CN111687745A - Case grinder - Google Patents
Case grinder Download PDFInfo
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- CN111687745A CN111687745A CN202010611314.0A CN202010611314A CN111687745A CN 111687745 A CN111687745 A CN 111687745A CN 202010611314 A CN202010611314 A CN 202010611314A CN 111687745 A CN111687745 A CN 111687745A
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- valve core
- grinding
- sliding table
- valve
- plate
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- 238000000227 grinding Methods 0.000 claims abstract description 145
- 239000007788 liquid Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000004088 simulation Methods 0.000 claims description 4
- 239000002699 waste material Substances 0.000 claims description 4
- 244000137852 Petrea volubilis Species 0.000 claims 1
- 230000003750 conditioning effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 238000002955 isolation Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 239000000758 substrate Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/11—Lapping tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/27—Work carriers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/34—Accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention relates to the technical field of valve maintenance, and particularly discloses an automatic grinding device for a valve core of an electromagnetic valve on a main steam isolation valve/main water supply isolation valve of a nuclear power plant. The device comprises a workbench, a track generating mechanism and a valve core clamp, wherein the track generating mechanism is arranged on the workbench, a grinding plate is arranged at the upper end of the outermost side of the track generating mechanism, and the grinding plate can form a certain regular motion track relative to the workbench; and one surface of the valve core clamp, which is provided with the valve core to be ground, is supported and fixed on the grinding plate at the uppermost end of the track generation mechanism through the workbench. The device can realize synchronous grinding of a plurality of valve cores along the track, and can ensure that the stress of each valve core is uniform during grinding and the grinding effect is consistent.
Description
Technical Field
The invention belongs to the technical field of valve maintenance, and particularly relates to an automatic grinding device for a valve core of an electromagnetic valve on a main steam isolation valve/main water supply isolation valve of a nuclear power plant.
Background
The valve core is a core component of the valve, the sealing surface of the valve core is damaged (indentation, scratch, corrosion, pitting, crack and the like) after long-term use, the valve sealing is failed due to the damage of the sealing surface of the valve core, and the valve core is generally repaired by grinding. At present, two methods of grinding and repairing valve cores mainly comprise manual grinding and mechanical automatic grinding, wherein the automatic grinding mainly aims at common general valves, the precision valve cores with small sizes and special purposes are generally ground in a manual mode, for example, the valve cores of the electromagnetic valves on a main steam isolation valve/a main water supply isolation valve of a nuclear power plant are ground in a 8-shaped mode, so that the grinding time and distance in all directions are the same, the grinding effect is ensured, but the labor intensity of the manual grinding is high, the grinding efficiency is low, the pressure applied by the manual grinding is not easy to control, even the valve cores are damaged, and the defects are gradually highlighted.
Disclosure of Invention
The invention aims to provide a valve core grinding device, which can solve the problem of synchronous 8-shaped grinding of a plurality of valve cores, improve grinding efficiency, precision and quality and ensure consistency of the valve cores.
The technical scheme of the invention is as follows: a valve core grinding device comprises a workbench, a track generation mechanism and a valve core clamp, wherein the track generation mechanism is arranged on the workbench, a grinding plate is arranged at the upper end of the outermost side of the track generation mechanism, and the grinding plate can form a certain regular motion track relative to the workbench; and one surface of the valve core clamp, which is provided with the valve core to be ground, is supported and fixed on the grinding plate at the uppermost end of the track generation mechanism through the workbench.
The grinding plate at the outermost side of the track generating mechanism forms an 8-shaped motion track relative to the workbench.
The track generation mechanism comprises a rack, a bottom sliding table and a gear-link mechanism, wherein the bottom sliding table is arranged on the rack, the gear-link mechanism is arranged on the bottom sliding table, the gear-link mechanism comprises a driving wheel and a driven wheel, the driving wheel and the driven wheel are meshed with each other and are installed on the bottom sliding table, and a connecting rod B and a connecting rod A are respectively arranged on the driving wheel and the driven wheel; the sliding groove on the grinding plate is connected with the connecting rod A on the driven wheel, and the grinding plate in the track generating mechanism is driven to form a motion track relative to the workbench through the rotation of the driving wheel.
The bottom plate sliding table is also provided with two middle guide rails which are parallel to each other, the middle sliding table is arranged on the middle guide rails, a sliding groove formed in the middle sliding table is matched with a connecting rod B arranged on the driving wheel, the connecting rod B is driven by the driving wheel to move, the sliding groove of the connecting rod B in the middle sliding table moves relatively, and the middle sliding table is pushed to move along the middle guide rails; the middle sliding table is also provided with two parallel grinding guide rails; the grinding plate is characterized in that a grinding sliding block is arranged on the inner surface of the grinding plate, a grinding sliding groove is formed beside the grinding sliding block, the grinding plate is arranged on a grinding guide rail on the middle sliding table through the grinding sliding block, the grinding plate is enabled to move relative to the middle sliding table, meanwhile, the grinding sliding groove is sleeved on a connecting rod A on a driven wheel, and the grinding plate is enabled to move along an 8-shaped track through the combined action of the middle sliding table and the connecting rod A.
The workbench comprises a base, a plurality of lifting modules and a jacking module, wherein the base is circumferentially provided with the plurality of lifting modules, the valve core clamp is supported and fixed on the lifting modules, and the levelness and the height of the valve core clamp are adjusted through the lifting modules; the jacking module is arranged on the base and can apply pressing force to the valve core clamp.
The base is of a square structure, a groove is formed in the center of the base, and the track generating mechanism is placed in the groove; two lifting modules are respectively arranged at the upper side edge and the lower side edge of the base, each lifting module comprises a screw rod and a jackscrew, and the lifting modules can be independently controlled and can be adjusted in height within a certain range; the jacking module comprises an air pressure arm and a jacking nut, the air pressure arm is arranged on the base, the jacking nut is arranged on the air pressure arm, and pressing force is applied to the valve core clamp through rotating the jacking nut.
The bottom of the rack is provided with a bottom guide rail, and the bottom sliding table is arranged on the bottom guide rail through a sliding block; threaded through holes are formed in the left side wall and the right side wall of the bottom sliding table, a lead screw penetrates through the left threaded through hole and the right threaded through hole of the bottom sliding table in a matching mode, and two ends of the lead screw are supported and fixed on supporting plates on the left side and the right side of the rack through bearings; a motor is further arranged on one side of the rack and is connected with the end part of one side of the lead screw through a transmission mechanism; the motor is used for rotating forwards and backwards, and the lead screw can be driven to drive the bottom sliding table to reciprocate left and right along the bottom guide rail.
The grinding machine is characterized in that two parallel middle guide rails are arranged on the bottom sliding tables at the upper end and the lower end of the driving wheel, a middle sliding table is arranged on the middle guide rail, a linear sliding groove is formed in the middle sliding table, the linear sliding groove is matched with the connecting rod B, the connecting rod B is driven by a grinding motor connected with the driving wheel, and the connecting rod B is driven by the driving wheel to move, so that the sliding groove of the connecting rod B in the middle sliding table relatively moves, and the middle sliding table is pushed to move along the middle.
The grinding plate can be provided with different types of grinding abrasive paper, and different mesh abrasive paper arranged on the grinding plate can be replaced according to grinding precision.
The base on be equipped with the oil extraction groove, the lapping liquid that spills over in the grinding process can be in the waste liquid case through oil extraction groove automatic collection.
The position of the connecting rod B on the driving wheel can be adjusted, and the position of the connecting rod B away from the center of the driving wheel can be adjusted, so that the radius of the grinding track is conditioned.
The valve core clamp comprises a substrate and a valve core support, wherein a groove is formed in the center of one side of the substrate, a plurality of through holes are formed in the groove, a valve core adjusting knob is arranged in each through hole and can be connected with a valve core to be ground, and the longitudinal position of the valve core on the substrate is adjusted through the valve core adjusting knob.
And a valve core support is arranged on the groove on one side of the substrate, an inverted cone-shaped hole matched with the position of the through hole of the substrate is formed in the valve core support, and the inverted cone-shaped hole is matched with the valve core structure.
The middle of the valve core adjusting knob is provided with a thread section, and the lower end axis of the valve core adjusting knob is protruded at the longitudinal position on the substrate by rotating the cylindrical end at the upper end of the valve core adjusting knob at the other side of the substrate slot; the lower end axis bulge of the valve core adjusting knob is matched with the valve core central circular hole to form shaft hole matching, and circumferential positioning of the valve core is realized.
The valve core adjusting knob is of a magnetic attraction type structure and can adsorb the valve core; the upper end surface of the valve core adjusting knob is provided with scale indication.
A plurality of through holes which are uniformly distributed in the circumferential direction are formed in the groove in the base plate, and the valve cores to be ground are uniformly distributed in the circumferential direction of the valve core clamp, so that the included angles between any two adjacent valve cores and the central connecting line of the clamp are equal; if the valve cores to be ground are in a specific number and cannot be uniformly distributed on the valve core clamp in the circumferential direction, adding a valve core simulation body with the same structural size as the valve cores, and enabling the valve cores and the valve core simulation body to be uniformly distributed along the circumferential direction of the valve core clamp.
The invention has the following remarkable effects: the valve core grinding device has the following advantages that: (1) the valve core clamp can simultaneously clamp a plurality of valve cores, and can independently adjust the installation position of any valve core, so that each valve core is reliably contacted with the grinding plate during grinding; (2) the track generating mechanism consisting of the gear and the connecting rod is driven by a motor to automatically generate 8-shaped grinding tracks, the speed is adjustable, and the radius of the 8-shaped grinding tracks can be adjusted by adjusting the center distance between the gear and the connecting rod so as to meet the requirements of grinding processes of valve cores with different sizes; (3) when 8-shaped grinding is carried out, the 8-shaped tracks can reciprocate in a certain range along the longitudinal direction, so that the grinding is more uniform, and meanwhile, the abrasive paper is more effectively utilized; (4) the valve core clamp is reasonable in layout and is provided with the valve core simulating body, the valve core to be ground is matched with the simulating body to be used, so that the valve core can be uniformly distributed along the circumferential direction of the clamp, the stress of each valve core is uniform during grinding, and the grinding effect is consistent.
Drawings
FIG. 1 is a schematic view of a valve core grinding apparatus according to the present invention;
FIG. 2 is a schematic view of a grinding table of the valve core grinding apparatus according to the present invention;
FIG. 3 is a schematic structural view of a grinding track generating mechanism in the valve core grinding device according to the present invention;
FIG. 4 is a schematic view of a portion of the structure of FIG. 3;
FIG. 5 is a schematic view of a valve core fixture of the valve core grinding apparatus according to the present invention;
FIG. 6 is a partial cross-sectional view of the valve cartridge of FIG. 5;
FIG. 7 is a schematic structural diagram of a valve core or a valve core simulator in the valve core grinding device according to the present invention;
FIG. 8 is a sectional view of the valve core or the valve core simulator in FIG. 7;
FIG. 9 is a schematic view of a valve core adjustment knob of the valve core grinding apparatus according to the present invention;
FIG. 10 is a schematic view of a valve core clamp-mounted valve core arrangement of the valve core grinding apparatus of the present invention;
FIG. 11 is a schematic view of another arrangement of a cartridge fixture for mounting a cartridge in a cartridge grinding apparatus according to the present invention;
FIG. 12 is a schematic diagram of a grinding track in the valve core grinding apparatus according to the present invention;
FIG. 13 is a schematic structural view of a polishing plate of the valve core polishing apparatus according to the present invention;
FIG. 14 is an enlarged view of a portion of FIG. 13 at I;
FIG. 15 is an enlarged view of a portion of FIG. 13 at II;
in the figure: 1. a work table; 2. a trajectory generation mechanism; 3. a valve core clamp; 4. a base; 5. an oil discharge groove; 6. a lifting module; 7. a jacking module; 8. a frame; 9. a slider; 10. a bottom sliding table; 11. a middle sliding table; 12. a lead screw; 13. a bearing; 14. a gear-link mechanism; 15. a transmission mechanism; 16. a motor; 17. a driving wheel; 18. a driven wheel; 19. a connecting rod A; 20. a connecting rod B; 21. a substrate; 22. a valve core support; 23. a valve core; 24. a valve core adjusting knob; 25. a grinding plate; 26. grinding the sliding block; 27. and grinding the chute.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in fig. 1, a valve core grinding device comprises a workbench 1, a track generating mechanism 2 and a valve core clamp 3, wherein the track generating mechanism 2 is installed on the workbench 1, and the uppermost shell of the track generating mechanism 2 forms an 8-shaped motion track relative to the workbench 1; the valve core clamp 3 provided with the valve core to be ground is supported and fixed at the upper end of the track generation mechanism 2, and the grinding plate 25 on the track generation mechanism 2 is utilized to grind the valve core in an 8 shape;
as shown in fig. 2, the workbench 1 further includes a base 4, a lifting module 6 and a tightening module 7, wherein at least 3 lifting modules 6 are installed on the circumference of the base 4, the valve core fixture 3 is supported on the workbench 1 by the lifting modules 6, for example, the base 4 is a square column structure, the center of the base is provided with a groove, and 2 lifting modules 6 are installed on the upper and lower side edges of the base 4; the lifting modules 6 comprise screw rods and jackscrews, each lifting module 6 can independently adjust the height within a certain range, and the height and the levelness of the valve core clamp relative to the base 4 are adjusted by utilizing the 4 lifting modules 6 to support the valve core clamp 3; a jacking module 7 is further installed on the base 4, wherein the jacking module 7 comprises a pneumatic arm and a jacking nut, the pneumatic arm is installed on the base 4, and a jacking force is applied to the valve core clamp 3 through the jacking nut installed on the pneumatic arm, so that a valve core in the valve core clamp 3 is ensured to be in contact with the grinding plate 25; an oil discharge groove 5 is further formed in the periphery of the groove in the middle of the base 4, and grinding liquid overflowing in the grinding process can be automatically collected into a waste liquid tank through the oil discharge groove 5.
As shown in fig. 3 and 4, the track generation mechanism 2 includes a frame 8, a bottom sliding table 10, a lead screw 12, a gear-link mechanism 14, and a transmission mechanism 15, wherein a bottom guide rail is laid at the bottom of the frame 8, and the bottom sliding table 10 is mounted on the bottom guide rail through a slider 9, so that the bottom sliding table 10 can slide left and right reciprocally with respect to the bottom guide rail; through holes with thread structures are formed in the left side wall and the right side wall of the bottom sliding table 10, a screw rod 12 penetrates through the bottom sliding table 10 in a matching mode, and two ends of the screw rod 12 are supported and fixed on supporting plates on the left side and the right side of the rack 8 through bearings 13; a motor 16 is further installed on one side of the rack 8, an output shaft of the motor 16 is connected with the end part of one side of the screw 12 through a transmission mechanism 15, and the screw 12 can be driven to move forwards or in the direction through the forward and reverse rotation of the motor 16, so that the left and right reciprocating motion of the bottom sliding table 10 along the bottom guide rail is realized; the gear-link mechanism 14 comprises a driving wheel 17 and a driven wheel 18, wherein the driving wheel 17 and the driven wheel 18 are meshed with each other and are arranged on the upper end face of the bottom sliding table 10, and the driving wheel 17 is driven by a grinding motor so as to drive the driven wheel 18 to rotate; the bottom sliding table 10 is also provided with two middle guide rails which are parallel to each other, the middle sliding table 11 is arranged on the middle guide rails, a sliding groove on the middle sliding table is matched with a connecting rod B20 arranged on the driving wheel 17, the driving wheel 17 drives the connecting rod B20 to move, the sliding groove of the connecting rod B20 in the middle sliding table 11 moves relatively, the middle sliding table 11 is pushed to move along the middle guide rails, and the middle sliding table 11 is also provided with two grinding guide rails which are parallel to each other; as shown in fig. 13 to 15, the outermost casing of the track generating mechanism 2 is supported on the frame 8 to form a grinding plate 25, 2 grinding sliders 26 are mounted on the inner surface of the grinding plate 25, a grinding chute 27 is formed beside the grinding sliders 26, the grinding plate 25 is mounted on a grinding guide rail on the middle sliding table 11 through the grinding sliders 26, so that the grinding plate 25 moves relative to the middle sliding table 11, meanwhile, the grinding chute 27 is sleeved on a connecting rod a19 on the driven wheel 18, and the grinding plate 25 moves along the "8" track under the combined action of the middle sliding table 11 and the connecting rod a 19; the radius of the grinding track of '8' can be adjusted by adjusting the position of the connecting rod B20 on the driving wheel 17 from the center; the motor 16 is used for driving the screw 12 to move forward and backward, and driving the bottom sliding table 10 to move linearly and reciprocally left and right, so that the grinding plate 25 forms a composite motion track as shown in fig. 12 relative to the valve core clamp; grinding abrasive paper is attached to the grinding plate 25, so that relative motion is generated between the grinding flash evaporation and the valve core to be ground, and the valve core to be ground is ground; during the grinding process, the 8 can linearly displace within the longitudinal range in the track, so that the grinding is more uniform, and the utilization rate of the abrasive paper is improved.
As shown in fig. 5 to 9, the valve core clamp 3 includes a base plate 21 and a valve core support 22, wherein the base plate 21 is a flat plate structure with a groove in the middle of the front surface, and the front surface of the flat plate structure faces downward, so that the valve core 23 to be ground, which is installed on the front surface, can contact with a grinding plate 25; a plurality of through holes are uniformly formed in the middle groove in the front surface of the base plate 21 along the circumferential direction, and a valve core adjusting knob 24 is arranged in each through hole, wherein the middle of the valve core adjusting knob 24 is provided with a thread section, the cylindrical end at the upper end of the valve core adjusting knob 24 positioned on the back surface of the base plate 21 can be rotated, and the position of the axis of the bottom end of the valve core adjusting knob 24 protruding on the base plate 21 is adjusted; a valve core support 22 is arranged in a groove on the front surface of the substrate 21, a plurality of inverted cone-shaped holes matched with the through holes of the substrate 21 are formed in the valve core support 22, and the size of each inverted cone-shaped hole is matched with the inverted cone-shaped platform structure of the valve core 23 to be ground; the axial center bulge at the bottom end of the valve core adjusting knob 24 penetrates through the inverted conical hole on the valve core bracket 22 and is matched with the through hole at the center of the valve core 23 by adopting an axle hole, so that the circumferential positioning of the valve core 23 is realized; the valve core adjusting knob 24 is of a magnetic attraction type structure and can be used for preventing the valve core 23 in the magnetic core from falling off from the valve core clamp 3 when the valve core is placed downwards; the upper end surface of the valve core adjusting knob is provided with scale indication which can be used for indicating the longitudinal position of the valve clack in the valve core to be ground;
as shown in fig. 10 and 11, when the valve core 23 to be ground is installed in the conical groove corresponding to the valve core support 22, the valve core to be ground is ensured to be uniformly distributed along the circumferential direction of the valve core clamp, so that the included angles between the central connecting line of any two adjacent valve cores 23 and the clamp are equal, and the uniform stress of each valve core is ensured during grinding; if the valve cores to be ground are in a specific number and cannot be uniformly distributed on the clamp in the circumferential direction, the valve core simulators with the same structural size as the valve cores 23 are added to correct the number of the valve cores.
In the specific work of the valve core grinding device, the front surface of a base plate in a valve core clamp faces downwards and is fixed on a lifting module of a grinding workbench, and each jackscrew of the lifting module is adjusted to enable the valve core clamp to be in a horizontal posture; the air pressure arm of the jacking module moves downwards to screw the jacking nut tightly, so that the valve core clamp is firmly matched with the grinding plate 25; and screwing down the valve core adjusting knob corresponding to each valve core to be ground or the valve core simulator. In the process, the tightness degree of each knob is consistent so as to ensure that the valve clacks to be grinded are uniformly contacted with the grinding surface of the grinding plate and are firmly matched with the grinding surface, thereby ensuring that the surface of the valve core to be grinded is uniformly stressed. If necessary, a tool such as a torque wrench may be used.
After the preparation work is finished, the motor is started, and the track generation mechanism can be ground along the 8-shaped motion. After the grinding is finished, the motor is turned off, the grinding clamp is taken down from the grinding workbench, then, the valve core adjusting knob is rotated to separate the valve core support from the valve core substrate, and then each valve core to be ground can be taken out. The lapping liquid that overflows in the grinding process can be through the flowing back groove automatic collection on the workstation to the waste liquid incasement, can empty the processing after the grinding is accomplished.
Claims (16)
1. The valve core grinding device is characterized by comprising a workbench (1), a track generating mechanism (2) and a valve core clamp (3), wherein the track generating mechanism (2) is arranged on the workbench (1), a grinding plate (25) is arranged at the upper end of the outermost side of the track generating mechanism (2), and the grinding plate (25) can form a certain regular motion track relative to the workbench (1); one surface of the valve core clamp (3) provided with the valve core (23) to be ground is supported and fixed on the grinding plate (25) at the uppermost end of the track generating mechanism (2) through the workbench (1).
2. A valve core grinding device according to claim 1, characterized in that the outermost grinding plate (25) of the track generating mechanism (2) forms an 8-shaped motion track relative to the working table (1).
3. The valve core grinding device according to claim 1 or 2, wherein the track generation mechanism (2) comprises a frame (8), a bottom sliding table (10) and a gear-link mechanism (14), wherein the bottom sliding table (10) is arranged on the frame (8), the gear-link mechanism (14) is arranged on the bottom sliding table (10), the gear-link mechanism (14) comprises a driving wheel (17) and a driven wheel (18), the driving wheel (17) and the driven wheel (18) are engaged with each other and are mounted on the bottom sliding table (10), and a link B (20) and a link A (19) are respectively arranged on the driving wheel (17) and the driven wheel (18); the sliding chute on the grinding plate (25) is connected with the connecting rod A (19) on the driven wheel (18), and the grinding plate (25) in the track generating mechanism (2) is driven to form a motion track relative to the workbench (1) through the rotation of the driving wheel (17).
4. The valve core grinding device according to claim 3, wherein two parallel middle guide rails are further arranged on the bottom plate sliding table (10), the middle sliding table (11) is mounted on the middle guide rails, a sliding groove formed in the middle sliding table (11) is matched with a connecting rod B (20) mounted on a driving wheel (17), the driving wheel (17) drives the connecting rod B (20) to move, the sliding groove of the connecting rod B (20) in the middle sliding table (11) moves relatively, and the middle sliding table (11) is pushed to move along the middle guide rails; two parallel grinding guide rails are further arranged on the middle sliding table (11); grinding slider (26) is installed to lapping plate (25) internal surface, and it has grind spout (27) to open by grinding slider (26), lapping plate (25) are installed on the grinding guide rail on middle part slip table (11) through grinding slider (26), make lapping plate (25) remove for middle part slip table (11), and simultaneously, grind spout (27) cover on connecting rod A (19) from driving wheel (18), through the combined action of middle part slip table (11) and connecting rod A (19), make lapping plate (25) along "8" word orbit motion.
5. The valve core grinding device according to claim 1, wherein the workbench comprises a base (4), a plurality of lifting modules (6) and a tightening module (7), the base (4) is circumferentially provided with the plurality of lifting modules (6), the valve core clamp (3) is supported and fixed on the lifting modules (6), and the levelness and the height of the valve core clamp (3) are adjusted through the lifting modules (6); the jacking module (7) is arranged on the base (4) and can apply pressing force to the valve core clamp (3).
6. A valve core grinding device according to claim 5, characterized in that the base (4) is of a square structure, a groove is formed in the center of the base, and the track generating mechanism (2) is placed in the groove; two lifting modules (6) are respectively arranged at the upper side edge and the lower side edge of the base (4), each lifting module (6) comprises a screw rod and a jackscrew, and the lifting modules (6) can be independently controlled and can be adjusted in height within a certain range; the jacking module (7) comprises an air pressure arm and a jacking nut, the air pressure arm is arranged on the base (4), the jacking nut is arranged on the air pressure arm, and pressing force is applied to the valve core clamp (3) by rotating the jacking nut.
7. The valve core grinding device according to claim 3, characterized in that a bottom guide rail is arranged at the bottom of the frame (8), and the bottom sliding table (10) is arranged on the bottom guide rail through a sliding block (9); threaded through holes are formed in the left side wall and the right side wall of the bottom sliding table (10), a lead screw (12) penetrates through the left threaded through hole and the right threaded through hole of the bottom sliding table (10) in a matching mode, and two ends of the lead screw (12) are supported and fixed on supporting plates on the left side and the right side of the rack (8) through bearings (13); a motor (16) is further arranged on one side of the rack (8), and the motor (16) is connected with the end part of one side of the screw rod (12) through a transmission mechanism (15); the motor (16) is used for rotating forwards and backwards, and the lead screw (12) can be driven to drive the bottom sliding table (10) to reciprocate left and right along the bottom guide rail.
8. The valve core grinding device according to claim 3, wherein two middle guide rails which are parallel to each other are arranged on the bottom sliding tables (10) at the upper end and the lower end of the driving wheel (17), a middle sliding table (11) is arranged on the middle guide rail, a linear sliding groove is formed in the middle sliding table (11), the linear sliding groove is matched with the connecting rod B (20), the grinding motor connected with the driving wheel (17) drives the connecting rod B (20) to move, the sliding groove of the connecting rod B (20) in the middle sliding table (11) moves relatively, and the middle sliding table (11) is pushed to move along the middle guide rail.
9. A valve core grinding device according to claim 3, characterized in that the grinding plate (25) can be provided with different types of grinding paper, and different types of sand paper provided on the grinding plate (25) can be replaced according to the grinding accuracy.
10. A valve core grinding device according to claim 5 or 6, characterized in that the base (4) is provided with an oil discharge groove (5), and grinding fluid overflowing during grinding can be automatically collected into a waste liquid tank through the oil discharge groove (5).
11. A valve core grinding device according to claim 3, characterized in that the position of the connecting rod B (20) on the driving wheel (17) is adjustable, the position of the connecting rod B (20) from the centre of the driving wheel (17) being adjustable, thereby conditioning the radius of the grinding track.
12. The valve core grinding device according to claim 1, characterized in that the valve core clamp (3) comprises a base plate (21) and a valve core support (22), a groove is formed in the center of one side of the base plate (21), a plurality of through holes are formed in the groove, a valve core adjusting knob (24) is arranged in the through holes, the valve core adjusting knob (24) can be connected with the valve core (23) to be ground, and the longitudinal position of the valve core (23) on the base plate (21) is adjusted through the valve core adjusting knob (24).
13. The valve core grinding device according to claim 12, wherein a valve core support (22) is arranged on a groove on one side of the base plate (21), an inverted cone-shaped hole matched with the through hole of the base plate (21) is formed in the valve core support (22), and the inverted cone-shaped hole is matched with the valve core (23) in structure.
14. The valve core grinding device as claimed in claim 13, wherein the valve core adjusting knob (24) has a threaded section in the middle, and by rotating the upper cylindrical end of the valve core adjusting knob (24) on the other side of the slot of the base plate (21), the longitudinal position of the lower axial center of the valve core adjusting knob (24) on the base plate (21) can be adjusted; the lower end axis bulge of the valve core adjusting knob (24) is matched with the central circular hole of the valve core (23) to form shaft hole matching, so that the circumferential positioning of the valve core (23) is realized.
15. A cartridge grinder assembly as claimed in any one of claims 12 to 14, wherein the cartridge adjustment knob (24) is of magnetically attractable construction to which the cartridge (23) is attracted; the upper end surface of the valve core adjusting knob (24) is provided with scale indication.
16. The valve core grinding device according to claim 12, wherein a plurality of through holes are uniformly distributed in the circumferential direction on the groove in the base plate (21), and the valve cores (23) to be ground are uniformly distributed in the circumferential direction along the valve core clamp (3), so that the included angles between the connecting lines of any two adjacent valve cores (23) and the center of the clamp are equal; if the valve cores (23) to be ground are in a specific number and cannot be circumferentially and uniformly distributed on the valve core clamp (3), adding a valve core simulation body with the same structural size as the valve cores (23), and circumferentially and uniformly distributing the valve cores (23) and the valve core simulation body along the valve core clamp (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010611314.0A CN111687745A (en) | 2020-06-29 | 2020-06-29 | Case grinder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010611314.0A CN111687745A (en) | 2020-06-29 | 2020-06-29 | Case grinder |
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| Publication Number | Publication Date |
|---|---|
| CN111687745A true CN111687745A (en) | 2020-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010611314.0A Pending CN111687745A (en) | 2020-06-29 | 2020-06-29 | Case grinder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113319668A (en) * | 2020-12-24 | 2021-08-31 | 周吉 | Double-side polishing machine tool |
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