Mechanical part machining clamp for lathe

Abstract

The mechanical part machining clamp for the lathe comprises a supporting sleeve and a supporting disc, the other end of a telescopic mechanism is rotationally connected with the edge of the supporting disc, a plurality of symmetrically-distributed arc-shaped sliding grooves are formed in the surface of a rotating disc, a sliding block is movably arranged in each arc-shaped sliding groove, a clamping jaw is arranged at the end of each sliding block, and the clamping jaws are connected with the supporting sleeve. A mounting cover body covering the rotary disc is coaxially and detachably arranged on the supporting disc, a sliding ring is coaxially arranged on the supporting sleeve, and penetrating holes are formed in the surfaces of the supporting sleeve and the supporting pipe. During use, when the telescopic mechanism stretches out and draws back, the rotary table can be driven to rotate, the arc-shaped sliding groove can drive all the sliding blocks to contract at the same time, when the rotary table rotates in the reverse direction, the arc-shaped sliding groove can drive all the sliding blocks to open at the same time, and therefore all the clamping jaws are driven to clamp a workpiece, the clamping force is large, manual adjustment is not needed, and the work efficiency is improved. And when the clamp rotates along with the machine tool, the telescopic mechanism can still continuously provide clamping force.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically a fixture for machining mechanical parts for lathes. Background Technology

[0002] A fixture is a device used in mechanical manufacturing to fix a workpiece in the correct position for machining or inspection. Fixtures are widely used in machining, with three-jaw chucks and four-jaw chucks being the most common. However, both three-jaw and four-jaw chucks require manual adjustment because the chuck jaws are driven by meshing threads, necessitating manual adjustment for clamping. This manual adjustment is cumbersome, requiring manual adjustment each time a workpiece is loaded or unloaded. Furthermore, the manually tightened clamping force cannot be maintained consistently; a larger force results in a larger clamping force, and a smaller force results in a smaller clamping force. Therefore, we propose a fixture for machining mechanical parts on a lathe. Utility Model Content

[0003] This invention provides a machining fixture for mechanical parts on a lathe, which has the advantages of automatic clamping and high clamping force, and solves the problems mentioned in the background art.

[0004] The technical solution of this utility model is implemented as follows: A machining fixture for mechanical parts of a lathe includes a support sleeve and a support plate. The support plate has a mounting hole at its center. A support tube is coaxially mounted on one end of the support sleeve. The mounting hole fits onto the support tube, and the support plate is detachably connected to the end of the support sleeve. A turntable is coaxially rotatably mounted on the end of the support tube. A certain distance is provided between the turntable and the support plate. A telescopic mechanism is provided within this distance. One end of the telescopic mechanism is rotatably connected to the edge of the turntable, and the other end of the telescopic mechanism is rotatably connected to the edge of the support plate. When the telescopic mechanism extends or retracts, it drives the turntable to rotate around the support tube. The surface of the turntable has multiple symmetrically distributed arc-shaped grooves. A slider is movably mounted in each arc-shaped groove. A pawl is provided at the end of each slider. A mounting cover is coaxially detachably mounted on the support plate to cover the turntable. A strip groove corresponding to the position of the arc-shaped groove is provided on the end face of the mounting cover. The pawl is slidably disposed in each strip groove. A slip ring is coaxially mounted on the support sleeve. Through holes are provided on the surfaces of both the support sleeve and the support tube.

[0005] Preferably, the end of the support sleeve away from the mounting cover is provided with a mounting flange coaxially, and multiple reinforcing parts are provided between the mounting flange and the support sleeve.

[0006] Preferably, the stator of the slip ring is detachably mounted on the stator support.

[0007] Preferably, the end of the support tube is coaxially provided with a mounting shaft, and a bearing hole is provided in the middle of the turntable. The bearing hole is fitted onto the mounting shaft and the two are connected by a bearing.

[0008] Preferably, the chuck includes a limiting seat connected to the end of the slider, the limiting seat being located on the side of the inner cavity of the mounting cover.

[0009] A sliding seat is movably provided in each strip groove, and the sliding seat is connected to the limiting seat. A strip seat is provided on the side of each strip groove, and the strip seat is connected to the sliding seat. The width of the strip seat and the limiting seat is greater than the width of the strip groove.

[0010] Preferably, each strip seat has a locking block installed at one end near the center of the mounting cover.

[0011] Preferably, each strip seat is provided with a strip opening, and a fastener connected to the sliding seat is provided inside the strip opening.

[0012] Compared with the prior art, when the telescopic mechanism extends or retracts, it can drive the turntable to rotate. When the turntable rotates in the forward direction, the arc-shaped slide can drive each slider to retract simultaneously. When the turntable rotates in the reverse direction, the arc-shaped slide can drive each slider to open simultaneously, thereby driving each jaw to clamp the workpiece. The clamping force is large, and no manual adjustment is required. Moreover, the telescopic mechanism can still provide clamping force as the machine tool rotates. Attached Figure Description

[0013] 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.

[0014] Figure 1 This is a schematic diagram of the explosive structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the explosive structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the explosive structure of this utility model.

[0017] Figure 4 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 5 This is a cross-sectional view of the present invention.

[0019] Figure 6 This is a schematic diagram of the structure of this utility model combined with the body.

[0020] In the diagram: 1. Mounting flange; 2. Support sleeve; 3. Slip ring; 4. Perforation; 5. Support tube; 6. Stator bracket; 7. Telescopic mechanism; 8. Mounting hole; 9. Support plate; 10. Turntable; 11. Arc-shaped slide groove; 12. Slider; 13. Limit seat; 14. Sliding seat; 15. Strip groove; 16. Mounting cover; 17. Strip seat; 18. Strip opening; 19. Clamping block; 20. Mounting shaft; 21. Bearing hole. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] Reference Figures 1 to 6 This utility model provides a technical solution: a mechanical component processing fixture for a lathe, including a support sleeve 2 and a support plate 9. The support plate 9 has a mounting hole 8 at its center. A support tube 5 is coaxially mounted on one end of the support sleeve 2. The support sleeve 2 and the support tube 5 are stepped. The mounting hole 8 is fitted onto the support tube 5, and the support plate 9 is detachably connected to the end of the support sleeve 2. That is, when the support plate 9 is fitted onto the support tube 5, the support plate 9 and the end face of the support sleeve 2 are fastened together by bolts, which facilitates the disassembly of the support plate 9.

[0023] A turntable 10 is coaxially mounted on the end of the support tube 5, and the two are rotatably connected by a bearing. Figure 1 As shown, a mounting shaft 20 is coaxially provided at the end of the support tube 5. The mounting shaft 20 is stepped with the support tube 5, as shown in the figure. Figure 3 As shown, a bearing hole 21 is provided in the middle of the turntable 10. The bearing hole 21 is fitted onto the mounting shaft 20 and the two are connected by a bearing. That is, the inner ring of the bearing is placed on the mounting shaft 20 and the outer ring is placed in the bearing hole 21, and the bearing is installed with an interference fit.

[0024] In this application, a certain gap must be maintained between the turntable 10 and the support plate 9, because a telescopic mechanism 7 needs to be installed within this gap. One end of the telescopic mechanism 7 is rotatably connected to the edge of the turntable 10, and the other end of the telescopic mechanism 7 is rotatably connected to the edge of the support plate 9. Figure 2 As shown, one end of the telescopic mechanism 7 is connected to the turntable 10 via a shaft (e.g., Figure 2 (As indicated by arrow B) is connected, and the other end of the telescopic mechanism 7 is also connected to the edge of the support plate 9 via a shaft (such as...). Figure 2(As indicated by the middle arrow A) The telescopic mechanism 7 is tilted and placed on one side of the support tube 5. When the telescopic mechanism 7 extends or retracts, it can drive the turntable 10 to rotate around the support tube 5. The distance between the turntable 10 and the support plate 9 is large enough so that the telescopic mechanism 7 will not touch the support tube 5 when it extends or retracts.

[0025] Furthermore, such as Figure 1 As shown, the surface of the turntable 10 is provided with multiple symmetrically distributed arc-shaped grooves 11. A slider 12 is movably mounted within each arc-shaped groove 11. The slider 12 has a cylindrical structure, and each slider 12 has a claw at its end. A mounting cover 16, which encloses the turntable 10, is coaxially and detachably mounted on the support plate 9. Specifically, the edge of the mounting cover 16 is fastened to the edge of the support plate 9 with bolts. The end face of the mounting cover 16 has strip-shaped grooves 15 corresponding to the positions of the arc-shaped grooves 11, and the claws are slidably positioned within each strip-shaped groove 15. Figure 1 and Figure 2 As shown, the chuck includes a limiting seat 13 connected to the end of the slider 12, as... Figure 4 As shown, the limiting seat 13 is placed on the side of the inner cavity of the mounting cover 16, and a sliding seat 14 is movably provided in each strip groove 15, and the sliding seat 14 is connected to the limiting seat 13.

[0026] Each strip-shaped seat 17 is provided on the side of each strip-shaped groove 15, and the width of both the strip-shaped seat 17 and the limiting seat 13 is greater than the width of the strip-shaped groove 15. The strip-shaped seat 17 is connected to the sliding seat 14. Specifically, each strip-shaped seat 17 is provided with a strip-shaped opening 18, and a fastener, which is a bolt, is provided inside the strip-shaped opening 18 to connect with the sliding seat 14. During installation, the bolt is placed in the strip-shaped opening 18, and then the bolt is installed on the sliding seat 14. It should be noted that the strip-shaped opening 18 not only secures the strip-shaped seat 17, but also allows the position of each strip-shaped seat 17 to be adjusted while the bolt is loosened, which can calibrate the clamping error.

[0027] After the strip seat 17 is connected to the sliding seat 14, the strip seat 17 and the limiting seat 13 clamp the edge of the strip groove 15 in the middle, and the strip seat 17 and the limiting seat 13 are respectively in clearance fit with the edge of the strip groove 15, allowing the strip seat 17 and the limiting seat 13 to slide along the strip groove 15. Specifically, the clamping process is as follows: when the turntable 10 rotates in the forward direction, the arc-shaped slide 11 can drive each slider 12 to retract simultaneously; when the turntable 10 rotates in the reverse direction, the arc-shaped slide 11 can drive each slider 12 to open simultaneously.

[0028] Furthermore, such as Figure 1 and Figure 2 As shown, a mounting flange 1 is coaxially provided at the end of the support sleeve 2 away from the mounting cover 16. Multiple reinforcing parts (labeled in the figure) are provided between the mounting flange 1 and the support sleeve 2, such as... Figure 6 As shown, mount flange 1 and lathe (e.g.) Figure 6The shaft is connected at the point indicated by the middle arrow C, allowing the machine tool to drive the fixture to rotate. The most important aspect of this application is that the fixture can be continuously clamped under rotation without the need for manual clamping.

[0029] like Figure 1 As shown, a slip ring 3 is coaxially mounted on the support sleeve 2. Both the support sleeve 2 and the support tube 5 have through holes 4. Since both the support sleeve 2 and the support tube 5 are hollow, the through holes 4 allow them to communicate with the outside. These holes are used for threading wires or installing pipes. The slip ring 3 here is a pneumatic slip ring, an electric slip ring, or a hydraulic slip ring. Correspondingly, the telescopic mechanism 7 is a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder.

[0030] First, when the slip ring 3 is a pneumatic slip ring, the telescopic mechanism 7 is a cylinder. At this time, the rotor of the slip ring 3 is fixed to the support sleeve 2, and the stator of the slip ring 3 is connected to the air supply device through a pipe. The pipe connected to the stator is placed in the support sleeve 2 through the through hole 4, and then passes out through the through hole 4 on the support pipe 5 to connect with the cylinder.

[0031] Secondly, when the slip ring 3 is an electric slip ring, the telescopic mechanism 7 is an electric cylinder. At this time, the rotor of the slip ring 3 is fixed to the support sleeve 2, and the stator of the electric slip ring is connected to the external power supply through the wire. The wire connected to the stator is placed in the support sleeve 2 through the through hole 4, and then passes out through the through hole 4 on the support tube 5 to connect with the electric cylinder.

[0032] Finally, when slip ring 3 is an oil slip ring, telescopic mechanism 7 is a hydraulic cylinder. At this time, the rotor of slip ring 3 is fixed to support sleeve 2, and the stator of slip ring 3 is connected to hydraulic station through oil pipe. The oil pipe connected to the stator is placed in support sleeve 2 through through hole 4, and then passes out through through hole 4 on support pipe 5 to connect with hydraulic cylinder.

[0033] However, regardless of whether the telescopic mechanism 7 is a pneumatic cylinder, electric cylinder, or hydraulic cylinder, the stator of the slip ring 3 needs to be fixed, such as... Figure 6 As shown, the stator of the slip ring 3 is detachably mounted on the stator bracket 6, which is installed on the machine tool. This allows the machine tool to both drive the fixture to rotate and keep the fixture clamped continuously.

[0034] In summary, the fixture proposed in this application can clamp the workpiece by means of the telescopic mechanism 7, with a large clamping force and a long holding time. Moreover, each strip seat 17 is equipped with a locking block 19 at one end near the center of the mounting cover 16, so that the locking block 19 can clamp the workpiece.

[0035] Based on the above embodiments, it should be further explained that the fixture proposed in this application is also easy to maintain because the mounting cover 16 and the support plate 9 are easy to disassemble. At this time, the telescopic mechanism 7 can be fully exposed, which is convenient for maintenance of the telescopic mechanism. At the same time, the support plate and the support sleeve are easy to disassemble. At this time, the slip ring 3 can be removed from the end of the support sleeve 2, which is convenient for replacing the slip ring 3 or maintaining it.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mechanical component machining fixture for a lathe, comprising a support sleeve (2) and a support disc (9), the center of the support disc (9) being provided with a mounting hole (8), characterized in that, The support sleeve (2) is coaxially provided with a support pipe (5) at one end, a mounting hole (8) is sleeved on the support pipe (5), and a support disc (9) is detachably connected to the end of the support sleeve (2); The support pipe (5) is coaxially and rotatably provided with a rotating disc (10) at the end, a certain space is provided between the rotating disc (10) and the support disc (9), an extension mechanism (7) is arranged in the space, one end of the extension mechanism (7) is rotatably connected to the edge of the rotating disc (10), the other end of the extension mechanism (7) is rotatably connected to the edge of the support disc (9), and the rotating disc (10) rotates around the support pipe (5) when the extension mechanism (7) is extended or retracted; The rotating disc (10) is provided with a plurality of arc-shaped sliding grooves (11) symmetrically distributed on the surface, each arc-shaped sliding groove (11) is movably provided with a sliding block (12), and each sliding block (12) is provided with a clamping jaw at the end; the support disc (9) is coaxially and detachably provided with a mounting cover body (16) for covering the rotating disc (10) therein, the mounting cover body (16) is provided with a strip-shaped groove (15) corresponding to the arc-shaped sliding groove (11) on the end face, and the clamping jaw is slidably arranged in each strip-shaped groove (15); A slip ring (3) is coaxially arranged on the support sleeve (2), and a through hole (4) is arranged on the surface of the support sleeve (2) and the support pipe (5).

2. The mechanical part machining jig for a lathe according to claim 1, wherein A mounting flange (1) is coaxially arranged at the end of the support sleeve (2) away from the mounting cover body (16), and a plurality of reinforcing portions are arranged between the mounting flange (1) and the support sleeve (2).

3. The mechanical part machining jig for a lathe according to claim 1, wherein The stator of the slip ring (3) is detachably arranged on the stator support (6).

4. The mechanical part machining jig for a lathe according to claim 1, wherein The support pipe (5) is coaxially provided with a mounting shaft (20) at the end, the rotating disc (10) is provided with a bearing hole (21) at the middle, the bearing hole (21) is sleeved on the mounting shaft (20), and the two are connected through a bearing.

5. The mechanical part machining jig for a lathe according to claim 1, wherein The clamping jaw comprises a limiting seat (13) connected to the end of the sliding block (12), and the limiting seat (13) is arranged at the side of the inner cavity of the mounting cover body (16); A sliding seat (14) is movably arranged in each strip-shaped groove (15), and the sliding seat (14) is connected with the limiting seat (13); A strip-shaped seat (17) is arranged at the side of each strip-shaped groove (15), the strip-shaped seat (17) is connected with the sliding seat (14), and the widths of the strip-shaped seat (17) and the limiting seat (13) are greater than the width of the strip-shaped groove (15).

6. The mechanical part machining jig for a lathe according to claim 5, wherein A clamping block (19) is arranged at the end of each strip-shaped seat (17) close to the center of the mounting cover body (16).

7. The mechanical part machining jig for a lathe according to claim 6, wherein A strip-shaped opening (18) is arranged on each strip-shaped seat (17), and a fastener connected with the sliding seat (14) is arranged in the strip-shaped opening (18).

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