Tool claw for chain type tool magazine
Through the knife claw structure used in chain tool magazine, the combination of lock blocks and reset clamps is used to solve the problem that the tool is easily thrown on the knife claws, and a firmer clamping and faster tool change process is achieved.
Patent Information
- Application Number
- CN202422494140.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-10-15
AI Technical Summary
In the prior art, the tool is easily thrown out on the knife claw due to inertia force, resulting in the problem of knife dropping.
The knife claw structure used in a chain tool magazine is adopted, including two symmetrical movable claws. Through the cooperation of the lock block and the reset clamp, the movable claw clamps the handle with the force of the spring, reducing the risk of shaking and throwing.
It improves the firmness of the tool connection on the claws, reduces the cutter loss, reduces the wear of the tool holder, and increases the speed of tool change.
Smart Images
Figure CN223235759U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of a chain tool magazine for machine tools, and in particular to a tool claw for a chain tool magazine. Background Art
[0002] The tool claw is an important part of the tool magazine of the machine tool. There are multiple tools placed in the tool magazine of the machine tool. The tool claw is used to clamp the tool handle, and then the tool claw drives the tool to move in the tool magazine, so that the tool can be moved to the tool magazine, which is convenient for tool management. At the same time, the tool can be moved to the tool changing position, so that the machine tool can automatically complete the tool replacement, thereby improving the automation level of the machine tool.
[0003] The related technology discloses a knife claw structure for a tool magazine of a CNC machine, including a knife claw installed on a tool disc, the knife claw including a fixed part connected to the tool disc and a clamping part for clamping the tool, the clamping part including two elastic front forks, the inner walls of the two elastic front forks form a large semicircle, and the radius of the semicircle is adapted to the tool, the inner walls of the two elastic front forks are circumferentially provided with a raised platform for supporting the tool, and the ends of the two elastic front forks are provided with a protrusion protruding inward, the protrusion can increase the pre-pressure of the knife claw on the tool, thereby clamping the tool more firmly.
[0004] Therefore, the knife claw is able to clamp the tool through two elastic front forks. When the tool is taken out from the knife claw, the two elastic front forks are separated by squeezing force. When the knife claw moves in the tool magazine, the inertia force applied to the tool can easily cause it to be thrown out from between the two elastic front forks, resulting in the problem of the tool falling. Utility Model Content
[0005] In order to make the tool more firmly connected to the tool claw and reduce the situation of the tool being thrown out, the present application provides a tool claw for a chain tool magazine.
[0006] The present application provides a knife claw for a chain tool magazine, which adopts the following technical solution:
[0007] The cam is secured to the front of the tool holder and is adapted to engage the tool when the tool is engaged with the chain unit, wherein the cam is secured to the front of the tool holder and is adapted to engage the tool when the tool is engaged with the chain unit.
[0008] Preferably, a convex strip is provided on the arc-shaped inner wall of the movable claw, and the convex strip is used to be connected to the annular groove of the knife handle. A clamping block is provided on the inner wall of the movable claw, and the clamping block is used to be connected to the clamping groove of the knife handle.
[0009] Preferably, inclined surfaces are provided on both sides of the locking block, and the distance between the two inclined surfaces at a side close to the reset clamping block is greater than the distance between the two inclined surfaces at a side away from the reset clamping block.
[0010] Preferably, a positioning portion is provided on the movable claw, and a positioning piece is fixedly provided on the chain unit. When the positioning piece abuts against the positioning portion, the maximum distance between the two movable claws is equal to the diameter of the shank.
[0011] Preferably, the chain unit is provided with a clamping plate, which is detachably connected to the chain unit, and the clamping plate cooperates with the chain unit to install the movable claw, the locking block and the reset clamping block.
[0012] Preferably, two support blocks are provided on the side of the splint facing the chain unit, a slideway for slidingly connecting a locking block is formed between the two support blocks, and a fixed column is provided on the side of the splint facing the chain unit, and the movable claw is rotatably connected to the fixed column.
[0013] Preferably, a connecting rod is fixedly provided on one end of the reset clamping block facing the locking block, and the connecting rod is slidably connected in the reset clamping block.
[0014] Preferably, both the reset clamping block and the locking block are provided with accommodating holes, and both ends of the spring are respectively located in the accommodating holes of the reset clamping block and the locking block.
[0015] In summary, this application includes at least one of the following beneficial technical effects:
[0016] 1. The knife handle is used to install the knife. When the knife handle is placed on the knife claw, the knife handle first enters between the two movable claws. When the movable claw first abuts against the reset clamping block, the reset clamping block pushes the locking block to move toward the clamping part of the movable claw, so that the locking block abuts the clamping part and the arc-shaped positions of the two movable claws are close to each other, thereby clamping the knife handle. Since the reset clamping block remains in abutment with the knife handle, the reset clamping block can maintain abutment force on the spring, and then the locking block applies force to the movable claw under the action of the spring, so that the knife handle is firmly connected to the two movable claws, reducing the possibility of the knife being thrown out;
[0017] 2. Since the reset clamp remains in contact with the tool handle and, under the action of the spring, can reduce the shaking of the tool handle on the two movable claws, it can reduce the wear or damage of the tool handle caused by shaking. At the same time, when removing the tool handle, the reset clamp can provide thrust for the tool handle to move out of the two movable claws, thereby increasing the removal speed of the tool handle;
[0018] 3. The splint is detachably connected to the chain unit so that the movable claw, the locking block and the reset clamping block are all located between the splint and the chain unit, thereby facilitating the installation of the locking block, the movable claw and the reset clamping block on the chain unit.
[0019] 4. The connecting rod is used to connect the locking block and the reset clamp. The reset clamp is restricted by the connecting rod and can maintain its connection with the locking block to prevent the reset clamp from being ejected and falling off due to the force of the spring. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0021] Figure 1 This is a schematic structural diagram of the knife handle in an embodiment of the present application;
[0022] Figure 2 This is a schematic diagram of a knife claw used in a chain tool magazine according to an embodiment of the present application;
[0023] Figure 3 This is a schematic diagram of the overall structure of a knife claw for a chain tool magazine according to an embodiment of the present application;
[0024] Figure 4 This is a schematic diagram of the position of the locking block in an embodiment of the present application;
[0025] Figure 5 This is a schematic structural diagram of a splint in an embodiment of the present application;
[0026] Figure 6It is a schematic diagram of the connection structure between the locking block and the reset clamping block in an embodiment of the present application.
[0027] Explanation of the accompanying reference numerals: 1. Tool handle; 11. Main body; 12. Clamping ring; 13. Ring groove; 14. Clamping slot; 2. Chain unit; 21. Mounting plane; 3. Movable claw; 31. Protrusion; 32. Raised strip; 33. Block; 34. Mounting hole; 35. Positioning portion; 36. Opening portion; 37. Clamping portion; 4. Locking block; 41. Inclined surface; 5. Reset clamp; 6. Spring; 61. Accommodating hole; 7. Positioning member; 8. Clamping plate; 81. Support block; 82. Slide; 83. Fixed column; 9. Connecting rod. DETAILED DESCRIPTION
[0028] The present application will be further described in detail below through the accompanying drawings and examples, through which the features and advantages of the present application will become more clear and distinct.
[0029] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by technicians in the technical field to which this application belongs; the terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions.
[0030] The phrase "embodiment" mentioned in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it refer to independent or alternative embodiments that are mutually exclusive with other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.
[0031] refer to Figure 1 , tool handle 1, the tool handle 1 is a connecting part between the machine tool spindle and the tool, the tool handle 1 in this embodiment includes a body 11, a clamping ring 12 is formed on the peripheral wall of the body 11, a ring groove 13 is provided in the middle of the peripheral wall of the clamping ring 12, and a clamping groove 14 is provided on the side wall of the clamping ring 12 along the axial direction of the body 11, the clamping groove 14 is U-shaped as a whole and the U-shaped opening of the clamping groove 14 is along the radial direction of the body 11, and two clamping grooves 14 are evenly arranged at intervals in the circumferential direction of the body 11.
[0032] The embodiment of the present application discloses a knife claw for a chain tool magazine, which is used to clamp the tool handle 1 to facilitate taking the tool out of the tool magazine or putting it back into the tool magazine. Figure 2The present invention comprises a chain unit 2 having at least one mounting surface 21. Two movable claws 3 are disposed on the mounting surface 21. The two movable claws 3 are rotatably connected to the chain unit 2. One end of the movable claw 3 extends from one side of the chain unit 2, and the side where the movable claw 3 extends from the chain unit 2 is the front side of the chain unit 2. The portions of the two movable claws 3 extending from the chain unit 2 are arranged in an arc shape. The two movable claws 3 are symmetrically arranged and are used to clamp the knife handle 1. The line connecting the positions where the two movable claws 3 clamp the knife handle 1 passes through the center of the knife handle 1, allowing the movable claws 3 to stably clamp the knife handle 1. The area enclosed by the two movable claws 3 exceeds half of the circumference of the knife handle 1, and the ends of the movable claws 3 are formed with protrusions 31 that protrude inwardly from the arc formed by the movable claws 3. When the knife handle 1 moves into the two movable claws 3, the two movable claws 3 first separate, and then the knife handle 1 enters between the two movable knives. The two movable knives then approach each other and are clamped at the clamping ring 12 of the knife handle 1.
[0033] refer to Figure 2 and Figure 3 The curved inner wall of the movable claw 3 is provided with a ridge 32. The ridge 32 is arranged along the curved inner wall of the movable claw 3. The width of the ridge 32 is the same as the width of the annular groove 13 on the knife handle 1. When the movable claw 3 is clamped at the clamping ring 12, the ridge 32 enters the annular groove 13, restricting the movement of the knife handle 1 along its axial direction. At the same time, a clamping block 33 is provided on the inner wall of the movable claw 3. The clamping block 33 is located above or below the ridge 32. The clamping block 33 protrudes toward the inner side of the curved shape of the movable claw 3. When the movable claw 3 is clamped at the clamping ring 12, the clamping block 33 enters the clamping groove 14 through the U-shaped opening of the clamping groove 14. The engagement of the clamping block 33 with the clamping groove 14 restricts the rotation of the knife handle 1 about its centerline.
[0034] refer to Figure 4 A mounting hole 34 is provided in the middle of the movable claw 3. A positioning portion 35 is provided at the end of the movable claw 3 away from the protrusion 31. An opening portion 36 and a clamping portion 37 are also provided on the movable claw 3. The opening portion 36 and the clamping portion 37 are both located on the opposite side walls of the two movable claws 3. A locking block 4 is provided between the two movable claws 3. The locking block 4 abuts against the opening portion 36 or the clamping portion 37 to separate or bring the end of the movable claw 3 provided with the protrusion 31 apart. At the same time, a reset clamp 5 is connected to the locking block 4. The reset clamp 5 and the movable claw 3 are in the same plane. The reset clamp 5 is slidably connected to the locking block 4, and the relative sliding direction of the reset clamp 5 and the lock block 4 is the same as the front direction of the chain unit 2. A spring 6 is provided between the lock block 4 and the reset clamp 5. The length direction of the spring 6 is parallel to the sliding direction of the reset clamp 5.
[0035] When the knife handle 1 is placed between the two movable claws 3, the side wall of the knife handle 1 first abuts against the reset clamping block 5 away from the locking block 4, and under the extrusion force of the knife handle 1, the spring 6 pushes the locking block 4 to move to the position abutting against the clamping part 37. When the locking block 4 abuts against the clamping part 37, the center line of the knife handle 1 has entered the area surrounded by the two movable claws 3. At this time, the knife handle 1 continues to squeeze the reset clamping block 5, causing the reset clamping block 5 to further squeeze the spring 6. The force of the spring 6 is loaded on the locking block 4, thereby increasing the abutting force of the locking block 4 on the clamping part 37, thereby making the two movable claws 3 clamp the knife handle 1 more firmly. In addition, the elastic force of the spring 6 on the reset clamping block 5 causes the reset clamping block 5 to abut against the side wall of the knife handle 1, so that the knife handle 1 abuts against the movable claw 3 under the force of the reset clamping block 5, reducing the shaking between the knife handle 1 and the movable claw 3, thereby reducing the wear of the knife handle 1 caused by shaking during movement. At the same time, since the tool handle 1 is pushed by the reset clamp 5, when the two movable claws 3 release the tool handle 1, the reset clamp 5 can quickly push the tool handle 1 out of the movable claws 3, thereby increasing the speed of tool changing.
[0036] refer to Figure 4 When the two movable jaws 3 are in the state of clamping the tool handle 1, the side of the reset clamping block 5 close to the locking block 4 does not exceed the position of the opening portion 36. The end of the locking block 4 close to the reset clamping block 5 is used to abut the opening portion 36. Inclined surfaces 41 are provided on both sides of the locking block 4. The inclined surfaces 41 are used to abut the clamping portion 37. The distance between the two inclined surfaces 41 close to the reset clamping block 5 is greater than the distance between the two inclined surfaces 41 away from the reset clamping block 5. When the locking block 4 moves toward the clamping portion 37, the two inclined surfaces 41 gradually clamp the two movable jaws 3 relative to each other. A positioning member 7 is provided on the chain unit 2, and the positioning member 7 cooperates with the positioning portion 35 on the movable claw 3. When the arc-shaped ends of the two movable claws 3 approach each other and are clamped on the knife handle 1, the positioning member 7 abuts against the positioning portion 35. At this time, even if the knife handle 1 is not placed between the two movable claws 3, the maximum distance between the two clamping portions 37 can still clamp the locking block 4, so as to prevent the locking block 4 from falling out during the movement of the clamping jaws when the movable claws 3 do not clamp the knife handle 1.
[0037] When in use, the locking block 4 is away from one end of the reset clamping block 5 through a driving member, which can be a cylinder. The driving member moves the locking block 4 in the direction of the opening portion 36, so that the locking block 4 squeezes the spring 6 and abuts the opening portion 36, thereby separating the arc-shaped ends of the two movable claws 3 from each other, so that the knife handle 1 can be moved out from between the two movable claws 3. When the knife handle 1 needs to be placed between the two movable claws 3, even if the locking block 4 moves to abut against the clamping portion 37 due to inertia, the knife handle 1 can still be used to squeeze the two movable claws 3 so that the movable claws 3 move the locking block 4 in the direction of opening the movable claws 3 through the extrusion inclined surface 41. At this time, the reset clamping block 5 is not squeezed by the knife handle 1.
[0038] refer to Figure 4 and Figure 5 A clamping plate 8 is provided parallel to the mounting plane 21. The clamping plate 8 is fixed to the chain unit 2, so that two movable claws 3, a locking block 4, and a reset clamping block 5 are placed between the clamping plate and the chain unit 2. Two support blocks 81 are provided on the end of the clamping plate facing the chain unit 2. The height of the two support blocks 81 is equal to that of the movable claw 3. A slideway 82 is formed between the two support blocks 81. One end of the locking block 4 is slidably connected within the slideway 82, so that the locking block 4 can be restricted to movement along the length of the slideway 82 under the action of the clamping plate 8 and the chain unit 2. At the same time, the positioning member 7 can be a bolt. The positioning member 7 passes through the clamping plate 8 and is threadedly connected to the chain unit 2, so that the positioning member 7 can fix the clamping plate 8 to the chain unit 2. A fixing column 83 is also provided on the surface of the clamping plate 8 facing the chain unit 2. The fixing column 83 is used to be inserted into the mounting hole 34 of the movable claw 3. A bearing can be provided on the fixing column 83 so that the movable claw 3 can be rotatably connected to the fixing column 83 on the chain unit 2.
[0039] refer to Figure 6 A connecting rod 9 is fixedly mounted on the end of the reset clamp 5 facing the locking block 4. The connecting rod 9 is slidably connected to the reset clamp 5, connecting the reset clamp 5 to the locking block 4 through the connecting rod 9 to prevent the locking block 4 from falling off. At the same time, a receiving hole 61 is formed on both the reset clamp 5 and the locking block 4. The two ends of the spring 6 are respectively located in the receiving holes 61 of the reset clamp 5 and the locking block 4, so that the spring 6 can be located in the receiving holes 61 when it contracts.
[0040] The usage process of this embodiment is as follows: when the knife handle 1 is placed between the two movable claws 3, the knife handle 1 first enters between the two movable claws 3, so that the knife handle 1 pushes the reset clamp 5, and the reset clamp 5 pushes the locking block 4 to move toward the clamping part 37 of the movable claw 3, so that the two movable claws 3 clamp the knife handle 1; when the knife handle 1 is taken out from between the two movable claws 3, the driving member is used to push the locking block 4 to squeeze the spring 6 while abutting against the opening part 36, so that the movable claw 3 opens, and at the same time the reset clamp 5 pushes the knife handle 1 to quickly move out of the two movable claws 3.
[0041] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A knife claw for a chain tool magazine, comprising a chain unit (2), characterized in that: The chain unit (2) is provided with two symmetrical movable claws (3), the two movable claws (3) extending from the front side of the chain unit (2) and arranged in an arc shape, the movable claws (3) located on the front side of the chain unit (2) are used to clamp the knife handle (1), the movable claws (3) are rotatably connected to the chain unit (2), the two movable claws (3) are provided with an opening portion (36) and a clamping portion (37) on opposite sides, and the chain unit (2) is slidably connected to the locking block (4), and when the locking block (4) slides on the chain unit (2) toward the opening portion (36), it contacts the opening portion (36) and drives the arc-shaped positions of the two movable claws (3) to collide with each other. When the locking block (4) slides toward the clamping portion (37) on the chain unit (2), it contacts the clamping portion (37) and drives the arc-shaped positions of the two movable claws (3) to approach each other. A reset clamp (5) is provided on the side of the locking block (4) close to the knife handle (1). The reset clamp (5) is slidably connected to the locking block (4) and is used to contact the side wall of the knife handle (1). A spring (6) is provided between the reset clamp (5) and the locking block (4); when the reset clamp (5) contacts the side wall of the knife handle (1), the reset clamp (5) squeezes the spring (6) and drives the locking block (4) to contact the clamping portion (37).
2. The knife claw for a chain tool magazine according to claim 1, characterized in that: A convex strip (32) is provided on the arc-shaped inner wall of the movable claw (3), and the convex strip (32) is used to be connected to the annular groove (13) of the knife handle (1). A clamping block (33) is provided on the inner wall of the movable claw (3), and the clamping block (33) is used to be connected to the clamping groove (14) of the knife handle (1).
3. The knife claw for a chain tool magazine according to claim 1, characterized in that: Inclined surfaces (41) are provided on both sides of the locking block (4), and the distance between the two inclined surfaces (41) on the side close to the reset clamping block (5) is greater than the distance between the two inclined surfaces (41) on the side away from the reset clamping block (5).
4. The knife claw for a chain tool magazine according to claim 1, characterized in that: The movable claw (3) is provided with a positioning portion (35), and the chain unit (2) is fixedly provided with a positioning piece (7). When the positioning piece (7) abuts against the positioning portion (35), the maximum distance between the two movable claws (3) is equal to the diameter of the shank (1).
5. The knife claw for a chain tool magazine according to claim 4, characterized in that: The chain unit (2) is provided with a clamping plate (8), which is detachably connected to the chain unit (2); the clamping plate (8) cooperates with the chain unit (2) to install a movable claw (3), a locking block (4) and a reset clamping block (5).
6. The knife claw for a chain tool magazine according to claim 5, characterized in that: Two supporting blocks (81) are provided on one side of the splint (8) facing the chain unit (2), a slideway (82) for slidingly connecting the locking block (4) is formed between the two supporting blocks (81), a fixing column (83) is provided on one side of the splint (8) facing the chain unit (2), and the movable claw (3) is rotatably connected to the fixing column (83).
7. The knife claw for a chain tool magazine according to claim 1, characterized in that: A connecting rod (9) is fixedly provided on one end of the reset clamp (5) facing the locking block (4), and the connecting rod (9) is slidably connected in the reset clamp (5).
8. The knife claw for a chain tool magazine according to claim 7, characterized in that: The reset clamping block (5) and the locking block (4) are both provided with a receiving hole (61), and the two ends of the spring (6) are respectively located in the receiving holes (61) of the reset clamping block (5) and the locking block (4).