Grinding wheel fixing device of grinding machine

Abstract

The utility model relates to the field of grinding wheel fixing, and discloses a grinding machine grinding wheel fixing device which comprises a rack, the rack is rotationally connected with a rotating shaft, the rotating shaft is hollow and rotationally connected with a screw rod, the surface of the screw rod is in threaded connection with a driving block, the driving block drives a connecting sleeve to move on the rotating shaft, and a positioning sleeve is further fixedly arranged on the rotating shaft. When the grinding wheel needs to be replaced and detached, a second motor is rotated forwards and reversely, a driving frame is rotated to a proper position before the second motor is started, a driving gear is meshed with a driven gear, and a screw rod is driven by the gears to rotate forwards and reversely, so that a connecting block drives a connecting sleeve to be close to or away from a positioning sleeve; the grinding wheel positioning and dismounting device has the advantages that the structure is simple, the structures are linked, and the grinding wheel is convenient to mount and dismount.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding wheel fixing, in particular to a grinding wheel fixing device for a grinding machine. Background Art

[0002] The grinding wheel is a circular bonded abrasive tool made of abrasives and binders, etc., with a through hole 14 in the center. The grinding wheels produced in factories are mostly mass-produced. The bonded grinding wheels need to be tested for thickness, flatness, etc. after production and molding. Generally, the grinding wheels are clamped and fixed with fasteners such as bolts. However, due to the large number of grinding wheels that need to be tested, each time the grinding wheel is clamped on the rotating shaft, the operation of fixing the grinding wheel is cumbersome, resulting in low detection efficiency.

[0003] The Chinese utility model patent with authorization announcement number CN217530478U discloses a grinding wheel fixing structure for a grinding machine, including a rotating shaft, which is fixedly connected to an external motor, a retaining ring and a grinding wheel body are sleeved on the surface of the rotating shaft, and the retaining ring is fixedly connected to the rotating shaft, and the grinding wheel body is against the left side of the retaining ring. The retaining ring limits the installation range of the grinding wheel body and plays a role of limiting the grinding wheel body; however, the prior art has the following technical problems: first, when fixing and replacing the grinding wheel, it is necessary to rotate a locking nut and a control rod, control the reset spring by controlling the pull ring, and operate the shift bar through the rotating rod, etc. This operation process is frequent, which requires a lot of time to be wasted in the processing operation, reducing the processing efficiency; second, after a long period of work, the reset spring and the universal bead need to be replaced and maintained, increasing the production cost. Utility Model Content

[0004] The utility model aims to provide a grinding wheel fixing device for a grinding machine, which has the effects of simple structure, linkage between structures and convenient installation and removal of the grinding wheel.

[0005] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a grinding wheel fixing device for a grinding machine comprises a frame, the frame is rotatably connected to a rotating shaft, the surface of the rotating shaft is rotatably connected to a grinding wheel, the rotating shaft is hollowly arranged, a screw is rotatably connected inside the rotating shaft, a driving block is threadedly connected to the surface of the screw, the screw is used to drive the driving block to move in the rotating shaft, the driving block is provided with a connecting block penetrating the rotating shaft, the rotating shaft is provided with a guide groove for the connecting block to move, the rotating shaft is coaxially provided with a positioning sleeve for fixing the grinding wheel, the connecting block is connected with a connecting sleeve for fixing the grinding wheel, the grinding wheel is located between the positioning sleeve and the connecting sleeve, the positioning sleeve is threadedly connected with a bolt, the connecting sleeve is provided with a threaded hole for the bolt to be connected, and the grinding wheel is provided with a positioning hole for the bolt to penetrate.

[0006] By adopting the above technical scheme, the rotating shaft is set to be hollow, the screw is sleeved inside the rotating shaft, the driving block is threadedly connected to the surface of the screw and the driving block is located in the cavity formed by the rotating shaft and the screw and moves back and forth, the driving block drives the connecting block to move back and forth in the guide groove provided on the rotating shaft, a positioning sleeve is fixedly provided on the rotating shaft, the connecting block is fixedly connected to the connecting sleeve, the grinding wheel is installed between the positioning sleeve and the connecting sleeve, and the driving block moves inside the rotating shaft under the drive of the screw and drives, so that the connecting block drives the connecting sleeve to approach the positioning sleeve, and by setting threaded holes, positioning holes and bolts, the grinding wheel is pressed against the positioning sleeve by rotating the screw to drive the connecting sleeve, and then it is tightened by bolts, so that the purpose of simple structure and convenient disassembly and installation can be achieved.

[0007] The utility model is further configured as follows: a bearing is fixedly arranged on the inner ring of the rotating shaft, and the end of the screw rod is rotatably connected to the bearing.

[0008] By adopting the above technical solution, a bearing is set, the bearing is fixedly connected to the inner ring of the rotating shaft, and the end of the screw is fixedly connected to the inner ring of the bearing, so that the screw is coaxially rotated and connected to the rotating shaft, thereby achieving the smooth movement of the screw drive block in the rotating shaft.

[0009] The utility model is further configured as follows: the frame is installed with a first motor, a driving wheel is coaxially arranged at the output end of the first motor, a driven wheel is coaxially arranged at the rotating shaft, and the driving wheel is connected to the driven wheel.

[0010] By adopting the above technical solution and providing a driving wheel and a driven wheel, the purpose of the first motor driving the rotating shaft to rotate can be achieved.

[0011] The utility model is further configured as follows: the driving wheel and the driven wheel are both configured as pulleys and the two are connected by a belt.

[0012] By adopting the above technical solution, by arranging both the driving wheel and the driven wheel as pulleys and connecting the driving wheel and the driven wheel with a belt, the purpose of stability when the motor drives the rotating shaft to rotate can be achieved.

[0013] The utility model is further configured as follows: a driven gear is coaxially arranged at the end of the screw rod outside the rotating shaft, a driving frame is hingedly connected to the frame, a second motor is installed on the driving frame, and a driving gear for meshing with the driven gear is coaxially arranged at the output end of the second motor.

[0014] By adopting the above technical solution, a drive frame is set and hinged to the frame. When the screw needs to rotate, the manual drive frame makes the active gear mesh with the driven gear, and then the second motor is turned on. Under the drive of the second motor, the screw rotates. Under the drive of the screw, the connecting block drives the connecting sleeve to move on the rotating shaft. The second motor can realize forward and reverse rotation. The drive screw rotates in different directions in different directions of the second motor, so that the drive block moves in different directions in the rotating shaft, which can achieve the purpose of fastening the grinding wheel between the positioning sleeve and the connecting sleeve on the rotating shaft and driving the connecting sleeve away from the positioning sleeve to take out the grinding wheel.

[0015] The utility model is further configured as follows: a locking plate is fixedly provided on the surface of the rotating shaft close to the second motor, and a locking screw for connecting the locking plate is fixedly provided on the surface of the screw rod.

[0016] By adopting the above technical solution, by setting a locking plate and a locking screw, when the connecting sleeve and the positioning sleeve are fixed, the locking screw is locked on the locking plate. At this time, the positions of the screw and the rotating shaft are relatively fixed. Under the drive of the first motor, the rotating shaft starts to rotate and drives the screw to rotate together, so that the screw does not rotate during the grinding wheel working process, so that the connecting sleeve can press the grinding wheel tightly against the positioning sleeve.

[0017] The beneficial effect of the utility model is that when the grinding wheel needs to be replaced and disassembled, the second motor is rotated forward and reversed respectively, and the driving frame is rotated to a suitable position before the second motor is turned on, and the driving gear is meshed with the driven gear. Under the drive of the gear, the screw realizes forward and reverse rotation, so that the connecting block drives the connecting sleeve to approach or move away from the positioning sleeve, so as to achieve the purpose of positioning and disassembling the grinding wheel. The utility model has the effect of simple structure, linkage between structures and convenient installation and disassembly of the grinding wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments 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 creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a side structural schematic diagram of the utility model.

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0022] Figure 4 yes Figure 3 Schematic diagram of the local structure.

[0023] Figure 5 It is a structural schematic diagram of the position relationship between the screw and the rotating shaft of the utility model.

[0024] Figure 6 It is a partial structural schematic diagram of the utility model.

[0025] In the figure, 1, frame; 11, first motor; 111, driving wheel; 12, driving frame; 13, second motor; 131, driving gear; 2, rotating shaft; 21, grinding wheel; 211, positioning hole; 22, guide groove; 23, positioning sleeve; 231, bolt; 24, bearing; 25, driven wheel; 26, locking plate; 3, screw; 31, driving block; 32, connecting block; 321, connecting sleeve; 322, threaded hole; 33, driven gear; 34, locking screw. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Embodiment, a grinding wheel 21 positioning device, such as Figure 1-Figure 2 As shown, it includes a frame 1, a rotating shaft 2 is rotatably connected to the top of the frame 1, the rotating shaft 2 is hollow, a positioning sleeve 23 for fixing the grinding wheel 21 is fixedly provided on the outer ring of the rotating shaft 2, the positioning sleeve 23 is threadedly connected with a bolt 231, the bolt 231 is used to fix the grinding wheel 21, the outer ring of the rotating shaft 2 is rotatably connected to the grinding wheel 21, the grinding wheel 21 is provided with a positioning hole 211 for the bolt 231 to pass through, the frame 1 is installed with a first motor 11 for driving the rotating shaft 2 to rotate, a driving wheel 111 is coaxially arranged at the output end of the first motor 11, a driven wheel 25 is coaxially arranged at the end of the rotating shaft 2 close to the first motor 11, the driving wheel 111 and the driven wheel 25 are both arranged as pulleys and the two are connected by a belt.

[0028] Further, such as Figure 3-Figure 5As shown, a bearing 24 is coaxially arranged on the inner ring of the rotating shaft 2, and the outer ring of the bearing 24 is fixedly connected to the inner ring of the rotating shaft 2. A screw 3 is sleeved inside the rotating shaft 2, and the screw 3 is fixedly connected to the inner ring of the bearing 24. The screw 3 is coaxially arranged with the rotating shaft 2, and a driving block 31 is threadedly connected to the surface of the screw 3. The driving block 31 is located in the inner cavity formed by the inner ring of the rotating shaft 2 and the screw 3 and moves. The driving block 31 is connected to a connecting block 32. A guide groove 22 for the connecting block 32 to move is provided on the surface of the rotating shaft 2. The connecting block 32 is connected to a connecting sleeve 321 for fixing the grinding wheel 21, and a threaded hole 322 for the bolt 231 to pass through is provided on the connecting sleeve 321.

[0029] Further, such as Figure 6 As shown, the frame 1 is hinged with a driving frame 12, and the driving frame 12 is provided with a second motor 13 for driving the screw 3 to rotate. A driving gear 131 is coaxially arranged at the output end of the second motor 13, and a handle for driving rotation is arranged on the driving frame 12. A driven gear 33 for meshing with the driving gear 131 is coaxially arranged at the end of the screw 3 close to the driving frame 12, and a locking screw 34 is also arranged at the end of the screw 3, and a locking plate 26 for connecting the locking screw 34 is fixedly arranged on the surface of the rotating shaft 2.

[0030] The working principle is as follows: when the grinding wheel 21 needs to be fixed on the device, the grinding wheel 21 is placed between the positioning sleeve 23 and the connecting sleeve 321, the driving frame 12 is manually driven to make the driving gear 131 mesh with the driven gear 33, and the second motor 13 is turned on to make the second motor 13 rotate forward. Under the drive of the second motor 13, the driving gear 131 rotates, and the driving gear 131 drives the driven gear 33 to rotate, and the driven gear 33 drives the screw 3 to rotate in the rotating shaft 2. The rotation of the screw 3 makes the driving block 31 threadably connected to the screw 3 move in the rotating shaft 2 toward the direction close to the positioning sleeve 23, and the driving block 31 drives the connecting block 32 to move together, and the connecting block 32 drives the connecting sleeve 321 to press the grinding wheel 21 against the positioning sleeve 23. After confirming that the grinding wheel 21 is tightly pressed between the two, the second motor 13 is stopped from rotating, and the manual The driving frame 12 makes the driving gear 131 not meshed with the driven gear 33, keeps the position of the screw rod 3, and connects the locking screw 34 with the locking plate 26, so that the position of the screw rod 3 and the rotating shaft 2 is relatively fixed, and then the bolt 231 penetrates the positioning sleeve 23, the grinding wheel 21 and the connecting sleeve 321 to fix the grinding wheel 21, and finally turns on the first motor 11, the first motor 11 drives the rotating shaft 2 to rotate, the rotating shaft 2 drives the screw rod 3 and the grinding wheel 21 to rotate, and the grinding wheel 21 can process the workpiece; when the grinding wheel 21 needs to be removed from the device, the driving gear 131 is also meshed with the driven gear 33, the second motor 13 is turned on and reversed, the second motor 13 reverses so that the screw rod 3 rotates in the opposite direction, the screw 3 drives the driving block 31 to move in the direction away from the positioning sleeve 23, and finally the grinding wheel 21 is removed.

Claims

1. A fixing device for a grinding wheel (21) of a grinding machine, characterized in that: The invention comprises a frame (1), wherein the frame (1) is rotatably connected to a rotating shaft (2), a grinding wheel (21) is rotatably connected to the surface of the rotating shaft (2), the rotating shaft (2) is hollow, a screw (3) is rotatably connected inside the rotating shaft (2), a driving block (31) is threadedly connected to the surface of the screw (3), the screw (3) is used to drive the driving block (31) to move inside the rotating shaft (2), the driving block (31) is provided with a connecting block (32) penetrating the rotating shaft (2), and the rotating shaft (2) is provided with a guide groove (23) for the connecting block (32) to move. 2), the rotating shaft (2) is coaxially provided with a positioning sleeve (23) for fixing the grinding wheel (21), the connecting block (32) is connected with a connecting sleeve (321) for fixing the grinding wheel (21), the grinding wheel (21) is located between the positioning sleeve (23) and the connecting sleeve (321), the positioning sleeve (23) is threadedly connected with a bolt (231), the connecting sleeve (321) is provided with a threaded hole (322) for connection with the bolt (231), and the grinding wheel (21) is provided with a positioning hole (211) for the bolt (231) to penetrate.

2. A device for fixing a grinding wheel (21) for a grinding machine according to claim 1, characterized in that: A bearing (24) is fixedly arranged on the inner ring of the rotating shaft (2), and the end of the screw rod (3) is rotatably connected to the bearing (24).

3. A grinding wheel (21) fixing device for a grinding machine according to claim 1, characterized in that: The frame (1) is installed with a first motor (11), a driving wheel (111) is coaxially arranged at the output end of the first motor (11), a driven wheel (25) is coaxially arranged on the rotating shaft (2), and the driving wheel (111) is connected to the driven wheel (25).

4. A grinding wheel (21) fixing device for a grinding machine according to claim 3, characterized in that: The driving wheel (111) and the driven wheel (25) are both configured as pulleys and are connected via a belt.

5. A grinding wheel (21) fixing device for a grinding machine according to claim 1, characterized in that: A driven gear (33) is coaxially arranged at the end of the screw rod (3) outside the rotating shaft (2); the frame (1) is hingedly connected to a driving frame (12); a second motor (13) is installed on the driving frame (12); and a driving gear (131) for meshing with the driven gear (33) is coaxially arranged at the output end of the second motor (13).

6. A device for fixing a grinding wheel (21) for a grinding machine according to claim 5, characterized in that: A locking plate (26) is fixedly provided on the surface of the rotating shaft (2) close to the second motor (13), and a locking screw (34) for connecting the locking plate (26) is fixedly provided on the surface of the screw rod (3).

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