A surface grinder for machining hydraulic valve seats

Abstract

The present application discloses a surface grinder for processing hydraulic valve seats, including a bed frame, a grinding unit, a fixture, a horizontal moving platform, an electromagnetic adsorption platform, a horizontal driving unit, a lifting frame, a lifting driving unit, a front and rear driving unit and a coolant supply unit. The grinding unit includes a grinding disc and a rotating driving unit for driving the grinding disc to rotate; the fixture can be adsorbed and fixed on the electromagnetic adsorption platform, and the fixture can clamp a plurality of hydraulic valve seats to be processed. The surface grinder of the present application can clamp and fix a batch of hydraulic valve seats, so that a plurality of hydraulic valve seats can be ground at one time, and the work efficiency is high. There are two clamping methods for the hydraulic valve seat, so that the surface of the hydraulic valve seat can be ground and the chamfer position can be ground, and the grinding is convenient and effective.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic valve seat machining, and more specifically, to a surface grinder for machining a hydraulic valve seat. Background Art

[0002] As a key sealing component in the hydraulic system, the dimensional accuracy of the hydraulic valve seat is crucial to the performance and sealing of the hydraulic system. The surface roughness of the hydraulic valve seat directly affects its sealing performance and wear resistance. The surface grinder can significantly reduce the roughness of the hydraulic valve seat surface and improve its surface finish through fine grinding of the grinding wheel, thereby improving the sealing performance and wear resistance.

[0003] Traditional grinding machines often process single hydraulic valve seats, and there are no specific fixtures for clamping batches of hydraulic valve seats. For hydraulic valve seats that need to be produced in large quantities, each processing requires a series of operations such as clamping, positioning, and adjusting processing parameters of the workpiece. These repetitive tasks are not only time-consuming and labor-intensive, but also reduce the overall processing efficiency and cannot meet the modern industrial production requirements for efficiency and speed. In addition, traditional grinding machines may only have the ability to process a specific surface of the hydraulic valve seat. For parts such as hydraulic valve seats that require multiple processing surfaces, such as planes and chamfers, multiple devices or multiple clampings are required to complete, which increases the complexity and cost of processing, especially for the grinding of the chamfers of the hydraulic valve seats. Summary of the invention

[0004] The present invention aims to overcome the defects of the prior art and provides a surface grinder for machining a hydraulic valve seat.

[0005] In order to achieve the above-mentioned objectives, the present invention provides the following technical solutions: a surface grinder for processing hydraulic valve seats, comprising a bed frame, a grinding unit, a fixture, a horizontal movable platform installed on the bed frame, an electromagnetic adsorption platform installed on the horizontal movable platform, a horizontal driving unit capable of driving the horizontal movable platform to reciprocate horizontally, a lifting frame installed on the bed frame, a lifting driving unit for driving the lifting frame to lift and lower, a front and rear driving unit installed on the lifting frame and used to drive the grinding unit to move forward and backward, and a coolant supply unit for providing coolant to the grinding unit, wherein the grinding unit comprises a grinding disc and a rotating driving unit for driving the grinding disc to rotate; the fixture can be adsorbed and fixed on the electromagnetic adsorption platform, and the fixture can clamp a plurality of hydraulic valve seats to be processed.

[0006] Furthermore, the bed frame includes a bed frame body and a vertical mounting frame fixedly connected to the bed frame body, the horizontal movable platform is installed on the bed frame body, and the lifting frame is installed on the vertical mounting frame.

[0007] Furthermore, the coolant supply unit includes a nozzle for spraying the coolant toward the grinding disc.

[0008] Furthermore, the hydraulic valve seat is in a rectangular shape.

[0009] Furthermore, the hydraulic valve seat is in the shape of a chamfered rectangular parallelepiped.

[0010] Further, the clamp includes a base, a clamping unit and a plurality of bearing seats; the base includes a substrate, two first side plates connected to the substrate and two horizontal slide rails fixed to the substrate; each bearing seat can carry a hydraulic valve seat; the clamping unit includes a strip fixing seat that can be fixed to the substrate, a strip lifting seat located above the strip fixing seat, and two second side plates located on both sides of the strip lifting seat, a plurality of connecting beams fixedly connected to the strip lifting seat are connected between the two second side plates, the second side plate is connected to a limiting plug plate, the first side plate has a limiting slot that cooperates with the limiting plug plate, the first side plate has a first locking bolt that locks the relative position of the first side plate and the second side plate, the clamping unit has a plurality of mounting positions, the number of the mounting positions is equal to half the number of the bearing seats, a plurality of clamping blocks are fixed to the inner side of the second side plate, each mounting position has one clamping block on both sides respectively, and each mounting position also has two clamping plates, and a hydraulic valve seat can be clamped between the corresponding clamping blocks and the clamping plates.

[0011] The cam is provided with a plurality of locking plates, each of which has a plurality of locking plates, each of which has a plurality of locking plates, each of which has a plurality of locking plates, each of which has a plurality of locking plates.

[0012] Thus, the height of the strip lift seat can be adjusted by rotating the screw rod, and the height of the second side plate and the strip lift seat can be locked by the first locking bolt. The clamping plate can be driven by extracting hydraulic oil or pumping hydraulic oil into the main pipe part by the hydraulic oil suction unit.

[0013] Thus, the first piston tube and the first insertion tube can be connected through the first annular piston, and the first piston tube and the first insertion tube can move relative to each other under the drive of the hydraulic oil. The second piston tube and the second insertion tube can be connected through the second annular piston, and the second piston tube and the second insertion tube can move relative to each other under the drive of the hydraulic oil.

[0014] Furthermore, a first strip groove is formed between the horizontal slide rail and the first side plate, a second strip groove is formed between the horizontal slide rail and the strip fixing seat, one end of the first strip groove is higher than the other end, and one end of the second strip groove is higher than the other end.

[0015] Therefore, the first strip-shaped groove portion and the second strip-shaped groove portion are beneficial to the discharge of the cooling liquid.

[0016] Furthermore, each second side plate has more than five limit plugs, and each limit plug corresponds to four first locking bolts.

[0017] Furthermore, an end portion of the strip-shaped fixing seat is fixedly connected to an extended fixing plate, and the hydraulic suction unit is fixed to the extended fixing plate.

[0018] Furthermore, the hydraulic oil suction unit includes a hydraulic oil tank and a hydraulic oil pump.

[0019] Furthermore, the bearing seat includes a horizontal slide, a first support plate connected to the horizontal slide, and a second support plate connected to the horizontal slide, the first support plate and the second support plate are perpendicular; the horizontal slide has a first slide groove that cooperates with the horizontal slide rail, the second support plate has a second slide groove that cooperates with the horizontal slide rail, the second slide groove is connected to the first slide groove and one end of the second slide groove extends to the horizontal slide; the bearing seat can be in a first bearing state and a second bearing state, in the first bearing state, the first slide groove cooperates with the horizontal slide rail, and the angle between the first support plate and the substrate is 45 degrees; in the second bearing state, the second slide groove cooperates with the horizontal slide rail, and the second support plate is parallel to the substrate.

[0020] Furthermore, in the second bearing state, when the second slide groove cooperates with the horizontal slide rail, the first support plate is perpendicular to the base plate.

[0021] Furthermore, the clamping unit also includes a plurality of limiting units, each installation position of the clamping unit has two L-shaped tubes connected to the main pipe part, a piston part is installed in the L-shaped tube, the piston part is connected to a push rod, and the push rod is connected to a clamping rod; each installation position of the clamping unit has four first limiting holes and four second limiting holes, and the limiting unit includes a clamping block, an L-shaped plate connected to the clamping block, and two limiting blocks connected to the L-shaped plate; the clamp can be in a first clamping mode and a second clamping mode, in the first clamping mode, all the bearing seats are in a first bearing state, and the strip lifting seat is in a first height , the two limit plugs of each limit unit are inserted into the first limit plug hole, each hydraulic valve seat is clamped between the corresponding clamping plate and the clamping block, and the horizontal slide of each bearing seat is clamped between a clamping block and a clamping rod; in the second clamping mode, all the bearing seats are in the second bearing state, the strip lifting seat is at the second height, the two limit plugs of each limit unit are inserted into the second limit plug hole, each hydraulic valve seat is clamped between the corresponding clamping plate and the clamping block, the horizontal slide of each bearing seat is abutted against a clamping block, and the second support plate is abutted against a clamping rod; the first height is higher than the second height.

[0022] Thus, the clamping block and the clamping plate can be driven by the hydraulic oil suction unit to clamp the hydraulic valve seat, while the abutting block and the abutting rod can simultaneously position and fix the bearing seat.

[0023] Furthermore, a rotating block is installed at the top end of the screw rod, and the rotating block has a regular hexagonal groove.

[0024] Thereby, it is convenient to use a tool to drive the screw to rotate.

[0025] Furthermore, the vertical slide rail has a row of second threaded holes distributed at equal intervals, and at least one second threaded hole is installed with the second locking bolt.

[0026] Furthermore, the number of bearing seats at the two horizontal slide rails is equal, both greater than or equal to 8; the number of clamping blocks at each second side plate is equal to the number of bearing seats at a single horizontal slide rail.

[0027] Furthermore, the base plate is provided with a third threaded hole, and the strip-shaped fixing seat is provided with a fixing bolt capable of fixing the strip-shaped fixing seat and the base plate.

[0028] The present application also discloses a clamp, comprising a base, a clamping unit and a plurality of bearing seats; the base comprises a substrate, two first side plates connected to the substrate and two horizontal slide rails fixed to the substrate; each bearing seat can carry a rectangular workpiece; the clamping unit comprises a strip fixing seat that can be fixed to the substrate, a strip lifting seat located above the strip fixing seat, and two second side plates located on both sides of the strip lifting seat, a plurality of connecting beams fixedly connected to the strip lifting seat are connected between the two second side plates, the second side plate is connected to a limiting plug plate, the first side plate has a limiting slot that cooperates with the limiting plug plate, the first side plate has a first locking bolt that locks the relative position of the first side plate and the second side plate, the clamping unit has a plurality of mounting positions, the number of the mounting positions is equal to half the number of the bearing seats, a plurality of clamping blocks are fixed to the inner side of the second side plate, each mounting position has one clamping block on both sides respectively, and each mounting position also has two clamping plates, and a workpiece can be clamped between the corresponding clamping blocks and the clamping plates.

[0029] Furthermore, each connecting crossbeam is fixedly connected to the strip-shaped lifting seat and the two second side plates, and the two second side plates are respectively fixedly connected to two ends of the connecting crossbeam.

[0030] Furthermore, the workpiece is a cuboid workpiece with chamfered corners.

[0031] The cam is provided with a plurality of locking plates, each of which has a plurality of locking plates, each of which has a plurality of locking plates, each of which has a plurality of locking plates, each of which has a plurality of locking plates.

[0032] Furthermore, each second side plate has more than five limit plugs, and each limit plug corresponds to four first locking bolts.

[0033] Furthermore, an end portion of the strip-shaped fixing seat is fixedly connected to an extended fixing plate, and the hydraulic suction unit is fixed to the extended fixing plate.

[0034] Furthermore, the hydraulic oil suction unit includes a hydraulic oil tank and a hydraulic oil pump.

[0035] Furthermore, the bearing seat includes a horizontal slide, a first support plate connected to the horizontal slide, and a second support plate connected to the horizontal slide, the first support plate and the second support plate are perpendicular; the horizontal slide has a first slide groove that cooperates with the horizontal slide rail, the second support plate has a second slide groove that cooperates with the horizontal slide rail, the second slide groove is connected to the first slide groove and one end of the second slide groove extends to the horizontal slide; the bearing seat can be in a first bearing state and a second bearing state, in the first bearing state, the first slide groove cooperates with the horizontal slide rail, and the angle between the first support plate and the substrate is 45 degrees; in the second bearing state, the second slide groove cooperates with the horizontal slide rail, and the second support plate is parallel to the substrate.

[0036] Furthermore, in the second bearing state, when the second slide groove cooperates with the horizontal slide rail, the first support plate is perpendicular to the base plate.

[0037] Furthermore, the first support plate has a notch portion for allowing the abutting block to pass through.

[0038] Therefore, when the first support plate is relatively large, a notch is provided to facilitate installation of the limiting unit, and the abutting block of the limiting unit can pass through the notch from above the bearing seat and be installed at the installation position of the strip fixing seat.

[0039] In some embodiments, the first support plate is relatively small, and there is sufficient installation space when the limiting unit is installed from top to bottom (when the limiting plug is inserted into the first limiting plug hole from top to bottom). In this case, the first support plate does not need to be provided with a notch.

[0040] Furthermore, the clamping unit also includes a plurality of limiting units, each installation position of the clamping unit has two L-shaped tubes connected to the main pipe part, a piston part is installed in the L-shaped tube, the piston part is connected to a push rod, and the push rod is connected to a clamping rod; each installation position of the clamping unit has four first limiting holes and four second limiting holes, and the limiting unit includes a clamping block, an L-shaped plate connected to the clamping block, and two limiting blocks connected to the L-shaped plate; the clamp can be in a first clamping mode and a second clamping mode, in the first clamping mode, all the bearing seats are in a first bearing state, and the strip lifting seat is in a first height, the two limit plugs of each limit unit are inserted into the first limit plug hole, each workpiece is clamped between the corresponding clamping plate and the clamping block, and the horizontal slide of each bearing seat is clamped between a clamping block and a clamping rod; in the second clamping mode, all the bearing seats are in the second bearing state, the strip lifting seat is at the second height, the two limit plugs of each limit unit are inserted into the second limit plug hole, each workpiece is clamped between the corresponding clamping plate and the clamping block, the horizontal slide of each bearing seat is abutted against a clamping block, and the second support plate is abutted against a clamping rod; the first height is higher than the second height.

[0041] Furthermore, a rotating block is installed at the top end of the screw rod, and the rotating block has a regular hexagonal groove.

[0042] Thereby, it is convenient to use a tool to rotate the screw rod.

[0043] Furthermore, the vertical slide rail has a row of second threaded holes distributed at equal intervals, and at least one second threaded hole is installed with the second locking bolt.

[0044] Furthermore, the number of bearing seats at the two horizontal slide rails is equal, both greater than or equal to 8; the number of clamping blocks at each second side plate is equal to the number of bearing seats at a single horizontal slide rail.

[0045] Furthermore, the base plate is provided with a third threaded hole, and the strip-shaped fixing seat is provided with a fixing bolt capable of fixing the strip-shaped fixing seat and the base plate.

[0046] Beneficial effects:

[0047] 1. The surface grinder of the present application can clamp and fix batches of hydraulic valve seats, thereby grinding and processing multiple hydraulic valve seats at one time, with high work efficiency;

[0048] 2. The surface grinder of the present application has two clamping modes for the hydraulic valve seat, so that the surface grinding and chamfering position grinding of the hydraulic valve seat can be realized, and the grinding is convenient and effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 This is a schematic diagram of each bearing seat installed in the first bearing state in Example 1;

[0050] Figure 2 This is an enlarged view of area 1A;

[0051] Figure 3 This is an enlarged view of area 1B;

[0052] Figure 4 This is a schematic diagram of the fixed connection between the strip-shaped fixing seat and the base plate in Example 1;

[0053] Figure 5 This is an enlarged view of area 2A;

[0054] Figure 6 This is a schematic diagram of the bearing seat moving closer to the abutting rod in Example 1;

[0055] Figure 7 This is a schematic diagram of installing the limit unit in Example 1;

[0056] Figure 8 A schematic diagram of installing a hydraulic valve seat in Example 1;

[0057] Fig. 9 This is a schematic diagram of rotating the screw rod to raise the bar-shaped lifting seat in Example 1;

[0058] Fig.10 This is an enlarged view of area 6A;

[0059] Fig.11 This is a schematic diagram of the clamp clamping the hydraulic valve seat in Example 1;

[0060] Fig.12 This is an enlarged view of area 7A;

[0061] Fig.13 This is a schematic diagram of installing each bearing seat in the second bearing state of Example 2;

[0062] Fig.14 This is a schematic diagram of the fixed connection between the strip-shaped fixing seat and the base plate in Example 2;

[0063] Fig.15 This is a schematic diagram of installing the limit unit in Example 2;

[0064] Fig.16 This is a schematic diagram of installing a hydraulic valve seat in Example 2;

[0065] Fig.17 This is a schematic diagram of the clamp clamping the hydraulic valve seat in Example 2;

[0066] Fig.18 This is a schematic diagram of the first clamping mode of Example 3;

[0067] Fig.19 This is a schematic diagram of the second clamping mode of Example 3.

[0068] Description of the accompanying drawings: bed frame 1; grinding unit 2; grinding disc 2.1; base 3; base plate 3.1; first side plate 3.2; limiting slot 3.2.1; horizontal slide rail 3.3; first locking bolt 3.4; strip fixing seat 4.1; vertical slide rail 4.1.1; first limiting socket 4.1.2; second limiting socket 4.1.3; extension fixing plate 4.1.4; strip lifting seat 4.2; lifting slider 4.2.1; second side plate 4.3; connecting beam 4.4; limiting plug plate 4.5; clamping block 4.6; clamping plate 4.7; first piston Tube 4.8; first insert tube 4.9; second piston tube 4.10; second insert tube 4.11; bearing seat 5; horizontal slide seat 5.1; first support plate 5.2; notch portion 5.2.1; second support plate 5.3; second slide groove 5.4; hydraulic valve seat 6; horizontal moving platform 7; electromagnetic adsorption platform 8; main pipe 9; hydraulic oil suction unit 9.1; screw rod 10; rotating block 10.1; limiting unit 11; tightening block 11.1; L-shaped plate 11.2; limiting insert block 11.3; L-shaped tube 12; push rod 12.1; tightening rod 12.2. DETAILED DESCRIPTION

[0069] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0070] like Figure 1-12As shown, a surface grinder for processing hydraulic valve seats includes a bed frame 1, a grinding unit 2, a fixture, a horizontal movable platform 7 installed on the bed frame 1, an electromagnetic adsorption platform 8 installed on the horizontal movable platform 7, a horizontal driving unit capable of driving the horizontal movable platform 7 to move horizontally and reciprocatingly, a lifting frame installed on the bed frame 1, a lifting driving unit for driving the lifting frame to lift and lower, a front and rear driving unit installed on the lifting frame and used to drive the grinding unit 2 to move forward and backward, and a coolant supply unit for providing coolant to the grinding unit 2, wherein the grinding unit 2 includes a grinding disc 2.1 and a rotating driving unit for driving the grinding disc to rotate; the fixture can be adsorbed and fixed on the electromagnetic adsorption platform 8, and the fixture can clamp a plurality of hydraulic valve seats 6 to be processed. The clamp comprises a base 3, a clamping unit and a plurality of bearing seats 5; the base 3 comprises a base plate 3.1, two first side plates 3.2 connected to the base plate 3.1 and two horizontal slide rails 3.3 fixed to the base plate 3.1; each bearing seat 5 can bear a hydraulic valve seat 6; the clamping unit comprises a strip-shaped fixing seat 4.1 that can be fixed to the base plate 3.1, a strip-shaped lifting seat 4.2 located above the strip-shaped fixing seat 4.1, and two second side plates 4.3 located on both sides of the strip-shaped lifting seat 4.2, a plurality of connecting cross beams 4.4 fixedly connected to the strip-shaped lifting seat 4.2 are connected between the two second side plates 4.3, and the second side plates 4.3 are connected to the limited position The plug plate 4.5, the first side plate 3.2 has a limiting slot 3.2.1 that cooperates with the limiting plug plate 4.5, the first side plate 3.2 has a first locking bolt 3.4 that locks the relative position of the first side plate 3.2 and the second side plate 4.3, the clamping unit has a plurality of mounting positions, the number of the mounting positions is equal to half the number of the bearing seat 5, a plurality of clamping blocks 4.6 are fixed to the inner side of the second side plate 4.3, each mounting position has a clamping block 4.6 on both sides, each mounting position also has two clamping plates 4.7, and a hydraulic valve seat can be clamped between the corresponding clamping blocks 4.6 and the clamping plates 4.7.

[0071] The two ends of the strip lifting seat 4.2 are fixedly connected with lifting sliders 4.2.1, and the two ends of the strip fixing seat 4.1 are fixedly connected with two vertical slide rails 4.1.1 that cooperate with the lifting slider, and the vertical slide rails are installed with second locking bolts (the second locking bolts are not drawn in the figure) that can lock the relative positions of the lifting slider and the vertical slide rail; the strip fixing seat 4.1 is installed with a main pipe 9, and two first piston tubes 4.8 are installed at each installation position of the strip lifting seat 4.2, and each first piston tube 4.8 is inserted with a first plug 4.9 that is connected to the main pipe 9, and the end of the first plug 4.9 has a first locking bolt located at the first A first annular piston in the piston tube 4.8, each clamping plate 4.7 is connected to two second piston tubes 4.10, each second piston tube 4.10 is inserted with a second insert tube 4.11 connected to the first piston tube 4.8, and the end of the second insert tube 4.11 is installed with a second annular piston located in the second piston tube 4.10; the strip-shaped fixing seat 4.1 is connected to a screw rod 10 through a bearing, and the strip-shaped lifting seat 4.2 has a first threaded hole that cooperates with the screw rod 10; the main pipe 9 is connected to a hydraulic oil suction unit 9.1, and the lifting slider of the two lifting slides close to the hydraulic suction unit has a groove portion passed by the main pipe 9. The bearing seat 5 includes a horizontal slide 5.1, a first support plate 5.2 connected to the horizontal slide 5.1, and a second support plate 5.3 connected to the horizontal slide 5.1, the first support plate 5.2 and the second support plate 5.3 are perpendicular; the horizontal slide 5.1 has a first slide groove that cooperates with the horizontal slide rail 3.3, the second support plate 5.3 has a second slide groove 5.4 that cooperates with the horizontal slide rail 3.3, the second slide groove 5.4 is connected to the first slide groove and one end of the second slide groove 5.4 extends to the horizontal slide 5.1; the bearing seat 5 can be in a first bearing state and a second bearing state, in the first bearing state, the first slide groove cooperates with the horizontal slide rail 3.3, and the angle between the first support plate 5.2 and the base plate 3.1 is 45 degrees; in the second bearing state, the second slide groove 5.4 cooperates with the horizontal slide rail 3.3, and the second support plate 5.3 is parallel to the base plate 3.1.The clamping unit also includes a plurality of limiting units 11, each installation position of the clamping unit has two L-shaped tubes 12 connected to the main pipe part 9, a piston part is installed in the L-shaped tube 12, the piston part is connected to a push rod 12.1, and the push rod 12.1 is connected to a clamping rod 12.2; each installation position of the clamping unit has four first limiting holes 4.1.2 and four second limiting holes 4.1.3, the limiting unit 11 includes a clamping block 11.1, an L-shaped plate 11.2 connected to the clamping block 11.1 and two limiting plugs 11.3 connected to the L-shaped plate 11.2; the clamp can be in a first clamping mode and a second clamping mode, in the first clamping mode, all the bearing seats 5 are in a first bearing state, the strip lifting seat 4.2 is at a first height, and each The two limit plugs 11.3 of each limit unit 11 are inserted into the first limit plug hole, each hydraulic valve seat is clamped between the corresponding clamping plate 4.7 and the clamping block 4.6, and the horizontal slide 5.1 of each bearing seat 5 is clamped between a clamping block 11.1 and a clamping rod 12.2; in the second clamping mode, all the bearing seats 5 are in the second bearing state, the strip lifting seat 4.2 is at the second height, the two limit plugs 11.3 of each limit unit 11 are inserted into the second limit plug hole, each hydraulic valve seat is clamped between the corresponding clamping plate 4.7 and the clamping block 4.6, the horizontal slide 5.1 of each bearing seat 5 is abutted against a clamping block 11.1, and the second support plate 5.3 is abutted against a clamping rod 12.2; the first height is higher than the second height.

[0072] A rotating block 10.1 is installed at the top of the screw rod 10, and the rotating block has a regular hexagonal groove. The vertical slide rail has a row of second threaded holes distributed at equal intervals, and at least one second threaded hole is installed with the second locking bolt. The number of bearing seats 5 at the two horizontal slide rails 3.3 is equal, and both are greater than or equal to 8; the number of clamping blocks 4.6 at each second side plate 4.3 is equal to the number of bearing seats 5 at a single horizontal slide rail 3.3.

[0073] In Example 1, Figure 1-12 As shown, the base of the fixture is fixed by the electromagnetic adsorption platform. The fixture adopts the first clamping mode, so that the chamfer of each hydraulic valve seat is parallel to the horizontal plane and faces the grinding disc, so that through the reciprocating movement of the horizontal moving platform, the chamfers of multiple hydraulic valve seats reciprocate through the grinding disc multiple times, and the height and front feed of the grinding disc are adjustable, so that the chamfers of all hydraulic valve seats can be polished.

[0074] The specific clamping steps are as follows: Figure 1As shown, the hydraulic oil in the main pipe is extracted, so that the clamping plate and the clamping rod are moved away from the bearing seat or the hydraulic valve seat, thereby leaving enough space for subsequent installation, and then each bearing seat is installed in the first bearing state; then as shown in FIG. Figure 4 As shown, the strip-shaped fixing seat is fixedly connected to the base plate; then as Figure 6 As shown, move the bearing seat close to the clamping rod; then Figure 7 As shown, the limiting unit is installed so that the limiting plug of the limiting unit is inserted into the first limiting plug hole of the strip-shaped fixing seat; then Figure 8 As shown, install the hydraulic valve seat on each bearing seat; then Fig. 9 As shown, the screw rod is rotated to make the bar lifting seat rise to a suitable position, and the height of the bar lifting seat and the two second side plates are locked by using the first locking bolt and the second locking bolt; then Fig.11 As shown, hydraulic oil is applied to the main pipe, under the action of the hydraulic oil, the clamping rod moves toward the bearing seat, and the clamping plate moves toward the hydraulic valve seat, so that the bearing seat is clamped and positioned by the clamping rod and the clamping block, and the hydraulic valve seat is clamped and fixed by the clamping block and the clamping plate. Then, the electromagnetic adsorption platform is turned on, and the chamfer of the hydraulic valve seat is polished using the polishing unit.

[0075] Example 1 Figure 13-17 As shown, the difference between Example 2 and Example 1 is that in Example 2, the clamp adopts the second clamping mode, and the surface of each hydraulic valve seat is parallel to the horizontal plane, so that the grinding disc can grind the surface of the hydraulic valve seat, thereby achieving the grinding of the surfaces of batches of hydraulic valve seats.

[0076] The specific clamping steps are as follows: Fig.13 As shown, the hydraulic oil in the main pipe is extracted, so that the clamping plate and the clamping rod are moved away from the bearing seat or the hydraulic valve seat, thereby leaving enough space for subsequent installation, and then each bearing seat is installed in the second bearing state; then as shown in FIG. Fig.14 As shown, the strip-shaped fixing seat is fixedly connected to the base plate; then as Fig.15 As shown, the limiting unit is installed so that the second limiting plug plate of the limiting unit is inserted into the second limiting plug hole; then Fig.16 As shown, install the hydraulic valve seat at the bearing seat, and lock the first locking bolt and the second locking bolt; then Fig.17 As shown, hydraulic oil is applied to the main pipe, under the action of the hydraulic oil, the clamping rod moves toward the bearing seat, and the clamping plate moves toward the hydraulic valve seat, so that the bearing seat is clamped and positioned by the clamping rod and the clamping block, and the hydraulic valve seat is clamped and fixed by the clamping block and the clamping plate. Then, the electromagnetic adsorption platform is turned on, and the surface of the hydraulic valve seat is polished using the polishing unit.

[0077] Example 2 Figure 18-19 As shown, a clamp includes a base, a clamping unit and a plurality of bearing seats; the base includes a base plate, two first side plates connected to the base plate and two horizontal slide rails fixed to the base plate; each bearing seat can carry a rectangular workpiece; the clamping unit includes a strip fixing seat that can be fixed to the base plate, a strip lifting seat located above the strip fixing seat, and two second side plates located on both sides of the strip lifting seat, and a plurality of connecting beams fixedly connected to the strip lifting seat are connected between the two second side plates, the second side plate is connected to a limit plug plate, the first side plate has a limit slot matched with the limit plug plate, the first side plate has a first locking bolt that locks the relative position of the first side plate and the second side plate, the clamping unit has a plurality of mounting positions, the number of the mounting positions is equal to half of the number of the bearing seats, a plurality of clamping blocks are fixed on the inner side of the second side plate, each mounting position has a clamping block on both sides, each mounting position also has two clamping plates, and a workpiece can be clamped between the corresponding clamping blocks and clamping plates. The workpiece is a chamfered rectangular workpiece. The two ends of the strip lifting seat are fixedly connected with a lifting slider, and the two ends of the strip fixing seat are fixedly connected with two vertical slide rails cooperating with the lifting slider, and the vertical slide rail is installed with a second locking bolt that can lock the relative position of the lifting slider and the vertical slide rail; the strip fixing seat is installed with a main pipe, and each mounting position of the strip lifting seat is installed with two first piston tubes, each first piston tube is inserted with a first plug connected with the main pipe, and the end of the first plug tube has a first annular piston located in the first piston tube, and each clamping plate is connected with two second piston tubes, and each second piston tube is inserted with a second plug connected with the first piston tube, and the end of the second plug tube is installed with a second annular piston located in the second piston tube; the strip fixing seat is connected with a screw rod through a bearing, and the strip lifting seat has a first threaded hole cooperating with the screw rod; the main pipe is connected with a hydraulic oil suction unit, and the lifting sliders of the two lifting sliders close to the hydraulic suction unit have a groove portion passed by the main pipe.

[0078] The bearing seat includes a horizontal slide, a first support plate connected to the horizontal slide, and a second support plate connected to the horizontal slide, the first support plate and the second support plate are perpendicular; the horizontal slide has a first slide groove that cooperates with the horizontal slide rail, the second support plate has a second slide groove that cooperates with the horizontal slide rail, the second slide groove is connected to the first slide groove and one end of the second slide groove extends to the horizontal slide; the bearing seat can be in a first bearing state and a second bearing state, in the first bearing state, the first slide groove cooperates with the horizontal slide rail, and the angle between the first support plate and the substrate is 45 degrees; in the second bearing state, the second slide groove cooperates with the horizontal slide rail, and the second support plate is parallel to the substrate. The clamping unit also includes a plurality of limit units, each installation position of the clamping unit has two L-shaped tubes connected to the main pipe part, a piston part is installed in the L-shaped tube, the piston part is connected to a push rod, and the push rod is connected to a clamping rod; each installation position of the clamping unit has four first limit holes and four second limit holes, and the limit unit includes a clamping block, an L-shaped plate connected to the clamping block, and two limit plugs connected to the L-shaped plate; the clamp can be in a first clamping mode and a second clamping mode, in the first clamping mode, all the bearing seats are in a first bearing state, and the strip lifting seat is in a first height , the two limit blocks of each limit unit are inserted into the first limit hole, each workpiece is clamped between the corresponding clamping plate and the clamping block, and the horizontal slide of each bearing seat is clamped between a clamping block and a clamping rod; in the second clamping mode, all the bearing seats are in the second bearing state, the strip lifting seat is at the second height, the two limit blocks of each limit unit are inserted into the second limit hole, each workpiece is clamped between the corresponding clamping plate and the clamping block, the horizontal slide of each bearing seat is abutted against a clamping block, and the second support plate is abutted against a clamping rod; the first height is higher than the second height.

[0079] The clamp of Example 3 can be placed in Fig.18 The first clamping mode shown can also be in the Fig.19 The second clamping mode shown. Thus, it is possible to clamp and position a batch of rectangular parallelepiped parts at different angles. Thus, the fixture can be used in the field of mechanical processing, and the fixture is used to fix the workpiece (and when fixing, the bearing seats of the same horizontal slide rail are distributed in a row with equal spacing, so that the fixed workpieces are in two rows, and the workpieces in each row are distributed with equal spacing), and it is possible to perform operations such as grinding, drilling, tapping, and polishing on the workpiece.

[0080] Although the present invention has been illustrated and described with respect to the preferred embodiments, it will be appreciated by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. A surface grinder for machining hydraulic valve seats, characterized in that: The machine comprises a bed frame, a grinding unit, a fixture, a horizontal movable platform installed on the bed frame, an electromagnetic adsorption platform installed on the horizontal movable platform, a horizontal driving unit capable of driving the horizontal movable platform to move horizontally and reciprocatingly, a lifting frame installed on the bed frame, a lifting driving unit for driving the lifting frame to move up and down, a front and rear driving unit installed on the lifting frame and used to drive the grinding unit to move forward and backward, and a coolant supply unit for providing coolant to the grinding unit, wherein the grinding unit comprises a grinding disc and a rotation driving unit for driving the grinding disc to rotate; the fixture can be adsorbed and fixed on the electromagnetic adsorption platform, and the fixture can clamp a plurality of hydraulic valve seats to be processed; The clamp comprises a base, a clamping unit and a plurality of bearing seats; the base comprises a substrate, two first side plates connected to the substrate and two horizontal slide rails fixed to the substrate; each bearing seat can bear a hydraulic valve seat; the clamping unit comprises a strip fixing seat that can be fixed to the substrate, a strip lifting seat located above the strip fixing seat, and two second side plates located on both sides of the strip lifting seat, a plurality of connecting beams fixedly connected to the strip lifting seat are connected between the two second side plates, the second side plate is connected to a limiting plug plate, the first side plate has a limiting slot that cooperates with the limiting plug plate, the first side plate has a first locking bolt that locks the relative position of the first side plate and the second side plate, the clamping unit has a plurality of mounting positions, the number of the mounting positions is equal to half the number of the bearing seats, a plurality of clamping blocks are fixed to the inner side of the second side plate, each mounting position has one clamping block on both sides respectively, and each mounting position also has two clamping plates, and a hydraulic valve seat can be clamped between the corresponding clamping blocks and the clamping plates; The strip-shaped fixing seat is provided with a main pipe portion; The bearing seat comprises a horizontal slide, a first support plate connected to the horizontal slide, and a second support plate connected to the horizontal slide, the first support plate and the second support plate are perpendicular; the horizontal slide is provided with a first slide groove cooperating with the horizontal slide rail, the second support plate is provided with a second slide groove cooperating with the horizontal slide rail, the second slide groove is connected with the first slide groove and one end of the second slide groove extends to the horizontal slide; the bearing seat can be in a first bearing state and a second bearing state, in the first bearing state, the first slide groove cooperates with the horizontal slide rail, and the angle between the first support plate and the base plate is 45 degrees; in the second bearing state, the second slide groove cooperates with the horizontal slide rail, and the second support plate is parallel to the base plate; The clamping unit also includes a plurality of limiting units, each installation position of the clamping unit has two L-shaped tubes connected to the main pipe part, a piston part is installed in the L-shaped tube, the piston part is connected to a push rod, and the push rod is connected to a clamping rod; each installation position of the clamping unit has four first limiting holes and four second limiting holes, and the limiting unit includes a clamping block, an L-shaped plate connected to the clamping block, and two limiting plugs connected to the L-shaped plate; the clamp can be in a first clamping mode and a second clamping mode. In the first clamping mode, all the bearing seats are in a first bearing state, the strip lifting seat is at a first height, and each The two limit plugs of each limit unit are inserted into the first limit plug hole, each hydraulic valve seat is clamped between the corresponding clamping plate and the clamping block, and the horizontal slide of each bearing seat is clamped between a clamping block and a clamping rod; in the second clamping mode, all the bearing seats are in the second bearing state, the strip lifting seat is at the second height, the two limit plugs of each limit unit are inserted into the second limit plug hole, each hydraulic valve seat is clamped between the corresponding clamping plate and the clamping block, the horizontal slide of each bearing seat is abutted against a clamping block, and the second support plate is abutted against a clamping rod; the first height is higher than the second height.

2. The surface grinder for machining a hydraulic valve seat according to claim 1, characterized in that: The two ends of the strip lifting seat are fixedly connected with a lifting slider, and the two ends of the strip fixing seat are fixedly connected with two vertical slide rails matching with the lifting slider, and the vertical slide rail is installed with a second locking bolt that can lock the relative position of the lifting slider and the vertical slide rail; two first piston tubes are installed at each installation position of the strip lifting seat, each first piston tube is inserted with a first plug connected to the main pipe part, and the end of the first plug tube has a first annular piston located in the first piston tube, and each clamping plate is connected with two second piston tubes, and each second piston tube is inserted with a second plug connected to the first piston tube, and the end of the second plug tube is installed with a second annular piston located in the second piston tube; a screw rod is connected to the strip fixing seat through a bearing, and a first threaded hole matching with the screw rod is provided at the strip lifting seat; the main pipe is connected with a hydraulic oil suction unit, and the lifting sliders of the two lifting sliders close to the hydraulic suction unit have a groove portion passed by the main pipe part.

3. The surface grinder for machining a hydraulic valve seat according to claim 2, characterized in that: A rotating block is installed at the top end of the screw rod, and the rotating block has a regular hexagonal groove.

4. The surface grinder for machining a hydraulic valve seat according to claim 2, characterized in that: The vertical slide rail is provided with a row of second threaded holes distributed at equal intervals, and at least one second threaded hole is installed with the second locking bolt.

5. The surface grinder for machining a hydraulic valve seat according to claim 1, characterized in that: The number of bearing seats at the two horizontal slide rails is equal, and both are greater than or equal to 8; the number of clamping blocks at each second side plate is equal to the number of bearing seats at a single horizontal slide rail.

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