A hydraulic chuck
By designing the chute and groove structure in the hydraulic chuck and installing a chip-proof part in the slider, the problem of iron chips entering the chuck gap is solved, improving the working stability of the chuck and the clamping accuracy of the workpiece.
Patent Information
- Application Number
- CN202421471626.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-25
AI Technical Summary
The iron filings generated by existing three-jaw chucks during processing are easily entered into the gap between the connecting groove, slider and fixed block, affecting the working stability of the chuck and the clamping accuracy of the workpiece.
A hydraulic chuck is designed, which adopts a sliding groove and groove structure of the chuck main body and the fixing block. The slider has a built-in anti-chip part, which extends into the groove, fills the groove of the fixing block to prevent iron chips from entering.
Effectively prevent iron filings from entering the key parts of the chuck, ensuring the stable movement of the fixed block, jaws and sliders, and improving the stability and accuracy of workpiece clamping.
Smart Images
Figure CN222740334U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of machinery and relates to a hydraulic chuck. Background Art
[0002] A three-jaw chuck refers to a machine tool accessory that uses the radial movement of three movable jaws evenly distributed on the chuck body to clamp and position the workpiece. It is a commonly used workpiece clamping device on machine tools.
[0003] In order to realize the clamping and positioning structure of the three-jaw chuck, it generally includes a chuck body, three fixed blocks and three claws connected to the three fixed blocks. Three radially arranged connecting grooves are opened on the end face of one end of the chuck body, and a slider is arranged in the connecting groove. The fixed block is fixed to the slider by bolts, and the claws are fixed on the side of the fixed block close to the center of the chuck body. The movement of the claws is controlled by sliding the slider back and forth, thereby achieving clamping or loosening of the workpiece.
[0004] However, when the actual machine tool processes the workpiece, a lot of iron chips will be generated. During the flying process, the iron chips are easy to enter the gap between the connecting groove, the slider and the fixed block, affecting the movement of the slider and the fixed block of the three-jaw chuck. The flying iron chips may even move through the gap to the end face of the jaw, affecting the stability and accuracy of the workpiece clamping. Utility Model Content
[0005] The utility model aims to solve the above problems in the prior art and proposes a hydraulic chuck to solve the problem that the existing iron filings easily affect the work of the three-jaw chuck.
[0006] The purpose of the utility model can be achieved through the following technical solutions:
[0007] A hydraulic chuck comprises a chuck body and a fixed block, the end face of one end of the chuck body having a recessed straight groove and the length direction of the groove is consistent with the radial direction of the chuck body, a slider that can slide relative to the groove is arranged in the groove, the fixed block has a recessed straight groove on the side facing the groove and the length direction of the groove is consistent with the length direction of the groove, the fixed block and the slider are fixed by fasteners, and is characterized in that the slider has a chip prevention portion extending into the groove of the fixed block at one end facing the fixed block, and the two sides of the chip prevention portion and the end face of the chip prevention portion away from the groove are respectively arranged adjacent to the two side walls and the bottom surface of the groove.
[0008] In the present hydraulic chuck, there are two groove bodies, namely a slide groove and a groove, between the fixed block and the chuck body, wherein a slider is arranged in the slide groove to realize sliding cooperation, so that the fixed block and the claw to be fixed on the fixed block can realize the action of clamping and releasing along the slide groove. At the same time, the slide groove is shielded by the slider. In addition, the opening of the groove on the fixed block, in conjunction with the chip prevention part extending into the groove, not only facilitates the stable connection of the fixed block, but also prevents iron chips from entering the groove, thereby ensuring the stability and reliability of the movement of the fixed block, the claw and the slider, and also avoiding the situation where iron chips enter the groove, or even enter the end face of the workpiece clamping position along the groove to affect the stability of the workpiece clamping. Here, the two side faces of the chip prevention part are adjacent to the two side walls of the groove, and the end face of the chip prevention part is adjacent to the bottom face of the groove, which means that the gap between the chip prevention part and the groove is small, so as to prevent iron chips from entering.
[0009] In the above-mentioned hydraulic chuck, the anti-chip part is in the shape of a long plate and the length direction of the anti-chip part is consistent with the length direction of the groove. The anti-chip part in the shape of a long plate can not only provide better support for the connection and abutment of the fixed block, but also extend the anti-chip distance, achieving a better anti-chip effect.
[0010] In the above hydraulic chuck, the groove width is not greater than the groove width at the opening of the slide groove. The groove width is not greater than the groove width at the opening of the slide groove, which can facilitate the production and assembly of the integrated slider and the chip guard.
[0011] In the above-mentioned hydraulic chuck, the slide groove is a T-slot, the cross-sectional shape of the slider is T-shaped, and the size of the slider matches the size of the slide groove. The cooperation between the T-slot and the T-block can prevent slipping, and the matching size means that the size of the slider is slightly smaller than the size of the slide groove, and the gap between the two is small to prevent iron filings from entering.
[0012] Compared with the prior art, the groove on the fixed block in the hydraulic chuck, combined with the chip protection portion extending into the groove, not only facilitates the stable connection of the fixed block, but also prevents iron chips from entering the groove, thereby ensuring the stability and reliability of the movement of the fixed block, the claws and the slider, and also avoiding the situation where iron chips enter the groove, or even enter along the groove to the end face of the workpiece clamping position and affect the stability of the workpiece clamping. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of the hydraulic chuck.
[0014] Figure 2 It is a structural schematic diagram of a slide block in the hydraulic chuck.
[0015] In the figure, 1, chuck body; 2, fixed block; 3, slide groove; 4, slider; 5, groove; 6, chip protection part. DETAILED DESCRIPTION
[0016] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0017] like Figure 1 and Figure 2 As shown, the hydraulic chuck comprises a disc-shaped chuck body 1 and three rectangular fixed blocks 2. The end surface of one end of the chuck body 1 is provided with three recessed straight grooves 3, the length direction of the three grooves 3 is consistent with the radial direction of the chuck body 1 and the three grooves 3 are evenly distributed around the axis of the chuck body 1. In this embodiment, the grooves 3 are T-shaped grooves, which are prior art and will not be described in detail.
[0018] Slide blocks 4 that can slide back and forth relative to the slide blocks 3 are disposed in the three slide blocks 3 . The cross-sectional shape of each slide block 4 is T-shaped and the size of the slide block 4 matches the size of the slide block 3 .
[0019] Since the structures of the three chutes 3 are the same, the structure of one of the chutes 3 is taken as an example for specific description.
[0020] The fixed block 2 has a concave groove 5 on one side facing the slide slot 3. The groove 5 is a long square groove, and the length direction of the groove 5 is consistent with the length direction of the slide slot 3. One end of the groove 5 is opened to the end surface of the fixed block 2 away from the center of the chuck body 1. In this embodiment, the groove width of the groove 5 is not greater than the groove width at the opening of the slide slot 3, and preferably the groove width is equal.
[0021] The end of the slider 4 facing the fixed block 2 has a chip prevention portion 6 extending into the groove 5 of the fixed block 2, and the two sides of the chip prevention portion 6 and the end surface of the chip prevention portion 6 away from the slide groove 3 are respectively arranged adjacent to the two side walls and the bottom surface of the groove 5 to fill the groove 5 of the fixed block 2. The fixed block 2 and the slider 4 are fixedly connected by bolts that pass through the fixed block 2 and are threadedly connected to the slider 4. In this embodiment, the chip prevention portion 6 is in the shape of a long plate and the length direction of the chip prevention portion 6 is consistent with the length direction of the groove 5. The length of the chip prevention portion 6 in the radial direction of the chuck body 1 is greater than the length of the matching portion of the slider 4 and the slide groove 3 in the radial direction of the chuck body 1.
[0022] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.
Claims
1. A hydraulic chuck, comprising a chuck body (1) and a fixed block (2), wherein the end surface of one end of the chuck body (1) is provided with a groove (3) in the shape of a straight groove, and the length direction of the groove (3) is consistent with the radial direction of the chuck body (1), and a slider (4) is arranged in the groove (3) and can slide relative to the groove (3), and the fixed block (2) has a groove (5) in the shape of a straight groove on the side facing the groove (3), and the length direction of the groove (5) is consistent with the length direction of the groove (3), and the fixed block (2) and the slider (4) are fixed by a fastener, characterized in that: The end of the sliding block (4) facing the fixed block (2) has a chip prevention portion (6) extending into the groove (5) of the fixed block (2), and the two sides of the chip prevention portion (6) and the end surface of the chip prevention portion (6) away from the slide groove (3) are respectively arranged adjacent to the two side walls and the bottom surface of the groove (5).
2. A hydraulic chuck according to claim 1, characterized in that: The chip prevention portion (6) is in the shape of a long plate, and the length direction of the chip prevention portion (6) is consistent with the length direction of the groove (5).
3. A hydraulic chuck according to claim 1 or 2, characterized in that: The groove width of the groove (5) is no greater than the groove width at the opening of the slide groove (3).
4. A hydraulic chuck according to claim 1 or 2, characterized in that: The slide groove (3) is a T-shaped groove, the cross-sectional shape of the slider (4) is T-shaped, and the size of the slider (4) matches the size of the slide groove (3).