CN201423409Y

CN201423409Y - Die for manufacturing set piston of hydraulic brake pump

Info

Publication number: CN201423409Y
Application number: CN2009201197647U
Authority: CN
Inventors: 庄海君
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-05-12
Filing date: 2009-05-12
Publication date: 2010-03-17
Anticipated expiration: 2019-05-12

Abstract

The utility model relates to a die for manufacturing a set piston of a hydraulic brake pump. The die is provided with an upper die sleeve, a lower die sleeve, a punch head, a cavity die and a jackingrod for pushing out workpiece in the cavity die. The punch head comprises a first punch head and a second punch head; the cavity die comprises a first cavity die and second cavity die; the mould cavity of the first cavity die is matched with the outline of the upper part of a semi-manufactured piston; the first punch head takes the shape of a plate body; the end surface of the first punch head opposite to the first cavity die is matched with the opening part of the mould cavity of the first cavity die; the mould cavity of the second cavity die is formed by additionally arranging a cylindricalcavity which is matched with the outline of the lower part of the semi-manufactured piston is arranged at the lower part on the basis of the first cavity; the second punch head takes the shape of a rod body; the external diameter and the part with the length of exposed out of an upper die sleeve of the second punch head are respectively matched with the internal diameter and depth of a cylindricalconcave hole at one end of the piston; an opening is respectively formed at the bottom parts of the mould cavities first cavity die and the second cavity die; and the jacking rod can be pressed against the workpieces in the mould cavities through the openings. Manufacturing the piston by the die provided by the utility model can save material, simplify the procedure and reduce the manufacturing cost.

Description

Make hydraulic braking pump and adjust the piston mould

Technical field

The utility model relates to a kind of mould, more particularly relates to a kind of mould that hydraulic braking pump is adjusted piston that is used for making.

Background technology

It is the automobile common components that the hydraulic vehicle braking pump is adjusted piston, and the profile of this piston is the cylinder that an outside has step and annular groove, and one is processed with cylindrical shrinkage pool.The moulding of this piston at present will be passed through several procedures, comprising: 1. Cutting stick is become required blank; 2. above-mentioned blank in high-frequency heating is placed on the die cavity of counterdie; 3. the patrix drift on the forcing press moves downward, and the blank extrusion modling is made stair-stepping semi-finished product, and this half-finished length is basic consistent with the length of finished product piston; 4. on semi-finished product, process the annular groove of cylindrical shrinkage pool, outside etc. again, make the finished product piston after the finishing.Therefore as can be seen, be processed into the finished product piston of required size, the length of its blank must be greater than the length of finished product piston, and general finished product piston length is 46mm, and its charge length needs 64～65mm from above-mentioned operation.Making of a cylindrical shrinkage pool of piston is not to finish by the mould extruding at present in addition, but forms by boring.Therefore the defective that adopts existing method to process this piston maximum is consumptive material, processed complex.

Summary of the invention

Technical problem to be solved in the utility model is that a kind of mould that hydraulic braking pump is adjusted piston that is used for making is provided at the prior art present situation, make the cylindrical shrinkage pool of one in piston directly utilize the mould extrusion modling, with significantly reduce materials, technology is simpler.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: make hydraulic braking pump and adjust the piston mould, the push rod that it has upper and lower die sleeve, drift, die and is used for the workpiece in the die is ejected, described drift is contained on the Upper Die-sleeve, on the die shank that described Upper Die-sleeve is connected with the outside links to each other; Described die is located on the fixture, and fix by lower die-sleeve, described push rod is fixed on the suspension arm-tie, the suspension arm-tie is connected with die shank by pull bar, it is characterized in that described drift comprises first drift and second drift, described accordingly die has first die and second die, and the profile on the die cavity of described first die and piston top is complementary, described first drift is the plate body shape, and the die cavity oral area of itself and the first die opposing end faces and first die matches; The die cavity of described second die is to set up a cylindrical cavity that matches with the piston low profile on the basis of first die cavity in the bottom, described second drift is a body of rod shape, its external diameter and expose to the outer length of Upper Die-sleeve and match with the internal diameter and the degree of depth of the cylindrical shrinkage pool of one in piston respectively; Cavity bottom in first die and second die all has opening, and described push rod can offset with the workpiece in the die cavity by opening.

Compared with prior art, advantage of the present utility model is: adopt this mould to come machining piston, saved material (can save 1/3 material), simplified operation, thereby can reduce production costs greatly.

Description of drawings

Fig. 1 adopts the structural representation of first drift and first die for the utility model embodiment.

Fig. 2 adopts the structural representation of second drift and second die for the utility model embodiment.

Fig. 3 is the semi-finished product piston schematic diagram after the extruding of first drift.

Fig. 4 is the semi-finished product piston piston schematic diagram after the second drift punching press again of Fig. 3.

Fig. 5 is the schematic diagram of finished product piston.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As Fig. 1, shown in Figure 2, the utility model is made hydraulic braking pump adjustment piston has two different drifts and two different dies with mould, specifically include Upper Die-sleeve 2, lower die-sleeve 5, first drift 3, second drift 12, first die 10, second die 13 and push rod 8 etc., described first drift 3 and second drift 12 all can be installed on the Upper Die-sleeve 2, wherein first drift 3 is the plate body shape, die cavity 11 oral areas of itself and first die, 10 opposing end faces and first die 10 match, second drift 12 is a body of rod shape, its external diameter and expose to the outer length of Upper Die-sleeve and match with the internal diameter and the degree of depth of the cylindrical shrinkage pool 16 of 15 1 in piston respectively.On die shank 1, die shank 1 is connected with forcing press described Upper Die-sleeve 2 by thread connection.

Described first die 10 and second die 13 all can be contained on the mould bases 9, and mould bases 9 fixes by bolt and workbench 6.Be provided with internal and external screw thread between described lower die-sleeve 5 and the mould bases 9, both are integral by thread connection.Described first die 10 be provided with face with above-mentioned first drift 3 and with the corresponding to die cavity 11 of semi-finished product piston top profile, and opening is arranged in the cavity bottom center.The die cavity of described second die 13 is to set up a cylindrical cavity 14 that matches with semi-finished product piston low profile on the basis of first concave die cavity in the bottom.

Described push rod 8 is positioned at workbench 6 belows, is fixed on the arm-tie 7, and arm-tie 7 suspends and is connected on two pull bars 4, and two pull bars 4 link to each other with die shank 1.Die shank 1, push rod 8 and arm-tie 7 pump under the effect of forcing press like this, the workpiece in the die are outwards ejected by push rod 8 with this.

Adopt above-mentioned mould to come the process of compaction piston as follows: at first according to the specification requirement of piston, round steel is cut into required stock, the length of this blank is at 43～44mm, but is the 46mm piston with its factory length; Then above-mentioned blank is heated on high frequency heating machine, and be heated to the aglow state in whole blank place, make the easy extrusion modling of blank; Blank after will heating is then put into first die, under the effect of die shank at forcing press, first drift, pull bar, arm-tie and push rod move vertically downward, by first drift blank are pressed into and finish putting in place of semi-finished product piston top profile physical dimension in the die cavity, as shown in Figure 3; Under the effect of forcing press, die shank drives first drift and returns again, drives pull bar, arm-tie and push rod simultaneously and moves upward, and push rod enters in the opening of first die bottom, and when moving to top dead centre, push rod outwards ejects the workpiece in the die; To put into second die after the above-mentioned workpiece heating again, the same die shank of working as is under the effect of forcing press, second drift, pull bar, arm-tie and push rod move vertically downward, extrude cylindrical shrinkage pool by second drift, and the raw material that squeezes out is pressed in the cylindrical cavity, so just finish putting in place of semi-finished product piston shrinkage pool and low profile physical dimension, as shown in Figure 4; Under the effect of forcing press, die shank drives second drift and returns again, drives pull bar, arm-tie and push rod simultaneously and moves upward, and push rod enters in the opening of second die bottom, and when moving to top dead centre, push rod outwards ejects the workpiece in the die; Again this semi-finished product piston is carried out turning, finishing processing at last, the finished product piston shown in 5 promptly charts.

Claims

1, a kind of manufacturing hydraulic braking pump is adjusted the piston mould, the push rod that it has upper and lower die sleeve, drift, die and is used for the workpiece in the die is ejected, and described drift is contained on the Upper Die-sleeve, on the die shank that described Upper Die-sleeve is connected with the outside links to each other; Described die is located on the fixture, and fix by lower die-sleeve, described push rod is fixed on the suspension arm-tie, the suspension arm-tie is connected with die shank by pull bar, it is characterized in that: described drift comprises first drift and second drift, described accordingly die has first die and second die, the profile on the die cavity of described first die and semi-finished product piston top is complementary, described first drift is the plate body shape, and the die cavity oral area of itself and the first die opposing end faces and first die matches; The die cavity of described second die is to set up a cylindrical cavity that matches with semi-finished product piston low profile on the basis of first die cavity in the bottom, described second drift is a body of rod shape, its external diameter and expose to the outer length of Upper Die-sleeve and match with the internal diameter and the degree of depth of the cylindrical shrinkage pool of one in piston respectively; Cavity bottom in first die and second die all has opening, and described push rod can offset with the workpiece in the die cavity by opening.