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Threaded bolt with taper and its processing tooth plate

A thread and tooth plate technology, applied in the field of automotive fasteners, can solve problems such as the problem of sliding teeth, and achieve the effect of solving the problem of sliding teeth

Active Publication Date: 2016-08-17
宁波敏达汽车科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of sliding teeth caused in the assembly process, and propose a threaded bolt with a taper and its processed tooth plate

Method used

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  • Threaded bolt with taper and its processing tooth plate
  • Threaded bolt with taper and its processing tooth plate
  • Threaded bolt with taper and its processing tooth plate

Examples

Experimental program
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Embodiment Construction

[0011] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0012] Such as figure 1 with 3 As shown, the threaded bolt with taper includes an integrally formed bolt head and bolt shank; the cylindrical surface of the bolt shank includes a matching cylindrical surface 6, a guiding cone surface 7 and a guiding cylindrical surface 8 from the head to the tail in sequence; the matching cylindrical surface is processed with Cooperating thread 1; guide thread 2 is processed on the guide cone surface; the pitch of the cooperating thread is equal to that of the guiding thread, and the lead angle of the guiding thread is 2 times larger than that of the mating thread.

[0013] Such as figure 2 As shown, the tooth plate for processing threaded bolts with taper includes dynamic and static thread rolling plates; the inner sides of the dynamic and static thread rolling plates are processed with a plurality of cooperating ...

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Abstract

The invention discloses a tapered thread bolt and a processing tooth plate thereof. When a common bolt is not aligned with a nut screw tooth to be tightened, the common bolt is easily slipped, and the bolt is broken in severe cases. The bolt rod cylinder surface of the tapered thread bolt comprises a matching cylindrical surface, a guiding conical surface and a guiding cylindrical surface, the matching cylindrical surface is provided with a mating thread, and the guiding conical surface is provided with a guiding thread. The processing tooth plate of the tapered thread bolt comprises a movable thread rolling plate and a static thread rolling plate, wherein a plurality of mating thread rolling raised lines are arranged on the inner sides of the movable thread rolling plate and the static thread rolling plate side by side; 2-3 guiding thread rolling raised lines are arranged at the bottom of the bottom mating thread rolling raised line side by side; a guiding raised line is arranged at the bottom of the bottom guiding thread rolling raised line. The screw tooth of the bolt is extruded by the tooth plate to form a tapered thread and plays a guide role in the butting of the bolt and a nut.

Description

technical field [0001] The invention belongs to the technical field of fasteners for vehicles, and relates to bolts for vehicles, in particular to a threaded bolt with a taper and a processed tooth plate thereof. Background technique [0002] Ordinary structural bolts, in the process of aligning with the nuts, if they are not aligned with the nut threads, they are easy to slip when tightening directly with a torque gun. In some serious cases, the bolts will be broken and affect the car Assembly efficiency of the production line. Contents of the invention [0003] The object of the present invention is to propose a threaded bolt with a taper and its processed tooth plate in order to solve the problem of tooth slippage caused in the assembly process. [0004] The tapered threaded bolt of the present invention includes an integrally formed bolt head and a bolt shank; the cylindrical surface of the bolt shank sequentially includes a matching cylindrical surface, a guiding con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B35/00B23G5/00
Inventor 林玮信
Owner 宁波敏达汽车科技股份有限公司
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