Heavy-load cutter holder module with self-locking mechanism

Abstract

The heavy-load cutter holder module with the self-locking mechanism comprises a cutter holder unit base, clamping jaws hinged to the two sides of the cutter holder unit base and a clamping jaw pressing block arranged on the cutter holder unit base in a sliding mode, the two sides of the clamping jaw pressing block make contact with the clamping jaws on the two sides of the cutter holder unit base respectively, and the clamping jaws are provided with C-shaped grooves corresponding to the clamping jaw pressing block. The C-shaped groove is embedded in the outer side of the clamping jaw pressing block, and a reset unit is arranged on the tool holder unit base. Thrust is continuously generated through the reset unit, so that the clamping jaw rotates around the hinged position, the cutter is clamped and fixed, compared with the mode that clamping is conducted through material elasticity of the clamping jaw, the mode that the reset unit provides the thrust can effectively guarantee the stability of the clamping state, and the clamping efficiency is improved. And the clamping force cannot be influenced by fatigue of the clamping jaws during long-time work. In addition, if the reset unit is fatigue and aged, only the reset unit can be replaced, and the maintenance and inspection cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machining centers, in particular to a heavy-load tool clamp module with a self-locking mechanism. Background Art

[0002] In CNC machining equipment, in order to meet the needs of different machining processes, an automatic tool magazine is generally configured. The tool is clamped and fixed by the tool clamp module in the tool magazine. When the machining equipment needs to replace the tool, the tool clamp module holding the corresponding tool is moved to the tool changing position through the tool magazine to facilitate the spindle to change the tool. The tool clamp module configured on the existing tool magazine generally relies on the elasticity of the clamping claw of the tool clamp module to clamp the tool, thereby clamping the tool and driving the tool to move in the tool magazine. When the tool is heavy and the load applied to the clamping claw of the tool clamp module is heavy, there is a risk of the tool falling off, especially after multiple times of taking and placing the tool on the tool clamp module, it is easy to cause fatigue of the clamping claw material, or when the equipment is working and the tool magazine drives the tool clamp module to move, the tool falls off the clamping claw due to vibration, which poses a great safety hazard. In addition, if the tool clamp module is aged or damaged, the tool clamp module needs to be replaced as a whole, and the maintenance cost is high.

[0003] If the tool clamp module is made of a material with higher strength, the force required to separate the jaws of the tool clamp module to take and place the tool is relatively large, resulting in great inconvenience in the process of taking and placing the tool.

[0004] Therefore, the prior art has defects and needs to be improved. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art and provide a heavy-load tool clamp module with a self-locking mechanism.

[0006] The technical solution of the utility model is as follows: a heavy-load tool clamp module with a self-locking mechanism is provided, comprising: a tool clamp unit seat, clamping jaws hinged on both sides of the tool clamp unit seat, and a clamping jaw pressure block slidably arranged on the tool clamp unit seat, the two sides of the clamping jaw pressure block are respectively in contact with the clamping jaws on both sides of the tool clamp unit seat, the clamping jaw corresponding to the clamping jaw pressure block is provided with a C-shaped groove, the C-shaped groove is nested in the outer side of the clamping jaw pressure block, a reset unit is provided on the tool clamp unit seat, and the reset unit is connected to the clamping jaw pressure block or the clamping jaw.

[0007] Furthermore, the reset unit adopts a compression spring, and the compression spring is arranged between the clamping jaw pressure block and the tool clamp unit seat.

[0008] Furthermore, the reset unit adopts a tension spring, and the tension spring is arranged between the clamping claws on both sides.

[0009] Furthermore, the reset unit adopts a torsion spring, and the torsion spring is arranged at the hinge position between the clamping jaw and the tool clamping unit seat. One end of the torsion spring is connected to the clamping jaw, and the other end is connected to the tool clamping unit seat.

[0010] Furthermore, limiting grooves are respectively arranged at both ends of the C-shaped groove on the clamping jaws on both sides of the clamping jaw pressing block, and the two ends of the C-shaped groove are respectively movably embedded in the corresponding limiting grooves.

[0011] Furthermore, an ejector screw is screwed into one end of the tool clamp unit seat away from the clamping jaw, and the end of the ejector screw contacts the end surface of the clamping jaw pressing block.

[0012] Furthermore, the tool clamp unit seat is provided with a movable groove corresponding to the clamping jaw pressing block, and the clamping jaw pressing block moves in the movable groove.

[0013] Furthermore, the movable slot upper cover is provided with a pressure cover.

[0014] Furthermore, guide grooves are provided on both sides of the tool clamp unit seat corresponding to the clamping jaws, and the clamping jaws move in the guide grooves.

[0015] By adopting the above scheme, the utility model continuously generates thrust through the reset unit, so that the clamping jaws rotate around the hinged position, thereby achieving the action of clamping and fixing the tool. Compared with clamping by the material elasticity of the clamping jaws themselves, the method of using the reset unit to provide thrust can effectively ensure the stability of the clamping state, and the clamping jaws will not affect the clamping force due to fatigue during long-term work. In addition, if the reset unit itself is fatigued and aged, only the reset unit can be replaced, and the maintenance cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is an explosion diagram of the utility model.

[0018] Figure 3 It is a schematic diagram of the assembly of the clamping block and the clamping jaw. DETAILED DESCRIPTION

[0019] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] See also Figures 1 to 3The utility model provides a heavy-load tool clamp module with a self-locking mechanism, comprising: a tool clamp unit seat 1, clamping jaws 2 hinged on both sides of the tool clamp unit seat 1, and a clamping jaw pressure block 3 slidably arranged on the tool clamp unit seat 1, the two sides of the clamping jaw pressure block 3 are respectively in contact with the clamping jaws 2 on both sides of the tool clamp unit seat 1, the clamping jaw 2 is provided with a C-shaped groove 21 corresponding to the clamping jaw pressure block 3, the C-shaped groove 21 is nested in the outer side of the clamping jaw pressure block 3, and a reset unit is provided on the tool clamp unit seat 1, and the reset unit is connected to the clamping jaw pressure block 3 or the clamping jaw 2.

[0021] Under normal conditions, the reset unit generates a thrust for the clamping block 3 or the clamping jaw 2, so that the clamping jaw 2 generates a clamping force, thereby clamping and fixing the tool 5. The front end of the clamping jaw 2 is an inclined surface inclined inward, and the clamping surface of the clamping jaw 2 is an arc-shaped surface. When the tool 5 is loaded, the outer side surface of the clamping part of the tool 5 contacts the inclined surface of the front end of the clamping jaw 2, and as the tool 5 moves toward the direction close to the tool clamping unit seat 1, the outer side surface of the tool 5 pushes the inclined surface, thereby pushing the clamping jaw 2 to rotate around the hinge position, thereby separating the clamping jaws 2 on both sides, making it easier for the tool 5 to enter the clamping position of the tool clamping module. After the tool 5 completely enters the clamping position of the clamping jaw 2, the clamping jaw 2 clamps and fixes the tool 5 under the push of the reset unit.

[0022] When the tool 5 needs to be taken out, the tool 5 is pulled outward, and the outer side surface of the clamping portion of the tool 5 moves along the arc surface of the clamping surface of the clamping jaw 2, and the clamping jaw 2 is opened outward to facilitate the removal of the tool 5. When the tool 5 is completely separated from the clamping surface of the clamping jaw 2, the thrust exerted by the tool 5 on the clamping jaw 2 is removed, and the clamping jaw 2 is reset under the push of the reset unit.

[0023] During the process of opening and closing the jaws 2, the C-shaped groove 21 of the jaws 2 cooperates with the tool clamping block 3 and generates mutual thrust, thereby ensuring that the jaws 2 on both sides can move symmetrically and synchronously, avoiding the stability of clamping and fixing the tool 5 due to differential movement of the jaws 2 on both sides.

[0024] The reset unit continuously generates thrust, so that the clamping jaw 2 rotates around the hinge position, thereby clamping and fixing the tool 5. Compared with clamping by the material elasticity of the clamping jaw 2 itself, the reset unit provides thrust, which can effectively ensure the stability of the clamping state, and the clamping jaw 2 will not affect the clamping force due to fatigue during long-term operation. In addition, if the reset unit itself is fatigued and aged, only the reset unit can be replaced, and the maintenance cost is low.

[0025] In some embodiments, the reset unit adopts a compression spring, which is arranged between the clamping jaw block 3 and the tool clamping unit seat 1. The compression spring is used to continuously generate thrust on the clamping jaw block 3, so that the side wall of the C-shaped groove 21 of the clamping jaw 2 is pushed by the clamping jaw block 3, so that the clamping jaw 2 rotates around the hinge position, thereby clamping and fixing the tool 5.

[0026] In some embodiments, the reset unit is a tension spring, which is arranged between the clamping jaws 3 on both sides. The tension spring continuously generates an inward pulling force on the clamping jaws 2, thereby clamping and fixing the tool 5.

[0027] In some embodiments, the reset unit is a torsion spring, which is arranged at the hinged position between the clamping jaw 2 and the tool clamping unit seat 1, with one end of the torsion spring connected to the clamping jaw 2 and the other end connected to the tool clamping unit seat 1. The torsion spring generates a torsional force, thereby driving the clamping jaw 2 to continuously clamp inward, thereby clamping and fixing the tool 5.

[0028] In the above three settings of the reset unit, compared with the other two, the thrust applied by the compression spring on the clamping jaw block 3 will act on the side wall of the C-shaped groove 21, continuously pushing the C-shaped groove 21 so that the end of the clamping jaw 2 in contact with the clamping jaw block 3 is expanded outward, and the clamping force applied to the tool 5 by the clamping surface of the clamping jaw 2 is increased through the lever principle, which can more effectively ensure the stability of the clamping state of the tool 5.

[0029] The two sides of the clamping jaw block 3 correspond to the two ends of the C-shaped groove 21 on the clamping jaw 2 and are respectively provided with limiting grooves 31, and the two ends of the C-shaped groove 21 are respectively movably embedded in the corresponding limiting grooves 31. When the clamping jaw block 3 and the clamping jaw 2 move relatively to the limit position, one end of the C-shaped groove 21 will be embedded in the limiting groove 31 of the clamping jaw block 3, so as to prevent the clamping jaw 2 from shaking and affecting the clamping effect of the tool 5, thereby improving the stability of clamping the tool 5.

[0030] An ejector screw 4 is screwed into the end of the tool clamp unit seat 1 away from the clamping jaw 2, and the end of the ejector screw 4 contacts the end surface of the clamping jaw pressing block 3. By rotating the ejector screw 4, the ejector screw 4 pushes the clamping jaw pressing block 3 to move forward, so that the angle between the clamping jaws 2 on both sides in the clamping state can be adjusted to meet the clamping requirements of tools of different specifications.

[0031] The tool clamp unit seat 1 is provided with a movable groove 11 corresponding to the clamping jaw block 3, and the clamping jaw block 3 moves in the movable groove 11. A pressure cover 12 is provided on the movable groove 11. The movable groove 11 is provided to facilitate the installation of the clamping jaw block 3, and the pressure cover 12 provides protection for the clamping jaw block 3 to prevent dust and impurities in the external environment from falling on the clamping jaw block 3 and affecting the movement of the clamping jaw block 3. In addition, by providing the pressure cover 12, the clamping jaw block 3 can be prevented from falling off and affecting the pushing effect on the clamping jaw 2.

[0032] The tool clamp unit seat 1 is provided with guide grooves 13 on both sides corresponding to the clamping jaws 2. The clamping jaws 2 move in the guide grooves 13, thereby providing upper and lower limit positions for the clamping jaws 2 to avoid shaking during the clamping of the tool 5.

[0033] In summary, the utility model continuously generates thrust through the reset unit, so that the clamping jaws rotate around the hinged position, thereby achieving the action of clamping and fixing the tool. Compared with clamping by the material elasticity of the clamping jaws themselves, the method of using the reset unit to provide thrust can effectively ensure the stability of the clamping state, and the clamping jaws will not affect the clamping force due to fatigue during long-term work. In addition, if the reset unit itself is fatigued and aged, only the reset unit can be replaced, and the maintenance cost is low.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heavy-duty toolholder module with a self-locking mechanism, characterized in that: include: A tool clamp unit seat, clamping jaws hinged on both sides of the tool clamp unit seat, and a clamping jaw pressure block slidably arranged on the tool clamp unit seat, the two sides of the clamping jaw pressure block are respectively in contact with the clamping jaws on both sides of the tool clamp unit seat, the clamping jaws are provided with C-shaped grooves corresponding to the clamping jaw pressure blocks, the C-shaped grooves are nested in the outer side of the clamping jaw pressure block, and a reset unit is provided on the tool clamp unit seat, and the reset unit is connected to the clamping jaw pressure block or the clamping jaw.

2. The heavy-duty tool holder module with a self-locking mechanism according to claim 1, characterized in that: The reset unit adopts a compression spring, and the compression spring is arranged between the clamping jaw pressing block and the tool clamp unit seat.

3. The heavy-duty tool holder module with a self-locking mechanism according to claim 1, characterized in that: The reset unit adopts a tension spring, and the tension spring is arranged between the clamping claws on both sides.

4. The heavy-duty tool holder module with a self-locking mechanism according to claim 1, characterized in that: The reset unit adopts a torsion spring, which is arranged at the hinge position between the clamping jaw and the tool clamping unit seat. One end of the torsion spring is connected to the clamping jaw, and the other end is connected to the tool clamping unit seat.

5. The heavy-duty tool holder module with a self-locking mechanism according to claim 1, characterized in that: Limiting grooves are respectively arranged on both sides of the clamping jaw pressing block corresponding to the two ends of the C-shaped groove on the clamping jaw, and the two ends of the C-shaped groove are respectively movably embedded in the corresponding limiting grooves.

6. The heavy-duty tool holder module with a self-locking mechanism according to claim 1, characterized in that: An ejector screw is screwed into one end of the tool clamp unit seat away from the clamping jaw, and the end of the ejector screw contacts the end surface of the clamping jaw pressing block.

7. The heavy-duty tool holder module with a self-locking mechanism according to claim 1, characterized in that: The tool clamp unit seat is provided with a movable groove corresponding to the clamping jaw pressing block, and the clamping jaw pressing block moves in the movable groove.

8. The heavy-duty tool holder module with a self-locking mechanism according to claim 7, characterized in that: The movable slot upper cover is provided with a pressure cover.

9. The heavy-duty tool holder module with a self-locking mechanism according to claim 1, characterized in that: The tool clamp unit seat has guide grooves on both sides corresponding to the clamping jaws, and the clamping jaws move in the guide grooves.

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