CN210475592U - Inner hole positioning workpiece and expanding device - Google Patents
Inner hole positioning workpiece and expanding device Download PDFInfo
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- CN210475592U CN210475592U CN201921553930.4U CN201921553930U CN210475592U CN 210475592 U CN210475592 U CN 210475592U CN 201921553930 U CN201921553930 U CN 201921553930U CN 210475592 U CN210475592 U CN 210475592U
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Abstract
The utility model relates to a hole location work piece and tight device that expands includes: center pin 1, lathe press from both sides tight position 2, axial positioning step 3, work piece hole location cylinder 4, work piece 5, the tight rubber sleeve 6 that expands, movable positioning compresses tightly cover 7, gland nut 8 and centre bore 9, characterized by: when the compression nut 8 is screwed down, the movable positioning compression sleeve 7 transmits pressure to the expansion rubber sleeve 6, so that the expansion rubber sleeve 6 deforms along the radial direction, the workpiece 5 is expanded, the positioning and clamping purpose is achieved, after the compression is screwed down, the expansion rubber sleeve 6 generates axial thrust for the compression nut 8, the compression nut 8 cannot loosen, when the compression nut 8 is unscrewed, energy stored when the expansion rubber sleeve 6 is compressed is released, the movable positioning compression sleeve 7 is pushed to return to the original position, and the next workpiece can be clamped. The device for positioning and expanding the workpiece in the inner hole is reasonable in design, convenient to clamp, high in repeated positioning precision, practical and convenient.
Description
Technical Field
The utility model relates to a hole location work piece and tight device that expands.
Background
At present, when disc sleeve type parts are machined, for example, an outer circle and an end face are positioned and turned by an inner hole of an oil cylinder or a guide sleeve. The inner hole clamping device is used for clamping a workpiece outwards, and the inner hole clamping device is used for clamping the workpiece outwards, so that the surface of the inner hole is easy to be injured and easy to clamp and deform when the workpiece is tensioned, and the inner hole clamping device cannot be used for workpieces with high requirements at all. Another way is to put the central shaft through the inner hole of the workpiece and then clamp it with an axial force, which has the following disadvantages: firstly, when pressing from both sides tight work piece, have a splint to press the terminal surface at the work piece, make the terminal surface can not process, can only process the excircle, make the range of work receive the restriction, secondly not be fit for just reversing the rotatory work piece, make the work piece not hard up easily. Thirdly, clamping each workpiece in batch production needs to take down the clamping plate, and the production efficiency is influenced. .
Disclosure of Invention
The utility model aims at: the inner hole positioning and expanding device is designed, when the workpiece is clamped, the inner hole is positioned and expanded, the inner surface of the workpiece is not damaged, the clamping is convenient, and after the workpiece is clamped, the cutting processing can be carried out on the outer circle surface and the end surface of the workpiece, so that the production efficiency is greatly improved, and the precision of the product can be ensured.
The utility model provides a technical scheme that its technical problem adopted is:
an apparatus for locating and tensioning a workpiece in an internal bore, comprising: the automatic lathe positioning device comprises a central shaft 1, a lathe clamping position 2, an axial positioning step 3, a workpiece inner hole positioning cylindrical surface 4, a workpiece 5, an expansion rubber sleeve 6, a movable positioning pressing sleeve 7, a pressing nut 8 and a central hole 9.
The central shaft 1 is provided with a lathe clamping position 2, an axial positioning step 3, a workpiece inner hole positioning cylindrical surface 4 and a central hole 9.
The inner hole positioning cylindrical surface 4 of the workpiece on the movable positioning pressing sleeve 7 and the inner hole positioning cylindrical surface 4 of the workpiece on the central shaft 1 form two-point positioning to position the inner hole of the workpiece 5, and the workpiece 5 is axially positioned on the axial positioning step 3.
The lathe clamping position 2 on the central shaft 1 is clamped on a lathe chuck, and the central hole 9 is propped against the tailstock of the lathe.
The inner hole of the movable positioning compression sleeve 7 is in precise sliding fit with the mandrel of the central shaft 1 and can axially slide along the central shaft 1, the expansion rubber sleeve 6 is axially clamped between the movable positioning compression sleeve 7 and the central shaft 1, and the compression nut 8 is pressed on the end face of the movable positioning compression sleeve 7 through threads on the central shaft.
When the compression nut 8 is screwed down, the movable positioning compression sleeve 7 transmits pressure to the expansion rubber sleeve 6, so that the expansion rubber sleeve 6 deforms along the radial direction, the workpiece 5 is expanded, the positioning and clamping purpose is achieved, after the compression is screwed down, the expansion rubber sleeve 6 generates axial thrust for the compression nut 8, the compression nut 8 cannot loosen, when the compression nut 8 is unscrewed, energy stored when the expansion rubber sleeve 6 is compressed is released, the movable positioning compression sleeve 7 is pushed to return to the original position, and the next workpiece can be clamped.
The utility model has the advantages that: the inner surface of the workpiece is not damaged during clamping, the clamping is convenient, the outer circle surface and the end surface of the workpiece can be cut after the clamping is finished, the production efficiency is greatly improved, and the method is suitable for mass production.
The repeated positioning precision is high, the clamping cannot be loosened after the clamping is finished, the clamping is not easy to deform, and the quality is reliable.
The device has wide application and can be used for positioning and clamping the oil cylinder guide sleeve, the piston and the gear hobbing, and the like.
The present invention will be described in detail with reference to the accompanying drawings.
Drawings
FIG. 1: a structural drawing of a device for positioning and expanding a workpiece in an inner hole.
FIG. 2 is a drawing: a device for positioning and expanding a workpiece in an inner hole.
In the drawings: the method comprises the following steps of 1, a central shaft, 2, a lathe clamping position, 3, an axial positioning step, 4, a workpiece inner hole positioning cylindrical surface, 5, a workpiece, 6, an expansion rubber sleeve, 7, a movable positioning pressing sleeve, and 8, a pressing nut and a central hole.
Detailed Description
As shown in the attached figure 1 of the specification, a lathe clamping position 2, an axial positioning step 3, a workpiece inner hole positioning cylindrical surface 4 and a central hole 9 are arranged on a central shaft 1.
As shown in the attached figure 1 of the specification, two-point positioning is formed between a workpiece inner hole positioning cylindrical surface 4 on a movable positioning pressing sleeve 7 and the workpiece inner hole positioning cylindrical surface 4 on a central shaft 1, so that an inner hole of a workpiece 5 is positioned, and the workpiece 5 is axially positioned on an axial positioning step 3.
The attached figure 1 of the specification shows that a lathe clamping position 2 on a central shaft 1 is clamped on a lathe chuck, and a central hole 9 is propped against a tailstock of a machine tool.
As shown in the attached figure 1 of the specification, an inner hole of the movable positioning pressing sleeve 7 is in precise sliding fit with a mandrel of the central shaft 1 and can axially slide along the central shaft 1, the expansion rubber sleeve 6 is clamped between the movable positioning pressing sleeve 7 and the central shaft 1 in the axial direction, and the pressing nut 8 is pressed on the end face of the movable positioning pressing sleeve 7 through threads on the central shaft.
The attached figure 1 of the specification is as follows: when the compression nut 8 is screwed down, the movable positioning compression sleeve 7 transmits pressure to the expansion rubber sleeve 6, so that the expansion rubber sleeve 6 deforms along the radial direction, the workpiece 5 is expanded, the positioning and clamping purpose is achieved, after the compression is screwed down, the expansion rubber sleeve 6 generates axial thrust for the compression nut 8, the compression nut 8 cannot loosen, when the compression nut 8 is unscrewed, energy stored when the expansion rubber sleeve 6 is compressed is released, the movable positioning compression sleeve 7 is pushed to return to the original position, and the next workpiece can be clamped.
When a compression nut 8 is screwed down, a movable positioning compression sleeve 7 transmits pressure to an expansion rubber sleeve 6, so that the expansion rubber sleeve 6 deforms along the radial direction, a workpiece 5 is expanded to achieve the purposes of positioning and clamping, after the compression is screwed down, the expansion rubber sleeve 6 generates axial thrust for the compression nut 8, the compression nut 8 cannot loosen, when the compression nut 8 is screwed down, energy stored when the expansion rubber sleeve 6 is compressed is released, the movable positioning compression sleeve 7 is pushed to return to the original position, and the next workpiece can be clamped. The device for positioning and expanding the workpiece in the inner hole is reasonable in design, convenient to clamp, high in repeated positioning precision, practical and convenient.
Claims (1)
1. An apparatus for locating and tensioning a workpiece within an internal bore, comprising: center pin (1), lathe press from both sides tight position (2), axial positioning step (3), work piece hole location face of cylinder (4), work piece (5), bloated tight rubber sleeve (6), movable positioning compresses tightly cover (7), gland nut (8) and centre bore (9), characterized by: a lathe clamping position (2), an axial positioning step (3), a workpiece inner hole positioning cylindrical surface (4) and a central hole (9) are arranged on a central shaft (1), the workpiece inner hole positioning cylindrical surface (4) on a movable positioning pressing sleeve (7) and the workpiece inner hole positioning cylindrical surface (4) on the central shaft (1) form two-point positioning to position an inner hole of a workpiece (5), the workpiece (5) is axially positioned on the axial positioning step (3), the lathe clamping position (2) on the central shaft (1) is clamped on a lathe chuck, the central hole (9) is pressed against a tailstock of a machine tool, an inner hole of the movable positioning pressing sleeve (7) and a mandrel of the central shaft (1) adopt precise sliding fit and can axially slide along the central shaft (1), the movable positioning pressing sleeve (7) and the central shaft (1) clamp an expansion rubber sleeve (6) in the middle along the axial direction, a pressing nut (8) is pressed on the end surface of the movable positioning pressing sleeve (7) through threads on the central shaft, when the compression nut (8) is screwed down, the movable positioning compression sleeve (7) transmits pressure to the expansion rubber sleeve (6), so that the expansion rubber sleeve (6) deforms along the radial direction, the workpiece (5) is expanded, the purposes of positioning and clamping are achieved, after the expansion rubber sleeve (6) is screwed down, axial thrust is generated for the compression nut (8), the compression nut (8) cannot be loosened, when the compression nut (8) is unscrewed, energy stored when the expansion rubber sleeve (6) is compressed is released, the movable positioning compression sleeve (7) is pushed to return to the original position, and clamping of the next workpiece can be carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921553930.4U CN210475592U (en) | 2019-09-18 | 2019-09-18 | Inner hole positioning workpiece and expanding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921553930.4U CN210475592U (en) | 2019-09-18 | 2019-09-18 | Inner hole positioning workpiece and expanding device |
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| Publication Number | Publication Date |
|---|---|
| CN210475592U true CN210475592U (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921553930.4U Active CN210475592U (en) | 2019-09-18 | 2019-09-18 | Inner hole positioning workpiece and expanding device |
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| CN (1) | CN210475592U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449616A (en) * | 2019-09-18 | 2019-11-15 | 湖北咸宁三合机电股份有限公司 | A kind of Internal hole positioning workpiece and the device of swelling |
-
2019
- 2019-09-18 CN CN201921553930.4U patent/CN210475592U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449616A (en) * | 2019-09-18 | 2019-11-15 | 湖北咸宁三合机电股份有限公司 | A kind of Internal hole positioning workpiece and the device of swelling |
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