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Novel combination broach

A new type of tie rod technology, which is applied in the direction of broaching tools, broaching machines, metal processing equipment, etc., can solve problems such as incompleteness, and achieve the effect of improving vertical parts, improving work efficiency, and improving verticality

Active Publication Date: 2015-12-23
ZHEJIANG ZHUJI CONSTR CHAIN MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this solution can improve the production efficiency of the broach, the applicant did not complete all the improvement tests when the application date of the utility model was submitted. Need for improvement

Method used

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  • Novel combination broach
  • Novel combination broach
  • Novel combination broach

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 Shown: The composite broach of the present invention includes a punching nail 1, a tooth 2, a pull rod 3, a broach positioning portion 4 and a broach tail 5, and a diameter of the punching nail is arranged between the punching nail 1 and the tooth 2. 1 A first circular table connecting portion 6 tapering in the direction of the tooth 2, a second circular table connection with a larger diameter from the pull rod 3 to the broach positioning portion 4 is provided between the pull rod 3 and the broach positioning portion 4 Part 7, the pull rod 3 is arranged between the tooth 2 and the second circular table connecting part 7, the broach positioning part 4 is arranged between the second circular table connecting part 7 and the broach tail 5. The tooth 2 includes a diameter larger than the punching hole Punching teeth with an initial diameter smaller than the target punching diameter and trimming teeth with a diameter equal to the punching target diameter. The p...

Embodiment 2

[0043] As a preferred embodiment, figure 1 The compound broach shown has four teeth, that is, the tooth 2 includes a first tooth 21, a second tooth 22, a third tooth 23, and a fourth tooth 24, wherein the first tooth 21 and the second tooth 22 are punching teeth, The third tooth 23 and the fourth tooth 24 are trimming teeth, wherein the diameter of the first tooth is 0.1mm-0.15mm larger than the diameter of the punching nail, and the diameter of the second tooth is 0.1mm larger than the diameter of the first tooth. 0.15mm, the diameter of the punching nail 1 is equal to the initial diameter of the punching hole. In this embodiment, the three-pass broaching of the punching nail 1, the first tooth 21 and the second tooth 22 is used to complete the processing from the initial parameters of the punching to the target parameters, and then the third tooth 23 and the fourth tooth 24 realize the trimming. Further improve the verticality of the punched inner hole cylinder.

[0044] Altho...

Embodiment 3

[0049] Such as figure 2 As shown, the punching teeth and trimming teeth both include a first base surface 211, a second base surface 212, a third base surface 213, and a fourth base surface 214, wherein the distance between the first base surface 211 and the horizontal plane The included angle is A, the included angle between the second base surface 212 and the vertical surface is B, the horizontal plane and the vertical surface are perpendicular to each other, the first base surface 211 and the second base surface 212 are smoothly connected by an arc surface, A groove is formed at the arc surface between the first base surface 211 and the second base surface 212; the second base surface 212 and the third base surface 213 form a tooth tip at the intersection; the width of the third base surface 213 is L , The fourth base surface 214 is inclined downward from a position where the distance between the third base surface 213 and the tooth tip is equal to the width of the third bas...

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Abstract

The invention discloses a novel combination broach. The novel combination broach comprises a punching nail, teeth, a pull rod, a broach positioning portion and a broach tail portion; a first circular table connection portion with the diameter gradually shrinking in the direction from the punching nail to the teeth is arranged between the punching nail and the teeth, a second circular table connection portion is arranged between the pull rod and the broach positioning portion, and the broach positioning portion is arranged between the second circular table connection portion and the broach tail portion; the teeth comprise hole punching teeth with the diameter larger than the punched hole initial diameter and smaller than the punched hole target diameter and hole repair teeth with the diameter equal to the punched hole target diameter, the hole punching teeth are closer to the punching nail than the hole repair teeth, and the diameter of the punching nail is equal to the punched hole initial diameter. Compared with the prior art, by means of the novel combination broach, the time consumed in assembling of a mold and testing of the mold and a tool in the second working effect is reduced; meanwhile, the technical problem in the prior art, accurate positioning in the second hole repair technology is not easy, and an euphotic zone, namely, the perpendicular portion of the inner wall of the aperture of a punched hole, is improved.

Description

Technical field [0001] The invention relates to a new type of composite broach, belonging to the technical field of bending plate chain processing. Background technique [0002] The chain plates of non-standard chains, large-size 40A, standard roller chains above B and various heavy-duty bent plate chains need to be punched during the production process, so that the inner and outer chain plates are processed to form the required aperture. The existing process of processing the chain plate is to first punch the nails, and punch the chain plates through the punching equipment. After the punching nails punch the chain plates, the upper and lower ends of the inner diameter of the hole are definitely not vertical. The reason is According to the traditional method, the inner hole parameters of the die must be enlarged by about 0.3~0.5mm on the basis of the nail parameters, depending on the thickness of the chain plate. If the chain plate exceeds 15 mm, the inner diameter of the die sho...

Claims

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Application Information

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IPC IPC(8): B23D43/00
Inventor 宣国建
Owner ZHEJIANG ZHUJI CONSTR CHAIN MFG
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