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Adapter for hole saw and power tool with same

An adapter and hole saw technology, which is used in manufacturing tools, drilling tool accessories, metal processing equipment, etc., can solve the problems of insufficient connection method and limited spring force of the compression spring.

Active Publication Date: 2020-06-05
BOSCH POWER TOOLS CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limited elastic force provided by the compression spring, this connection method is still not firm enough

Method used

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  • Adapter for hole saw and power tool with same
  • Adapter for hole saw and power tool with same
  • Adapter for hole saw and power tool with same

Examples

Experimental program
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Embodiment Construction

[0029] see figure 1 and image 3 , which shows an embodiment of the adapter for a hole saw of the present invention. Specifically, the adapter sequentially includes: a mandrel 200 , a hollow sleeve 300 and a sleeve 100 along its installation sequence.

[0030]Wherein, the mandrel 200 includes roughly divided into two sections according to its own structure: the first section 210 and the second section 220; and it is provided with a drill bit extending from the second section 220 to the first section 210 along the central axis Aperture 230 (not visible in current view due to viewing angle, shown in section Figure 4 and Figure 7 are visible in the middle), for the drill bit 700 to be inserted thereinto. For the first section 210 of the mandrel 200 , there is provided a drill positioning hole 211 communicating with the drill hole 230 in the radial direction. Such design makes it possible to position the drill bit 700 in the drill bit hole 230 through an additional position...

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Abstract

The invention discloses an adapter for a hole saw, which includes: a sleeve, including an inner hole penetrating the sleeve in the axial direction, including a coupling section and a release section; a spindle, including a first section, which is inserted into the sleeve. It is provided in the inner hole of the sleeve and has a shaft diameter smaller than the inner hole; the side of the mandrel away from the first section is provided with a threaded portion for the hole saw to screw; the hollow sleeve has a diameter that matches the first section the inner contour of The outer profile matches the coupling section, and the hollow bushing is assembled to the mandrel through the cooperation of the inner profile and the first section; wherein the adapter has an axial coupling position and a release position; in the coupling position, the outer profile matches The coupling section allows the mandrel to drive the sleeve to rotate; in the release position, the outer contour breaks away from the coupling section and enters the release section, allowing the mandrel to rotate independently of the sleeve. The adapter for a hole saw of the present invention is easy to assemble and disassemble, easy to adjust during use, and has a very stable connection state with the hole saw during use.

Description

technical field [0001] The present invention relates to the field of power tool components, in particular to adapters for hole saws. Background technique [0002] In modern industry or engineering, hole saws are often used to process circular holes in various materials such as metals. The hole saw needs to be powered during the sawing process, so the hole saw is generally installed on electric tools such as hand drills, impact drills, and radial drills for use together. In order to adapt to different hole saws and different electric tools, an adapter for providing connection and transmitting torque is usually arranged therebetween. [0003] Several different types of adapters already exist in the prior art. For example, a relatively common adapter includes an arbor and a sleeve respectively used to connect the driving part and the hole saw, and the two are connected to each other and cannot be rotated relative to each other. With this type of adapter, when the arbor is al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B51/04
CPCB23B51/0473
Inventor 丁东辉
Owner BOSCH POWER TOOLS CHINA
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