CN211277539U - Frock clamp for external screw thread work piece - Google Patents
Frock clamp for external screw thread work piece Download PDFInfo
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- CN211277539U CN211277539U CN201922180877.4U CN201922180877U CN211277539U CN 211277539 U CN211277539 U CN 211277539U CN 201922180877 U CN201922180877 U CN 201922180877U CN 211277539 U CN211277539 U CN 211277539U
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Abstract
The utility model discloses a frock clamp for external thread workpiece, which comprises a head part and a clamping part connected with the bottom end of the head part, wherein the outer diameter of the head part is larger than the outer diameter of the clamping part, the head part and the clamping part are provided with a first axial through hole, and the side wall of the first axial through hole positioned at the upper end of the head part and the clamping part is provided with an internal thread matched with the external thread of the external thread workpiece; the head part and the clamping part are also provided with first axial elongated grooves, and the first axial elongated grooves axially penetrate through the head part and the clamping part and radially penetrate through one side wall of the first axial through hole. The utility model provides a frock clamp for external screw thread work piece has adopted the dual clamping of screw-thread fit and elasticity centre gripping, can fasten the centre gripping with external screw thread work piece, adopts screw-thread fit moreover, can prevent to press from both sides the external screw thread of work piece and hinder, can solve the problem of both ends screw thread decentraction among the prior art in the processing of double thread connector well moreover.
Description
Technical Field
The utility model belongs to the technical field of the machining frock, concretely relates to frock clamp for external screw thread work piece.
Background
An external thread workpiece in the prior art is a common double-thread connector as shown in fig. 1, a hexagonal connecting surface 11 and a cylindrical connecting surface 12 are arranged in the middle of the external thread workpiece, a method of firstly processing a thread at one end on a machine tool and then processing a thread at the other end is generally adopted for processing the threads at the two ends, when the threads at the other end are processed, a method of clamping the middle hexagonal connecting surface is adopted in the prior art, however, the hexagonal connecting surface is too short, a clamp cannot be clamped, the external thread workpiece is easy to move in the processing process, the threads at the two ends are not concentric, even a product drops off, and the traditional clamp is generally a plane clamp.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a frock clamp for external screw thread work piece just in order to solve the not enough of prior art.
The purpose of the utility model is realized by the following technical scheme:
a tool clamp for an external thread workpiece comprises a head part and a clamping part connected with the bottom end of the head part, wherein the outer diameter of the head part is larger than that of the clamping part, the head part and the clamping part are provided with first axial through holes, and the side wall of the first axial through hole positioned at the upper ends of the head part and the clamping part is provided with internal threads matched with the external threads of the external thread workpiece; the head part and the clamping part are also provided with first axial elongated grooves, and the first axial elongated grooves axially penetrate through the head part and the clamping part and radially penetrate through one side wall of the first axial through hole.
Preferably, the clamping device further comprises a connecting part located between the head part and the clamping part, and the outer diameter of the connecting part is smaller than that of the clamping part.
Preferably, the head and the clamping portion are further provided with a second axial elongated slot and a second axial through hole, the second axial elongated slot axially penetrates through the head and the clamping portion, and the first axial through hole and the second axial through hole are communicated in the radial direction.
Preferably, the number of the second axial long grooves and the second axial through holes is two.
Preferably, the clamping device further comprises a tail part connected with the bottom end of the clamping part, the outer diameter of the tail part is smaller than that of the clamping part, and the first axial through hole and the first axial long groove axially penetrate through the tail part.
The utility model provides a frock clamp for external screw thread work piece has adopted the dual clamping of screw-thread fit and elasticity centre gripping, can fasten the centre gripping with external screw thread work piece, adopts screw-thread fit moreover, can prevent to press from both sides the external screw thread of work piece and hinder, can solve the problem of both ends screw thread decentraction among the prior art in the processing of double thread connector well moreover.
Drawings
FIG. 1 is a schematic structural view of an externally threaded workpiece according to the prior art;
fig. 2 is a schematic structural view of a fixture for external thread workpieces provided by the present invention;
fig. 3 is a schematic bottom structure view of the fixture for external thread workpieces provided by the present invention;
fig. 4 is a schematic view of a matching structure of an external thread workpiece and a tool clamp.
Detailed Description
The utility model provides a frock clamp for external screw thread work piece, as shown in fig. 2-3, including head 21 and the clamping part 22 of being connected with head 21 bottom, the external diameter of head 21 is greater than the external diameter of clamping part 22, head 21 and clamping part 22 are equipped with first axial through-hole 23, be located the head 21 and the clamping part 22 upper end first axial through-hole 23 the lateral wall on be equipped with the external screw thread matched with internal thread of external screw thread work piece; the head 21 and the clamping portion 22 are further provided with a first axial long groove 24, the first axial long groove 24 axially penetrates through the head 21 and the clamping portion 22, and radially penetrates through a side wall of the first axial through hole 23, namely, the first axial long groove 24 separates the head and the clamping portion from one side of the first axial through hole to provide elasticity.
With two screw thread connector work piece examples, the utility model discloses a concrete working process as follows:
taking a double-thread connector workpiece with an external thread at one end processed, as shown in fig. 4, matching the external thread with an internal thread on a first axial through hole of a tool clamp, then placing a clamping part of the tool clamp matched with the connector workpiece in a hydraulic chuck (or a common elastic chuck) on a machine tool, exposing the head, then actuating a hydraulic cylinder, fastening and clamping the clamping part by a clamping jaw of the hydraulic chuck, simultaneously elastically contracting a first axial long groove under stress, further clamping the workpiece, and preventing the problem that the thread matching is loose and the workpiece falls off due to the high-speed rotation of a machine tool spindle in the processing process. The head part and the clamping part are proper in length, and at least one part of the clamping part is provided with an internal thread matched with the external thread, so that the clamping force of the hydraulic chuck on the clamping part can be transmitted to a workpiece.
Therefore, the utility model provides a frock clamp for external screw thread work piece has adopted the dual clamping of screw-thread fit and elasticity centre gripping, can fasten the centre gripping with external screw thread work piece, adopts screw-thread fit moreover, can prevent to press from both sides the external screw thread of work piece and hinder.
As one of the preferred embodiments, the outer diameter of the head 21 is larger than the aperture of the clamping hole of the hydraulic chuck matched with the clamping part 22, after the clamping part 22 is matched with the hydraulic chuck, the bottom end face of the head 21 is attached to the end face of the hydraulic chuck, and the top end face of the head is attached to the cylindrical connecting face of the double-thread connector, so that the connection between the head and the hydraulic chuck and the double-thread connector is enhanced. Further preferably, the top end surface of the head portion is provided with a groove 29 matched with the bottom end of the cylindrical connecting surface 12, so as to strengthen the connection with the double-thread connector.
As one of the preferred embodiments, the utility model provides a frock clamp for external screw thread work piece still includes the connecting portion 25 that is located between head 21 and clamping part 22, and the external diameter of connecting portion is less than the clamping part. The connecting part 25 with the outer diameter smaller than the clamping part 22 is arranged, the stress on the end part of the clamping part 22 of the tool clamp is reduced, the whole clamp is stressed, and if the connecting part 25 with the smaller outer diameter is not arranged, the end part of the clamping part 22 is easily stressed to break along with the increase of clamping times.
As one preferred embodiment, the head portion 21 and the clamping portion 22 are further provided with a second axial long groove 26 and a second axial through hole 27, the second axial long groove 26 axially penetrates through the head portion 21 and the clamping portion 22, and the first axial through hole 23 and the second axial through hole 27 are radially communicated. The provision of the second axial long groove 26 and the second axial through hole 27 may enhance the flexibility of the tooling fixture. Further, the number of the second axial long grooves 26 and the second axial through holes 27 is preferably two.
As one of the preferred embodiments, the utility model provides a frock clamp for external screw thread work piece still includes the afterbody 28 of being connected with clamping part 22 bottom, and the external diameter of afterbody is less than clamping part 22, and first axial through-hole 23 and first axial elongated slot 24 axially run through afterbody 28. The tail part 28 has a smaller outer diameter, so that the clamping of the clamping part 22 is not influenced, and the side wall is thinner, so that the elasticity of the tool clamp is enhanced.
In addition, as can be understood by those skilled in the art, the utility model provides a frock clamp not only is applicable to the double thread connector as shown in fig. 1, still is applicable to other external screw thread work pieces that need the centre gripping external screw thread.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. A tool clamp for an external thread workpiece is characterized by comprising a head and a clamping part connected with the bottom end of the head, wherein the outer diameter of the head is larger than that of the clamping part, the head and the clamping part are provided with first axial through holes, and the side wall of the first axial through hole at the upper ends of the head and the clamping part is provided with internal threads matched with the external threads of the external thread workpiece; the head part and the clamping part are also provided with first axial elongated grooves, and the first axial elongated grooves axially penetrate through the head part and the clamping part and radially penetrate through one side wall of the first axial through hole.
2. The tooling clamp for externally threaded workpieces according to claim 1,
the clamping device further comprises a connecting part located between the head part and the clamping part, and the outer diameter of the connecting part is smaller than that of the clamping part.
3. The tooling clamp for externally threaded workpieces according to claim 1,
the head part and the clamping part are also provided with a second axial elongated slot and a second axial through hole, the second axial elongated slot axially penetrates through the head part and the clamping part and is communicated with the first axial through hole and the second axial through hole along the radial direction.
4. A tool holder for externally threaded workpieces according to claim 3,
the number of the second axial long grooves and the second axial through holes is two.
5. The tooling clamp for externally threaded workpieces according to claim 1,
the clamping part is arranged on the base, the clamping part is arranged on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922180877.4U CN211277539U (en) | 2019-12-09 | 2019-12-09 | Frock clamp for external screw thread work piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922180877.4U CN211277539U (en) | 2019-12-09 | 2019-12-09 | Frock clamp for external screw thread work piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211277539U true CN211277539U (en) | 2020-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922180877.4U Active CN211277539U (en) | 2019-12-09 | 2019-12-09 | Frock clamp for external screw thread work piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211277539U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117483828A (en) * | 2023-12-29 | 2024-02-02 | 成都鼎易精密模具有限公司 | Outer circle processing protection device |
-
2019
- 2019-12-09 CN CN201922180877.4U patent/CN211277539U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117483828A (en) * | 2023-12-29 | 2024-02-02 | 成都鼎易精密模具有限公司 | Outer circle processing protection device |
| CN117483828B (en) * | 2023-12-29 | 2024-03-15 | 成都鼎易精密模具有限公司 | Outer circle processing protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 451200 No.33, Chuangye Road, private science and technology entrepreneurship Park, Gongyi City, Zhengzhou City, Henan Province Patentee after: Henan HENGCHUANG Precision Manufacturing Co.,Ltd. Address before: 451200 No.33, Chuangye Road, private science and technology entrepreneurship Park, Gongyi City, Zhengzhou City, Henan Province Patentee before: HENAN STELLAR HYDRAULIC Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 451200 No.33, Chuangye Road, private science and technology entrepreneurship Park, Gongyi City, Zhengzhou City, Henan Province Patentee after: Henan HENGCHUANG Precision Manufacturing Co.,Ltd. Address before: 451200 No.33, Chuangye Road, private science and technology entrepreneurship Park, Gongyi City, Zhengzhou City, Henan Province Patentee before: Henan HENGCHUANG Precision Manufacturing Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |