Polishing and grinding device for motor shell

Abstract

The invention relates to the technical field of grinding, in particular to a motor shell polishing and grinding device which comprises a shell, a first grinding assembly and a second grinding assembly are arranged in the shell, and the first grinding assembly and the second grinding assembly are arranged in a bilateral symmetry mode and are the same in structure. The first grinding assembly comprises an upper chain wheel and a lower chain wheel which are arranged in a vertically spaced mode, the axis of the upper chain wheel and the axis of the lower chain wheel both extend in the front-back direction, the upper chain wheel and the lower chain wheel are jointly sleeved with a chain, and a plurality of grinding units are evenly distributed in the circumferential direction of the chain. Each grinding unit comprises a plurality of supporting shafts extending in the front-back direction, the supporting shafts are evenly distributed in the up-down direction and fixedly arranged on the chain, the number of the supporting shafts is larger than or equal to four, rotating rollers are rotationally arranged on the supporting shafts located at the uppermost end and the lowermost end in the same grinding unit, and the two rotating rollers are jointly sleeved with a grinding belt. The service life of the polishing belt is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of polishing, and in particular to a motor housing polishing device. Background Art

[0002] The polishing of the motor housing workpiece is usually carried out by a polishing device, on which a grinding belt is rotated. However, there is a large speed difference between the existing grinding belt and the grinding surface of the motor housing workpiece when they first come into contact, which makes the abrasive on the grinding belt easy to produce strong wear, and then the abrasive grains on the grinding belt fall off or break due to impact, thereby affecting the subsequent polishing effect. Summary of the invention

[0003] Based on this, it is necessary to provide a motor housing polishing and grinding device to address the current technical problems.

[0004] The above purpose is achieved through the following technical solutions: A motor housing polishing and grinding device comprises a shell, wherein a first grinding assembly and a second grinding assembly are arranged inside the shell, the first grinding assembly and the second grinding assembly are symmetrically arranged and have the same structure, a grinding space is formed between the first grinding assembly and the second grinding assembly, the first grinding assembly comprises an upper sprocket and a lower sprocket arranged at intervals from top to bottom, the axes of the upper sprocket and the lower sprocket both extend in the front-to-back direction, a chain is commonly sleeved on the upper sprocket and the lower sprocket, a first driving mechanism is arranged on the shell, the first driving mechanism is used to drive the upper sprocket to rotate, the rotation of the upper sprocket drives the chain and the lower sprocket to rotate synchronously, a plurality of grinding units are evenly distributed on the circumference of the chain, the grinding unit comprises a plurality of support shafts extending in the front-to-back direction, the support shafts are evenly distributed in the up-down direction and fixedly arranged on the chain, the number of the support shafts is greater than or equal to four, rollers are rotatably provided on the support shafts located at the uppermost and the lowermost ends of the same grinding unit, a grinding belt is commonly sleeved on the two rollers, and the grinding belt is used to grind the workpiece placed in the grinding space.

[0005] Furthermore, a support block is fixedly provided on the support shaft located in the middle position of the same grinding unit, and the support block is used to support the grinding belt.

[0006] Furthermore, an upper inner rotating shaft is provided inside the upper sprocket for sliding back and forth, and a lower inner rotating shaft is provided inside the lower sprocket for sliding back and forth. An adjusting component is jointly sleeved on the outside of the upper inner rotating shaft and the lower inner rotating shaft. The adjusting component includes a rotating belt. A plurality of clamping roller groups are arranged at circumferential intervals on the rotating belt. The clamping roller groups correspond to the grinding belts one by one. The clamping roller groups include a fixed rod, which is fixedly provided on the rotating belt and is perpendicular to the rotating belt. A fixed roller is fixedly provided on the fixed rod, and the fixed roller is located inside the grinding belt. A rotating roller is also slidably provided on the fixed rod, and the rotating roller is located outside the grinding belt. The rotating roller can slide relative to the fixed roller, and can rotate when the rotating roller is away from the fixed roller, and stops rotating when the rotating roller approaches the fixed roller.

[0007] Furthermore, the fixed rod is provided with a slide groove extending along its length direction, the rotating roller is provided with a rotating shaft inside, the end of the rotating shaft extends into the slide groove and can slide along the slide groove, the fixed rod is provided with a limiting rod, the rotating roller is fixedly provided with a limiting wheel, the limiting wheel is provided with a plurality of limiting grooves, the limiting grooves are matched with the limiting rod to stop rotation, and the slide groove is provided with a compression spring, the compression spring can push the rotating shaft to make the rotating roller move toward the direction close to the fixed roller, thereby making the limiting wheel on the rotating roller cooperate with the limiting rod to stop rotation.

[0008] Furthermore, the upper inner rotating shaft and the lower inner rotating shaft are both provided with transmission ring grooves, and the rotating belt is rotatably arranged in the transmission ring grooves.

[0009] Furthermore, a cam is provided on the shell, and adjustment plates are provided on the left and right sides of the cam. A reset spring is connected between the two adjustment plates, and the reset spring has a tendency to make the two adjustment plates approach each other. The two adjustment plates are both located inside the rotating belt. The adjustment plate can push the rotating belt, so that the rotating roller moves away from the fixed roller under the push of the grinding belt, and then the limiting wheel on the rotating roller disengages from the limiting rod.

[0010] Furthermore, a second driving mechanism is provided on the housing, and the second driving mechanism is used to drive the cam to rotate.

[0011] Furthermore, the upper inner rotating shaft and the lower inner rotating shaft are both provided with a stop ring, and a plurality of clamping columns are provided on the circumference of the stop ring. The upper sprocket and the lower sprocket are both provided with a plurality of clamping holes. The clamping columns and the clamping holes extend in the front-to-back direction and correspond one to one, so that the upper inner rotating shaft and the upper sprocket can rotate synchronously, and the lower inner rotating shaft and the lower sprocket can rotate synchronously.

[0012] Furthermore, a third driving mechanism is provided on the shell, and the third driving mechanism can synchronously drive the upper inner rotating shaft to slide relative to the upper sprocket, and the lower inner rotating shaft to slide relative to the lower sprocket.

[0013] Furthermore, the chain includes a plurality of hinged links, each of which is provided with a transmission hole, and each of the upper sprocket and the lower sprocket is provided with transmission teeth, the transmission teeth are snap-fitted with the transmission holes, and the chain link is also provided with a fixing hole, and the support shaft is fixedly disposed in the fixing hole.

[0014] The beneficial effects of the present invention are: The motor housing polishing and grinding device provided by the present invention has multiple split polishing belts, so that in the initial stage of polishing, the multiple polishing belts can rotate while revolving with the chain, thereby avoiding a large speed difference when the polishing belt contacts the workpiece, reducing initial wear and extending the service life of the polishing belt; at the same time, the split setting can release the stress on the polishing belt during polishing and reduce the probability of damage to the polishing belt.

[0015] Secondly, when it is necessary to switch the grinding surface of each grinding belt, the third driving mechanism is controlled to drive the upper inner rotating shaft and the lower inner rotating shaft to slide back and forth, so that the clamping column of the upper inner rotating shaft is disengaged from the clamping hole of the upper sprocket, and the clamping column of the lower inner rotating shaft is disengaged from the clamping hole of the lower sprocket, so that the rotating belt no longer rotates synchronously with the chain. The clamping roller group clamps the grinding belt, so that the contact position of the grinding belt and each support shaft changes, and then the grinding surface of the grinding belt changes, thereby avoiding serious wear of local positions of each grinding belt and extending the service life of each grinding belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a motor housing polishing and grinding device provided by an embodiment of the present invention; Figure 2 An exploded diagram of the structure of a motor housing polishing and grinding device provided by one embodiment of the present invention; Figure 3 A schematic top view of a motor housing polishing and grinding device provided in one embodiment of the present invention; Figure 4 for Figure 3 Middle AA section view; Figure 5 An exploded view of the structure of a first grinding unit in a motor housing polishing and grinding device provided in one embodiment of the present invention; Figure 6 A cross-sectional view of a first grinding unit in a motor housing polishing and grinding device provided in one embodiment of the present invention; Figure 7 for Figure 6 A magnified view of the structure at C in the middle; Figure 8 A side view of a first grinding unit in a motor housing polishing and grinding device provided by an embodiment of the present invention; Fig. 9 for Figure 8 A magnified view of the structure at D in the middle; Fig.10 for Fig. 9 Another state diagram of ; Fig.11 A schematic diagram of the structure of a clamping roller group in a motor housing polishing and grinding device provided in one embodiment of the present invention; Fig.12 A schematic structural diagram of a chain link in a motor housing polishing and grinding device provided in one embodiment of the present invention.

[0017] in: 100, frame; 200, first grinding assembly; 300, reciprocating cylinder; 400, first feeding assembly; 401, first long groove; 402, fixed clamping plate; 403, movable clamping plate; 500, second feeding assembly; 501, first slide rail; 502, second long groove; 600, workpiece; 700, hydraulic cylinder; 800, second slide rail; 900, cam; 1000, housing; 201, adjustment plate; 2011, return spring; 202, upper sprocket; 2021, transmission shaft; 203, upper inner shaft; 204, grinding unit; 2041, grinding belt; 20 42. Support shaft; 2043. Roller; 2044. Support block; 205. Adjustment assembly; 2051. Rotating belt; 2052. Clamping roller group; 20521. Fixed roller; 20522. Rotating roller; 20523. Fixed rod; 20524. Compression spring; 20525. Slide; 20526. Limiting wheel; 20527. Limiting rod; 206. Chain link; 2061. Transmission hole; 2062. Fixed hole; 2063. Articulated hole; 207. Lower sprocket; 208. Lower inner shaft; 209. Snap-in hole; 210. Transmission ring groove; 211. Snap-in column. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0020] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0021] like Figures 1 to 12As shown, a motor housing polishing and grinding device provided by an embodiment of the present invention is arranged on a frame 100, which includes a shell 1000, wherein a first polishing assembly 200 and a second polishing assembly are arranged inside the shell 1000, the first polishing assembly 200 and the second polishing assembly are arranged symmetrically and have the same structure, a polishing space is provided between the first polishing assembly 200 and the second polishing assembly, the first polishing assembly 200 includes an upper sprocket 202 and a lower sprocket 207 arranged at intervals up and down, the axes of the upper sprocket 202 and the lower sprocket 207 both extend in the front-to-back direction, a chain is commonly sleeved on the upper sprocket 202 and the lower sprocket 207, a first driving mechanism is provided on the shell 1000, and the first driving mechanism is used to drive the upper sprocket 202 to rotate, The upper sprocket 202 is fixed with a transmission shaft 2021, and the first driving mechanism is connected to the transmission shaft 2021. The rotation of the upper sprocket 202 can drive the chain and the lower sprocket 207 to rotate synchronously. The chain is evenly distributed with multiple grinding units 204 in the circumference. The grinding units 204 include multiple support shafts 2042 extending in the front-back direction. The support shafts 2042 are evenly distributed in the up-down direction and fixedly arranged on the chain. The number of the support shafts 2042 is greater than or equal to four. The support shafts 2042 at the uppermost and lowermost ends of the same grinding unit 204 are both rotatably provided with rollers 2043. The two rollers 2043 are jointly sleeved with a grinding belt 2041. The grinding belt 2041 is used to grind the workpiece 600 placed in the grinding space. The workpiece 600 is a motor housing 1000 to be polished. The upper sprocket 202, the lower sprocket 207 and the chain are each provided with two front and rear chains, and the plurality of grinding units 204 are located between the two front and rear chains.

[0022] In this way, by setting up multiple split grinding belts 2041, in the initial stage of grinding, the multiple grinding belts 2041 can rotate while revolving with the chain, thereby avoiding a large speed difference when the grinding belt contacts the workpiece 600, reducing initial wear, and extending the service life of the grinding belt 2041; at the same time, the split setting can release the stress on the grinding belt 2041 during grinding, reducing the probability of damage to the grinding belt 2041.

[0023] A support plate is fixedly provided on the frame 100, and a second slide rail 800 is provided on the support plate. A second feeding assembly 500 is slidably provided on the second slide rail 800. The second feeding assembly 500 is a second feeding plate. A second long groove 502 is provided at the bottom of the second feeding plate, and the second long groove 502 slides along the second slide rail 800. A first slide rail 501 is provided on the top of the second feeding plate, and a first feeding assembly 400 is slidably provided on the first slide rail 501. The first feeding assembly 400 includes a first feeding plate, a fixed clamping plate 402 is fixedly provided on the first feeding plate, and a first long groove 401 is provided on the first feeding plate, a movable clamping plate 403 is slidably provided in the first long groove 401, and the workpiece 600 is clamped between the fixed clamping plate 402 and the movable clamping plate 403. The second feeding plate is provided with a reciprocating cylinder 300, which can drive the first feeding plate to move back and forth, so as to realize the reciprocating grinding of the workpiece 600 between the first grinding assembly 200 and the second grinding assembly. The support plate is provided with a hydraulic cylinder 700, which can drive the second feeding plate to move back and forth, so as to adjust the front and rear position of the workpiece 600.

[0024] In one embodiment, a support block 2044 is fixedly disposed on each support shaft 2042 at the middle position in the same grinding unit 204, and the support block 2044 is used to support the grinding belt 2041. This prevents the middle part of the grinding belt 2041 from being sunken, thereby ensuring the grinding effect.

[0025] In one embodiment, an upper inner shaft 203 is provided inside the upper sprocket 202 for sliding back and forth, and a lower inner shaft 208 is provided inside the lower sprocket 207 for sliding back and forth. An adjustment assembly 205 is provided outside the upper inner shaft 203 and the lower inner shaft 208. Figure 5 and 11As shown, the adjustment component 205 includes a rotating belt 2051 , and a plurality of clamping roller groups 2052 are arranged at intervals in the circumferential direction of the rotating belt 2051 , and the clamping roller groups 2052 correspond to the grinding belt 2041 one by one. The clamping roller group 2052 includes a fixed rod 20523, which is fixedly arranged on the rotating belt 2051 and is perpendicular to the rotating belt 2051. A fixed roller 20521 is fixedly arranged on the fixed rod 20523, and the fixed roller 20521 is located inside the grinding belt 2041. A rotating roller 20522 is also slidably arranged on the fixed rod 20523, and the rotating roller 20522 is located outside the grinding belt 2041. The rotating roller 20522 can slide relative to the fixed roller 20521. When the rotating roller 20522 is away from the fixed roller 20521, the rotating roller 20522 can rotate, and when the rotating roller 20522 is close to the fixed roller 20521, the rotating roller 20522 stops rotating. When the rotating roller 20522 is able to rotate, the grinding belt 2041 is able to rotate by itself, so that the speed difference between the grinding belt 2041 and the workpiece 600 is reduced, thereby reducing damage to the grinding belt 2041.

[0026] In one embodiment, if Fig.11 As shown, the fixed rod 20523 is provided with a slide groove 20525 extending along its length direction, and the rotating roller 20522 is internally provided with a rotating shaft, and the end of the rotating shaft extends into the slide groove 20525 and can slide along the slide groove 20525, and the fixed rod 20523 is provided with a limiting rod 20527, and the rotating roller 20522 is fixedly provided with a limiting wheel 20526, and the limiting wheel 20526 is provided with a plurality of limiting grooves, and the limiting grooves are engaged with the limiting rod 20527 to prevent rotation, and the slide groove 20525 is provided with a compression spring 20524, and the compression spring 20524 can push the rotating shaft, so that the rotating roller 20522 moves toward the direction close to the fixed roller 20521, thereby making the limiting wheel 20526 on the rotating roller 20522 cooperate with the limiting rod 20527 to prevent rotation. Under the action of the compression spring 20524, the rotating roller 20522 approaches the fixed roller 20521, and the limiting wheel 20526 on the rotating roller 20522 cooperates with the limiting rod 20527 to stop the rotating roller 20522, so that the rotating roller 20522 and the fixed roller 20521 can clamp the grinding belt 2041, so that the grinding belt 2041 cannot rotate on its own, which is convenient for switching the position of the grinding belt 2041 on the support shaft 2042.

[0027] In one embodiment, the upper inner rotating shaft 203 and the lower inner rotating shaft 208 are both provided with a transmission annular groove 210, and the rotating belt 2051 is rotatably arranged in the transmission annular groove 210. The transmission annular groove 210 is provided with two front and rear sides, and the rotating belt 2051 is provided with two sides at the front and rear sides, so as to facilitate the normal rotation of the rotating belt 2051.

[0028] In one embodiment, the housing 1000 is further provided with a cam 900, and the left and right sides of the cam 900 are both provided with adjustment plates 201, and a return spring 2011 is connected between the two adjustment plates 201, and the return spring 2011 has a tendency to make the two adjustment plates 201 approach each other, and the two adjustment plates 201 are both located inside the rotating belt 2051, and the adjustment plate 201 can push the rotating belt 2051, so that the rotating roller 20522 is pushed away from the fixed roller 20521 by the grinding belt 2041, and then the limiting wheel 20526 on the rotating roller 20522 is disengaged from the limiting rod 20527. In this way, the rotating roller 20522 can rotate, so that the grinding belt 2041 can rotate, and thus the reciprocating rotation of the cam 900 can make multiple grinding belts 2041 realize self-rotation while revolving, so that when multiple grinding belts 2041 contact the workpiece 600 in sequence, the speed difference can be reduced.

[0029] In one embodiment, the housing 1000 is further provided with a second driving mechanism, and the second driving mechanism is used to drive the cam 900 to rotate. The first driving mechanism and the second driving mechanism are driving motors.

[0030] In one embodiment, the upper inner rotating shaft 203 and the lower inner rotating shaft 208 are both provided with a stop ring, and the circumference of the stop ring is provided with a plurality of clamping posts 211, and the upper sprocket 202 and the lower sprocket 207 are both provided with a plurality of clamping holes 209, and the clamping posts 211 and the clamping holes 209 extend in the front-to-back direction and correspond to each other one by one, so that the upper inner rotating shaft 203 and the upper sprocket 202 can rotate synchronously, and the lower inner rotating shaft 208 and the lower sprocket 207 can rotate synchronously. In this way, the chain can synchronously drive the rotating belt 2051 to rotate during the rotation process, so that the clamping roller group 2052 and the grinding belt 2041 can keep moving synchronously.

[0031] In one embodiment, the housing 1000 is further provided with a third driving mechanism, which can synchronously drive the upper inner rotating shaft 203 to slide relative to the upper sprocket 202, and the lower inner rotating shaft 208 to slide relative to the lower sprocket 207. The third driving mechanism is a telescopic cylinder. When the clamping column 211 of the upper inner rotating shaft 203 is disengaged from the clamping hole 209 of the upper sprocket 202, the upper inner rotating shaft 203 no longer rotates synchronously with the upper sprocket 202; when the clamping column 211 of the lower inner rotating shaft 208 is disengaged from the clamping hole 209 of the lower sprocket 207, the lower inner rotating shaft 208 no longer rotates synchronously with the lower sprocket 207, so that the rotating belt 2051 no longer rotates synchronously with the chain, so that the clamping roller group 2052 can move relative to the grinding belt 2041, so that the contact position between the grinding belt 2041 and each supporting shaft 2042 changes.

[0032] In one embodiment, if Fig.12As shown, the chain includes a plurality of hinged links 206, each of which is provided with a hinge hole 2063, and the link 206 is also provided with a transmission hole 2061. The upper sprocket 202 and the lower sprocket 207 are both provided with transmission teeth, and the transmission teeth are snap-fitted with the transmission hole 2061. The link 206 is also provided with a fixing hole 2062, and the support shaft 2042 is fixedly disposed in the fixing hole 2062.

[0033] In combination with the above embodiments, the use principle and working process of the embodiments of the present invention are as follows: The upper sprocket 202 is driven to rotate by the first driving mechanism, and the upper sprocket 202 drives the multiple grinding units 204 to revolve through the chain, and the multiple grinding units 204 of the first grinding assembly 200 rotate in opposite directions to the multiple grinding units 204 of the second grinding assembly. Then the workpiece 600 is placed on the first feeding plate, so that the workpiece 600 is clamped between the fixed clamping plate 402 and the movable clamping plate 403. Then the hydraulic cylinder 700 is controlled to drive the second feeding plate to move forward and backward, so as to adjust the front and rear position of the workpiece 600, and then the reciprocating cylinder 300 is controlled to drive the first feeding plate to move back and forth, so that the workpiece 600 is reciprocated in the grinding space between the first grinding assembly 200 and the second grinding assembly.

[0034] In the initial state, if Fig. 9 As shown, the rotating roller 20522 and the fixed roller 20521 clamp the grinding belt 2041, and the grinding belt 2041 cannot rotate. In the early stage of grinding, the cam 900 is controlled to reciprocate through the second driving mechanism, so that when the workpiece 600 enters the grinding space, the cam 900 opens the two adjustment plates 201, as shown in FIG. Fig.10 As shown, the adjusting plate 201 pushes the rotating belt 2051, so that the rotating roller 20522 presses against the grinding belt 2041, and then the limiting wheel 20526 on the rotating roller 20522 is disengaged from the limiting rod 20527, and the rotating roller 20522 can rotate, so that the grinding belt 2041 can rotate, so that the speed difference can be reduced when the grinding belt 2041 contacts the workpiece 600. When the workpiece 600 leaves the grinding space, the cam 900 is reset, and the two adjusting plates 201 are reset under the action of the reset spring 2011, and the rotating roller 20522 is close to the fixed roller 20521 again under the action of the compression spring 20524, and the rotating roller 20522 no longer rotates, and the rotating roller 20522 and the fixed roller 20521 clamp the grinding belt 2041 again, and the grinding belt 2041 no longer rotates. In this way, at the beginning of grinding, when the workpiece 600 enters the grinding space, the grinding belt 2041 can rotate, and when the workpiece 600 leaves the grinding space, the grinding belt 2041 stops rotating, so that the speed difference can be reduced when multiple grinding belts 2041 contact the workpiece 600, avoiding damage to the grinding belts 2041.

[0035] In the middle stage of grinding, the second driving mechanism is controlled to keep the cam 900 at the initial position, and the rotating roller 20522 and the fixed roller 20521 clamp the grinding belt 2041 so that the grinding belt 2041 no longer rotates, and multiple grinding belts 2041 grind the workpiece 600 in turn.

[0036] As the grinding progresses, when it is necessary to switch the grinding surface of each grinding belt 2041, the third driving mechanism is controlled to drive the upper inner rotating shaft 203 and the lower inner rotating shaft 208 to slide back and forth, so that the clamping column 211 of the upper inner rotating shaft 203 is disengaged from the clamping hole 209 of the upper sprocket 202, and the clamping column 211 of the lower inner rotating shaft 208 is disengaged from the clamping hole 209 of the lower sprocket 207, so that the rotating belt 2051 no longer rotates synchronously with the chain, and the clamping roller group 2052 clamps the grinding belt 2041, so that the contact position of the grinding belt 2041 and each support shaft 2042 changes, and then the grinding surface of the grinding belt 2041 changes, thereby avoiding serious wear of local positions of each grinding belt 2041 and extending the service life of the grinding belt 2041.

[0037] In addition, during use, the grinding belts 2041 of the multiple grinding units 204 can be set to grinding surfaces of different coarsenesses, so that the workpiece 600 can be roughly ground first and then switched to fine grinding, thereby avoiding damage to the grinding belt 2041 by locally protruding burrs and extending the service life of the grinding belt 2041.

[0038] In addition, during use, the chain can be controlled to rotate a set number of circles, which is an integer, so that the wear degree of multiple grinding units 204 on the chain remains consistent, further extending the service life of the grinding belt 2041.

[0039] After the grinding is finally completed, the first driving mechanism and the reciprocating cylinder 300 are controlled to stop running, and the workpiece 600 can be removed.

[0040] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A motor housing polishing and grinding device, characterized in that: The present invention comprises a shell, wherein a first grinding assembly and a second grinding assembly are arranged inside the shell, the first grinding assembly and the second grinding assembly are symmetrically arranged and have the same structure, a grinding space is formed between the first grinding assembly and the second grinding assembly, the first grinding assembly comprises an upper sprocket and a lower sprocket arranged at intervals up and down, the axes of the upper sprocket and the lower sprocket both extend in the front-to-back direction, a chain is jointly sleeved on the upper sprocket and the lower sprocket, a first driving mechanism is provided on the shell, the first driving mechanism is used to drive the upper sprocket to rotate, the rotation of the upper sprocket drives the chain and the lower sprocket to rotate synchronously, a plurality of grinding units are evenly distributed on the circumference of the chain, the grinding unit comprises a plurality of support shafts extending in the front-to-back direction, the support shafts are evenly distributed in the up-down direction and fixedly arranged on the chain, the number of the support shafts is greater than or equal to four, rollers are rotatably provided on the support shafts located at the uppermost and lowermost ends of the same grinding unit, a grinding belt is jointly sleeved on the two rollers, and the grinding belt is used to grind the workpiece placed in the grinding space.

2. The motor housing polishing and grinding device according to claim 1, characterized in that: A support block is fixedly provided on the support shaft located in the middle position of the same grinding unit, and the support block is used to support the grinding belt.

3. The motor housing polishing and grinding device according to claim 1, characterized in that: An upper inner rotating shaft is provided inside the upper sprocket for sliding back and forth, and a lower inner rotating shaft is provided inside the lower sprocket for sliding back and forth. An adjusting component is jointly sleeved on the outside of the upper inner rotating shaft and the lower inner rotating shaft, and the adjusting component includes a rotating belt, and a plurality of clamping roller groups are arranged at intervals in the circumference of the rotating belt, and the clamping roller groups correspond to the grinding belts one by one. The clamping roller groups include a fixed rod, and the fixed rod is fixedly provided on the rotating belt, and the fixed rod is perpendicular to the rotating belt. A fixed roller is fixedly provided on the fixed rod, and the fixed roller is located inside the grinding belt. A rotating roller is also slidably provided on the fixed rod, and the rotating roller is located outside the grinding belt. The rotating roller can slide relative to the fixed roller, and can rotate when the rotating roller is away from the fixed roller, and stops rotating when the rotating roller approaches the fixed roller.

4. The motor housing polishing and grinding device according to claim 3, characterized in that: The fixed rod is provided with a slide groove extending along its length direction, and a rotating shaft is rotatably provided inside the rotating roller, and the end of the rotating shaft extends into the slide groove and can slide along the slide groove, and a limiting rod is provided on the fixed rod, and a limiting wheel is fixed on the rotating roller, and a plurality of limiting grooves are provided on the limiting wheel, and the limiting grooves are matched with the limiting rod to stop rotation, and a compression spring is provided in the slide groove, and the compression spring can push the rotating shaft to make the rotating roller move toward the fixed roller, thereby making the limiting wheel on the rotating roller cooperate with the limiting rod to stop rotation.

5. The motor housing polishing and grinding device according to claim 4, characterized in that: The upper inner rotating shaft and the lower inner rotating shaft are both provided with transmission ring grooves, and the rotating belt is rotatably arranged in the transmission ring grooves.

6. The motor housing polishing and grinding device according to claim 5, characterized in that: The shell body is also provided with a cam, and adjustment plates are provided on the left and right sides of the cam. A reset spring is connected between the two adjustment plates, and the reset spring has a tendency to make the two adjustment plates approach each other. The two adjustment plates are both located inside the rotating belt. The adjustment plates can push the rotating belt, so that the rotating roller is away from the fixed roller under the push of the grinding belt, and then the limiting wheel on the rotating roller is disengaged from the limiting rod.

7. The motor housing polishing and grinding device according to claim 6, characterized in that: The housing is also provided with a second driving mechanism, and the second driving mechanism is used for driving the cam to rotate.

8. The motor housing polishing and grinding device according to claim 3, characterized in that: The upper inner rotating shaft and the lower inner rotating shaft are both provided with a stop ring, and a plurality of clamping columns are provided on the circumference of the stop ring. The upper sprocket and the lower sprocket are both provided with a plurality of clamping holes, and the clamping columns and the clamping holes extend in the front-to-back direction and correspond one to one, so that the upper inner rotating shaft and the upper sprocket can rotate synchronously, and the lower inner rotating shaft and the lower sprocket can rotate synchronously.

9. The motor housing polishing and grinding device according to claim 8, characterized in that: The shell is also provided with a third driving mechanism, and the third driving mechanism can synchronously drive the upper inner rotating shaft to slide relative to the upper sprocket, and the lower inner rotating shaft to slide relative to the lower sprocket.

10. The motor housing polishing and grinding device according to claim 1, characterized in that: The chain comprises a plurality of hinged chain links, each of which is provided with a transmission hole. The upper sprocket and the lower sprocket are both provided with transmission teeth, and the transmission teeth are engaged with the transmission holes. The chain links are also provided with a fixing hole, and the support shaft is fixedly arranged in the fixing hole.

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