Clamp capable of rapidly replacing lathe clamping jaw

Abstract

The utility model relates to the technical field of mechanical lathes, in particular to a clamp capable of quickly replacing lathe clamping jaws, which comprises a clamping jaw disc, a plurality of clamping grooves are formed in the circumference of the top surface of the clamping jaw disc, a plurality of limiting grooves are symmetrically formed in two opposite sides in the clamping grooves, clamping jaw bodies are inserted into the clamping grooves, and cavities are formed in the clamping jaw bodies; the limiting assemblies are arranged on the two sides of the clamping jaw body, and the limiting assemblies are used for fixing the clamping jaw body on the clamping jaw disc; and the separating assembly is arranged at the bottom of the clamping jaw body, and the separating assembly is used for releasing fixation of the clamping jaw body and the clamping jaw disc. Compared with the prior art, through the mutual cooperation effect of the limiting assembly and the separating assembly, it is ensured that when the clamping jaw is replaced, the clamping jaw can be replaced quickly and simply without any auxiliary tool except for the hand pulling force.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical lathes, in particular to a fixture for quickly replacing lathe jaws. Background Technique

[0002] In a mechanical lathe, a jaw is a part for clamping and holding a workpiece, or a lathe accessory for clamping and positioning the workpiece. Most of them are evenly distributed along the circumference, so that several jaws move towards or away from the center simultaneously to complete the work.

[0003] In the prior art, a Chinese patent document with the publication number CN215966381U, a lathe jaw that can be quickly replaced, proposes to quickly replace the soft jaws of a lathe in a bolt connection manner, which has interchangeability. The soft jaw body with a counterbore threaded hole uses bolts and threaded holes to connect the hard jaw body and the soft jaw body to play a pressing role. Allen bolts are used, which can sink the bolts below the surface of the soft jaw body to avoid interference with the workpiece when cutting the workpiece. However, the defect is that the soft jaw has poor wear resistance, and it is still installed and replaced by the shape of the bolt. When installing with bolts, it is usually necessary to manually screw the bolts into the preset threaded holes. This process requires tools such as wrenches and screwdrivers, and precise alignment of the threads is required to avoid damage or difficult installation. For this installation method, there are defects of many steps and long time consumption. Content of the Utility Model

[0004] In view of this, the purpose of the present utility model is to propose a fixture for quickly replacing lathe jaws to solve the problem of low replacement efficiency of lathe jaws in the prior art.

[0005] Based on the above purpose, the present utility model provides a fixture for quickly replacing lathe jaws, including a jaw plate. A plurality of card slots are arranged in a circumferential arrangement on the top surface of the jaw plate. A plurality of limiting slots are symmetrically arranged on opposite sides inside the card slots. A jaw body is inserted into each of the card slots. A cavity is formed inside the jaw body.

[0006] A limiting component is arranged on both sides of the jaw body, and the limiting component is used to fix the jaw body on the jaw plate.

[0007] A separation component is arranged at the bottom of the jaw body, and the separation component is used to release the fixation between the jaw body and the jaw plate.

[0008] Preferably, the card slot is formed in an inverted T shape, and the jaw body is arranged in an inverted T shape adapted to the card slot.

[0009] Preferably, the limiting component includes a plurality of fixed slide rails fixedly installed inside the cavity. A plurality of through holes are symmetrically formed on both sides of the middle of the jaw body. A limiting block is slidably installed inside each of the plurality of through holes. A sliding groove is formed on the top surface of each limiting block, and the sliding groove is slidably connected to the bottom of the fixed slide rail. The central points of the plurality of limiting grooves are on a straight line, and the heights of the plurality of limiting grooves gradually decrease from the inside to the outside. The heights of the plurality of limiting blocks are respectively adapted to the plurality of limiting grooves.

[0010] Preferably, the opposite surface of the limiting block and the clamping groove is arranged in an arc shape.

[0011] Preferably, the separating component includes a trigger plate slidably installed at the bottom of the jaw body. A sliding groove is formed at the bottom of the jaw body, and the trigger plate is slidably installed inside the sliding groove. A positioning rod is fixedly installed in the middle of the top end of the trigger plate. Rotating sleeve rods are fixedly connected to both sides of the end of the positioning rod away from the trigger plate. A plurality of linkage plates are equidistantly rotatably connected to the outer walls of the two rotating sleeve rods. The other ends of the plurality of linkage plates are rotatably installed with rotating shafts, and one side of the rotating shaft is rotatably connected to one side of the limiting block.

[0012] Preferably, a plurality of return springs are arranged at the bottom of the trigger plate, and the bottom ends of the return springs are fixedly connected to the bottom of the jaw body.

[0013] The beneficial effects of the present utility model:

[0014] 1. For this kind of fixture for quickly replacing the lathe chuck, by setting the limiting component, when the jaw body needs to be assembled with the chuck plate in a limited way, the jaw body is pushed from the notch of the clamping groove into the clamping groove. Under the action of an external force, the limiting block slides along the fixed slide rail into the corresponding limiting groove one by one, so as to limit and fix the jaw body and the chuck plate. The whole process does not require any auxiliary tools and simply and quickly completes the limited installation of the lathe chuck.

[0015] 2. For this kind of fixture for quickly replacing the lathe chuck, by setting the separating component, when the jaw body needs to be replaced, hold the upper end of the jaw body and pull it upward forcefully. The trigger plate compresses the return spring at its bottom under the upward pulling force to complete its downward movement, thereby driving the linkage plate to rotate, and then driving the limiting block to slide towards the center on the fixed slide rail through the rotating shaft until the limiting block completely slides out of the limiting groove, and then the jaw body is vertically pulled out of the clamping groove along the outer wall of the chuck plate to complete the separation operation. The whole process does not require any auxiliary tools and simply and quickly completes the replacement of the lathe chuck. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 Structural schematic diagram of the present utility model after assembly;

[0018] Figure 2 Structural disassembly schematic diagram of the present utility model;

[0019] Figure 3 Structural schematic diagram of the jaw body in the present utility model;

[0020] Figure 4 Structural schematic diagram of the outer shell of the jaw body in the present utility model;

[0021] Figure 5 Structural schematic diagram of the cavity of the jaw body in the present utility model;

[0022] Figure 6 Structural disassembly schematic diagram of the cavity of the jaw body in the present utility model.

[0023] The labels in the figure are:

[0024] 1. Claw disc; 2. Card slot; 3. Limit slot; 4. Claw body; 5. Cavity; 6. Fixed slide rail; 7. Through hole; 8. Limit block; 9. Slide groove; 10. Sliding groove; 11. Trigger plate; 12. Return spring; 13. Positioning rod; 14. Rotating sleeve rod; 15. Linking plate; 16. Rotating shaft. Detailed implementation manners

[0025] To make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the following further details the present utility model in combination with specific embodiments.

[0026] It should be noted that unless otherwise defined, the technical terms or scientific terms used in this utility model should have the ordinary meaning understood by those with general skills in the field to which this utility model belongs. The "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0027] As Figures 1 to 6 shown, the fixture for quickly replacing the lathe chuck includes a chuck plate 1. A plurality of clamping grooves 2 are arranged in a circumferential arrangement on the top surface of the chuck plate 1. A plurality of limiting grooves 3 are symmetrically arranged on the opposite sides inside the clamping grooves 2. A chuck body 4 is inserted into each of the clamping grooves 2. A cavity 5 is formed inside the chuck body 4; a limiting component, the limiting component is arranged on both sides of the chuck body 4, and the limiting component is used to fix the chuck body 4 on the chuck plate 1; a separating component, the separating component is arranged at the bottom of the chuck body 4, and the separating component is used to release the fixation between the chuck body 4 and the chuck plate 1. The clamping grooves 2 are arranged in an inverted T shape, and the chuck body 4 is arranged in an inverted T shape adapted to the clamping grooves 2;

[0028] When installing the chuck body 4, first align the lower end of the inverted T shape of the chuck body 4 with the entrance of the clamping groove 2, and note that the direction should match the design of the clamping groove 2. Push the chuck body 4 to slide it along the direction of the clamping groove 2. As the chuck body 4 goes deeper, its inverted T-shaped structure will automatically match the corresponding part of the clamping groove 2, initially realizing clamping. At the same time when the chuck body 4 is completely inserted into the clamping groove 2, the built-in limiting component will automatically limit the chuck body 4 to ensure that it is firmly fixed in the clamping groove 2, achieving quick locking without additional operations. When the chuck needs to be replaced, simply lift the chuck body 4. This action will trigger the separating component to disengage the limiting component from the contact with the chuck body 4, thereby releasing its limiting fixation. After the limit is released, the chuck body 4 can be easily pulled out from the clamping groove 2 to complete the disassembly process, greatly simplifying the chuck replacement operation, not only improving work efficiency but also reducing the possibility of operation errors.

[0029] As Figure 3 、 Figure 4 、 Figure 6As shown in the figure, the limiting component includes a number of fixed sliding rails 6 fixedly installed inside the cavity 5. On both sides of the middle of the claw body 4, a number of through holes 7 are symmetrically opened. Inside each of the through holes 7, a limiting block 8 is slidably installed. On the top surface of each limiting block 8, a sliding groove 9 is opened. The sliding groove 9 is slidably connected to the bottom of the fixed sliding rail 6. The central points of a number of limiting grooves 3 are on a straight line, and the heights of the number of limiting grooves 3 decrease successively from the inside to the outside. The heights of the number of limiting blocks 8 respectively match the number of limiting grooves 3. The surface of the limiting block 8 opposite to the clamping groove 2 is arranged in an arc shape;

[0030] When assembling the claw, the claw body 4 is pushed into the claw disc 1 from the notch of the clamping groove 2. Under the resistance of the opposite two wall surfaces where the limiting groove 3 is located, the limiting blocks 8 on both sides slide towards the middle along the fixed sliding rail 6. Continuously push the claw body 4 into the clamping groove 2 until each limiting block 8 slides into the corresponding limiting groove 3. The surface of the limiting block 8 opposite to the clamping groove 2 is arranged in an arc shape to reduce the resistance during sliding and ensure that the limiting block 8 can quickly and smoothly slide into the limiting groove 3.

[0031] As Figure 4 , Figure 5 shown in the figure, the separating component includes a trigger plate 11 slidably installed at the bottom of the claw body 4. A sliding groove 10 is opened at the bottom of the claw body 4. The trigger plate 11 is slidably installed inside the sliding groove 10. In the middle of the top end of the trigger plate 11, a positioning rod 13 is fixedly installed. On both sides of the end of the positioning rod 13 away from the trigger plate 11, a rotating sleeve rod 14 is fixedly connected. A number of linkage plates 15 are equidistantly rotatably connected to the outer walls of the two rotating sleeve rods 14. The other ends of the number of linkage plates 15 are all rotatably installed with a rotating shaft 16. One side of the rotating shaft 16 is rotatably connected to one side of the limiting block 8. A number of return springs 12 are arranged at the bottom of the trigger plate 11. The bottom ends of the return springs 12 are fixedly connected to the bottom of the claw body 4;

[0032] When the claw body 4 needs to be replaced, hold the upper end of the claw body 4 and pull it upward with force. The trigger plate 11 compresses the return spring 12 at its bottom under the upward pulling force to complete its downward movement, thereby driving the linkage plate 15 to rotate, and then driving the limiting block 8 to slide towards the center on the fixed sliding rail 6 through the rotating shaft 16 until the limiting block 8 completely slides out of the limiting groove 3. Then, pull out the claw body 4 along the vertical direction of the outer wall of the claw disc 1 from the clamping groove 2 to complete the separation operation.

[0033] Those of ordinary skill in the art should understand that the discussion of any above embodiment is only exemplary, and is not intended to imply that the scope of the present invention is limited to these examples; under the idea of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, which are not provided in detail for the sake of brevity.

[0034] The present utility model aims to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A fixture for quickly replacing the chuck of a lathe, characterized in that, Comprising: A chuck plate (1), on the top surface of which a number of clamping grooves (2) are arranged in a circumferential array. On the opposite sides of the inside of each clamping groove (2), a number of limiting grooves (3) are symmetrically arranged. Inside each clamping groove (2), a clamping jaw body (4) is inserted. Inside the clamping jaw body (4), a cavity (5) is formed. A limiting component, which is arranged on both sides of the clamping jaw body (4) and is used to fix the clamping jaw body (4) on the chuck plate (1). A separating component, which is arranged at the bottom of the clamping jaw body (4) and is used to release the fixation between the clamping jaw body (4) and the chuck plate (1).

2. The fixture for quickly replacing the lathe chuck according to claim 1, wherein, The clamping groove (2) is arranged in an inverted T shape, and the clamping jaw body (4) is arranged in an inverted T shape adapted to the clamping groove (2).

3. The fixture for quickly replacing the lathe chuck according to claim 1, characterized in that, The limiting component includes a number of fixed sliding rails (6) fixedly installed inside the cavity (5). On both sides of the middle of the clamping jaw body (4), a number of through holes (7) are symmetrically arranged. Inside each of the through holes (7), a limiting block (8) is slidably installed. On the top surface of each limiting block (8), a sliding groove (9) is formed. The bottom of the sliding groove (9) is slidably connected to the bottom of the fixed sliding rail (6). The centers of the a number of limiting grooves (3) are on a straight line, and the heights of the a number of limiting grooves (3) gradually decrease from the inside to the outside. The heights of the a number of limiting blocks (8) respectively match the a number of limiting grooves (3).

4. The fixture for quickly replacing the lathe chuck according to claim 3, characterized in that The surface of the limiting block (8) close to the clamping groove (2) is arranged in an arc shape.

5. The fixture for quickly replacing the lathe chuck according to claim 3, characterized in that, The separating component includes a trigger plate (11) slidably installed at the bottom of the clamping jaw body (4). A sliding groove (10) is formed at the bottom of the clamping jaw body (4), and the trigger plate (11) is slidably installed inside the sliding groove (10). In the middle of the top end of the trigger plate (11), a positioning rod (13) is fixedly installed. On both sides of the end of the positioning rod (13) away from the trigger plate (11), a rotating sleeve rod (14) is fixedly connected. On the outer walls of the two rotating sleeve rods (14), a number of linkage plates (15) are equidistantly rotatably connected. The other ends of the a number of linkage plates (15) are rotatably installed with a rotating shaft (16). One side of the rotating shaft (16) is rotatably connected to one side of the limiting block (8).

6. The fixture for quickly replacing the lathe chuck jaws according to claim 5, characterized in that, A number of reset springs (12) are arranged at the bottom of the trigger plate (11), and the bottom ends of the reset springs (12) are fixedly connected to the bottom of the clamping jaw body (4).

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