Conveniently replaced hole opener
A technology of hole opener and positioning hole, which is applied in the directions of transportation and packaging, drilling/drilling equipment, boring machine/drilling machine parts, etc., which can solve the problems of inconvenient replacement, self-tightening effect, locking, etc. convenient effect
Inactive Publication Date: 2018-11-06
俞安郭
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Problems solved by technology
[0002] Existing hole opener structures such as figure 1 As shown, it is mainly composed of the handle 1' and the opener body 2', and the two are directly connected by the thread 11'. Although this structure can realize the effective connection of the two, it has a big problem. That is to say, after work, the hole saw body 2' will produce a self-tightening effect due to the influence of the hole opening reaction force. As a result, the hole saw body 2' and the handle 1' will be completely locked, and it cannot be disassembled by hand. Use special tools such as wrenches for disassembly, which makes it very inconvenient to use different sizes or types of hole saws
Method used
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Embodiment Construction
[0016] Such as Figure 2-5 As shown, a hole saw that is easy to replace includes a handle 1 and a hole saw body 2 .
[0017] The whole handle 1 is divided into a central drill part 11 , an upper connecting thread part 12 , a circumferential rotation limiting part 13 , a round handle body part 14 , a lower connecting thread part 15 and a tail part 16 from top to bottom.
[0018] The central hole 21 of the hole opener body 2 is connected with the upper connecting threaded part 12, and at least one positioning hole 22 is arranged at intervals around the center hole 21 at the same time, and the positioning hole 22 provided in this illustration is There are two, and it can be set to one or more as required in practice.
[0019] Here, in order to achieve the function of limiting the circumferential rotation, the circumferential rotation limiting part 13 is set in the shape of a straight hexagonal prism in this illustration, but in practice other straight prisms or elliptical prisms...
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The invention discloses a conveniently replaced hole opener. The conveniently replaced hole opener comprises a connecting handle and a hole opener body. The whole connecting handle is sequentially divided into a center drill part, an upper connecting thread part, a circumferential rotary limiting part, a round handle body part, a lower connecting thread part and a tail part from top to bottom. A center hole of the hole opener body is connected to the upper connecting thread part, and positioning holes are formed around the center hole of the hole opener body; the circumferential rotary limiting part and the round handle body part are externally connected to a bushing, the upper part of an inner hole of the bushing is in fit connection to the circumferential rotary limiting part, so that the whole bushing only can move up and down axially, and the lower part of the inner hole of the bushing is in movable fit connection to the round handle body part; fixed bumps corresponding to the positioning holes in position are arranged at the top end of the bushing; a locking rotary knob is connected to the lower connecting thread part, and the locking rotary knob spins upward to drive the bushing to move upward axially. According to the design of the invention, the self-tightening effect of the body in work can be eliminated fully, so that the connecting handle and the body of the hole opener are detached without other tools. The conveniently replaced hole opener has the characteristics of being simple and practical in structure and convenient to replace.
Description
technical field [0001] The invention relates to a hole opener, in particular to a hole opener which is convenient for replacement. Background technique [0002] Existing hole opener structures such as figure 1 As shown, it is mainly composed of the handle 1' and the opener body 2', and the two are directly connected by the thread 11'. Although this structure can realize the effective connection of the two, it has a big problem. That is to say, after work, the hole saw body 2' will produce a self-tightening effect due to the influence of the hole opening reaction force. As a result, the hole saw body 2' and the handle 1' will be completely locked, and it cannot be disassembled by hand. Special tools such as wrenches are used for disassembly, which makes it very inconvenient to change when it is necessary to use different sizes or types of hole saws. Contents of the invention [0003] In view of the above problems, the present invention designs a hole saw that is easy to r...
Claims
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IPC IPC(8): B23B51/04B23Q11/08
CPCB23B51/0473B23B51/0426B23Q11/08
Inventor 俞安郭
Owner 俞安郭