A finely adjustable hydraulic valve core outer diameter grinding and stabilizing clamping fixture

Abstract

A finely adjustable hydraulic valve core outer cylindrical grinding and stabilizing clamping fixture is disclosed. This utility model relates to the field of valve core processing technology. A rotating rod is rotatably mounted in a base via a bearing. A rotating disk is fixedly sleeved on the rotating rod. Three arc-shaped guide grooves on the rotating disk each contain a guide block, which is fixedly connected to a slider. A worm gear is fixedly sleeved on the rotating rod below the rotating disk. A worm gear meshing with the worm gear is rotatably inserted into the base via a bearing. An adjustment handle is fixedly mounted on the front end of the worm gear after passing through the base. A lifting block is located above the first clamping block, and a second clamping block is mounted on the lifting block. A height adjustment mechanism connected to the lifting block is provided on the base. This fixture not only allows for clamping the hydraulic valve core at two different heights, significantly shortening the suspension length of the valve core, but also allows the clamping height to be adjusted according to the length of the valve core to ensure clamping stability.

Description

Technical Field

[0001] This utility model relates to the field of valve core processing technology, specifically to a finely adjustable hydraulic valve core outer diameter grinding and stabilizing clamping fixture. Background Technology

[0002] In the grinding process of the outer diameter of hydraulic valve core, traditional clamping fixtures usually adopt a single-height clamping method. For hydraulic valve cores with large lengths, the excessively long cantilever can easily cause bending vibration during the processing. This not only affects the grinding accuracy, but may also cause the valve core to shift or deform during grinding due to insufficient effective clamping length. As a result, the existing clamping fixtures are slightly insufficient in clamping stability for slender hydraulic valve cores. Therefore, there is an urgent need for a finely adjustable hydraulic valve core outer diameter grinding stability clamping fixture. Utility Model Content

[0003] The purpose of this utility model is to address the defects and shortcomings of the existing technology by providing a reasonably designed, finely adjustable hydraulic valve core outer diameter grinding and stabilizing clamping fixture to solve the above-mentioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a base, a slider and a first clamping block, and the slider is slidably arranged in three grooves opened on the upper part of the base, and the first clamping block is fixedly arranged on the slider.

[0005] It also includes: a rotating rod, which is rotatably mounted in the base via bearings, a rotating disk fixedly mounted on the rotating rod, and guide blocks movably mounted in three arc-shaped guide grooves on the rotating disk, with the guide blocks fixedly connected to the slider; a worm gear, which is fixedly mounted on the rotating rod below the rotating disk, and a worm gear meshing with the worm gear is rotatably inserted in the base via bearings, with an adjustment handle fixedly mounted at the front end of the worm gear after passing through the base; and three lifting blocks, each located above a first-order clamping block, with a second-order clamping block on each lifting block, and a height adjustment mechanism connected to the lifting blocks on the base.

[0006] Furthermore, the height adjustment mechanism includes: a fixed ring, which is fixedly mounted on the upper part of the base; a rotating ring is rotatably mounted inside the ring sidewall of the fixed ring via a bearing; a control rod is fixedly mounted on the outer ring wall of the rotating ring; one end of the control rod passes through an adjustment groove opened on the outer ring wall of the fixed ring and is located outside the fixed ring; and three linkage rods, which are rotatably inserted into the first clamping block via bearings; a drive rod is movably inserted into the linkage rod; one end of the drive rod is rotatably inserted into the fixed ring via a bearing; and a first clamping block is fixedly sleeved on the linkage rod. A bevel gear; six movable rods, each movably mounted within one of the three clamping blocks at positions on either side of the linkage rod, with both ends of the movable rod connected to a connecting rod via shafts and bearings, the upper end of the connecting rod hinged to the lifting block; six threaded rods, each threadedly mounted within one of the six movable rods, and rotatably mounted within the clamping block via bearings, with one end of the threaded rod fixedly fitted with a second bevel gear meshing with the first bevel gear, and one end of the drive rod fixedly fitted with a third bevel gear meshing with the bevel gear ring.

[0007] Furthermore, guide bars are movably installed in the four guide openings on the movable rod, and the guide bars are fixedly installed in the first clamping block.

[0008] Furthermore, a control handle is movably sleeved on the control rod, and a limit plate is movably installed inside the control handle. The limit plate is fixedly connected to one end of the control rod, and a spring is movably sleeved on the control rod. The two ends of the spring are fixedly connected to the limit plate and the inner wall of the control handle, respectively. One end of the control handle is set to abut against the outer ring wall of the fixed ring.

[0009] Furthermore, a rubber ring is fixedly provided at one end of the control handle, and the rubber ring is arranged to abut against the outer ring wall of the fixed ring.

[0010] Furthermore, the second clamping block is movably inserted on the lifting block, and an adjusting screw is rotatably inserted on the lifting block via a bearing, with one end of the adjusting screw being rotatably inserted into the second clamping block via a thread.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the adjustable hydraulic valve core outer circle grinding and stabilizing clamping fixture described in this utility model can not only achieve two different height states for clamping the hydraulic valve core, greatly shortening the suspension length of the valve core, but also the clamping height can be adjusted according to the length of the valve core to ensure the stability of clamping. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is an exploded view of the parts of this utility model, including the slider, rotating rod, rotating disk, guide block, worm gear, worm, and adjusting handle.

[0014] Figure 3 This is a cross-sectional view of the fixing ring in this utility model.

[0015] Figure 4 yes Figure 3 Enlarged view of part A in the image.

[0016] Figure 5 This is an exploded view of the parts of the No. 1 clamping block, the lifting block, the No. 2 clamping block, the drive rod, and the adjusting screw in this utility model.

[0017] Figure 6 yes Figure 5 Enlarged view of part B in the image.

[0018] Explanation of reference numerals in the attached drawings: Base 1, Slider 2, Clamping Block 1 3, Slide 4, Rotating Rod 5, Rotating Disc 6, Arc-shaped Guide Groove 6-1, Guide Block 7, Worm Gear 8, Worm 9, Adjusting Handle 10, Lifting Block 11, Clamping Block 2 12, Height Adjustment Mechanism 13, Fixed Ring 13-1, Rotating Ring 13-2, Control Rod 13-3, Adjusting Groove 13-4, Linkage Rod 13-5, Drive Rod 13-6, Bevel Gear 13-7, Moving Rod 13-8, Connecting Rod 13-9, Threaded Rod 13-10, Bevel Gear 13-11, Bevel Gear 13-12, Bevel Gear Ring 13-13, Guide Port 14, Guide Strip 15, Control Handle 16, Limiting Plate 17, Spring 18, Rubber Ring 19, Adjusting Screw 20. Detailed Implementation

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] like Figures 1-6 As shown, the specific embodiment adopts the following technical solution: it includes a base 1, a slider 2 and a clamping block 3. The slider 2 is slidably arranged in the three sliding grooves 4 opened on the upper part of the base 1, and the clamping block 3 is fixedly arranged on the slider 2.

[0021] It also includes:

[0022] Rotating rod 5, the rotating rod 5 is rotatably mounted in base 1 via bearing, rotating disk 6 is fixedly sleeved on rotating rod 5, and guide blocks 7 are movably mounted in three arc-shaped guide grooves 6-1 opened on rotating disk 6, and guide blocks 7 are fixedly connected to slider 2;

[0023] The worm gear 8 is fixedly sleeved on the rotating rod 5 at a position below the rotating disk 6. The worm 9, which meshes with the worm gear 8, is rotatably inserted into the base 1 through the bearing. The front end of the worm 9 passes through the base 1 and is fixedly provided with an adjustment handle 10.

[0024] Lifting blocks 11, there are three lifting blocks 11, which are respectively set above the three first clamping blocks 3. The lifting blocks 11 are equipped with second clamping blocks 12. The base 1 is equipped with a height adjustment mechanism 13 connected to the lifting blocks 11. The second clamping blocks 12 are movably inserted into the lifting blocks 11. The lifting blocks 11 are rotatably inserted with an adjustment screw 20 through a bearing, and one end of the adjustment screw 20 is rotatably inserted into the second clamping block 12 through a thread. The position of the second clamping block 12 can be adjusted by rotating the adjustment screw 20, so as to realize the clamping adaptation of the second clamping block 12 to different shaft core diameters.

[0025] The height adjustment mechanism 13 includes:

[0026] A fixed ring 13-1 is fixedly mounted on the upper part of the base 1. A rotating ring 13-2 is rotatably mounted inside the ring side wall of the fixed ring 13-1 via a bearing. A control rod 13-3 is fixedly mounted on the outer ring wall of the rotating ring 13-2. One end of the control rod 13-3 passes through an adjustment groove 13-4 opened on the outer ring wall of the fixed ring 13-1 and is located outside the fixed ring 13-1. A control handle 16 is movably sleeved on the control rod 13-3. A limit plate 17 is movably mounted inside the control handle 16. The limit plate 17 is fixed to one end of the control rod 13-3. A spring 18 is movably sleeved on the control lever 13-3. The two ends of the spring 18 are fixedly connected to the limiting plate 17 and the inner wall of the control handle 16, respectively. A rubber ring 19 is fixedly installed on one end of the control handle 16, and the rubber ring 19 abuts against the outer ring wall of the fixed ring 13-1. The pushing force applied by the spring 18 to the control handle 16 can make the rubber ring 19 squeezed between the control handle 16 and the fixed ring 13-1, and generate a large friction force, so as to avoid the control lever 13-3 from shifting due to vibration during the grinding process of the valve core.

[0027] Linkage rod 13-5, there are three linkage rods 13-5, which are respectively rotatably inserted into the first clamping block 3 through bearings. A drive rod 13-6 is movably inserted into the linkage rod 13-5. One end of the drive rod 13-6 is rotatably inserted into the fixed ring 13-1 through a bearing. A first bevel gear 13-7 is fixedly sleeved on the linkage rod 13-5.

[0028] There are six movable rods 13-8, which are movably installed in the three clamping blocks 3 on both sides of the linkage rod 13-5. Each of the four guide openings 14 on the movable rod 13-8 is equipped with a guide bar 15, which is fixedly installed in the clamping block 3. The guide bar 15 can provide auxiliary guidance for the movable rod 13-8, thereby effectively improving the stability of the movable rod 13-8 in the clamping block 3. Both ends of the movable rod 13-8 are connected to the connecting rod 13-9 through shafts and bearings. The upper end of the connecting rod 13-9 is hinged to the lifting block 11.

[0029] Six threaded rods 13-10 are respectively threaded and rotated through six movable rods 13-8. The threaded rods 13-10 are rotatably mounted in the first clamping block 3 via bearings. One end of the threaded rod 13-10 is fixedly fitted with a second bevel gear 13-11 that meshes with the first bevel gear 13-7. One end of the drive rod 13-6 is fixedly fitted with a third bevel gear 13-12 that meshes with the bevel gear ring 13-13. The height adjustment mechanism 13 can realize the synchronous adjustment of the height of the three lifting blocks 11, so that the three second clamping blocks 12 can be located at the same height to ensure the stability of the second clamping blocks 12 in clamping the valve core.

[0030] When using this utility model, the valve core is placed in the middle of the upper part of the base 1, and then the adjustment handle 10 is rotated. The adjustment handle 10 drives the worm 9 to rotate, and the worm 9 and the worm wheel 8 mesh together, so that the worm wheel 8 drives the rotating rod 5 to rotate. The rotating rod 5 drives the rotating disk 6 to rotate. At this time, the guide block 7 moves in the arc-shaped guide groove 6-1, so that the guide block 7 drives the slider 2 to move. The slider 2 drives the first clamping block 3 to move towards the shaft core. With the cooperation of the connecting rod 13-9 and the lifting block 11, the second clamping block 12 moves towards the shaft core, so as to achieve the clamping of the valve core at two different heights by the first clamping block 3 and the second clamping block 12, in order to ensure the clamping stability of the valve core.

[0031] If the clamping height of the second clamping block 12 needs to be changed according to the length of the valve core, the control handle 16 can be pulled away from the fixed ring 13-1 to disengage the rubber ring 19 from the fixed ring 13-1. Then, the control handle 16 can be moved. The control handle 16 drives the rotating ring 13-2 to rotate via the control rod 13-3. The rotating ring 13-2 drives the bevel gear ring 13-13 to rotate. The bevel gear ring 13-13 drives the three third bevel gears 13-12 to rotate synchronously. The third bevel gears 13-12 drive the drive rod 13-6 to rotate. The moving rod 13-6 drives the linkage rod 13-5 to rotate, and the linkage rod 13-5 drives the first bevel gear 13-7 to rotate. By utilizing the meshing of the first bevel gear 13-7 and the second bevel gear 13-11, the threaded rods 13-10 on both sides of the linkage rod 13-5 can rotate synchronously in opposite directions. At this time, the two moving rods 13-8 in the first clamping block 3 can move synchronously in opposite directions, causing the connecting rod 13-9 to flip, changing the height of the lifting block 11 and the second clamping block 12, so as to realize the clamping adaptation of the second clamping block 12 to the valve core at different heights.

[0032] Compared with the prior art, the beneficial effects of this utility model are:

[0033] Through the meshing transmission of worm 9 and worm wheel 8, and the cooperation of rotating disk 6 and guide block 7, three clamping blocks 3 and 12 can be driven to move towards the valve core in a synchronous manner, so as to clamp the valve core at two different heights. This dual-height two-point support structure can effectively shorten the suspension length of the valve core, disperse the radial grinding force, avoid slippage and vibration of long valve cores or slender rod-shaped valve cores during processing, and significantly improve clamping stability.

[0034] The height adjustment mechanism 13 can drive the three lifting blocks 11 to adjust the height synchronously, ensuring that the three No. 2 clamping blocks 12 are always at the same height. This can avoid the tilting of the valve core axis caused by the clamping height deviation, effectively control the radial runout and perpendicularity error, and ensure the dimensional accuracy and cylindricity consistency of the grinding process.

[0035] When adjusting the height of the second clamping block 12, simply pull the control handle 16 to disengage the rubber ring 19 from the fixed ring 13-1. Then, the height can be adjusted by moving the control lever 13-3 to rotate the rotating ring 13-2. The operation is simple and efficient. After adjustment, the spring 18 pushes the rubber ring 19 to tightly contact the fixed ring 13-1. The friction generated can effectively prevent the control lever 13-3 from shifting due to processing vibration, ensuring that the clamping state is stable and does not loosen after the height adjustment.

[0036] The second clamping block 12 can be independently adjusted in position by adjusting the screw 20 to adapt to the clamping requirements of valve cores with different diameters. At the same time, combined with the height-adjustable function of dual-height clamping, it can adapt to the processing requirements of valve cores of different lengths and structures.

[0037] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A finely adjustable hydraulic valve core outer diameter grinding and stabilizing clamping fixture, comprising a base (1), a slider (2), and a first clamping block (3), wherein the slider (2) is slidably disposed in three sliding grooves (4) opened on the upper part of the base (1), and the first clamping block (3) is fixedly disposed on the slider (2); characterized in that, It also includes: a rotating rod (5), which is rotatably mounted in the base (1) via a bearing, and a rotating disk (6) is fixedly mounted on the rotating rod (5). Three arc-shaped guide grooves (6-1) on the rotating disk (6) are movably mounted with guide blocks (7), and the guide blocks (7) are fixedly connected to the slider (2); a worm wheel (8), which is fixedly mounted on the rotating rod (5) at a position below the rotating disk (6). A worm (9) that meshes with the worm wheel (8) is inserted into the base (1) via a bearing. An adjustment handle (10) is fixedly mounted on the front end of the worm (9) after passing through the base (1); and three lifting blocks (11), which are respectively mounted above three clamping blocks (3). A second clamping block (12) is mounted on the lifting block (11), and a height adjustment mechanism (13) connected to the lifting block (11) is mounted on the base (1).

2. The adjustable hydraulic valve core outer diameter grinding and stabilizing clamping fixture according to claim 1, characterized in that: The height adjustment mechanism (13) includes: a fixed ring (13-1), which is fixedly installed on the upper part of the base (1). A rotating ring (13-2) is rotatably installed inside the ring side wall of the fixed ring (13-1) via a bearing. A control rod (13-3) is fixedly installed on the outer ring wall of the rotating ring (13-2). One end of the control rod (13-3) passes through the adjustment groove (13-4) opened on the outer ring wall of the fixed ring (13-1) and is located outside the fixed ring (13-1); and three linkage rods (13-5), which are respectively rotatably inserted into the first clamping block (3) via bearings. A drive rod (13-6) is movably inserted into the linkage rod (13-5). One end of the drive rod (13-6) is rotatably inserted into the fixed ring (13-1) via a bearing. A first bevel gear (13-6) is fixedly sleeved on the linkage rod (13-5). -7); Moving rods (13-8), there are six moving rods (13-8), which are respectively movably set in the three No. 1 clamping blocks (3) at the positions on both sides of the linkage rod (13-5). Both ends of the moving rods (13-8) are connected to the connecting rods (13-9) through shafts and bearings. The upper end of the connecting rods (13-9) is hinged to the lifting block (11); Threaded rods (13-10), there are six threaded rods (13-10), which are respectively threaded and rotated in the six moving rods (13-8). The threaded rods (13-10) are rotated in the No. 1 clamping block (3) through bearings. One end of the threaded rods (13-10) is fixedly sleeved with a No. 2 bevel gear (13-11) that meshes with the No. 1 bevel gear (13-7). One end of the drive rod (13-6) is fixedly sleeved with a No. 3 bevel gear (13-12) that meshes with the bevel gear ring (13-13).

3. The adjustable hydraulic valve core outer diameter grinding and stabilizing clamping fixture according to claim 2, characterized in that: The four guide openings (14) on the movable rod (13-8) are each equipped with a guide bar (15), and the guide bar (15) is fixedly installed in the first clamping block (3).

4. The adjustable hydraulic valve core outer diameter grinding and stabilizing clamping fixture according to claim 2, characterized in that: A control handle (16) is movably sleeved on the control rod (13-3). A limit plate (17) is movably installed inside the control handle (16). The limit plate (17) is fixedly connected to one end of the control rod (13-3). A spring (18) is movably sleeved on the control rod (13-3). The two ends of the spring (18) are fixedly connected to the limit plate (17) and the inner wall of the control handle (16) respectively. One end of the control handle (16) is set to abut against the outer ring wall of the fixing ring (13-1).

5. The adjustable hydraulic valve core outer diameter grinding and stabilizing clamping fixture according to claim 4, characterized in that: One end of the control handle (16) is fixedly provided with a rubber ring (19), and the rubber ring (19) is in contact with the outer ring wall of the fixing ring (13-1).

6. The adjustable hydraulic valve core outer diameter grinding and stabilizing clamping fixture according to claim 1, characterized in that: The second clamping block (12) is movably inserted on the lifting block (11). The lifting block (11) is rotatably inserted with an adjusting screw (20) through a bearing, and one end of the adjusting screw (20) is rotatably inserted into the second clamping block (12) through a thread.

Images