CN103143951B - Drum brake base plate boring jig - Google Patents
Drum brake base plate boring jig Download PDFInfo
- Publication number
- CN103143951B CN103143951B CN201310076168.6A CN201310076168A CN103143951B CN 103143951 B CN103143951 B CN 103143951B CN 201310076168 A CN201310076168 A CN 201310076168A CN 103143951 B CN103143951 B CN 103143951B
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- taper
- locating shaft
- workpiece
- tapered sleeve
- vee
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Abstract
The invention discloses a kind of drum brake base plate boring jig, including clamp bottom board, clamp bottom board is provided with bearing, vee-block base；Vee-block base can slide on clamp bottom board, and the upper end of vee-block base is provided with the V-arrangement locating piece assembly that can move left and right；It is slidably connected between V-arrangement locating piece assembly and vee-block base；The top of bearing is provided with workpiece taper locating shaft, is provided with compression axis in workpiece taper locating shaft, and the lower end of compression axis is fixed on workpiece taper locating shaft, and the upper end of compression axis is provided with tapered sleeve round clamp；The taper location ringfeder that the conical surface matches it is provided with workpiece taper locating shaft between tapered sleeve round clamp with workpiece taper locating shaft, this location mode can be good at getting rid of the gap between bottom center hole and locating shaft, and can better ensure that the relative position of base plate processing Kong Yuqi central major aperture.
Description
Technical field
The present invention relates to a kind of back-plate fixture for processing, relate in particular to a kind of drum brake back-plate boring jig, belong to machinery manufacturing technology field.
Background technology
The processing method in drum brake back-plate hole is usually at present: on the basis of the middle macropore of base plate and end face thereof, blank shape positions, and processes the installing hole of bearing pin and camshaft.In the middle of base plate, macropore uses matched in clearance with workpiece locating shaft, workpiece locating shaft uses integral type: when both gaps are 0.03mm-0.05mm, base plate is difficult to be installed on fixture, even if installing, in the middle of base plate, macropore is likely destroyed, being difficult to ensure that the depth of parallelism of bottom center hole and base plate installing hole, simultaneously because installation difficulty, working (machining) efficiency is the lowest；If gap is 0.08mm-0.13mm, the position of base plate is difficult to overlap with the position of workpiece locating shaft, and on Digit Control Machine Tool after processing, bearing pin is difficult to ensure that relative to the positional precision of macropore in the middle of base plate with the installing hole of camshaft.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of drum brake base plate boring jig meeting Geometrical Tolerance Principle.
In order to solve the problems referred to above, the present invention by the following technical solutions:
A kind of drum brake base plate boring jig, including clamp bottom board, clamp bottom board is provided with bearing, vee-block base；
Vee-block base can slide on clamp bottom board, and the upper end of vee-block base is provided with the V-arrangement locating piece assembly that can move left and right；It is slidably connected between V-arrangement locating piece assembly and vee-block base；
The top of bearing is provided with workpiece taper locating shaft, is provided with compression axis in workpiece taper locating shaft, and the lower end of compression axis is fixed on workpiece taper locating shaft, and the upper end of compression axis is provided with tapered sleeve round clamp；
The taper location ringfeder that the conical surface matches it is provided with workpiece taper locating shaft between tapered sleeve round clamp with workpiece taper locating shaft.
The following is the present invention the further of such scheme is optimized:
Described taper location ringfeder is connected by tapered sleeve stop pin between workpiece taper locating shaft, and described tapered sleeve stop pin is obliquely installed.
Optimize further:
The side of vee-block base is provided with the positioning screw for promoting V-arrangement locating piece assembly to move left and right, and one end of positioning screw is provided with round shaft.
Optimize further: the position that the upper end of compression axis is positioned at above tapered sleeve round clamp is provided with pressing plate.
Optimize further: on the upper surface of workpiece taper locating shaft, be fixed with part workpiece support block.
Optimize further: between pressing plate and tapered sleeve round clamp, be provided with pressing plate guide finger.
Add man-hour, first back-plate to be processed is placed on fixture, because taper location ringfeder cylindrical is not also extruded swell, back-plate is easier to be placed on the ringfeder of taper location, then fastening nut, makes tapered sleeve round clamp stress move downward, and promotes taper location ringfeder to move downward along workpiece taper locating shaft axis under tapered sleeve stop pin guides, ringfeder cylindrical is radially even to be become larger to make taper position, the blind-mate location of the final central major aperture realized with base plate.
This location mode can be good at getting rid of the gap between bottom center hole and locating shaft, and can better ensure that the relative position of base plate processing Kong Yuqi central major aperture.
Then slewing circle handle, promotes V-arrangement locating piece assembly to left movement, realizes the location of the garden circumferential direction of back-plate after contacting with back-plate.Finally load onto pressing plate, make pressing plate compress downwards back-plate along pressing plate guide finger and just can be processed.
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the embodiment of the present invention；
Accompanying drawing 2 is the top view of accompanying drawing 1；
Accompanying drawing 3 is the enlarged drawing in accompanying drawing 1 at I；
Accompanying drawing 4 is P-P partial sectional view in accompanying drawing 2.
In figure:1-V shape block base；2-soket head cap screw；3-clamp bottom board；4-bearing；5-compression axis；6-workpiece taper locating shaft；7-workpiece support block；8-taper location ringfeder；9-tapered sleeve round clamp；10-packing ring；11-open washer；12-hexagon nut with flange；13-nut；14-pressing plate；15-V shape locating piece assembly；16-cover plate；17-round shaft；18-positioning screw；19-pressing plate guide finger；20-tapered sleeve stop pin.
Detailed description of the invention
Embodiment, as shown in Figure 1 and Figure 2, a kind of drum brake base plate boring jig, including clamp bottom board 3, clamp bottom board 3 is provided with bearing 4, vee-block base 1；
Vee-block base 1 can slide on clamp bottom board 3, is fixed with soket head cap screw 2 after good for position adjustment according to back-plate blank.
The upper end of vee-block base 1 is provided with the V-arrangement locating piece assembly 15 that can move left and right；It is slidably connected between V-arrangement locating piece assembly 15 and vee-block base 1.
V-arrangement locating piece assembly 15 slides in vee-block base 1 groove, and spacing with cover plate 16 in short transverse, cover plate 16 soket head cap screw is fixed on vee-block base 1.
The side of vee-block base 1 is provided with the positioning screw 18 for promoting V-arrangement locating piece assembly 15 to move left and right, and one end of positioning screw 18 is provided with round shaft 17.
Use interference fits between bearing 4 and clamp bottom board 3 and fix with soket head cap screw.
The top of bearing 4 is provided with workpiece taper locating shaft 6, uses interference fits and fix with soket head cap screw between workpiece taper locating shaft 6 and bearing 4.
In workpiece taper locating shaft 6, compression axis 5 is installed, interference fit is used between compression axis 5 and workpiece taper locating shaft 6, the lower end hexagon nut with flange of compression axis 5 is fixed on workpiece taper locating shaft 6, and the upper end of compression axis 5 is provided with tapered sleeve round clamp 9, packing ring 10, nut 13.
The upper end of compression axis 5 is positioned at the position above nut 13 and is provided with pressing plate 14, open washer 11 and hexagon nut with flange 12.
Being fixed with 6 workpiece support blocks 7 with soket head cap screw on the upper surface of workpiece taper locating shaft 6, after workpiece support block 7 is installed, grinding is contour relative to clamp base 3 lower plane to ensure.
The taper location ringfeder 8 that the conical surface matches it is provided with workpiece taper locating shaft 6 between tapered sleeve round clamp 9 with workpiece taper locating shaft 6, as shown in Figure 3, being connected by tapered sleeve stop pin 20 between described taper location ringfeder 8 and workpiece taper locating shaft 6, described tapered sleeve stop pin 20 is obliquely installed.
Workpiece taper locating shaft 6 coordinates face to add with taper location ringfeder 8 and joins work man-hour, it is ensured that coordinate face contact area not less than 80%.
The endoporus of taper location ringfeder 8 is processed as the taper hole of cone angle 22 °, and after processing, taper hole to be ensured is not more than 0.02mm with the axiality of its cylindrical.
Taper location ringfeder 8 uses 65Mn material to make, and adds tempering heat treatment through integral quenching, it is ensured that after symmetrical otch, endoporus and cylindrical are indeformable.
As shown in Figure 4, pressing plate guide finger 19 it is provided with between pressing plate 14 and tapered sleeve round clamp 9.
Add man-hour, first back-plate to be processed is placed on fixture, because taper location ringfeder 8 cylindrical is not also extruded swell, back-plate is easier to be placed on the ringfeder 8 of taper location, then fastening nut 13, make tapered sleeve round clamp 9 stress move downward, and promote taper location ringfeder 8 to move downward along workpiece taper locating shaft 6 axis under tapered sleeve stop pin 20 guides, ringfeder 8 cylindrical is radially even to be become larger to make taper position, the blind-mate location of the final central major aperture realized with base plate.
This location mode can be good at getting rid of the gap between bottom center hole and locating shaft, and can better ensure that the relative position of base plate processing Kong Yuqi central major aperture.
Then slewing circle handle 17, promotes V-arrangement locating piece assembly 15 to left movement, realizes the location of the garden circumferential direction of back-plate after contacting with back-plate.Finally load onto pressing plate 14 and open washer 11, rotate hexagon nut with flange 12, make pressing plate 14 compress downwards back-plate along pressing plate guide finger 19 and just can be processed.
Claims (1)
1. a drum brake base plate boring jig, including clamp bottom board (3), clamp bottom board (3) is provided with bearing (4), vee-block base (1)；
Vee-block base (1) can be in the upper slip of clamp bottom board (3), and the upper end of vee-block base (1) is provided with V-arrangement locating piece assembly (15) that can move left and right；It is slidably connected between V-arrangement locating piece assembly (15) and vee-block base (1)；
The top of bearing (4) is provided with workpiece taper locating shaft (6), compression axis (5) is installed in workpiece taper locating shaft (6), the lower end of compression axis (5) is fixed on workpiece taper locating shaft (6), and the upper end of compression axis (5) is provided with tapered sleeve round clamp (9), packing ring (10), nut (13)；
Taper location ringfeder (8) that the conical surface matches it is provided with workpiece taper locating shaft (6) between tapered sleeve round clamp (9) with workpiece taper locating shaft (6)；
The endoporus of taper location ringfeder (8) is processed as the taper hole of cone angle 22 °, and after processing, taper hole to be ensured is not more than 0.02mm with the axiality of its cylindrical；
Being connected by tapered sleeve stop pin (20) between described taper location ringfeder (8) and workpiece taper locating shaft (6), described tapered sleeve stop pin (20) is obliquely installed；
The side of vee-block base (1) is provided with the positioning screw (18) for promoting V-arrangement locating piece assembly (15) to move left and right, and one end of positioning screw (18) is provided with round shaft (17)；
The upper end of compression axis (5) is positioned at the position of tapered sleeve round clamp (9) top and is provided with pressing plate (14)；
6 workpiece support blocks (7) it are fixed with on the upper surface of workpiece taper locating shaft (6)；
Pressing plate guide finger (19) it is provided with between pressing plate (14) and tapered sleeve round clamp (9)；
Add man-hour, first back-plate to be processed is placed on fixture, because taper location ringfeder cylindrical is not also extruded swell, back-plate is easier to be placed on the ringfeder of taper location, then fastening nut, makes tapered sleeve round clamp stress move downward, and promotes taper location ringfeder to move downward along workpiece taper locating shaft axis under tapered sleeve stop pin guides, ringfeder cylindrical is radially even to be become larger to make taper position, the blind-mate location of the final central major aperture realized with base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310076168.6A CN103143951B (en) | 2013-03-11 | 2013-03-11 | Drum brake base plate boring jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310076168.6A CN103143951B (en) | 2013-03-11 | 2013-03-11 | Drum brake base plate boring jig |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103143951A CN103143951A (en) | 2013-06-12 |
| CN103143951B true CN103143951B (en) | 2016-08-03 |
Family
ID=48542415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310076168.6A Expired - Fee Related CN103143951B (en) | 2013-03-11 | 2013-03-11 | Drum brake base plate boring jig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103143951B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106514320A (en) * | 2017-01-19 | 2017-03-22 | 荆州市恒丰制动系统有限公司 | Brake baseplate machining fixture |
| CN109079627B (en) * | 2018-08-01 | 2024-03-22 | 青岛华瑞汽车零部件股份有限公司 | Self-centering device for grinding drum brake and use method thereof |
| CN110919430B (en) * | 2019-12-12 | 2021-03-16 | 安徽信息工程学院 | Boring clamp for hydraulically-driven adjustable piston |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3861692A (en) * | 1971-08-20 | 1975-01-21 | Borg Warner Stieber Gmbh | Collet and adjusting screw therefor |
| CN2865988Y (en) * | 2005-12-16 | 2007-02-07 | 中国重型汽车集团有限公司 | Drill clamping device |
| CN200981205Y (en) * | 2006-08-22 | 2007-11-28 | 南通纵横国际股份有限公司 | Hole and end surface simultaneously pressing clamp |
| CN201493505U (en) * | 2009-09-16 | 2010-06-02 | 青特集团有限公司 | Drum-type brake and brake-shoe anvil rivet hole tooling |
| CN202079414U (en) * | 2011-04-28 | 2011-12-21 | 上海飞华汽车部件有限公司 | Positioning jig for processing thin large-aperture disc type part |
| CN203076959U (en) * | 2013-03-11 | 2013-07-24 | 寿光市泰丰制动系统科技有限公司 | Clamp of drum type brake bottom plate bored hole |
-
2013
- 2013-03-11 CN CN201310076168.6A patent/CN103143951B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3861692A (en) * | 1971-08-20 | 1975-01-21 | Borg Warner Stieber Gmbh | Collet and adjusting screw therefor |
| CN2865988Y (en) * | 2005-12-16 | 2007-02-07 | 中国重型汽车集团有限公司 | Drill clamping device |
| CN200981205Y (en) * | 2006-08-22 | 2007-11-28 | 南通纵横国际股份有限公司 | Hole and end surface simultaneously pressing clamp |
| CN201493505U (en) * | 2009-09-16 | 2010-06-02 | 青特集团有限公司 | Drum-type brake and brake-shoe anvil rivet hole tooling |
| CN202079414U (en) * | 2011-04-28 | 2011-12-21 | 上海飞华汽车部件有限公司 | Positioning jig for processing thin large-aperture disc type part |
| CN203076959U (en) * | 2013-03-11 | 2013-07-24 | 寿光市泰丰制动系统科技有限公司 | Clamp of drum type brake bottom plate bored hole |
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| Publication number | Publication date |
|---|---|
| CN103143951A (en) | 2013-06-12 |
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| PB01 | Publication | ||
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Granted publication date: 20160803 Termination date: 20200311 |
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| CF01 | Termination of patent right due to non-payment of annual fee |