Cutter positioning and clamping mechanism of numerical control milling machine

Abstract

The utility model provides a numerical control milling machine cutter positioning and clamping mechanism which comprises a fixed seat, a movable disc and a plurality of clamping blocks, the movable disc is rotatably installed inside the fixed seat, a driving mechanism used for driving the movable disc to rotate is further arranged on the fixed seat, spiral threads are arranged at the front end of the movable disc, and the clamping blocks are respectively installed on the edge of the fixed seat in a sliding mode. One sides of the multiple clamping blocks are meshed with the spiral threads respectively, communicating pipes are arranged on one sides of the multiple clamping blocks, piston rods are installed in the communicating pipes in a sliding mode, the other ends of the piston rods are installed at the bottom of the fixing base in a threaded mode respectively, the movable disc rotates, the spiral threads push the clamping blocks to slide towards the center, and the inner sides of the clamping blocks clamp the cutter handle. And meanwhile, the piston rod moves in the communicating pipe, after the milling machine cutter is clamped by the multiple clamping blocks, when the piston rod slides in the communicating pipe, the pressure intensity in the communicating pipe changes, and the adsorption clamping effect is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to clamping mechanism field especially relates to a numerical control milling machine cutter positioning clamping mechanism. BACKGROUND

[0002] At present, in milling machine processing, the cutter for milling machine and milling machine main shaft installation mode mainly relies on morse taper clamping positioning, morse taper is an international standard taper, is used for static fit to accurately position, because the taper is very small, can transmit certain torque, and because of taper, it is convenient to disassemble, morse taper utilizes the principle of friction, within a certain taper range, the workpiece can be freely disassembled.

[0003] With the continuous improvement of cutting machining precision, the existing metric taper as the connecting mode of milling machine main shaft and cutter cannot meet the new machining requirements, and the main problem is that the connection rigidity is not enough, and at high speed, the taper hole of the main shaft expands, the cutter clamping degree is reduced, and the cutter axis deviation phenomenon occurs.

[0004] Therefore, it is necessary to provide a new numerical control milling machine cutter positioning clamping mechanism to solve the above technical problems. SUMMARY

[0005] To solve the above technical problems, the utility model provides a numerical control milling machine cutter positioning clamping mechanism.

[0006] The numerical control milling machine cutter positioning clamping mechanism provided by the utility model includes a fixed seat, a movable disc, a plurality of clamping blocks, the movable disc is rotatably installed in the fixed seat, a driving mechanism for driving the movable disc to rotate is further arranged on the fixed seat, a spiral thread is arranged at the front end of the movable disc, a plurality of clamping blocks are slidably installed at the edge of the fixed seat, one side of each clamping block is engaged with the spiral thread, one side of each clamping block is provided with a communication pipe, a piston rod is slidably installed in each communication pipe, and the other end of each piston rod is threadedly installed at the bottom of the fixed seat.

[0007] Further, the driving mechanism includes a driving motor, a shaft, a bevel gear and a bevel gear plate, the driving motor is fixedly installed on the outside of the fixed seat, the output end of the driving motor is fixedly connected with the shaft, the shaft is rotatably installed on the fixed seat, one end of the shaft is fixedly connected with the bevel gear, the bevel gear is engaged with the bevel gear plate, and the bevel gear plate is fixedly installed on the back of the movable disc.

[0008] Further, a plurality of connecting blocks are arranged at the edge of the bottom of the fixed seat, and one end of each piston rod is threadedly connected with a connecting block.

[0009] Further, the piston rod is fixedly connected with a rotating disc at one end away from the clamping block.

[0010] Further, the bevel gear plate is fixedly connected with a connecting ring on one side, and the connecting ring is rotatably installed in the inner cavity bottom wall of the fixed seat.

[0011] Further, the bevel gear plate and the movable disc are in an integral structure.

[0012] Compared with the related art, the numerical control milling machine tool positioning and clamping mechanism has the following beneficial effects:

[0013] The numerical control milling machine tool positioning and clamping mechanism provided by the utility model has the advantages that when the movable disc rotates, the spiral thread drives the clamping block to slide to the center, the inner side of the clamping block clamps the tool handle, at the same time, the piston rod moves in the communicating pipe, when the piston rod slides in the communicating pipe after the milling machine tool is clamped by the plurality of clamping blocks, the pressure inside the communicating pipe changes, and the adsorption and clamping effect is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The utility model provides numerical control milling machine tool positioning and clamping mechanism's whole structure schematic diagram for the utility model provides numerical control milling machine tool positioning and clamping mechanism's whole structure schematic diagram;

[0015] Figure 2 The utility model provides fixed seat bottom's structure schematic diagram for the utility model provides fixed seat bottom's structure schematic diagram;

[0016] Figure 3 For Figure 2 The utility model provides movable disc's structure schematic diagram for the utility model provides movable disc's structure schematic diagram;

[0017] Figure 4 The utility model provides fixed seat's section structure schematic diagram for the utility model provides fixed seat's section structure schematic diagram;

[0018] Figure 5 For Figure 4 The utility model provides movable disc's structure schematic diagram for the utility model provides movable disc's structure schematic diagram;

[0019] Figure 6 The utility model provides movable disc's structure schematic diagram for the utility model provides movable disc's structure schematic diagram.

[0020] The numerical control milling machine tool positioning and clamping mechanism provided by the utility model has the following beneficial effects: DETAILED DESCRIPTION

[0021] The utility model will be further described below in connection with the drawings and embodiments.

[0022] Please refer to Figure 1 , Figure 2 ,Figure 3 、 Figure 4 、 Figure 5 and Figure 6 wherein, Figure 1 is the overall structure schematic diagram of the numerical control milling machine tool positioning and clamping mechanism provided by the utility model; Figure 2 is the structure schematic diagram of the bottom of the fixing base provided by the utility model; Figure 3 is Figure 2 the enlarged structure schematic diagram of A shown in the figure; Figure 4 is the sectional structure schematic diagram of the fixing base provided by the utility model; Figure 5 is Figure 4 the enlarged structure schematic diagram of B shown in the figure; Figure 6 is the structure schematic diagram of the movable disc provided by the utility model.

[0023] In the specific implementation process, as shown in Figures 1-6 , the numerical control milling machine tool positioning and clamping mechanism comprises a fixing base 1, a movable disc 2 and a plurality of clamping blocks 3, the movable disc 2 is rotatably installed inside the fixing base 1, and the fixing base 1 is further provided with a driving mechanism for driving the movable disc 2 to rotate, the front end of the movable disc 2 is provided with a helical thread 4, the plurality of clamping blocks 3 are slidably installed at the edges of the fixing base 1, and the one side of the plurality of clamping blocks 3 is respectively engaged with the helical thread 4, the one side of the plurality of clamping blocks 3 is provided with a communication pipe 5, the plurality of communication pipes 5 are all slidably installed with piston rods 6, the other ends of the plurality of piston rods 6 are respectively threadedly installed at the bottom of the fixing base 1, and the end of the piston rod 6 away from the clamping block 3 is fixedly connected with a rotating disc 12.

[0024] In one specific implementation, the drive mechanism includes a drive motor 7, a shaft 8, a bevel gear 9, and a bevel gear disk 10. The drive motor 7 is fixedly installed on the outside of the fixed base 1, and its output end is fixedly connected to the shaft 8. The shaft 8 is rotatably installed on the fixed base 1, and one end of the shaft 8 is fixedly connected to the bevel gear 9. The bevel gear 9 meshes with the bevel gear disk 10, which is fixedly installed on the back of the movable disk 2. The bevel gear disk 10 and the movable disk 2 are an integral structure. A connecting ring 13 is fixedly connected to one side of the bevel gear disk 10, and the connecting ring 13 is rotatably installed on the bottom wall of the inner cavity of the fixed base 1. When the drive motor 7 starts, the shaft 8 drives the bevel gear 9 to rotate, and the bevel gear 9 meshes with the bevel gear disk 10, driving... The bevel gear disk 10 and the movable disk 2 rotate synchronously. The spiral pattern 4 at the front end of the movable disk 2 serves as the transmission surface, pushing the clamping block 3 to slide along the edge of the fixed seat 1. The movable disk 2 rotates clockwise, and the spiral pattern 4 pushes the clamping block 3 to slide towards the center. The inner side of the clamping block 3 clamps the tool shank. At the same time, the piston rod 6 moves in the connecting pipe 5. The turntable 12 at the end of the piston rod 6 can adjust the clamping force to ensure that the tool axis is concentric with the milling machine spindle. The movable disk 2 rotates counterclockwise, and the clamping block 3 slides outward along the spiral pattern 4 to release the tool. The piston rod 6 resets, and the turntable 12 returns to its position. After the milling machine tool is clamped by multiple clamping blocks 3, when the piston rod 6 slides in the connecting pipe 5, the pressure inside the connecting pipe 5 changes, further improving the adsorption and clamping effect.

[0025] It should be noted that the bottom edge of the fixed base 1 is provided with multiple connecting blocks 11, and one end of multiple piston rods 6 is threadedly connected to multiple connecting blocks 11 respectively. The position of the piston rods 6 inside the connecting pipe 5 can be adjusted by turning the piston rods 6.

[0026] The working principle of this utility model is as follows: When the mechanism is in use, the drive motor 7 starts, the shaft 8 drives the bevel gear 9 to rotate, the bevel gear 9 meshes with the bevel gear disk 10, and drives the bevel gear disk 10 and the movable disk 2 to rotate synchronously. The spiral pattern 4 at the front end of the movable disk 2 serves as the transmission surface, pushing the clamping block 3 to slide along the edge of the fixed seat 1. The movable disk 2 rotates clockwise, and the spiral pattern 4 pushes the clamping block 3 to slide towards the center. The inner side of the clamping block 3 clamps the tool shank. At the same time, the piston rod 6 moves in the connecting pipe 5. The turntable 12 at the end of the piston rod 6 can adjust the clamping force to ensure that the tool axis is concentric with the milling machine spindle. The movable disk 2 rotates counterclockwise, and the clamping block 3 slides outward along the spiral pattern 4 to release the tool. The piston rod 6 resets, and the turntable 12 returns to its position. After the milling machine tool is clamped by multiple clamping blocks 3, when the piston rod 6 slides in the connecting pipe 5, the pressure inside the connecting pipe 5 changes, further improving the adsorption and clamping effect.

[0027] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0028] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which are made by using the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. A CNC milling machine tool positioning and clamping mechanism, characterized in that, The device includes a fixed base (1), a movable disc (2), and multiple clamping blocks (3). The movable disc (2) is rotatably installed inside the fixed base (1), and the fixed base (1) is also provided with a drive mechanism for driving the movable disc (2) to rotate. The front end of the movable disc (2) is provided with a spiral pattern (4). The multiple clamping blocks (3) are slidably installed on the edge of the fixed base (1), and one side of each of the multiple clamping blocks (3) is engaged with the spiral pattern (4). One side of each of the multiple clamping blocks (3) is provided with a connecting pipe (5), and a piston rod (6) is slidably installed inside each of the multiple connecting pipes (5). The other end of each of the multiple piston rods (6) is threadedly installed on the bottom of the fixed base (1).

2. The CNC milling machine tool positioning and clamping mechanism according to claim 1, characterized in that, The drive mechanism includes a drive motor (7), a shaft (8), a bevel gear (9), and a bevel gear disk (10). The drive motor (7) is fixedly installed on the outside of the fixed base (1). The output end of the drive motor (7) is fixedly connected to the shaft (8). The shaft (8) is rotatably installed on the fixed base (1), and one end of the shaft (8) is fixedly connected to the bevel gear (9). The bevel gear (9) meshes with the bevel gear disk (10). The bevel gear disk (10) is fixedly installed on the back of the movable disk (2).

3. The CNC milling machine tool positioning and clamping mechanism according to claim 2, characterized in that, The bottom edge of the fixed base (1) is provided with multiple connecting blocks (11), and one end of each of the multiple piston rods (6) is threadedly connected to the multiple connecting blocks (11).

4. The CNC milling machine tool positioning and clamping mechanism according to claim 3, characterized in that, A turntable (12) is fixedly connected to one end of the piston rod (6) away from the clamp (3).

5. The CNC milling machine tool positioning and clamping mechanism according to claim 4, characterized in that, A connecting ring (13) is fixedly connected to one side of the bevel gear disc (10), and the connecting ring (13) is rotatably installed on the bottom wall of the inner cavity of the fixed seat (1).

6. The CNC milling machine tool positioning and clamping mechanism according to claim 5, characterized in that, The bevel disc (10) and the movable disc (2) are integrated into one unit.

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