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Counter bore once drilling device and assembly method

A countersunk and countersunk head technology, which is applied in the direction of drilling/drilling equipment, drill repairing, drilling tool accessories, etc., can solve the problems of machining accuracy, low efficiency, increased production cost, and poor cutting chip removal, etc., to achieve production High efficiency, smooth chip removal and wide range of effects

Inactive Publication Date: 2018-02-09
CHINA FIRST METALLURGICAL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems of this method are: 1. Drilling in two processes requires secondary clamping, low machining accuracy and efficiency; Coolant side groove, large drilling tool consumption

Method used

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  • Counter bore once drilling device and assembly method
  • Counter bore once drilling device and assembly method
  • Counter bore once drilling device and assembly method

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:

[0026] As shown in the accompanying drawing, the one-time drilling and forming device for countersunk holes includes countersunk drill bushing 1, inner slotted locking screw 2, side groove straight shank drill bit 3, and side groove straight shank drill bit 3 is connected to countersink drill bushing 1 Inside, the clamping end of the side groove straight shank drill bit 3 is a cylindrical structure surrounded by two mutually perpendicular planes 3.1 and an arc surface 3.2. 1.1 The radius of curvature is the same as that of the curved surface 3.2. The connecting hole 1.1 is provided with a radial locking hole 1.2 on the side wall of the bottom of the hole that matches the two vertical planes 3.1 of the side groove straight shank drill bit. The locking hole 1.2 is used to connect the side groove straight shank drill bit 3 to the countersunk d...

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Abstract

The invention provides a countersunk hole one-time drilling forming device and assembly method, which adopts the combination of the countersunk drill bushing and the side groove straight shank drill bit, one-time drilling forming, and solves the countersink drilling and forming process safely, quickly and easily . According to the type of countersunk hole in the engineering plate, the corresponding countersunk drill sleeve and side groove straight shank drill are selected to match the standard part specifications of countersunk head bolts. By adopting the method, the processing procedure can be reduced, the processing precision can be improved, the loss of the drill bit can be reduced, the construction cost can be saved, the processing efficiency can be greatly improved, the method is safe and reliable, and it is easy to popularize and use in production. In addition, diversion holes and diversion grooves are respectively opened on the countersunk drill bushing and side groove straight shank drill bit, without external cooling device, the cooling effect is remarkable, and the construction cost is greatly reduced.

Description

technical field [0001] The invention belongs to the field of counterbore processing, and in particular relates to a counterbore one-time drilling forming device and an assembly method. Background technique [0002] In the construction and production of steel structure workshops, equipment manufacturing and installation, bridges, gymnasiums and other building construction projects, due to the force requirements of the structure, the force of the components or the link between the components, in order to meet the design requirements, it is necessary to use it on the component or part board. The form of countersunk head bolt connection ensures that the design and construction requirements are met. In the early production and processing of components or parts, a large number of countersink holes will be processed. In the past, the countersink hole processing method used two processes: including drilling and countersinking. It is necessary to drill the main through hole with a dr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B51/10B23B51/08B25B27/00
CPCB23B51/108B23B51/08B25B27/00
Inventor 黄华侦许毅王晓高刚李少祥
Owner CHINA FIRST METALLURGICAL GROUP
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