Speed reducer special for board sawing machine

Abstract

The utility model relates to a special speed reducer for a panel saw, which comprises a box body, an input shaft, an output shaft and a saw disc, the input shaft and the output shaft are rotatably arranged in the box body, the saw disc is fixedly connected to the end part of the output shaft penetrating out of the box body, the special speed reducer further comprises a worm gear, a worm and an intermediate shaft, the input shaft is connected with an input pinion, and the output shaft is connected with an output pinion. The worm is rotationally arranged in the box body and connected with an input large gear meshed with the input small gear, the intermediate shaft is rotationally arranged in the box body and connected with an output driving gear, and the worm gear is connected to the intermediate shaft and meshed with the worm. And the output shaft is connected with an output driven gear meshed with the output driving gear. The speed reducer special for the plate sawing machine can drive the saw disc to achieve a larger cutting radius so as to meet the requirement for the cutting radius when the plate sawing machine cuts plate-shaped steel.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission equipment, in particular to a special reducer for a panel saw machine. Background Art

[0002] With the transformation of industrial modernization and digitalization, the previous processes for cutting plate steel, such as flame cutting, plasma cutting, laser cutting, and water jet cutting, are not satisfactory in terms of material loss, cutting efficiency, or energy consumption. In pursuit of more efficient and energy-saving cutting processes, saw machine manufacturers, as industrial mother machines, have proposed a cutting process using super-hard alloy saw blades, but this has extremely stringent performance requirements for the saw blade spindle drive.

[0003] In the prior art, for example, the utility model patent: A Saw Machine Reducer (Announcement No.: CN218480108U) discloses a reducer in which the input shaft and the output shaft are driven by a small gear and a large gear to drive the saw blade on the output shaft to rotate. However, in the reducer with the above structure, the output shaft of the reduced output cannot meet the performance requirements of the chip radius when the saw blade cuts plate-shaped steel.

[0004] In view of the above problems, the present invention makes improvements. Utility Model Content

[0005] The utility model provides a special speed reducer for a panel saw machine, which solves the above-mentioned problems existing in the prior art during use.

[0006] The technical solution of the present utility model is achieved as follows:

[0007] A special reducer for a panel saw machine includes a housing, an input shaft, an output shaft and a saw disc, wherein the input shaft and the output shaft are rotatably arranged in the housing, and the saw disc is fixedly connected to the end of the output shaft passing through the housing. It also includes a worm wheel, a worm and an intermediate shaft, wherein the input shaft is connected to an input pinion, the worm is rotatably arranged in the housing and the worm is connected to an input large gear meshing with the input pinion, the intermediate shaft is rotatably arranged in the housing and the intermediate shaft is connected to an output driving gear, the worm wheel is connected to the intermediate shaft and meshes with the worm, and the output shaft is connected to an output driven gear meshing with the output driving gear.

[0008] Preferably, the worm is a double-lead worm, the end of the worm close to the input gear is rotatably arranged in the housing through a first bearing, the end of the worm away from the input gear is key-connected to a support ring rotatably arranged in the housing through a second bearing, a fastening ring is connected to the end face of the support ring through a plurality of first bolts, an adjusting bolt passing through the housing is threaded into the fastening ring, a second bolt threaded onto the worm is passed into the adjusting bolt, a locking slot along the axial direction of the fastening ring is opened on the fastening ring, and a third bolt passing through the locking slot is threaded onto the fastening ring.

[0009] Preferably, an adjustment shield covering the adjustment bolts is connected to the outer wall of the box body via a plurality of fourth bolts.

[0010] Preferably, the ends of the intermediate shaft close to the worm gear and the output driving gear are rotatably arranged in the box through a third bearing and a fourth bearing respectively, and an anti-backlash gear connected to the end face of the output driving gear is passed through the middle.

[0011] Preferably, the two ends of the output shaft away from the saw disk and close to the saw disk are rotatably arranged in the box body through the fifth bearing and the sixth bearing respectively, and a step surface is formed on the end of the output shaft passing through the box body, and the step surface is connected to an inner chuck passing through the output shaft through a plurality of fifth bolts, and the saw disk is passed through the output shaft and fits on the inner chuck, and an outer chuck that cooperates with the inner chuck to clamp the saw disk is connected to the end surface of the output shaft through the sixth bolt, and a plurality of positioning pins passing through the saw disk are provided between the inner chuck and the outer chuck.

[0012] Preferably, the opening of the box body for the output shaft to pass through is connected to an output cover located on the inner side of the inner chuck, and a sealing convex ring is formed on the end face of the output cover facing the inner chuck, and a sealing ring groove matching the sealing convex ring is formed on the end face of the inner chuck facing the output cover, and the sealing convex ring passes into the sealing ring groove.

[0013] Preferably, the fourth bearing and the sixth bearing are needle roller bearings.

[0014] To sum up, the beneficial effects of the present invention are: the input shaft and the output shaft form a right-angle transmission, so that the reducer can be better used in the chip direction track of the panel saw machine. The reducer has a three-stage transmission structure inside, and the three-stage transmission (i.e., the output stage) is a speed-increasing transmission, so that the output shaft drives the saw disc to rotate with a higher speed and forms a larger chip radius, which can better meet the requirements for the chip radius when cutting plate-shaped steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0017] Figure 2 for Figure 1 A magnified schematic diagram of point A in the middle;

[0018] Figure 3 It is a cross-sectional schematic diagram of another direction of the utility model;

[0019] Figure 4 for Figure 3 A magnified schematic diagram of point B in the middle;

[0020] Figure 5 It is a cross-sectional schematic diagram of the fastening ring in the present utility model.

[0021] In the figure: 1. Housing; 2. Input shaft; 3. Output shaft; 4. Saw disc; 5. Turbine; 6. Worm; 7. Intermediate shaft; 8. Input pinion; 9. Input gear; 10. Output driving gear; 11. Output driven gear; 12. First bearing; 13. Second bearing; 14. Support ring; 15. First bolt; 16. Fastening ring; 161. Locking gap; 17. Adjusting bolt; 18. Second bolt; 19. Third bolt; 20. Fourth bolt; 21. Adjusting shield; 22. Third bearing; 23. Fourth bearing; 24. Anti-backlash gear; 25. Fifth bearing; 26. Sixth bearing; 27. Fifth bolt; 28. Inner chuck; 281. Sealing ring groove; 29. ​​Sixth bolt; 30. Outer chuck; 31. Positioning pin shaft; 32. Output through cover; 321. Sealing cam; 33. Seventh bolt. DETAILED DESCRIPTION

[0022] The following is a combination of the appended examples of the present invention Figure 1-5 , clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0023] As shown in the figure, a special reducer for a panel saw machine includes a housing 1, an input shaft 2, an output shaft 3, a saw disc 4, a worm wheel 5, a worm 6 and an intermediate shaft 7. The input shaft 2 and the output shaft 3 are rotatably arranged in the housing 1, the saw disc 4 is fixedly connected to the end of the output shaft 3 passing through the housing 1, the input shaft 2 is connected to an input pinion 8, the worm 6 is rotatably arranged in the housing 1 and the worm 6 is connected to an input large gear 9 meshing with the input pinion 8, the intermediate shaft 7 is rotatably arranged in the housing 1 and the intermediate shaft 7 is connected to an output active gear. Gear 10, the worm wheel 5 is connected to the intermediate shaft 7 and meshes with the worm 6, the output shaft 3 is connected with an output driven gear 11 meshing with the output driving gear 10, the input pinion 8 and the input gear 9 constitute a primary transmission (i.e., the input stage), the worm 6 and the worm wheel 5 constitute a secondary transmission, and the output driving gear 10 and the output driven gear 11 constitute a tertiary transmission (i.e., the output stage), wherein the speed ratio of the primary transmission is set to 1.62, and the speed ratio of the whole machine is set to 21.807, so that the three-stage transmission constitutes a speed-increasing transmission.

[0024] In the above structure, the input shaft 2 and the output shaft 3 are driven at right angles by the worm wheel 5 and the worm 6, which makes the main motor connected to the input shaft 2 and the output shaft 3 form a right-angle transmission, so that the reducer is better suitable for the chip direction track of the sawing machine, and the angular transmission is realized by the worm wheel 5 and the worm 6. Based on the transmission characteristics of the worm wheel 5 and the worm 6, the transmission efficiency is improved while the transmission is smooth. The three-stage transmission structure mentioned above realizes the speed increase transmission of the three-stage transmission (i.e., the output stage), so that when the output shaft 3 drives the saw disk 4 to rotate, It has a higher rotation speed and forms a larger chip radius, which can better meet the chip radius requirements when cutting plate-shaped steel. The speed ratio of the first-stage transmission is 1.62, and the speed ratio of the whole machine is 21.807. Therefore, the speed ratio of the second and third-stage transmissions is 13.5, which makes the impact of the backlash of the first-stage transmission on the output shaft 3 1 / 13.5, and plays the role of "error attenuation", that is, the backlash of the first-stage transmission has little effect on the output accuracy of the output shaft 3, thereby ensuring that the linear speed of the saw disk 4 driven by the output shaft 3 remains stable, ensuring the chip quality of the sawing machine.

[0025] In addition, on the basis of the above structure, in order to reduce the backlash of the secondary transmission, the worm 6 is a double-lead worm 6, and the end of the worm 6 close to the input gear 9 is rotatably set in the housing 1 through a first bearing 12, and the end of the worm 6 away from the input gear 9 is key-connected with a support ring 14 rotatably set in the housing 1 through a second bearing 13, and the end face of the support ring 14 is connected to a fastening ring 16 through a plurality of first bolts 15, and an adjusting bolt 17 passing through the housing 1 is threaded into the fastening ring 16, and a second bolt 18 threaded into the adjusting bolt 17 is threaded into the worm 6, and a locking slot 161 along the axial direction of the fastening ring 16 is opened on the fastening ring 16, and a third bolt 19 passing through the locking slot 161 is threaded into the fastening ring 16.

[0026] In the above preferred structure, the fastening ring 16 and the adjusting bolt 17 constitute a locking mechanism for the axial displacement of the worm 6. When the reducer is in working condition, the first bolt 15 realizes the fastening of the fastening ring 16 and the support ring 14, and the second bolt 18 realizes the fastening between the adjusting bolt 17 and the worm 6. After the third bolt 19 is tightened, the locking gap 161 is tightened to make the fastening ring 16 hold the adjusting bolt 17 tightly and realize the fastening of the fastening ring 16 and the adjusting bolt 17. When the worm 6 rotates, the support ring 14, the fastening ring 16 and the adjusting bolt 17 rotate synchronously with the worm 6. When the gap between the worm 6 and the worm wheel 5 increases, the first bolt 15, the second bolt 18 and the third bolt 1 are loosened. 9. Under the premise that the fixing ring 16 does not rotate, turn the adjusting bolt 17 clockwise, and the adjusting bolt 17 will generate axial displacement in the fixing ring 16 and push the worm 6 to generate axial displacement. After the adjustment is in place (that is, when the back clearance between the worm wheel 5 and the worm 6 is appropriate), tighten the first bolt 15, the second bolt 18 and the third bolt 19 in sequence to adjust the gap between the worm 6 and the worm wheel 5, thereby ensuring the transmission accuracy of the secondary transmission, and then ensuring the transmission accuracy of the whole machine so that the linear speed of the saw disk 4 during rotation remains stable, ensuring the chip quality of the sawing machine. In addition, the operation of adjusting the gap between the worm 6 and the worm wheel 5 does not require disassembling the machine, and the operation is relatively convenient.

[0027] Preferably, an adjustment shield 21 covering the adjustment bolt 17 is connected to the outer wall of the box body 1 through a number of fourth bolts 20. When the reducer is working, the adjustment shield 21 covers the outside of the adjustment bolt 17 to prevent misoperation of the adjustment bolt 17. When the backlash of the secondary transmission needs to be adjusted, the adjustment shield 21 can be removed by unscrewing the fourth bolts 20.

[0028] In addition, in the technology of the above structure, in order to reduce the backlash of the three-stage transmission, the two ends of the intermediate shaft 7 close to the worm gear 5 and close to the output driving gear 10 are rotatably arranged in the housing 1 through the third bearing 22 and the fourth bearing 23 respectively, and the middle is penetrated by a backlash-eliminating gear 24 connected to the end face of the output driving gear 10.

[0029] In the above preferred structure, the working principle of the anti-backlash gear 24 is as follows: an arc-shaped adjustment groove is provided on the anti-backlash gear 24, and a seventh bolt 33 screwed to the output driving gear 10 is passed through the arc-shaped adjustment groove to realize the fastening of the anti-backlash gear 24 and the output driving gear 10. By loosening the seventh bolt 33 and rotating the anti-backlash gear 24 so that the anti-backlash gear 24 is close to the non-working tooth surface of the output driven gear 11, and then tightening the seventh bolt 33, the backlash between the output driving gear 10 and the output driven gear 11 can be adjusted, thereby ensuring the transmission accuracy of the three-stage transmission, and then the transmission accuracy of the whole machine so that the linear speed of the saw disk 4 during rotation remains stable, thereby ensuring the chip quality of the sawing machine.

[0030] In addition, on the basis of the above structure, in order to enhance the stability of the saw disk 4 connected to the output shaft 3 and reduce the jumping of the saw disk 4 when rotating and cutting chips, the two ends of the output shaft 3 away from the saw disk 4 and close to the saw disk 4 are respectively rotatably set in the box body 1 through the fifth bearing 25 and the sixth bearing 26. The end of the output shaft 3 passing through the box body 1 is formed with a step surface, and the step surface is connected to an inner chuck 28 passing through the output shaft 3 through a plurality of fifth bolts 27. The saw disk 4 is passed through the output shaft 3 and fits on the inner chuck 28. The end face of the output shaft 3 is connected to an outer chuck 30 that cooperates with the inner chuck 28 to clamp the saw disk 4 through the sixth bolt 29. The inner chuck 28 and the outer chuck 30 are provided with a plurality of positioning pins 31 passing through the saw disk 4 between the inner chuck 28 and the outer chuck 30.

[0031] In the above structure, the inner chuck 28 is firmly connected to the step surface through the fifth bolt 27 and is firmly connected to the output rear. After the outer chuck 30 cooperates with the inner chuck 28 to clamp the saw disc 4, the saw disc 4 has a larger contact area with the inner chuck 28 and the outer chuck 30, and the rotation of the saw disc 4 relative to the inner chuck 28 and the outer chuck 30 is limited by the positioning pin 31, thereby enhancing the stability of the saw disc 4 connected to the output shaft 3, reducing the vibration of the saw disc 4 when it rotates to cut chips, and ensuring the chip quality of the sawing machine. When the saw disc 4 needs to be replaced, the saw disc 4 can be removed by unscrewing the sixth bolt 29, which facilitates the operation when replacing the saw disc 4.

[0032] Preferably, the opening of the box body 1 for the output shaft 3 to pass through is connected to an output cover 32 located on the inner side of the inner chuck 28, and a sealing convex ring 321 is formed on the end surface of the output cover 32 facing the inner chuck 28, and a sealing ring groove 281 matching the sealing convex ring 321 is formed on the end surface of the inner chuck 28 facing the output cover 32. The sealing convex ring 321 passes into the sealing ring groove 281, and the sealing convex ring 321 cooperates with the sealing ring groove 281 to block the debris generated when the saw disk 4 cuts chips, preventing the debris from entering the inside and affecting the rotation of the output shaft 3, thereby ensuring the stability of the output shaft 3 during rotation and ensuring the chip quality of the sawing machine.

[0033] In addition, on the basis of the above structure, in order to further reduce the vibration of the saw disk 4 when it rotates and cuts chips, the fourth bearing 23 and the sixth bearing 26 are needle bearings. Based on the characteristics of needle bearings, the output shaft 3 and the intermediate shaft 7 can withstand a larger radial load, thereby ensuring that the output shaft 3 can stably drive the saw disk 4 to rotate for chip cutting, preventing the saw disk 4 from jumping and ensuring the chip quality of the sawing machine.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A special speed reducer for a panel saw, comprising a housing (1), an input shaft (2), an output shaft (3) and a saw disc (4), wherein the input shaft (2) and the output shaft (3) are rotatably arranged in the housing (1), and the saw disc (4) is fixedly connected to the end of the output shaft (3) passing through the housing (1), characterized in that: The invention also includes a worm wheel (5), a worm (6) and an intermediate shaft (7), wherein the input shaft (2) is connected to an input pinion (8), the worm (6) is rotatably arranged in the housing (1), and the worm (6) is connected to an input gear (9) meshing with the input pinion (8), the intermediate shaft (7) is rotatably arranged in the housing (1), and the intermediate shaft (7) is connected to an output driving gear (10), the worm wheel (5) is connected to the intermediate shaft (7) and meshes with the worm (6), and the output shaft (3) is connected to an output driven gear (11) meshing with the output driving gear (10).

2. The special speed reducer for panel saw according to claim 1, characterized in that: The worm (6) is a double-lead worm (6), the end of the worm (6) close to the input gear (9) is rotatably arranged in the housing (1) through a first bearing (12), the end of the worm (6) away from the input gear (9) is key-connected to a support ring (14) rotatably arranged in the housing (1) through a second bearing (13), the end surface of the support ring (14) is connected to a fastening ring (16) through a plurality of first bolts (15), an adjusting bolt (17) passing through the housing (1) is screwed into the fastening ring (16), a second bolt (18) screwed into the worm (6) is passed through the adjusting bolt (17), a locking slot (161) along the axial direction of the fastening ring (16) is opened on the fastening ring (16), and a third bolt (19) passing through the locking slot (161) is screwed into the fastening ring (16).

3. The special speed reducer for panel saw according to claim 2, characterized in that: An adjustment shield (21) covering the adjustment bolts (17) is connected to the outer wall of the box body (1) via a plurality of fourth bolts (20).

4. The special speed reducer for panel saw according to claim 3, characterized in that: The two ends of the intermediate shaft (7) close to the worm gear (5) and the output driving gear (10) are rotatably arranged in the box body (1) through a third bearing (22) and a fourth bearing (23), respectively. A backlash-eliminating gear (24) connected to the end face of the output driving gear (10) is provided on the intermediate shaft.

5. The special speed reducer for panel saw according to claim 4, characterized in that: The two ends of the output shaft (3) away from the saw disc (4) and close to the saw disc (4) are rotatably arranged in the box body (1) through the fifth bearing (25) and the sixth bearing (26) respectively. The end of the output shaft (3) passing through the box body (1) is formed with a step surface, and the step surface is connected to an inner chuck (28) passing through the output shaft (3) through a plurality of fifth bolts (27). The saw disc (4) is passed through the output shaft (3) and fits on the inner chuck (28). The end face of the output shaft (3) is connected to an outer chuck (30) that cooperates with the inner chuck (28) to clamp the saw disc (4) through the sixth bolt (29). A plurality of positioning pins (31) passing through the saw disc (4) are provided between the inner chuck (28) and the outer chuck (30).

6. The special speed reducer for panel saw according to claim 5, characterized in that: An output cover (32) located on the inner side of the inner chuck (28) is connected to the opening of the box body (1) through which the output shaft (3) passes. A sealing convex ring (321) is formed on the end surface of the output cover (32) facing the inner chuck (28). A sealing ring groove (281) matching the sealing convex ring (321) is formed on the end surface of the inner chuck (28) facing the output cover (32). The sealing convex ring (321) passes into the sealing ring groove (281).

7. The special speed reducer for panel saw according to claim 6, characterized in that: The fourth bearing (23) and the sixth bearing (26) are needle roller bearings.

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