A static disc precision turning clamp

Abstract

The utility model relates to static chucking fixture technical field, concretely relates to a static disc precision turning fixture, including the hollow chuck and set up in the chuck multiple groups of rotating shaft, the top of each rotating shaft is provided with the card set component, and the card set component includes the bottom block, the card block and the moving block, the top middle part of bottom block is provided with the bottom groove, is fixed with the slide rod in the bottom groove, the outside of slide rod is equipped with spring and moving block, the bottom of moving block is fixed with the sliding block, and the top is provided with two sets of through -going grooves, the adjacent two sets of moving blocks are provided with the arc piece, the top of moving block is fixed with T type axle, and the top of T type axle is fixed through with card set disc rotation, and is fixed with moving block, and the fixture realizes the even clamping of static disc through multiple groups of rotating shaft cooperation card set component, compared with the three -point clamping of traditional three -jaw chuck, can make the clamping force more evenly distribute on the workpiece surface, significantly reduces the workpiece deformation risk caused by stress concentration.

Description

Technical Field

[0001] This utility model relates to the field of stationary disc turning fixtures, specifically to a stationary disc precision turning fixture. Background Technology

[0002] In the field of precision machining, the stationary disc is a core component of critical equipment such as compressors and pumps, and its machining accuracy directly determines the sealing performance, operational stability, and service life of the entire machine. Turning the stationary disc is a crucial process to ensure its precision, and the fixture, as the core component for positioning and clamping during the turning process, plays a decisive role in the machining quality due to its clamping stability, positioning accuracy, and adaptability.

[0003] Currently, most fixtures used for stationary disc turning on the market employ traditional three-jaw chucks or customized rigid fixtures. While traditional three-jaw chucks offer convenient operation, they suffer from uneven clamping force distribution. When clamping thin-walled or irregularly shaped stationary discs, localized stress concentration can easily lead to workpiece deformation, affecting the flatness and roundness accuracy after machining. Furthermore, the adjustment range of the jaws is limited, resulting in poor adaptability to stationary discs of different sizes. Changing the machining type requires replacing the entire jaws or performing complex fixture adjustments, increasing production preparation time and reducing machining efficiency.

[0004] While customized rigid fixtures can improve the clamping accuracy of specific models of stationary discs to some extent, they have an inherent drawback of poor versatility. When faced with the production needs of multiple varieties and small batches, fixtures must be designed and manufactured separately for each specification of stationary disc, which not only significantly increases equipment investment costs, but also further restricts production flexibility due to the cumbersome process of storing, maintaining and replacing the fixtures. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a static disc precision turning fixture, which can effectively solve the problems in the existing technology.

[0006] This utility model provides a static disc precision turning fixture, including a hollow chuck and multiple sets of rotating shafts disposed within the chuck. Each set of rotating shafts has a locking assembly at its top end. The locking assembly includes a base block, a locking block, and a moving block. The top center of the top of the base block has a bottom groove, and a sliding rod is fixed in the bottom groove. A spring and a moving block are sleeved on the outside of the sliding rod. A sliding block is fixed at the bottom end of the moving block, and two sets of through grooves are formed at its top end. An arc-shaped component is disposed between two adjacent sets of moving blocks. A T-shaped shaft is fixed at the top end of the moving block. The top end of the T-shaped shaft is fixed to the moving block by rotating with the locking disc.

[0007] Furthermore, the chuck has a side groove on its side wall that extends inward, and the side groove has a T-shaped structure. The bottom block has a sliding groove in the middle that extends inward, and the bottom block is engaged in the side groove through the sliding groove.

[0008] Furthermore, the bottom end of the base block is provided with an arc-shaped groove, and a threaded groove is provided in the arc-shaped groove, which engages and is fixed with the rotating shaft.

[0009] Furthermore, all the arc-shaped components are arc-shaped hollow ring structures, and each has a vertical rod fixed inside the through groove, which is set inside the arc-shaped component.

[0010] Furthermore, a T-shaped groove is provided at the bottom end of the card plate, and the T-shaped shaft is movably disposed in the T-shaped groove.

[0011] Furthermore, the top of the card plate is fixedly connected to the card block, and the outer side of the card block is stepped.

[0012] The beneficial effects of this utility model are as follows: the cooperative structure of the spring and slide bar in the clamping assembly can form an elastic buffer during the clamping process, which can not only ensure sufficient clamping force, but also avoid the pressure damage to the workpiece surface caused by rigid clamping. At the same time, in conjunction with the rotating connection structure of the T-shaped shaft and the clamping disk, adaptive fine adjustment can be realized during the clamping process, ensuring that the workpiece positioning reference coincides with the center height of the machine tool spindle, effectively improving the flatness, roundness and other accuracy indicators of turning. Moreover, the T-shaped shaft and the clamping disk are rotatably set, so the clamping block structure can rotate. Since the outer side of the clamping block is stepped, the bottom block structure can be fixedly clamped to a small-sized stationary disk from the inside, and multiple sets of clamping blocks can be used to fix and clamp a large-sized stationary disk from the outside. The spring can drive the sliding block to move on the slide bar, thereby realizing the fixed connection with stationary disks of different sizes.

[0013] In this device, the bottom block engages with the T-shaped side groove of the chuck sidewall via a sliding groove, and is simultaneously fixed to the rotating shaft via a threaded groove within an arc-shaped groove. This structure allows the installation position of the bottom block to be flexibly adjusted along the side groove. Combined with the independent adjustment function of multiple rotating shafts, it enables precise clamping of stationary discs of different diameters. The arc-shaped component adopts a hollow ring structure and engages with the through groove of the moving block via a vertical rod, allowing multiple moving blocks to move synchronously along the arc-shaped component. This ensures the synchronicity of clamping workpieces of different sizes, and can adapt to the processing needs of various specifications of stationary discs without changing the chuck jaws. This significantly improves the versatility of the fixture and reduces the fixture investment cost when producing multiple varieties. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the structure of this utility model; Figure 3 This is one of the structural exploded views of the card assembly in this utility model; Figure 4 This is the second exploded view of the structure of the card assembly in this utility model.

[0016] The labels in the diagram represent: 1. Chuck; 11. Side groove; 2. Rotating shaft; 3. Locking assembly; 31. Bottom block; 311. Threaded groove; 312. Bottom groove; 313. Slide rod; 314. Spring; 315. Slide groove; 32. Locking block; 321. Locking disc; 33. Moving block; 331. T-shaped shaft; 332. Through groove; 333. Sliding block; 4. Arc-shaped component. Detailed Implementation

[0017] 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, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] The present invention will be further described below with reference to the embodiments.

[0019] Example: A precision turning fixture for a stationary disc, as shown in the attached document. Figure 1 - Appendix Figure 4The device includes a hollow chuck 1 and multiple sets of rotating shafts 2 disposed within the chuck 1. Each set of rotating shafts 2 has a locking assembly 3 at its top. The locking assembly 3 includes a bottom block 31, a locking block 32, and a moving block 33. The bottom block 31 has a bottom groove 312 in the middle of its top. A sliding rod 313 is fixed in the bottom groove 312. A spring 314 and a moving block 33 are sleeved on the outside of the sliding rod 313. A sliding block 333 is fixed at the bottom of the moving block 33. Two sets of through grooves 332 are provided at the top. An arc-shaped piece 4 is disposed between two adjacent sets of moving blocks 33. A T-shaped shaft 331 is fixed at the top of the moving block 33. The top of the T-shaped shaft 331 is fixed to the moving block 33 by rotating and fixing with the locking disc 321. The chuck 1 has a side groove 11 extending inward on its side wall, and the side groove 11 has a T-shaped structure. The bottom block 31 has a sliding groove 315 extending inward in the middle, and the bottom block 31 is engaged in the side groove 11 through the sliding groove 315. The bottom block 31 engages with the T-shaped side groove 11 on the side wall of the chuck 1 through the sliding groove 315. At the same time, the bottom block 31 is engaged and fixed with the rotating shaft 2 through the threaded groove 311 in the arc groove. This structure allows the installation position of the bottom block 31 to be flexibly adjusted along the side groove 11. With the independent adjustment function of multiple sets of rotating shafts 2, it can achieve precise clamping of stationary discs of different diameters. The arc-shaped part 4 adopts a hollow ring structure and engages with the through groove 332 of the moving block 33 through the vertical rod, so that multiple sets of moving blocks 33 can move synchronously along the arc-shaped part 4, ensuring the synchronicity of clamping workpieces of different sizes. It can adapt to the processing needs of various specifications of stationary discs without changing the chuck jaws, greatly improving the versatility of the fixture and reducing the fixture investment cost when producing multiple varieties.

[0020] The bottom of the base block 31 has an arc-shaped groove, and a threaded groove 311 is formed within the arc-shaped groove. The threaded groove 311 engages and is fixed with the rotating shaft 2. The bottom of the clamping disc 321 has a T-shaped groove, and the T-shaped shaft 331 is movably disposed in the T-shaped groove. The top of the clamping disc 321 is fixedly connected to the clamping block 32, and the outer side of the clamping block 32 is stepped. The fixture achieves multi-point uniform clamping of the stationary disc through multiple sets of rotating shafts 2 and clamping components 3. Compared with the three-point clamping of the traditional three-jaw chuck 1, the clamping force can be more evenly distributed on the workpiece. The surface significantly reduces the risk of workpiece deformation caused by stress concentration; the cooperation structure between spring 314 and slide bar 313 in clamping assembly 3 can form an elastic buffer during clamping, which can ensure sufficient clamping force and avoid pressure damage to the workpiece surface caused by rigid clamping. At the same time, in conjunction with the rotating connection structure between T-shaft 331 and clamping disk 321, adaptive fine adjustment can be realized during clamping, ensuring that the workpiece positioning reference coincides with the center height of the machine tool spindle, effectively improving the flatness, roundness and other accuracy indicators of turning.

[0021] All arc-shaped components 4 are hollow ring structures, and each has a vertical rod fixed inside the through groove 332. The vertical rod is set inside the arc-shaped component 4. The T-slot at the bottom of the clamping plate 321 and the movable engagement structure with the T-shaft 331 allow the clamping plate 321 to rotate flexibly around the T-shaft 331. Combined with the threaded engagement between the rotating shaft 2 and the bottom block 31, the clamping state of the fixture can be quickly adjusted. During the clamping process, only the position of the bottom block 31 needs to be adjusted by rotating the shaft 2, and the elastic reset function of the spring 314 can be used to complete the quick clamping and unclamping of the workpiece. Compared with the cumbersome debugging process of traditional fixtures, the production preparation time is greatly shortened. At the same time, this structural design makes the maintenance and upkeep of the fixture more convenient, reduces equipment downtime, and effectively improves production efficiency.

[0022] The bottom block 31 and the chuck 1 are engaged by a T-shaped side groove 11 and a sliding groove 315, which, together with the threaded groove 311 and the rotating shaft 2, form a double positioning and fixing structure. This significantly improves the bottom block 31's resistance to cutting forces during turning, avoids the problem of clamping loosening, and ensures the stability of the machining process. All key mating parts are made with precise machining processes. Combined with the hollow ring structure design of the arc-shaped part 4, the overall weight of the fixture is reduced while ensuring structural strength, reducing the load on the machine tool spindle and extending the service life of the fixture and the machine tool.

[0023] Therefore, in practical use, the position of the bottom block 31 is adjusted by the threaded engagement between the rotating shaft 2 and the bottom block 31 according to the specifications and dimensions of the stationary disc to be processed. The bottom block 31 is engaged with the T-shaped side groove 11 on the side wall of the chuck 1 through the central sliding groove 315, and can slide smoothly along the side groove 11 until the annular clamping range formed by multiple sets of bottom blocks 31 matches the diameter of the stationary disc. At the same time, the arc-shaped part 4 is fixedly connected to the through groove 332 of the moving block 33 through the vertical rod, so that multiple sets of moving blocks 33 keep synchronous linkage along the arc-shaped part 4, ensuring concentricity during subsequent clamping. The stationary disk to be processed is placed between the clamping blocks 32 of the multiple clamping components 3. After the stationary disk is pushed to contact the clamping blocks 32, pressure is continued to be applied to make the clamping blocks 32 drive the clamping disk 321 to move outward. The T-slot at the bottom of the clamping disk 321 is movably engaged with the T-shaft 331, which can rotate flexibly according to the direction of force. At the same time, the T-shaft 331 drives the moving block 33 to slide along the slide rod 313 in the bottom groove 312 at the top of the bottom block 31. The moving block 33 compresses the spring 314 on the outside of the slide rod 313 and stores elastic potential energy. During this process, the stepped structure on the outside of the clamping block 32 is in contact with the surface of the stationary disk to achieve initial positioning. The elastic force of the spring 314 reacts to the moving block 33, so that the multiple clamping blocks 32 form a uniform elastic clamping force on the stationary disk, avoiding deformation caused by rigid clamping. At the same time, the rotational engagement between the T-shaft 331 and the clamping disk 321 allows the clamping block 32 to adapt to the slight deviation of the surface of the stationary disk, ensuring that the positioning reference of the stationary disk coincides with the center of the chuck 1. During the turning process, when the cutting force acts on the stationary disk, the bottom block 31 is fixed by the locking fit between the T-shaped side groove 11 and the slide groove 315 and the meshing of the threaded groove 311 and the rotating shaft 2, forming a double anti-displacement constraint, which effectively resists the displacement of the bottom block 31 caused by the cutting force; the elastic buffering effect of the spring 314 can absorb some of the cutting vibration and reduce the impact of vibration on the machining accuracy; the hollow ring structure of the arc-shaped part 4 keeps multiple sets of moving blocks 33 under synchronous force, avoids the clamping loosening caused by the overload of a single set of locking components 3, and ensures that the stationary disk is always in a stable positioning and clamping state during the machining process; After turning is completed, stop the machine tool and pull the locking block 32 outward to compress the spring 314 again with the moving block 33, thus removing the machined stationary disc. After removing the workpiece, the spring 314 releases its elastic potential energy, pushing the moving block 33 back to its original position along the slide bar 313, which in turn drives the T-shaft 331, the locking disc 321, and the locking block 32 back to their initial positions, preparing for the next clamping. If a different size stationary disc needs to be replaced, the previous adaptation and adjustment steps can be repeated; there is no need to replace the entire fixture assembly.

[0024] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A precision turning fixture for a stationary disc, characterized in that, The device includes a hollow chuck (1) and multiple sets of rotating shafts (2) arranged inside the chuck (1). Each set of rotating shafts (2) has a locking assembly (3) at its top. The locking assembly (3) includes a bottom block (31), a locking block (32), and a moving block (33). The bottom block (31) has a bottom groove (312) in the middle of its top. A sliding rod (313) is fixed in the bottom groove (312). A spring (314) and a moving block (33) are sleeved on the outside of the sliding rod (313). A sliding block (333) is fixed at the bottom of the moving block (33). Two sets of through grooves (332) are opened at the top. An arc-shaped piece (4) is arranged between two adjacent sets of moving blocks (33). A T-shaped shaft (331) is fixed at the top of the moving block (33). The top of the T-shaped shaft (331) is fixed to the moving block (33) by rotating and fixing with the locking disc (321).

2. The static disc precision turning fixture according to claim 1, characterized in that, The chuck (1) has a side groove (11) on its side wall facing inward, and the side groove (11) is a T-shaped structure. The bottom block (31) has a sliding groove (315) in the middle facing inward, and the bottom block (31) is engaged in the side groove (11) through the sliding groove (315).

3. A static disc precision turning fixture according to claim 1, characterized in that, The bottom end of the bottom block (31) is provided with an arc-shaped groove, and a threaded groove (311) is provided in the arc-shaped groove. The threaded groove (311) is engaged and fixed with the rotating shaft (2).

4. A precision turning fixture for a stationary disc according to claim 1, characterized in that, The arc-shaped parts (4) are all arc-shaped hollow ring structures, and each of them has a vertical rod fixed in the through groove (332), which is set in the arc-shaped parts (4).

5. A static disc precision turning fixture according to claim 4, characterized in that, The bottom end of the card plate (321) is provided with a T-shaped groove, and the T-shaped shaft (331) is movably disposed in the T-shaped groove.

6. A precision turning fixture for a stationary disc according to claim 1, characterized in that, The top of the card plate (321) is fixedly connected to the card block (32), and the outer side of the card block (32) is stepped.

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