CN106903251B - The long sleeve metal parts cold upsetting production technique of through-hole - Google Patents

The long sleeve metal parts cold upsetting production technique of through-hole Download PDF

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Publication number
CN106903251B
CN106903251B CN201710099658.6A CN201710099658A CN106903251B CN 106903251 B CN106903251 B CN 106903251B CN 201710099658 A CN201710099658 A CN 201710099658A CN 106903251 B CN106903251 B CN 106903251B
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CN
China
Prior art keywords
hole
car
cold upsetting
squeezed
metal parts
Prior art date
Application number
CN201710099658.6A
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Chinese (zh)
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CN106903251A (en
Inventor
吴修远
吴强云
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江苏天毅冷镦股份有限公司
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Priority to CN201710099658.6A priority Critical patent/CN106903251B/en
Publication of CN106903251A publication Critical patent/CN106903251A/en
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Publication of CN106903251B publication Critical patent/CN106903251B/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/10Piercing billets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations

Abstract

A kind of long sleeve metal parts cold upsetting production technique of through-hole, it is characterized in that the following steps are included: blanking;Shaping;Squeeze bar upsetting ball;Squeezing bushing molding;Counterbore;Squeeze tubule sleeve forming;Squeezing through-hole.The present invention has been concentrated use in strongly tensile, pre- upsetting ball, has squeezed the multiple technologies such as perforation, and forms the complete machining technique that the long sleeve metal parts of this through-hole is processed on multistage cold former.The invention of this moulding process makes the production of the long sleeve metal parts of through-hole can be with: 1, high-volume efficiently production reaches one second product;2,50% or more raw material are saved;3, the different two-part concentricitys of precision, especially thickness are improved.

Description

The long sleeve metal parts cold upsetting production technique of through-hole

Technical field

The present invention relates to technical fields of mechanical processing, are a kind of long sleeve metal parts invention production technologies of through-hole.

Background technique

As shown in Figure 1, Figure 2, the long sleeve metal parts of through-hole is now widely used in the brake line of automobile, motorcycle industry In hydraulic flexible pipe joint in.

The long sleeve metal parts production of through-hole, is primarily now two kinds of processing methods:

One, it is machined, by complete machining forming product of virgin metal raw material (see Fig. 1).

Two, half cold-heading, half cutting technology, with wire rod through multistage cold former cold-heading at semi-finished product (see Fig. 2), then It carries out being cut into shaped article.

Both are processed as the processing method being widely used now, but suffer from machining working hour expense height, waste of material It is more, the not high defect of precision.

Summary of the invention

The purpose of the present invention is to provide a kind of long sleeve metal parts invention production technology of through-hole, production works of the invention Skill is entirely the creative invention being concentrated use in using several multi-station cold-heading molding technologies, fully achieves this through-hole Long sleeve metal parts without machining.

The technical scheme is that

A kind of long sleeve metal parts cold upsetting production technique of through-hole, comprising the following steps:

Step 1) blanking: production cylinder blank;

Step 2) shaping: cylinder blank is squeezed out into fillet by the first cold upsetting die of car;

Step 3) squeezes bar upsetting ball: cylinder blank with rounded corners being put into the second cold upsetting die of car and is squeezed, is squeezed out The thinner connecting rod of diameter, and the upsetting spherical shoulder being relatively large in diameter, both ends are squeezed out in head cavity hole and tail portion with rushing stick respectively Lumen pore;Lumen orifice from-inner-to-outer in head includes central lumen hole, terraced steps hole and rim of a cup stepped hole out;

The molding of step 4) squeezing bushing: the workpiece that step 3 is obtained is put into third cold upsetting die of car and squeezes, by upsetting ball Shape shoulder presses are deformed into cylindrical shoulder;Rim of a cup stepped hole is squeezed and deformed cup-shaped pipe sleeve;

Step 5) counterbore: the workpiece that step 3 is obtained is put into the 4th cold upsetting die of car and squeezes, and increases tail portion with stick is rushed The depth of lumen orifice;

Step 6) squeezes tubule sleeve forming: step 5 being obtained workpiece is put into the 5th cold upsetting die of car to squeeze, by diameter Thinner connecting rod is squeezed into hollow bush, and only remaining centre is a bit of has no through;

Step 7) squeezing through-hole: obtaining workpiece for step 6 and be put into the 6th cold upsetting die of car to perforate, get through tubule set, What is had no through partially changes into waste material discharge, the lumen therethrough after obtaining punching.

The step 1) includes the process for the extra extruded stock punching removal for generating squeezing action into step 7).

The beneficial effects of the present invention are:

Production technology of the invention, whole process are to form Technology design with multistation metal cold-heading deformation, have been used cold Highest forming technique means in upsetting technology, it is determined that a whole set of correctly production change of this metal parts metal fluid modification Shape mode and completion size.

The super extruding puncturing technique wherein completed, is that common process for machining is impossible.Mach extruding The limit of perforation is that aperture ratio is no more than 4 times, and aperture ratio reaches 12-14 times in present invention process.And realize this metal The part technique that continuous production is processed on multistage cold former.

Cold upsetting production technique of the invention makes the production of the long sleeve metal parts of through-hole can be with:

1, high-volume efficiently production, reaches one second product;

2,50% or more raw material are saved;

3, precision is improved, the precision of existing machining is in positive and negative 0.2mm or so, using cold upsetting production work of the invention Skill machining accuracy can be within 0.05mm, and precision improves 4 times.

Detailed description of the invention

Fig. 1 is the machining sketch chart of the long sleeve metal parts of through-hole using machining of the prior art.

Fig. 2 is the machining sketch chart of the long sleeve metal parts of through-hole of use half cold-heading, half machining of the prior art.

Fig. 3 is the structural schematic diagram of cylinder blank of the invention.

Fig. 4 is the structural schematic diagram of the fillet of cylinder blank of the invention.

Fig. 5 is the structural schematic diagram of the workpiece of the invention after the processing of the second cold upsetting die of car.

Fig. 6 is the structural schematic diagram of the workpiece of the invention after the processing of third cold upsetting die of car.

Fig. 7 is the structural schematic diagram of the workpiece of the invention after the processing of the 4th cold upsetting die of car.

Fig. 8 is the structural schematic diagram of the workpiece of the invention after the processing of the 5th cold upsetting die of car.

Fig. 9 is the structural schematic diagram of the waste material of the workpiece of the invention after the processing of the 6th cold upsetting die of car and punching.

In figure: 1 being cylinder blank, 2 be fillet, 3 be connecting rod, 4 be upsetting spherical shoulder, 5 be tail portion lumen orifice, 6 be cup Shape pipe sleeve, 7 be the part having no through, 8 be lumen therethrough after punching, 9 be head cavity hole, 10 be tail portion lumen orifice, 11 be Cylindrical shoulder, 90 central lumen holes, 91 be terraced steps hole, 92 be rim of a cup stepped hole.

Specific embodiment

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

Such as Fig. 3 to Fig. 9, a kind of long sleeve metal parts cold upsetting production technique of through-hole, it is characterized in that the following steps are included:

Step 1 blanking: production cylinder blank 1;

Fig. 3 is the structural schematic diagram of cylinder blank of the invention.

Step 2 shaping: cylinder blank 1 is squeezed out into fillet 2 by the first cold upsetting die of car;

Fig. 4 is the structural schematic diagram of the fillet of cylinder blank of the invention.

Step 3 squeezes bar upsetting ball: the cylinder blank 1 with fillet 2 being put into the second cold upsetting die of car and is squeezed, is squeezed out The thinner connecting rod 3 of diameter, and the upsetting spherical shoulder 4 being relatively large in diameter, both ends squeeze out head cavity hole 9 and tail portion with rushing stick respectively Lumen orifice 5;Lumen orifice 9 from-inner-to-outer in head includes central lumen hole 90, terraced steps hole 91 and rim of a cup stepped hole 92 out;

Fig. 5 is the structural schematic diagram of the workpiece of the invention after the processing of the second cold upsetting die of car.

The molding of step 4 squeezing bushing: the workpiece that step 3 is obtained is put into third cold upsetting die of car and squeezes, by upsetting ball Shape shoulder 4 is squeezed and deformed into cylindrical shoulder 11;Rim of a cup stepped hole 92 is squeezed and deformed cup-shaped pipe sleeve 6;

Fig. 6 is the structural schematic diagram of the workpiece of the invention after the processing of third cold upsetting die of car.

Step 5 counterbore: the workpiece that step 3 is obtained is put into the 4th cold upsetting die of car and squeezes, and increases tail portion with stick is rushed The depth of lumen orifice 5;

Fig. 7 is the structural schematic diagram of the workpiece of the invention after the processing of the 4th cold upsetting die of car.

Step 6 squeezes tubule sleeve forming: step 5 being obtained workpiece is put into the 5th cold upsetting die of car to squeeze, by diameter Thinner connecting rod 3 is squeezed into hollow bush, and only remaining centre is a bit of has no through;

Fig. 8 is the structural schematic diagram of the workpiece of the invention after the processing of the 5th cold upsetting die of car.

Step 7 squeezing through-hole: it step 6 is obtained workpiece is put into the 6th cold upsetting die of car to perforate, get through tubule set, do not have There is the part 7 of perforation to become waste material discharge, the lumen therethrough 8 after obtaining punching;

Fig. 9 is the structural schematic diagram of the workpiece of the invention after the processing of the 6th cold upsetting die of car.

It also include the process for the extra extruded stock polishing removal that squeezing action generates in above-mentioned steps.

The above-described embodiments are merely illustrative of preferred embodiments of the present invention, not to structure of the invention Think and range is defined, under the premise of not departing from design concept of the present invention, ordinary engineering and technical personnel is to this hair in this field The all variations and modifications that bright technical solution is made should all fall into protection scope of the present invention, the claimed skill of the present invention Art content is all described in the claims.

Claims (2)

1. a kind of long sleeve metal parts cold upsetting production technique of through-hole, it is characterized in that the following steps are included:
Step 1) blanking: production cylinder blank (1);
Step 2) shaping: cylinder blank (1) is squeezed out into fillet (2) by the first cold upsetting die of car;
Step 3) squeezes bar upsetting ball: the cylinder blank (1) with fillet (2) being put into the second cold upsetting die of car and is squeezed, is squeezed The thinner connecting rod of diameter (3) out, and the upsetting spherical shoulder (4) being relatively large in diameter, both ends squeeze out head cavity hole with rushing stick respectively (9) and tail portion lumen orifice (5);Out head lumen orifice (9) from-inner-to-outer include central lumen hole (90), terraced steps hole (91) and Rim of a cup stepped hole (92);
The molding of step 4) squeezing bushing: the workpiece that step 3 is obtained is put into third cold upsetting die of car and squeezes, by upsetting spherical shape shoulder Portion (4) is squeezed and deformed at cylindrical shoulder (11);Rim of a cup stepped hole (92) are squeezed and deformed cup-shaped pipe sleeve (6);
Step 5) counterbore: obtaining workpiece for step 4 and be put into the 4th cold upsetting die of car to squeeze, and increases tail portion lumen orifice with stick is rushed (5) depth;
Step 6) squeezes tubule sleeve forming: it step 5 is obtained workpiece is put into the 5th cold upsetting die of car to squeeze, diameter is thinner Connecting rod (3) be squeezed into hollow bush, it is only remaining intermediate a bit of to have no through;
Step 7) squeezing through-hole: it step 6 is obtained workpiece is put into the 6th cold upsetting die of car to perforate, get through tubule set, do not have The part (7) of perforation becomes waste material discharge, the lumen therethrough (8) after obtaining punching.
2. the long sleeve metal parts cold upsetting production technique of through-hole according to claim 1, it is characterised in that the step 1) To the process in step 7) including the extra extruded stock punching removal for generating squeezing action.
CN201710099658.6A 2017-02-23 2017-02-23 The long sleeve metal parts cold upsetting production technique of through-hole CN106903251B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710099658.6A CN106903251B (en) 2017-02-23 2017-02-23 The long sleeve metal parts cold upsetting production technique of through-hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710099658.6A CN106903251B (en) 2017-02-23 2017-02-23 The long sleeve metal parts cold upsetting production technique of through-hole

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CN106903251B true CN106903251B (en) 2019-02-12

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109226616B (en) * 2017-07-11 2020-06-02 赖传荣 Method for manufacturing long sleeve
CN108080546A (en) * 2017-12-07 2018-05-29 陕西宏远航空锻造有限责任公司 A kind of forming method of other than ring type aluminium forging through hole
CN109434005A (en) * 2018-08-16 2019-03-08 江苏天毅冷镦股份有限公司 A kind of cold upsetting production technique of external screw thread vehicle brake pipe joint
CN109794571A (en) * 2019-02-13 2019-05-24 苏州誉高紧固系统有限公司 A kind of cold extrusion stretching production technology of T-type sleeve
CN109773111B (en) * 2019-02-25 2020-06-23 无锡苏明达科技有限公司 Cold heading process of automobile exhaust pipe connecting flange
CN109894568B (en) * 2019-03-08 2020-04-14 宁波安拓实业有限公司 Manufacturing method of sleeve for welding automobile chassis
CN110193577B (en) * 2019-07-02 2020-09-01 上海裴椒汽车部件制造有限公司 Cold heading process for overcoming easy deformation of hard pipe joint

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101564751A (en) * 2009-04-28 2009-10-28 巨力索具股份有限公司 Technique for forging electric upsetting steel tie rod cap
RU2479375C1 (en) * 2011-11-16 2013-04-20 Открытое акционерное общество Завод "Красное знамя" Device for upsetting collars at core blanks
JP2013240819A (en) * 2012-05-22 2013-12-05 Kotani:Kk Method and device for manufacturing bearing material
CN104399862B (en) * 2014-07-02 2017-01-18 江苏天毅冷镦股份有限公司 Technology for producing spherical metal joint
CN105081188B (en) * 2015-09-17 2017-09-12 宾科汽车紧固件(昆山)有限公司 Electronic parking adjusting nut cold-heading device and its processing method

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