Stable supporting structure for tool bit of numerical control machine tool

Abstract

The utility model relates to the technical field of numerical control machine tool cutting heads, in particular to a numerical control machine tool cutting head stable type supporting structure which comprises a cutter handle body and a supporting device, a cutting head body is arranged below the cutter handle body, the supporting device is arranged on the surface of the cutter handle body, and the supporting device comprises three sliding frames. The three sliding frames are fixedly connected with the surface of the knife handle body, the inner walls of the sliding frames are slidably connected with supporting rods, the inner walls of the supporting rods are slidably connected with supporting blocks, the inner walls of the sliding frames are rotatably connected with transmission screws, the transmission screws are in threaded connection with the inner walls of the supporting rods, and the surfaces of the two sides of each sliding frame are fixedly connected with sliding blocks correspondingly. By arranging the supporting device, the tool bit installed on the numerical control machine tool can be supported, vibration of the tool bit in the high-speed rotating and cutting process is effectively reduced, the tool bit is kept stable when bearing large cutting force, the machining precision and the surface quality are improved, and then the stabilizing effect of the tool bit of the numerical control machine tool in the machining process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of CNC machine tool cutter heads, in particular to a stable supporting structure of a CNC machine tool cutter head. Background Art

[0002] A CNC machine tool is an automated machine tool equipped with a program control system. The cutter head of a CNC machine tool is a key component for cutting processing. There are many types of cutter heads for CNC machine tools, including drilling heads, such as twist drill heads, deep hole drill heads, etc. The drilling heads are usually installed on the tool holder for processing.

[0003] The prior art includes a utility model with a publication number of CN207668958U. The utility model discloses a tool head seat for a CNC machine tool, comprising an upper shell, a lower shell, a motor tool seat and a spindle. The motor is arranged inside the tool seat. The upper shell and the lower shell are tightly connected to the tool seat by super glue. The spindle is embedded in the tool seat, and one end of the spindle is connected to the motor by a rotating shaft, and the other end is embedded with a tool body. A circular groove is arranged at one end of the spindle embedded in the tool seat, a first groove is arranged at one end of the upper shell and the lower shell, and a first screw is arranged in the first groove. The first screw is embedded in the tool seat, and the circular groove fits. A mounting plate is arranged on one side of the tool seat, and one end of the upper shell and the lower shell are embedded in the mounting plate. A wiring hole is penetrated in the middle of the mounting plate to solve the problems of the existing tool head seat, which is inconvenient to disassemble and assemble, the tool shaft is easy to shake, the working efficiency is low, it is not easy to carry, and the tool seat is easy to get dusty.

[0004] In daily work, it is found that when installing the existing CNC machine tool drilling heads, the drilling heads are usually installed on the tool holders in the CNC machine tools. Since the drilling heads are too long and most of the heads are on the outside, the tool holders can only support the heads through the connection parts, resulting in poor overall support effect. The tool head processing is prone to instability, which in turn leads to poor stability of the existing CNC machine tool heads after installation and unstable processing. Summary of the invention

[0005] The utility model aims to solve the shortcomings of the prior art that a CNC machine tool cutter head has poor stability after installation and unstable processing, and proposes a stable support structure for the CNC machine tool cutter head.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a stable support structure for a CNC machine tool cutter head, comprising a cutter head body and a supporting device, a cutter head body is arranged below the cutter head body, the supporting device is arranged on the surface of the cutter head body, the supporting device comprises a slide frame, the number of the slide frames is three, and the three slide frames are fixedly connected to the surface of the cutter head body, the inner wall of the slide frame is slidably connected with a support rod, the inner wall of the support rod is slidably connected with a support block, the inner wall of the slide frame is rotatably connected with a transmission screw, the transmission screw is threadedly connected to the inner wall of the support rod, the two side surfaces of the slide frame are respectively fixedly connected with sliders, the slider is slidably connected to the inner wall of the slide frame, a positioning assembly is arranged on the surface of the support rod, and a control assembly is arranged on the surface of the cutter head body, through the above-mentioned components, the transmission screw can be driven to rotate by the control assembly, the transmission screw can drive the support rod and the support block to move in the slide frame, so that the support block contacts the surface of the cutter head body, thereby realizing the supporting effect, the support block can slide in the support rod to adjust its position, and the positioning assembly can perform positioning.

[0007] Preferably, the supporting surface of the supporting block is arranged in an arc-shaped surface. Through the above-mentioned components, the arc-shaped surface in the supporting block can contact the surface of the cutter head body, thereby playing a better supporting role.

[0008] Preferably, the control component includes a rotating ring, which is rotatably connected to the surface of the shank body, and the surface of the rotating ring is fixedly connected with a bevel gear 1, and one end of the transmission screw is fixedly connected with a bevel gear 2, and the bevel gear 1 is meshingly connected with the bevel gear 2. Through the above components, when the rotating ring drives the bevel gear 1 to rotate, the bevel gear 1 can control the three groups of bevel gears 2 to rotate, so that the transmission screw can adjust the three groups of support rods at the same time.

[0009] Preferably, a threaded sleeve is fixedly connected to the surface of the rotating ring, and a clamping screw is threadedly connected to the inner wall of the threaded sleeve. The clamping screw is connected through the inner wall of the rotating ring. Through the above components, the clamping screw can be rotated in the threaded sleeve after rotation and adjustment, and the clamping screw can be pressed on the surface of the shank body to achieve the function of limiting the rotating ring.

[0010] Preferably, the positioning assembly includes a hollow sleeve, which is fixedly connected to the surface of the support rod, and the inner wall of the hollow sleeve is slidably connected with an insertion rod. The surface of the support block is provided with a plurality of circular holes, and the insertion rod is plugged into the inner walls of the circular holes. Through the above components, after the support block is slidably adjusted in the support rod, the insertion rod can be inserted into the corresponding circular hole on the surface of the support block to complete the limiting.

[0011] Preferably, a spring is provided on the surface of the insertion rod, and the two ends of the spring are fixedly connected to the insertion rod and the inner wall of the hollow sleeve respectively. Through the above components, the spring can control the insertion rod to reset, so that the insertion rod can be stably inserted into the circular hole on the surface of the support block, thereby improving the stability effect.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, by providing a supporting device, the cutter head installed on the CNC machine tool can be supported, effectively reducing the vibration of the cutter head during high-speed rotation and cutting, so that the cutter head remains stable when subjected to a large cutting force, improving the processing accuracy and surface quality, and thus improving the stability of the CNC machine tool cutter head during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional structural diagram of a stable support structure for a CNC machine tool cutter head proposed by the utility model;

[0015] Figure 2 The utility model proposes a stable support structure for the cutter head of a CNC machine tool. Figure 1 Schematic diagram of the structure at A in the middle;

[0016] Figure 3 This is a side view structural diagram of the stable support structure of the CNC machine tool cutter head proposed by the utility model;

[0017] Figure 4 This is a partial structural diagram of the support device of the CNC machine tool tool head stable support structure proposed by the utility model;

[0018] Figure 5 The utility model provides a partial cross-sectional structural schematic diagram of a support device for a stable support structure of a CNC machine tool cutter head.

[0019] Legend:

[0020] 1. Tool handle body; 2. Tool head body; 3. Support device; 31. Slide frame; 32. Support rod; 33. Support block; 34. Positioning assembly; 341. Hollow sleeve; 342. Insert rod; 343. Spring; 344. Round hole; 35. Control assembly; 351. Rotating ring; 352. Bevel gear 1; 353. Threaded sleeve; 354. Pressing screw; 355. Bevel gear 2; 36. Transmission screw; 37. Arc surface; 38. Slider. DETAILED DESCRIPTION

[0021] See also Figure 1-Figure 5 The utility model provides a technical solution: a stable support structure for a CNC machine tool cutter head, comprising a cutter handle body 1 and a support device 3, a cutter head body 2 is arranged below the cutter handle body 1, and the support device 3 is arranged on the surface of the cutter handle body 1.

[0022] Specifically, the supporting device 3 includes a slide frame 31, and the number of the slide frames 31 is three distributed along the circumferential direction. The three slide frames 31 are fixedly connected to the surface of the tool handle body 1. The inner wall of the slide frame 31 is slidably connected to a support rod 32, and the inner wall of the support rod 32 is slidably connected to a support block 33. The inner wall of the slide frame 31 is rotatably connected to a transmission screw 36, and the transmission screw 36 is threadedly connected to the inner wall of the support rod 32. Slide blocks 38 are fixedly connected to the two side surfaces of the slide frame 31 respectively, and the slide blocks 38 are slidably connected to the inner wall of the slide frame 31. A positioning component 34 is provided on the surface of the support rod 32, and a control component 35 is provided on the surface of the tool handle body 1.

[0023] In this embodiment: the control component 35 can be used to drive the transmission screw 36 to rotate, and the transmission screw 36 can drive the support rod 32 and the support block 33 to move in the slide frame 31, so that the support block 33 contacts the surface of the cutter head body 2, thereby achieving a supporting effect. The support block 33 can slide in the support rod 32 to adjust the position, and the positioning component 34 can perform positioning.

[0024] Specifically, the supporting surface of the supporting block 33 is configured as an arc-shaped surface 37 , and the arc-shaped surface 37 in the supporting block 33 can contact the surface of the cutter head body 2 , thereby playing a better supporting role.

[0025] Specifically, the control component 35 includes a rotating ring 351, which is rotatably connected to the surface of the handle body 1, and the surface of the rotating ring 351 is fixedly connected with a bevel gear 1 352, one end of the transmission screw 36 is fixedly connected with a bevel gear 2 355, and the bevel gear 1 352 is meshingly connected with the bevel gear 2 355.

[0026] In this embodiment, when the rotating ring 351 drives the bevel gear 1 352 to rotate, the bevel gear 1 352 can control the three groups of bevel gear 2 355 to rotate, so that the transmission screw 36 can adjust the three groups of support rods 32 at the same time.

[0027] Specifically, a threaded sleeve 353 is fixedly connected to the surface of the rotating ring 351, and a clamping screw 354 is threadedly connected to the inner wall of the threaded sleeve 353. The clamping screw 354 is connected through the inner wall of the rotating ring 351. After the rotation is adjusted, the clamping screw 354 can be rotated in the threaded sleeve 353, and the clamping screw 354 can be pressed on the surface of the shank body 1, thereby limiting the rotating ring 351.

[0028] Specifically, the positioning assembly 34 includes a hollow sleeve 341, which is fixedly connected to the surface of the support rod 32, and the inner wall of the hollow sleeve 341 is slidably connected with an insertion rod 342. A plurality of circular holes 344 are opened on the surface of the support block 33, and the insertion rod 342 is plugged into the inner wall of the circular hole 344.

[0029] In this embodiment: after the support block 33 is slidably adjusted in the support rod 32, the insertion rod 342 can be inserted into the corresponding circular hole 344 on the surface of the support block 33 to complete the limiting.

[0030] Specifically, a spring 343 is sleeved on the surface of the insertion rod 342, and the two ends of the spring 343 are fixedly connected to the insertion rod 342 and the inner wall of the hollow sleeve 341 respectively. The spring 343 can control the insertion rod 342 to reset, so that the insertion rod 342 can be stably inserted in the circular hole 344 on the surface of the support block 33, thereby improving the stability effect.

[0031] Working principle: When the cutter head body 2 is installed in the handle body 1, the rotating ring 351 can be rotated, and the rotating ring 351 drives the bevel gear 1 352 to rotate. The bevel gear 1 352 simultaneously drives the three sets of bevel gear 2 355 to rotate. The bevel gear 2 355 drives the transmission screw 36 to rotate, thereby controlling the support rod 32 and the slider 38 to move in the slide frame 31. When moving, the support rod 32 can drive the arc surface 37 on the surface of the support block 33 to fit on the cutter head body 2. The three sets of support rods 32 and the support block 33 can realize the function of supporting and reinforcing the cutter head body 2. After support, the threaded sleeve 3 53, the clamping screw 354 is rotated and the clamping screw 354 can be pressed on the shank body 1 to limit the rotating ring 351. When the position of the support block 33 needs to be adjusted, only the insertion rod 342 needs to be pulled and the spring 343 needs to be stressed. After the insertion rod 342 is pulled out from the circular hole 344 on the surface of the support block 33, the support block 33 is slid in the support rod 32. After the position is adjusted, the insertion rod 342 is released and the spring 343 drives the pin to reset so that the pin is inserted into the corresponding circular hole 344 on the surface of the adjustment block. The adjustment can be completed and the support can be completed, thereby improving the overall stability and strength of the tool head body 2 during processing.

Claims

1. A stable support structure for a tool head of a numerically controlled machine tool, comprising a tool handle body (1) and a support device (3), characterized in that: A cutter head body (2) is arranged below the tool handle body (1); the support device (3) is arranged on the surface of the tool handle body (1); the support device (3) comprises a slide frame (31); there are three slide frames (31); the three slide frames (31) are fixedly connected to the surface of the tool handle body (1); the inner wall of the slide frame (31) is slidably connected to a support rod (32); the inner wall of the support rod (32) is slidably connected to a support block (33); the inner wall of the slide frame (31) is rotatably connected to a transmission screw (36); the transmission screw (36) is threadedly connected to the inner wall of the support rod (32); sliders (38) are fixedly connected to the two side surfaces of the slide frame (31); the sliders (38) are slidably connected to the inner wall of the slide frame (31); a positioning component (34) is arranged on the surface of the support rod (32); and a control component (35) is arranged on the surface of the tool handle body (1).

2. The stable support structure for a CNC machine tool cutter head according to claim 1, characterized in that: The supporting surface of the supporting block (33) is arranged in the form of an arc-shaped surface (37).

3. The stable support structure for a CNC machine tool cutter head according to claim 1, characterized in that: The control assembly (35) comprises a rotating ring (351), the rotating ring (351) being rotatably connected to the surface of the tool handle body (1), the surface of the rotating ring (351) being fixedly connected to a bevel gear 1 (352), one end of the transmission screw (36) being fixedly connected to a bevel gear 2 (355), the bevel gear 1 (352) being meshingly connected to the bevel gear 2 (355).

4. The stable support structure for a CNC machine tool cutter head according to claim 3, characterized in that: A threaded sleeve (353) is fixedly connected to the surface of the rotating ring (351), a pressing screw (354) is threadedly connected to the inner wall of the threaded sleeve (353), and the pressing screw (354) is connected through the inner wall of the rotating ring (351).

5. The stable support structure for a CNC machine tool cutter head according to claim 1, characterized in that: The positioning assembly (34) comprises a hollow sleeve (341), the hollow sleeve (341) being fixedly connected to the surface of the support rod (32), an insertion rod (342) being slidably connected to the inner wall of the hollow sleeve (341), a plurality of circular holes (344) being formed on the surface of the support block (33), and the insertion rod (342) being plugged into the inner walls of the circular holes (344).

6. The stable support structure for a CNC machine tool cutter head according to claim 5, characterized in that: A spring (343) is sleeved on the surface of the insertion rod (342), and two ends of the spring (343) are respectively fixedly connected to the insertion rod (342) and the inner wall of the hollow sleeve (341).

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