CN215467539U - Automatic centering punching press frock - Google Patents

Automatic centering punching press frock Download PDF

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Publication number
CN215467539U
CN215467539U CN202121460995.1U CN202121460995U CN215467539U CN 215467539 U CN215467539 U CN 215467539U CN 202121460995 U CN202121460995 U CN 202121460995U CN 215467539 U CN215467539 U CN 215467539U
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CN
China
Prior art keywords
workpiece
punching
sleeve
centering
needle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202121460995.1U
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Chinese (zh)
Inventor
蔡斌
李宗勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Yuzuan Precision Components Co ltd
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Zhejiang Yuzuan Precision Components Co ltd
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Publication date
Application filed by Zhejiang Yuzuan Precision Components Co ltd filed Critical Zhejiang Yuzuan Precision Components Co ltd
Priority to CN202121460995.1U priority Critical patent/CN215467539U/en
Application granted granted Critical
Publication of CN215467539U publication Critical patent/CN215467539U/en
Active legal-status Critical Current
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Abstract

An automatic centering stamping tool comprises a base, a guide sleeve arranged on the base and a stamping needle arranged in the guide sleeve. The base includes a product mounting hole and a spacer disposed within the mounting hole. The guide sleeve comprises a top plate and a workpiece sleeve connected with the middle part of one side of the top plate, and a punching needle hole is formed in the middle of the top plate. The top end of the punching needle is provided with a conical punching needle head used for punching the inner diameter of a workpiece into a frustum-shaped step surface. The automatic centering stamping tool provided by the utility model has an automatic centering function, and can help a workpiece to accurately find the center in the stamping process, thereby completing the stamping work and improving the yield of stamped products.

Description

Automatic centering punching press frock
Technical Field
The utility model belongs to the technical field of machining, and particularly relates to an automatic centering stamping tool.
Background
In the technical field of machining, a frustum-shaped step surface is sometimes required to be machined in an inner hole of a workpiece, the existing machining tool is very troublesome in machining the step surface, and the central axis of the tool and the central axis of the workpiece are difficult to be coincident, so that the quality of a product is poor.
Disclosure of Invention
In view of the above, the present invention provides a self-centering stamping tool to solve the above problems.
An automatic centering stamping tool comprises a base, a guide sleeve arranged on the base and a stamping needle movably positioned in the guide sleeve; the middle part of the top surface of the base is provided with a mounting hole, and the bottom of a workpiece to be processed is positioned in the mounting hole; the guide sleeve comprises a top plate and a workpiece sleeve connected with the middle part of one side of the top plate; the top of the workpiece is positioned in the sleeve; a punching pin hole is formed in the position, corresponding to the central shaft of the workpiece sleeve, of the top plate; the punch pin penetrates through the punch pin hole and is positioned in the workpiece sleeve and the inner hole of the workpiece.
Furthermore, the shapes of the mounting hole, the workpiece and the workpiece sleeve are all cylindrical.
Further, a circular gasket is placed in the mounting hole.
Further, a chamfer is arranged on the inner side of one end, away from the top plate, of the workpiece sleeve.
Furthermore, the punching needle comprises a cylindrical punching needle handle, a punching needle head arranged at one end of the punching needle handle and a connecting part arranged at the other end of the punching needle handle, and the punching needle head is conical.
Furthermore, the connecting part is cylindrical, and the diameter of the connecting part is larger than that of the punch needle handle.
Furthermore, a first gap is formed between the excircle of the punching needle handle and the inner side wall of the punching needle hole, and the width of the first gap is 0.005-0.008 mm.
Compared with the prior art, the automatic centering stamping tool provided by the utility model fixes the workpiece through the mounting hole arranged on the base and the workpiece sleeve on the guide sleeve. The round gasket performs buffer protection on the workpiece. The guide sleeve is matched with the punching needle to ensure that the punching needle can be vertical to the top surface of the base. Under the action of an external press machine, the top plate and the punch needle handle on the guide sleeve can brake and deflect to centralize the workpiece, and the automatic centering function of the tool is completed. The automatic centering punching press frock has improved the yields of punching press work piece, for enterprise's production has practiced thrift the cost.
Drawings
Fig. 1 is a schematic structural view of the self-centering stamping tool provided by the utility model.
Fig. 2 is a schematic cross-sectional view illustrating a workpiece being stamped by using the self-centering stamping tool provided by the present invention.
Fig. 3 is a schematic structural diagram of the base in fig. 1.
Fig. 4 is a schematic structural view of the guide sleeve in fig. 1.
Fig. 5 is a schematic structural view of the punch pin in fig. 1.
Detailed Description
Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the utility model is not intended to limit the scope of the utility model.
As shown in fig. 1 and fig. 2, the self-centering stamping tool provided by the utility model comprises a base 10, a guide sleeve 20 arranged on the base 10, and a stamping pin 30 movably located in the guide sleeve 20. It is contemplated that the self-centering stamping tool may further include other functional modules, such as a press acting on the stamping pin 30, which are well known to those skilled in the art and will not be described in detail herein.
Fig. 3 is a schematic structural diagram of a base according to the present invention. The base 10 is a structural component with a bearing function, a cylindrical mounting hole 12 is formed in the middle of the top surface of the base 10, and the bottom of the workpiece 40 is located in the positioning hole 12. The base 10 is further provided with a circular gasket 11 in the positioning hole 12, the bottom surface of the workpiece 40 is located on the circular gasket 11, and the circular gasket 11 mainly serves to buffer and protect the workpiece 40.
Fig. 4 is a schematic structural view of the guide sleeve according to the present invention. The guide sleeve 20 is located on the top surface of the base 10. The guide sleeve 20 comprises a top plate 23 and a workpiece sleeve 22 connected with the middle part of one side of the top plate, and the workpiece sleeve 22 is cylindrical. The top of the workpiece 40 is located in the workpiece sleeve 22. A punching hole 21 is formed in the position, corresponding to the central axis of the workpiece sleeve 22, of the top plate 23, and a chamfer is arranged on the inner side of one end, away from the top plate 23, of the workpiece sleeve 22, so that the workpiece 40 can conveniently enter the workpiece sleeve 22.
Fig. 5 is a schematic structural view of the punch pin according to the present invention. The punch needle 30 comprises a cylindrical punch needle handle 31, a punch needle punch 32 arranged at one end of the punch needle handle 31, and a connecting part arranged at the other end of the punch needle handle 31. The connecting part is in the shape of a cylinder, and the diameter of the connecting part is larger than that of the punch needle handle 31. The punch needle head 32 is conical in shape. The punch pin 30 passes through the punch hole 21 and is located in the workpiece sleeve 22 and the workpiece 40.
The purpose of the self-centering stamping tool to achieve self-centering will be described in detail below. First, a workpiece 40 is installed in the installation hole 12, wherein the workpiece 40 has an inner hole along the axial direction, and a step 41 is protrudingly arranged in the inner hole. The punch pin 30 is located in the inner bore of the workpiece 40.
The outer press is started and the press is pressed from above downwards, first contacting the punch pin 30. The punch needle head 32 abuts the step 41. Since the clearance between the inner wall of the workpiece sleeve 22 and the outer wall of the workpiece 40 is larger than the clearance between the punch pin shank 31 and the punch pin hole 21, the workpiece 40 may not be concentric with the workpiece sleeve 22 before machining; if the workpiece 40 is not concentric with the workpiece sleeve 22, under the action of the punching force, the top plate 23 of the guide sleeve 20 and the punch needle handle 31 brake and swing, and the workpiece 40 is centered, so that the automatic centering function of the tool is completed. The press machine continues to press the punching needle 30, and the conical punching needle head 32 presses and processes a frustum-shaped step surface on the inner circular step 41 of the workpiece 40, so that the pressing action is completed.
Compared with the prior art, the self-centering punching tool provided by the utility model fixes the workpiece 40 through the mounting hole 12 arranged on the base 10 and the workpiece sleeve 22 arranged on the guide sleeve 20. The circular pad 11 provides cushioning protection to the workpiece 40. The guide sleeve 20 is matched with the punch pin 30 to ensure that the punch pin 30 can be perpendicular to the top surface of the base 10. Under the action of an external press machine, the top plate 23 of the guide sleeve 20 and the punch needle handle 31 can brake and deflect to centralize the workpiece 40, and the automatic centering function of the tool is completed. The automatic centering punching press frock has improved the yields of punching press work piece, for enterprise's production has practiced thrift the cost.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and any modifications, equivalents or improvements that are within the spirit of the present invention are intended to be covered by the following claims.

Claims (7)

1. The utility model provides an automatic centering punching press frock which characterized in that: the automatic centering stamping tool comprises a base, a guide sleeve arranged on the base and a stamping needle movably positioned in the guide sleeve; the middle part of the top surface of the base is provided with a mounting hole, and the bottom of a workpiece to be processed is positioned in the mounting hole; the guide sleeve comprises a top plate and a workpiece sleeve connected with the middle part of one side of the top plate; the top of the workpiece is positioned in the sleeve; a punching pin hole is formed in the position, corresponding to the central shaft of the workpiece sleeve, of the top plate; the punch pin penetrates through the punch pin hole and is positioned in the workpiece sleeve and the workpiece.
2. The self-centering stamping tool according to claim 1, wherein: the mounting hole, the workpiece and the workpiece sleeve are all cylindrical.
3. The self-centering stamping tool according to claim 2, wherein: a circular gasket is placed in the mounting hole.
4. The self-centering stamping tool according to claim 2, wherein: and a chamfer is arranged on the inner side of one end, away from the top plate, of the workpiece sleeve.
5. The self-centering stamping tool according to claim 1, wherein: the punching needle comprises a cylindrical punching needle handle, a punching needle head arranged at one end of the punching needle handle and a connecting part arranged at the other end of the punching needle handle, and the punching needle head is conical.
6. The self-centering stamping tool according to claim 5, wherein: the connecting part is cylindrical, and the diameter of the connecting part is larger than that of the punch needle handle.
7. The self-centering stamping tool according to claim 5, wherein: a first gap is formed between the excircle of the needle punching handle and the inner side wall of the needle punching hole, and the width of the first gap is 0.005-0.008 mm.
CN202121460995.1U 2021-06-29 2021-06-29 Automatic centering punching press frock Active CN215467539U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121460995.1U CN215467539U (en) 2021-06-29 2021-06-29 Automatic centering punching press frock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121460995.1U CN215467539U (en) 2021-06-29 2021-06-29 Automatic centering punching press frock

Publications (1)

Publication Number Publication Date
CN215467539U true CN215467539U (en) 2022-01-11

Family

ID=79723161

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121460995.1U Active CN215467539U (en) 2021-06-29 2021-06-29 Automatic centering punching press frock

Country Status (1)

Country Link
CN (1) CN215467539U (en)

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