Adjustable gearbox for machine tool

Abstract

The utility model relates to the technical field of machine tool machining, in particular to an adjustable gear box for a machine tool, which comprises a box body, a first bearing is assembled on a side plate of the box body, an input shaft, a transmission shaft and an output shaft are assembled in the box body, the input shaft is meshed with the transmission shaft, and the input shaft is meshed with the transmission shaft. Kidney-shaped holes are formed in side plates, corresponding to the two ends of the output shaft, of the box body, and racks are arranged at the upper ends and the lower ends of the kidney-shaped holes; a third gear is sleeved on the first bearing sleeved on the transmission shaft, and the third gear is in meshed connection with the rack; through the matched design of a rack and a third gear, the transmission shaft meshed between the input shaft and the output shaft has adjustability, the gear assembly difficulty is reduced, and the use requirement for transmission variable pitch of the gearbox can be met; and moreover, the gear variable pitch adjustment can be performed outside, a gear box does not need to be disassembled, and the variable pitch adjustment is convenient and rapid.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool processing, in particular to an adjustable gear box for a machine tool. Background Art

[0002] In order to increase the output torque of the machine tool spindle, gearboxes are widely used in the industry. Gearboxes generally include an input shaft, an output shaft and a transmission shaft.

[0003] In traditional technology, the input shaft, output shaft, and transmission shaft in the gearbox are not adjustable after being assembled in the box. In order to ensure high-precision transmission, the gear center distance is strictly controlled during the assembly of the gearbox, which makes assembly difficult. In addition, during the actual use of the machine tool, the requirements for the rotation speed under different working conditions are also different. The non-adjustable gear center distance cannot meet the use requirements for variable pitch in machine tool applications. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an adjustable gear box for machine tools, so as to solve the problem that the gear center distance of the gear box in the prior art cannot be adjusted.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides an adjustable gear box for a machine tool, comprising a box body, a first bearing is mounted on the side plate of the box body, an input shaft, a transmission shaft and an output shaft are respectively mounted in the box body through the first bearing, the input shaft is meshed and connected with the transmission shaft, and the input shaft is meshed and connected with the transmission shaft;

[0006] The side plates of the box body corresponding to the two ends of the output shaft are provided with waist-shaped holes, and the upper and lower ends of the waist-shaped holes are provided with racks;

[0007] A third gear is sleeved on the first bearing sleeved on the transmission shaft, and the third gear is meshed and connected with the rack;

[0008] The center distance of the transmission shaft relative to the input shaft and the output shaft can be adjusted by rotating the third gear to move horizontally along the rack.

[0009] In one embodiment of the present invention, a mounting plate is disposed outside the box body, a second bearing is mounted on the mounting plate, and an end of the transmission shaft is movably connected to the second bearing.

[0010] In one embodiment of the utility model, the box body is provided with screw holes, and detachable bolts are matched in the screw holes; a waist-shaped through hole is provided on the mounting plate, and the mounting plate is detachably connected to the box body by bolts.

[0011] In an embodiment of the present invention, the diameter of the bolt tail is greater than the diameter of the waist-shaped through hole.

[0012] In one embodiment of the utility model, a first gear shaft is provided on the input shaft, and a second gear shaft is provided on the transmission shaft; a first gear is sleeved on the transmission shaft, and a second gear is provided on the output shaft, the first gear shaft is meshedly connected with the first gear, and the second gear shaft is meshedly connected with the second gear.

[0013] In an embodiment of the present invention, the first gear and the transmission shaft, and the second gear and the output shaft are connected via a key.

[0014] As described above, the adjustable gearbox for machine tools of the utility model has the following beneficial effects:

[0015] 1. By matching the meshing transmission rack and the third gear, when the gearbox is assembled or the transmission center distance of the gearbox needs to be adjusted in actual application, the purpose of adjusting the center distance of the transmission shaft relative to the input shaft and the output shaft can be achieved by rotating the third gear horizontally along the rack, thereby reducing the difficulty of gear assembly and meeting the use requirements of the gearbox transmission pitch change;

[0016] 2. By setting a mounting plate that can be detached from the gear box, after the gear box is assembled, the mounting plate can fix the end of the adjusted transmission shaft to prevent the gear box from moving freely during use and affecting the transmission effect of the gear box;

[0017] 3. The utility model provides an adjustable gearbox for machine tools, and the matching design of the rack and the third gear makes the transmission shaft meshing between the input shaft and the output shaft adjustable, thereby reducing the difficulty of gear assembly and meeting the use requirements of the gearbox transmission pitch change; moreover, the gear pitch adjustment can be performed externally without disassembling the gearbox, and the pitch adjustment is convenient and fast; the design of the detachable mounting plate can be moved to adapt to the adjustment of the transmission shaft and fix the end of the transmission shaft to improve the application effect of the gearbox; the overall design is reasonable, the structure is compact, and the practicability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a cross-sectional structural schematic diagram of the adjustable gear box for machine tools disclosed in the utility model.

[0019] Figure 2 Shown is a side structural schematic diagram of the adjustable gear box for machine tools disclosed in the utility model.

[0020] Figure 3 Display as Figure 2 Schematic diagram of the structure without the mounting plate.

[0021] Component number description

[0022] Box body 1; waist-shaped hole 11; screw hole 14; input shaft 2; first gear shaft 21; transmission shaft 3; second gear shaft 31; output shaft 4; first gear 5; second gear 6; rack 7; mounting plate 8; waist-shaped through hole 81; bolt 9; first bearing 10; third gear 12; second bearing 13. DETAILED DESCRIPTION

[0023] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0024] See also Figures 1 to 3 It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0025] See also Figure 1-3 The utility model provides an adjustable gearbox for a machine tool, comprising a box body 1, a first bearing 10 is mounted on the side plate of the box body 1, an input shaft 2, a transmission shaft 3 and an output shaft 4 are respectively mounted in the box body 1 through the first bearing 10, the input shaft 2 is connected to a motor or a reducer, and the output shaft 4 is connected to the main shaft of the machine tool; the input shaft 2 is meshed and connected with the transmission shaft 3, and the input shaft 2 is meshed and connected with the transmission shaft 3; specifically, a first gear 21 is provided on the input shaft 2, and a second gear 31 is provided on the transmission shaft 3; a first gear 5 is sleeved on the transmission shaft 3, and a second gear 6 is provided on the output shaft 4, the first gear 21 is meshed and connected with the first gear 5, and the second gear 31 is meshed and connected with the second gear 6; the first gear 5 and the transmission shaft 3, and the second gear 6 and the output shaft 4 are all connected by keys, and the input shaft 2 and the output shaft 4 are transmitted through the transmission shaft 3 to realize an output with a different speed ratio from the input, so that the machine tool can flexibly adjust the speed under different working conditions and improve the application effect of the machine tool.

[0026] The box body 1 is provided with waist-shaped holes 11 on the side panels at both ends of the output shaft 4, and racks 7 are provided at the upper and lower ends of the waist-shaped holes 11; a third gear 12 is sleeved on the first bearing 10 sleeved on the transmission shaft 3, and the third gear 12 is meshed and connected with the rack 7; when the gear box is assembled or when the transmission center distance of the gear box needs to be adjusted in actual application, the purpose of adjusting the center distance of the transmission shaft 3 relative to the input shaft 2 and the output shaft 4 can be achieved by rotating the third gear 12 to move horizontally along the rack 7, thereby reducing the difficulty of gear assembly and meeting the use requirements of the gear box transmission pitch change.

[0027] The housing 1 is provided with a mounting plate 8 on the outside, and a second bearing 13 is mounted on the mounting plate 8, and the end of the transmission shaft 3 is movably connected to the second bearing 13; the housing 1 is provided with a screw hole 14, and a detachable bolt 9 is matched in the screw hole 14; the mounting plate 8 is provided with a waist-shaped through hole 81, and the mounting plate 8 is detachably connected to the housing 1 through the bolt 9; the diameter of the tail of the bolt 9 is larger than the diameter of the waist-shaped through hole 81. After the gear box is assembled, the mounting plate 8 can move with the transmission shaft 3, and the mounting plate 8 can be connected to the housing 1 by adjusting the position of the bolt 9 in the waist-shaped through hole 81. The mounting plate 8 can fix the end of the adjusted transmission shaft 3 to prevent the gear box from moving freely during use and affecting the transmission effect of the gear box.

[0028] In summary, the adjustable gearbox for machine tools provided by the utility model, the matching design of the rack 7 and the third gear 12, makes the transmission shaft 3 meshing between the input shaft 2 and the output shaft 4 adjustable, reduces the difficulty of gear assembly, and can meet the use requirements of the gearbox transmission pitch change; and the gear pitch change adjustment can be performed outside the box body 1, without disassembling the gearbox, and the pitch change adjustment is convenient and fast; the design of the detachable mounting plate 8 can adapt to the adjustment of the transmission shaft 3 and move, and fix the end of the transmission shaft 3 to improve the application effect of the gearbox; the overall design is reasonable, the structure is compact, and the practicality is high. Therefore, the utility model effectively overcomes the various shortcomings of the prior art and has a high industrial utilization value.

[0029] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An adjustable gearbox for a machine tool, characterized in that: It comprises a box body, a first bearing is mounted on the side plate of the box body, an input shaft, a transmission shaft and an output shaft are respectively mounted in the box body through the first bearing, and the input shaft is meshed and connected with the transmission shaft; The side plates of the box body corresponding to the two ends of the output shaft are provided with waist-shaped holes, and the upper and lower ends of the waist-shaped holes are provided with racks; A third gear is sleeved on the first bearing sleeved on the transmission shaft, and the third gear is meshed and connected with the rack; The center distance of the transmission shaft relative to the input shaft and the output shaft can be adjusted by rotating the third gear to move horizontally along the rack.

2. The adjustable gear box for machine tools according to claim 1, characterized in that: A mounting plate is provided outside the box body, a second bearing is mounted on the mounting plate, and the end of the transmission shaft is movably connected to the second bearing.

3. The adjustable gear box for machine tools according to claim 2, characterized in that: The box body is provided with screw holes, in which detachable bolts are matched; a waist-shaped through hole is provided on the mounting plate, and the mounting plate is detachably connected to the box body through the bolts.

4. The adjustable gear box for machine tools according to claim 3, characterized in that: The diameter of the bolt tail is larger than the diameter of the waist-shaped through hole.

5. The adjustable gear box for machine tools according to claim 1, characterized in that: The input shaft is provided with a first gear shaft, and the transmission shaft is provided with a second gear shaft; the transmission shaft is sleeved with a first gear, and the output shaft is provided with a second gear, the first gear shaft is meshed and connected with the first gear, and the second gear shaft is meshed and connected with the second gear.

6. The adjustable gear box for machine tools according to claim 5, characterized in that: The first gear and the transmission shaft, as well as the second gear and the output shaft are connected via keys.

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