Three-jaw clamping fixture with positioning structure
By introducing an anti-skew mechanism into the three-jaw clamping fixture, the skew problem caused by manual placement of the scroll disc on the chuck is solved, ensuring the level consistency of the positioning ears and improving the milling cutter The machining quality is achieved and the efficient sliding and reset of the jaws are achieved.
Patent Information
- Application Number
- CN202420889504.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-26
AI Technical Summary
In the prior art, the manual placement of the scroll disc on the chuck is likely to cause skew, which makes it difficult for the positioning ear to maintain the same horizontal line, affecting the quality of subsequent milling cutter processing.
A three-jaw clamping fixture with anti-skew mechanism is designed. By providing a pressing column, a slide, a compression spring and a limiting rod on the claws, the scroll disc is ensured to be guided to the clamping, so that the scroll disc is guided to the clamping, so that the The positioning ears are in the same horizontal line, and the movement obstacles are reduced by the cooperation of the slider and the spring, so as to achieve smooth sliding and resetting of the claws.
It effectively prevents the skew of the scroll, ensures the level consistency of the positioning ears, improves the quality of subsequent milling cutter processing, and realizes the ease of use of the claws and the convenience of multiple use through the spring force.
Smart Images
Figure CN222133489U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of three-claw clamps, in particular to a three-claw clamping clamp with a positioning structure. Background Art
[0002] In the prior art, when performing turning and milling processing of the scroll disk positioning ears, a three-jaw chuck is conventionally used to fix the scroll disk to ensure the stability of the scroll disk during the processing.
[0003] However, from the perspective of actual processing, the placement of the scroll disk on the chuck is mostly manual, and manual placement will inevitably have certain errors, causing the scroll disk to tilt on the chuck, which in turn makes it difficult for the two locating ears of the fixed scroll disk to be on the same horizontal line, so that during the subsequent milling cutter processing, there are certain differences in the milling grooves on the two locating ears, affecting the processing quality. Utility Model Content
[0004] In order to solve the above technical problems, a three-jaw clamping fixture with a positioning structure is provided, which solves the problem that in the prior art, the placement of the scroll disk on the chuck is mostly manual operation. Manual placement will inevitably result in certain errors, which makes the scroll disk tilt on the chuck, and further makes it difficult for the two positioning ears of the fixed scroll disk to be on the same horizontal line, so that during the subsequent milling cutter processing, there are certain differences in the milling grooves on the two positioning ears, affecting the processing quality.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is: a three-claw clamping fixture with a positioning structure, comprising a mounting seat, a disc body arranged on the mounting seat, a scroll disc arranged in the middle of the top surface of the disc body, and two positioning ears symmetrically arranged on the scroll disc, three groups of claws are distributed around the outer periphery of the scroll disc, the claws are slidably connected to the mounting seat, and also includes an anti-skew mechanism arranged on one of the claws;
[0006] The anti-skew mechanism includes a mounting frame which is convex and detachably arranged on the top surface of the claw and two fixing blocks which are symmetrically arranged at both ends of the mounting frame. A sliding seat is arranged on the top surface of the fixing block, and an extrusion column is fixed on one surface of the sliding seat, and the end of the extrusion column faces the positioning ear.
[0007] Preferably, a slide bar is fixed on the top surface of the fixed block, the slide seat slides on the slide bar, a connecting plate is fixed between the two slide seats, a connecting block is vertically fixed on the mounting frame, and a compression spring is fixed between the connecting plate and the connecting block.
[0008] Preferably, a limiting rod is provided on the inner side of the compression spring and is fixed perpendicularly to the connecting plate, and the end of the limiting rod crosses the connecting block and is fixed with a positioning piece.
[0009] Preferably, a sliding opening is provided at one end of the mounting frame facing the fixed block, an extension plate is slidably provided in the sliding opening and is fixed perpendicularly to the fixed block, a plurality of fixing holes are equidistantly provided on the side wall of the extension plate, a positioning screw is provided on the outer side of the mounting frame, and the positioning screw is threadedly inserted into the sliding opening and extends into one of the fixing holes.
[0010] Preferably, the end of the squeezing column protrudes from the claw toward one end of the center of the disc body.
[0011] Compared with the prior art, the advantages of the utility model are:
[0012] (1) Through the setting of the anti-skew mechanism, when the three groups of claws are synchronously brought together to clamp the scroll disk, one of the squeeze columns in the anti-skew mechanism can pre-contact the corresponding positioning ear on the scroll disk, so that the scroll disk is deflected by force, causing the two squeeze columns to synchronously contact the two positioning ears. In this way, the skewed scroll disk can be positioned and corrected, so that the two positioning ears are on the same horizontal line, ensuring the quality of the subsequent positioning ear milling groove.
[0013] (2) By setting the slide bar and the clamping spring, after the scroll disk is positioned and corrected by the squeezing column, when the claw further slides and contacts the scroll disk, the squeezing column continues to squeeze the positioning ear, so that the slide seat slides in the opposite direction on the slide bar, and acts on the connecting plate to compress the clamping spring to deform. In this way, the slidability of the slide seat on the slide bar is utilized to reduce the hindrance of the squeezing column to the movement of the claw, and the elastic force of the clamping spring is utilized. When the claw slides in the opposite direction and the squeezing column is separated from the positioning ear, the connecting plate can push the slide seat and the squeezing column back to reset under the elastic force of the clamping spring to facilitate subsequent secondary use. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 This is a schematic diagram of the structure of the slide bar and the anti-skew mechanism of the utility model;
[0016] Figure 3 It is a schematic diagram of the internal structure of the mounting frame of the utility model.
[0017] The numbers in the figure are:
[0018] 1. Mounting seat; 2. Disk body; 3. Scroll disk; 4. Positioning ear; 5. Clamping claw; 6. Slide bar; 7. Mounting frame; 8. Fixed block; 9. Slide seat; 10. Extrusion column; 11. Connecting plate; 12. Connecting block; 13. Limit rod; 14. Compression spring; 15. Extension plate; 16. Fixing hole; 17. Positioning screw. DETAILED DESCRIPTION
[0019] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.
[0020] Reference Figure 1-3 As shown, a three-claw clamping fixture with a positioning structure comprises a mounting seat 1, a disc body 2 arranged on the mounting seat 1, a scroll disc 3 arranged in the middle of the top surface of the disc body 2, and two positioning ears 4 symmetrically arranged on the scroll disc 3, three groups of claws 5 are distributed around the outer periphery of the scroll disc 3, and the claws 5 are slidably connected to the mounting seat 1;
[0021] It can be known from the search that the mounting seat 1 and the claw 5 are the main components of the existing conventional three-meat chuck. As an existing mature fixing device, this solution does not introduce the internal structure and driving method of the mounting seat 1 in detail;
[0022] Its general usage is to place the scroll disk 3 to be processed in the middle of the disk body 2, and then operate the three groups of claws 5 to slide toward the center of the disk body 2. When the three groups of claws 5 synchronously contact the outer wall of the scroll disk 3, the three groups of scroll disks 3 cooperate to achieve the clamping effect of the scroll disk 3, thereby ensuring the stability of the scroll disk 3 during processing.
[0023] However, in practice, the placement of the scroll plate 3 on the disk body 2 is mostly done manually, and there will inevitably be certain errors in the manual placement, which makes the scroll plate 3 skew on the disk body 2, and further makes it difficult for the positioning ears 4 of the scroll plate 3 to be on the same horizontal line after being fixed, so that during the later milling cutter processing, there will be certain differences in the milling grooves on the two positioning ears 4, affecting the processing quality;
[0024] For this purpose, refer to Figure 1 and Figure 2 As shown, it is worth noting that it also includes an anti-skew mechanism arranged on one of the claws 5;
[0025] The anti-skew mechanism includes a mounting frame 7 detachably disposed on the top surface of the claw 5 and two fixing blocks 8 symmetrically disposed at both ends of the mounting frame 7. A slide seat 9 is disposed on the top surface of the fixing block 8. An extrusion column 10 is fixed on one surface of the slide seat 9. The end of the extrusion column 10 faces the positioning ear 4.
[0026] The end of the extrusion column 10 protrudes from the end of the claw 5 toward the center of the disc body 2;
[0027] By setting the anti-skew mechanism, when the three groups of claws 5 are brought together synchronously to implement the clamping of the scroll plate 3, one of the extrusion columns 10 in the anti-skew mechanism can pre-contact the corresponding positioning ear 4 on the scroll plate 3, so that the scroll plate 3 is deflected by force, causing the two extrusion columns 10 to contact the two positioning ears 4 synchronously, so that the skewed scroll plate 3 can be positioned and corrected, so that the two positioning ears 4 are on the same horizontal line, ensuring the quality of the subsequent milling of the positioning ears 4.
[0028] Further, refer to Figure 2 As shown, it is worth noting that a slide bar 6 is fixed on the top surface of the fixed block 8, a slide seat 9 slides on the slide bar 6, a connecting plate 11 is fixed between the two slide seats 9, a connecting block 12 is vertically fixed on the mounting frame 7, and a compression spring 14 is fixed between the connecting plate 11 and the connecting block 12;
[0029] By setting the slide bar 6 and the clamping spring 14, after the scroll disk 3 is positioned and corrected by the squeezing column 10, when the claw 5 further slides and contacts the scroll disk 3, the squeezing column 10 continues to squeeze the positioning ear 4, so that the slide seat 9 is forced to slide in the opposite direction on the slide bar 6, and the connecting plate 11 compresses the clamping spring 14 to deform. In this way, the slidability of the slide seat 9 on the slide bar 6 is utilized to reduce the hindrance of the squeezing column 10 to the movement of the claw 5, and by utilizing the elastic force of the clamping spring 14, when the claw 5 slides in the opposite direction and the squeezing column 10 is separated from the positioning ear 4, the connecting plate 11 can push the slide seat 9 and the squeezing column 10 back to their original position under the elastic force of the clamping spring 14, so as to facilitate subsequent secondary use.
[0030] Further, refer to Figure 2 As shown, it is worth noting that a limiting rod 13 is provided on the inner side of the compression spring 14 and is fixed perpendicularly to the connecting plate 11. The end of the limiting rod 13 crosses the connecting block 12 and is fixed with a positioning piece.
[0031] Through the setting of the limit rod 13 and the positioning piece, when the extrusion column 10 is subjected to force and the slide 9 slides on the slide bar 6, the limit rod 13 can be synchronously retracted into the inner wall of the connecting block 12. When the connecting plate 11 is subjected to the elastic force of the compression spring 14 to cause the slide 9 and the extrusion column 10 to reset as a whole, the positioning piece on the limit rod 13 can position the slide 9 and the extrusion column 10 to prevent the slide 9 from being excessively subjected to the elastic force of the compression spring 14 and slipping off the slide bar 6, thereby affecting the use effect.
[0032] Further, refer to Figure 3 As shown, it is worth noting that a sliding opening is provided at one end of the mounting frame 7 facing the fixing block 8, an extension plate 15 is slidably provided in the sliding opening and is fixed vertically to the fixing block 8, a plurality of fixing holes 16 are equidistantly provided on the side wall of the extension plate 15, a positioning screw 17 is provided on the outer side of the mounting frame 7, the positioning screw 17 is threadedly inserted into the sliding opening and extends into one of the fixing holes 16;
[0033] By setting the extension plate 15 and the sliding mouth, the fixed block 8 is pushed and pulled to make the extension plate 15 move in the sliding mouth, that is, it is convenient to quickly adjust the distance between the two extrusion columns 10 according to the distance between the two positioning ears 4 on different types of swirl plates 3, thereby effectively enhancing the practicality and applicability of the device. In addition, after the sliding adjustment of the extension plate 15 is completed, the knob positioning screw 17 is then turned to make the positioning screw 17 pass into the corresponding fixing hole 16 under the threaded structure, so that the extension plate 15 can be locked.
[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A three-jaw clamping fixture with a positioning structure, comprising a mounting seat (1), a disk body (2) arranged on the mounting seat (1), a scroll disk (3) arranged in the middle of the top surface of the disk body (2), and two positioning ears (4) symmetrically arranged on the scroll disk (3), three groups of claws (5) are distributed around the outer periphery of the scroll disk (3), and the claws (5) are slidably connected to the mounting seat (1), characterized in that: It also includes an anti-skew mechanism arranged on one of the claws (5); The anti-skew mechanism comprises a mounting frame (7) which is detachably arranged on the top surface of the clamping claw (5) in a convex shape and two fixing blocks (8) which are symmetrically arranged at both ends of the mounting frame (7). A sliding seat (9) is arranged on the top surface of the fixing block (8). An extrusion column (10) is fixed on one surface of the sliding seat (9), and the end of the extrusion column (10) faces the positioning ear (4).
2. A three-jaw clamp with a positioning structure according to claim 1, characterized in that: A slide bar (6) is fixed on the top surface of the fixed block (8), the slide seat (9) slides on the slide bar (6), a connecting plate (11) is fixed between the two slide seats (9), a connecting block (12) is vertically fixed on the mounting frame (7), and a compression spring (14) is fixed between the connecting plate (11) and the connecting block (12).
3. A three-jaw clamp with a positioning structure according to claim 2, characterized in that: A limiting rod (13) is provided on the inner side of the compression spring (14) and is fixed perpendicularly to the connecting plate (11). The end of the limiting rod (13) crosses the connecting block (12) and is fixed with a positioning piece.
4. The three-jaw clamp with a positioning structure according to claim 1, characterized in that: A sliding opening is provided at one end of the mounting frame (7) facing the fixing block (8), an extension plate (15) is slidably arranged in the sliding opening and is fixed perpendicularly to the fixing block (8), a plurality of fixing holes (16) are equidistantly arranged on the side wall of the extension plate (15), a positioning screw (17) is provided on the outer side of the mounting frame (7), the positioning screw (17) is threadedly inserted into the sliding opening and extends into one of the fixing holes (16).
5. The three-jaw clamp with a positioning structure according to claim 1, characterized in that: The end of the squeezing column (10) protrudes from the claw (5) toward one end of the center of the disk body (2).