A chuck for a positioner
By designing an adjustable main chuck and a secondary chuck with a nine-point clamping structure, the stability problem of traditional three-jaw chucks when clamping heavy, irregularly shaped parts is solved, achieving high-precision and high-efficiency clamping results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINAN XINHAO SOLDERING TECH CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-06-02
AI Technical Summary
Traditional three-jaw chucks lack sufficient clamping stability when holding heavy and irregularly shaped parts, making it difficult to meet the requirements of high-precision machining.
The design features a main clamping head with adjustable position and a secondary clamping head that can be installed later, forming a nine-point clamping structure. The movable jaws move synchronously through a small bevel gear driving a large bevel gear with a planar thread drive disc, combined with a detachable bolt connection.
It improves the clamping stability and adaptability of irregularly shaped parts, enhances processing accuracy and efficiency, and reduces usage costs.
Smart Images
Figure CN224309645U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of positioner technology, and in particular relates to a chuck for positioners. Background Technology
[0002] In existing machining and welding fields, positioner chucks serve as crucial clamping tools, their performance directly impacting machining accuracy and efficiency. While traditional three-jaw chucks can meet clamping requirements to some extent, their clamping stability is often insufficient when dealing with heavy or bulky objects, especially parts with irregularly shaped bottoms. This can lead to parts loosening, shifting, or even detaching during machining, severely affecting machining quality and production efficiency.
[0003] Furthermore, traditional three-jaw chucks have limited clamping points and poor adaptability to clamping irregularly shaped parts, making it difficult to meet diverse and high-precision machining requirements. Therefore, developing a positioner chuck with higher clamping stability and adaptability is particularly important. Utility Model Content
[0004] The purpose of this utility model is to provide a chuck for a positioner. By designing a main chuck head with a flexible adjustable position and a secondary chuck head that can be installed later, a nine-point clamping structure is formed, which significantly improves the clamping stability and adaptability of irregular parts, especially heavy and sluggish objects.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model relates to a chuck for a positioner, comprising a chuck body, movable jaws, a main chuck head, a secondary chuck head, a large bevel gear planar threaded drive disc, a small bevel gear drive rod, and a dustproof end cover. A circular groove for mounting the large bevel gear planar threaded drive disc is formed in the center of the upper surface of the chuck body. The chuck body has three evenly distributed outwardly extending support arms. Guide grooves are formed on the support arms to linearly guide the movable jaws. A circular hole is formed on the chuck body for the small bevel gear drive rod to pass through. The front end of the small bevel gear drive rod drives the large bevel gear planar threaded drive disc to rotate. The large bevel gear planar threaded drive disc synchronously drives the three movable jaws to move. The main chuck head is snapped onto the movable jaws and is detachably fixed to the movable jaws by two first bolts. A secondary chuck head is detachably mounted on each side of the main chuck head by a second bolt.
[0007] As a preferred embodiment of this utility model, a row of first threaded holes is provided at the upper end of the movable claw; a slot that mates with the main clamping head is provided on the side of each movable claw between two adjacent first threaded holes; the cross-section of the slot is a right-angled trapezoidal structure.
[0008] As a preferred embodiment of this utility model, the main clamping head includes a clamping block that mates with the clamping slot; a main clamping claw head is fixed at the upper end of the clamping block; two vertically arranged through holes are provided on the main clamping claw head; a row of vertically arranged first V-shaped grooves are provided at the front end of the main clamping claw head; a pair of square posts are symmetrically fixed on both sides of the main clamping claw head; threaded through holes that mate with the second bolt are provided on the square posts.
[0009] As a preferred embodiment of this utility model, the secondary clamping head includes a rectangular frame plate; the upper and lower inner walls of the rectangular frame plate are in contact with the upper and lower walls of the square column; the length of the rectangular frame plate is greater than the length of the square column; one end of the rectangular frame plate is provided with a through hole that mates with the second bolt; an inclined plate is fixed to the other end of the rectangular frame plate; a semi-cylindrical part is provided at the end of the inclined plate; and a row of vertically arranged second V-shaped grooves is provided in the semi-cylindrical part.
[0010] As a preferred embodiment of this utility model, the large bevel gear planar thread drive disc includes a disc; a large bevel tooth is provided at the lower end of the disc; a planar thread is provided on the upper surface of the disc; the small bevel gear drive rod includes a round rod passing through the round hole; a small bevel tooth is provided at the inner end of the round rod to mesh with the large bevel tooth; and a handle is fixed at the outer end of the round rod.
[0011] As a preferred embodiment of this utility model, the outer wall of the round rod at one end of the small bevel tooth is provided with an annular groove; a limiting ring is installed on the annular groove; a first rectangular groove is provided on the bottom surface of the round groove at the end of the round hole; and a second rectangular groove is provided on the inner wall of the round groove at the end of the round hole to cooperate with the limiting ring.
[0012] As a preferred embodiment of this utility model, the dustproof end cap includes a circular plate that mates with the circular groove; the circular plate has three rectangular slots that mate with the three movable claws; a support column is fixed at the center of the lower surface of the circular plate; and a ball is embedded in the lower end of the support column.
[0013] This utility model has the following beneficial effects:
[0014] 1. This utility model designs and installs two auxiliary clamping heads on both sides of the main clamping head. With the six auxiliary clamping heads working together with the three main clamping heads, the number of clamping points is upgraded from the traditional three to nine, which significantly improves the clamping stability and adaptability for irregular parts.
[0015] 2. The movable jaw of this utility model has a row of first threaded holes at the upper end, which makes the installation position of the main jaw adjustable, thus making it suitable for adjusting and clamping parts of a certain size range, improving the versatility and flexibility of the chuck.
[0016] 3. This utility model uses a small bevel gear drive rod to drive the large bevel gear planar thread drive disk to rotate, which in turn drives the three movable jaws to move synchronously, realizing the fast and accurate clamping of the chuck and improving work efficiency.
[0017] 4. The main clamping head and the movable clamping claw, as well as the auxiliary clamping head and the main clamping head, are all connected by detachable bolts, which facilitates installation, disassembly and maintenance and reduces the cost of use.
[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the structure of the chuck used in the positioner of this utility model.
[0021] Figure 2 for Figure 1 A schematic diagram of the structure after removing the small bevel gear drive rod and the dustproof end cover.
[0022] Figure 3 This is a schematic diagram of the chuck body.
[0023] Figure 4 This is a schematic diagram of the movable gripper.
[0024] Figure 5 This is a structural diagram of the main card header.
[0025] Figure 6 This is a schematic diagram of the secondary card head.
[0026] Figure 7 This is a schematic diagram of the structure of a large bevel gear planar thread drive disc.
[0027] Figure 8 This is a schematic diagram of the small bevel gear drive rod.
[0028] Figure 9 This is a schematic diagram of the dustproof end cap.
[0029] The attached diagram lists the components represented by each number as follows:
[0030] 1-Chuck body, 2-Modible jaw, 3-Main chuck head, 4-Secondary chuck head, 5-Large bevel gear flat thread drive disc, 6-Small bevel gear drive rod, 7-Dustproof end cover, 11-Circular groove, 12-Support arm, 13-Guide channel, 14-Circular hole, 15-First rectangular groove, 16-Second rectangular groove, 21-First threaded hole, 22-Chuck slot, 31-Chuck block, 32-Main jaw head, 33-Through-through Hole, 34-First V-groove, 35-Square column, 36-Threaded through hole, 41-Rectangular frame plate, 42-Round through hole, 43-Slanted plate, 44-Semi-cylindrical part, 45-Second V-groove, 51-Disc, 52-Large conical tooth, 53-Flat thread, 61-Round rod, 62-Small conical tooth, 63-Handle rod, 64-Limiting ring, 71-Round plate, 72-Rectangular groove, 73-Support column, 74-Spherical ball. Detailed Implementation
[0031] 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 scope of protection of the present utility model. Specific Implementation Example 1:
[0033] Please see Figure 1-9 As shown, this utility model is a chuck for a positioner. The overall design is a three-jaw chuck structure, including a chuck body 1, movable jaws 2, main jaw 3, auxiliary jaw 4, large bevel gear plane thread drive disc 5, small bevel gear drive rod 6, and dustproof end cover 7.
[0034] The upper surface of the chuck body 1 has a circular groove 11 for mounting the large bevel gear flat thread drive disc 5. The lower end of the chuck body 1 has a cylinder for connecting to the positioner. The chuck body 1 has three evenly distributed outwardly extending support arms 12. Each support arm 12 has a guide groove 13 for linearly guiding the movable jaw 2. The chuck body 1 has a circular hole 14 for the small bevel gear drive rod 6 to pass through.
[0035] The small bevel gear drive rod 6 drives the large bevel gear planar thread drive disk 5 to rotate. The large bevel gear planar thread drive disk 5 synchronously drives the three movable jaws 2 to move. The movable jaw 2 body slides in engagement with the guide channel 13, and the lower part of the movable jaw 2 body near the large bevel gear planar thread drive disk 5 is provided with a thread structure that meshes with the planar thread 53 to achieve synchronous movement. A row of first threaded holes 21 is opened at the upper end of the movable jaw 2. A slot 22 that mates with the main jaw 3 is opened on the side of each movable jaw 2 between two adjacent first threaded holes 21. The cross-section of the slot 22 is a right-angled trapezoidal structure to ensure that the main jaw 3 is securely installed.
[0036] The main clamping head 3 is snapped onto the movable clamping claw 2, and the main clamping head 3 is detachably fixed to the movable clamping claw 2 by two first bolts.
[0037] The main clamping head 3 includes a clamping block 31 that mates with the clamping slot 22. A main clamping claw head 32 is fixed to the upper end of the clamping block 31. Two vertically arranged through holes 33 are formed on the main clamping claw head 32. A row of vertically arranged first V-shaped grooves 34 is formed at the front end of the main clamping claw head 32. A pair of square posts 35 are symmetrically fixed on both sides of the main clamping claw head 32. The square posts 35 are provided with threaded through holes 36 that mate with the second bolt for subsequent installation of the auxiliary clamping head 4.
[0038] For heavy objects, especially those with irregularly shaped bottoms, a secondary clamping head 4 is detachably installed on each side of the main clamping head 3 using second bolts to ensure clamping stability. The secondary clamping head 4 includes a rectangular frame plate 41. The upper and lower inner walls of the rectangular frame plate 41 contact the upper and lower walls of the square post 35. The length of the rectangular frame plate 41 is greater than the length of the square post 35. One end of the rectangular frame plate 41 has a through hole 42 that mates with the second bolt. A ramp 43 is fixed to the other end of the rectangular frame plate 41. A semi-cylindrical portion 44 is provided at the end of the ramp 43. The semi-cylindrical portion 44 has a row of vertically arranged second V-shaped grooves 45 to further enhance the clamping effect.
[0039] The large bevel gear drive disc 5 includes a disc 51. A large bevel gear 52 is formed at the lower end of the disc 51. A planar thread 53 is formed on the upper surface of the disc 51. The small bevel gear drive rod 6 includes a rod 61 passing through a circular hole 14. A small bevel gear 62, meshing with the large bevel gear 52, is formed on the inner end of the rod 61. A handle 63 is fixed to the outer end of the rod 61. An annular groove is formed on the outer wall of the rod 61 at the end of the small bevel gear 62. A limiting ring 64 is installed on the annular groove. A first rectangular groove 15, containing lubricating oil, is formed on the bottom surface of the groove 11 at the end of the circular hole 14. A second rectangular groove 16, cooperating with the limiting ring 64, is formed on the inner wall of the groove 11 at the end of the circular hole 14, further restricting the movement of the small bevel gear drive rod 6.
[0040] The dustproof end cover 7 includes a circular plate 71 that fits into the circular groove 11. The circular plate 71 has three rectangular slots 72 that engage with three movable claws 2. A support column 73 is fixed at the center of the lower surface of the circular plate 71. A ball 74 is embedded at the lower end of the support column 73 to reduce friction between the dustproof end cover 7 and the disc 51 and improve smoothness of use.
[0041] This embodiment utilizes a three-jaw chuck structure combined with an adjustable main chuck head 3 and subsequently installable auxiliary chuck heads 4 to achieve flexible clamping of components of varying sizes within a certain range. It provides greater clamping stability, especially for heavier objects. After the three main chuck heads 3 clamp the end of the component, the six auxiliary chuck heads 4 further clamp the end, increasing the number of clamping points from the traditional three to nine, significantly improving the clamping stability and adaptability for irregularly shaped components.
[0042] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0043] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A chuck for a positioner, characterized in that: Includes chuck body (1), movable jaw (2), main chuck head (3), auxiliary chuck head (4), large bevel gear plane thread drive disc (5), small bevel gear drive rod (6), and dustproof end cover (7); The upper end face of the chuck body (1) is provided with a circular groove (11) for mounting the large bevel gear plane thread drive disk (5); the chuck body (1) is provided with three evenly distributed outwardly extending support arms (12); the support arms (12) are provided with guide grooves (13) that are linearly guided and cooperate with the movable jaws (2); the chuck body (1) is provided with a circular hole (14) for the small bevel gear drive rod (6) to pass through; the front end of the small bevel gear drive rod (6) drives the large bevel gear plane thread drive disk (5) to rotate; the large bevel gear plane thread drive disk (5) synchronously drives the three movable jaws (2) to move. The main clamping head (3) is clamped onto the movable clamping claw (2), and the main clamping head (3) is detachably fixed to the movable clamping claw (2) by two first bolts; A secondary clamp (4) is detachably installed on each side of the main clamp (3) by a second bolt.
2. The chuck for a positioner according to claim 1, characterized in that, The upper end of the movable claw (2) has a row of first threaded holes (21); the side of the movable claw (2) between two adjacent first threaded holes (21) has a slot (22) that cooperates with the main chuck (3); the cross-section of the slot (22) is a right trapezoidal structure.
3. The chuck for a positioner according to claim 2, characterized in that, The main clamping head (3) includes a clamping block (31) that mates with the clamping slot (22); a main clamping claw head (32) is fixed at the upper end of the clamping block (31); two vertically arranged through holes (33) are provided on the main clamping claw head (32); a row of vertically arranged first V-shaped grooves (34) is provided at the front end of the main clamping claw head (32); a pair of square posts (35) are symmetrically fixed on both sides of the main clamping claw head (32); threaded through holes (36) that mate with the second bolt are provided on the square posts (35).
4. The chuck for a positioner according to claim 3, characterized in that, The secondary clamp (4) includes a rectangular frame plate (41); the upper and lower inner walls of the rectangular frame plate (41) are in contact with the upper and lower walls of the square column (35); the length of the rectangular frame plate (41) is greater than the length of the square column (35); one end of the rectangular frame plate (41) is provided with a through hole (42) that mates with the second bolt; the other end of the rectangular frame plate (41) is fixed with an inclined plate (43); the end of the inclined plate (43) is provided with a semi-cylindrical part (44); the semi-cylindrical part (44) is provided with a row of vertically arranged second V-shaped grooves (45).
5. The chuck for a positioner according to claim 1, characterized in that, The large bevel gear planar thread drive disc (5) includes a disc (51); the lower end of the disc (51) is provided with a large bevel tooth (52); the upper surface of the disc (51) is provided with a planar thread (53); the small bevel gear drive rod (6) includes a round rod (61) passing through the round hole (14); the inner end of the round rod (61) is provided with a small bevel tooth (62) that meshes with the large bevel tooth (52); a handle (63) is fixed to the outer end of the round rod (61).
6. The chuck for a positioner according to claim 5, characterized in that, The outer wall of the round rod (61) at one end of the small bevel tooth (62) has an annular groove; a limiting ring (64) is installed on the annular groove; a first rectangular groove (15) is formed on the bottom surface of the round groove (11) at the end of the round hole (14); a second rectangular groove (16) is formed on the inner wall of the round groove (11) at the end of the round hole (14) to cooperate with the limiting ring (64).
7. The chuck for a positioner according to claim 1, characterized in that, The dustproof end cap (7) includes a circular plate (71) that mates with the circular groove (11); the circular plate (71) has three rectangular slots (72) that mate with the three movable claws (2); a support column (73) is fixed at the center of the lower surface of the circular plate (71); a ball (74) is inlaid at the lower end of the support column (73).