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a step drill

A technology of stepped drill bits and cutting parts, applied in drill repairing, drilling tool accessories, drilling/drilling equipment, etc., can solve problems such as waste of resources, achieve rapid maintenance and replacement, easy and convenient locking and releasing process, and simple structure Effect

Active Publication Date: 2021-06-18
台州市英络克工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the first cutting part and the second cutting part are integrally arranged, when any position of the first cutting part and the second cutting part is damaged, the entire drill bit needs to be replaced, which causes a waste of resources and needs to be improved

Method used

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Embodiment Construction

[0035] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0036] Such as figure 1 , figure 2 As shown, a step drill bit includes a clamping part 1, and one end of the clamping part 1 is provided with a first cutting part 2 and a second cutting part 3 in sequence, and the diameter of the first cutting part 2 is larger than that of the second cutting part 3 diameter.

[0037] Such as figure 1 , figure 2 As shown, a pair of cooling flow passages 4 disposed opposite to each other penetrate through the clamping portion 1 , the first cutting portion 2 and the second cutting portion 3 , and the pair of cooling flow passages 4 are arranged in a double helix shape.

[0038]When the above-mentioned drill bit is used, since the diameter of the first cutting part 2 is greater than that of the second cutting part 3, the workpiece can be processed by using the first cutting part 2 and the second cutting part 3, so that a st...

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Abstract

The invention discloses a stepped drill bit, which relates to the field of drill bits. It includes a clamping part, one end of the clamping part is provided with a first cutting part and a second cutting part in sequence, and the diameter of the first cutting part is larger than that of the second cutting part. Diameter, the clamping part, the first cutting part and the second cutting part are arranged in a split shape; the end surface of the second cutting part close to the first cutting part is provided with a plurality of installation rods evenly distributed along its circumferential direction, the first The cutting part and the clamping part are provided with a mounting hole through which the mounting rod passes, and an end of the clamping part away from the first cutting part is provided with a locking mechanism for fixing the mounting rod. The present invention has the following advantages and effects: by setting a modular step drill bit, each part of the step drill bit can be disassembled and replaced arbitrarily, thereby realizing independent maintenance and replacement of damaged parts and reducing waste of resources.

Description

technical field [0001] The invention relates to the field of drill bits, in particular to a stepped drill bit. Background technique [0002] A drill is a tool used to drill through holes or blind holes in solid materials and to ream existing holes. During the production and processing of some workpieces, it is usually necessary to use a step drill to process the surface of the workpiece to form the required step hole for the workpiece. [0003] Chinese patent CN202845869U discloses a cemented carbide step drill bit, which includes a clamping part for clamping. The left end of the clamping part is connected with a cutting part. The cutting part includes a first cutting part and a second cutting part. The second cutting part The part is connected with the clamping part, and the diameter of the first cutting part is smaller than the diameter of the second cutting part. [0004] When the above-mentioned stepped drill is used, the stepped hole is machined using the first cuttin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B51/00B23B51/06
CPCB23B51/00B23B51/06
Inventor 陈立新
Owner 台州市英络克工具有限公司
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