CN214199960U - Brake shoe excircle straightness accuracy examines utensil - Google Patents
Brake shoe excircle straightness accuracy examines utensil Download PDFInfo
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- CN214199960U CN214199960U CN202120283023.3U CN202120283023U CN214199960U CN 214199960 U CN214199960 U CN 214199960U CN 202120283023 U CN202120283023 U CN 202120283023U CN 214199960 U CN214199960 U CN 214199960U
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- brake shoe
- positioning
- mandrel
- dial indicator
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Abstract
The utility model provides a brake shoe excircle straightness accuracy testing fixture, which comprises two positioning blocks which are arranged oppositely, wherein two mandrel mounting holes are arranged in parallel at the same height position on the upper part of each positioning block, a limiting bulge is arranged in the middle of the inner side of each positioning block, and a compression screw from outside to inside is arranged on each positioning block right below the corresponding limiting bulge; the two positioning blocks are connected through two mandrels which are arranged in the mandrel mounting holes in a penetrating mode, and the positioning block on one side is connected with the mandrel in a sliding fit mode; the two mandrels are provided with meter mounting blocks in sliding fit, and the meter mounting blocks are inserted with dial indicators and fixed through screws. The utility model discloses simple structure, convenient to use, dismouting maintenance convenience. The two ends of the brake shoe are kept horizontal through compression of the compression screws, and meanwhile, the dial indicator only moves in the horizontal direction and cannot rotate through the two spindle connecting devices, namely, the running track of the measuring head is a straight line, so that the accuracy of the straightness measuring data of the excircle of the brake shoe is guaranteed.
Description
Technical Field
The utility model relates to a brake shoe detects technical field, concretely relates to utensil is examined to brake shoe excircle straightness accuracy.
Background
The automobile brake is an important part for ensuring the safe running of an automobile, and the automobile brake has higher and higher requirements on the straightness accuracy processing and detection accuracy of the outer arc surface of the brake shoe. The existing straightness checking fixture for the excircle cambered surface of the brake shoe is complex in structure, the brake shoe is usually placed on a special fixture for detection, and the brake shoe is taken down after the detection is finished. The gauge has the defects of relatively high cost, incapability of moving at any time and at any place and incapability of detecting the straightness of the brake shoe at any time and at any place.
Disclosure of Invention
In order to detect brake shoe excircle straightness accuracy more conveniently, the utility model provides an utensil is examined to brake shoe excircle straightness accuracy.
Therefore, the technical scheme of the utility model is that: the utility model provides an utensil is examined to brake shoe excircle straightness accuracy which characterized in that: the brake shoe positioning device comprises two positioning blocks which are oppositely arranged, wherein the width of the upper part of the inner side of each positioning block is smaller than that of the lower part of each positioning block to form a step surface, two mandrel mounting holes which are spaced are symmetrically arranged at the same height position of the upper part of each positioning block side by side, a limiting bulge is arranged at the step position of each positioning block in a manner of extending towards the positioning block at the other side in an extending manner, a penetrating threaded hole is formed in the positioning block right below the limiting bulge, a compression screw which extends towards the positioning block at the other side is mounted in the threaded hole, and the bottom surface of the limiting bulge, the inner side surface of each positioning block and the compression screw are matched to form clamping limiting parts at two sides of the outer arc surface of the brake shoe to be detected;
the two positioning blocks are connected through two mandrels penetrating through the mandrel mounting holes, wherein the positioning block on one side is fixedly connected with the mandrel, and the positioning block on the other side is connected with the mandrel in a sliding fit manner and is fixedly connected through a screw arranged on the side wall of the positioning block;
the two mandrels are provided with meter mounting blocks in sliding fit, a through dial indicator mounting hole is arranged in the vertical direction of the center of the meter mounting block between the two mandrels, and the dial indicator mounting hole is inserted with a dial indicator and is fixed by a screw arranged on the wall of the dial indicator mounting hole;
when the brake shoe positioning device is used, the bottom surfaces of the limiting bulges of the two positioning blocks are matched with the compression screws through adjusting the positioning blocks in sliding fit on the mandrel, the two sides of the outer arc surface of the brake shoe to be detected are clamped and attached, the compression screws at the lower parts of the positioning blocks at the two sides are screwed, and the positioning blocks in sliding fit are fixed through the screws; and a measuring rod of the dial indicator penetrates through a dial indicator mounting hole on the dial indicator mounting block, the dial indicator mounting block is pressed tightly by using a screw, then the dial indicator mounting block is shifted to drive the dial indicator to slide from one end of the mandrel to the other end, and the difference between the maximum value and the minimum value displayed by the dial indicator is the straightness of the section.
Preferably, the meter mounting block is of a cuboid structure, two through holes corresponding to the shaft core are formed in the side wall along the length direction, and the meter mounting block penetrates through the shaft core through the through holes. The dress table piece is worn to establish on two dabbers, makes dress table piece remove steadily, can only follow the horizontal direction and remove, can not take place to rotate, and the percentage table is installed in the central point of the diagonal of two through hole central lines and is put simultaneously, guarantees the vertical direction of percentage table measuring head to guarantee the precision of detecting.
Preferably, the compression screws and the screws are provided with handles, so that the operation is convenient.
Has the advantages that: the utility model discloses simple structure, convenient to use, dismouting maintenance convenience. The two ends of the brake shoe are kept horizontal through compression of the compression screws, and meanwhile, the dial indicator only moves in the horizontal direction and cannot rotate through the two spindle connecting devices, namely, the running track of the measuring head is a straight line, so that the accuracy of the straightness measuring data of the excircle of the brake shoe is guaranteed.
Drawings
Fig. 1 is a structural view of the present invention.
Fig. 2 is a top cross-sectional view of fig. 1.
Fig. 3 is a schematic view of the present invention in a use state.
Fig. 4 is a structural diagram of the brake shoe of the present invention.
Fig. 5 is a right side view of fig. 4.
Shown in the figure: 1. positioning blocks; 11. a step surface; 12. a limiting bulge; 2. a compression screw; 3. a mandrel; 4. a screw; 5. installing a meter block; 6. a dial indicator; 7. and (4) screws.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings, but the embodiment should not be construed as limiting the present invention.
The utility model discloses as shown in fig. 1 to 3:
a brake shoe excircle straightness detection tool comprises two opposite positioning blocks 1, wherein the width of the upper part of the inner side of each positioning block is smaller than that of the lower part of each positioning block to form a step surface 11 (the upper part of the inner side of each positioning block is provided with the step surface for preventing a dial indicator from interfering when moving to two ends, the upper parts of the positioning blocks are symmetrically provided with two spaced mandrel mounting holes side by side at the same height position, the step surfaces 11 of the positioning blocks extend towards the positioning block at the other side and are provided with limiting bulges 12, the positioning blocks right below the limiting bulges are provided with penetrating threaded holes, the threaded holes are internally provided with compression screws 2 with handles, the compression screws extend towards the positioning blocks at the other side, and the bottom surfaces of the limiting bulges, the inner side surfaces of the positioning blocks and the compression screws are matched to form clamping limiting parts at two sides of the excircle cambered surface of a brake shoe H to be detected;
the two positioning blocks 1 are connected through two mandrels 3 which are arranged in mandrel mounting holes in a penetrating mode, the positioning block on one side is fixedly connected with the mandrel through a countersunk head screw, and the positioning block on the other side is connected with the mandrel in a sliding fit mode and is fixedly connected through a screw 4 with a handle and arranged on the side wall of the positioning block;
the two mandrels 3 are provided with meter installing blocks 5 in sliding fit, the vertical direction of the center of the meter installing block between the two mandrels is provided with a through dial indicator installing hole, and the dial indicator installing hole is inserted with a dial indicator 6 and is fixed by a screw 7 with a handle arranged on the hole wall of the dial indicator installing hole;
the meter mounting block is of a cuboid structure, two through holes corresponding to the shaft core are formed in the side wall in the length direction, the meter mounting block penetrates through the shaft core through the through holes, and the dial indicator mounting holes are formed in the intersecting positions of the diagonals of the center lines of the two through holes of the meter mounting block and in the wall of the dial indicator mounting hole and are provided with through screw mounting holes.
The utility model discloses a theory of operation:
when the brake shoe positioning device is used, the bottom surfaces of the limiting bulges of the two positioning blocks are matched with the compression screws through adjusting the positioning blocks in sliding fit on the mandrel, and the two positioning blocks are clamped at two sides of the outer arc surface of the brake shoe to be detected (the bottom surfaces of the limiting bulges are attached to the outer arc surface of the brake shoe, and two sides of the outer arc surface of the shoe are abutted against the inner sides of the positioning blocks), the compression screws at the lower parts of the positioning blocks at two sides are screwed, and the positioning blocks in sliding fit are fixed through the screws; and the dial indicator penetrates through a dial indicator mounting hole on the indicator mounting block, the dial indicator is tightly pressed by using a screw, then the indicator mounting block is shifted to drive the dial indicator to slide from one end of the mandrel to the other end, and the difference between the maximum value and the minimum value displayed by the dial indicator is the straightness of the section.
Those skilled in the art will appreciate that the details of the present invention are not described in detail herein.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (3)
1. The utility model provides an utensil is examined to brake shoe excircle straightness accuracy which characterized in that: the brake shoe positioning device comprises two positioning blocks which are oppositely arranged, wherein the width of the upper part of the inner side of each positioning block is smaller than that of the lower part of each positioning block to form a step surface, two mandrel mounting holes which are spaced are symmetrically arranged at the same height position of the upper part of each positioning block side by side, a limiting bulge is arranged in a manner of extending towards the positioning block on the other side along the step surface of each positioning block, a penetrating threaded hole is formed in the positioning block right below the limiting bulge, a compression screw which extends towards the positioning block on the other side is mounted in the threaded hole, and the bottom surface of the limiting bulge, the inner side surface of each positioning block and the compression screw are matched to form clamping limiting parts of two outer circle edges of the cambered surface of the brake shoe to be detected;
the two positioning blocks are connected through two mandrels penetrating through the mandrel mounting holes, wherein the positioning block on one side is fixedly connected with the mandrel, and the positioning block on the other side is connected with the mandrel in a sliding fit manner and is fixedly connected through a screw arranged on the side wall of the positioning block;
the two mandrels are provided with meter installing blocks in sliding fit, the vertical direction of the center of the meter installing block between the two mandrels is provided with a through dial indicator installing hole, and the dial indicator installing hole is inserted with a dial indicator and is fixed by a screw arranged on the hole wall of the dial indicator installing hole.
2. The brake shoe outer circle straightness inspection tool according to claim 1, characterized in that: the meter installing block is of a cuboid structure, two through holes corresponding to the shaft core are formed in the side wall in the length direction, and the meter installing block penetrates through the shaft core through the through holes.
3. The brake shoe outer circle straightness gauge according to claim 1 or 2, characterized in that: the compression screws and the screws are provided with handles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120283023.3U CN214199960U (en) | 2021-02-01 | 2021-02-01 | Brake shoe excircle straightness accuracy examines utensil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120283023.3U CN214199960U (en) | 2021-02-01 | 2021-02-01 | Brake shoe excircle straightness accuracy examines utensil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214199960U true CN214199960U (en) | 2021-09-14 |
Family
ID=77638572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120283023.3U Active CN214199960U (en) | 2021-02-01 | 2021-02-01 | Brake shoe excircle straightness accuracy examines utensil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214199960U (en) |
-
2021
- 2021-02-01 CN CN202120283023.3U patent/CN214199960U/en active Active
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