Tool bit cutting face machining device of disposable drill bit for numerical control machine tool

Abstract

The utility model discloses a tool bit cutting face machining device of a disposable drill bit for a numerical control machine tool. The tool bit cutting face machining device comprises a base, a rotating shaft, an angle circle rotating disc and a rotating disc locking mechanism. The rotating shaft penetrates through the base and is rotationally connected with the base, a blind hole is formed in the front end of the rotating shaft in the axial direction, at least one locking screw is arranged at the front end of the rotating shaft in the radial direction, a rectangular groove is formed in the base, the angle circle rotating disc is arranged in the rectangular groove and fixedly connected with the rotating shaft, and a plurality of evenly-distributed through holes are formed in the angle circle rotating disc in the circumferential direction. The turntable locking mechanism comprises a sliding block, a fixed block, a bolt and a pressure spring, a sliding groove is formed in the top of the base, the lower part of the sliding block is arranged in the sliding groove and is in sliding fit with the sliding groove, the fixed block is fixed at the top of the base, a front rod body of the bolt penetrates through the sliding block and is fixedly connected with the sliding block, and a rear rod body of the bolt penetrates through the fixed block and is in sliding connection with the fixed block; the compression spring is located between the sliding block and the fixing block. According to the utility model, one processing device can be used for processing cutting surfaces with various inclined angles on the tool bit.

Description

Technical Field

[0001] The utility model relates to a drill bit processing device, in particular to a cutter head cutting surface processing device of a discarded drill bit for a numerical control machine tool, belonging to the technical field of drilling tool processing. Background Art

[0002] The existing disposable drill bits used in large quantities when machining parts on CNC machine tools include a drill shank and a cutting blade, i.e., a cutter head, which is detachably mounted on the cutting end of the drill shank. The cutter head is made of high-performance, high-hardness alloy tool material, and the drill shank can be made of ordinary steel, thereby saving the use of high-quality alloy tool material and reducing costs. Moreover, after the drill bit is used for a certain period of time and the cutter head is worn, the working performance of the drill bit can be maintained by replacing the cutter head. Compared with traditional drill bits, the service life of the drill bit is extended and the processing cost is reduced. However, since there are many cutting surfaces that need to be processed on the cutter head of the disposable drill bit, and the inclination angles of each cutting surface are also different, and the existing cutter head cutting surface processing device is usually a processing device for processing a cutting surface with a certain inclination angle, resulting in a large number of cutter head cutting surface processing devices, which greatly increases the production cost of the disposable drill bit. Summary of the invention

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a cutting surface processing device for a disposable drill bit for a CNC machine tool which can process cutting surfaces with various inclination angles and has a simple structure, is easy to operate and can greatly reduce the production cost of the drill bit.

[0004] In order to solve the above technical problems, the utility model adopts such a cutter head cutting surface processing device for a discarded drill bit for a CNC machine tool, comprising a base, a rotating shaft, an angle circular rotating disk and a rotating disk locking mechanism; the base is a rectangular parallelepiped, the rotating shaft passes through the base along the length direction of the base and is rotatably connected to the base, a blind hole for placing a discarded drill bit shank is axially provided at the front end of the rotating shaft, at least one locking screw for fixing the discarded drill bit shank is radially provided at the front end of the rotating shaft, a rectangular groove is provided on the base, the angle circular rotating disk is placed in the rectangular groove and the angle circular rotating disk is fixed to the rotating shaft Fixed connection, a plurality of evenly distributed through holes are provided on the angle circular turntable along the circumferential direction, the turntable locking mechanism includes a slider, a fixed block, a latch and a compression spring, a slide groove is provided on the top of the base, the lower part of the slider is placed in the slide groove and slidably cooperates with the slide groove, the fixed block is fixedly installed on the top of the base, and the fixed block and the slider are spaced and parallel along the length direction of the base, the front rod body of the latch passes through the slider and is fixedly connected to the slider, the rear rod body of the latch passes through the fixed block and is slidably connected to the fixed block, and the compression spring is sleeved on the latch and is located between the slider and the fixed block.

[0005] As a preferred embodiment of the present invention, the central angle between two adjacent through holes on the angle circular turntable is 5°, 10°, 20° or 30°.

[0006] As a preferred embodiment of the utility model, a pull handle is provided at the rear end of the latch, a rotating lever is provided at the rear end of the rotating shaft, and an angle scale line is marked at each through hole of the angle circular rotating disk.

[0007] After adopting the above structure, the utility model has the following beneficial effects:

[0008] When the utility model is working, the drill shank of the discarded drill bit is inserted into the blind hole at the front end of the rotating shaft, and the drill shank is fixedly installed at the front end of the rotating shaft by tightening the locking screw, and then the rotating shaft is rotated and the pins are inserted into different through holes on the angle circular turntable to cooperate in processing cutting surfaces with different inclined angles on the cutter head of the discarded drill bit. The utility model adopts one processing device to process cutting surfaces with various inclined angles on the cutter head, and has a simple structure and easy operation, which greatly reduces the production cost of the drill bit.

[0009] The utility model has a pull handle at the rear end of the latch, a rotating lever at the rear end of the rotating shaft, and an angle scale line marked on each through hole of the angle circular rotating disk. Such a structure makes processing and operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0011] Figure 1 The utility model is a three-dimensional schematic diagram of a cutter head cutting surface processing device of a discarded drill bit for a numerically controlled machine tool.

[0012] Figure 2 Another stereoscopic schematic diagram of the tool head cutting surface processing device of the discarded drill bit for CNC machine tools of the utility model. DETAILED DESCRIPTION

[0013] See also Figure 1 , Figure 2The device for machining the cutting surface of a disposable drill bit for a numerically controlled machine tool shown in the figure comprises a base 1, a rotating shaft 2, an angle circular rotating disk 3 and a rotating disk locking mechanism 4; the base 1 is a rectangular parallelepiped, the rotating shaft 2 passes through the base 1 along the length direction of the base 1 and is preferably rotatably connected to the base 1 through a bearing 5, a blind hole 2-1 for placing a shank of a disposable drill bit is axially provided at the front end of the rotating shaft 2, the disposable drill bit, its shank and the cutter head are not shown in the figure, at least one locking screw 2-2 for fixing the shank of the disposable drill bit is radially provided at the front end of the rotating shaft 2, a rectangular groove 1-1 is provided on the base 1, the rectangular groove 1-1 shown in the figure is provided in the middle part of the base 1, the angle circular rotating disk 3 is placed in the rectangular groove 1-1 and the angle circular rotating disk 3 is fixedly connected to the rotating shaft 2, during implementation, it is only necessary to fix the middle part of the angle circular rotating disk 3 on the rotating shaft 2, in the utility model, the angle circular rotating disk 3 can also be fixedly mounted on the rotating shaft 2 through a key block keyway The connecting structure is connected with the rotating shaft 2. A plurality of evenly distributed through holes 3-1 are provided on the angle circular rotating disk 3 along the circumferential direction. The through holes 3-1 are used as indexing holes. The rotating disk locking mechanism 4 includes a slider 4-1, a fixing block 4-2, a latch 4-3 and a compression spring 4-4. A slide groove 1-2 is provided on the top of the base 1. The slider 4-1 is preferably T-shaped. The lower part of the slider 4-1 is preferably vertically placed in the slide groove 1-2 and slidably cooperates with the slide groove 1-2. The fixed block 4-2 is fixedly installed on the top of the base 1, and the fixed block 4-2 and the slider 4-1 are spaced and parallel along the length direction of the base 1. The front rod of the pin 4-3 passes through the slider 4-1 and is fixedly connected to the slider 4-1. The rear rod of the pin 4-3 passes through the fixed block 4-2 and is slidably connected to the fixed block 4-2. The compression spring 4-4 ​​is sleeved on the pin 4-3 and is located between the slider 4-1 and the fixed block 4-2.

[0014] As a preferred embodiment of the present invention, the central angle between two adjacent through holes 3 - 1 on the angle circular rotating disk 3 is 5°, 10°, 20° or 30°, and of course it can be other angle values.

[0015] As a preferred embodiment of the present invention, Figure 1 , 2 As shown, a pull handle 4 - 5 is provided at the rear end of the latch 4 - 3 , a rotating lever 2 - 3 is provided at the rear end of the rotating shaft 2 , and an angle scale line 6 is marked at each through hole 3 - 1 of the angle circular rotating disk 3 .

[0016] When the utility model is working, the drill shank of the discarded drill bit is inserted into the blind hole 2-1 at the front end of the rotating shaft 2, and the drill shank is fixedly installed at the front end of the rotating shaft 2 by tightening the locking screw 2-2, and then the rotating shaft 2 is rotated and the pin 4-3 is inserted into different through holes 3-1 on the angle circular rotating disk 3 to cooperate in processing the cutting surfaces with different inclined angles on the cutter head of the discarded drill bit. The utility model adopts one processing device to process the cutting surfaces with various inclined angles on the cutter head.

[0017] After trial use, the utility model has been found to have a simple structure and is easy to operate. One processing device can process cutting surfaces with various inclination angles on the cutter head, thereby reducing the production cost of the drill bit and achieving good practical effects.

Claims

1. A device for machining the cutting surface of a cutter head of a discard drill bit for a numerically controlled machine tool, characterized in that: The invention comprises a base (1), a rotating shaft (2), an angle rotating disk (3) and a rotating disk locking mechanism (4); the base (1) is in the form of a rectangular parallelepiped; the rotating shaft (2) passes through the base (1) along the length direction of the base (1) and is rotatably connected to the base (1); a blind hole (2-1) for placing a disposable drill shank is axially provided at the front end of the rotating shaft (2); at least one locking screw (2-2) for fixing the disposable drill shank is radially provided at the front end of the rotating shaft (2); a rectangular groove (1-1) is provided on the base (1); the angle rotating disk (3) is placed in the rectangular groove (1-1) and is fixedly connected to the rotating shaft (2); a plurality of evenly distributed through holes (3-1) are provided on the angle rotating disk (3) along the circumferential direction; the rotating disk locking mechanism (4) comprises a sliding A block (4-1), a fixed block (4-2), a latch (4-3) and a compression spring (4-4); a slide groove (1-2) is provided on the top of the base (1); the lower part of the slider (4-1) is placed in the slide groove (1-2) and slidably cooperates with the slide groove (1-2); the fixed block (4-2) is fixedly installed on the top of the base (1); the fixed block (4-2) and the slider (4-1) are spaced and arranged in parallel along the length direction of the base (1); the front rod of the latch (4-3) passes through the slider (4-1) and is fixedly connected to the slider (4-1); the rear rod of the latch (4-3) passes through the fixed block (4-2) and is slidably connected to the fixed block (4-2); and the compression spring (4-4) is sleeved on the latch (4-3) and is located between the slider (4-1) and the fixed block (4-2).

2. The cutter head cutting surface processing device of a discard drill bit for a CNC machine tool according to claim 1, characterized in that: The central angle between two adjacent through holes (3-1) on the angle circular rotating disk (3) is 5°, 10°, 20° or 30°.

3. The cutter head cutting surface processing device of a discard drill bit for a CNC machine tool according to claim 1 or 2, characterized in that: A pull handle (4-5) is provided at the rear end of the latch (4-3), a rotating lever (2-3) is provided at the rear end of the rotating shaft (2), and an angle scale line is marked at each through hole (3-1) of the angle circular rotating disk (3).

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