Post-pull positioning dustproof passive rubber chuck
By designing a dustproof passive rubber chuck with a rear-pull positioning system, and using wear-resistant rubber collets and a tapered fit, the problems of single positioning and dust ingress of traditional chucks are solved. This achieves flexible positioning and high-precision clamping, improving processing efficiency and equipment lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-23
- Publication Date
- 2026-03-03
AI Technical Summary
Traditional chuck positioning methods are limited and cannot flexibly select axial forward or backward positioning. After multiple clamping operations, the clamping accuracy becomes unstable, and dust can easily enter the gaps and movement clearances of the collet, affecting the service life and processing results.
A passive rubber chuck with rear-pull positioning and dust prevention is designed. The rubber collet is made of wear-resistant elastic rubber material, combined with tapered fit and anti-slip texture. The cylinder drives the connecting sleeve to drive the sliding sleeve and the rubber collet to achieve front and rear positioning, prevent dust from entering, and enhance clamping force and accuracy.
It achieves flexible positioning and high-precision clamping of the chuck, improves processing flexibility and stability, extends service life, reduces maintenance costs, and enhances the reliability and accuracy of the processing.
Smart Images

Figure CN223960908U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of clamp technology, specifically to a passive rubber clamp with a rear-pull strap positioning and dustproof design. Background Technology
[0002] In the field of machining, the chuck is a key component of machine tools used to clamp workpieces, and its performance directly affects machining accuracy and efficiency.
[0003] Traditional chucks have a single positioning method, which cannot flexibly select axial forward or backward positioning, limiting the machining scenarios; the clamping accuracy is unstable after multiple clamping, which can easily lead to workpiece machining errors; dust can easily enter the gaps and movement clearances of the collet, affecting its service life; the collet is prone to flared clamping or linear clamping, resulting in poor clamping effect. To overcome these shortcomings, a passive rubber chuck with a rear-pull positioning dustproof design is proposed.
[0004] To address this, a passive rubber clamp with a rear-pull positioning and dustproof design is proposed. Utility Model Content
[0005] The purpose of this utility model is to provide a passive rubber clamp with a rear-pull strap positioning and dustproof design to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:
[0007] A passive rubber clamp with a rear-pull positioning and dustproof design includes a chassis. The chassis has multiple sets of insertion slots, and a sliding sleeve is movably inserted into the insertion slots on the surface of the chassis. A connecting sleeve is threaded to the end of the sliding sleeve. A body is fixedly installed on the end face of the chassis. A rubber collet is inserted into the sliding sleeve, and the rubber collet is movably inserted into the inner wall of the body.
[0008] Furthermore, the bottom surface of the sliding sleeve has an opening to form a plug-in portion, and the sliding sleeve is movably plugged into the plug-in slot on the surface of the chassis through the plug-in portion at its end.
[0009] Furthermore, the surface of the body is provided with a countersunk threaded hole, and a screw is inserted into the countersunk threaded hole. The surface of the rubber collet is provided with a groove, and the end of the screw is located inside the groove, which is used to limit the downward movement of the rubber collet.
[0010] Furthermore, the tapered surface at the front end of the body and the tapered surface at the end of the rubber collet form a matching taper, so as to radially clamp or release the workpiece when the rubber collet moves axially.
[0011] Furthermore, a flange is fixedly connected to the end of the chassis, which is connected to the equipment via the flange, and the connecting sleeve is connected to the cylinder at the tail end of the main shaft.
[0012] Furthermore, the rubber collet is made of wear-resistant elastic rubber material, and its inner surface is provided with anti-slip texture.
[0013] The beneficial effects of this utility model are as follows:
[0014] By connecting to machine tools via flanges, quick and stable installation is achieved, improving the versatility and ease of use of the chuck, shortening equipment assembly time, and enabling both front-end and rear-end positioning. This adapts to different machining scenarios and clamping requirements, providing greater machining flexibility.
[0015] Rubber collets can completely enclose and clamp workpieces, providing greater clamping force and higher clamping accuracy, enhancing the stability of workpiece clamping, and are suitable for workpieces of various shapes and sizes, especially for clamping workpieces with complex shapes.
[0016] The rubber collet is made of wear-resistant elastic rubber material. It features a lightweight design to reduce interference and has good elasticity and wear resistance. It can adapt to frequent clamping and loosening operations, extending its service life. The anti-slip texture on the inner surface increases friction when clamping the workpiece, effectively preventing the workpiece from sliding and improving the stability and reliability of the processing. In addition, the rubber collet is easy to replace, reducing maintenance costs. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0018] Figure 2 This is a side view of the present invention;
[0019] Figure 3 This is an exploded view of this utility model;
[0020] Figure 4 This is a partial exploded view of this utility model;
[0021] Figure 5 This is a cross-sectional view of the present invention;
[0022] Reference numerals: 1. Chassis; 11. Insertion slot; 2. Connecting sleeve; 3. Sliding sleeve; 31. Opening; 32. Insertion part; 4. Body; 5. Rubber collet; 6. Flange; 7. Countersunk threaded hole; 8. Screw; 9. Groove. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0026] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, 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 this utility model.
[0027] like Figures 1 to 5 As shown, a passive rubber clamp with a rear-pull positioning dustproof type includes a chassis 1. The chassis 1 has multiple sets of insertion slots 11, and a sliding sleeve 3 is movably inserted into the insertion slots 11 on the surface of the chassis 1. A connecting sleeve 2 is threaded to the end of the sliding sleeve 3. A body 4 is fixedly installed on the end face of the chassis 1. A rubber clip 5 is inserted into the sliding sleeve 3, and the rubber clip 5 is movably inserted into the inner wall of the body 4. More specifically, the connecting sleeve 2 is connected to the cylinder at the tail end of the spindle. When the cylinder drives the connecting sleeve 2 to move backward, the connecting sleeve 2 drives the sliding sleeve 3 to slide backward in the insertion slot 11 of the chassis 1. The sliding sleeve 3 drives the rubber collet 5 to move backward. Under the action of the taper of the body 4, the rubber collet 5 contracts, thereby firmly clamping the workpiece. Conversely, when the cylinder drives the connecting sleeve 2 to move forward, the sliding sleeve 3 drives the rubber collet 5 to move forward. Under the action of rubber tension, the inner hole of the rubber collet 5 expands, releasing the workpiece. It is then connected to the machine tool through the flange 6 to achieve stable installation.
[0028] An opening 31 is provided on the bottom surface of the sliding sleeve 3 to form a insertion part 32. The sliding sleeve 3 is movably inserted into the insertion groove 11 on the surface of the chassis 1 through the insertion part 32 at its end. More specifically, when the sliding sleeve 3 is movably inserted into the insertion groove 11 on the surface of the chassis 1, the insertion part 32 fits tightly against the inner wall of the insertion groove 11, effectively preventing external dust and cutting fluid from entering its interior, reducing wear and contamination of internal components, and extending service life.
[0029] The surface of the body 4 has a countersunk threaded hole 7, and a screw 8 is threaded into the countersunk threaded hole 7. The surface of the rubber collet 5 has a groove 9, and the end of the screw 8 is located inside the groove 9, which is used to limit the downward movement of the rubber collet 5. More specifically, by rotating the screw 8, the screw 8 is threaded into the countersunk threaded hole 7, so that the end of the screw 8 is located inside the groove 9, thereby limiting the downward movement of the rubber collet 5, ensuring the stability and accuracy of the rubber collet 5 when clamping or releasing the workpiece, and preventing it from descending excessively, which could lead to insufficient clamping force or equipment damage.
[0030] The tapered surface at the front end of the body 4 and the tapered surface at the end of the rubber collet 5 form a matching taper, allowing the rubber collet 5 to radially clamp or release the workpiece during axial movement. More specifically, if the sliding sleeve 3 moves the rubber collet 5 backward, the rubber collet 5 contracts radially under the action of the taper of the body 4, thereby clamping the workpiece; conversely, if the sliding sleeve 3 moves the rubber collet 5 forward, the rubber collet 5 separates from the taper of the body 4, and the inner hole of the rubber collet 5 expands under the action of rubber tension, releasing the workpiece. The taper fit design achieves efficient clamping and releasing of the workpiece, improving clamping accuracy and stability.
[0031] A flange 6 is fixedly connected to the end of the chassis 1, and the chassis 1 is connected to the equipment via the flange 6. The connecting sleeve 2 is connected to the cylinder at the tail end of the spindle. More specifically, the connecting sleeve 2 is connected to the cylinder at the tail end of the spindle. The movement of the cylinder drives the connecting sleeve 2 and the sliding sleeve 3 to move, thereby driving the rubber collet 5 to clamp and release the workpiece. The flange 6 allows for easy integration with machine tools and other processing equipment, enabling automated processing operations and improving work efficiency and processing accuracy.
[0032] The rubber collet 5 is made of wear-resistant elastic rubber material, and its inner surface is provided with anti-slip texture. More specifically, the rubber collet 5 is made of wear-resistant elastic rubber material, which has good elasticity, wear resistance and corrosion resistance, and can adapt to frequent clamping and loosening operations, extending its service life. Its inner surface is provided with anti-slip texture, which can increase friction when clamping workpieces, preventing the workpieces from sliding or shifting during processing, effectively improving the stability and reliability of clamping, and ensuring the accuracy of the processing.
[0033] In summary: The connecting sleeve 2 is connected to the cylinder at the tail end of the spindle. When the cylinder drives the connecting sleeve 2 to move backward, the connecting sleeve 2 drives the sliding sleeve 3 to slide backward in the insertion slot 11 of the chassis 1. The sliding sleeve 3 drives the rubber collet 5 to move backward. Under the action of the taper of the body 4, the rubber collet 5 contracts, thus firmly clamping the workpiece. Conversely, when the cylinder drives the connecting sleeve 2 to move forward, the sliding sleeve 3 drives the rubber collet 5 to move forward. Under the action of rubber tension, the inner hole of the rubber collet 5 expands, releasing the workpiece. It is then connected to the machine tool through the flange 6 to achieve stable installation.
[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A rear pull strap positioning dust-proof passive rubber collet, characterized by, The utility model relates to a kind of chucking device, including chassis (1), the chassis (1) is opened with multiple groups of insertion slot (11), and the insertion slot (11) in the surface of chassis (1) is movably inserted with sliding sleeve (3), sliding sleeve (3) end is threadedly connected with connecting sleeve (2), the end surface of the chassis (1) is fixedly installed body (4), the sliding sleeve (3) is inserted with rubber cylinder clamp (5), and its rubber cylinder clamp (5) is movably inserted with the inner wall of body (4).
2. A dust-proof passive rubber collet for positioning a rear pull strap according to claim 1, characterized in that, The surface of the bottom end of the sliding sleeve (3) is provided with an opening (31) to form an insertion portion (32), and the sliding sleeve (3) is movably inserted into the insertion slot (11) on the surface of the chassis (1) through the insertion portion (32) at the end thereof.
3. A dust-proof passive rubber collet for positioning a rear pull strap according to claim 1, characterized in that, The surface of the body (4) is provided with a countersunk threaded hole (7), and a screw (8) is threadedly inserted into the countersunk threaded hole (7). The surface of the rubber cylinder clamp (5) is provided with a notch (9), and the end of the screw (8) is located inside the notch (9) to limit the downward movement of the rubber cylinder clamp (5).
4. A dust-proof passive rubber collet of rear pull strap positioning according to claim 1, characterized in that, The tapered surface at the front end of the body (4) cooperates with the tapered surface at the end of the rubber cylinder clamp (5) to radially clamp or release the workpiece when the rubber cylinder clamp (5) moves axially.
5. A rear pull strap positioning dust-proof passive rubber collet of claim 1, wherein, The end of the chassis (1) is fixedly connected with a flange plate (6), which is connected with the equipment through the flange plate (6). The connecting sleeve (2) is connected with the cylinder at the tail end of the main shaft.
6. A rear pull strap positioning dust-proof passive rubber collet of claim 1, wherein, The rubber cylinder clamp (5) is made of wear-resistant elastic rubber material, and the inner surface thereof is provided with anti-slip lines.