Cutter clamping and positioning device of machining center

Abstract

The utility model discloses a machining center cutter clamping and positioning device which comprises a main mechanical arm, and one side, close to the bottom, of the main mechanical arm is rotationally connected with a first motor. When the cutter needs to be replaced, the cutter mounting shaft faces the outer side of a machine tool through the driving mechanism, the annular sleeve drives the insertion rod to be inserted into the insertion groove, the cutter can drive the clamping block to drive the clamping groove to be rotated out, the cutter moves from the mounting groove, and the cutter needing the mounting groove is inserted into the mounting groove; meanwhile, a clamping block is driven to be inserted into a vertical groove of a clamping groove, an insertion rod is pushed to overcome the elastic force of a spring to retract into an insertion rod groove, then the tool rotates to drive the clamping block to move into a transverse groove of the clamping groove, meanwhile, the insertion rod groove and an insertion groove are aligned, the spring pushes the insertion rod to be inserted into the insertion groove, rotation of the tool can be avoided, and then the tool can be fixedly installed. And operation of workers is facilitated, meanwhile, the tool can be rapidly disassembled and assembled, and then the tool replacement efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of tool clamping technology, specifically a tool clamping and positioning device for machining centers. Background Technology

[0002] In the field of CNC machining, machining centers, as high-precision and high-efficiency manufacturing equipment, require tool clamping and positioning devices to install the tools when used.

[0003] Current machining center tool clamping and positioning devices, such as the high-precision machining center tool clamping device proposed in publication number CN220838957U, include a main robotic arm, a secondary robotic arm, and a clamping block. The main and secondary robotic arms have slideways with grooves within them, and a rack block is located within the grooves. The main robotic arm has an internal cavity containing a motor and a rotating shaft. The secondary robotic arm has a positioning hole with a rotatably connected positioning column. A clamping block is located at the outer end of the positioning column. A semi-circular block is located at the bottom of the positioning hole, and an insertion hole is located at the head end of the positioning column. The semi-circular block is inserted into the insertion hole, and a right-angled sector block is located within the insertion hole. The lower plane of the right-angled sector block and half of the upper plane of the semi-circular block are tightly fitted together. This invention utilizes the cooperation between the right-angled sector block and the semi-circular block, along with the function of the rack block, to make the clamping block horizontal when installing the tool, facilitating installation and disassembly while maintaining precision during machining.

[0004] Existing tool clamping and positioning devices for machining centers, while enabling the clamping block to be horizontal when installing tools for ease of installation and removal and maintaining accuracy during machining, have been found to have limitations. These limitations only allow the clamping block to be horizontal when installing tools; the tool is still fixed using traditional methods such as threaded clamps or detachable jigs. These methods are cumbersome and time-consuming, making them unsuitable for mass production. Therefore, we propose a new tool clamping and positioning device for machining centers to address these issues. Utility Model Content

[0005] The purpose of this utility model is to provide a tool clamping and positioning device for machining centers. This device allows for the adjustment of the tool mounting axis, facilitating operation by the staff. Furthermore, the tool disassembly and assembly structure enables rapid tool disassembly and assembly, thereby effectively improving tool replacement efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tool clamping and positioning device for a machining center, comprising a main robotic arm, wherein a first motor is rotatably connected to the main robotic arm near its bottom, and a tool mounting shaft is rotatably connected to the shaft end of the first motor, wherein...

[0007] The main robotic arm is equipped with a drive mechanism for driving the first motor to rotate. A tool is provided below the tool mounting shaft. A mounting groove is provided at the bottom end of the tool mounting shaft. Slots are symmetrically provided on the inner walls of both sides of the mounting groove. A locking block is fixedly connected to the outer side of the tool corresponding to the slot. A rod insertion slot is connected to the top of the inner side of the tool mounting shaft corresponding to the mounting groove.

[0008] The top of the cutting tool has a slot, a spring is installed on the top of the inner side of the insertion slot, and an insertion rod is installed at the bottom of the spring. The cutting tool mounting shaft has symmetrical connecting slots on both sides of the insertion slot. A connecting rod is fixedly connected to one side of the insertion rod corresponding to the connecting slot. An annular sleeve is fitted on the outer side of the cutting tool mounting shaft, and the end of the connecting rod away from the insertion rod is fixedly connected to the inner wall of the annular sleeve.

[0009] Preferably, the drive mechanism includes a rotating shaft, the first motor is rotatably connected to the main robotic arm via the rotating shaft, a second motor is mounted on the side of the main robotic arm away from the first motor, a worm gear is mounted on the end of the rotating shaft, and a worm is mounted on the shaft end of the second motor corresponding to the worm gear.

[0010] Preferably, the tooth pitch of the worm wheel and the worm is equal, and the worm wheel and the worm mesh with each other.

[0011] Preferably, the card slot is L-shaped, and the lateral groove size of the card slot matches the external size of the card block.

[0012] Preferably, the insertion rod is rectangular columnar, and the external dimensions of the insertion rod match the internal dimensions of the slot.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. In this utility model, when a tool needs to be replaced, the drive mechanism drives the first motor and the tool mounting shaft to rotate as a whole, so that the tool mounting shaft faces the outside of the machine tool, making it convenient for the operator to operate. Then, the ring sleeve and connecting rod drive the insert rod to overcome the spring force and move out of the slot, so that the tool can drive the locking block to drive the locking slot to move out through rotation, so that the tool can be moved out of the mounting slot. The tool to be installed is taken out and inserted into the mounting slot. At the same time, the locking block is driven to insert into the vertical slot of the locking slot, and the insert rod is pushed to overcome the spring force and retract into the insert rod slot. Then, the tool is rotated to drive the locking block to move into the horizontal slot of the locking slot. At the same time, the insert rod slot and the slot are aligned. The spring pushes the insert rod to insert into the slot, which can prevent the tool from rotating, and thus complete the fixed installation of the tool. Through this clamping and positioning device, the direction of the tool mounting shaft can be adjusted, which is convenient for the operator to operate. At the same time, through the tool disassembly and assembly structure, the tool can be quickly disassembled and assembled, thus effectively improving the tool replacement efficiency.

[0015] 2. In this utility model, when the second motor is working, it drives the worm to rotate. The worm drives the worm wheel to rotate through meshing, so that the worm wheel drives the first motor and the tool mounting shaft to rotate as a whole through the rotating shaft. This makes it convenient to adjust the mounting orientation of the tool mounting shaft. At the same time, through the one-way transmission structure formed by the worm wheel and worm, the rotation of the first motor and the tool mounting shaft as a whole can be automatically locked, preventing the first motor and the tool mounting shaft from rotating automatically under force. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the tool mounting shaft of this utility model;

[0018] Figure 3 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0019] In the diagram: 1. Main robotic arm; 2. First motor; 3. Tool mounting shaft; 4. Rotary shaft; 5. Second motor; 6. Worm gear; 7. Worm; 8. Tool; 9. Mounting slot; 10. Slot; 11. Block; 12. Insert rod slot; 13. Slot; 14. Spring; 15. Insert rod; 16. Connecting slot; 17. Connecting rod; 18. Annular sleeve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1 to 3 This utility model provides a technical solution: a tool clamping and positioning device for a machining center, including a main robotic arm 1, a first motor 2 rotatably connected to the bottom side of the main robotic arm 1, and a tool mounting shaft 3 rotatably connected to the shaft end of the first motor 2, wherein...

[0022] The main robotic arm 1 is equipped with a drive mechanism for driving the first motor 2 to rotate. A tool 8 is provided below the tool mounting shaft 3. A mounting groove 9 is provided at the bottom end of the tool mounting shaft 3. Slots 10 are symmetrically provided on the inner walls of both sides of the mounting groove 9. A locking block 11 is fixedly connected to the outer side of the tool 8 corresponding to the slot 10. A rod insertion groove 12 is connected to the top of the inner side of the tool mounting shaft 3 corresponding to the mounting groove 9.

[0023] The top of the tool 8 has a slot 13, the top of the inner side of the insertion slot 12 is fitted with a spring 14, the bottom of the spring 14 is fitted with an insertion rod 15, the tool mounting shaft 3 is symmetrically connected to the two sides of the insertion slot 12 with connecting grooves 16, the insertion rod 15 is fixedly connected to one side of the connecting groove 16, the outer side of the tool mounting shaft 3 is fitted with an annular sleeve 18, and the end of the connecting rod 17 away from the insertion rod 15 is fixedly connected to the inner wall of the annular sleeve 18.

[0024] When the tool 8 needs to be replaced, the drive mechanism drives the first motor 2 and the tool mounting shaft 3 to rotate as a whole, so that the tool mounting shaft 3 faces the outside of the machine tool, making it easier for the operator to operate. Then, the ring sleeve 18 and the connecting rod 17 drive the insertion rod 15 to overcome the elastic force of the spring 14 and move it out of the slot 13, so that the tool 8 can drive the locking block 11 to drive the locking groove 10 to move out by rotation, so that the tool 8 can be moved out of the mounting groove 9, and the tool 8 to be installed can be taken out and inserted into the mounting groove 9. At the same time, the locking block 11 is driven to insert into the vertical groove of the locking groove 10, pushing... The insertion rod 15 retracts into the insertion rod groove 12 against the elastic force of the spring 14. Then, the tool 8 rotates and drives the locking block 11 to move into the transverse groove of the locking slot 10. At the same time, the insertion rod groove 12 and the slot 13 are aligned. The spring 14 pushes the insertion rod 15 into the slot 13, which can prevent the tool 8 from rotating and thus complete the fixed installation of the tool 8. Through this clamping and positioning device, the direction of the tool mounting shaft 3 can be adjusted, which is convenient for the operator. At the same time, through the disassembly and assembly structure of the tool 8, the tool 8 can be quickly disassembled and assembled, thereby effectively improving the replacement efficiency of the tool 8.

[0025] Please see Figures 1 to 3 The drive mechanism includes a rotating shaft 4. A first motor 2 is rotatably connected to the main robotic arm 1 via the rotating shaft 4. A second motor 5 is installed on the side of the main robotic arm 1 away from the first motor 2. A worm gear 6 is installed at the end of the rotating shaft 4. A worm 7 is installed on the shaft end of the second motor 5 corresponding to the worm gear 6. The tooth pitch of the worm gear 6 and the worm 7 are equal, and the worm gear 6 and the worm 7 mesh. When the second motor 5 is working, it drives the worm 7 to rotate. The worm 7 drives the worm gear 6 to rotate through meshing, so that the worm gear 6 drives the first motor 2 and the tool mounting shaft 3 to rotate as a whole via the rotating shaft 4. This facilitates the adjustment of the mounting orientation of the tool mounting shaft 3. At the same time, through the unidirectional transmission structure formed by the worm gear 6 and the worm 7, the overall rotation of the first motor 2 and the tool mounting shaft 3 can be automatically locked to prevent the first motor 2 and the tool mounting shaft 3 from rotating automatically under force.

[0026] Please see Figures 1 to 3The slot 10 is L-shaped, and the horizontal groove size of the slot 10 matches the external size of the block 11. The insert rod 15 is a rectangular column, and the external size of the insert rod 15 matches the internal size of the slot 13. When the insert rod 15 is inserted into the slot 13, the rectangular insert rod 15 and the slot 13 can prevent the end of the tool 8 from rotating in the mounting groove 9, thereby preventing the block 11 from automatically rotating and moving out of the slot 10.

[0027] Working Principle: This machining center tool clamping and positioning device, when tool 8 needs to be replaced, drives the first motor 2 and tool mounting shaft 3 to rotate as a whole through the drive mechanism, so that the tool mounting shaft 3 faces the outside of the machine tool, making it convenient for the operator to operate. Then, through the annular sleeve 18 and connecting rod 17, the insert rod 15 is driven to move out of the slot 13 against the elastic force of the spring 14, so that tool 8 can drive the locking block 11 to move out of the slot 10 by rotation, so that tool 8 can move out of the mounting slot 9, remove the tool 8 to be installed, and insert tool 8 into the mounting slot 9, while driving the locking block 11 to insert into the vertical slot of the slot 10, pushing the insert rod 15 to retract into the insert rod slot 12 against the elastic force of the spring 14. Then, tool 8 rotates to move the locking block 11 into the horizontal slot of the slot 10, and at the same time, the insert rod slot 12 and the slot 13 are aligned. Spring 14 pushes the insert rod 15 into the slot 13, thus preventing the tool 8 from rotating and enabling the tool 8 to be fixedly installed. This clamping and positioning device can adjust the direction of the tool mounting shaft 3, making it convenient for operators to operate. At the same time, the tool 8 can be quickly disassembled and assembled through the disassembly and assembly structure, thereby effectively improving the tool 8 replacement efficiency. When the second motor 5 is working, it drives the worm 7 to rotate. The worm 7 drives the worm wheel 6 to rotate through meshing, so that the worm wheel 6 drives the first motor 2 and the tool mounting shaft 3 to rotate as a whole through the rotating shaft 4, which facilitates the adjustment of the installation orientation of the tool mounting shaft 3. At the same time, the unidirectional transmission structure formed by the worm wheel 6 and the worm 7 can automatically lock the overall rotation of the first motor 2 and the tool mounting shaft 3, preventing the first motor 2 and the tool mounting shaft 3 from rotating automatically under force.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tool clamping and positioning device for a machining center, comprising a main robotic arm (1), characterized in that: The main robotic arm (1) is rotatably connected to a first motor (2) near its bottom side, and a tool mounting shaft (3) is rotatably connected to the shaft end of the first motor (2). The main robotic arm (1) is equipped with a drive mechanism for driving the first motor (2) to rotate. A tool (8) is provided below the tool mounting shaft (3). A mounting groove (9) is provided at the bottom end of the tool mounting shaft (3). A slot (10) is symmetrically provided on the inner walls of both sides of the mounting groove (9). A locking block (11) is fixedly connected to the outer side of the tool (8) corresponding to the slot (10). A rod insertion groove (12) is connected to the top of the inner side of the tool mounting shaft (3) corresponding to the mounting groove (9). The top of the cutting tool (8) is provided with a slot (13), a spring (14) is installed on the top of the inner side of the insertion slot (12), and an insertion rod (15) is installed at the bottom of the spring (14). The cutting tool mounting shaft (3) is symmetrically connected to the two sides of the insertion slot (12) with a connecting groove (16). The insertion rod (15) is fixedly connected to one side of the connecting groove (16). The outer side of the cutting tool mounting shaft (3) is fitted with an annular sleeve (18), and the end of the connecting rod (17) away from the insertion rod (15) is fixedly connected to the inner wall of the annular sleeve (18).

2. The tool clamping and positioning device for a machining center according to claim 1, characterized in that: The drive mechanism includes a rotating shaft (4), the first motor (2) is rotatably connected to the main mechanical arm (1) through the rotating shaft (4), the main mechanical arm (1) is equipped with a second motor (5) on the side away from the first motor (2), a worm gear (6) is installed at the end of the rotating shaft (4), and a worm (7) is installed at the shaft end of the second motor (5) corresponding to the worm gear (6).

3. The tool clamping and positioning device for a machining center according to claim 2, characterized in that: The tooth pitch of the worm wheel (6) and the worm (7) is equal, and the worm wheel (6) and the worm (7) mesh with each other.

4. The tool clamping and positioning device for a machining center according to claim 1, characterized in that: The card slot (10) is L-shaped, and the horizontal groove size of the card slot (10) matches the external size of the card block (11).

5. The tool clamping and positioning device for a machining center according to claim 1, characterized in that: The insertion rod (15) is a rectangular column, and the external dimensions of the insertion rod (15) match the internal dimensions of the slot (13).

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