CN102310156A - Improved process for producing brake calipers - Google Patents
Improved process for producing brake calipers Download PDFInfo
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- CN102310156A CN102310156A CN2010102117401A CN201010211740A CN102310156A CN 102310156 A CN102310156 A CN 102310156A CN 2010102117401 A CN2010102117401 A CN 2010102117401A CN 201010211740 A CN201010211740 A CN 201010211740A CN 102310156 A CN102310156 A CN 102310156A
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- caliper
- forging
- brake calipers
- forge
- steel billet
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Abstract
The invention provides a novel process for producing brake calipers of a speed reducer of a railway vehicle. The novel process provided by the invention is characterized in that: a steel billet is directly forged into the brake calipers by using mold components, wherein a rectangular billet or a round billet is subjected to sequentially overall forging according to the thickness requirement of the shape of the brake calipers along the center line of the thickness by using the forging mold components with different functions. According to the novel process provided by the invention, the internal defects of brake caliper products can be greatly reduced, the tensile strength and the extensibility of the brake calipers are enhanced, and the probability of fracture of the brake calipers in a braking process is greatly lowered, so that the traffic safety of railways is ensured.
Description
Technical field
The present invention relates to a kind of improved caliper production technology, particularly a kind of die assembly that utilizes directly forges the production technology for caliper to steel billet.
Background technology
Caliper application is a vitals on the railway decelerator on the railway systems brake apparatus.Caliper and braking rail are installed together, and eight groups of (or some groups) calipers are installed under the general braking rail, are the structure members that connects power set and braking rail.Caliper is the general designation that outer pincers were made up tong and braked in braking.When train braking, power set make vehicle deceleration through caliper lifting braking rail extruding wheel face through the huge frictional force between braking rail and the wheel.The caliper that uses on the present railway of China generally is a steel-casting, and the advantage of steel-casting is that rigidity is strong, is easy to casting.But it is poor that its shortcoming is a tensile strength, the inner defectiveness that is prone to, easy fracture when running into big external force.In the railway brake process of reality; The power that long braking rail and wheel effect produce can not evenly be divided every group of caliper equally, and the caliper of steel-casting can't conduct active force to other caliper in very short time owing to relatively poor tensile strength; Can on this caliper, occur instantaneous stressed much larger than the stressed situation of design; Cause the caliper fracture, influence braking effect, bring potential safety hazard to railways train operation.
Therefore, optimize and improve the production technology of caliper, improving the caliper security of products is individual very urgent task.
Summary of the invention
The objective of the invention is to overcome existing defective workmanship, propose a kind of brand-new, utilize die assembly directly to forge into steel billet the technology of caliper.This technology has reduced the internal flaw of caliper effectively, and the tensile strength of caliper is improved greatly, has improved the reliability and the security of caliper on the whole, and the raw material steel billet of this technology is easy to get and quality can be guaranteed.
For realizing above-mentioned purpose, the present invention adopts following production technology to produce caliper:
With rectangular bloom or circle base,,, divide up and down mould to forge successively by the thickness requirement of caliper shape and form along the center line of thickness through function different forging mold assembly.Rectangular bloom that adopts or circle base are delivered to forcing press when heating furnace is heated to more than 1100 ℃; Be forged into cross; In sending into half-formed mould, after press forging is processed the caliper shape, deliver to and carry out finish forge in the finished product mould then; Forging goes out the finished product section, and this moment, the caliper temperature was about 800 °.Then caliper is carried out annealing in process and outside polishing.
Advantage of the present invention:
One; Adopt die assembly directly to forge steel billet and be caliper, the product of production has better tensile strength, when running into big external impacts; Can rapidly active force be conducted to other caliper and then stressed jointly, greatly reduce the possibility of caliper fracture.
Two, compare with the technology of cast caliper, the technology of forging caliper can effectively reduce the internal flaw in the caliper, makes caliper overall performance stable homogeneous, has improved the reliability of caliper greatly, and caliper the lines flow smoothly, good looking appearance.
Three, in forging the technology of caliper since raw materials used be steel billet, the constituent content in the steel billet and performance can be controlled, and in this forging process, can guarantee raw-material quality and performance and the saving energy, low-carbon environment-friendly.
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described further, but and does not mean that restriction protection domain of the present invention.
Description of drawings
Fig. 1 is the front view of the forging process rough forge mould of proposition according to the present invention.
Fig. 2 is the left side view of the forging process rough forge mould of proposition according to the present invention.
Fig. 3 is the front view of half-formed mould in the forging process that proposes according to the present invention.
Fig. 4 is the left side view of half-formed mould in the forging process that proposes according to the present invention.
Fig. 5 is the left side view of finished product behind the forging process finish forge that proposes according to the present invention.
Fig. 6 is the front view of finished product behind the forging process finish forge that proposes according to the present invention.
The specific embodiment
Caliper is forged by rectangular bloom or circle base and forms, and steel billet passes through the center line of the different forging mold assembly of function along thickness, presses the thickness requirement forging successively of caliper shape, global formation.The forging mold assembly is divided into rough forge, half-formed forging and finish forge.
The forging method of caliper is with rectangular bloom or justifies base when heating furnace is heated to the high temperature more than 1100 ℃; Deliver to the forcing press forging; According to the difference of blank, the difference of forging ability, the difference of forging arrangement form; Select different last lower pass moulds for use, and the configuration of pass mould is installed on the forcing press, according to the different configurable difform pass mould of press tonnage.Two moulds are formed a trepanning pattern up and down.Down act on the pass mould below the punching press, the shape of finally forging into caliper during work by top pass mould.In the forging process at first the working pressure machine carry out rough forge, the rough forge mould is like Fig. 1, shown in 2, is cross with rectangular bloom or the forging of circle base.Use the further forging of half-formed forge mould then, half-formed forge mould is between blocker die and one-tenth swage die, and mould therefor is like Fig. 3, shown in 4.Last then pass that use into swage die carries out finish forge processing, finished product is like Fig. 5, the qualified caliper section shown in 6.Carry out annealing in process to caliper this moment, and annealing temperature is about 800 ℃.
Claims (2)
1. an improved railway brake pincers production technology is characterized in that: utilize die assembly directly to forge steel billet and be caliper.
2. according to claim 1; The technology characteristics that caliper forges is: with rectangle steel billet or circular steel billet, through the different forging mold assembly of function, along the center line of thickness; Dividing up and down successively by the thickness requirement of caliper shape, the mould forging forms; Forging can be divided into rough forge, half-formed forging, processes such as finish forge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102117401A CN102310156A (en) | 2010-06-29 | 2010-06-29 | Improved process for producing brake calipers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102117401A CN102310156A (en) | 2010-06-29 | 2010-06-29 | Improved process for producing brake calipers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102310156A true CN102310156A (en) | 2012-01-11 |
Family
ID=45423944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102117401A Pending CN102310156A (en) | 2010-06-29 | 2010-06-29 | Improved process for producing brake calipers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102310156A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112572519A (en) * | 2019-09-30 | 2021-03-30 | 天津万里铁路器材有限公司 | High-performance brake caliper |
| CN115026518A (en) * | 2022-06-28 | 2022-09-09 | 天津铁科铁路信号有限公司 | Method for machining brake caliper of vehicle speed reducer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1567354A (en) * | 1924-07-14 | 1925-12-29 | American Steel Foundries | Method of forging double jaws |
| US1600781A (en) * | 1924-07-14 | 1926-09-21 | American Steel Foundries | Method of forming brake-lever jaws |
| US4274277A (en) * | 1978-11-17 | 1981-06-23 | Schaefer Equipment Inc. | Method of making railway car brake-rod jaw |
| CN1699010A (en) * | 2004-05-18 | 2005-11-23 | 江苏大洋齿轮有限公司 | Process for making car gear-box parking brake pawl |
-
2010
- 2010-06-29 CN CN2010102117401A patent/CN102310156A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1567354A (en) * | 1924-07-14 | 1925-12-29 | American Steel Foundries | Method of forging double jaws |
| US1600781A (en) * | 1924-07-14 | 1926-09-21 | American Steel Foundries | Method of forming brake-lever jaws |
| US4274277A (en) * | 1978-11-17 | 1981-06-23 | Schaefer Equipment Inc. | Method of making railway car brake-rod jaw |
| CN1699010A (en) * | 2004-05-18 | 2005-11-23 | 江苏大洋齿轮有限公司 | Process for making car gear-box parking brake pawl |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112572519A (en) * | 2019-09-30 | 2021-03-30 | 天津万里铁路器材有限公司 | High-performance brake caliper |
| CN115026518A (en) * | 2022-06-28 | 2022-09-09 | 天津铁科铁路信号有限公司 | Method for machining brake caliper of vehicle speed reducer |
| CN115026518B (en) * | 2022-06-28 | 2024-03-22 | 天津铁科铁路信号有限公司 | Machining method for brake caliper of vehicle speed reducer |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120111 |