An integrated hole opener
A hole opener and integrated technology, applied in the field of mechanical processing, can solve the problems of loosening and falling off, reducing production efficiency, low production efficiency, etc., and achieve the effect of not easy to loosen and damage, improve production efficiency, and simple structure
Inactive Publication Date: 2018-05-29
梁庆达
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Problems solved by technology
The fixing method of interference connection and bonding is convenient for processing and assembly, but during the use of the hole saw, vibration is usually generated, and there is also a large torsional force between the parts. When the center drill and the main body of the drill bit cut the plate It is also easy to heat and expand, so that the various parts of the hole saw are prone to loosening and falling off, resulting in damage to the hole saw; the fixing method of welding is relatively firm, but the production and assembly are more complicated in this way, which reduces production efficiency
[0003] The handles of the existing hole saws are usually made of cast iron or steel, and the cost is relatively high. At the same time, most of the existing hardware processing manufacturers do not have the conditions to adopt the casting molding process. The handles can only be connected with the hole saws by cold working or welding. other components to connect and install, the production efficiency is low
Method used
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Embodiment Construction
[0020] refer to Figure 1 to Figure 5 , a kind of one-piece hole opener, comprising center drill 10, drill body 20 and handle 30, the base plate of drill body 20 is provided with a regular hexagonal installation hole 21, and the front portion of handle 30 is provided with an annular groove 31 , the annular groove 31 is located in the mounting hole 21 and its cross-sectional shape and size match the mounting hole 21, which can limit the rotation and radial movement of the drill body 20 relative to the handle 30. The width of the annular groove 31 is the same as that of the drill body The bottom plate of 20 has the same thickness, so that the parts at the two ends of the annular groove 31 on the rotating handle 30 can clamp the bottom plate of the drill body 20 to limit the axial movement of the drill body 20 relative to the rotating handle 30, so that the drill body 20 is fixed. On the rotating handle 30, and because the part of the rotating handle 30 inserted in the mounting h...
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The invention discloses an integrated hole drilling device. The integrated hole drilling device comprises a rotating handle, a central drill and a drill bit body, wherein the central drill and the drill bit body are fixedly connected with the rotating handle. The rear end of the center drill is inserted into the rotating handle. The integrated hole drilling device is characterized in that an installation hole is formed in a base plate of the drill bit body, an annular groove matched with the installation hole is formed in the front portion of the rotating handle, the drill bit body is fixedly connected with the rotating handle through the annular groove, the center drill is provided with a locating protruding block located in the rotating handle, and a concave hole containing the locating protruding block is formed in the rotating handle. The integrated hole drilling device is firm in structure, not prone to looseness or damage, convenient to machine and product, and capable of effectively improving production efficiency.
Description
technical field [0001] The invention belongs to the field of mechanical processing, in particular to an integrated hole opener. Background technique [0002] Hole saws are often used to open circular through holes on thin metal plates or wood boards. The existing hole saws usually insert the center drill in the front of the handle, and then fix the handle on the drill body. On the bottom plate, the connections between the components are fixed by means of riveting, interference connection, bonding or welding. The fixing method of interference connection and bonding is convenient for processing and assembly, but during the use of the hole saw, vibration is usually generated, and there is also a large torsional force between the parts. When the center drill and the main body of the drill bit cut the plate It is also easy to heat and expand, so that the various parts of the hole saw are prone to loosening and falling off, causing damage to the hole saw; the fixing method of wel...
Claims
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IPC IPC(8): B23B51/12
CPCB23B51/0426
Inventor 梁庆达
Owner 梁庆达