Novel chuck structure, chuck adjustment device and its usage method

Abstract

This invention belongs to the field of chuck manufacturing and processing technology, and discloses a novel chuck structure, chuck adjustment device, and method of use. It includes a standard chuck, a tray, a base jaw, and a chuck jaw. The tray is mounted on the standard chuck, and a workpiece is mounted on the tray. The standard chuck and the tray are coaxial. A sliding block is mounted on the standard chuck, and a mounting groove is provided on the tray. The sliding block reciprocates within the mounting groove along the radial direction of the standard chuck. The base jaw is mounted on the sliding block, and a chuck jaw is slidably mounted on the base jaw. The chuck jaw moves radially along the standard chuck. The novel chuck structure and the chuck jaw adjustment device work together to solve the problems of large errors in existing chuck jaws after radius adjustment according to different parts, and the high cost of processing different workpieces with corresponding chuck jaws individually.

Description

Technical Field

[0001] This invention relates to the field of chuck manufacturing and processing technology, and in particular to a novel chuck structure, chuck adjustment device, and method of use. Background Technology

[0002] Three-jaw chucks are widely used in manufacturing. The position of the jaws in a three-jaw chuck is critical; the distance between the jaws and the chuck's center must be consistent. Typically, the concentricity error should be less than 0.01mm, and even as low as 0.002mm. Current technology involves assembling the jaws onto the chuck and rotating them sequentially around the chuck's center. However, this can introduce machining errors, leading to excessive concentricity errors. Furthermore, different jaw sizes are required for each workpiece, increasing costs. Alternatively, the jaws can be connected to the chuck's slider via keyways. When gripping workpieces of different diameters, jaws of different diameters are needed, moving them to the target size. However, this movement introduces new errors between the multiple jaw sets, which cannot be corrected promptly, resulting in significant concentricity errors and making it impossible to machine parts. Summary of the Invention

[0003] The purpose of this invention is to provide a novel chuck structure, chuck adjustment device, and method of use, which solves the problems of large errors in the existing technology after the chuck radius is adjusted according to different parts, and high cost of processing different workpieces with corresponding chucks individually.

[0004] To achieve this objective, the present invention adopts the following technical solution: The present invention provides a novel jaw structure, including a standard chuck, a tray, a base jaw, and a jaw. The tray is mounted on the standard chuck, and a workpiece is mounted on the tray. The standard chuck and the tray are coaxial. A sliding block is mounted on the standard chuck, and a mounting groove is provided on the tray. The sliding block reciprocates within the mounting groove along the radial direction of the standard chuck. A base jaw is mounted on the sliding block, and the jaw is slidably mounted on the base jaw. The jaw moves radially along the standard chuck.

[0005] Preferably, the jaws include three sets, and the jaws are distributed at equal intervals around the circumference of the standard chuck.

[0006] Preferably, the base claw is provided with a sliding groove on both sides of the standard chuck radially, and the lower end of the claw is symmetrically provided with a locking part, which is slidably installed in the sliding groove.

[0007] Preferably, the upper side of the base claw is provided with first screw holes at equal intervals along the radial direction of the standard chuck, the chuck claw is provided with elongated holes, the first bolt passes through the elongated holes and is screwed into the first screw holes, and the first screw holes are provided at equal intervals on the base claw.

[0008] Preferably, the base claw is provided with a fixing part on the side near the center of the standard chuck, and a second screw hole is formed on the fixing part. A second bolt is inserted into the second screw hole and abuts against the claw.

[0009] Preferably, a first through hole is formed on the base claw, a third screw hole is formed on the sliding block, and a third bolt passes through the first through hole and is screwed into the third screw hole.

[0010] The present invention also provides a chuck adjustment device, including the novel chuck structure described above, and further including a positioning component and a limiting plate. The limiting plate is annular, and the positioning component includes a limiting rod that abuts against the outer side of the chuck. The limiting rod can reciprocate radially along the tray. The limiting plate is placed on the tray, and the chuck is located inside the limiting plate. A limiting block is installed on the lower side of the limiting plate and is inserted into the mounting groove. When the sliding block moves, the limiting block abuts against the base chuck on the side away from the center of the standard chuck, and the standard chuck can rotate around its own axis.

[0011] Preferably, the positioning assembly further includes a positioning rod, which is mounted on the machine base. A locking block is slidably mounted on the positioning rod. The locking block is provided with a first connecting hole and a second connecting hole. The positioning rod is perpendicular to the horizontal plane and passes through the first connecting hole. The limiting rod is slidably mounted in the second connecting hole.

[0012] Preferably, the limiting rod is provided with a scale.

[0013] The present invention also provides a method of using the chuck adjustment device, comprising the chuck adjustment device described above, and further comprising the following steps:

[0014] S1, the standard chuck is installed on the rotating shaft, and the limit plate is placed on the tray so that the limit block is inserted into the mounting slot;

[0015] S2, move the sliding block so that the base claw on the sliding block abuts against the limiting block;

[0016] S3, adjust the position of the limit rod so that the distance between the end of the limit rod that contacts the jaw and the center of the standard chuck is the same as the workpiece radius;

[0017] S4, rotate the second bolt to push the chuck along the base chuck, so that the outer wall of the chuck abuts against the limit rod;

[0018] S5, pass the first bolt through the elongated hole and screw it into the first screw hole;

[0019] S6, rotate the standard chuck 120° and adjust the next set of jaws to make them abut against the limit rod;

[0020] S7. Repeat steps S4-S6 until all three sets of jaws are adjusted. Remove the limit plate. The jaw positions on the standard chuck are now adjusted.

[0021] Beneficial effects: By rotating the second bolt, the jaws can move along the base jaws, and the position of the jaws can be finely adjusted. This allows for flexible changes in the diameter of the standard chuck, accommodating workpieces of different sizes. Simultaneously, the limiting rods within the jaw adjustment device ensure that each jaw abuts against the limiting rod, eliminating errors in the distance between each set of jaws from the center of the standard chuck and correcting the position of the jaws, ensuring that the jaws on the standard chuck meet the concentricity requirements. Attached Figure Description

[0022] Figure 1 This is a working main body diagram of the claw adjustment device of the present invention;

[0023] Figure 2 This is a bottom view of the working jaw adjustment device of the present invention;

[0024] Figure 3 This is a working main body diagram of the claw adjustment device of the present invention (without limit disk and limit block);

[0025] Figure 4 This is a diagram showing the connection between the limiting disk and the limiting block of the present invention.

[0026] In the diagram: 1-Standard chuck; 2-Pattern; 21-Mounting slot; 3-Base claw; 31-First screw hole; 32-Fixing part; 33-First through hole; 4-Claw; 41-Elongated hole; 5-Second bolt; 6-Positioning assembly; 61-Limit rod; 62-Positioning rod; 63-Locking block; 7-Limiting disc; 8-Limiting block. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0028] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0031] In the current technology, different jaws are usually used to connect workpieces of different sizes. However, each set of jaws needs to be installed after the standard chuck before processing. This will result in processing errors, causing the concentricity of the jaws to fail to meet the processing requirements of the parts. At the same time, the processing cost of each set of jaws corresponding to each workpiece is high.

[0032] To solve the above problems, such as Figures 1 to 4 As shown, the present invention provides a novel jaw structure, including a standard chuck 1, a tray 2, a base jaw 3, and a jaw 4. The tray 2 is mounted on the standard chuck 1 and can carry a workpiece. The standard chuck 1 and the tray 2 are coaxial. A sliding block is mounted on the standard chuck 1, and a mounting groove 21 is provided on the tray 2. The sliding block reciprocates within the mounting groove 21 along the radial direction of the standard chuck 1. The base jaw 3 is mounted on the sliding block, and the jaw 4 is slidably mounted on the base jaw 3. The jaw 4 moves radially along the standard chuck 1.

[0033] The chuck adjusted by this invention is usually a three-jaw chuck. The jaws 4 include three sets, and the jaws 4 are evenly distributed around the circumference of the standard chuck 1. It should be noted that the jaw adjustment device of this invention can be applied to standard chucks 1 with different numbers of jaws 4, and is not limited to three-jaw chucks. The number of limit blocks 8 corresponds one-to-one with the number of jaws 4.

[0034] The position of the base jaw 3 on the standard chuck 1 can be roughly adjusted by the sliding block, which allows the jaw 4 to clamp workpieces of different sizes. This makes the new jaw structure of the present invention more versatile and reduces the cost of machining the jaw 4 separately. At the same time, since the jaw 4 can slide along the base jaw 3, the three sets of jaws 4 can be finely adjusted along the radial direction of the standard chuck 1 to eliminate concentricity error. When machining the workpiece, the error value generated after machining the workpiece is reduced, so that the concentricity between the clamped workpiece and the jaw 4 is within the allowable error range.

[0035] The base claw 3 has a sliding groove on both sides of the standard chuck 1 radially. The lower end of the claw 4 has symmetrical locking parts on both sides. The locking parts are slidably installed in the sliding groove. The claw 4 can be adjusted along the sliding groove to achieve stepless adjustment of the position of the claw 4. At the same time, it is easy to push the claw 4 against the limit rod 61 by the second bolt 5.

[0036] The base claw 3 has first screw holes 31 arranged at equal intervals along the radial direction of the standard chuck 1. The chuck 4 has elongated holes 41. The first bolt passes through the elongated holes 41 and is screwed into the first screw holes 31. The first screw holes 31 are arranged at equal intervals on the base claw 3.

[0037] The lower side of the elongated hole 41 can usually accommodate at least one set of first screw holes 31, so that the first bolt can pass through and be screwed into the first screw hole 31. After the position of the chuck 4 is adjusted by the limiting rod 61, it can be fixed to the base chuck 3 by the first bolt, so as to stabilize the workpiece.

[0038] A fixing part 32 is provided on the side of the base claw 3 near the center of the standard chuck 1. A second screw hole is formed on the fixing part 32, and a second bolt 5 is inserted into the second screw hole. The second bolt 5 abuts against the claw 4.

[0039] By rotating the second bolt 5, the second bolt 5 can be moved along its own axis, allowing the pawl 4 to move along the groove on the base pawl 3, thereby reducing the concentricity error between the three pawls 4. In addition, since the friction between the pawl 4 and the base pawl 3 is relatively large, it is easier to push the pawl 4 by rotating the second bolt 5. By rotating the second bolt 5 by a small angle, the position of the pawl 4 can be adjusted more steadily and precisely, so that the pawl 4 can just make contact with the limit rod 61.

[0040] A first through hole 33 is formed on the base claw 3, and a third screw hole is formed on the sliding block. The third bolt passes through the first through hole 33 and is screwed into the third screw hole. The base claw 3, the pawl 4 and the sliding block are fixed together by the above-mentioned detachable connection method, which facilitates later maintenance and disassembly.

[0041] The jaw adjustment device of the present invention is used in conjunction with the novel jaw structure. The jaw adjustment device includes a positioning component 6 and a limiting disk 7. The limiting disk 7 is annular. The positioning component 6 includes a limiting rod 61, which abuts against the outer side of the jaw 4. The limiting rod 61 can reciprocate radially along the tray 2. The limiting disk 7 is placed on the tray 2. The jaw 4 is inside the limiting disk 7. A limiting block 8 is installed on the lower side of the limiting disk 7. The limiting block 8 is inserted into the mounting groove 21. When the sliding block moves, the limiting block 8 abuts against the base jaw 3 on the side away from the center of the standard chuck 1. The standard chuck 1 can rotate around its own axis.

[0042] By setting the limiting plate 7, before the chuck 4 abuts against the limiting rod 61, the base chuck 3 is extended outward. The limiting plate 7 is first installed on the tray 2, which can eliminate the wedge gap on the standard chuck 1 and make the base chuck 3 itself within the allowable concentricity error range.

[0043] Then, by rotating the standard chuck 1, each jaw 4 can contact one side of the contact end on the limit rod 61. The position of the limit rod 61 remains unchanged. Rotating the standard chuck 1 causes each jaw 4 to abut against the limit rod 61 in sequence, correcting the error between the jaws 4 and reducing the concentricity error.

[0044] The positioning assembly 6 also includes a positioning rod 62, which is mounted on the machine base. A locking block 63 is slidably mounted on the positioning rod 62. The locking block 63 is provided with a first connecting hole and a second connecting hole. The positioning rod 62 is perpendicular to the horizontal plane and passes through the first connecting hole. The limiting rod 61 is slidably mounted in the second connecting hole.

[0045] By setting the positioning rod 62, the height of the locking block 63 on the positioning rod 62 can be changed. The positioning component 6 can be adapted to three-jaw chucks of different heights. At the same time, by adjusting the length of the limiting rod 61, the jaw 4 can be adapted to the inner diameter of different workpieces. The position of the jaw 4 can be finely adjusted by the limiting rod 61, thereby reducing the concentricity error of the jaw 4 on the standard chuck 1. The limiting rod 61 is provided with a scale, which is convenient for the adjustment personnel to use as an adjustment reference, so that the position of the limiting rod 61 is more accurate. The locking block 63 is provided with a locking handle. When the locking handle is rotated, the diameter of the second connecting hole can be reduced, which makes it easier to lock the limiting rod 61.

[0046] The present invention also provides a method of using the chuck adjustment device, comprising the following steps:

[0047] S1, the standard chuck 1 is installed on the rotating shaft, and the limit plate 7 is placed on the tray 2, so that the limit block 8 is inserted into the mounting groove 21;

[0048] S2, move the sliding block so that the base claw 3 on the sliding block abuts against the limiting block 8;

[0049] S3, adjust the position of the limit rod 61 so that the distance between the end of the limit rod 61 that contacts the jaw 4 and the center of the standard chuck 1 is the same as the workpiece radius;

[0050] S4, rotate the second bolt 5 to push the chuck 4 along the base chuck 3, so that the outer wall of the chuck 4 abuts against the limit rod 61;

[0051] S5, pass the first bolt through the elongated hole 41 and screw it into the first screw hole 31;

[0052] S6, rotate the standard chuck 1 120°, and adjust the next set of jaws 4 to abut against the limit rod 61;

[0053] S7. Repeat steps S4-S6 until all three sets of jaws 4 are adjusted. Remove the limit plate 7. The position of jaws 4 on the standard chuck 1 is now adjusted.

[0054] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A jaw adjustment device, characterized in that, The chuck includes a standard chuck (1), a tray (2), a base jaw (3), and a jaw (4). The tray (2) is mounted on the standard chuck (1), and a workpiece is mounted on the tray (2). The standard chuck (1) and the tray (2) are coaxial. A sliding block is mounted on the standard chuck (1), and a mounting groove (21) is provided on the tray (2). The sliding block reciprocates within the mounting groove (21) along the radial direction of the standard chuck (1). A base jaw (3) is mounted on the sliding block, and the jaw (4) is slidably mounted on the base jaw (3). The jaw (4) moves radially along the standard chuck (1). The jaws (4) comprise three sets, and the jaws (4) are distributed at equal intervals around the circumference of the standard chuck (1); The jaw adjustment device further includes a positioning component (6) and a limiting plate (7). The limiting plate (7) is circular. The positioning component (6) includes a limiting rod (61). The limiting rod (61) abuts against the outside of the jaw (4). The limiting rod (61) can reciprocate radially along the tray (2). The limiting plate (7) is placed on the tray (2). The jaw (4) is inside the limiting plate (7). A limiting block (8) is installed on the lower side of the limiting plate (7). The limiting block (8) is inserted into the mounting groove (21). When the sliding block moves, the limiting block (8) abuts against the base jaw (3) on the side away from the center of the standard chuck (1). The standard chuck (1) can rotate around its own axis.

2. The jaw adjustment device according to claim 1, characterized in that, The base claw (3) is provided with a sliding groove on both sides of the standard chuck (1) in the radial direction. The lower end of the claw (4) is provided with a locking part on both sides symmetrically. The locking part is slidably installed in the sliding groove.

3. The jaw adjustment device according to claim 1, characterized in that, The base claw (3) has a first screw hole (31) arranged at equal intervals along the radial direction of the standard chuck (1) on its upper side. The chuck (4) has an elongated hole (41). The first bolt passes through the elongated hole (41) and is screwed into the first screw hole (31). The first screw holes (31) are arranged at equal intervals on the base claw (3).

4. The jaw adjustment device according to claim 3, characterized in that, The base claw (3) is provided with a fixing part (32) on the side near the center of the standard chuck (1). A second screw hole is formed on the fixing part (32), and a second bolt (5) is inserted in the second screw hole. The second bolt (5) abuts against the claw (4).

5. The jaw adjustment device according to claim 1, characterized in that, A first through hole (33) is formed on the base claw (3), and a third screw hole is formed on the sliding block. The third bolt passes through the first through hole (33) and is screwed into the third screw hole.

6. The jaw adjustment device according to claim 1, characterized in that, The positioning component (6) further includes a positioning rod (62), which is mounted on the machine base. A locking block (63) is slidably mounted on the positioning rod (62). The locking block (63) is provided with a first connecting hole and a second connecting hole. The positioning rod (62) is perpendicular to the horizontal plane and passes through the first connecting hole. The limiting rod (61) is slidably mounted in the second connecting hole.

7. The jaw adjustment device according to claim 6, characterized in that, The limiting rod (61) is provided with a scale.

8. A method of using a chuck adjustment device, characterized in that, The chuck adjustment device according to claim 4 further includes the following steps: S1, the standard chuck (1) is installed on the rotating shaft, and the limiting plate (7) is placed on the tray (2), so that the limiting block (8) is inserted into the mounting slot (21); S2, move the sliding block so that the base claw (3) on the sliding block abuts against the limiting block (8); S3, adjust the position of the limit rod (61) so that the distance between the end of the limit rod (61) that contacts the jaw (4) and the center of the standard chuck (1) is the same as the workpiece radius; S4, rotate the second bolt (5) to push the pawl (4) along the base pawl (3) so that the outer wall of the pawl (4) abuts against the limiting rod (61); S5, pass the first bolt through the elongated hole (41) and screw it into the first screw hole (31); S6, rotate the standard chuck (1) 120° and adjust the next set of jaws (4) to make them abut against the limit rod (61); S7. Repeat steps S4-S6 until all three sets of jaws (4) are adjusted. Take out the limit plate (7). The position adjustment of the jaws (4) on the standard chuck (1) is complete.

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