A multi-station high-efficiency grinding device for valve stem and use method thereof

Abstract

The present invention belongs to the technical field of valve casting processing equipment, and in particular relates to a multi-station high-efficiency grinding device for valve stems and a method for using the same, wherein the grinding device comprises: a frame, a grinding mechanism, and a translation mechanism, wherein a plurality of groups of clamping movable mechanisms are arranged on the frame at intervals along a first direction, each group of clamping movable mechanisms comprises a clamping unit and a switching seat, the clamping unit can clamp a workpiece and drive the workpiece to perform a rotational motion, and the switching seat can switch the clamping unit between a loading position and a processing position; the grinding mechanism can grind the workpiece at the loading position in a second direction; the translation mechanism can drive the grinding mechanism to move in the first direction; compared with the prior art, the grinding device of the present invention can clamp a plurality of workpieces in sequence each time, and can complete the grinding of all workpieces in sequence during the grinding process, and has high processing efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of valve casting processing equipment, and in particular relates to a multi-station high-efficiency grinding device for a valve stem and a use method thereof. Background Art

[0002] The valve stem is a key component in the valve, which connects the operating mechanism and the closing member. Its main function is to transfer the force from the operating mechanism to the closing member to realize the opening or closing action of the valve.

[0003] During the processing of the valve stem, the surface needs to be polished to remove burrs, flash and initial processing marks on the surface to improve the surface finish and dimensional accuracy. However, when the current polishing device is grinding the valve stem, only one valve stem can be polished each time it is clamped. After grinding, the machine needs to be stopped to remove the part, and then re-clamped and polished again, resulting in low processing efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-station high-efficiency grinding device for valve stems and a method of using the same in order to solve the above-mentioned technical problems. The grinding device can clamp multiple workpieces in sequence each time, and can complete the grinding of all workpieces in sequence during the grinding process, with high processing efficiency.

[0005] In view of this, the present invention provides a multi-station high-efficiency grinding device for a valve stem, comprising:

[0006] A frame, on which a plurality of groups of clamping movable mechanisms are arranged at intervals along a first direction, each group of clamping movable mechanisms comprises a clamping unit and a switching seat, the clamping unit can clamp a workpiece and drive the workpiece to perform a rotary motion, and the switching seat can switch the clamping unit between a loading position and a processing position;

[0007] A grinding mechanism, the grinding mechanism can grind the workpiece located at the loading position in the second direction;

[0008] The translation mechanism can drive the grinding mechanism to move in a first direction.

[0009] In the present technical scheme, the workpiece to be polished is clamped on each group of clamping units, and all the clamping units are switched to the processing position. In the processing position, the axis of the workpiece is located in the second direction, and the clamping unit can drive the workpiece to perform rotational motion with its own axis as the center. The surface of the workpiece is then polished by the polishing mechanism, and the polishing mechanism will reciprocate in the second direction to complete the polishing of the workpiece except the clamping part. After one workpiece is polished, the corresponding clamping unit is switched to the loading position, and the polishing mechanism is driven by the translation mechanism to move in the first direction to the processing position of the next clamping unit. This process is repeated until the workpieces on all the clamping units in the first direction are polished, and then the machine is stopped to take out the workpiece and re-clamp it.

[0010] In the above technical solution, further, the clamping unit includes:

[0011] A fixed plate, the fixed plate is arranged on the switching seat;

[0012] A multi-jaw chuck is rotatably mounted on a fixed plate and can coaxially clamp a workpiece;

[0013] The rotary motor can drive the multi-jaw chuck to perform rotary motion.

[0014] In the above technical solution, further, the grinding mechanism includes:

[0015] Grinding wheel, which can grind the surface of the workpiece when it rotates and contacts the workpiece;

[0016] Grinding motor, the grinding motor can drive the grinding wheel to rotate;

[0017] The grinding cylinder can drive the grinding motor and the grinding wheel to move back and forth in the second direction.

[0018] In the above technical solution, further, the translation mechanism includes:

[0019] A translation seat, the translation seat is slidably arranged on the frame along a first direction, and the grinding mechanism is arranged on the translation seat;

[0020] A screw rod, the screw rod is rotatably arranged on the frame, and the axis of the screw rod is parallel to the first direction;

[0021] A transmission seat, the transmission seat is connected with the translation seat, and the transmission seat is connected with the screw rod transmission;

[0022] A power source can drive the screw to rotate.

[0023] In the above technical solution, further, one end of the switching seat is connected to the clamping unit, and the other end of the switching seat is rotatably connected to the frame through a connecting shaft, a gear is arranged on the connecting shaft, a main rack is arranged on the side wall of the transmission seat close to the gear, and a clutch mechanism is arranged between the main rack and the gear, and the clutch mechanism can connect or separate the gear and the main rack.

[0024] In the above technical solution, further, the clutch mechanism includes:

[0025] A mounting seat, the mounting seat is slidably arranged on the frame along a first direction, a side wall of the mounting seat close to a side of the gear is provided with a secondary rack, and the secondary rack is meshedly connected with the gear;

[0026] A mounting groove, the mounting groove is arranged on a side wall of the mounting seat away from the gear;

[0027] A movable seat, the movable seat is slidably arranged in the mounting groove along the second direction, a movable rack is arranged on the side wall of the movable seat close to the main rack, and the movable rack can mesh with the main rack;

[0028] The driving member can drive the movable seat to approach or move away from the main rack.

[0029] In the above technical solution, further, the driving member includes:

[0030] The electromagnet is arranged in the mounting groove. When the electromagnet is powered on, it will generate magnetism and can absorb the movable seat. When the electromagnet is powered off, it will lose magnetism and release the movable seat.

[0031] A guide groove, which is arranged on a side wall of the mounting groove;

[0032] A guide post, the guide post is slidably disposed in the guide groove along the second direction, and the guide post is connected to the movable seat;

[0033] The spring is sleeved on the outside of the guide column, one end of the spring is connected to the side wall of the installation groove, and the other end of the spring is connected to the movable seat.

[0034] In the above technical scheme, further, a first positioning groove is provided on the gear, a through groove connected to the mounting groove is provided on the mounting seat, a second positioning groove parallel to the first positioning groove is provided on the movable seat, a locking rod that can move along a third direction is provided on the frame, and a first locking column and a second locking column are provided at one end of the locking rod away from the switching seat; when the switching seat is in the processing position, the first locking column can be inserted into the first positioning groove along the third direction, and at the same time, the second locking column can pass through the through groove along the third direction and then be inserted into the second positioning groove.

[0035] In the above technical solution, further, one end of the locking rod away from the gear extends along the third direction to above the switching seat, and the switching seat is provided with a retreat groove for the locking rod to enter and exit.

[0036] The present invention also discloses a method for using the grinding device, which comprises the following steps:

[0037] Step 1: Reset the grinding mechanism and switch each set of clamping units to the loading position;

[0038] Step 2: Clamp the workpiece to be polished on each set of clamping units, and switch all the clamping units to the processing position;

[0039] Step 3: Start the translation mechanism to move the grinding mechanism to the processing position of the first group of clamping units, start the grinding mechanism to grind the workpiece on the first group of clamping units, switch the first group of clamping units to the loading position after grinding, move the grinding mechanism to the processing position of the second group of clamping units through the translation mechanism, grind the workpiece on the second group of clamping units through the grinding mechanism, switch the second group of clamping units to the loading position after grinding, move the grinding mechanism to the processing position of the third group of clamping units through the translation mechanism, and grind the workpieces on all clamping units in turn in this way;

[0040] Step 4: After all the workpieces on the clamping units have been polished, the polishing mechanism is reset and the polished workpieces on the clamping units are removed.

[0041] The beneficial effects of the present invention are:

[0042] 1. Multiple groups of clamping movable mechanisms are arranged at intervals along the first direction on the frame, each group of clamping movable mechanisms includes a clamping unit and a switching seat, the clamping unit can clamp the workpiece and drive the workpiece to perform rotational motion, the switching seat can switch the corresponding clamping unit between the processing position and the loading position, so that the workpiece can be clamped on each group of clamping units, a workpiece can be polished by the grinding mechanism, and the grinding mechanism can be driven to move in the first direction by the translation mechanism, which can not only control the grinding accuracy of the workpiece by the grinding mechanism, but also realize the grinding of all workpieces in the first direction in sequence, and the processing efficiency is high.

[0043] 2. By designing the translation mechanism to be a combination of a translation seat, a screw, a transmission seat, and a power source, and by driving the transmission seat to move in the first direction through the power source, the translation seat can be used to drive the grinding mechanism to move in the first direction, thereby achieving precision control of the workpiece grinding and grinding all workpieces in the first direction in turn.

[0044] 3. By designing the switching seat to be able to swing relative to the frame, and driving the switching seat to swing by gears to achieve switching between the loading position and the processing position, by arranging a main rack on the transmission seat, and arranging a clutch mechanism between the main rack and the gear, the clutch mechanism is used to control the connection and separation between the gear and the main rack. In this way, after the grinding of the workpiece on a group of clamping units is completed, the gear is connected to the main rack, and then the transmission seat is driven to move in the first direction by the power source. The transmission seat will drive the gear to rotate, thereby driving the switching seat to swing. When the group of clamping units is switched to the loading position, the gear is separated from the main rack. In this process, the grinding mechanism is also moved to the processing position of the next group of clamping units. In this way, there is no need for workers to manually switch the clamping units, which is convenient to operate and further improves the processing efficiency.

[0045] 4. By designing the clutch mechanism to be a combination of a mounting seat, a secondary rack, a mounting groove, a movable seat, a movable rack, an electromagnet, a guide groove, a guide column, and a spring, the secondary rack is always connected to the gear. In this way, it is only necessary to energize the electromagnet so that the electromagnet generates suction on the movable seat, thereby separating the movable rack from the main rack, thereby achieving separation of the gear from the main rack. The spring will be squeezed in this process. After the electromagnet is powered off, the suction of the electromagnet on the movable seat disappears. At this time, the elastic force of the spring causes the movable seat to move toward the transmission seat and causes the movable rack to mesh with the main rack, thereby achieving connection between the gear and the main rack. Through such a setting, the operating steps of the workers are simplified and the processing efficiency is further improved.

[0046] 5. By setting a first positioning groove on the gear, a second positioning groove on the movable seat, and a locking rod that can move along the third direction on the frame, when the clamping unit is located in the processing position, the locking rod can lock the gear and the movable seat at the same time, which can limit the rotation of the gear, thereby stabilizing the clamping unit in the processing position, thereby ensuring the stability of the workpiece grinding process; when the position of the clamping unit needs to be switched, the locking rod is moved away from the gear in the third direction, so that the gear and the movable seat can be unlocked, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0048] Figure 1 It is a schematic diagram of the three-dimensional structure in the first direction when all the clamping units in the grinding device of the present invention are located at the processing position.

[0049] Figure 2 It is a schematic diagram of the three-dimensional structure in the second direction when all the clamping units in the grinding device of the present invention are located at the processing position.

[0050] Figure 3 It is a schematic diagram of the three-dimensional structure in the third direction when all the clamping units in the grinding device of the present invention are located at the processing position.

[0051] Figure 4 It is a schematic diagram of the top view of the structure in which all the clamping units in the grinding device of the present invention are located at the processing position.

[0052] Figure 5 It is a schematic diagram of the three-dimensional structure in the first direction when the first group of clamping units in the grinding device of the present invention is located at the loading position.

[0053] Figure 6It is a schematic top view of the structure of the first group of clamping units in the grinding device of the present invention at the loading position.

[0054] Figure 7 for Figure 4 Schematic diagram of the cross-section structure along the AA direction.

[0055] Figure 8 It is a schematic diagram of the structure of the clutch mechanism in the disassembled state in the present invention.

[0056] Fig. 9 It is a schematic diagram of the three-dimensional structure of the state in which the locking rod does not lock the gear and the movable seat in the present invention.

[0057] Fig.10 It is a three-dimensional structural schematic diagram of the locking rod locking the gear and the movable seat in the present invention.

[0058] The symbols in the figure are:

[0059] 1. Frame; 2. Clamping unit; 201. Fixed plate; 202. Multi-claw chuck; 203. Rotary motor; 3. Switching seat; 4. Grinding mechanism; 401. Grinding wheel; 402. Grinding motor; 403. Grinding cylinder; 5. Translation mechanism; 501. Translation seat; 502. Screw rod; 503. Transmission seat; 504. Power source; 6. Connecting shaft; 7. Gear; 8. Main rack; 9. Clutch mechanism; 901. Mounting seat; 902. Mounting slot; 903 , auxiliary rack; 904, movable seat; 905, movable rack; 906, through slot; 10, driving member; 1001, electromagnet; 1002, guide slot; 1003, guide column; 1004, spring; 1101, first positioning slot; 1102, second positioning slot; 12, locking rod; 1201, first locking column; 1202, second locking column; 13, retreat slot; 100, workpiece; X, first direction; Y, second direction; Z, third direction; DETAILED DESCRIPTION

[0060] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0062] Example 1

[0063] like Figure 1-Figure 2 As shown, the embodiment of the present application provides a multi-station high-efficiency grinding device for a valve stem, comprising: a frame 1, a grinding mechanism 4, and a translation mechanism 5;

[0064] See also Figure 1 or Figure 2 , a plurality of groups of clamping movable mechanisms are arranged on the frame 1 at intervals along the first direction X, each group of clamping movable mechanisms includes a clamping unit 2 and a switching seat 3, the clamping unit 2 can clamp the workpiece 100 and can drive the workpiece 100 to perform a rotary motion, and the rotary motion here refers to the rotation of the workpiece 100 around its own axis. Any structure in the prior art that can clamp the workpiece 100 and drive the workpiece 100 to perform the above-mentioned rotary motion can be used as the clamping unit 2 in this embodiment; for details, please refer to Figure 1 , this embodiment discloses a structure of a clamping unit 2, the clamping unit 2 includes a fixed plate 201, a multi-claw chuck 202, and a rotary motor 203;

[0065] Among them, the fixed plate 201 is arranged on the switching seat 3; the multi-jaw chuck 202 is rotatably arranged on the fixed plate 201, and the multi-jaw chuck 202 can coaxially clamp the workpiece 100, and the multi-jaw chuck 202 can select a three-jaw chuck, a four-jaw chuck, etc. sold on the market; the rotary motor 203 is installed on the fixed plate 201, and the output shaft of the rotary motor 203 is coaxially connected with the multi-jaw chuck 202, and can drive the multi-jaw chuck 202 to do the above-mentioned rotary motion;

[0066] The switching seat 3 can switch the clamping unit 2 between the loading position and the processing position. In this embodiment, the loading position and the processing position have a certain distance in the second direction Y. The switching seat 3 completes the switching of the clamping unit 2 between the loading position and the processing position through a specific movement mode. This specific movement mode can be a conventional movement mode in the prior art such as rotation, swinging, and linear motion;

[0067] The grinding mechanism 4 can grind the workpiece 100 located at the loading position in the second direction Y. Any structure in the prior art that can repeatedly grind a single workpiece 100 along the axial direction can be used as the grinding mechanism 4 in this embodiment; for details, please refer to Figure 2 , this embodiment discloses a structure of a grinding mechanism 4, the grinding mechanism 4 includes: a grinding wheel 401, a grinding motor 402, and a grinding cylinder 403;

[0068] The grinding wheel 401 is coaxially connected to the output shaft of the grinding motor 402. When the grinding motor 402 is started, it can drive the grinding wheel 401 to rotate. When the grinding wheel 401 rotates and contacts with the workpiece 100, it can grind the surface of the workpiece 100. The grinding cylinder 403 can drive the grinding motor 402 and the grinding wheel 401 to reciprocate in the second direction Y.

[0069] The translation mechanism 5 can drive the grinding mechanism 4 to move in the first direction X. Any structure in the prior art that can drive the grinding mechanism 4 to move back and forth in the first direction X can be used as the translation mechanism 5 in this embodiment, such as using a cylinder drive, a screw rod 502 and a nut to cooperate with each other, etc.

[0070] In this embodiment, a workpiece 100 to be polished is clamped on each group of clamping units 2, and all the clamping units 2 are switched to the processing position. When in the processing position, the axis of the workpiece 100 is located in the second direction Y, and the clamping unit 2 can drive the workpiece 100 to perform a rotational motion with its own axis as the center, and then the surface of the workpiece 100 is polished by the polishing mechanism 4, and the polishing mechanism 4 will reciprocate in the second direction Y to complete the polishing of the workpiece 100 except the clamping part; after the polishing of one workpiece 100 is completed, the corresponding clamping unit 2 is switched to the loading position, and the polishing mechanism 4 is driven by the translation mechanism 5 to move in the first direction X to the processing position of the next clamping unit 2, and the workpiece 100 on all the clamping units 2 in the first direction X is polished repeatedly, and then the machine is stopped to take out the workpiece and re-clamp; through such a processing method, the processing efficiency of the polishing of the workpiece 100 is improved.

[0071] Example 2

[0072] This embodiment provides a multi-station high-efficiency grinding device for a valve stem. In addition to the technical solutions of the above embodiments, a structure of a translation mechanism 5 is also disclosed.

[0073] In this embodiment, the translation mechanism 5 includes: a translation seat 501, a screw rod 502, a transmission seat 503, and a power source 504;

[0074] See also Figure 2, the translation seat 501 is slidably disposed on the frame 1 along the first direction X, the grinding mechanism 4 is disposed on the translation seat 501, specifically, the grinding cylinder 403 is fixed on the translation seat 501, and the grinding motor 402 is slidably disposed on the translation seat 501 along the second direction Y;

[0075] The screw rod 502 is rotatably arranged on the frame 1, and the axis of the screw rod 502 is parallel to the first direction X;

[0076] The transmission seat 503 is connected to the bottom of the translation seat 501. A nut connected to the screw rod 502 is provided on the transmission seat 503, so that when the screw rod 502 rotates, the transmission seat 503 can be driven to move along the first direction X;

[0077] The power source 504 can drive the screw rod 502 to rotate. The power source 504 in this embodiment can be driven by an electric control, such as a motor, or can be driven manually, such as Figure 3 As shown in , a hand wheel is provided at the end of the screw rod 502, and the screw rod 502 is driven to rotate by a worker manually rotating the hand wheel;

[0078] After the grinding device is manufactured, the processing position of each clamping unit 2 is fixed in the first direction X. Therefore, a mark can be made near the processing position of each clamping unit 2, or a positioning structure can be set, so that when the translation mechanism 5 drives the grinding mechanism 4 to move along the first direction X, the grinding mechanism 4 can quickly find the processing position, saving the worker's time in positioning the grinding mechanism 4.

[0079] Example 3

[0080] This embodiment provides a multi-station high-efficiency grinding device for a valve stem. In addition to the technical solutions of the above embodiments, a movement mode of the switching seat 3 is also disclosed.

[0081] In this embodiment, the switching seat 3 switches the clamping unit 2 between the loading position and the processing position by swinging relative to the frame 1.

[0082] For details, please refer to Figure 7 One end of the switching seat 3 is connected to the clamping unit 2, and the other end of the switching seat 3 is rotatably connected to the frame 1 through a connecting shaft 6, and a gear 7 is coaxially arranged on the connecting shaft 6; please refer to Figure 3 A main rack 8 is provided on the side wall of the transmission seat 503 close to the gear 7, and a clutch mechanism 9 is provided between the main rack 8 and the gear 7. The clutch mechanism 9 can connect or separate the gear 7 and the main rack 8;

[0083] In addition, in order to prevent the movements of adjacent switching seats 3 from interfering with each other, please refer to Figure 4The spacing between the two switching seats 3 needs to be greater than the distance from the swing center of the switching seat 3 to the free end of the workpiece 100, so that the clamping unit 2 in the processing position can be moved along the switching seat 3. Figure 4 The machine moves to the loading position by swinging clockwise. Figure 5 and Figure 6 What is shown in FIG. 1 is a schematic diagram of the first group of clamping units 2 switching to the loading position;

[0084] In this embodiment, when the gear 7 is separated from the main rack 8, the screw rod 502 rotates to drive the transmission seat 503 to move, the gear 7 will not be driven, and the switching seat 3 will not swing relative to the frame 1; when the gear 7 is connected to the main rack 8, the screw rod 502 rotates to drive the transmission seat 503 to move, the gear 7 will be driven to make the switching seat 3 swing relative to the frame 1;

[0085] Since the connection between the screw rod 502 and the nut has a certain self-locking property, the screw rod 502 will not rotate without external force driving. Therefore, when grinding a workpiece 100 on a group of clamping units 2, the group of gears 7 can be connected to the main rack 8, so that the gear 7 is locked, thereby improving the stability of the grinding process of the workpiece 100; after grinding a workpiece 100, the grinding wheel 401 can be adjusted in the second direction Y to be separated from the workpiece 100, and the gear 7 is kept connected to the main rack 8. At this time, the screw rod 502 is driven to rotate by the power source 504, and the transmission seat 503 is driven to move the grinding mechanism 4 along the first direction X toward the next workpiece 100. The current switching seat 3 is also driven, so that the current clamping unit 2 is transferred to the loading position with the workpiece 100. When the clamping unit 2 is transferred to the loading position, the gear 7 is separated from the main rack 8, so that the transfer of the polished workpiece 100 is completed while the grinding mechanism 4 is moved. The design is ingenious, the operation steps of the workers are simplified, and the processing efficiency is improved.

[0086] Example 4

[0087] This embodiment provides a multi-station high-efficiency grinding device for a valve stem. In addition to the technical solutions of the above embodiments, a structure of a clutch mechanism 9 is also disclosed.

[0088] In this embodiment, the clutch mechanism 9 includes: a mounting seat 901, a secondary rack 903, a mounting groove 902, a movable seat 904, a movable rack 905, and a driving member 10;

[0089] See also Figure 3 The mounting seat 901 is slidably disposed on the frame 1 along the first direction X, and a secondary rack 903 is disposed on the side wall of the mounting seat 901 close to the gear 7, and the secondary rack 903 is meshedly connected with the gear 7;

[0090] The mounting groove 902 is arranged on the side wall of the mounting seat 901 away from the gear 7;

[0091] The movable seat 904 is slidably arranged in the mounting groove 902 along the second direction Y, and a movable rack 905 is arranged on the side wall of the movable seat 904 close to the main rack 8, and the movable rack 905 can mesh with the main rack 8;

[0092] The driving member 10 can drive the movable seat 904 to move closer to or away from the main rack 8. Any structure in the prior art that can drive the movable seat 904 to adjust its position along a linear direction can be used as the driving member 10 in this embodiment.

[0093] In this embodiment, the auxiliary rack 903 is always engaged with the gear 7. When the gear 7 needs to be connected to the main rack 8, the driving member 10 drives the movable seat 904 to approach the main rack 8, so that the movable rack 905 is engaged with the main rack 8. In this way, during the movement of the transmission seat 503 along the first direction X, the main rack 8 and the movable rack 905 will cooperate to drive the mounting seat 901 to move along the first direction X, thereby driving the gear 7 to rotate through the auxiliary rack 903 on the mounting seat 901, which is equivalent to the gear 7 being indirectly connected to the main rack 8; when the gear 7 needs to be separated from the main rack 8, the driving member 10 drives the movable seat 904 away from the main rack 8, so that the movable rack 905 is separated from the main rack 8. In this way, during the movement of the transmission seat 503 along the first direction X, the mounting seat 901 will not be driven to move, and the gear 7 will not be driven to rotate, that is, the separation of the gear 7 and the main rack 8 is completed.

[0094] Example 5

[0095] This embodiment provides a multi-station high-efficiency grinding device for a valve stem. In addition to the technical solutions of the above embodiments, a structure of a driving member 10 is also disclosed.

[0096] In this embodiment, the driving member 10 includes: an electromagnet 1001, a guide groove 1002, a guide column 1003, and a spring 1004;

[0097] See also Figure 8 The electromagnet 1001 is arranged in the mounting groove 902, and a metal structure (not shown in the figure) that can be attracted by magnetism is arranged on the movable seat 904 at a position opposite to the electromagnet 1001. The electromagnet 1001 will generate magnetism and can absorb the movable seat 904 when powered on, and will lose magnetism and release the movable seat 904 when powered off;

[0098] Two guide grooves 1002 are arranged at intervals on the side wall of the mounting groove 902 close to the gear 7; two guide posts 1003 are arranged on the side wall of the movable seat 904 close to the guide groove 1002, and the two guide posts 1003 are respectively opposite to the two guide grooves 1002, and the two guide posts 1003 are respectively slidably arranged in the two guide grooves 1002 along the second direction Y;

[0099] The spring 1004 is sleeved on the outside of the guide column 1003, one end of the spring 1004 is connected to the side wall of the mounting groove 902, and the other end of the spring 1004 is connected to the movable seat 904;

[0100] In this embodiment, when the electromagnet 1001 is energized, the electromagnet 1001 generates suction on the metal structure to move the movable seat 904 toward the gear 7, so that the movable rack 905 is separated from the main rack 8. In this process, the spring 1004 is squeezed and accumulates elastic force; after the electromagnet 1001 is powered off, the suction of the electromagnet 1001 on the metal structure disappears, and the movable seat 904 will move away from the gear 7 under the action of the elastic force of the spring 1004, so that the movable rack 905 is connected to the main rack 8.

[0101] In this embodiment, a control button can be centrally arranged on the frame 1 to control the on / off power of the electromagnet 1001. Each group of driving parts 10 corresponds to a control button, so that the worker only needs to stand on one side of the frame 1 to control all the clutch mechanisms 9 at the same time, which is more labor-saving.

[0102] Example 6

[0103] This embodiment provides a multi-station high-efficiency grinding device for a valve stem. In addition to the technical solutions of the above embodiments, the structure of the clutch mechanism 9 is optimized.

[0104] See also Figure 8 The gear 7 is provided with a first positioning groove 1101, the mounting seat 901 is provided with a through groove 906 connected to the mounting groove 902, the movable seat 904 is provided with a second positioning groove 1102 parallel to the first positioning groove 1101, and the frame 1 is provided with a locking rod 12 that can move along the third direction Z, see Fig. 9 The locking rod 12 is in an inverted Y shape as a whole, and the lower end of the locking rod 12 has a first locking column 1201 and a second locking column 1202;

[0105] In this embodiment, please refer to Fig. 9 When the switching seat 3 is in the processing position, the first locking column 1201 can be inserted into the first positioning groove 1101 along the third direction Z, and the second locking column 1202 can pass through the through groove 906 along the third direction Z and then be inserted into the second positioning groove 1102, thereby locking the gear 7 and the movable seat 904. The locking state is as follows: Fig.10 As shown;

[0106] In this embodiment, the through slot 906 is mainly used to allow the second locking column 1202 to pass through the installation slot 902 and then connect with the second positioning slot 1102. Therefore, the transverse cross-sectional area of ​​the through slot 906 only needs to be larger than the transverse cross-sectional area of ​​the second locking column 1202.

[0107] In this embodiment, the locking rod 12 has a certain weight, and the direction of gravity is in the third direction Z. Figure 7 When one of the two positioning grooves is not aligned with the corresponding locking column, the two locking columns cannot be inserted into the corresponding positioning groove. When the first positioning groove 1101 is aligned with the first locking column 1201, and the second positioning groove 1102 is also aligned with the second locking column 1202, the locking rod 12 can move downward under the action of gravity, so that the first locking column 1201 and the second locking column 1202 are respectively inserted into the first positioning groove 1101 and the second positioning groove 1102, so that the locking rod 12 can automatically lock the gear 7 and the movable seat 904.

[0108] The upper end of the locking rod 12 extends above the frame 1, and the worker can manually pull the locking rod 12 upward to unlock the gear 7 and the movable seat 904;

[0109] In this embodiment, in order to reduce the difficulty of the two locking posts being inserted into the corresponding positioning grooves, please refer to Fig. 9 , chamfer or bevel are processed at the notches of the two positioning grooves, and chamfer or bevel are also processed at the lower ends of the two locking columns, so that the locking columns are conveniently inserted into the corresponding positioning grooves;

[0110] In this embodiment, although workers need to manually operate to unlock the gear 7 and the movable seat 904, the stability of the grinding process of the workpiece 100 can be further improved. During the grinding process of the workpiece 100, the gear 7 does not need to be connected to the main rack 8, which is also convenient for adjusting the grinding accuracy during the grinding process; and, when the locking rod 12 locks the gear 7 and the movable seat 904, cutting off the power to the electromagnet 1001 will not cause the gear 7 to be connected to the main rack 8. In this way, when it is necessary to move the grinding mechanism 4 without changing the position of the clamping unit 2, the electromagnet 1001 does not need to always remain energized, thereby saving more electricity.

[0111] Example 7

[0112] This embodiment provides a multi-station high-efficiency grinding device for a valve stem. In addition to the technical solutions of the above embodiments, the structure of the clutch mechanism 9 is further optimized.

[0113] In this embodiment, please refer to Figure 2, one end of the locking rod 12 away from the gear 7 extends along the third direction Z to above the switching seat 3, and the switching seat 3 is provided with a retreat groove 13 for the locking rod 12 to enter and exit;

[0114] The movement direction of the locking rod 12 is along the third direction Z. After the retreat groove 13 is provided, the switching seat 3 will not contact the locking rod 12 during the swinging process, so that the function of the locking rod 12 can be smoothly realized.

[0115] Example 8

[0116] This embodiment provides a method for using a multi-station high-efficiency grinding device for a valve stem, which is applicable to the grinding device in the above-mentioned embodiment. The method includes the following steps:

[0117] Step 1: Reset the grinding mechanism 4 and switch each group of clamping units 2 to the loading position;

[0118] Step 2: clamp the workpiece 100 to be polished on each set of clamping units 2, and switch all the clamping units 2 to the processing position;

[0119] Step 3: Start the translation mechanism 5 to move the grinding mechanism 4 to the processing position of the first group of clamping units 2, start the grinding mechanism 4 to grind the workpiece 100 on the first group of clamping units 2, switch the first group of clamping units 2 to the loading position after grinding, move the grinding mechanism 4 to the processing position of the second group of clamping units 2 through the translation mechanism 5, grind the workpiece 100 on the second group of clamping units 2 through the grinding mechanism 4, switch the second group of clamping units 2 to the loading position after grinding, move the grinding mechanism 4 to the processing position of the third group of clamping units 2 through the translation mechanism 5, and grind the workpiece 100 on all clamping units 2 in turn in this way;

[0120] Step 4: After all the workpieces 100 on the clamping units 2 have been polished, the polishing mechanism 4 is reset, and the polished workpieces 100 on the clamping units 2 are removed;

[0121] If the present embodiment adopts the grinding device of embodiment 6, in step one, the grinding mechanism 4 may not be reset in the initial state, but the grinding mechanism 4 may be left near the processing position of the last group of clamping units 2. Thus, in step two, after the workpiece 100 is clamped on each group of clamping units 2, the gear 7 corresponding to the last group of clamping units 2 may be connected to the main rack 8, and then the grinding mechanism 4 may be driven to move toward the penultimate group of clamping units 2. During this process, the last group of clamping units 2 may be transferred to the processing position driven by the transmission seat 503. At this time, the electromagnet 1001 corresponding to the last group of clamping units 2 is energized to separate the gear 7 corresponding to the last group of clamping units 2 from the main rack 8, and the second positioning groove 1102 is aligned with the first positioning groove 1103. The two locking columns 1202 are positioned relative to each other, and at this time, the locking rod 12 will lock the gear 7 corresponding to the last group of clamping units 2 with the movable seat 904, so that the last group of clamping units 2 is stabilized in the processing position. At the same time, the gear 7 corresponding to the penultimate group of clamping units 2 is connected to the main rack 8, and the grinding mechanism 4 is driven to move toward the third-to-last group of clamping units 2. The above operation is repeated, and all the clamping units 2 are switched to the processing position, and finally the grinding mechanism 4 returns to the initial position; in this way, there is no need for workers to manually switch the positions of all the clamping units 2. The workers only need to control the corresponding electromagnet 1001 to turn on / off power and drive the grinding mechanism 4 to reset, which reduces the labor intensity of workers and improves processing efficiency;

[0122] In step three, the clamping unit 2 corresponding to the polished workpiece 100 is switched to the loading position. The method in Example 3 can be used to transfer the polished workpiece 100 while moving the polishing mechanism 4.

[0123] Through the technical solution of this embodiment, the labor intensity of workers can be reduced and the efficiency of grinding processing of the workpiece 100 can be improved.

[0124] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A multi-station high-efficiency grinding device for valve stems, characterized in that: include: A frame (1), wherein a plurality of groups of clamping movable mechanisms are arranged on the frame (1) at intervals along a first direction (X), each group of the clamping movable mechanisms comprising a clamping unit (2) and a switching seat (3), the clamping unit (2) being capable of clamping a workpiece (100) and driving the workpiece (100) to perform a rotary motion, and the switching seat (3) being capable of switching the clamping unit (2) between a loading position and a processing position; A grinding mechanism (4), wherein the grinding mechanism (4) can grind the workpiece (100) located at the loading position in the second direction (Y); A translation mechanism (5), wherein the translation mechanism (5) can drive the grinding mechanism (4) to move in a first direction (X).

2. The multi-station high-efficiency grinding device for valve stem according to claim 1 is characterized in that: The clamping unit (2) comprises: A fixing plate (201), wherein the fixing plate (201) is arranged on the switching seat (3); A multi-jaw chuck (202), wherein the multi-jaw chuck (202) is rotatably disposed on the fixed plate (201), and the multi-jaw chuck (202) can coaxially clamp the workpiece (100); A rotary motor (203), wherein the rotary motor (203) can drive the multi-jaw chuck (202) to perform a rotary motion.

3. The multi-station high-efficiency grinding device for valve stem according to claim 1 is characterized in that: The grinding mechanism (4) comprises: A grinding wheel (401), wherein the grinding wheel (401) is capable of grinding the surface of the workpiece (100) when rotating and contacting the workpiece (100); A grinding motor (402), wherein the grinding motor (402) can drive the grinding wheel (401) to rotate; A grinding cylinder (403), wherein the grinding cylinder (403) can drive the grinding motor (402) and the grinding wheel (401) to move back and forth in a second direction (Y).

4. The multi-station high-efficiency grinding device for valve stem according to claim 1 is characterized in that: The translation mechanism (5) comprises: A translation seat (501), the translation seat (501) is slidably arranged on the frame (1) along a first direction (X), and the grinding mechanism (4) is arranged on the translation seat (501); A screw rod (502), the screw rod (502) being rotatably disposed on the frame (1), and the axis of the screw rod (502) being parallel to the first direction (X); A transmission seat (503), the transmission seat (503) is connected to the translation seat (501), and the transmission seat (503) is transmission-connected to the screw rod (502); A power source (504), wherein the power source (504) can drive the screw rod (502) to rotate.

5. The multi-station high-efficiency grinding device for valve stem according to claim 4 is characterized in that: One end of the switching seat (3) is connected to the clamping unit (2), and the other end of the switching seat (3) is rotatably connected to the frame (1) via a connecting shaft (6); a gear (7) is provided on the connecting shaft (6); a main rack (8) is provided on the side wall of the transmission seat (503) close to the gear (7); a clutch mechanism (9) is provided between the main rack (8) and the gear (7); and the clutch mechanism (9) can connect or disconnect the gear (7) and the main rack (8).

6. The multi-station high-efficiency grinding device for valve stem according to claim 5, characterized in that: The clutch mechanism (9) comprises: A mounting seat (901), the mounting seat (901) being slidably arranged on the frame (1) along a first direction (X), a secondary rack (903) being arranged on a side wall of the mounting seat (901) close to the gear (7), the secondary rack (903) being meshingly connected with the gear (7); A mounting groove (902), the mounting groove (902) being arranged on a side wall of the mounting seat (901) away from the gear (7); A movable seat (904), the movable seat (904) being slidably arranged in the mounting groove (902) along the second direction (Y), a movable rack (905) being arranged on a side wall of the movable seat (904) close to the main rack (8), and the movable rack (905) being capable of meshing with the main rack (8); A driving member (10), wherein the driving member (10) can drive the movable seat (904) to move closer to or away from the main rack (8).

7. The multi-station high-efficiency grinding device for valve stem according to claim 6, characterized in that: The driving member (10) comprises: An electromagnet (1001), wherein the electromagnet (1001) is arranged in the mounting groove (902), and when powered on, the electromagnet (1001) generates magnetism and can adsorb the movable seat (904), and when powered off, the electromagnet (1001) loses magnetism and releases the movable seat (904); A guide groove (1002), wherein the guide groove (1002) is arranged on a side wall of the mounting groove (902); A guide post (1003), wherein the guide post (1003) is slidably disposed in the guide groove (1002) along a second direction (Y), and the guide post (1003) is connected to the movable seat (904); A spring (1004), wherein the spring (1004) is sleeved on the outside of the guide column (1003), one end of the spring (1004) is connected to the side wall of the mounting groove (902), and the other end of the spring (1004) is connected to the movable seat (904).

8. The multi-station high-efficiency grinding device for valve stem according to claim 6, characterized in that: The gear (7) is provided with a first positioning groove (1101), the mounting seat (901) is provided with a through groove (906) connected to the mounting groove (902), the movable seat (904) is provided with a second positioning groove (1102) distributed in parallel with the first positioning groove (1101), the frame (1) is provided with a locking rod (12) movable along a third direction (Z), and the locking rod (12) is provided with a first locking column (1201) and a second locking column (1202) at one end away from the switching seat (3); when the switching seat (3) is located in the processing position, the first locking column (1201) can be inserted into the first positioning groove (1101) along the third direction (Z), and the second locking column (1202) can pass through the through groove (906) along the third direction (Z) and then be inserted into the second positioning groove (1102).

9. The multi-station high-efficiency grinding device for valve stem according to claim 8, characterized in that: One end of the locking rod (12) away from the gear (7) extends along a third direction (Z) to above the switching seat (3), and the switching seat (3) is provided with a retreat groove (13) for the locking rod (12) to enter and exit.

10. A method for using a multi-station high-efficiency grinding device for a valve stem, applicable to the grinding device according to any one of claims 1 to 9, characterized in that: The method of use includes the following steps: Step 1: Reset the grinding mechanism (4) and switch each set of clamping units (2) to the loading position; Step 2: clamping the workpiece (100) to be polished on each set of clamping units (2), and switching all the clamping units (2) to the processing position; Step 3: Start the translation mechanism (5) to move the grinding mechanism (4) to the processing position of the first group of clamping units (2), start the grinding mechanism (4) to grind the workpiece (100) on the first group of clamping units (2), switch the first group of clamping units (2) to the loading position after grinding, move the grinding mechanism (4) to the processing position of the second group of clamping units (2) through the translation mechanism (5), grind the workpiece (100) on the second group of clamping units (2) through the grinding mechanism (4), switch the second group of clamping units (2) to the loading position after grinding, move the grinding mechanism (4) to the processing position of the third group of clamping units (2) through the translation mechanism (5), and grind the workpieces (100) on all the clamping units (2) in turn in this way; Step 4: After all the workpieces (100) on the clamping units (2) have been polished, the polishing mechanism (4) is reset and the polished workpieces (100) on the clamping units (2) are removed.

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