CN212094399U - Clamp for processing outer surface of tubular hollow workpiece - Google Patents
Clamp for processing outer surface of tubular hollow workpiece Download PDFInfo
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- CN212094399U CN212094399U CN202020764176.5U CN202020764176U CN212094399U CN 212094399 U CN212094399 U CN 212094399U CN 202020764176 U CN202020764176 U CN 202020764176U CN 212094399 U CN212094399 U CN 212094399U
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Abstract
The utility model provides a tubulose hollow work piece surface adds clamping apparatus belongs to machine tool spare part technical field. This tubulose hollow work piece surface adds clamping apparatus, including the tapering mandrel, collet chuck, the inflation taper sleeve, gasket and lock nut, the tapering mandrel includes axle stalk portion from the right side to a left side in proper order, location step portion, frustum portion, axle core portion, screw thread portion, the diameter of location step portion is greater than the internal diameter of tubulose hollow work piece and is less than the external diameter of tubulose hollow work piece, collet chuck's both ends are equipped with respectively with frustum portion, the internal conical surface of the external conical surface looks adaptation of inflation taper sleeve, collet chuck's external diameter suits with the internal diameter of tubulose hollow work piece, collet chuck's both ends all are equipped with a plurality of flutings along circumference, grooved length direction is along collet chuck's axial, lock nut cooperatees with screw thread portion and lock nut with the gasket pressure. The utility model is used for be used for the hollow work piece clamping of tubulose.
Description
Technical Field
The utility model belongs to the technical field of the machine tool component, especially, relate to a tubulose hollow workpiece surface adds clamping apparatus.
Background
The lathe fixture can be divided into two types, namely a universal lathe fixture and a special lathe fixture according to the size of the application range of the lathe fixture. The universal lathe fixture mainly comprises a self-centering chuck, a single-action chuck, a toggle center and the like. Such lathe fixtures have become fully standardized, commercial in industry, and commercially produced by specialized manufacturers. The special lathe fixture is divided into a spindle lathe fixture, a chuck lathe fixture and an angle iron lathe fixture according to different structural forms and different workpiece clamping modes. A special lathe fixture for processing the outer surface of a tubular hollow workpiece is designed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the technical problem and providing a clamp for processing the outer surface of a tubular hollow workpiece.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a clamp for processing the outer surface of a tubular hollow workpiece comprises a taper mandrel, an elastic chuck, an expansion taper sleeve, a gasket and a locking nut, wherein the taper mandrel sequentially comprises a shaft handle part, a positioning step part, a taper cone part, a shaft core part and a thread part from right to left, the diameter of the positioning step part is larger than the inner diameter of the tubular hollow workpiece and smaller than the outer diameter of the tubular hollow workpiece, the taper cone part is provided with an outer conical surface the diameter of which is gradually reduced from the positioning step part to the shaft core part, the inner diameter of the expansion taper sleeve is matched with the outer diameter of the shaft core part, the expansion taper sleeve is provided with an outer conical surface the diameter of which is gradually reduced from the thread part to the taper cone part, two ends of the elastic chuck are respectively provided with an inner conical surface matched with the taper cone part and the outer conical surface of the expansion taper sleeve, the outer diameter of the elastic chuck is matched with the inner diameter of, the length direction of the groove is along the axial direction of the elastic chuck, the locking nut is matched with the thread part, and the gasket is pressed on the expansion taper sleeve by the locking nut.
Preferably, the shaft core part is provided with guide pins arranged in the radial direction, and the expansion taper sleeve is provided with guide pin grooves corresponding to the guide pins.
Preferably, the slots at one end of the elastic chuck are staggered with the slots at the other end of the elastic chuck.
After the technical scheme is adopted, the utility model has the advantages of as follows:
the use method of the lathe fixture comprises the following steps: sleeving a tubular hollow workpiece into the taper mandrel, enabling one end of the tubular hollow workpiece to abut against the positioning step part, clamping the elastic chuck into the tubular hollow workpiece, extruding and expanding one end of the elastic chuck by the frustum part to clamp the inner surface of the tubular hollow workpiece, sleeving the expansion taper sleeve on the shaft core part, expanding the other end of the elastic chuck by the expansion taper sleeve to clamp the inner surface of the tubular hollow workpiece, screwing the locking nut, and pressing the gasket on the expansion taper sleeve. The utility model is used for the processing of the hollow work piece surface of tubulose can stabilize the hollow work piece of clamping tubulose, and the clamping mode is simple and convenient.
Drawings
Fig. 1 is a schematic structural view of a clamp for processing the outer surface of a tubular hollow workpiece according to the present invention;
FIG. 2 is a schematic structural view of the collet;
in the figure:
1-taper mandrel; 11-shaft shank; 12-a positioning step; 13-a frustum portion; 14-a shaft core; 15-a threaded portion; 2-elastic chuck; 21-slotting; 3-expanding the taper sleeve; 4-a guide pin; 5-a gasket; 6-locking the nut; 7-tubular hollow workpiece.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a clamp for processing the outer surface of a tubular hollow workpiece comprises: taper mandrel 1, collet 2, inflation taper sleeve 3, uide pin 4, gasket 5 and lock nut 6.
The taper mandrel 1 comprises a shaft shank 11, a positioning step part 12, a frustum part 13, a shaft core part 14 and a thread part 15 from right to left in sequence.
The positioning step part 12 is used for axial positioning of the tubular hollow workpiece 7, and the diameter of the positioning step part 12 is larger than the inner diameter of the tubular hollow workpiece 7 and smaller than the outer diameter of the tubular hollow workpiece 7.
The tapered portion 13 is provided with an outer tapered surface whose diameter is decreased toward the shaft core portion 14 by the positioning step portion 12.
The inner diameter of the expansion cone sleeve 3 is adapted to the outer diameter of the shaft core part 14, and the expansion cone sleeve 3 is provided with an outer conical surface with the diameter decreasing from the threaded part 15 to the conical table part 13.
As shown in fig. 1-2, the two ends of the collet 2 are respectively provided with an inner conical surface adapted to the outer conical surfaces of the cone portion 13 and the expansion cone sleeve 3. The outer diameter of the elastic chuck 2 is matched with the inner diameter of the tubular hollow workpiece 7, a plurality of grooves 21 are formed in the two ends of the elastic chuck 2 along the circumferential direction, and the length direction of each groove 21 is along the axial direction of the elastic chuck 2. The two ends of the elastic chuck 2 are expanded outwards under the extrusion force of the cone table part 13 and the expansion taper sleeve 3, and the inner surface of the tubular hollow workpiece 7 is clamped. The open slots 21 at one end of the elastic chuck 2 and the open slots 21 at the other end are arranged in a staggered manner, so that when the elastic chuck 2 clamps the tubular hollow workpiece 7, the maximum stress applied to the elastic chuck 2 is reduced, and the elastic chuck 2 is prevented from being broken at the open slots 21.
The locking nut 6 is matched with the threaded part 15, and the gasket 5 is pressed on the expansion taper sleeve 3 by the locking nut 6.
The shaft core part 14 is provided with guide pins 4 arranged in the radial direction, and the expansion taper sleeve 3 is provided with guide pin grooves corresponding to the guide pins 4. The guide pins 4 are inserted into the guide pin slots to restrict relative rotation between the expansion cone 3 and the taper mandrel 1.
The use method of the lathe fixture comprises the following steps: sleeving a tubular hollow workpiece 7 into the taper mandrel 1, enabling one end of the tubular hollow workpiece 7 to abut against the positioning step part 12, clamping the elastic chuck 2 into the tubular hollow workpiece 7, extruding and expanding one end of the elastic chuck 2 by the frustum part 12 to clamp the inner surface of the tubular hollow workpiece 7, sleeving the expansion taper sleeve 3 on the mandrel core part 14, expanding the other end of the elastic chuck 2 by the expansion taper sleeve 3 to clamp the inner surface of the tubular hollow workpiece 7, screwing the locking nut 6, and pressing the gasket 5 on the expansion taper sleeve 3.
In addition to the preferred embodiments described above, other embodiments of the present invention are also possible, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope of the present invention defined by the appended claims.
Claims (3)
1. The clamp for processing the outer surface of the tubular hollow workpiece is characterized by comprising a taper mandrel (1), an elastic chuck (2), an expansion taper sleeve (3), a gasket (5) and a locking nut (6), wherein the taper mandrel (1) sequentially comprises a shaft handle part (11), a positioning step part (12), a frustum part (13), a shaft core part (14) and a threaded part (15) from right to left, the diameter of the positioning step part (12) is larger than the inner diameter of the tubular hollow workpiece (7) and smaller than the outer diameter of the tubular hollow workpiece (7), the frustum part (13) is provided with an outer conical surface of which the diameter is gradually reduced from the positioning step part (12) to the shaft core part (14), the inner diameter of the expansion taper sleeve (3) is matched with the outer diameter of the shaft core part (14), the expansion taper sleeve (3) is provided with an outer conical surface of which the diameter is gradually reduced from the threaded part (15) to the frustum part (13), the both ends of collet (2) be equipped with respectively with frustum portion (13) the interior conical surface of the outer conical surface looks adaptation of inflation taper sleeve (3), the external diameter of collet (2) suits with the internal diameter of tubulose hollow workpiece (7), the both ends of collet (2) all are equipped with a plurality of flutings (21) along circumference, the length direction of fluting (21) is followed the axial of collet (2), lock nut (6) with screw thread portion (15) cooperate just lock nut (6) will gasket (5) pressure equipment is in on the inflation taper sleeve (3).
2. The clamp for processing the outer surface of the tubular hollow workpiece according to claim 1, characterized in that the shaft core part (14) is provided with guide pins (4) arranged radially, and the expansion taper sleeve (3) is provided with guide pin grooves corresponding to the guide pins (4).
3. The fixture for processing the outer surface of the tubular hollow workpiece according to claim 1 or 2, characterized in that the slots (21) at one end of the elastic collet (2) are staggered with the slots (21) at the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020764176.5U CN212094399U (en) | 2020-05-11 | 2020-05-11 | Clamp for processing outer surface of tubular hollow workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020764176.5U CN212094399U (en) | 2020-05-11 | 2020-05-11 | Clamp for processing outer surface of tubular hollow workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212094399U true CN212094399U (en) | 2020-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020764176.5U Active CN212094399U (en) | 2020-05-11 | 2020-05-11 | Clamp for processing outer surface of tubular hollow workpiece |
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| Country | Link |
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| CN (1) | CN212094399U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113399883A (en) * | 2021-07-02 | 2021-09-17 | 上海电气电站设备有限公司 | Method for inhibiting welding deformation of heat exchanger tube plate |
| CN114102290A (en) * | 2021-11-20 | 2022-03-01 | 重庆虎溪电机工业有限责任公司 | Small-sized revolving body internal expansion type machining clamp |
-
2020
- 2020-05-11 CN CN202020764176.5U patent/CN212094399U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113399883A (en) * | 2021-07-02 | 2021-09-17 | 上海电气电站设备有限公司 | Method for inhibiting welding deformation of heat exchanger tube plate |
| CN114102290A (en) * | 2021-11-20 | 2022-03-01 | 重庆虎溪电机工业有限责任公司 | Small-sized revolving body internal expansion type machining clamp |
| CN114102290B (en) * | 2021-11-20 | 2023-09-19 | 重庆虎溪电机工业有限责任公司 | Internal expansion type machining clamp for small-sized revolving body |
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