Gear grinding machine

Abstract

The utility model provides a gear grinding machine which comprises a machine box, a gear grinding device and a pushing rod, a lead screw A for controlling the gear grinding device to ascend and descend is connected with a driving plate, the pushing rod for pushing a band saw to move towards the gear grinding device is connected with a driving connecting rod, and movement between the driving plate and the driving connecting rod is associated through a cam and a bearing B on the cam. The grinding wheel on the tooth grinder grinds teeth after the band saw is pushed in place, and the grinding wheel is separated from the band saw when the band saw does not reach the position, so that wrong tooth grinding operation is avoided. The angles and the lengths of the three supporting rods arranged on the case can be flexibly adjusted to adapt to annular band saws of different specifications, so that the annular band saws arranged on the band saw guiding and limiting clamping plates and the supporting rods can be circularly distributed, and the propelling resistance is small.

Description

Technical Field

[0001] This utility model belongs to the technical field of saw blade grinding equipment, and in particular relates to a grinding machine for ring band saw blades. Background Technology

[0002] In machining, woodworking, and other fields, ring band saws are commonly used to cut metal bars or wood. After prolonged use, the cutting edge of the ring band saw blade becomes dull, resulting in suboptimal cutting performance. At this point, the band saw blade needs to be removed and its teeth sharpened. Traditional manual sharpening methods are inefficient and labor-intensive. The advent of a sharpening machine has significantly improved sharpening efficiency and reduced labor intensity. Chinese Patent CN204603463U describes a ring band saw blade sharpening machine, which includes a base plate supported by a column, a vertical plate fixed to the base plate, and two horizontally aligned bushings fixed to the vertical plate. It also includes an upper roller and a lower roller, with the upper roller's spindle located in the upper bushing and the lower roller's spindle located in the lower bushing. Both the upper and lower rollers are fitted with a first and a second sliding sleeve, and each has an annular wing plate at its opposite edge for laterally clamping the band saw blade. The vertical plate also includes… The machine is equipped with a reducer that drives the upper or lower shaft roller. A bracket is fixedly mounted on the base plate, and a mounting plate is hinged to the top of the bracket. A motor is fixedly mounted on the mounting plate, and a grinding wheel is mounted on the motor shaft. A slotted hole is formed at the bottom of the mounting plate, and a horizontal cylinder is fixedly mounted on the bracket. The piston rod of the cylinder has a pin at its end, located within the slotted hole. The reciprocating extension and retraction of the cylinder's piston rod causes the mounting plate to tilt back and forth at a small angle around the hinge point with the bracket. This saw blade grinding machine achieves gear grinding by rotating the annular band saw blade via the shaft roller, which in turn drives the motor and grinding wheel via the cylinder. However, if the cylinder and shaft roller movements are not synchronized, it can cause "mis-grinding" of the grinding wheel, resulting in a high scrap rate and failing to meet the needs of enterprise production.

[0003] Chinese Patent CN209477430U discloses a ring band saw blade grinding machine, comprising a housing, a gear reducer, a drive motor, a grinding machine, a transmission mechanism, a guide mechanism, and a push rod. The grinding machine is mounted at the front end of the housing. A transverse sliding plate is slidably mounted on the inner side of the housing on one side of the grinding machine via a slide rail and bearings. A support plate is welded to the upper end of the transverse sliding plate. The upper end of the support plate extends to the top of the housing and is movably mounted on a push rod via bearings. A guide mechanism is provided on the outer surface of the housing between the push rod and the grinding machine. Support forks are mounted on the housing on both sides of the guide mechanism via adjusting screws. The drive motor and the gear reducer are fixedly mounted at intervals at the rear end of the housing. The drive motor is connected to the grinding machine via a double-groove pulley and a transmission belt A, and to the input end of the gear reducer via a double-groove pulley and a transmission belt B. The gear reducer is movably connected to the transverse sliding plate and the grinding machine respectively via the transmission mechanism. This gear grinding machine provides power to the transverse slide and the gear grinder through a transmission mechanism, achieving the goal of pushing the workpiece (ring saw blade) forward while the gear grinder drives the grinding wheel upward, and pushing the pusher backward while the gear grinder drives the grinding wheel downward for gear grinding. Since the transmission mechanism and gear grinder are purely mechanical structures, the problem of high scrap rate caused by mis-grinding is solved. However, the gear grinding machine has a complex structure and cannot be flexibly adjusted to fix the position according to different band saws. Utility Model Content

[0004] To address the problems of high scrap rate, complex structure, and cumbersome band saw fixing and adjustment in existing gear grinding machines, this application provides a gear grinding machine with a simple and compact structure and easy fixing and adjustment of the ring band saw.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] A gear grinding machine includes a housing, a gear grinder, and a push rod. The housing has a band saw guide and limit clamp on the front and a fixed bracket on the rear. The gear grinder includes a motor A, a housing, and a grinding wheel. The grinding wheel is installed inside the housing, and motor A is fixed to the outside of the housing and drives the grinding wheel to rotate. The housing is hinged to the fixed bracket. The front end of the push rod is located above the band saw guide and limit clamp, and the rear end is connected to a drive linkage. The middle of the drive linkage is limited relative to the housing by a pin B. The housing is connected to a drive plate via a lead screw A. The front end of the drive plate is limited relative to the housing by a pin A. The drive plate has a bearing A. The housing contains a motor B, which is connected to a cam via a reducer. The cam has a bearing B. The outer ring of bearing A mates with the outer edge of the cam, and the outer ring of bearing B mates with the lower part of the drive linkage. When bearing B drives the drive linkage to push the push rod towards the grinding wheel, the outer edge of the cam pushes bearing A upwards, causing the drive plate to move the housing upwards. When the drive linkage drives the push rod away from the grinding wheel, the drive plate moves the housing downwards.

[0007] More preferably, a torsion spring is fitted on the pin B, and the torsion arm of the torsion spring limits the non-bearing side of the drive connecting rod.

[0008] More preferably, the push rod includes a push head and a connecting part. The push head is fixed at the front end of the connecting part, and a connecting fixing plate is provided at the lower end of the connecting part. The lead screw B fixes the connecting fixing plate to the connecting fixing block, and an adjusting nut is provided at the end of the lead screw B. The fixing screw fixes the upper part of the drive connecting rod to the connecting fixing block.

[0009] More preferably, a bearing C is provided between the drive link and the connecting block, and the fixing screw passes through the inner ring of the bearing C.

[0010] More preferably, the chassis is provided with a partition plate, and the pin B in the middle of the drive linkage is connected to the partition plate; the motor B and the reducer are fixed on the back side of the partition plate, and the drive shaft passes through the partition plate and is connected to the cam.

[0011] More preferably, the guide limiting clamp is composed of a first clamp and a second clamp, forming a band saw guide gap between the first clamp and the second clamp. The first clamp is connected to the front side plate of the chassis by a first screw, and the second clamp is connected to the middle partition by a second screw. The limiting sleeve sleeved on the second screw is located between the second clamp and the middle plate. The clamp adjusting bolt passes through the front side plate of the chassis, the first clamp, and the second clamp. An adjusting nut is provided on the clamp adjusting bolt on the outer side of the front side plate and the second clamp. A spring is provided on the clamp adjusting bolt. One end of the spring abuts against the adjusting nut on the front side plate of the chassis, and the other end abuts against the second clamp.

[0012] More preferably, the front end of the drive board is connected to the middle partition and the second clamping plate by a pin A.

[0013] More preferably, support rods are hinged to the rear side and left and right sides of the chassis, and the support rods include fixed section rods and adjustable section rods. One end of the fixed section rod is hinged to the chassis, and the adjustable section rod is inserted into the other end of the fixed section rod and fixed with the support rod adjusting bolt. Two rollers are provided at the end of the adjustable section rod, and the band saw is placed between the rollers.

[0014] Even better, guide wheels are provided on the machine housing on both sides of the band saw guide limit plate.

[0015] More preferably, lead screw A is connected to the top of the housing via an upper connecting plate and to the drive plate via a lower connecting plate. Lead screw A passes through a lead screw hole on the upper connecting plate. An upper limit adjusting nut and a lower limit adjusting nut are respectively provided on lead screw A above and below the upper connecting plate. A lead screw connecting sleeve and an adjusting fixing groove are provided on the lower connecting plate. Lead screw A is inserted into the lead screw connecting sleeve and fixed to the lower connecting plate. The fixing bolt passes through the adjusting fixing groove and the fixing hole on the drive plate to fix the lower connecting plate to the drive plate.

[0016] The beneficial effects of this utility model are as follows: the lead screw A controlling the lifting and lowering of the gear grinder is connected to the drive plate; the push rod propelling the band saw towards the gear grinder is connected to the drive linkage; and the movement between the drive plate and the drive linkage is related through the cam and the bearing B on the cam, ensuring that the grinding wheel on the gear grinder grinds the teeth after the band saw has been pushed into position, and that the grinding wheel separates from the band saw before it reaches the position, thus avoiding accidental gear grinding. The angle and length of the three support rods on the machine housing can be flexibly adjusted to accommodate different specifications of annular band saws, resulting in a circular distribution of the annular band saws placed on the band saw guide limit clamp and support rods, thus minimizing pushing resistance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a gear grinding machine.

[0019] Figure 2 This is a schematic diagram of a gear grinding machine with the support frame omitted.

[0020] Figure 3 This is a schematic diagram of a gear grinding machine with part of the chassis omitted.

[0021] Figure 4 and Figure 5 This is a schematic diagram of the connection structure between the drive linkage and the drive plate.

[0022] Figure 6 and Figure 7 This is a schematic diagram of the guide limit clamp.

[0023] Figure 8 This is a schematic diagram of a cam structure.

[0024] Figure 9 This is a schematic diagram of the adjusting lever.

[0025] In the diagram, 1 is the chassis, 101 is the front panel, 102 is the rear panel, 103 is the bottom plate, 104 is the top plate, 105 is the right side panel, 106 is the middle partition, 2 is the gear grinder, 201 is the motor A, 202 is the housing, 203 is the grinding wheel, 3 is the push rod, 301 is the push head, 302 is the connecting part, 303 is the connecting fixing plate, 4 is the band saw guide limit clamp, 401 is the first clamp, 402 is the second clamp, 403 is the band saw guide clearance, 404 is the clearance hole, 405 is the clearance groove, 5 is the guide wheel, 6 is the support rod, 601 is the fixed section rod, 602 is the adjusting section rod, 603 is the support rod adjusting bolt, 604 is the roller, 605 is the connecting groove, 7 is the lead screw A, 8 is the drive plate, and 9 is the fixing bolt. 10 Upper limit adjusting nut, 11 Lower limit adjusting nut, 12 Upper connecting plate, 13 Lower connecting plate, 131 Screw connecting sleeve, 132 Adjusting fixing groove, 14 Drive connecting rod, 15 Cam, 151 Bearing mounting hole, 152 Shaft mounting hole, 153 Clamping part mounting groove, 16 Motor B, 17 Reducer, 18 Torsion spring, 19 Housing pin, 20 Fixed bracket, 21 Bearing A, 22 Bearing B, 23 Bearing C, 24 Pin A, 25 Pin B, 26 Connecting fixing block, 27 Fixing screw, 28 Screw B, 29 Second screw, 30 Limit sleeve, 31 First screw, 32 Spring, 33 Clamping plate adjusting bolt, 34 Tightening nut, 35 Tightening screw, 36 Push rod adjusting nut. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] This utility model gear grinding machine, see [link / reference] Figures 1-5The system includes a chassis 1, a gear grinder 2, and a push rod 3. The chassis 1 has a band saw guide and limit clamping plate 4 inside its front side and a fixed bracket 20 on its rear side. The gear grinder 2 includes a motor A201, a housing 202, and a grinding wheel 203. The grinding wheel 203 is installed inside the housing 202. The motor A201 is fixed to the outside of the housing 202 and drives the grinding wheel 203 to rotate. The housing 202 and the fixed bracket 20 are hinged together by a housing pin 19. The front end of the push rod 3 is located above the band saw guide and limit clamping plate 4, and its rear end is connected to a drive linkage 14. The middle part of the drive linkage 14 is limited relative to the chassis 1 by a pin B25. The housing 202 is connected to a drive plate 8 via a lead screw A7. The front end of drive plate 8 is limited relative to the housing 1 by pin A24. Bearing A21 is provided on drive plate 8. Motor B16 is provided inside housing 1. Motor B16 is connected to cam 15 via reducer 17. Bearing B22 is provided on cam 15. The outer ring of bearing A21 is engaged with the outer edge of cam 15. The outer ring of bearing B22 is engaged with the lower part of drive linkage 14. When bearing B22 drives drive linkage 14 to push push rod 3 towards grinding wheel 203, the outer edge of cam 15 pushes bearing A21 upward, and drive plate 8 drives housing 202 to move upward. When drive linkage 14 drives push rod 3 away from grinding wheel 203, drive plate 8 drives housing 202 to move downward. A torsion spring 18 is sleeved on pin B25. The torsion arm of torsion spring 18 limits the non-bearing side of drive linkage 14. The band saw guide limit clamp 4 restricts the position of the band saw. When the motor drives the cam 15 to rotate, the bearing B22 on the cam 15 pushes the lower end of the drive linkage 14 backward (with the band saw moving towards the grinding wheel 203 as the forward direction), the upper end of the drive linkage 14 moves forward, and the push rod 3 moves forward to push the teeth to be ground towards the grinding machine 2. During the forward movement of the push rod 3, the outer edge of the cam 15 acts on the bearing A21 to push upward, the drive plate 8 moves upward, and thus drives the housing 202 of the grinding machine 2 to move upward, keeping the grinding wheel 203 separated from the band saw; when the teeth to be ground... After the grinding wheel reaches the grinding position, cam 15 rotates, bearing B22 releases its force on drive linkage 14, and torsion spring 18 causes the lower end of drive linkage 14 to return to its forward position, while the upper end moves backward and push rod 3 retracts. At this time, bearing A21, which cooperates with the outer edge of cam 15, gradually engages with the lower position of cam 15, and the position moves downward. Drive plate 8 drives housing 202 downward, and grinding wheel 203 contacts the tooth to be ground to perform the grinding operation. After the grinding is completed, push rod 3 continues to push the tooth to be ground to perform the next tooth grinding operation, and so on to complete the grinding work of the entire band saw. In this utility model, because the movement between drive plate and drive linkage is related to cam and bearing B on cam, it ensures that the grinding wheel on the grinding machine grinds the teeth after the band saw is pushed into position, and the grinding wheel separates from the band saw before the band saw reaches the position, avoiding the occurrence of mis-grinding operation. It is reliable in operation, simple in structure and easy to process and manufacture.

[0028] See Figure 4 and Figure 5The push rod 3 includes a push head 301 and a connecting part 302. The push head 301 is fixed to the front end of the connecting part 302 and directly contacts the serrated teeth. The lower end of the connecting part 302 is provided with a connecting fixing plate 303. A lead screw B28 fixes the connecting fixing plate 303 to the connecting fixing block 26. The front end of the lead screw B28 is limited by a nut, and the end is provided with a push rod adjusting nut 36. The front and rear positions of the push rod 3 can be adjusted by the push rod adjusting nut 36. A fixing screw 27 fixes the upper part of the drive connecting rod 14 to the connecting fixing block 26. A bearing C23 is provided between the drive connecting rod 14 and the connecting fixing block 26, and the fixing screw 27 passes through the inner ring of the bearing C23. The connecting fixing block and the drive connecting rod 14 are hinged by the fixing screw 27, and the push rod 3 can rotate relative to the drive connecting rod 14. During the pushing process of the teeth to be ground, the movement between the teeth is more flexible and less prone to jamming.

[0029] The chassis 1 primarily serves to support and protect the internal structure. In this embodiment, the chassis 1 includes a front side plate 101, a rear side plate 102, a bottom plate 103, a top plate 104, a left side plate, and a right side plate 105. A central partition 106 is provided inside the chassis 1. The central partition 106 is parallel to the front side plate 101 and the rear side plate 102. The pin B25 in the middle of the drive linkage 14 is connected to the central partition 106. The motor B16 and the reducer 17 are fixed to the back side of the central partition 106, and the drive shaft passes through the central partition 106 and connects to the cam 15. The central partition 106 facilitates the positioning and installation of the drive linkage 14, the cam 15, etc.

[0030] See Figure 3 , Figure 6 and Figure 7In this embodiment, the guide limiting clamp is composed of a first clamp 401 and a second clamp 402. A band saw guide gap 403 is formed between the first clamp 401 and the second clamp 402. The first clamp 401 is connected to the front side plate 101 of the machine housing 1 by a first screw 31. An avoidance hole 404 is provided at a corresponding position on the second clamp 402. The fixing nut of the first screw 31 is installed in the avoidance hole 404. The second clamping plate 402 is connected to the middle partition plate 106 by the second screw 29. A clearance groove 405 is provided at a corresponding position on the first clamping plate 401. The fixing nut for fixing the second screw 29 is located in the clearance groove 405. A limiting sleeve 30, fitted onto the second screw 29, is located between the second clamping plate 402 and the middle plate. The clamping plate adjusting bolt 33 passes through the front side plate 101 of the machine housing 1, the first clamping plate 401, and the second clamping plate 402. An adjusting nut is provided on the clamping plate adjusting bolt 33 on the outer side of the front side plate 101 and the second clamping plate 402 of the machine housing 1. A spring 32 is provided on the clamping plate adjusting bolt 33. One end of the spring 32 abuts against the adjusting nut on the front side plate 101 of the machine housing 1, and the other end abuts against the second clamping plate 402. The gap between the first clamping plate 401 and the second clamping plate 402 can be adjusted by the distance between the first clamping plate 401 and the front side plate 101 and the distance between the second clamping plate 402 and the middle partition plate 106 to meet the requirements of band saws of different thicknesses. The clamping plate adjusting bolt 33 with spring 32 can reliably limit the band saw by the first clamping plate 401 and the second clamping plate 402 during the band saw advance.

[0031] In this embodiment, the front end of the drive plate 8 is connected to the middle partition and the second clamping plate 402 by a pin A24. The drive plate 8 rotates relative to the pin A24.

[0032] The lead screw A7 is connected to the top of the housing 202 via the upper connecting plate 12 and to the drive plate 8 via the lower connecting plate 13. The lead screw A7 passes through the lead screw hole on the upper connecting plate 12. An upper limit adjusting nut 10 and a lower limit adjusting nut 11 are respectively provided on the lead screw A7 above and below the upper connecting plate 12. The lower connecting plate 13 is provided with a lead screw connecting sleeve 131 and an adjusting fixing groove 132. The lead screw connecting sleeve 131 is welded to the lower connecting plate 13. The lead screw A7 is screwed into the lead screw connecting sleeve 131 and fixed to the lower connecting plate 13. The fixing bolt 9 passes through the adjusting fixing groove 132 and the fixing hole on the drive plate 8 to fix the lower connecting plate 13 to the drive plate 8. The adjusting fixing groove 132 is elongated, and the fixing bolt 9 is located in different positions, allowing adjustment of the position of the lead screw A7 relative to the lower connecting plate 13. This adjusts the stroke of the lead screw A7 as it moves with the drive plate 8, achieving precise adjustment of the gear grinding machine 2's lifting and lowering to meet the gear grinding requirements.

[0033] In this embodiment, the structure of cam 15 is as follows: Figure 8As shown, the cam 15 is provided with a bearing mounting hole 151, a shaft mounting hole 152, and a clamping component mounting groove 153. A bolt passes through the inner ring of the bearing B22 and the bearing mounting hole 151 to fix the bearing B22 onto the cam 15. The output shaft of the reducer 17 is inserted into the shaft mounting hole 152. A clamping nut 34 and a clamping screw 35 are installed in the clamping component mounting groove 153. The clamping screw 35 acts radially to clamp the output shaft of the reducer 17, ensuring a reliable connection between the cam 15 and the output shaft of the reducer 17.

[0034] See Figure 1 and Figure 9 Support rods 6 are hinged to the rear and left and right sides of the chassis 1, resulting in three sets of support rods 6. These rods are respectively hinged to the rear panel 102, left panel, and right panel 105 of the chassis 1. The angle of the support rods 6 relative to the chassis 1 is adjustable. Each support rod 6 includes a fixed section rod 601 and an adjusting section rod 602. One end of the fixed section rod 601 is hinged to the chassis 1, and the adjusting section rod 602 is inserted into the other end of the fixed section rod 601 and fixed with a support rod adjusting bolt 603. Two rollers 604 are located at the end of the adjusting section rod 602, and the band saw is positioned between the rollers 604. As a preferred configuration, the adjusting section rod 602 has a connecting groove 605 above it and a through groove below it. The support rod adjusting bolt 603 can flexibly select the position of the connecting groove 605 for fixing based on the insertion position of the adjusting section rod 602 into the fixed section rod 601, adjusting the extension length of the adjusting section rod 602 to accommodate different specifications of ring band saws. Guide wheels 5 are provided on the machine housing 1 on both sides of the band saw guide limit plate. The guide wheels 5 guide the band saw entering and exiting the band saw guide limit plate to ensure smooth band saw conveying.

[0035] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A gear grinding machine, comprising a housing, a gear grinder, and a push rod, characterized in that: The front of the machine housing has a band saw guide and limit clamp, and the rear has a fixed bracket. The gear grinder includes a motor A, a housing, and a grinding wheel. The grinding wheel is installed inside the housing, and the motor A is fixed to the outside of the housing and drives the grinding wheel to rotate. The housing is hinged to the fixed bracket. The front end of the push rod is located above the band saw guide and limit clamp, and the rear is connected to the drive linkage. The middle of the drive linkage is limited relative to the machine housing by a pin B. The housing is connected to the drive plate via a lead screw A. The front end of the drive plate is limited relative to the machine housing by a pin A. The drive plate has a bearing A. The machine housing has a motor B. The motor B is connected to a cam via a reducer. The cam has a bearing B. The outer ring of bearing A mates with the outer edge of the cam. The outer ring of bearing B mates with the lower part of the drive linkage. When bearing B drives the drive linkage to push the push rod towards the grinding wheel, the outer edge of the cam pushes bearing A upward, and the drive plate drives the housing to move upward. When the drive linkage drives the push rod to move away from the grinding wheel, the drive plate drives the housing to move downward.

2. The gear grinding machine according to claim 1, characterized in that: A torsion spring is fitted on the pin B, and the torsion arm of the torsion spring limits the non-bearing side of the drive connecting rod.

3. The gear grinding machine according to claim 1, characterized in that: The push rod includes a push head and a connecting part. The push head is fixed at the front end of the connecting part. A connecting fixing plate is provided at the lower end of the connecting part. The lead screw B fixes the connecting fixing plate to the connecting fixing block. The end of the lead screw B is provided with a push rod adjusting nut. The fixing screw connects the upper part of the drive connecting rod to the connecting fixing block.

4. The gear grinding machine according to claim 3, characterized in that: A bearing C is provided between the drive link and the connecting block, and the fixing screw passes through the inner ring of the bearing C.

5. The gear grinding machine according to claim 1, characterized in that: The chassis is equipped with a partition plate, and the pin B in the middle of the drive linkage is connected to the partition plate; the motor B and the reducer are fixed on the back side of the partition plate, and the drive shaft passes through the partition plate and is connected to the cam.

6. The gear grinding machine according to claim 1, characterized in that: The guide limit clamp consists of a first clamp and a second clamp, forming a band saw guide gap between them. The first clamp is connected to the front side plate of the chassis by a first screw, and the second clamp is connected to the middle partition by a second screw. The limit sleeve fitted on the second screw is located between the second clamp and the middle partition. The clamp adjustment bolt passes through the front side plate of the chassis, the first clamp, and the second clamp. An adjustment nut is provided on the clamp adjustment bolt on the outer side of the front side plate and the second clamp. A spring is provided on the clamp adjustment bolt, with one end of the spring abutting against the adjustment nut on the front side plate of the chassis and the other end abutting against the second clamp.

7. The gear grinding machine according to claim 6, characterized in that: The front end of the drive board is connected to the middle partition and the second clamping plate by a pin A.

8. The gear grinding machine according to claim 1, characterized in that: Lead screw A is connected to the top of the housing via the upper connecting plate and to the drive plate via the lower connecting plate. Lead screw A passes through the lead screw hole on the upper connecting plate. The upper limit adjusting nut and the lower limit adjusting nut are respectively provided on lead screw A above and below the upper connecting plate. The lower connecting plate is provided with a lead screw connecting sleeve and an adjusting fixing groove. Lead screw A is inserted into the lead screw connecting sleeve and fixed to the lower connecting plate. The fixing bolt passes through the adjusting fixing groove and the fixing hole on the drive plate to fix the lower connecting plate to the drive plate.

9. The gear grinding machine according to any one of claims 1-8, characterized in that: Support rods are hinged to the rear and left and right sides of the chassis. Each support rod includes a fixed section rod and an adjustable section rod. One end of the fixed section rod is hinged to the chassis. The adjustable section rod is inserted into the other end of the fixed section rod and fixed with the support rod adjusting bolt. Two rollers are provided at the end of the adjustable section rod, and the band saw is placed between the rollers.

10. The gear grinding machine according to claim 9, characterized in that: Guide wheels are provided on the machine housing on both sides of the band saw guide limit plate.

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