Inner hole bottom thread machining clamp

By designing a fixture for machining the bottom thread of an inner hole, and utilizing a combination of a workpiece holder and a fixture assembly, the problem of long cylindrical workpieces tipping over during machining was solved, achieving stable workpiece fixation and improving machining safety and efficiency.

CN224011392UActive Publication Date: 2026-03-20SHANGHAI JIUFENG AUTOMOTIVE PARTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-12
Publication Date
2026-03-20

AI Technical Summary

Technical Problem

Long cylindrical workpieces are prone to tipping over during the threading process at the bottom of the inner hole, which affects production progress and poses safety risks, and there is a lack of special fixtures to fix them.

Method used

A fixture for machining the bottom thread of an internal hole was designed, including a workpiece holder and a fixture assembly. The workpiece is stably fixed by the combination of the fixing pin and the fixture assembly. The fixture assembly consists of a support column, a screw and a pressure block. Fasteners are used to press the workpiece holder onto the surface of the worktable.

Benefits of technology

This technology enables stable fixation of long cylindrical workpieces, improving the safety and production efficiency of the processing.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224011392U_ABST
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Abstract

The utility model discloses an inner hole bottom thread machining clamp which comprises a workpiece fixing frame and a clamp assembly. The workpiece fixing frame is of a hollow cylindrical structure, a to-be-machined workpiece is inserted into the workpiece fixing frame, a plurality of sets of fixing holes are formed in the side wall of a cylinder of the workpiece fixing frame, and the to-be-machined workpiece is fixed by inserting the fixing pins into the fixing holes. The clamp assembly comprises supporting stand columns, a threaded rod and a pressing block, the two supporting stand columns are arranged on the left side and the right side of the workpiece fixing frame respectively and are as high as the workpiece fixing frame, the threaded rod is arranged between the workpiece fixing frame and the supporting stand columns, and the pressing block penetrates through the threaded rod to be connected to the supporting stand columns and the top face of the workpiece fixing frame in a bridging mode and is fastened through a fastener. And the workpiece fixing frame is pressed and fixed on the surface of the workbench. According to the utility model, the long cylindrical workpiece can be effectively fixed.
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Description

TECHNICAL FIELD

[0001] The utility model relates to a hole bottom thread processing clamp for machining field. BACKGROUND

[0002] When the long barrel type workpiece is processed, the barrel is a blind hole barrel, and the barrel is long, so the workpiece opening is placed on the workbench, and then the work is carried out from the top. Because the workpiece is high, it is easy to fall on the workbench during processing, which not only affects the production progress, but also may cause production accidents. There is no special clamp for fixing long barrel type workpieces. SUMMARY

[0003] The utility model discloses a hole bottom thread processing clamp, which can realize effective fixing of long barrel type workpieces.

[0004] One technical scheme to achieve the above-mentioned purpose is: a hole bottom thread processing clamp, comprising a workpiece fixing frame and a clamp assembly.

[0005] The workpiece fixing frame is a hollow cylindrical structure, the workpiece to be processed is inserted into the workpiece fixing frame, and a plurality of groups of fixing holes are formed in the side wall of the barrel of the workpiece fixing frame. The workpiece to be processed is fixed by inserting a fixing pin into the fixing hole.

[0006] The clamp assembly comprises a support column, a screw rod and a pressing block. Two support columns are arranged on the left and right sides of the workpiece fixing frame and are the same height as the workpiece fixing frame. The screw rod is arranged between the workpiece fixing frame and the support column. The pressing block crosses the screw rod and is connected to the top surface of the support column and the workpiece fixing frame. The workpiece fixing frame is tightly fixed to the surface of the workbench by fastening.

[0007] Further, the fixing holes are arranged on the side wall of the workpiece fixing frame in four groups at equal intervals in the longitudinal direction.

[0008] Further, a group of fixing holes is arranged on the side wall of the workpiece fixing frame at intervals of 90°.

[0009] Further, at least two fixing pins are inserted into each group of fixing holes.

[0010] Further, the top surface of the support column and the workpiece fixing frame is provided with a clamping groove matched with the fixing block.

[0011] The hole bottom thread processing clamp of the utility model can fix the long barrel type workpiece when it is inverted, ensure the stability and reliability of the workpiece during processing, and improve the safety factor and production efficiency of the processing process. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic view of the inner hole bottom thread machining clamp. DETAILED DESCRIPTION

[0013] In order to better understand the technical scheme of the utility model, the following will be explained in detail through specific examples:

[0014] Please refer to Figure 1 The utility model discloses a kind of inner hole bottom thread machining clamps, including workpiece fixing frame 1 and clamp assembly.

[0015] Workpiece fixing frame 1 is hollow cylindrical structure, and the workpiece 2 to be processed is inserted in workpiece fixing frame 1.In the barrel side wall of workpiece fixing frame 1, a plurality of sets of fixed holes 3 are provided, and the workpiece to be processed is fixed by inserting the fixed pin 4 into the fixed hole.

[0016] As preferred, the fixed hole 3 is a group of 4, and is arranged on the side wall of the workpiece fixing frame in longitudinal equal intervals.In the side wall of workpiece fixing frame 1, a group of fixed holes is provided every 90°, and at least two fixed pins 4 are inserted into each group of fixed holes 3.The above structure makes the workpiece 2 to be processed inserted into the workpiece fixing frame 1 fixed by the fixed pin in the range of 360°.

[0017] The clamp assembly includes support column 5, screw 6 and pressing block 7.Two support columns 5 are respectively arranged on the left and right sides of workpiece fixing frame 1, and are the same height as workpiece fixing frame 1.Screw 6 is arranged between workpiece fixing frame 1 and support column 5, and pressing block 7 crosses screw 6 and is connected to the top surface of support column 5 and workpiece fixing frame 1, and is fastened by fastener to press and fix the workpiece fixing frame on the surface of workbench.As preferred, the top surface of support column 5 and workpiece fixing frame 1 is provided with a clamping groove matched with the fixed block.

[0018] When using the machining clamp of the utility model, first, the workpiece to be processed is vertically inserted into the workpiece fixing frame, and adjusted to the appropriate height for processing, and then the fixed pin is inserted into the fixed hole in sequence to fix the position of the workpiece to be processed.After that, the clamp assembly is installed, and the workpiece fixing frame is fixed to prevent displacement or shaking of the workpiece fixing frame during processing.

[0019] Those skilled in the art in this technical field should realize that the above examples are only used to illustrate the utility model, and are not used as a limitation on the utility model, and as long as the changes and modifications of the above described examples are within the scope of the utility model, they will fall within the scope of the claims of the utility model.

Claims

1. A fixture for machining the bottom thread of an internal hole, characterized in that, Includes workpiece holders and fixture assemblies; The workpiece holder is a hollow cylindrical structure. The workpiece to be processed is inserted into the workpiece holder. Several sets of fixing holes are opened on the side wall of the cylindrical body of the workpiece holder. The workpiece to be processed is fixed by fixing pins inserted into the fixing holes. The fixture assembly includes support columns, screws, and pressure blocks. Two support columns are respectively set on the left and right sides of the workpiece holder, at the same height as the workpiece holder. The screw is set between the workpiece holder and the support columns. The pressure block passes through the screw and spans the top surfaces of the support columns and the workpiece holder. It is fastened by fasteners to press and fix the workpiece holder to the worktable surface.

2. The internal hole bottom thread machining fixture according to claim 1, characterized in that, The fixing holes are arranged in a group of four, with equal spacing in the longitudinal direction on the side wall of the workpiece fixing frame.

3. A fixture for machining the bottom thread of an internal hole according to claim 2, characterized in that, A set of fixing holes is provided at 90° intervals on the side wall of the workpiece holder.

4. A fixture for machining the bottom thread of an internal hole according to claim 2, characterized in that, At least two fixing pins are inserted into each set of fixing holes.

5. A fixture for machining the bottom thread of an internal hole according to claim 1, characterized in that, The top surface of the support column and the workpiece fixing frame is provided with a snap-fit ​​groove that matches the fixing block.