CN212947230U

CN212947230U - Channel-adjustable feeding device and double-end-face grinding machine thereof

Info

Publication number: CN212947230U
Application number: CN202021423896.1U
Authority: CN
Inventors: 陈达幸
Original assignee: NINGBO YINZHOU DAXING FEIBIAO EQUIPMENT FACTORY
Current assignee: NINGBO YINZHOU DAXING FEIBIAO EQUIPMENT FACTORY
Priority date: 2020-07-19
Filing date: 2020-07-19
Publication date: 2021-04-13
Anticipated expiration: 2030-07-19

Abstract

The utility model discloses a feed arrangement and double-ended grinding machine thereof with adjustable passageway has solved last baffle and lower baffle because length is longer, needs to adjust at both ends, appears the error easily, makes the baffle slope appear, has reduced machining efficiency and quality, has hindered the normal operating of equipment when serious, and its technical scheme is: the workpiece channel is defined by an upper feeding plate and a lower feeding plate, and the widths of the upper feeding plate and the lower feeding plate are smaller than the width of a workpiece; a first guide roller and a second guide roller; the distance adjusting device can adjust the distance between the upper feeding plate and the lower feeding plate to adapt to the thickness of a processed workpiece, reduces cost, realizes that a workpiece channel formed between the upper baffle and the lower baffle can be synchronously adjusted at two ends, adapts to processing workpieces with different thicknesses, avoids inclination and errors, improves adjusting efficiency and accuracy, is fully automatic in whole work, can realize one-person multi-machine management, greatly reduces labor intensity and worker skill, and improves production efficiency.

Description

Channel-adjustable feeding device and double-end-face grinding machine thereof

Technical Field

The utility model relates to a feed arrangement with adjustable passageway and double-ended grinding machine thereof.

Background

The double-end-face grinding machine is an efficient plane processing machine tool, two parallel end faces can be ground simultaneously in one processing process, the grinding machine tool can be divided into a horizontal type and a vertical type according to the structure, the ground product is high in precision and production efficiency, the grinding machine tool is widely applied to industries such as steam friction, bearings and magnetic materials, and products made of various materials such as magnetic rings, magnetic steel sheets and graphite plates are suitable for processing.

The grinding machine has the advantages that the grinding machine can be ground by two ends while conveying, the main scheme is that the conveying channel is provided with the upper baffle and the lower baffle, workpieces are placed in the conveying channel, the conveying channel is provided with the grinding head to grind while conveying, the mode does not distinguish the conveying station from the grinding station, and the efficiency is high.

But the length of the conveying channel is longer because the whole stroke penetrates through the whole length of the loading, grinding and blanking stations. And the upper baffle and the lower baffle need to be adjusted at two ends respectively because the lengths are all longer, and the errors are very easy to appear because the two ends at present are independently adjusted, so that the baffles incline, the processing efficiency and the quality are reduced, and the normal operation of equipment is hindered in serious cases.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a first discovery provides a workpiece channel of adjustable, and the workpiece channel that forms between the baffle can realize about realizing can realize the synchro-control at both ends, and inclination and error are avoided appearing in the processing work piece of the different thickness of adaptation, have improved regulation efficiency and regulation accuracy.

The above technical purpose of the present invention can be achieved by the following technical solutions: a channel-adjustable feeding device comprises a workpiece channel, wherein the workpiece channel is defined by an upper feeding plate and a lower feeding plate, and the widths of the upper feeding plate and the lower feeding plate are smaller than the width of a workpiece; the first guide roller and the second guide roller are respectively arranged at two sides of a workpiece channel, the distance between the first guide roller and the guide roller is adapted to the width of a processed workpiece, and the first guide roller and the second guide roller rotate towards the conveying direction of the workpiece channel under the action of a driving device; and the distance between the upper feeding plate and the lower feeding plate can be adjusted by the distance adjusting device so as to be adaptive to the thickness of the processed workpiece.

Further, the upper feeding plate comprises a first side plate and a second side plate, the first driving device is used for driving the first side plate to lift, and the second driving device is used for driving the second side plate to lift.

Furthermore, first drive arrangement includes a driving motor, a driving motor is connected with first worm, first worm is connected with first worm wheel, second drive arrangement includes a driving motor, second driving motor is connected with the second worm, first worm wheel and second worm wheel are connected with first curb plate and second curb plate through transmission respectively.

Furthermore, first drive arrangement includes first lead screw hand wheel, first lead screw hand wheel is connected with first worm, first worm is connected with first worm wheel, second drive arrangement includes second lead screw hand wheel, second lead screw hand wheel is connected with the second worm, first worm wheel and second worm wheel are connected with first curb plate and second curb plate through transmission respectively.

Furthermore, first drive arrangement still includes the third worm wheel with first worm matched with to and the fourth worm wheel with second worm matched with, third worm wheel and fourth worm wheel pass through transmission and are connected with first curb plate and second curb plate respectively, wherein, first worm wheel and second worm wheel link to each other with the head end of first curb plate and second curb plate respectively, third worm wheel and fourth worm wheel link to each other with the end of first curb plate and second curb plate respectively.

Further, the first driving device comprises a third driving motor, the third driving motor drives a first belt pulley, the first belt pulley is connected with a second belt pulley through a belt, and the first belt pulley and the second belt pulley are both connected with the first side plate through a transmission device; the second driving device comprises a fourth driving motor, the second driving motor drives a third belt pulley, the third belt pulley is connected with a fourth belt pulley through a belt, and the third belt pulley and the fourth belt pulley are both connected with the second side plate through a transmission device; first belt pulley and third belt pulley link to each other with the head end of first curb plate and second curb plate respectively, second belt pulley and fourth belt pulley link to each other with the end of first curb plate and second curb plate respectively.

Further, the first driving device comprises a fifth driving motor, the fifth driving motor is connected with a first transmission rod, a first bevel gear and a second bevel gear, as well as a third bevel gear and a fourth bevel gear which are meshed with the first bevel gear and the second bevel gear are arranged on the first transmission rod, and the third bevel gear and the fourth bevel gear are matched with the first side plate through a transmission device; the first driving device comprises a sixth driving motor, the sixth driving motor comprises a second transmission rod, a fifth bevel gear and a sixth bevel gear are arranged on the second transmission rod, a seventh bevel gear and an eighth bevel gear are matched with the fifth bevel gear and the sixth bevel gear, and the seventh bevel gear and the eighth bevel gear are matched with the second side plate through a transmission device; the third bevel gear and the seventh bevel gear are respectively connected with the head ends of the first side plate and the second side plate, and the fourth bevel gear and the eighth bevel gear are respectively connected with the tail ends of the first side plate and the second side plate.

Furthermore, the lower feeding plate is driven to lift by a fifth driving device, the fifth driving device is of a screw rod structure, and the screw rod structure is provided with a driving handle.

By adopting the technical scheme, the utility model discloses following beneficial effect has:

1. the upper feeding plate and the lower feeding plate are matched with the thickness of the workpiece, and the workpiece is compactly transported in a workpiece channel formed between the upper feeding plate and the lower feeding plate, so that the phenomenon of workpiece overlapping is avoided, namely, the workpiece in a whole row is positioned up and down, and the workpiece in the workpiece channel is conveniently processed;

2. the workpieces are driven to move forwards by the action force given to the workpieces by the rotation of the first guide roller and the second guide roller, and the driven workpieces act on the front workpieces due to the compact arrangement of the workpieces in the channel, so that the whole body moves forwards and the movement is stable and smooth;

3. the workpiece channel is adjustable, so that the adjustable workpiece channel can be suitable for workpieces with different thicknesses, and the debugging and the adjustment are convenient and simple;

4. the driving device can be driven by a belt, a bevel gear or a worm and gear, and the driving mode is various and is adopted according to the actual working condition;

5. go up the whole length of flitch longer, so be provided with synchronous elevating system at first and last both ends, played and gone up and down more steadily on the whole.

A second object of the present invention is to provide a double-ended grinding machine with an adjustable workpiece channel, which adapts the workpiece channel to the thickness of the workpiece, and the workpiece is compactly and stably conveyed in the workpiece channel and is processed at the same time, thereby improving the efficiency and reducing the complexity of the equipment structure and the manufacturing cost.

In order to achieve the purpose of the invention, the following technical scheme is provided: a double-ended grinding machine comprises the channel adjustable feeding device.

Drawings

FIG. 1 is a schematic diagram of the workpiece channel formation of the present invention;

FIG. 2 is a top view of an embodiment of a worm gear feed device;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a perspective view of a worm gear embodiment;

FIG. 5 is a schematic view of a transmission;

FIG. 6 is an overall schematic view of a worm gear embodiment;

FIG. 7 is a schematic diagram of a worm gear lead screw hand wheel embodiment;

FIG. 8 is a perspective view of a pulley embodiment;

FIG. 9 is a perspective view of a bevel gear embodiment;

FIG. 10 is a schematic view of a lower feed plate screw assembly;

figure 11 is an overall schematic view of a double-ended grinding machine.

Reference numerals: 1. a workpiece channel; 11. an upper feeding plate; 111. a first side plate; 112. a second side plate; 12. a lower feed plate; 13. a first guide roller; 14. a second guide roller; 15. a feed baffle; 3. a first driving device; 31. a first drive motor; 32. a first worm; 33. a first worm gear; 34. a third worm gear; 35. a third drive motor; 351. a first pulley; 352. a second pulley; 36. a fifth drive motor; 361. a first drive lever; 362. a first bevel gear; 363. a second bevel gear; 364. a third bevel gear; 365. a fourth bevel gear; 37. a first lead screw hand wheel; 4. a second driving device; 41. a second drive motor; 42. a second worm; 43. a second worm gear; 44. a fourth worm gear; 45. a fourth drive device; 451. a third belt pulley; 452. a fourth belt pulley; 46. a sixth drive motor; 461. a second transmission rod; 462. a fifth bevel gear; 463. a sixth bevel gear; 464. a seventh bevel gear; 465. an eighth bevel gear; 47. a second lead screw hand wheel; 5. a workpiece; 6. a transmission device; 61. a drive screw; 62. a first transmission block; 63. a frame; 7. a fifth driving device; 71. a lead screw device; 72. a handle; 8. a double-ended grinding machine; 81. grinding heads; 82. and (6) grinding the position.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model provides a feed arrangement that passageway can be debugged, be applied to the material loading of waiting to process work piece 5 and the continuous feeding in the processing station, processing equipment can be two end face grinding machine 8 or other machining equipment, adjustable feed arrangement adopts and forms work piece passageway 1, work piece 5 can arrange in work piece passageway 1 in turn compactly promptly, feed arrangement forms ground work piece passageway 1 because the thickness looks adaptation of its thickness and work piece 5, so the phenomenon such as overlapping can not take place at the in-process that work piece 5 continuously transported forward, can be fixed a position from top to bottom in order to see a whole row of work piece 5, thereby can be processed by processing equipment, the limit processing has been realized transporting, machining efficiency has been promoted greatly, equipment manufacturing cost and manufacturing complexity have been reduced.

Referring to fig. 1 and 3, the workpiece channel 1 is formed by an upper feeding plate 11 and a lower feeding plate 12, the upper end surface and the lower end surface of the workpiece channel 1 formed by the upper feeding plate 11 and the lower feeding plate 12 are horizontal surfaces, and the distance between the upper feeding plate 11 and the lower feeding plate 12 is matched with the thickness of the workpiece 5 to be processed, where the matching is defined in that the distance between the upper feeding plate 11 and the lower feeding plate 12 is substantially equal to the thickness of the workpiece 5 to be processed but not less than the thickness of the processed workpiece 5, i.e., the distance between the upper feeding plate 11 and the lower feeding plate 12 is slightly greater than the thickness of the processed workpiece 5, so as to facilitate the processed workpiece 5 to be transported in the workpiece channel 1. For example, the thickness of the workpiece 5 to be machined is 20mm, and the thickness of the workpiece path 1 may be set to be between 22mm and 25mm, so that the machined workpieces 5 do not overlap each other while being transported.

The widths of the upper feeding plate 11 and the lower feeding plate 12 are smaller than the width of the workpiece 5, so that two side portions of the workpiece 5 are exposed outside, and the workpiece can be conveniently processed by processing equipment such as the double-end-face grinding machine 8 without structural interference.

Referring to fig. 2 and 4, the workpiece conveying device further comprises a first guide roller 13 and a second guide roller 14, which are respectively arranged on two sides of the workpiece channel 1, the two sides are further provided with feeding baffles 15, the first guide roller 13 and the second guide roller 14 are conveyed to the inner side through a relief through hole on the feeding baffles 15, the distance between the first guide roller 13 and the guide rollers is adapted to the width of the processed workpiece 5, the first guide roller 13 and the second guide roller 14 rotate towards the conveying direction of the workpiece channel 1 under the action of a driving device to provide power for conveying the workpiece 5, the first guide roller 13 and the second guide roller 14 are both arranged in a cylindrical shape, the distance between the first guide roller 13 and the second guide roller 14 is the same as the width of the workpiece 5, or can be arranged to be slightly larger than the width of the workpiece 5 due to specific working conditions, the driving device drives the first guide roller 13 and the second guide roller 14 to make self-rotation motion with respective centers, the first guide roller 13 and the second guide roller 14 rotate towards the conveying direction of the feeding device under the action of the driving device, namely, the rotation directions of the first guide roller 13 and the second guide roller 14 are opposite, the circumferential surfaces of the first guide roller 13 and the second guide roller 14 can be used for contacting with the workpieces 5 passing on the conveying belt, the driving force for forward conveying of the workpieces 5 is provided, the conveying towards the conveying direction of the feeding device is enabled, namely, once the positions of the workpieces 5 on the conveying belt are deviated, the position of the guide roller on one side is adjusted, the guide roller on the other side can further correct the deviation, the workpieces 5 conveyed on the conveying belt are simultaneously centered while being fed, the workpieces 5 are driven to move forwards, and the driven workpieces 5 act on the front workpieces 5 to enable the whole to move forwards due to the fact that the workpieces 5 are compactly arranged in the passage, the motion is stable and smooth, the workpiece 5 on the conveyor belt is ensured to be positioned at the central position, the workpiece can be directly processed when entering a processing area, and the product quality is improved.

Referring to fig. 2 and 4, as another embodiment of the present embodiment, the upper feeding plate 11 includes a first side plate 111 and a second side plate 112, the first side plate 111 and the second side plate 112 are arranged in parallel in height, the first driving device 3 is configured to drive the first side plate 111 to ascend and descend, and the second driving device 4 is configured to drive the second side plate 112 to ascend and descend.

Referring to fig. 6, the first driving device 3 further includes a third worm wheel 34 engaged with the first worm 32, and a fourth worm wheel 44 engaged with the second worm 42, the third worm wheel 34 and the fourth worm wheel 44 are respectively connected to the first side plate 111 and the second side plate 112 through the transmission device 6, wherein the first worm wheel 33 and the second worm wheel 43 are respectively connected to head ends of the first side plate 111 and the second side plate 112, and the third worm wheel 34 and the fourth worm wheel 44 are respectively connected to tail ends of the first side plate 111 and the second side plate 112. Go up the whole length of flitch longer, so be provided with synchronous elevating system at first and last both ends, played and gone up and down more steadily on the whole.

The first driving device 3 comprises a first driving motor 31, the first driving motor 31 is connected with a first worm 32, the first worm 32 is horizontally arranged, the first worm 32 is connected with a first worm wheel 33, the second driving device 4 comprises a second driving motor 41, the second driving motor 41 is connected with a second worm 42, and the first worm wheel 33 and the second worm wheel 43 are respectively connected with the first side plate 111 and the second side plate 112 through a transmission device 6.

Referring to fig. 7, as another embodiment, the first driving device 3 includes a first lead screw hand wheel 37, the first lead screw hand wheel 37 is connected with a first worm 32, the first worm 32 is horizontally arranged, the first worm 32 is connected with a first worm wheel 33, the second driving device 4 includes a second lead screw hand wheel 47, the second lead screw hand wheel 47 is connected with a second worm 42, and the first worm wheel 33 and the second worm wheel 43 are respectively connected with the first side plate 111 and the second side plate 112 through a transmission device 6. Manual adjustment can be achieved by setting the motor to be a lead screw hand wheel.

Referring to fig. 5, the specific transmission device 6 is a transmission screw 61, the first worm wheel 33 is connected to the transmission screw 61, the second worm wheel 43 is connected to the transmission screw 61, the first worm wheel 33 and the second worm wheel 43 can be fixed on the frame 63 to maintain the position, and the transmission device further includes a first transmission block 62 and a second transmission block, the first transmission block 62 and the second transmission block have through holes for the transmission screw 61 to penetrate through, the first transmission block 62 is fixedly connected to the first side plate 111, and the second transmission block is fixedly connected to the second side plate 112.

Therefore, the first side plate 111 and the second side plate 112 can be controlled respectively only by driving the first driving motor 31 and the second driving motor 41 respectively, and the worm and gear device and the lead screw are adopted for adjustment, so that the control precision is higher.

Referring to fig. 8, as another embodiment, the first driving device 3 includes a third driving motor 35, the third driving motor 35 drives a first pulley 351, the first pulley 351 is connected to a second pulley 352 through a belt, and the first pulley 351 and the second pulley 352 are both connected to the first side plate 111 through a transmission device 6; the second driving device 4 comprises a fourth driving motor, the second driving motor 41 drives a third belt pulley 451, the third belt pulley 451 is connected with a fourth belt pulley 452 through a belt, and the third belt pulley 451 and the fourth belt pulley 452 are both connected with the second side plate 112 through a transmission device 6; the first pulley 351 and the third pulley 451 are connected to the head ends of the first side plate 111 and the second side plate 112, respectively, and the second pulley 352 and the fourth pulley 452 are connected to the tail ends of the first side plate 111 and the second side plate 112, respectively. The transmission 6 in this embodiment is the same as the transmission 6 in the worm gear embodiment and will not be described again.

Referring to fig. 9, as another embodiment, the first driving device 3 includes a fifth driving motor 36, the fifth driving motor 36 is connected with a first transmission rod 361, a first bevel gear 362 and a second bevel gear 363 are arranged on the first transmission rod 361, and a third bevel gear 364 and a fourth bevel gear 365 engaged with the first bevel gear 362 and the second bevel gear 363, the third bevel gear 364 and the fourth bevel gear 365 are engaged with the first side plate 111 through a transmission device 6; the first driving device 3 comprises a sixth driving motor 46, the sixth driving motor 46 comprises a second transmission rod 461, the second transmission rod is provided with a fifth bevel gear 462 and a sixth bevel gear 463, and a seventh bevel gear 464 and an eighth bevel gear 465 which are matched with the fifth bevel gear 462 and the sixth bevel gear 463, and the seventh bevel gear 464 and the eighth bevel gear 465 are matched with the second side plate 112 through a transmission device 6; a third bevel gear 364 and a seventh bevel gear 464 are connected to head ends of the first side plate 111 and the second side plate 112, respectively, and a fourth bevel gear 365 and an eighth bevel gear 465 are connected to tail ends of the first side plate 111 and the second side plate 112, respectively. The transmission 6 in this embodiment is the same as the transmission 6 in the worm gear embodiment and will not be described again.

Referring to fig. 10, the above embodiments are all height adjustment manners of the upper feeding plate 11, that is, the adjustment of the vertical distance of the workpiece channel 1 can be satisfied, further, when the lower feeding plate 12 needs to be adjusted, the lower feeding plate 12 is also divided into two parts as an example, the height of the lower feeding plate 12 is also adjusted by the fifth driving device 7, the fifth driving device 7 is a screw rod structure and has a driving handle 72, and the structure of the fifth driving device is similar to that of the above structure, and therefore, the details are omitted, so that the overall height of the workpiece channel 1 can be adjusted.

Referring to fig. 11, the present embodiment further provides a double-end surface grinding machine 8, wherein the double-end surface grinding machine 8 has the above-mentioned channel-adjustable feeding device, and the feeding device formed by the upper feeding plate 11 and the lower feeding plate 12 is disposed through the double-end surface grinding machine 8 and extends to the rear side direction of the grinding position 82 with two grinding heads 81, so that due to the upper and lower positioning of the upper feeding plate 11 and the lower feeding plate 12, it is equivalent to vertically clamp a whole row of workpieces 5, and thus, the workpieces 5 in the workpiece channel 1 can be conveniently machined.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A channel adjustable feeding device, which is characterized in that,

the feeding device comprises a workpiece channel (1), wherein the feeding device is defined by an upper feeding plate (11) and a lower feeding plate (12), and the widths of the upper feeding plate (11) and the lower feeding plate (12) are smaller than the width of a workpiece (5);

the first guide roller (13) and the second guide roller (14) are respectively arranged on two sides of the workpiece channel (1), the distance between the first guide roller (13) and the guide rollers is matched with the width of a workpiece (5) to be processed, and the first guide roller (13) and the second guide roller (14) rotate towards the conveying direction of the workpiece channel (1) under the action of a driving device to provide power for conveying the workpiece (5);

a distance adjusting device capable of adjusting the distance between the upper feed plate (11) and the lower feed plate (12) to adapt to the thickness of the workpiece (5) being processed.

2. The channel-adjustable feeding device as claimed in claim 1, wherein the upper feeding plate (11) comprises a first side plate (111) and a second side plate (112), the first driving device (3) is used for driving the first side plate (111) to ascend and descend, and the second driving device (4) is used for driving the second side plate (112) to ascend and descend.

3. The channel-adjustable feeding device as claimed in claim 2, wherein the first driving device (3) comprises a first driving motor (31), the first driving motor (31) is connected with a first worm (32), the first worm (32) is connected with a first worm wheel (33), the second driving device (4) comprises a second driving motor (41), the second driving motor (41) is connected with a second worm (42), and the first worm wheel (33) and the second worm wheel (43) are respectively connected with the first side plate (111) and the second side plate (112) through a transmission device (6).

4. The channel-adjustable feeding device according to claim 2, wherein the first driving device (3) comprises a first lead screw hand wheel (37) connected with a first worm (32), the first worm (32) is connected with a first worm wheel (33), the second driving device (4) comprises a second lead screw hand wheel (47) connected with a second worm (42), and the first worm wheel (33) and the second worm wheel (43) are respectively connected with the first side plate (111) and the second side plate (112) through a transmission device (6).

5. The channel-adjustable feeding device as claimed in claim 3 or 4, wherein the first driving device (3) further comprises a third worm wheel (34) engaged with the first worm (32) and a fourth worm wheel (44) engaged with the second worm (42), the third worm wheel (34) and the fourth worm wheel (44) are respectively connected with the first side plate (111) and the second side plate (112) through a transmission device (6), wherein the first worm wheel (33) and the second worm wheel (43) are respectively connected with the head ends of the first side plate (111) and the second side plate (112), and the third worm wheel (34) and the fourth worm wheel (44) are respectively connected with the tail ends of the first side plate (111) and the second side plate (112).

6. A channel-adjustable feeding device according to claim 3, wherein the first driving device (3) comprises a third driving motor (35), the third driving motor (35) drives a first belt pulley (351), the first belt pulley (351) is connected with a second belt pulley (352) through a belt, and the first belt pulley (351) and the second belt pulley (352) are both connected with the first side plate (111) through a transmission device (6);

the second driving device (4) comprises a fourth driving motor, the second driving motor (41) drives a third belt pulley (451), the third belt pulley (451) is connected with a fourth belt pulley (452) through a belt, and the third belt pulley (451) and the fourth belt pulley (452) are both connected with the second side plate (112) through a transmission device (6);

the first belt pulley (351) and the third belt pulley (451) are respectively connected with the head ends of the first side plate (111) and the second side plate (112), and the second belt pulley (352) and the fourth belt pulley (452) are respectively connected with the tail ends of the first side plate (111) and the second side plate (112).

7. The channel adjustable feeding device of claim 2, wherein the first driving device (3) comprises a fifth driving motor (36), the fifth driving motor (36) is connected with a first transmission rod (361), a first bevel gear (362) and a second bevel gear (363) are arranged on the first transmission rod (361), and a third bevel gear (364) and a fourth bevel gear (365) which are engaged with the first bevel gear (362) and the second bevel gear (363), and the third bevel gear (364) and the fourth bevel gear (365) are matched with the first side plate (111) through a transmission device (6);

the first driving device (3) comprises a sixth driving motor (46), the sixth driving motor (46) comprises a second transmission rod (461), a fifth bevel gear (462) and a sixth bevel gear (463) are arranged on the second transmission rod, and a seventh bevel gear (464) and an eighth bevel gear (465) are matched with the fifth bevel gear (462) and the sixth bevel gear (463), and the seventh bevel gear (464) and the eighth bevel gear (465) are matched with the second side plate (112) through a transmission device (6);

the third bevel gear (364) and the seventh bevel gear (464) are respectively connected with the head ends of the first side plate (111) and the second side plate (112), and the fourth bevel gear (365) and the eighth bevel gear (465) are respectively connected with the tail ends of the first side plate (111) and the second side plate (112).

8. The channel-adjustable feeding device as claimed in claim 1, wherein the lower feeding plate (12) is driven to lift by a fifth driving device (7), and the fifth driving device (7) is a screw structure having a driving handle (72).

9. A parallel surface grinding machine comprising a channel adjustable feed device as claimed in any one of claims 1 to 8.