CN103736838A - Machining method for backstop blank - Google Patents

Machining method for backstop blank Download PDF

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Publication number
CN103736838A
CN103736838A CN201310729265.0A CN201310729265A CN103736838A CN 103736838 A CN103736838 A CN 103736838A CN 201310729265 A CN201310729265 A CN 201310729265A CN 103736838 A CN103736838 A CN 103736838A
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CN
China
Prior art keywords
blank
backstop
patrix
die
rolled
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201310729265.0A
Other languages
Chinese (zh)
Inventor
周志勇
康锋
杨文林
陈小花
郭玉茹
陈凯
宁建强
程平
靳彪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jinxi Railway Vehicle Co Ltd
Original Assignee
Jinxi Railway Vehicle Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jinxi Railway Vehicle Co Ltd filed Critical Jinxi Railway Vehicle Co Ltd
Priority to CN201310729265.0A priority Critical patent/CN103736838A/en
Publication of CN103736838A publication Critical patent/CN103736838A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a machining method for a backstop blank, which belongs to the field of machining for railway wagon accessories. The machining method disclosed by the invention comprises the following steps of: heating the blank at first, and then performing axial and radial flattening, then punching the flattened blank, then performing rolling forming on the backstop blank by using a backstop rolling forming die, and finally shaping the backstop blank by a backstop shaping die. The machining amount of the blank machined by the method disclosed by the invention is reduced during subsequent machining; meanwhile, raw materials are saved, cost is decreased, machining equipment wear is reduced, and machining working hours are saved.

Description

Backstop blank processing method
Technical field
The present invention relates to a kind of backstop blank processing method, belong to railway freight-car accessory manufacture field.
Background technology
Critical effect has been played in backstop in the sealing of bearing, and it and the common fastening bearing inner race of protecgulum make bearing in motion process, and under the effect of axial force, do not produce and jump, thereby, guarantee railway freight-car safe operation.In traditional handicraft, the processing of bearing backstop adopts forging and stamping, mechanical processing technique to complete.Be specially backstop and first through forging and stamping, form blank, then through machine add, the manufacture such as phosphatization completes.Wherein in forging and stamping, form the process of blank, directly bar is forged into cake type, form like this that at follow-up machine, to add difficulty after blank larger, also more time-consuming, when blanking, also relatively waste raw material.
Summary of the invention
The object of the invention is, in order to make the blank after processing meet product design, in blanking process, to save raw material, at follow-up machine, add process and reduce labour intensity, save man-hour, thereby reach, reduce costs.
The object of the invention is to be achieved through the following technical solutions:
A kind of backstop blank processing method of the present invention, concrete steps are:
1) with bar, feed intake, the weight that feeds intake is 1.2~1.4 times of finished product.
2) bar of throwing in is heated to after 1100~1300 ℃, keep 10~15min, again blank is clapped flat: clap and be flatly divided into axially and radially clap flat, axially clap flat technique and make the aspect ratio required product height of blank material more than 10mm, radially clap the diameter that flat technique makes blank material and conform to backstop blank diameter.
3) blank of clapping after flat is carried out to punching, punching position and aperture will guarantee to match with product design.
4) adopt backstop to be rolled into pattern rear shelves blank is carried out to roller-compaction; Described backstop is rolled into pattern: the circulus that interior shape and backstop blank shape match;
Concrete roller-compaction technique is:
First backstop is rolled into pattern and is preheating to 150 ℃, then be fixed on fixture, by the 3rd) blank of step hole punch puts into backstop and is rolled into pattern, and the hole surrounding with staving press along blank rolls, and rolls to blank and fills up the inner chamber that backstop is rolled into pattern.
5) adopt backstop sizing die to carry out shaping process to rear shelves blank; Described backstop sizing die, comprises patrix die shank, patrix, counterdie, fixture.Patrix die shank is column structure, and the lower working face of patrix and the upper surface profile of backstop blank match, the loop configuration matching for inner chamber and blank outer wall profile of counterdie; Patrix is connected with forcing press by patrix die shank, and counterdie supports by fixture.
Concrete shaping process is: first by the preheating of backstop sizing die, preheat temperature is 150 ℃; By through the 4th) blank temperature after step roller-compaction is heated to be not less than 850 ℃, blank put between the upper die and lower die of backstop sizing die, by forcing press, patrix exerted pressure downwards, will obtain needed backstop blank after completing.
Beneficial effect is:
Adopt the blank of the inventive method processing, make the follow-up machine added-time reduce machine dosage, save raw material simultaneously, reduce costs, reduce machining equipment wearing and tearing, while saving machined.
Accompanying drawing explanation
Fig. 1 is backstop blank drawing.
Fig. 2 is that backstop is rolled into pattern figure.
Fig. 3 is backstop sizing die figure.
Wherein, 1-patrix die shank; 2-patrix; 3-counterdie; 4-fixture.
The specific embodiment
Below in conjunction with drawings and Examples, content of the present invention is further described.
Embodiment
The present invention relates to a kind of backstop blank processing method, concrete steps are:
1) with bar, feed intake, the size that feeds intake, for Φ 120 * 85 (mm), is removed surperficial burr.
2) with IGCT water-cooled static frequency changer, the bar of throwing in is heated, with the Portable infrared temperature measurement instrument of model PT300, every 30min, measure a furnace temperature, guarantee that blank does not have overheated burn-off phenomenon in heating process.Temperature more than 1100 ℃ can start forging blank, blank is clapped flat: clap and be flatly divided into axially and radially clap flatly, axially clap flat h=36, radially clap flat=Φ 185.
3) blank of clapping after flat is carried out its punching with 750kg pneumatic hammer machine, the technical program punching size is Φ 50.
4) first backstop is as shown in Figure 2 rolled into pattern and is preheating to 150 ℃, then be fixed on fixture, the blank of hole punch is put into backstop and be rolled into pattern, hole surrounding with 250mm staving press along blank rolls, blank can be filled the gap that backstop is rolled into pattern in the process rolling, after filling completely, can produce projection, namely modification along the route of staving press.
5) utilize the remaining temperature of blank to carry out shaping to it.Now blank temperature requires to be not less than 850 ℃, blank is put between the patrix 2 and counterdie 3 of backstop sizing die as shown in Figure 3 to 150 ℃ of the prior preheatings of backstop sizing die.With 100t forcing press, patrix 2 is exerted pressure downwards, after completing, will obtain needed backstop blank.

Claims (1)

1. a backstop blank processing method, is characterized in that: concrete steps are:
1) with bar, feed intake, the weight that feeds intake is 1.2~1.4 times of finished product;
2) bar of throwing in is heated to after 1100~1300 ℃, keep 10~15min, again blank is clapped flat: clap and be flatly divided into axially and radially clap flat, axially clap flat technique and make the aspect ratio required product height of blank material more than 10mm, radially clap the diameter that flat technique makes blank material and conform to backstop blank diameter;
3) blank of clapping after flat is carried out to punching, punching position and aperture will guarantee to match with product design;
4) adopt backstop to be rolled into pattern rear shelves blank is carried out to roller-compaction; Described backstop is rolled into pattern: the circulus that interior shape and backstop blank shape match;
Concrete roller-compaction technique is:
First backstop is rolled into pattern and is preheating to 150 ℃, then be fixed on fixture, by the 3rd) blank of step hole punch puts into backstop and is rolled into pattern, and the hole surrounding with staving press along blank rolls, and rolls to blank and fills up the inner chamber that backstop is rolled into pattern;
5) adopt backstop sizing die to carry out shaping process to rear shelves blank; Described backstop sizing die, comprises patrix die shank, patrix, counterdie, fixture; Patrix die shank is column structure, and the lower working face of patrix and the upper surface profile of backstop blank match, the loop configuration matching for inner chamber and blank outer wall profile of counterdie; Patrix is connected with forcing press by patrix die shank, and counterdie supports by fixture;
Concrete shaping process is: first by the preheating of backstop sizing die, preheat temperature is 150 ℃; By through the 4th) blank temperature after step roller-compaction is heated to be not less than 850 ℃, blank put between the upper die and lower die of backstop sizing die, by forcing press, patrix exerted pressure downwards, will obtain needed backstop blank after completing.
CN201310729265.0A 2013-12-26 2013-12-26 Machining method for backstop blank Pending CN103736838A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310729265.0A CN103736838A (en) 2013-12-26 2013-12-26 Machining method for backstop blank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310729265.0A CN103736838A (en) 2013-12-26 2013-12-26 Machining method for backstop blank

Publications (1)

Publication Number Publication Date
CN103736838A true CN103736838A (en) 2014-04-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310729265.0A Pending CN103736838A (en) 2013-12-26 2013-12-26 Machining method for backstop blank

Country Status (1)

Country Link
CN (1) CN103736838A (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08192233A (en) * 1995-01-10 1996-07-30 Honda Motor Co Ltd Piercing method
CN1963260A (en) * 2006-11-22 2007-05-16 重庆长风精化毛坯有限责任公司 Gear ring blank for automobile synchronizer and method for processing same
CN101913058A (en) * 2010-07-23 2010-12-15 莫亚夫 Blank-making rolling method for synchronous sliding sleeve of automotive transmission
CN201720326U (en) * 2010-05-06 2011-01-26 重庆长风精化毛坯有限责任公司 Gear ring blank reshaping mould
CN201720370U (en) * 2010-05-06 2011-01-26 重庆长风精化毛坯有限责任公司 Milling wheel for ring milling machine
CN101966553A (en) * 2010-10-18 2011-02-09 周祝道 Method for manufacturing rear axle driven gear of small and medium-sized automobile
CN102126136A (en) * 2011-01-04 2011-07-20 武汉理工大学 Automotive rear axle driven bevel gear blank forging production line
CN102172734A (en) * 2010-12-31 2011-09-07 莫亚夫 Rolling blank making method for automobile transmission gear ring
CN102528406A (en) * 2012-03-13 2012-07-04 江国辉 Method for processing automobile synchronizer gear ring blank
CN102601279A (en) * 2012-03-27 2012-07-25 四川新筑精坯锻造有限公司 Train wheel blank manufacturing process by adopting swing rolling and forming technology
CN202398664U (en) * 2012-01-17 2012-08-29 福瑞盛航空机件(苏州)有限公司 Rapid shaping mechanism

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08192233A (en) * 1995-01-10 1996-07-30 Honda Motor Co Ltd Piercing method
CN1963260A (en) * 2006-11-22 2007-05-16 重庆长风精化毛坯有限责任公司 Gear ring blank for automobile synchronizer and method for processing same
CN201720326U (en) * 2010-05-06 2011-01-26 重庆长风精化毛坯有限责任公司 Gear ring blank reshaping mould
CN201720370U (en) * 2010-05-06 2011-01-26 重庆长风精化毛坯有限责任公司 Milling wheel for ring milling machine
CN101913058A (en) * 2010-07-23 2010-12-15 莫亚夫 Blank-making rolling method for synchronous sliding sleeve of automotive transmission
CN101966553A (en) * 2010-10-18 2011-02-09 周祝道 Method for manufacturing rear axle driven gear of small and medium-sized automobile
CN102172734A (en) * 2010-12-31 2011-09-07 莫亚夫 Rolling blank making method for automobile transmission gear ring
CN102126136A (en) * 2011-01-04 2011-07-20 武汉理工大学 Automotive rear axle driven bevel gear blank forging production line
CN202398664U (en) * 2012-01-17 2012-08-29 福瑞盛航空机件(苏州)有限公司 Rapid shaping mechanism
CN102528406A (en) * 2012-03-13 2012-07-04 江国辉 Method for processing automobile synchronizer gear ring blank
CN102601279A (en) * 2012-03-27 2012-07-25 四川新筑精坯锻造有限公司 Train wheel blank manufacturing process by adopting swing rolling and forming technology

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Application publication date: 20140423