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Screwhead punching pin locking method and screwhead punching die

A technology for screwdrivers and screw heads, which is applied in the fields of locking screwdriver groove punching heads of screw heads and punching molds, can solve the problems of waste and large waste, achieve long service life, convenient disassembly, and save production preparation time Effect

Inactive Publication Date: 2007-08-22
陈显国
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mold used in this way is disposable. Once the punching head of the screwdriver groove is worn out, the entire mold will be scrapped, which is a big waste. Especially the material of the mold is expensive high-speed steel or alloy steel. The degree of waste can be imagined

Method used

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  • Screwhead punching pin locking method and screwhead punching die
  • Screwhead punching pin locking method and screwhead punching die
  • Screwhead punching pin locking method and screwhead punching die

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Fig. 12 is a schematic diagram of the principle of this embodiment. This embodiment includes: a screwdriver groove punching head 1, the screwdriver groove punching head is a cylindrical body with the same size up and down. A cylindrical punch cover 5 with an inner conical surface, a frustum-shaped punch seat 3 with a hole in the center, a cushion block 4, and a cover seat 6 threaded with the punch cover. The conical angle of the outer conical surface of the frustum-shaped punch seat is equal to the inner conical angle of the punch sleeve, and the hole in the middle can be circular or other shapes, usually a shape that conforms to the cross-section of the punching head. For example, if the cross-sectional shape of the punching head is a hexagonal prism, the shape of the center hole of the punch sleeve is also a hexagonal prism, as shown in Figure 27; if the cross-sectional shape of the punching head is a cross, the shape of the center hole of the punch sleeve is also a c...

Embodiment 2

[0032] Fig. 12 is a schematic diagram of the assembly of this embodiment. The screwdriver groove punching head 1 is a rod-shaped cylinder with the same size up and down except for the punching cone at the top, as shown in Figs. 14-17. That is to say, what is the shape of the screwdriver groove to be punched, and what is the shape of the rod-shaped column of the punching head of the screwdriver groove. For example, if the screwdriver groove is cross-shaped, then the rod-shaped cylinder of the screwdriver groove punching head is cross-shaped, as shown in Figures 16-17; if the screwdriver groove is hexagonal, the rod-shaped cylinder of the screwdriver groove punching head The cylinder is exactly hexagonal, as shown in Figures 14-15, and so on. The purpose of this design is to reuse the rod-shaped cylinder of the screwdriver groove punching head. Once the front end is worn, the worn part can be worn away by grinding. When installing, as long as some small pads are placed at the r...

Embodiment 3

[0040] Other aspects of this embodiment are the same as that of Embodiment 1, except that the locking block 202 of the locking device used in this embodiment is cylindrical, and the corresponding locking hole 201 on the punch seat is also circular. hole, as shown in Figure 22-25. The two ends of the cylinder are not parallel and have an included angle α, as shown in Figure 25. The advantage of this embodiment is that the processing is more convenient and the manufacturability is better. The locking block of the locking device can also have other forms. Such as square or rhombus etc.

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Abstract

The present invention discloses screwhead punching pin locking method and screwhead punching die, and relates to screwhead machining technology. The screwhead punching pin includes spacer block, sleeve seat, thread slot punching head, punching head jacket, punching head seat and punching pin locking device. The design with separable thread slot punching head and punching head seat makes it possible to reuse the punching head seat repeatedly and to repair the worn thread slot punching head for reuse, and this results in saving in expensive material, saving in setup time and raising in production efficiency.

Description

technical field [0001] The invention relates to a screwdriver groove punching head locking method and punching die for screw heads, which is a die used for metal stamping in mechanical processing, and a die specially used for punching screwdriver grooves on screw heads. Background technique [0002] The manufacture of screws itself is very mature and is a process of super-mass production. The molds used in it are also very mature. The mold for punching the screw head and the screwdriver groove on the screw head usually uses a single piece of material, as shown in Figure 1. The mold is cylindrical, the top end is a screwdriver groove punching head with the same shape as the screwdriver groove, and the rear end is a cylindrical shape with a diameter larger than the screw head. The connection between the screwdriver groove punching head and the cylindrical shape is a concave surface that matches the shape of the screw head. This concave cylinder can be said to be the mold of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23G9/00F16B1/00B23B31/107
Inventor 陈显国
Owner 陈显国
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