Clamping device for grinding outer circle of hydraulic valve element

Abstract

The utility model provides a clamping device for grinding the outer circle of a hydraulic valve core, which comprises a supporting base, a sliding groove is arranged above the supporting base, a sliding seat is arranged above the sliding groove, a motor is arranged on one side of the sliding seat, a limiting base is arranged on the other side of the sliding groove, and the limiting base is arranged on the supporting base. A grinding head is installed on the side, close to the sliding base, of the limiting base, a polishing disc is installed in the middle of the rear side of the supporting base, a protective shell is installed on the side, close to the limiting base, of the sliding base, an adjusting piece is installed in the protective shell, and a clamping piece is installed on the side, away from the sliding base, of the protective shell. The hydraulic valve element clamping device has the advantages that the clamping effect of a hydraulic valve element machined part is improved, the exposed area of the to-be-machined face of the hydraulic valve element machined part is increased, and the situation of secondary clamping is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a clamping device for hydraulic valve core external circle grinding processing belongs to hydraulic valve core processing field. BACKGROUND

[0002] The valve core is a kind of hydraulic valve parts, which realizes the opening and closing and reversing of oil circuit by the rotary motion of valve core relative to valve body, wherein the rotation of rotary valve can rely on manual or be driven by stroke stopper, or be driven by a special driving device, in the prior art, when hydraulic valve core external circle grinding processing, the shoulder shaft protruding in the middle of the multiple shapes of hydraulic valve core leads to the need for twice processing of hydraulic valve core external circle surface, twice clamping of parts can bring clamping error and further bring cylindricity error, and the clamping position of hydraulic valve core is relatively small, when grinding head works, the rotation amplitude of grinding head is easy to drive the position of hydraulic valve core to move, thereby affecting the product quality of hydraulic valve core workpiece, and reducing the production speed of hydraulic valve core workpiece, so a clamping device for hydraulic valve core external circle grinding processing capable of reducing position deviation during grinding process of hydraulic valve core workpiece needs to be designed. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a clamping device for hydraulic valve core external circle grinding processing to solve the problems raised in the background art, which improves the clamping effect of hydraulic valve core workpiece, increases the exposed area of hydraulic valve core workpiece to be processed, and reduces the situation of twice clamping.

[0004] To achieve the above object, the utility model is implemented by the following technical scheme: a clamping device for hydraulic valve core external circle grinding processing, including support base, the support base is installed with sliding groove above, the sliding groove is installed with sliding seat above, the sliding seat is installed with motor on one side, the sliding groove is installed with limit base on the other side, the limit base is installed with grinding head on the side close to the sliding seat, the support base is installed with polishing disc in the middle of rear side, the sliding seat is installed with protective shell on the side close to the limit base, the protective shell is installed with adjusting part inside, the protective shell is installed with clamping part on the side away from the sliding seat.

[0005] Further, the clamping part includes a fixed ring, three screw holes are evenly formed on the fixed ring, three adjusting screws are evenly installed on the fixed ring, the three adjusting screws are respectively installed in the three screw holes, and a clamping plate is installed at one end of the screw hole inside the fixed ring.

[0006] Further, the three clamping plates are installed with protective pads at one end away from the adjusting screw, the adjusting screw is installed with an adjusting block at one end away from the clamping plate, and a fixed nut is installed on the adjusting screw.

[0007] Further, the fixed nut is located between the fixed ring and the adjusting block, and the clamping plate is in the shape of a circular arc in cross section.

[0008] Further, the adjusting member comprises a supporting bottom plate, which is installed on the side of the protective shell away from the sliding base, and a telescopic screw rod is installed on the side of the supporting bottom plate close to the protective shell, a threaded sleeve is installed in the protective shell, the telescopic screw rod is inserted into the threaded sleeve, and two fixed bases are symmetrically installed on the inner wall of the protective shell, and the two ends of the threaded sleeve are inserted into the two fixed bases.

[0009] Further, a first bevel gear is installed on the threaded sleeve, a rotating handle is installed on the top of the protective shell, one end of the rotating handle is inserted into the protective shell, a round rod is installed on the bottom of the rotating handle, a second bevel gear is installed on the end of the round rod away from the rotating handle, and the second bevel gear and the first bevel gear are meshed with each other.

[0010] The hydraulic valve core outer circle grinding machining clamping device has the advantages that the rotating adjusting block drives the adjusting screw rod to rotate on the fixed ring, thereby adjusting the position of the clamping plate, the clamping plate is close to the outer wall of the hydraulic valve core machining piece, the hydraulic valve core machining piece is clamped, the stability of the hydraulic valve core machining piece in the grinding process is improved through three-point clamping of the three clamping plates.

[0011] The side of the clamping plate close to the hydraulic valve core machining piece is provided with a protective pad made of rubber, the protective pad can be deformed to completely adhere to the outer wall of the hydraulic valve core machining piece through the extrusion force of the clamping plate when the clamping plate clamps the hydraulic valve core machining piece, the clamping effect of the clamping plate is improved, the friction between the hydraulic valve core machining piece and the clamping plate is increased, and the probability of position deviation of the hydraulic valve core machining piece in the grinding process is reduced.

[0012] The rotating handle drives the round rod and the second bevel gear to rotate, the second bevel gear drives the first bevel gear to rotate, the threaded sleeve drives the telescopic screw rod to rotate outwards or inwards, the supporting bottom plate is adjusted in position, the bottom of the hydraulic valve core machining piece is supported by the supporting bottom plate, the clamping position of the hydraulic valve core machining piece is fixed, and the hydraulic valve core machining piece is prevented from moving inwards when being extruded in the grinding process.

[0013] Through cooperation of the clamping plate, the protective pad and the supporting bottom plate, the hydraulic valve core workpiece can be clamped, and meanwhile, the clamping stability is improved, the operation area during hydraulic valve core machining is increased, the situation of secondary clamping is reduced, the surface to be machined of the hydraulic valve core workpiece is exposed in the machining range of the grinding head, the cylindricity error caused by twice clamping is reduced, and the quality and machining efficiency are improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, read in conjunction with the accompanying drawings:

[0015] Figure 1 It is a whole structure schematic view of the clamping device for hydraulic valve core cylindrical grinding machining of the present application;

[0016] Figure 2 It is a whole structure schematic view of the fixed ring in the clamping device for hydraulic valve core cylindrical grinding machining of the present application;

[0017] Figure 3 It is a front view of the fixed ring in the clamping device for hydraulic valve core cylindrical grinding machining of the present application;

[0018] Figure 4 It is an internal structure schematic view of the protective shell in the clamping device for hydraulic valve core cylindrical grinding machining of the present application;

[0019] In the figure: 1, supporting base; 2, grinding head; 3, polishing disc; 4, sliding groove; 5, sliding seat; 6, motor; 7, limiting base; 8, fixed ring; 9, protective shell; 10, screw hole; 11, clamping plate; 12, protective pad; 13, adjusting screw; 14, adjusting block; 15, fixed nut; 16, supporting bottom plate; 17, telescopic screw; 18, threaded sleeve; 19, fixed base; 20, first bevel gear; 21, second bevel gear; 22, rotating handle; 23, round rod. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in conjunction with specific embodiments.

[0021] Please refer to Figures 1-4The utility model provides a technical scheme: a clamping device for hydraulic valve core external circle grinding processing, including support base 1, the upper installation of support base 1 has sliding slot 4, the upper installation of sliding slot 4 has slide 5, one side of slide 5 is installed with motor 6, the other side of sliding slot 4 is installed with limit base 7, the side close to slide 5 of limit base 7 is installed with grinding head 2, the rear middle part of support base 1 is installed with polishing disc 3, the side close to limit base 7 of slide 5 is installed with protective shell 9, the inside installation of protective shell 9 has adjusting part, the side away from slide 5 of protective shell 9 is installed with clamping piece, through the cooperation of the sliding slot 4 and slide 5 set up, the position of the hydraulic valve core workpiece that slide 5 drives fixedly completes is moved, make grinding head 2 to hydraulic valve core workpiece and process.

[0022] Please refer to Figure 2 And Figure 3 , clamping piece includes fixed ring 8, three screw holes 10 are evenly formed on fixed ring 8, three adjusting screws 13 are evenly installed on fixed ring 8, three adjusting screws 13 are installed in three screw holes 10 respectively, clamping plate 11 is installed at one end of screw hole 10 in fixed ring 8, three clamping plates 11 are installed with protective pad 12 away from the end of adjusting screw 13, adjusting block 14 is installed at the end of adjusting screw 13 away from clamping plate 11, fixed nut 15 is installed on adjusting screw 13, fixed nut 15 is located between fixed ring 8 and adjusting block 14, the cross section of clamping plate 11 is circular arc, through the cooperation of the clamping plate 11 and protective pad 12 set up, the periphery of workpiece can be clamped, and the protective pad 12 is made of rubber material and can be deformed, which can better cover the hydraulic valve core workpiece, to avoid the hydraulic valve core workpiece moving position during grinding.

[0023] Please refer to Figure 4 , adjusting part includes supporting bottom plate 16, supporting bottom plate 16 is installed on the side of protective shell 9 away from slide 5, telescopic screw 17 is installed on the side close to protective shell 9 of supporting bottom plate 16, thread sleeve 18 is installed in protective shell 9, telescopic screw 17 is inserted in thread sleeve 18, two fixed bases 19 are symmetrically installed on the inner wall of protective shell 9, two ends of thread sleeve 18 are inserted in two fixed bases 19 respectively, first bevel gear 20 is installed on thread sleeve 18, rotating handle 22 is installed on the top of protective shell 9, one end of rotating handle 22 is inserted in protective shell 9, round rod 23 is installed at the bottom of rotating handle 22, second bevel gear 21 is installed at the end of round rod 23 away from rotating handle 22, second bevel gear 21 and first bevel gear 20 are engaged with each other, through the cooperation of second bevel gear 21 and first bevel gear 20 set up, when rotating rotating handle 22, thread sleeve 18 can be driven to rotate, so that the position of telescopic screw 17 is adjusted, the bottom position of workpiece is limited by supporting bottom plate 16, to avoid the workpiece moving position during grinding.

[0024] Specific implementation: by rotating the adjusting block 14 to drive the adjusting screw 13 to rotate on the fixed ring 8, the position of the clamping plate 11 is adjusted, so that the clamping plate 11 is close to the outer wall of the hydraulic valve core workpiece, and the hydraulic valve core workpiece is clamped, and the stability of the hydraulic valve core workpiece in the grinding process is improved through the three-point clamping of the three clamping plates 11. The side of the clamping plate 11 close to the hydraulic valve core workpiece is provided with a protective pad 12, which is made of rubber. When the clamping plate 11 clamps the hydraulic valve core workpiece, the protective pad 12 can be deformed to completely fit the outer wall of the hydraulic valve core workpiece through the extrusion force of the clamping plate 11, thereby improving the clamping effect of the clamping plate 11. The protective pad 12 can increase the friction between the hydraulic valve core workpiece and the clamping plate 11, and reduce the probability of position deviation of the hydraulic valve core workpiece in the grinding process. By rotating the handle 22, the circular rod 23 drives the second bevel gear 21 to rotate, which drives the first bevel gear 20 to rotate, so that the threaded sleeve 18 drives the telescopic screw 17 to rotate outward or inward, and drives the supporting bottom plate 16 to adjust the position, so that the supporting bottom plate 16 supports the bottom of the hydraulic valve core workpiece, and fixes the clamping part of the hydraulic valve core workpiece, avoiding the hydraulic valve core workpiece moving inward when extruded in the grinding process. Through the cooperation of the clamping plate 11, the protective pad 12 and the supporting bottom plate 16, the hydraulic valve core workpiece can be clamped, and at the same time, when the clamping part of the hydraulic valve core workpiece is small, the friction of the protective pad 12 and the limiting effect of the supporting bottom plate 16 on the bottom position of the hydraulic valve core workpiece can also be used to improve the stability of clamping, increase the operation area of the hydraulic valve core workpiece, reduce the need for secondary clamping, expose the machined surface of the hydraulic valve core workpiece to the machining range of the grinding head 2, reduce the cylindricity error caused by double clamping, improve the quality and processing efficiency.

[0025] Although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A clamping device for hydraulic spool outer circle grinding processing, comprising a supporting base (1), characterized in that: The support base (1) is provided with a sliding groove (4) above it, a sliding seat (5) above the sliding groove (4), a motor (6) on one side of the sliding seat (5), a limiting base (7) on the other side of the sliding groove (4), a grinding head (2) on the side of the limiting base (7) close to the sliding seat (5), a polishing disc (3) on the middle of the back side of the support base (1), a protective shell (9) on the side of the sliding seat (5) close to the limiting base (7), an adjusting part inside the protective shell (9), and a clamping part on the side of the protective shell (9) away from the sliding seat (5).

2. The hydraulic spool valve core outer circle grinding clamping device according to claim 1, characterized in that: The clamping part comprises a fixed ring (8) provided with three screw holes (10) evenly on it, three adjusting screws (13) evenly installed on the fixed ring (8), and a clamping plate (11) installed at one end of the screw hole (10) inside the fixed ring (8).

3. The hydraulic spool valve core outer circle grinding clamping device according to claim 2, characterized in that: The clamping plate (11) is provided with a protective pad (12) at one end away from the adjusting screw (13), the adjusting screw (13) is provided with an adjusting block (14) at one end away from the clamping plate (11), and the adjusting screw (13) is provided with a fixed nut (15).

4. The hydraulic spool outer circle grinding clamping device according to claim 3, characterized in that: The fixed nut (15) is located between the fixed ring (8) and the adjusting block (14), and the clamping plate (11) is arc-shaped in cross section.

5. The hydraulic spool valve core outer circle grinding clamping device according to claim 1, characterized in that: The adjusting part comprises a supporting bottom plate (16) installed on the side of the protective shell (9) away from the sliding seat (5), a telescopic screw (17) installed on the side of the supporting bottom plate (16) close to the protective shell (9), a threaded sleeve (18) installed inside the protective shell (9), the telescopic screw (17) inserted into the threaded sleeve (18), two fixed bases (19) symmetrically installed on the inner wall of the protective shell (9), and the threaded sleeve (18) inserted into the two fixed bases (19) at both ends.

6. The hydraulic spool outer circle grinding clamping device according to claim 5, characterized in that: The threaded sleeve (18) is provided with a first bevel gear (20), the protective shell (9) is provided with a rotating handle (22) on the top, one end of the rotating handle (22) is inserted into the protective shell (9), the rotating handle (22) is provided with a round rod (23) on the bottom, the round rod (23) is provided with a second bevel gear (21) at one end away from the rotating handle (22), and the second bevel gear (21) and the first bevel gear (20) are meshed with each other.

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