CN106311840A

CN106311840A - Method for forming port of bellows of bullet train coupling

Info

Publication number: CN106311840A
Application number: CN201610953385.2A
Authority: CN
Inventors: 陈恩平; 王雨; 陆城燕; 张鹏飞; 王朝华; 张尚斌
Original assignee: Yanshan University
Current assignee: Yanshan University
Priority date: 2016-11-03
Filing date: 2016-11-03
Publication date: 2017-01-11
Anticipated expiration: 2036-11-03
Also published as: CN106311840B

Abstract

The invention discloses a method for forming a port of a bellows of a bullet train coupling. The method specifically comprises procedures as follows: (1) U-shaped waves are formed at one end of the port of the bellows in a hydraulic forming manner with a circular part as a basis; (2) the part, where U-shaped waves are not formed, of the port is cut off with a cutting machine; (3) the circular part is taken as a basis, and the U-shaped waves form a pressed edge through a press machine; (4) a first V-shaped right-angle wave is formed at the other end of the port of the bellows in a hydraulic forming manner with a casing part as a basis; (5) a second V-shaped right-angle wave which is close to the first V-shaped right-angle wave and is continuous and opposite is formed in a hydraulic forming manner; (6) the two V-shaped right-angle waves form a pressed edge through the press machine with the casing part as a basis, and a seal ring is tightly pressed in an annular groove of the casing part. Compared with an existing method, the method has the advantages that residual stress of the tightly pressed seal ring is increased, the sealing property of the bellows of the bullet train coupling can be improved, leakage of lubricating grease is avoided, and the service life of the bullet train coupling is prolonged.

Description

A kind of motor-car shaft coupling corrugated tube port forming method

Technical field

The present invention relates to the port forming method of a kind of corrugated tube, particularly to the port of a kind of motor-car shaft coupling corrugated tube Forming method.

Background technology

The encapsulating method of motor-car shaft coupling uses corrugated tube port to shape, and relies on the residual stress compression after shaping and seals Circle.At present, a port of motor-car shaft coupling corrugated tube, on the basis of annulus part, forms U-shaped ripple by shaped by fluid pressure mode, Flanging is formed under the effect of forcing press；Another port, on the basis of shell, forms two U-shaped ripples by shaped by fluid pressure mode, Flanging is formed under the effect of forcing press.But the residual stress that U-shaped ripple forming process makes compression sealing ring declines, and causes corrugated tube Overall sealing performance decline, cause shaft coupling internal lubrication fat to reveal, shaft coupling internal-external gear abrasion increase, ultimately cause connection Scrapping of axial organ.

Summary of the invention

For above-mentioned existing problems, it is desirable to provide a kind of port uses the forming method of V-arrangement rectangular wave, after molding The residual stress compressing sealing ring increases, and improves the sealing property of motor-car shaft coupling corrugated tube.

The object of the invention is achieved through the following technical solutions: a kind of motor-car shaft coupling corrugated tube port forming method, and it is special Levy and be, use double V-arrangement rectangular wave molding at corrugated tube port, make the residual stress of compression sealing ring increase, thus improve dynamic The sealing property of car shaft coupling corrugated tube, specifically includes following operation:

(1) corrugated tube port one end is on the basis of annulus part, forms U-shaped ripple by shaped by fluid pressure mode；

(2) with guillotine, the port section not forming U-shaped ripple is cropped；

(3) on the basis of annulus part, U-shaped ripple is made to form flanging one by forcing press；

(4) the corrugated tube port other end is on the basis of outer casing member, forms first V-arrangement right angle by shaped by fluid pressure mode Ripple；

(5) by shaped by fluid pressure mode, immediately first V-arrangement rectangular wave forms the most opposed second V-arrangement rectangular wave；

(6) on the basis of outer casing member, make two V-arrangement rectangular waves form flanging two by forcing press, sealing ring is pressed on In the cannelure of outer casing member.

Shaped by fluid pressure mode described in above-mentioned operation is to utilize high-pressure pump to inject high-pressure medium in pipe, and tube wall is relatively Under high pressure medium effect, pipe can gradually form projection, last swelling pressure molding in the middle of the chuck of two, left and right.Just one-step forming After, axially giving an axial force at pipe, compression pipe, to required final lengths, removes process equipment, just can get institute The corrugated tube needed.

Compared with existing process, forming method of the present invention can make motor-car shaft coupling corrugated tube have good seal performance, Avoid the advantage that grease leaks, thus extend the service life of motor-car shaft coupling.

Accompanying drawing explanation

Fig. 1 is process flow chart of the present invention.

Fig. 2 is operation 1 schematic diagram of the present invention.

Fig. 3 is operation 2 schematic diagram of the present invention.

Fig. 4 is operation 3 schematic diagram of the present invention.

Fig. 5 is operation 4 schematic diagram of the present invention.

Fig. 6 is operation 5 schematic diagram of the present invention.

Fig. 7 is operation 6 schematic diagram of the present invention.

Fig. 8 is the motor-car shaft coupling corrugated tube schematic diagram of molding.

Fig. 9 is the residual stress comparison diagram after the present invention and prior art molding.

Detailed description of the invention

The present invention will be further described below in conjunction with the accompanying drawings:

One motor-car shaft coupling corrugated tube port forming method of the present invention, as it is shown in figure 1, be made up of six procedures altogether.Tool Body operation is as follows:

Operation 1: corrugated tube port one end, on the basis of annulus part 1, by shaped by fluid pressure mode, forms U-shaped with U-shaped grinding tool Ripple 2, as shown in Figure 2.

Operation 2: the port section 3 not forming U-shaped ripple is cropped, as shown in figures 2-3 with guillotine.

Operation 3: on the basis of annulus part 1, makes U-shaped ripple form flanging 1, as shown in Figure 4 by forcing press.

Operation 4: the corrugated tube port other end with outer casing member 5 (sealing ring 11 swelling is in the cannelure of outer casing member 5) as base Standard, forms first V-arrangement rectangular wave 6 by shaped by fluid pressure mode V-arrangement grinding tool, as shown in Figure 5.

Operation 5: by shaped by fluid pressure mode, immediately the port position 7 of first V-arrangement rectangular wave 6 V-arrangement grinding tool is formed even Continuous second opposed V-arrangement rectangular wave 8, as shown in Figure 6.

Operation 6: on the basis of outer casing member 5, makes two V-arrangement rectangular waves form flanging 29, by sealing ring 11 by forcing press It is pressed in the cannelure of outer casing member 5.

Through above operation, the port of motor-car shaft coupling corrugated tube 10 ultimately forms.

As it is shown in figure 9, draw through finite element analysis, motor-car shaft coupling corrugated tube port uses the molding of double V-arrangement rectangular wave Method, its residual stress is far longer than in prior art the method that its port uses U-shaped ripple, because compressing the power of sealing ring by molding After residual stress, so port uses the forming method of V-arrangement rectangular wave to make the sealing property of motor-car shaft coupling corrugated tube more preferable.

Claims

1. a motor-car shaft coupling corrugated tube port forming method, it is characterised in that use double V-arrangement rectangular wave at corrugated tube port Molding, makes the residual stress of compression sealing ring increase, thus improves the sealing property of motor-car shaft coupling corrugated tube, specifically include as Lower operation:

(2) with guillotine, the port section not forming U-shaped ripple is cropped；

(4) the corrugated tube port other end is on the basis of outer casing member, forms first V-arrangement rectangular wave by shaped by fluid pressure mode；

(6) on the basis of outer casing member, make two V-arrangement rectangular waves form flanging two by forcing press, sealing ring is pressed on shell In the cannelure of part.