CN112405029A - Clamp tool for machining outer circle and two side end faces of brake shoe - Google Patents
Clamp tool for machining outer circle and two side end faces of brake shoe Download PDFInfo
- Publication number
- CN112405029A CN112405029A CN202011263227.7A CN202011263227A CN112405029A CN 112405029 A CN112405029 A CN 112405029A CN 202011263227 A CN202011263227 A CN 202011263227A CN 112405029 A CN112405029 A CN 112405029A
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- China
- Prior art keywords
- limiting disc
- brake shoe
- machining
- fixture tool
- connecting column
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/08—Devices for clamping a plurality of workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to a fixture tool for machining the excircle and the end faces at two sides of a brake shoe, and belongs to the technical field of brake shoe production and machining. Comprises a front limiting disc and a rear limiting disc; a connecting column is arranged between the front limiting disc and the rear limiting disc; a cavity is arranged in the connecting column; a movable buckling block is arranged in the cavity; the movable buckling block can move along the radial direction and the axial direction of the connecting column; the movable buckling blocks are contacted with or separated from the arc-shaped rib plates on the inner sides of the brake shoe workpieces; a fixed convex edge is arranged between the cavity and the rear limiting disc; a fixing column is arranged on one side of the rear limiting disc close to the connecting column; a shaft sleeve hole of the brake shoe workpiece is inserted on the fixed column; an anti-slip sleeve is arranged on the outer side of the fixed column; the front limiting disc and the rear limiting disc are circumferentially provided with a plurality of positioning bosses. According to the shape design of the brake shoe, two brake shoe workpieces can be fixed simultaneously and subjected to subsequent processing. Because the fixed column and the movable buckling block act, the brake shoe workpiece can be stably placed in the tool, and deviation cannot occur in the machining process.
Description
Technical Field
The invention relates to a fixture tool, in particular to a fixture tool for machining the excircle and the end faces at two sides of a brake shoe, and belongs to the technical field of brake shoe production and machining.
Background
Although drum brakes are generally less expensive than disc brakes, they may experience inconsistent brake dynamics, control, and performance compared to conventional disc brakes. For example, drum brakes have a self-energizing feature. During braking, rotation of the brake drum applies a force that urges the leading shoe into engagement with the braking surface of the brake drum (while urging the trailing shoe out of engagement with the braking surface of the brake drum). This feature often results in the application of a braking force that is greater than desired at low speeds and less than desired at high speeds, and is particularly evident when using friction materials having relatively high coefficients of friction. Furthermore, this feature results in uneven braking forces applied by the leading and trailing shoes, with the difference in braking force applied by the shoes increasing with increasing coefficient of friction. This feature also results in uneven wear on the brake shoes. The machining precision of the outer end face of the brake shoe is directly related to the abrasion degree between the brake shoe and the brake pad, if the machining error is large, the outer end face of the brake shoe is uneven, the contact face of the outer end face of the brake shoe and the brake pad is uneven, and the service life of the brake pad is shortened. Therefore, in order to improve the overall machining accuracy of the brake shoe, it is necessary to improve the machining equipment for the outer end surface of the brake shoe.
Disclosure of Invention
In view of this, the invention aims to overcome the defects in the prior art, and provides the fixture tool for machining the outer circle and the end faces on two sides of the brake shoe, which has the advantages of simple and reasonable structure, high practical value, guaranteed machining precision and improved production efficiency.
In order to achieve the purpose, the invention provides a fixture tool for machining the outer circle and the end faces at two sides of a brake shoe, which comprises a front limiting disc and a rear limiting disc; a connecting column is arranged between the front limiting disc and the rear limiting disc; a cavity is arranged in the connecting column; a movable buckling block is arranged in the cavity; the movable buckling block can move along the radial direction and the axial direction of the connecting column; the movable buckling blocks are contacted with or separated from the arc-shaped rib plates on the inner sides of the brake shoe workpieces; a fixed convex edge is arranged between the cavity and the rear limiting disc; a fixing column is arranged on one side of the rear limiting disc close to the connecting column; a shaft sleeve hole of the brake shoe workpiece is inserted on the fixed column; an anti-slip sleeve is arranged on the outer side of the fixed column; a plurality of positioning bosses are arranged on the circumference of the front limiting disc and the rear limiting disc
Preferably, the front limiting disc and the rear limiting disc are fixedly arranged on two end faces of the connecting column through bolts; the outer diameters of the front limiting disc and the rear limiting disc are larger than the outer diameter of the connecting column.
The front limiting plate and the rear limiting plate are respectively contacted with the inner side surface of the brake shoe workpiece.
Preferably, the chambers are symmetrically arranged on the side end face of the connecting column; the movable buckling block is a rectangular block; one side of the movable buckling block close to the fixed convex edge is provided with a buckling groove.
The movable buckling blocks are used for pressing the arc-shaped rib plates of the brake shoe workpiece on the fixed convex edges.
Preferably, the inner side surface of the arc rib plate is abutted against the surface of the fixed convex edge; the arc-shaped rib plates are pressed on the fixed convex edges from outside to inside by the buckling grooves.
The fixed convex edge can enable two brake shoe workpieces which are symmetrically arranged to be located on the same plane.
Preferably, the positioning bosses are annularly arrayed on the front limiting disc and the rear limiting disc; the inner side surface of the brake shoe workpiece is in contact connection with the positioning boss.
The positioning boss is used for being matched with the inner contour of the brake shoe workpiece.
Preferably, the positioning bosses are arranged in a trapezoidal shape; the distribution radian among the positioning bosses is the same as the inner side radian of the brake shoe.
Preferably, the fixing columns are symmetrically arranged on the rear limiting disc; the anti-slip sleeve is a rubber sleeve; the fixed convex edge surface is arranged around the outer side of the connecting column.
The antiskid cover can increase the frictional force between braking hoof axle sleeve hole and the fixed column, when removing lock piece and work piece separation, avoids the work piece directly to drop.
Preferably, the surface of the fixing convex edge is parallel to the surfaces of the front limiting disc and the rear limiting disc.
Preferably, the two brake shoe workpieces are symmetrically arranged in the fixture tool.
According to the shape design of the brake shoe, two brake shoe workpieces can be fixed simultaneously and subjected to subsequent processing. Because the fixed column and the movable buckling block act, the brake shoe workpiece can be stably placed in the tool, and deviation cannot occur in the machining process. The position relation among the fixed column, the front/rear limiting disc and the movable buckling block can accurately limit the position of the brake shoe, and the accuracy of the processing position of the brake shoe is ensured.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view in another state of the present invention.
Fig. 3 is a schematic view of an assembly structure of the brake shoe workpiece and the invention.
In the figure, 1 is a front limiting disc, 2 is a rear limiting disc, 3 is a connecting column, 4 is a cavity, 5 is a movable buckling block, 5.1 is a buckling groove, 6 is a brake shoe workpiece, 7 is a fixed convex edge, 8 is a fixed column, 9 is an anti-skidding sleeve, and 10 is a positioning boss.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Terms used herein, including technical and scientific terms, have the same meaning as terms commonly understood by one of ordinary skill in the art, unless otherwise defined. It will be understood that terms defined in commonly used dictionaries have meanings that are consistent with their meanings in the prior art.
Referring to fig. 1-3, a fixture tool for processing the outer circle and the end faces at two sides of a brake shoe comprises a front limiting disc 1 and a rear limiting disc 2; a connecting column 3 is arranged between the front limiting disc 1 and the rear limiting disc 2; a cavity 4 is arranged in the connecting column 3; a movable buckling block 5 is arranged in the cavity 4; the movable buckling block 5 can move along the radial direction and the axial direction of the connecting column 3; the movable buckling block 5 is contacted with or separated from an arc rib plate at the inner side of the brake shoe workpiece 6; a fixed convex edge 7 is arranged between the cavity 4 and the rear limiting disc 2; a fixing column 8 is arranged on one side of the rear limiting disc 2 close to the connecting column; the shaft sleeve hole of the brake shoe workpiece is inserted on the fixed column 8; an anti-skid sleeve 9 is arranged on the outer side of the fixed column 8; the front limiting disc 1 and the rear limiting disc 2 are circumferentially provided with a plurality of positioning bosses 10.
Furthermore, the front limiting disc 1 and the rear limiting disc 2 are fastened and arranged on two end surfaces of the connecting column 3 through bolts; the outer diameters of the front limiting disc 1 and the rear limiting disc 2 are larger than the outer diameter of the connecting column.
In this embodiment, the front limiting plate 1 and the rear limiting plate 2 are detachably connected to the connecting column 3 by bolts, which is advantageous in that when the size of the workpiece to be processed changes, the corresponding front limiting plate 1 and the corresponding rear limiting plate 2 can be replaced for processing, and similarly, the movable buckling blocks 5 and the fixed columns 8 are also preferably replaceable. In other embodiments, the front limiting disk 1 and the rear limiting disk 2 can be manufactured integrally with the connecting column.
Furthermore, the chambers 4 are symmetrically arranged on the side end face of the connecting column; the movable buckling block 5 is a rectangular block; one side of the movable buckling block 5 close to the fixed convex edge is provided with a buckling groove 5.1.
In this embodiment, the movable fastening block 5 can be driven by various methods in conventional technical means, and when the workpiece needs to be pressed, the workpiece can be pressed on the fixed convex edge 7 by moving towards the rear limiting plate 2 (axial direction of the connecting column) and then moving towards the inside of the cavity (radial direction of the connecting column). When the hair is loosened, the hair is loosened in the reverse direction.
The preferred rectangle cell body that is of buckling groove 5.1, because the arc gusset plate thickness is slightly wider than fixed protruding edge 7, consequently, when removing the buckling piece and move towards back limiting plate 2 at first, the border of arc gusset plate is gone into to the buckling inslot, then moves the wide inside motion of cavity of lock orientation to with the buckling of arc gusset plate on fixed protruding edge 7.
Furthermore, the inner side surface of the arc rib plate is abutted against the surface of the fixed convex edge 7; the arc-shaped rib plates are pressed on the fixed convex edge 7 from outside to inside by the buckling grooves 5.1.
Furthermore, the positioning bosses 10 are annularly arrayed on the front limiting disc and the rear limiting disc; the inner side surface of the brake shoe workpiece is in contact connection with the positioning boss 10.
Furthermore, the positioning boss 10 is in a trapezoidal shape; the distribution radian among the positioning bosses 10 is the same as the inner side radian of the brake shoe.
In this embodiment, the positioning boss 10 can bear part of the weight of the brake shoe workpiece, so as to avoid the damage caused by the excessive weight borne by the fixing post 8 and the movable buckling block.
Furthermore, the fixing columns 8 are symmetrically arranged on the rear limiting disc 2; the anti-skid sleeve 9 is a rubber sleeve; the fixed convex edge 7 is arranged around the outer side of the connecting column.
Furthermore, the surface of the fixed convex edge 7 is parallel to the surfaces of the front limiting disc and the rear limiting disc.
In this embodiment, the surfaces of the fixed convex edges 7 are parallel to the surfaces of the front limiting disc and the rear limiting disc, so that two brake shoe tools can be ensured to be arranged on the same plane, and the brake shoe tools are not dislocated to cause inconsistency of processing positions.
Furthermore, the two brake shoe workpieces are symmetrically arranged in the fixture tool.
In this embodiment, the two brake shoe workpieces are respectively fixed in a limiting manner by the corresponding movable buckling blocks and the corresponding fixed columns, and the two brake shoe workpieces are arranged on the outer sides of the connecting columns in a cylinder-like manner.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The utility model provides a brake shoe excircle and both sides anchor clamps frock for terminal surface machining which characterized in that: comprises a front limiting disc (1) and a rear limiting disc (2); a connecting column (3) is arranged between the front limiting disc (1) and the rear limiting disc (2); a cavity (4) is arranged in the connecting column (3); a movable buckling block (5) is arranged in the chamber (4); the movable buckling block (5) can move along the radial direction and the axial direction of the connecting column (3); the movable buckling block (5) is contacted with or separated from an arc rib plate at the inner side of the brake shoe workpiece (6); a fixed convex edge (7) is arranged between the cavity (4) and the rear limiting disc (2); a fixing column (8) is arranged on one side of the rear limiting disc (2) close to the connecting column; the shaft sleeve hole of the brake shoe workpiece is inserted on the fixed column (8); an anti-skid sleeve (9) is arranged on the outer side of the fixed column (8); a plurality of positioning bosses (10) are arranged on the front limiting disc (1) and the rear limiting disc (2) in the circumferential direction.
2. The fixture tool for machining the outer circle and the end faces on the two sides of the brake shoe as claimed in claim 1, wherein the fixture tool is characterized in that: the front limiting disc (1) and the rear limiting disc (2) are fixedly arranged on two end faces of the connecting column (3) through bolts; the outer diameters of the front limiting disc (1) and the rear limiting disc (2) are larger than the outer diameter of the connecting column.
3. The fixture tool for machining the outer circle and the end faces on the two sides of the brake shoe as claimed in claim 1, wherein the fixture tool is characterized in that: the chambers (4) are symmetrically arranged on the side end face of the connecting column; the movable buckling block (5) is a rectangular block; one side of the movable buckling block (5) close to the fixed convex edge is provided with a buckling groove (5.1).
4. The fixture tool for machining the outer circle and the end faces on the two sides of the brake shoe as claimed in claim 3, wherein the fixture tool is characterized in that: the inner side surface of the arc rib plate is abutted against the surface of the fixed convex edge (7); the arc-shaped rib plates are pressed on the fixed convex edges (7) from outside to inside by the buckling grooves (5.1).
5. The fixture tool for machining the outer circle and the end faces on the two sides of the brake shoe as claimed in claim 1, wherein the fixture tool is characterized in that: the positioning bosses (10) are annularly arrayed on the front limiting disc and the rear limiting disc; the inner side surface of the brake shoe workpiece is in contact connection with the positioning boss (10).
6. The fixture tool for machining the outer circle and the end faces on the two sides of the brake shoe as claimed in claim 5, wherein the fixture tool is characterized in that: the positioning bosses (10) are arranged in a trapezoidal shape; the distribution radian among the positioning bosses (10) is the same as the inner side radian of the brake shoe.
7. The fixture tool for machining the outer circle and the end faces on the two sides of the brake shoe as claimed in claim 5, wherein the fixture tool is characterized in that: the fixing columns (8) are symmetrically arranged on the rear limiting disc (2); the anti-skid sleeve (9) is a rubber sleeve; the fixed convex edge (7) is arranged around the outer side of the connecting column.
8. The fixture tool for machining the outer circle and the end faces on the two sides of the brake shoe as claimed in claim 7, wherein the fixture tool is characterized in that: the surface of the fixed convex edge (7) is parallel to the surfaces of the front limiting disc and the rear limiting disc.
9. The fixture tool for machining the outer circle and the end faces on the two sides of the brake shoe as claimed in any one of claims 1 to 8, wherein: and the two brake shoe workpieces are symmetrically arranged in the fixture tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011263227.7A CN112405029B (en) | 2020-11-12 | 2020-11-12 | Clamp tool for machining outer circle and two side end faces of brake shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011263227.7A CN112405029B (en) | 2020-11-12 | 2020-11-12 | Clamp tool for machining outer circle and two side end faces of brake shoe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112405029A true CN112405029A (en) | 2021-02-26 |
| CN112405029B CN112405029B (en) | 2023-04-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011263227.7A Active CN112405029B (en) | 2020-11-12 | 2020-11-12 | Clamp tool for machining outer circle and two side end faces of brake shoe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112405029B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB620853A (en) * | 1946-05-01 | 1949-03-31 | John Washington Dearborn | Work-holding fixtures |
| DE1880553U (en) * | 1962-07-19 | 1963-10-10 | Frederick Arthur Bell | CLAMPING DEVICE. |
| GB0403091D0 (en) * | 2004-02-12 | 2004-03-17 | Automotive Prod Italia Sv Srl | Brake shoe hold down clip |
| CN203171285U (en) * | 2013-04-03 | 2013-09-04 | 湖北飞龙摩擦密封材料股份有限公司 | Brake shoe clamp |
| CN208592613U (en) * | 2018-09-06 | 2019-03-12 | 福建省巨盾机械制造有限公司 | A kind of heavy forklift brake shoes arc surface fixer for machining |
| CN110977556A (en) * | 2019-12-25 | 2020-04-10 | 吉林东光奥威汽车制动系统有限公司 | Tensioning mechanism for brake shoe machining |
| CN210306881U (en) * | 2019-07-08 | 2020-04-14 | 荆州市恒丰制动系统有限公司 | Clamp assembly for automobile brake shoe |
| CN211387839U (en) * | 2019-11-30 | 2020-09-01 | 山东力得汽车科技股份有限公司 | Machining center machining clamp for automobile brake shoe |
-
2020
- 2020-11-12 CN CN202011263227.7A patent/CN112405029B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB620853A (en) * | 1946-05-01 | 1949-03-31 | John Washington Dearborn | Work-holding fixtures |
| DE1880553U (en) * | 1962-07-19 | 1963-10-10 | Frederick Arthur Bell | CLAMPING DEVICE. |
| GB0403091D0 (en) * | 2004-02-12 | 2004-03-17 | Automotive Prod Italia Sv Srl | Brake shoe hold down clip |
| CN203171285U (en) * | 2013-04-03 | 2013-09-04 | 湖北飞龙摩擦密封材料股份有限公司 | Brake shoe clamp |
| CN208592613U (en) * | 2018-09-06 | 2019-03-12 | 福建省巨盾机械制造有限公司 | A kind of heavy forklift brake shoes arc surface fixer for machining |
| CN210306881U (en) * | 2019-07-08 | 2020-04-14 | 荆州市恒丰制动系统有限公司 | Clamp assembly for automobile brake shoe |
| CN211387839U (en) * | 2019-11-30 | 2020-09-01 | 山东力得汽车科技股份有限公司 | Machining center machining clamp for automobile brake shoe |
| CN110977556A (en) * | 2019-12-25 | 2020-04-10 | 吉林东光奥威汽车制动系统有限公司 | Tensioning mechanism for brake shoe machining |
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| Publication number | Publication date |
|---|---|
| CN112405029B (en) | 2023-04-14 |
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