CN210981077U - Checking fixture for position degree of inner spherical surface of differential shell to reference straight hole - Google Patents
Checking fixture for position degree of inner spherical surface of differential shell to reference straight hole Download PDFInfo
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- CN210981077U CN210981077U CN202020039487.5U CN202020039487U CN210981077U CN 210981077 U CN210981077 U CN 210981077U CN 202020039487 U CN202020039487 U CN 202020039487U CN 210981077 U CN210981077 U CN 210981077U
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- dial indicator
- differential case
- measuring head
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Abstract
The utility model relates to a checking fixture for the position degree of a ball surface in a differential case to a reference straight hole, which comprises a dial indicator bracket and a dial indicator arranged at the end part of the dial indicator bracket, wherein the end part of the dial indicator bracket is provided with a measuring head, the dial indicator bracket is sleeved on the outer circle of a spigot of the differential case, the differential case is provided with two mutually corresponding straight holes, a core rod penetrates through the two straight holes, the core rod is provided with a taper hole, and a contact assembly is inserted into the taper hole to axially limit the core rod; the contact subassembly includes the contact and with contact fixed connection's spacing post, and in the taper hole of plug was inserted to spacing post, the contact contradicted the interior sphere of differential case, the tip of plug with the measuring head on the percentage table support is contradicted, and the flexible stroke of measuring head passes through the index feedback of percentage table. The checking fixture adopts on-line rapid detection, does not delay production, ensures the qualification of the spherical surface position degree in the differential case according to the data of detecting the spherical surface position degree in the differential case, can be checked at any time in all-day production, and has high speed and high accuracy.
Description
Technical Field
The utility model belongs to the technical field of machine part detection and specifically relates to an utensil is examined to ball-face reference word hole site degree in differential mechanism shell.
Background
The automobile is more and more extensive in production and life, the differential is an important part in the automobile, the structure and the processing precision of a shell directly influence the normal work of the differential, at present, the form and position tolerance of the automobile differential shell needs a three-coordinate measuring machine for detection, the detection time is long, waiting is needed during first detection every day, and the production is delayed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defect that prior art exists, provide an utensil is examined to ball-face reference word hole site degree in the differential mechanism shell.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
A checking fixture for the position degree of a ball surface in a differential case to a reference straight hole comprises a dial indicator support and a dial indicator arranged at the end part of the dial indicator support, wherein the end part of the dial indicator support is provided with a measuring head, the dial indicator support is sleeved on the outer circle of a spigot of the differential case, the differential case is provided with two mutually corresponding straight holes, a mandrel penetrates through the two straight holes, a taper hole is formed in the mandrel, and a contact assembly is inserted into the taper hole to axially limit the mandrel;
The contact subassembly includes the contact and with contact fixed connection's spacing post, and in the taper hole of plug was inserted to spacing post, the contact contradicted the interior sphere of differential case, the tip of plug with the measuring head on the percentage table support is contradicted, and the flexible stroke of measuring head passes through the index feedback of percentage table.
The position degree of the inner spherical surface of the differential shell facing the reference straight hole is detected, and the distance between the contact and the center of the core rod is 15 mm.
The contact is a ball shape.
The measuring head coincides with the central line of the core rod.
The inner spherical surface of the differential shell is opposite to the reference straight hole, the mandrel is in clearance fit with the straight hole, and the mandrel is horizontally arranged.
The utility model has the advantages that: when the checking fixture is operated, the core rod is rotated, the spherical contact mounted on the core rod is in contact with the inner spherical surface of the differential shell and rotates relative to the inner spherical surface of the differential shell, the pointer of the dial indicator jumps to read data, and the position degree of the inner spherical surface of the differential shell to the straight hole reference can be known.
Drawings
FIG. 1 is a schematic view of the mounting of the present invention to a differential carrier;
FIG. 2 is a schematic structural view of a differential case according to the present invention;
FIG. 3 is a schematic view of the differential case of the present invention when reference A is selected;
FIG. 4 is a schematic view of the contact and the plug of the present invention;
FIG. 5 is a schematic diagram of a comparison table I in the detection of the present invention;
Fig. 6 is a schematic diagram of a second comparison table in the detection of the present invention.
Detailed Description
As shown in fig. 1 and 2, the checking fixture for the position degree of the ball surface in the differential case facing the reference straight hole comprises a dial indicator support 1, a dial indicator 2 arranged at the end part of the dial indicator support 1, a measuring head 3 arranged at the end part of the dial indicator support 1, the dial indicator support 1 is sleeved on the outer circle of a spigot of a differential case 4, the differential case 4 is provided with two mutually corresponding straight holes 5, a core rod 6 penetrates through the two straight holes 5, the core rod 6 is provided with a taper hole, and a contact assembly is inserted into the taper hole to axially limit the core rod;
The contact assembly comprises a contact 7 and a limiting column 8 fixedly connected with the contact 7, the limiting column 8 is inserted into a taper hole of the core rod 6, the contact 7 props against an inner spherical surface 9 of the differential case 4, the end part of the core rod 6 props against the measuring head 3 on the dial indicator support, and the telescopic stroke of the measuring head 3 is fed back through an index of the dial indicator.
The contact 7 is spherical, the measuring head 3 is superposed with the central line of the core rod 6, the core rod 6 is in clearance fit with the straight hole 5, and the core rod 6 is horizontally arranged.
As shown in fig. 3 to 6, in operation, the straight hole 5 of the differential case is selected as a reference a, the core rod 6 is rotated, the ball-type contact 7 mounted on the core rod 6 is in contact with the inner spherical surface 9 of the differential case 4 and rotates relative to the inner spherical surface 9 of the differential case, the pointer of the dial indicator 2 jumps to read data, the distance between the contact 7 and the center of the core rod 6 is 15mm, and the position degree of the inner spherical surface 9 of the differential case relative to the reference of the straight hole 5 can be obtained by drawing. According to the deviation values of the position degrees, a comparison table is made, the jumping value of the dial indicator 2 in actual operation is checked from the comparison table, the position degree of the inner spherical surface 6 of the speed case to the reference of the straight hole 5 can be known, for example, the deviation between the center line of the spherical surface and the center line of the straight hole is 0.05, and the jumping of the computer drawing dial indicator is 0.0145+0.015= 0.0295. If the deviation between the spherical center line and the straight hole center line is 0.1, the computer drawing dial indicator jump is 0.0248+0.0306= 0.0554.
The checking fixture adopts on-line rapid detection, does not delay production, and timely adjusts machine tool parameters according to the data of detecting the spherical surface position degree in the differential case so as to ensure the qualification of the spherical surface position degree in the differential case, and can be checked at any time in all-day production, and has the advantages of high speed and high accuracy.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A checking fixture for the position degree of a ball surface in a differential case to a reference straight hole comprises a dial indicator support and a dial indicator arranged at the end part of the dial indicator support, wherein the end part of the dial indicator support is provided with a measuring head;
The contact subassembly includes the contact and with contact fixed connection's spacing post, and in the taper hole of plug was inserted to spacing post, the contact contradicted the interior sphere of differential case, the tip of plug with the measuring head on the percentage table support is contradicted, and the flexible stroke of measuring head passes through the index feedback of percentage table.
2. The tool of claim 1, wherein the contact is located 15mm from the center of the mandrel.
3. The tool of claim 1 or 2, wherein the contact is ball-type.
4. The tool of claim 3, wherein the measuring head is coincident with a centerline of the mandrel.
5. The tool of claim 1, wherein the mandrel is in clearance fit with the inline hole and the mandrel is horizontally disposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020039487.5U CN210981077U (en) | 2020-01-09 | 2020-01-09 | Checking fixture for position degree of inner spherical surface of differential shell to reference straight hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020039487.5U CN210981077U (en) | 2020-01-09 | 2020-01-09 | Checking fixture for position degree of inner spherical surface of differential shell to reference straight hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210981077U true CN210981077U (en) | 2020-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020039487.5U Active CN210981077U (en) | 2020-01-09 | 2020-01-09 | Checking fixture for position degree of inner spherical surface of differential shell to reference straight hole |
Country Status (1)
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| CN (1) | CN210981077U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114001615A (en) * | 2021-11-10 | 2022-02-01 | 方盛车桥（柳州）有限公司 | Rapid detection device and detection method for automobile differential shell |
-
2020
- 2020-01-09 CN CN202020039487.5U patent/CN210981077U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114001615A (en) * | 2021-11-10 | 2022-02-01 | 方盛车桥（柳州）有限公司 | Rapid detection device and detection method for automobile differential shell |
| CN114001615B (en) * | 2021-11-10 | 2023-09-19 | 方盛车桥（柳州）有限公司 | Rapid detection device and detection method for automobile differential mechanism shell |
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