CN103148128B - Lightweight brake backing plate and manufacturing process thereof - Google Patents
Lightweight brake backing plate and manufacturing process thereof Download PDFInfo
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- CN103148128B CN103148128B CN201310091880.3A CN201310091880A CN103148128B CN 103148128 B CN103148128 B CN 103148128B CN 201310091880 A CN201310091880 A CN 201310091880A CN 103148128 B CN103148128 B CN 103148128B
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- brake backing
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Abstract
The invention discloses a kind of lightweight brake backing plate and manufacturing process thereof, its innovative point is: described brake backing plate adopts single pin shaft hole to design, be six independent spiral shell ears by dust-proof plate hole supported design simultaneously, and select QT900-9 material, heat-treat again, increase the strength of materials, reduce thickness and the side plate height of base plate.By such scheme and technique, reduce the weight of brake backing plate, saved spillage of material and the cost of base plate, after Overheating Treatment, the intensity of base plate improves simultaneously, adds working life.
Description
Technical field
The present invention relates to a kind of lightweight brake backing plate and manufacturing process thereof, particularly relate to the design of a kind of single pin shaft hole and through heat treated lightweight brake backing plate and manufacturing process thereof.
Background technique
Brake backing plate is the important component part of break, is the support of each parts of break, and therefore the quality of base plate plays a part very important for the running of break.As shown in Figure 1, traditional brake backing plate is the design of double-pin axis hole, the cylinder position b5 having two to connect together, and dust cover screw hole parts 3 is ring simultaneously, and such design, wastes raw material, and adds the weight of brake backing plate.In addition, the material of the QT450-10 trade mark is selected in base plate casting, and without any special processing, the strength of materials is lower, needs reinforcement base plate thickness and U-shaped limit height to ensure base plate strength, wastes material, add base plate weight.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of lightweight, lightweight brake backing plate that cost is low and manufacturing process thereof.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of lightweight brake backing plate, is characterized in that:
Described lightweight brake backing plate comprises floor body, be positioned at floor body outer side along and perpendicular to outside the U-shaped limit of base plate, U-shaped limit for bore the screw hole parts of installing dust cover and lay respectively at floor body two ends for boring the cylinder position a of roller axis hole and the cylinder position b for lead plug axis hole;
Described floor body is hollow ring, and thickness is 7mm; Described U-shaped limit height is 10mm; Described cylinder position b is diameter is 57mm, is highly the cylindrical body of 45mm; Described screw hole parts is six spiral shell ears being fixed on outside U-shaped limit, and described spiral shell ear is U-shaped, and side is fixed on U-shaped limit; Described cylinder position b also has lubricating cup hole.
Realize a manufacturing process for described lightweight brake backing plate, it is characterized in that comprising following steps:
A. the material of the QT900-9 trade mark is selected to carry out base plate rough-cast, then blank is heat-treated, base plate blank is first placed in intermediate frequency chamber oven and is progressively warming up to 900-950 degree, then 900-950 degree is kept 2.5 hours, cool fast afterwards, again base plate blank is put into nitrate furnace and be warming up to 340-360 degree, then keep 340-360 degree 2 hours, finally take out base plate blank and naturally cool;
B. surface treatment is carried out to the base plate blank after heat treatment, remove burr; Then to get on the bus annulus endoporus at floor body, then floor body plane car is put down, reach 7mm thickness; Thick brill roller axis hole and support pin-and-hole on cylinder position a and cylinder position b;
C. essence is warded off the roller axis hole on cylinder position a and cylinder position b and is supported pin-and-hole, in screw hole parts, then bore the screw for installing dust cover, and on the b of cylinder position, bore the lubricating cup hole being used for lubricating oil filling;
D. to each Hole chamfering of above-mentioned steps and deburring, finally carry out cleaning and putting in storage.
Adopt such technological scheme, by the design of single pin shaft hole, and the design of the independent spiral shell ear of the screw hole parts of installation dust cover, decrease the loss of material, reduce the weight of brake backing plate; Select QT900-9 material simultaneously and before processing blank heat-treated, adding the strength of materials, thus the height on floor body thickness and U-shaped limit can be reduced, greatly reduce the weight of brake backing plate.By the combination of these two kinds of modes, brake backing plate is reduced to 4.4kg by original 10.5kg, tensile strength is increased to 1040MPa from the 450MPa of original QT450-10 material simultaneously, yield strength is increased to 566MPa by 310MPa, fatigue endurance limit rises to more than ten million time from 5,000,000 times, decrease the loss of material, alleviate the weight of brake backing plate, strengthen the intensity of brake backing plate simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of conventional brake base plate.
Fig. 2 is the plan view of the brake backing plate of lightweight brake backing plate of the present invention and manufacturing process thereof.
Fig. 3 is the side sectional view of the brake backing plate of lightweight brake backing plate of the present invention and manufacturing process thereof.
Embodiment
As shown in Figure 2, lightweight brake backing plate of the present invention mainly comprise floor body 1, be positioned at floor body 1 outer side along and perpendicular to outside the U-shaped limit 2 of base plate, U-shaped limit 2 for bore the screw hole parts 3 of installing dust cover and lay respectively at floor body 1 two ends for boring the cylinder position a4 of roller axis hole and the cylinder position b5 for lead plug axis hole.
Floor body 1 is hollow ring, and thickness has reduced to 7mm from original 15mm.The height on U-shaped limit 2 is reduced to 10mm from original 48mm.Cylinder position b5 is diameter is 57mm, it is highly the cylindrical body of 45mm, and brake backing plate is the design of single pin shaft hole, only need a cylinder position b5, decrease a cylinder position, decrease the loss of material from structure, simultaneously, because the improvement of manufacturing process, the height of cylinder position b5 is reduced to 45mm by 79mm.Screw hole parts 3 is six spiral shell ears being fixed on outside U-shaped limit 2, and spiral shell ear is U-shaped, and side is fixed on U-shaped limit 2, compared with traditional annular design, decreases a large amount of spillages of material.Cylinder position b5 also has lubricating cup hole 6, for being pin shaft hole position lubricating oil filling.
Lightweight brake backing plate manufacturing process of the present invention comprises following steps:
A. first select the material of the QT900-9 trade mark to carry out base plate rough-cast, QT spheroidal graphite cast iron class material has good intensity and toughness, and combination property is higher, and wear resistance and damping property better, and can change its performance by various heat treatment.Then blank is heat-treated, base plate blank is first placed in intermediate frequency chamber oven and is progressively warming up to 900-950 degree, 900-950 degree is kept within 2.5 hours, to make base plate blank austenitizing even, cool fast afterwards, again base plate blank is put into nitrate furnace and be warming up to 340-360 degree, keep 340-360 degree again 2 hours, make base plate blank reach bainite metallographic structure, finally take out base plate blank and naturally cool;
B. surface treatment is carried out to the base plate blank after heat treatment, remove the burr of base plate blank surface; Then to get on the bus annulus endoporus at floor body 1, then floor body plane car is put down, reach 7mm thickness; Thick brill roller axis hole and support pin-and-hole on cylinder position a4 and cylinder position b5;
C. ward off the roller axis hole on cylinder position a4 and cylinder position b5 to fine finishing center essence and support pin-and-hole, making roller axis hole and support pin-and-hole reach higher precision and make bore area smooth, reduce friction factor.Then in screw hole parts 3, boring the screw for installing dust cover, and on the b5 of cylinder position, boring the lubricating cup hole 6 being used for lubricating oil filling;
D. last, to each Hole chamfering of above-mentioned steps and deburring, make brake backing plate outward appearance Micron Technology more, finally carry out cleaning and put preservation in storage.
Adopt such Design and manufacture technique, by the design of single pin shaft hole, decrease a pin shaft hole support cylinder position b5, and reduce the height of pin shaft hole support, save materials consumption.The screw hole parts 3 of the dust cover plate hole of the original ring around base plate side improved as independently spiral shell ear, screw number is also reduced to six by original eight, has greatly saved material simultaneously.And select QT900-9 material and heat-treat, improve the intensity of material from every side, the overall weight of base plate is reduced to while 4.4kg saves cost of material greatly by original 10.5kg at the reduction thickness of base plate and the height on U-shaped limit, tensile strength is increased 1040MPa by 450MPa, yield strength increases 876MPa from 310MPa, and fatigue endurance limit rises to ten million time from 5,000,000 times can also keep previous level.
Claims (1)
1. the manufacturing process of a lightweight brake backing plate, it is characterized in that, described lightweight brake backing plate comprises floor body (1), be positioned at floor body (1) outer side along and perpendicular to the U-shaped limit (2) of base plate, U-shaped limit (2) outside for boring the screw hole parts (3) of installing dust cover and the cylinder position a(4 for boring roller axis hole laying respectively at floor body (1) two ends) and for the cylinder position b(5 of lead plug axis hole); Described floor body (1) is hollow ring, and thickness is 7mm; Described U-shaped limit (2) is highly 10mm; Described cylinder position b(5) for diameter is 57mm, be highly the cylindrical body of 45mm; Described screw hole parts (3) is six spiral shell ears being fixed on outside, U-shaped limit (2), and described spiral shell ear is U-shaped, and side is fixed on U-shaped limit (2); Described cylinder position b(5) on also have lubricating cup hole (6);
Comprise following steps:
A, the material of the QT900-9 trade mark is selected to carry out base plate rough-cast, then blank is heat-treated, base plate blank is first placed in intermediate frequency chamber oven and is progressively warming up to 900-950 degree, then 900-950 degree is kept 2.5 hours, cool fast afterwards, again base plate blank is put into nitrate furnace and be warming up to 340-360 degree, then keep 340-360 degree 2 hours, finally take out base plate blank and naturally cool;
B, surface treatment is carried out to the base plate blank after heat treatment, remove burr; Then to get on the bus annulus endoporus at floor body (1), then floor body plane car is put down, reach 7mm thickness; At cylinder position a(4) and cylinder position b(5) above slightly bore roller axis hole and support pin-and-hole;
C, essence ward off cylinder position a(4) and cylinder position b(5) on roller axis hole and support pin-and-hole, then at the upper screw bored for installing dust cover of screw hole parts (3), and at cylinder position b(5) above bore the lubricating cup hole (6) being used for lubricating oil filling;
D, to each Hole chamfering of above-mentioned steps and deburring, finally carry out cleaning and putting in storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310091880.3A CN103148128B (en) | 2013-03-21 | 2013-03-21 | Lightweight brake backing plate and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310091880.3A CN103148128B (en) | 2013-03-21 | 2013-03-21 | Lightweight brake backing plate and manufacturing process thereof |
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| Publication Number | Publication Date |
|---|---|
| CN103148128A CN103148128A (en) | 2013-06-12 |
| CN103148128B true CN103148128B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310091880.3A Active CN103148128B (en) | 2013-03-21 | 2013-03-21 | Lightweight brake backing plate and manufacturing process thereof |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114473397B (en) * | 2021-12-29 | 2023-02-21 | 江苏凯迅达高铁传动技术开发有限公司 | Method for machining core component of drum brake |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0887570A2 (en) * | 1997-06-26 | 1998-12-30 | Akebono Brake Industry Co., Ltd. | Drum brake |
| CN101397601A (en) * | 2007-09-29 | 2009-04-01 | 湖南大学 | Heat treating technology for ausferrite spheroidal graphite cast iron |
| CN101493124A (en) * | 2008-12-06 | 2009-07-29 | 湖南运达机械制造有限公司 | Single-anchor pin cam drum type brake |
| CN102829103A (en) * | 2011-06-17 | 2012-12-19 | 泰州神力车桥有限公司 | Left brake assembly for engineering vehicle |
| CN203189573U (en) * | 2013-03-21 | 2013-09-11 | 江苏汤臣汽车零部件有限公司 | Light brake bottom plate |
-
2013
- 2013-03-21 CN CN201310091880.3A patent/CN103148128B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0887570A2 (en) * | 1997-06-26 | 1998-12-30 | Akebono Brake Industry Co., Ltd. | Drum brake |
| CN101397601A (en) * | 2007-09-29 | 2009-04-01 | 湖南大学 | Heat treating technology for ausferrite spheroidal graphite cast iron |
| CN101493124A (en) * | 2008-12-06 | 2009-07-29 | 湖南运达机械制造有限公司 | Single-anchor pin cam drum type brake |
| CN102829103A (en) * | 2011-06-17 | 2012-12-19 | 泰州神力车桥有限公司 | Left brake assembly for engineering vehicle |
| CN203189573U (en) * | 2013-03-21 | 2013-09-11 | 江苏汤臣汽车零部件有限公司 | Light brake bottom plate |
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| CN103148128A (en) | 2013-06-12 |
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Effective date of registration: 20200109 Address after: 226500 No.1 Xinning Road, Jiang'an Town, Rugao City, Nantong City, Jiangsu Province Patentee after: Jiangsu kaixunda High Speed Railway Transmission Technology Development Co., Ltd Address before: 226500 Jiangsu city of Nantong province Rugao City Jiangan Zhenning in two groups Patentee before: Jiangsu Tangchen Automobile Parts Co., Ltd. |
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