Shank installation structure and cutters
A technology for installing structures and handles, applied in positioning devices, drilling tool accessories, manufacturing tools, etc., can solve the problems of increased number of parts, complex structure, complicated assembly, etc., and achieve the effect of reduced number of parts, good structure, and simple assembly
Inactive Publication Date: 2002-11-13
MIYANAGA KK
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Problems solved by technology
[0007] Second, in the case of the existing one-touch handle mounting structure, the supporting member that restricts the locking member from jumping out of the handle mounting hole of the mandrel is spring-loaded from the base end of the mandrel so that it is positioned on the locking member. side, but the structure of this part is complicated and the number of parts will increase
In addition, when assembling, it is necessary to restrain the supporting member and the spring for biasing the supporting member from the handle mounting hole to the opening, and assemble while positioning each member, which becomes complicated and requires skilled work.
[0008] Third, in the case of drilling after the tool is inserted into the single-touch or double-touch handle installation structure, if the drilling operation is subjected to the effect of rotational torque, especially impact rotational torque, the above-mentioned The edge of the engaging part of the handle is deformed radially outward by the locking member and protrudes, and as a result, the protruding part is caught, causing inconvenience that the handle cannot be pulled out from the mandrel.
In this case, the drilling operation will be interrupted for a long time, causing great economic losses
In particular, rattling due to the above-mentioned permissible dimensional error may also occur in the rotation direction (circumferential direction) of the handle relative to the spindle, but in this case, the above-mentioned deformation dimension increases.
Method used
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[0058] The handle attachment structure of the embodiment of the present invention and the knife provided with the handle used in the attachment structure will be described in detail below with reference to the drawings, but the present invention is not limited to this embodiment.
[0059] In the display of this embodiment figure 1 , in Fig. 2, A is to represent the mandrel that is installed on the side of the drilling device; B is to represent that the base end is equipped with the handle 7 that can be disassembled on the mandrel A and has a cutting tool with a blade 15 at the front end; The location of B has the function of an on-off valve for supplying coolant, and a center pin for discharging core-shaped chips after removal from the tool.
[0060] Mandrel A, such as figure 1 Or as shown in Figure 2, at the front end of the mandrel base 1 (in figure 1 , Figure 2 is the lower end) with the opening 2A of the handle mounting hole 2. Also, at the outer peripheral portion of t...
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A cutter (B) for use with a shank attaching structure in which a lock member (5) is disposed on an inner periphery of a shank attaching bore opening at a tip of an arbor (A) so as to be radially outwardly retractable and a shank (7) provided at a base end of the cutter is formed with a concave engaging portion (7B) for engagement with the lock member disposed on the arbor side so as to be capable of being removably fitted into the shank attaching bore of the arbor quickly, where: a concave portion forming the engaging portion has an outer peripheral edge portion (7C) which is dented from a neighbouring peripheral surface of the shank.
Description
technical field [0001] The present invention relates to a handle installation structure capable of installing the handle on the spindle of the drilling machine in a one-touch, i.e. quick and easy manner, and a tool (not referring to a tool in a narrow sense) provided with a handle suitable for the installation structure. , is a broad concept that includes the drill bit and the joint integrated with the base end of the tool. It is the same in this manual). technical background [0002] At present, there is a so-called screw-locking handle installation structure, which is installed on the mandrel of the rotating shaft of the drilling device (electric drill or drilling machine) at its base end, and the handle of the tool is fixed with screws from the side. Moreover, the screw lock type handle mounting structure is currently the most popular on a global scale. [0003] However, in the case of the screw-locking handle installation structure, whenever the ...
Claims
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IPC IPC(8): B23B31/107B23B51/04B23Q3/12
CPCB23B31/1071B23B51/0426B23B51/0473Y10T279/17752Y10T408/953Y10T408/895Y10T279/3481
Inventor 宫永昌明
Owner MIYANAGA KK