanism shell needs to be carried out by a special milling machine, the special milling machine is high in manufacturing cost and few in functions, the special milling machine can only be used for machining the inner surface, and the differential mechanism is high in price due to low machining speed, low machining precision and high rejection rate. By applying the milling device, the inner molded surface of the differential shell can be milled by a common milling machine, the tool changing speed is high, the processing precision is high, the processing cost is reduced, and the working efficiency is improved. Has good popularization prospect.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a sectional view of fig. 1.

Fig. 3 is a view of the cutter body inside the differential housing.

Fig. 4 is a schematic view of the structure of the cutter body.

Fig. 5 is a top view of fig. 4.

Shown in the figure: blocking 1; a support 2; a nut 3; a gasket 4; a retainer ring 5; a tool bit positioning seat 6; a positioning ring 7; a milling cutter bar 8; a cutter body 9; a cutter bar positioner 10; a differential case inner profile 11; a pull rod A12; a spring 13; a rotating shaft 14; a rotating sleeve 15; a rolling bearing 16; a pull rod B17; a bottom support 18.

Detailed description of the preferred embodiments

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1-5, a differential housing inner surface milling quick tool changer comprises a tool changing mechanism, a cutter body and a milling cutter bar.

The tool changing mechanism comprises a support 2 and a tool bit positioning seat 6, and the tool bit positioning seat 6 slides in the support 2. The concrete structure is shown in fig. 1-3, a pull rod 12 is fixed on a bottom support 18 through a pin shaft, the bottom support 18 is fixed on a support 2 through a bolt, a rotating shaft 14 is sleeved on the pull rod 12, a rotating sleeve 15 is fixed with the rotating shaft 14, and the rotating sleeve 15 is connected with a pull rod 17 through a rolling bearing 16. The upper half part of the support 2 is a cylinder with a sliding groove, a cylindrical pull rod B17 penetrates through the sliding groove to enter the cylinder of the support 2 and is connected with a check ring 5 through a circular groove, the check ring 5 is sleeved on the cutter head positioning seat, and locking and positioning are realized through a nut 3 and a gasket 4. The cutter head positioning seat 6 slides in the support 2, and the sliding stroke is limited by the check ring 5, the plug 1 at the two ends and the positioning ring 7. Through applying load on pull rod A12, pull rod 12 can anticlockwise clockwise rotation, drive pivot 14 simultaneously and remove to the left and right sides, swivel sleeve 15 drives pull rod B17 and slides from side to side in the spout of support 2, tool bit positioning seat 6 slides in the drum and drives tool bit locator 10 and remove from side to side simultaneously, it is spacing through blockking up 1 when moving the left end at tool bit positioning seat 6, it is spacing through position ring 7 when reacing the right-hand member, install simultaneously and play the effect of auto-lock with the spring 13 that swivel sleeve 14 links to each other on pull rod A12, prevent that tool bit positioning seat 6 from reacing the designated position and then sliding again.

As shown in the figure 1-2, the lower part of the tool bit positioning seat 6 is provided with a groove, and the lower end of the positioning ring 7 is provided with a boss which is matched with the groove to prevent the tool bit positioning seat from rotating.

The specific structure of the cutter body and the milling cutter bar is shown in fig. 1-5, the milling cutter bar 8 is connected to a milling machine, can rotate and move up and down under the driving of the milling machine, and the lower end of the milling cutter bar 8 is provided with threads. The upper part of the cutter body 9 is an arc-shaped cutting edge, the middle of the arc-shaped cutting edge is provided with a circular through hole, the lower half part of the through hole is provided with threads, and a waist-shaped boss at the lower half part of the cutter body 9 is fixed with the right end part of the cutter head positioning seat 6 and the head-to-head positioner 10. When the milling cutter bar 8 is driven by the milling machine, the milling cutter bar 8 is screwed downwards into the cutter body 9, the milling cutter bar 8 and the cutter body 9 are fixed through threads of the milling cutter bar 8 and the cutter body 9, the pull rod 12 is pulled to enable the cutter head positioning seat 6 and the cutter head positioner 10 to move leftwards and be separated from the cutter body 9, the milling cutter bar 8 and the cutter body 9 are driven by the milling machine to move upwards to mill the inner molded surface of the differential mechanism shell 11, after milling is completed, the milling cutter bar 8 and the cutter body 9 move downwards to the original position of the cutter body 9, the pull rod 12 is pulled again to enable the cutter head positioning seat 6 and the cutter head positioner 10 to return to the original position, and the milling cutter. The milling cutter arbor 8 is driven by the milling machine to rotate reversely and is separated from the cutter body 9 through threads, the milling cutter arbor 8 moves upwards to be away from the differential shell 11, the cutter body 9 moves out of the differential shell 11 through the pull rod A12 under the drive of the cutter head positioning seat 6, and one-time milling and cutter changing are completed.

The above description is only for reference to an embodiment of the present invention and should not be taken as limiting the invention, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a quick tool changing device is milled to differential mechanism casing internal profile which characterized in that: the cutter changing mechanism comprises a support, a cutter head positioning seat, a pull rod A, a pull rod B and a bottom support; the pull rod A is fixed on the bottom support through a pin shaft, and the bottom support is fixed on the support through a bolt; the milling cutter is characterized in that a milling cutter bar is connected with a cutter body, a rotating shaft is sleeved on a pull rod A, a rotating sleeve is fixed with the rotating shaft, the rotating sleeve is connected with a pull rod B through a rolling bearing, the upper half part of a support is a cylinder with a sliding groove, a cylindrical pull rod penetrates through the sliding groove to enter the cylinder of the support and is connected with a retaining ring through a circular groove, the retaining ring is sleeved on a cutter head positioning seat, locking and positioning are achieved through a nut and a gasket, the cutter head positioning seat slides inside the support, sliding travel is limited through the retaining ring and a positioning ring at two ends, a spring is installed on the pull rod and connected with the rotating sleeve, a groove.

2. The differential housing inner profile milling quick tool changer of claim 1, wherein: the lower end of the milling cutter bar is in threaded connection with the cutter body, the upper part of the cutter body is an arc-shaped cutting edge, the middle of the upper part of the cutter body is provided with a circular through hole, the lower half part of the through hole is provided with threads, and the lower half part of the through hole is fixed with the right end part of the cutter head positioning seat and the cutter bar positioner through a waist-shaped.