CN102114602B - Fixture for machining brake cover of motorcycle copper/steel fiber non-asbestos drum brake - Google Patents
Fixture for machining brake cover of motorcycle copper/steel fiber non-asbestos drum brake Download PDFInfo
- Publication number
- CN102114602B CN102114602B CN201010042017A CN201010042017A CN102114602B CN 102114602 B CN102114602 B CN 102114602B CN 201010042017 A CN201010042017 A CN 201010042017A CN 201010042017 A CN201010042017 A CN 201010042017A CN 102114602 B CN102114602 B CN 102114602B
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- Prior art keywords
- brake
- drill bushing
- center
- drill
- cover
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Abstract
The invention relates to a fixture for machining a brake cover of a motorcycle copper/steel fiber non-asbestos drum brake, and is characterized by comprising a frame which consists of a bottom plate, a drill sleeve guide plate and a side plate, wherein a cylinder is fixed on the bottom plate; a top plate provided with a concave hole is fixedly connected to a piston of the cylinder; a first drill sleeve, a second drill sleeve and a third drill sleeve which are opposite to a positioning hole, a central shaft sleeve hole and a cam hole of the brake cover are fixed on the drill sleeve guide plate; the three drill sleeves are step drill sleeves; small-diameter sections of the step drill sleeves are positioned in the drill sleeve guide plate, and ends of the step drill sleeves extend out of the drill sleeve guide plate; and the distance from the center of the first drill sleeve to the center of the second drill sleeve is equal to the distance from the center of the third drill sleeve to the center of the second drill sleeve. The brake cover of the drum brake produced by the fixture has a good brake effect, small brake abnormal sound and low using cost; the brake cover and brake shoes are well matched; and the brake shoes are interchangeable.
Description
Technical field
The present invention relates to a kind of processing unit (plant), particularly a kind ofly process the anchor clamps that motorcycle copper/steel fibre does not have asbestos drum brake brake cover.
Background technology
Motorcycle often need slow down so that stop in the process of moving, and this just needs brake that wheel is applied a power or a moment that stops its rotation, has reached the purpose of slowing down or stopping.Drum brake is made up of brake drum, brake shoe, brake cam, brake arm, back shaft, back-moving spring, brake cover etc.
Brake drum is a steel, adopts the method for bimetallic casting to be fixed in the wheel hub more, rotates with wheel; Brake drum cover is fixed on front fork or the rear wheel fork, can not rotate, and brake shoe, brake cam etc. are housed on it; During brake activation, brake wire or brake bar act on brake arm with the rolling brake cam, and brake shoe is opened, and are pressed on the bore area of brake drum, produce frictional force, make brake drum (being wheel) obtain braking moment thereby ramp to stop.
Of paramount importance on the brake cover of motorcycle drum brake is the cam hole center is arrived at central shaft trepanning center to locating shaft Center-to-Center axle sleeve hole center distance; Both should guarantee identical at distance; And the depth of parallelism≤0.05mm in these three holes etc.; These parameters are used for fixing brake shoe, and its precision is directly connected to the effect that cooperates of brake cover and brake shoe, and the stability of the braking ability of brake and coefficient of friction.At present; The drum brake brake cover adopts mold production; Promptly use earlier the die casting brake cover, with reamer difference machining center axle sleeve hole, positioning shaft hole, cam hole, such processing mode will produce mold sum of errors mismachining tolerance again; Can not guarantee that the distance to the cam hole center equates to locating shaft Center-to-Center axle sleeve hole center at brake cover central shaft trepanning center, makes brake cover bad with cooperating of brake shoe.Though this production method; Can guarantee the first use of the brake cover on the brake, but as the brake shoe of consumable accessory, because brake cover is bad with cooperating of brake shoe; Make shoe brake not have versatility; When using a period of time need change and can not change, brake cover that can only the integral replacing brake, cost is high.Therefore, adopt the braking of the brake of said method production and processing to be stamped following shortcoming:
1. brake shoe does not have interchangeability, and use cost is high;
2. brake efficiency is relatively poor, and the sensation braking is weak;
3. be easy to generate abnormal sound when braking.
Summary of the invention
The purpose of this invention is to provide a kind of anchor clamps that motorcycle copper/steel fibre does not have asbestos drum brake brake cover of processing; The drum brake brake cover good braking effect that adopts said anchor clamps to produce; The braking abnormal sound is little; Working good of brake cover and brake shoe, brake shoe can exchange, and use cost is low.
Technical scheme of the present invention is: processing motorcycle copper/steel fibre does not have the anchor clamps of asbestos drum brake brake cover; Comprise the framework of forming by base plate, drill bushing guide plate and side plate; Be fixed with cylinder on the said base plate; Be fixedly connected with the top board that has shrinkage pool on the piston of cylinder; Be fixed with corresponding first drill bushing, second drill bushing and the 3rd drill bushing in position on the said drill bushing guide plate with the locating hole of brake cover, central shaft trepanning, cam hole; Said 3 drill bushings are the step drill bushing, and the path section of its step drill bushing is arranged in the drill bushing guide plate and the drill bushing guide plate is stretched out in the end, and the said first drill bushing center equates with the distance of the 3rd drill bushing center to the second drill bushing center to the distance at the second drill bushing center.
The length of the big footpath of said drill bushing section is greater than the length of path section.
The diameter of the shrinkage pool on the said top board is greater than the diameter of brake cover outer surface central boss.
Said top board and piston are integrally formed.
Owing to adopt technique scheme; On cylinder piston fixing on the base plate of framework, fixedly lay the top board that has shrinkage pool of brake brake cover; Be fixed with 3 corresponding drill bushings of position on the drill bushing guide plate of framework with the locating hole of brake cover, central shaft trepanning, cam hole; And the first drill bushing center equates with the distance of the 3rd drill bushing center to the second drill bushing center to the distance at the second drill bushing center; In the machining brake brake cover; In second drill bushing and the 3rd drill bushing, reamer is installed, first drill bushing is used for the location, and the disposable feed of reamer can be processed central shaft trepanning, the cam hole on the brake cover simultaneously; Can guarantee that the distance to the cam hole center equates the depth of parallelism≤0.05mm of above-mentioned three hole positioning shaft holes, central shaft trepanning, cam hole to locating shaft Center-to-Center axle sleeve hole center at central shaft trepanning center.Therefore, the drum brake brake cover good braking effect that adopts anchor clamps according to the invention to produce, abnormal sound is little during braking.Again because adopt the disposable feed of reamer to get final product central shaft trepanning, cam hole on the while machining brake brake cover; Working good of brake cover and brake shoe; When the consumable accessory shoe brake of brake brake cover damages; Only change shoe brake and get final product, do not need the brake cover of integral replacing brake, its use cost reduces greatly.
All be adhesively fixed with non-asbestos copper fibre or steel fibre brake strip on the brake shoe of the present invention, the thickness of said non-asbestos copper fibre or steel fibre brake strip is generally 3～5mm.
Description of drawings
Fig. 1 is the structure diagram of anchor clamps of the present invention;
Fig. 2 is for using the sketch map of these anchor clamps processing brake cover.
Among the figure, 1 is base plate, and 2 is the drill bushing guide plate, and 3 is side plate, and 4 is bolt, and 51 is first axle sleeve; 52 is second axle sleeve, and 53 is the 3rd axle sleeve, and 6 is cylinder, and 7 is piston, and 8 is top board, and 9 is reamer; 10 is locating shaft, and 11 is axle sleeve hole, and 12 is cam hole, and 13 is brake cover, and 14 is twin shaft drilling machine unit head.
The specific embodiment
Referring to Fig. 1.Processing motorcycle copper/steel fibre does not have the anchor clamps of asbestos drum brake brake cover; Two side plates, 3 usefulness bolts 4 are fastened on the base plate 1; Drill bushing guide plate 2 usefulness bolts 4 are connected with biside plate, a framework of composition, and base plate is fixed on the workbench of lathe with hold-down bolt.Be fixed with cylinder 6 on the said base plate, welding or be threaded and be fixed with the top board 8 that has shrinkage pool on the piston 7 of cylinder, certainly, top board also can be integrally formed with piston.Interference fit or be threaded corresponding with the position of the locating hole of brake cover, central shaft trepanning 11, cam hole 12 first drill bushing 51, second drill bushing 52 and the 3rd drill bushing 53 on the said drill bushing guide plate 2; Said 3 drill bushings are the step drill bushing; The path section of its step drill bushing is arranged in the drill bushing guide plate and the drill bushing guide plate is stretched out in the end, and the length of the big footpath of said drill bushing section makes the reamer of wherein installing when work greater than the length of path section; Can not rock, guarantee the accuracy of its processing.The diameter of the shrinkage pool on the top board when the central shaft trepanning 11 of processing brake cover with these anchor clamps, cam hole 12, is used for the location to brake cover greater than the diameter of brake cover outer surface central boss.The said first drill bushing center equates with the distance of the 3rd drill bushing center to the second drill bushing center to the distance at the second drill bushing center, to guarantee that the distance to the cam hole center equates to locating shaft Center-to-Center axle sleeve hole center at brake cover central shaft trepanning center.
Referring to Fig. 2.When using these anchor clamps processing brake cover, earlier locating shaft 10 is put in first drill bushing 51 fixingly, the common fixedly method of reamer of two reamer 9 usefulness is fixed in the spring chuck of twin shaft drilling machine unit head 14 (not expressing among the figure), the leading portion of reamer puts in drill bushing.Again brake cover 13 is placed on the top board 3, and the boss at brake cover outer surface center is dropped in the shrinkage pool of top board, two anchor points of boss at the brake cover outer surface center in locating shaft 10 and the shrinkage pool of dropping into top board are located whole brake cover.Start switching cylinder, cylinder promotes piston, and piston drive top board 8 is moved upward to drill bushing with brake cover fixed thereon and contacts.Start drilling machine, reamer at the uniform velocity moves downward the cam hole and the axle sleeve hole of the brake cover that drills and reams with the speed of 0.2mm/S, to reaching technological requirement.Unclamp the switch of cylinder, cylinder is descending, takes off brake cover, is about to the brake cover completion of processing.Distance to the cam hole center equates to locating shaft Center-to-Center axle sleeve hole center at the brake cover central shaft trepanning center that is processed, and the depth of parallelism≤0.05mm in these three holes.
Claims (4)
1. process the anchor clamps that motorcycle copper/steel fibre does not have asbestos drum brake brake cover for one kind; It is characterized in that: comprise the framework of forming by base plate, drill bushing guide plate and side plate; Be fixed with cylinder on the said base plate; Be fixedly connected with the top board that has shrinkage pool on the piston of cylinder; Be fixed with corresponding first drill bushing, second drill bushing and the 3rd drill bushing in position on the said drill bushing guide plate with the locating hole of brake cover, central shaft trepanning, cam hole; Said first drill bushing, second drill bushing and the 3rd drill bushing are the step drill bushing, and the path section of its step drill bushing is arranged in the drill bushing guide plate and the drill bushing guide plate is stretched out in the end, and the said first drill bushing center equates with the distance of the 3rd drill bushing center to the second drill bushing center to the distance at the second drill bushing center.
2. processing motorcycle copper/steel fibre according to claim 1 does not have the anchor clamps of asbestos drum brake brake cover, it is characterized in that: the length of the big footpath of said drill bushing section is greater than the length of path section.
3. processing motorcycle copper/steel fibre according to claim 1 does not have the anchor clamps of asbestos drum brake brake cover, it is characterized in that: the diameter of the shrinkage pool on the said top board is greater than the diameter of brake cover outer surface central boss.
4. processing motorcycle copper/steel fibre according to claim 1 does not have the anchor clamps of asbestos drum brake brake cover, it is characterized in that: said top board and piston are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010042017A CN102114602B (en) | 2010-01-06 | 2010-01-06 | Fixture for machining brake cover of motorcycle copper/steel fiber non-asbestos drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010042017A CN102114602B (en) | 2010-01-06 | 2010-01-06 | Fixture for machining brake cover of motorcycle copper/steel fiber non-asbestos drum brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102114602A CN102114602A (en) | 2011-07-06 |
| CN102114602B true CN102114602B (en) | 2012-09-05 |
Family
ID=44213584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010042017A Expired - Fee Related CN102114602B (en) | 2010-01-06 | 2010-01-06 | Fixture for machining brake cover of motorcycle copper/steel fiber non-asbestos drum brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102114602B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761214A (en) * | 2012-08-05 | 2012-10-31 | 福建省福安市力德泵业有限公司 | Finish hinge extrusion tool and finish hinge extrusion process for end cover bearing chamber of MS aluminum casing motor |
| CN115041931A (en) * | 2022-08-15 | 2022-09-13 | 无锡锦绣轮毂有限公司 | Positioning tool for hub machining protection and spraying method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1576143A (en) * | 2003-07-01 | 2005-02-09 | Smc株式会社 | Locating and clamping apparatus |
| CN1744964A (en) * | 2003-01-29 | 2006-03-08 | 克斯美库股份有限公司 | Clamping device and clamping system using the same |
| CN201333626Y (en) * | 2008-12-03 | 2009-10-28 | 南车戚墅堰机车有限公司 | Processing device for reinforcing sleeve |
| CN201659439U (en) * | 2010-01-06 | 2010-12-01 | 重庆振华制动器有限公司 | Clamp for processing brake cover of copper/steel fiber asbestos-free drum brake of motorcycle |
-
2010
- 2010-01-06 CN CN201010042017A patent/CN102114602B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1744964A (en) * | 2003-01-29 | 2006-03-08 | 克斯美库股份有限公司 | Clamping device and clamping system using the same |
| CN1576143A (en) * | 2003-07-01 | 2005-02-09 | Smc株式会社 | Locating and clamping apparatus |
| CN201333626Y (en) * | 2008-12-03 | 2009-10-28 | 南车戚墅堰机车有限公司 | Processing device for reinforcing sleeve |
| CN201659439U (en) * | 2010-01-06 | 2010-12-01 | 重庆振华制动器有限公司 | Clamp for processing brake cover of copper/steel fiber asbestos-free drum brake of motorcycle |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2010-221376A 2010.10.07 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102114602A (en) | 2011-07-06 |
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Granted publication date: 20120905 Termination date: 20220106 |