Integral gantry gearbox

Abstract

The utility model relates to an integral gantry gearbox. The technical problem that when an existing transmission shaft is damaged during operation, the whole transmission shaft needs to be replaced is solved. Comprising a gantry integral type box body, a main shaft body is arranged at one end of the gantry integral type box body, a main shaft motor is arranged on the inner side of the other end of the gantry integral type box body, a III-level transmission shaft is arranged on one side of the main shaft body, one end of the III-level transmission shaft is in linkage with the main shaft body, and the other end of the III-level transmission shaft is connected with a gear shifting type transmission mechanism; a second-stage large-torque gear and a second-stage high-speed gear are respectively arranged on the second-stage transmission shaft, a first-stage large-torque gear, a second-stage large-torque gear and a third-stage high-speed gear are respectively arranged at one end of the third-stage transmission shaft, and a gear shifting mechanism is arranged on the first-stage transmission shaft. The gear shifting device has the advantages that the gear shifting mechanism is arranged on the II-level transmission shaft, so that the operation abrasion of the III-level transmission shaft can be reduced, meanwhile, the whole appearance does not exceed the appearance size of the gantry integral box body, the light weight of an integral moving part is achieved, and the effect that the machining range of a workpiece is not limited is also ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing equipment, and specifically relates to an integral gantry gear box. Background Art

[0002] The gearbox for lathe is a key component of the vertical lathe. Its structure and performance are directly related to the performance of the lathe. With the continuous development of science and technology, higher requirements are put forward for all aspects of the equipment. The existing gearbox realizes the switching operation between high-speed gear and high-torque gear during use, and the moving parts are lightweight, saving a lot of space. However, most gearboxes directly connect the spindle to the spindle motor through a single drive shaft. Its structure is simple and the cost is low. However, if the drive shaft is damaged during operation, it needs to be replaced as a whole, and the operation is complicated and the cost is high. Summary of the invention

[0003] The purpose of the utility model is to provide an integral gantry gear box in view of the above problems.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an integral gantry gearbox, comprising an integral gantry housing, wherein a spindle body is rotatably provided at one end of the integral gantry housing, and a spindle motor is fixedly provided inside the other end, a level III transmission shaft rotatably installed in the integral gantry housing is provided on one side of the spindle body, the level I and II transmission shafts are axially extended and arranged along the integral gantry housing, and one end of the level III transmission shaft is linked to the spindle body, the other end of the level I and II transmission shafts is connected to a shifting transmission mechanism connected to the spindle motor and having a high-speed gear and a high-torque gear, the shifting transmission mechanism comprises a level II transmission shaft rotatably arranged in the integral gantry housing, a level II high-torque gear and a level II high-speed gear are respectively provided on the level II transmission shaft, a level III high-torque gear and a level III high-speed gear are respectively provided at one end of the level II transmission shaft, and a shifting mechanism is provided on the level II transmission shaft that enables the level II high-torque gear to mesh with the level III high-torque gear or the level II high-speed gear to mesh with the level III high-speed gear. The spindle body, spindle motor, II I level transmission shaft and shift transmission mechanism are all embedded in the gantry integral box, making the whole structure compact and lightweight. At the same time, the interference range for processing some deep cavity workpieces is very small, which ensures high precision and high rigidity of the transmission and expands the processing range. When the II level high torque gear is meshed with the II I level high torque gear, the high torque transmission of the spindle body is realized; when the II level high speed gear is meshed with the III level high speed gear, the high speed rotation of the spindle body is realized.

[0005] In the above-mentioned integral gantry gearbox, the shift mechanism includes a shift fork arranged on the II-level transmission shaft, and the II-level transmission shaft is a spline shaft, and the II-level high torque gear and the II-level high speed gear are axially movably arranged on the II-level transmission shaft. The II-level transmission shaft is fixed to the gantry integral box body, the II-level high torque gear, the II-level high speed gear and the shift mechanism are fixed to the II-level transmission shaft, and the II-level high torque gear and the II-level high speed gear are driven to move on the II-level transmission shaft by the shift fork, thereby realizing the switching between the high-speed gear and the high-torque gear.

[0006] In the above-mentioned one-piece gantry gearbox, a level I output gear is fixedly provided on the output shaft of the spindle motor, and the level I output gear meshes with a level II input gear fixedly provided at one end of the level II transmission shaft. The level I output gear is fixed to the spindle motor, and the level II input gear is fixed to the level II transmission shaft. There is a mutual meshing transmission relationship between the level I output gear and the level II input gear, and the spindle motor is started to drive the level II transmission shaft to rotate.

[0007] In the above-mentioned integral gantry gearbox, one end of the III-level transmission shaft extends to the outside of one end of the main shaft body located in the gantry integral housing, and the other end of the II-level transmission shaft extends to the outside of the II-level transmission shaft, and the III-level transmission shaft is parallel to the main shaft body and the II-level transmission shaft. The III-level transmission shaft is fixed to the gantry integral housing, and the III-level high torque gear and the III-level high speed gear are fixed to the input end of the III-level transmission shaft.

[0008] In the above-mentioned integral gantry gearbox, the end of the III-level transmission shaft located outside the main shaft body is provided with a III-level output gear meshing with the main shaft gear on the main shaft body. The III-level output gear is fixed to the output end of the III-level transmission shaft, and there is a meshing transmission relationship between the main shaft gear and the III-level output gear. The III-level transmission shaft is integrally fixed in the gantry integral housing, avoiding the accumulated coaxiality error and assembly coaxiality error caused by the transition connection in the middle of the long-distance transmission, thereby improving the accuracy and stability of the entire transmission chain.

[0009] In the above-mentioned integral gantry gearbox, a transmission housing is provided in the gantry integral housing, and the stage I output gear, stage II input gear, stage II high torque gear, stage II high speed gear, stage III high torque gear, stage III high speed gear and shifting mechanism are all arranged in the transmission housing.

[0010] In the above-mentioned integral gantry gearbox, one end of the III-level transmission shaft is passed through the transmission box and is rotatably connected to the transmission box through a first bearing, and the II-level transmission shaft is rotatably arranged between the two ends of the transmission box through a second bearing.

[0011] In the above-mentioned integral gantry gearbox, the diameter of the II-level high torque gear is smaller than the diameter of the I-II-level high torque gear, and the diameter of the II-level high speed gear is larger than the diameter of the I-II-level high speed gear.

[0012] In the above-mentioned integral gantry gearbox, the integral gantry case has a rectangular structure, an opening is provided on the inner circumferential side of one end of the integral gantry case, and a motor mounting groove extending axially inward is provided on the inner circumferential side of the other end.

[0013] In the above-mentioned integral gantry gearbox, the spindle body is axially arranged inside the integral gantry housing along the opening direction, and the spindle motor is arranged in the motor mounting groove.

[0014] Compared with the existing technology, the advantages of the utility model are:

[0015] 1. The device sets the shift mechanism on the II-level transmission shaft, which can reduce the running wear of the III-level transmission shaft and improve the overall service life of the gearbox. At the same time, the entire appearance does not exceed the overall dimensions of the gantry integral box itself, which not only achieves the lightweight of the overall moving parts, but also ensures that the workpiece processing range is not restricted.

[0016] 2. The device sets the level III high torque gear and the level III high speed gear on the level III transmission shaft, and the level II high torque gear and the level II high speed gear on the level II transmission shaft, and adjusts the gearbox through the shifting mechanism to achieve high torque transmission and high speed transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a structural sectional view of the utility model.

[0019] Figure 3 It is a structural sectional view of the utility model from another perspective.

[0020] In the figure: gantry integral housing 1, spindle body 11, spindle motor 12, level I output gear 13, spindle gear 14, transmission housing 15, first bearing 16, second bearing 17, opening 18, motor mounting groove 19, level III transmission shaft 2, level II high torque gear 21, level III high speed gear 22, level III output gear 23, shifting transmission mechanism 3, level II transmission shaft 31, level II high torque gear 32, level II high speed gear 33, level II input gear 34, shifting mechanism 4, shift fork 41. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] like Figure 1-3 As shown, an integral gantry gearbox comprises a gantry integral housing 1, a spindle body 11 is rotatably provided at one end of the gantry integral housing 1, a spindle motor 12 is fixedly provided inside the other end, a level III transmission shaft 2 rotatably installed in the gantry integral housing 1 is provided on one side of the spindle body 11, the level III transmission shaft 2 is axially extended along the gantry integral housing 1 and one end of the level III transmission shaft 2 is mutually linked with the spindle body 11, the other end of the level III transmission shaft 2 is connected with a shifting transmission mechanism 3 connected with the spindle motor 12 and having a high-speed gear and a high-torque gear, the shifting transmission mechanism 3 comprises a level II transmission shaft 31 rotatably provided in the gantry integral housing 1, a level II high-torque gear 32 and a level II high-speed gear 33 are respectively provided on the level II transmission shaft 31, and level I transmission shaft 2 is respectively provided at one end thereof. The II-level high torque gear 21 and the III-level high speed gear 22, the II-level transmission shaft 31 is provided with a shift mechanism 4 that can make the II-level high torque gear 32 mesh with the III-level high torque gear 21 or the II-level high speed gear 33 mesh with the III-level high speed gear 22. The spindle body 11, the spindle motor 12, the I and II-level transmission shaft 2 and the shift transmission mechanism 3 are all embedded in the gantry integral box 1, making the entire structure compact and lightweight, and at the same time, the interference range for processing some deep cavity workpieces is very small, that is, the high precision and high rigidity of the transmission are guaranteed, and the processing range is also expanded. When the II-level high torque gear 32 is meshed with the III-level high torque gear 21, the high torque transmission of the spindle body 1 is realized; when the II-level high speed gear 33 is meshed with the III-level high speed gear 22, the high speed rotation of the spindle body 1 is realized.

[0023] Specifically, the shift mechanism 4 includes a shift fork 41 arranged on the II-level transmission shaft 31, the II-level transmission shaft 31 is a spline shaft, and the II-level high torque gear 32 and the II-level high speed gear 33 are axially movably arranged on the II-level transmission shaft 31. The II-level transmission shaft 31 is fixed on the gantry integral box body 1, the II-level high torque gear 32, the II-level high speed gear 33 and the shift mechanism 4 are fixed on the II-level transmission shaft 31, and the II-level high torque gear 32 and the II-level high speed gear 33 are driven to move on the II-level transmission shaft 31 by the shift fork 41, so as to realize the switching between the high-speed gear and the high-torque gear.

[0024] Furthermore, a level I output gear 13 is fixedly provided on the output shaft of the spindle motor 12, and the level I output gear 13 meshes with a level II input gear 34 fixedly provided at one end of the level II transmission shaft 31. The level I output gear 13 is fixed to the spindle motor 12, and the level II input gear 34 is fixed to the level II transmission shaft 31. There is a mutual meshing transmission relationship between the level I output gear 13 and the level II input gear 34, and the spindle motor 12 is started to drive the level II transmission shaft 31 to rotate.

[0025] Furthermore, one end of the III-level transmission shaft 2 extends to the outside of one end of the main shaft body 11 located in the gantry integral housing 1 and the other end of the III-level transmission shaft 2 extends to the outside of the II-level transmission shaft 31, and the III-level transmission shaft 2 is parallel to the main shaft body 11 and the II-level transmission shaft 31. The II-level transmission shaft 2 is fixed to the gantry integral housing 1, and the III-level high torque gear 21 and the III-level high speed gear 22 are fixed to the input end of the III-level transmission shaft 2.

[0026] Preferably, one end of the III-level transmission shaft 2 located outside the main shaft body 11 is provided with a III-level output gear 23 meshing with the main shaft gear 14 on the main shaft body 11. The III-level output gear 23 is fixed to the output end of the III-level transmission shaft 2, and there is a meshing transmission relationship between the main shaft gear 14 and the III-level output gear 23. The III-level transmission shaft 2 is integrally fixed in the gantry integral housing 1, avoiding the accumulated coaxiality error and assembly coaxiality error caused by the transition connection in the middle of the long-distance transmission, thereby improving the accuracy and stability of the entire transmission chain.

[0027] like Figure 1 As shown, a transmission housing 15 is provided in the gantry integral housing 1, and the stage I output gear 13, the stage II input gear 34, the stage II high torque gear 32, the stage II high speed gear 33, the stage III high torque gear 21 and the stage III high speed gear 22 as well as the shifting mechanism 4 are all arranged in the transmission housing 15.

[0028] Combination Figure 2 and Figure 3As shown, one end of the III-level transmission shaft 2 is passed through the transmission housing 15 and is rotatably connected to the transmission housing 15 through a first bearing 16 , and the II-level transmission shaft 31 is rotatably arranged between the two ends of the transmission housing 15 through a second bearing 17 .

[0029] like Figure 1 As shown, the diameter of the II-level high torque gear 32 is smaller than the diameter of the III-level high torque gear 21 , and the diameter of the II-level high speed gear 33 is larger than the diameter of the III-level high speed gear 22 .

[0030] like Figure 3 As shown, the gantry integral housing 1 is of a rectangular structure, an opening 18 is provided on the inner side of one end of the gantry integral housing 1, and a motor mounting groove 19 extending axially inward is provided on the inner side of the other end.

[0031] The spindle body 11 is axially arranged inside the gantry integrated box body 1 along the direction of the opening 18 , and the spindle motor 12 is arranged in the motor installation groove 19 .

[0032] The principle of this embodiment is:

[0033] The spindle motor 12 drives the level I output gear 13 to rotate, and the level I output gear 13 drives the level II input gear 34 to rotate, and the level II transmission shaft 31 rotates through the level II input gear 34 while driving the level II high torque gear 32 and the level II high speed gear 33 to rotate together, and then the level II transmission shaft 31 is adjusted through the shift fork 41, so that the level III high speed gear 22 is meshed with the level II high speed gear 33 to drive the level I II transmission shaft 2 to rotate, and at the same time, the level III transmission shaft 2 drives the spindle body 11 through the level III output gear 23, thereby realizing high-speed rotation of the spindle body 11 and meeting the high-speed rotation requirement of the spindle body 11, or, the level III high torque gear 21 is meshed with the level II high torque gear 32 to drive the level III transmission shaft 2 to rotate, and at the same time, the level III transmission shaft 2 drives the spindle body 11 through the level III output gear 23, thereby realizing high-torque transmission of the spindle body 11 and meeting the high-torque cutting requirement of the spindle body 11.

[0034] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0035] Although the terminology such as gantry integral housing 1, spindle body 11, spindle motor 12, I-level output gear 13, spindle gear 14, transmission housing 15, first bearing 16, second bearing 17, opening 18, motor mounting slot 19, III-level transmission shaft 2, III-level high torque gear 21, III-level high speed gear 22, III-level output gear 23, shifting transmission mechanism 3, II-level transmission shaft 31, II-level high torque gear 32, II-level high speed gear 33, II-level input gear 34, shifting mechanism 4, shift fork 41 is used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. An integral gantry gearbox, comprising an integral gantry housing (1), wherein a spindle body (11) is rotatably provided at one end of the integral gantry housing (1), and a spindle motor (12) is fixedly provided inside the other end, characterized in that: A Class III transmission shaft (2) is rotatably mounted in the gantry integral housing (1) on one side of the spindle body (11); the Class III transmission shaft (2) is axially extending along the gantry integral housing (1) and one end of the Class III transmission shaft (2) is linked to the spindle body (11); the other end of the Class III transmission shaft (2) is connected to a shifting transmission mechanism (3) which is connected to the spindle motor (12) and has a high-speed gear and a high-torque gear; the shifting transmission mechanism (3) includes a gear rotatably mounted in the gantry integral housing (1 ), the II-level transmission shaft (31) is provided with a II-level high torque gear (32) and a II-level high speed gear (33), and one end of the III-level transmission shaft (2) is provided with a III-level high torque gear (21) and a III-level high speed gear (22), and the II-level transmission shaft (31) is provided with a shifting mechanism (4) capable of meshing the II-level high torque gear (32) with the III-level high torque gear (21) or meshing the II-level high speed gear (33) with the III-level high speed gear (22).

2. The integrated gantry gearbox according to claim 1, characterized in that: The shift mechanism (4) comprises a shift fork (41) arranged on a Class II transmission shaft (31), the Class II transmission shaft (31) is a spline shaft, and the Class II high torque gear (32) and the Class II high speed gear (33) are respectively axially movably arranged on the Class II transmission shaft (31).

3. The integrated gantry gearbox according to claim 2, characterized in that: A first-stage output gear (13) is fixedly arranged on the output shaft of the spindle motor (12), and the first-stage output gear (13) is meshed with a second-stage input gear (34) fixedly arranged on one end of a second-stage transmission shaft (31).

4. The integrated gantry gearbox according to claim 3, characterized in that: One end of the Class III transmission shaft (2) extends to the outside of one end of the main shaft body (11) located in the gantry integral box body (1), and the other end of the Class III transmission shaft (2) extends to the outside of the Class II transmission shaft (31), and the Class III transmission shaft (2) is parallel to the main shaft body (11) and the Class II transmission shaft (31).

5. The integrated gantry gearbox according to claim 1, characterized in that: The end of the III-level transmission shaft (2) located outside the main shaft body (11) is provided with a III-level output gear (23) meshing with the main shaft gear (14) on the main shaft body (11).

6. The integrated gantry gearbox according to claim 5, characterized in that: A transmission housing (15) is arranged inside the gantry integral housing (1), and the I-level output gear (13), the II-level input gear (34), the II-level high torque gear (32), the II-level high speed gear (33), the III-level high torque gear (21), the III-level high speed gear (22) and the shifting mechanism (4) are all arranged inside the transmission housing (15).

7. The integrated gantry gearbox according to claim 6, characterized in that: One end of the III-level transmission shaft (2) is inserted into the transmission housing (15) and is rotatably connected to the transmission housing (15) via a first bearing (16); the II-level transmission shaft (31) is rotatably arranged between the two ends of the transmission housing (15) via a second bearing (17).

8. The integrated gantry gearbox according to claim 6, characterized in that: The diameter of the II-level high torque gear (32) is smaller than the diameter of the III-level high torque gear (21), and the diameter of the II-level high speed gear (33) is larger than the diameter of the III-level high speed gear (22).

9. The integrated gantry gearbox according to claim 1, characterized in that: The gantry integral housing (1) is of rectangular structure, and an opening (18) is provided on the inner side of one end of the gantry integral housing (1), and a motor mounting groove (19) extending axially inward is provided on the inner side of the other end of the gantry integral housing (1).

10. An integrated gantry gearbox according to claim 9, characterized in that: The spindle body (11) is axially arranged on the inner side of the gantry integral box body (1) along the direction of the opening (18), and the spindle motor (12) is arranged in the motor installation groove (19).

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