Automatic three-gear gearbox and turn-milling composite numerical control machine tool

Abstract

The utility model discloses an automatic three-gear gearbox and a turn-milling composite numerical control machine tool, which belong to the technical field of turn-milling composite numerical control, and comprise a shell, an input shaft and an output shaft are arranged in the shell, two sides of the input shaft are respectively provided with a transmission shaft and an induction shaft, and the input shaft is provided with an input shaft gear and a sixth gear. The input shaft gear is connected with the transmission shaft through a first gear, the first gear is arranged on the transmission shaft, a fourth gear and a fifth gear are movably arranged on the output shaft, the fourth gear can be connected with a sixth gear, a second gear and a third gear are arranged on the transmission shaft, and the second gear can be connected with the fourth gear. The third gear can be connected with the fifth gear, the transmission shaft and the induction shaft are arranged in the shell, a movable gear shifting fork is installed on the induction shaft, and one end of the gear shifting fork is arranged between the fourth gear and the fifth gear. And the production land and labor are greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of turning-milling compound numerical control, and more specifically relates to an automatic three-speed gearbox and a turning-milling compound numerical control machine tool. Background Art

[0002] Most of the existing CNC lathes can only perform turning processing and have a single function. In addition, the main motor of most CNC lathes is directly connected to the spindle through a belt. This structure is prone to sudden spindle stops when processing some irregular workpieces or requiring a large amount of cutting, which greatly increases the land, energy and labor used by production enterprises. Utility Model Content

[0003] The main purpose of the utility model is to provide an automatic three-speed gearbox and a turning-milling compound CNC machine tool to solve the problems of the above-mentioned background technology.

[0004] According to a first aspect of the utility model, an automatic three-speed gearbox is provided, comprising a housing, an input shaft and an output shaft are arranged in the housing, a transmission shaft and an induction shaft are arranged on both sides of the input shaft, an input shaft gear and a sixth gear are arranged on the input shaft, the input shaft gear is connected to the transmission shaft through a first gear, the first gear is arranged on the transmission shaft, a fourth gear and a fifth gear are movably arranged on the output shaft, the fourth gear can be connected to the sixth gear, a second gear and a third gear are arranged on the transmission shaft, the second gear can be connected to the fourth gear, the third gear can be connected to the fifth gear, the transmission shaft and the induction shaft are arranged in the housing, a movable shift fork is installed on the induction shaft, and one end of the shift fork is arranged between the fourth gear and the fifth gear.

[0005] In a specific embodiment of the utility model, a plurality of recesses are provided on the sensing shaft, and the shift fork can move back and forth along the length direction of the sensing shaft and can be inserted into each of the recesses for fixing.

[0006] In a specific embodiment of the present invention, a sensing head is installed on the sensing shaft.

[0007] In a specific embodiment of the utility model, a rotatable screw is provided between the output shaft and the induction shaft, a protrusion is provided on the screw, and the protrusion is fixedly connected to the shift fork through a bolt.

[0008] In a specific embodiment of the present invention, the screw rod is connected to the gear shifting motor.

[0009] In a specific embodiment of the present invention, the fourth gear is provided with external teeth and internal teeth, the external teeth are meshed and connected with the second gear, and the internal teeth are meshed and connected with the sixth gear.

[0010] In a specific embodiment of the present invention, the shift fork can move toward the direction of the fifth gear to enable the fifth gear to mesh with the third gear; the shift fork can move toward the direction of the fourth gear to enable the fourth gear to mesh with the sixth gear, or to mesh with the second gear.

[0011] In a specific embodiment of the present invention, the second gear is arranged in the middle of the transmission shaft, and the first gear and the third gear are fixedly arranged at two ends of the transmission shaft respectively.

[0012] According to a second aspect of the present utility model, there is provided a turning-milling compound CNC machine tool, which uses the automatic three-speed gearbox.

[0013] According to the second aspect of the utility model, it also includes a body base, on which a main motor and a spindle box are fixedly arranged, the main motor is arranged on one side of the automatic three-speed gearbox, a chuck is connected to the spindle box, and a movable saddle and tailstock are also arranged on the body base, a slide plate is movably arranged on the saddle, and a Y-axis turret is arranged on the slide plate.

[0014] One of the above technical solutions of the utility model has at least one of the following advantages or beneficial effects:

[0015] This automatic three-speed gearbox drives the input shaft gear through the input shaft, and the input shaft gear drives the transmission shaft through the first gear, and the transmission shaft drives the second gear and the third gear. When the shift fork moves toward the sixth gear, the fourth gear is meshed and connected with the sixth gear, thereby switching to a high-speed gear; when the shift fork moves toward the fifth gear, the fifth gear is meshed and connected with the third gear, thereby switching to a low-speed gear; when the shift fork moves toward the second gear, the fourth gear is meshed and connected with the second gear, thereby switching to a medium-speed gear. This turning-milling compound CNC machine tool uses this automatic three-speed gearbox, which can automatically shift gears according to the processing conditions, and the spindle will not suddenly stop. It also has the function of combining turning and milling, which greatly reduces the land, energy and labor used by production enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0017] Figure 1 It is a structural schematic diagram of a turning-milling compound CNC machine tool in one embodiment of the utility model;

[0018] Figure 2 It is a cross-sectional view of an automatic three-speed gearbox in one embodiment of the utility model. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0023] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be internal connection between two elements, indirect connection, or an interactive relationship between two elements.

[0024] The following disclosure provides many different embodiments or examples for implementing different solutions of the present invention.

[0025] Reference Figure 1 to Figure 2As shown, an automatic three-speed gearbox is provided, including a housing 1, an input shaft 21 and an output shaft 41 are arranged in the housing 1, a transmission shaft 37 and a sensing shaft 5 are arranged on both sides of the input shaft 21, an input shaft gear 22 and a sixth gear 36 are arranged on the input shaft 21, the input shaft gear 22 is connected to the transmission shaft 37 through a first gear 31, the first gear 31 is arranged on the transmission shaft 37, a fourth gear 34 and a fifth gear 35 are movably arranged on the output shaft 41, the fourth gear 34 can be connected to the sixth gear 36, a second gear 32 and a third gear 33 are arranged on the transmission shaft 37, the second gear 32 can be connected to the fourth gear 34, the third gear 33 can be connected to the fifth gear 35, the transmission shaft 37 and the sensing shaft 5 are arranged in the housing 1, a movable shift fork 51 is installed on the sensing shaft 5, and one end of the shift fork 51 is arranged between the fourth gear 34 and the fifth gear 35.

[0026] In this embodiment, the input shaft 21 drives the input shaft gear 22, the input shaft gear 22 drives the first gear 31, the first gear 31 drives the transmission shaft 37, the transmission shaft 37 drives the second gear 32 and the third gear 33 on the shaft, the second gear 32 is meshed and connected with the fourth gear 34 on the output shaft 41, and the gear output by the output shaft 41 is the medium speed gear; the third gear 33 is meshed and connected with the fifth gear 35, and the output gear is the low speed gear; the sixth gear 36 on the input shaft 21 is meshed and connected with the fourth gear 34, and the output gear is the high speed gear, and the high speed gear reduces the kinetic energy lost by the transmission of the transmission shaft 37, so that the kinetic energy generated by the input shaft 21 directly acts on the output shaft 41. Of course, the gear position on the transmission shaft 37 is fixed, and the fourth gear 34 and the fifth gear 35 need to be pushed by the shift fork 51 to mesh with other gears to achieve the purpose of shifting.

[0027] When the shift fork 51 pushes the fourth gear 34 to move toward the sixth gear 36, the fourth gear 34 is meshed with the sixth gear 36 and switched to a high-speed gear; when the shift fork 51 pushes the fourth gear 34 to move toward the second gear 32, the fourth gear 34 is meshed with the second gear 32 and switched to a medium-speed gear; when the shift fork 51 pushes the fifth gear 35 to move toward the third gear 33, the fifth gear 35 is meshed with the third gear 33 and switched to a low-speed gear, which enables the turning-milling compound CNC lathe to automatically shift gears according to the processing conditions, thereby reducing labor costs.

[0028] In one embodiment of the utility model, a plurality of recesses 52 are provided on the sensing shaft 5, and the shift fork 51 can move back and forth along the length direction of the sensing shaft 5, and can be inserted into each recess 52 for fixing. A sensing head 53 is installed on the sensing shaft 5, and the shift fork 51 pushes the fourth gear 34 and the fifth gear 35 to engage with other gears for shifting. The sensing head 53 above the shift fork 51 is used to sense that when the shift fork 51 is inserted into the recess 52, it indicates that the shifting is completed, and the shift fork 51 stops moving.

[0029] In one embodiment of the utility model, a rotatable screw rod 6 is provided between the output shaft 41 and the sensing shaft 5, and a protrusion 61 is provided on the screw rod 6. The protrusion 61 is fixedly connected to the shift fork 51 by a bolt, and the screw rod 6 is connected to the shift motor. The shift motor drives the screw rod 6 to rotate, so that the shift fork 51 moves, thereby pushing the fourth gear 34 and the fifth gear 35 to move. When the sensing head 53 senses that the shift fork 51 is stuck in the recess 52, the shift motor stops rotating.

[0030] In one embodiment of the utility model, the fourth gear 34 is provided with an outer tooth 341 and an inner tooth 342, the outer tooth 341 is meshedly connected with the second gear 32, and the inner tooth 342 is meshedly connected with the sixth gear 36. The inner tooth 342 of the fourth gear 34 moves toward the direction of the sixth gear 36 and meshes with the outer tooth of the sixth gear 36, directly transmitting the kinetic energy of the input shaft 21 to the output shaft 41, reducing energy loss, thereby achieving the effect of a high gear.

[0031] Furthermore, the shift fork 51 can move toward the fifth gear 35 to mesh with the third gear 33 ; the shift fork 51 can move toward the fourth gear 34 to mesh with the sixth gear 36 or with the second gear 32 .

[0032] In one embodiment of the utility model, the second gear 32 is arranged in the middle of the transmission shaft 37, the first gear 31 and the third gear 33 are respectively fixedly arranged at the two ends of the transmission shaft 37, the sixth gear 36 is fixedly arranged at one end of the input shaft 21, the other end of the input shaft 21 is connected to the input pulley 23, the input shaft gear 22 is arranged on one side of the sixth gear 36, the fourth gear 34 is arranged at one end of the output shaft 41 close to the sixth gear 36, the other end of the output shaft 41 is connected to the output pulley 38, and the fifth gear 35 is arranged on one side of the fourth gear 34.

[0033] According to a second aspect of the present utility model, there is provided a turning-milling compound CNC machine tool which uses an automatic three-speed gearbox.

[0034] According to the second aspect of the embodiment of the utility model, it also includes a body base 100, on which a main motor and a spindle box 101 are fixedly arranged, the main motor is arranged on one side of the automatic three-speed gearbox, a chuck 102 is connected to the spindle box 101, and a movable saddle 103 and a tailstock 104 are also arranged on the body base 100, a slide plate 105 is movably arranged on the saddle 103, and a Y-axis turret 106 is arranged on the slide plate 105.

[0035] In this embodiment, the workpiece is clamped by the chuck 102, the main motor drives the automatic three-speed gearbox through a belt, and the automatic three-speed gearbox drives the spindle on the spindle box 101 through a belt, and the spindle is connected to the chuck 102 to rotate and generate cutting force. The saddle 103 is controlled by the Z-axis servo motor connected to the Z-axis lead screw, so that the saddle 103 can move forward and backward, and the slide 105 is controlled by the X-axis servo motor connected to the X-axis lead screw, so that the slide 105 moves up and down. The saddle 103 drives the Y-axis turret 106 to turn the workpiece.

[0036] The workpiece is clamped by the chuck 102, the main motor drives the automatic three-speed gearbox through a belt, the automatic three-speed gearbox drives the spindle on the spindle box 101 through a belt, the power tool holder on the Y-axis turret 106 clamps the milling cutter, and after the motor is started, the milling cutter rotates to generate cutting force, and the cutter disc of the Y-axis turret 106 can move up and down for milling.

[0037] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An automatic three-speed gearbox, comprising a housing (1), characterized in that: An input shaft (21) and an output shaft (41) are arranged in the housing (1); a transmission shaft (37) and an induction shaft (5) are arranged on both sides of the input shaft (21); an input shaft gear (22) and a sixth gear (36) are arranged on the input shaft (21); the input shaft gear (22) is connected to the transmission shaft (37) via a first gear (31); the first gear (31) is arranged on the transmission shaft (37); a fourth gear (34) and a fifth gear (35) are movably arranged on the output shaft (41); the fourth gear (3 4) can be connected to the sixth gear (36), the transmission shaft (37) is provided with a second gear (32) and a third gear (33), the second gear (32) can be connected to the fourth gear (34), the third gear (33) can be connected to the fifth gear (35), the transmission shaft (37) and the induction shaft (5) are arranged in the housing (1), a movable shift fork (51) is installed on the induction shaft (5), and one end of the shift fork (51) is arranged between the fourth gear (34) and the fifth gear (35).

2. The automatic three-speed gearbox according to claim 1, characterized in that: The sensing shaft (5) is provided with a plurality of recesses (52), and the shift fork (51) can move back and forth along the length direction of the sensing shaft (5) and can be inserted into each recess (52) for fixation.

3. The automatic three-speed gearbox according to claim 2, characterized in that: The induction shaft (5) is provided with an induction head (53).

4. The automatic three-speed gearbox according to claim 1, characterized in that: A rotatable screw rod (6) is provided between the output shaft (41) and the induction shaft (5), a convex block (61) is provided on the screw rod (6), and the convex block (61) is fixedly connected to the shift fork (51) via a bolt.

5. The automatic three-speed gearbox according to claim 4, characterized in that: The screw rod (6) is connected to the gear shifting motor.

6. The automatic three-speed gearbox according to claim 1, characterized in that: The fourth gear (34) is provided with external teeth (341) and internal teeth (342); the external teeth (341) are meshingly connected with the second gear (32); and the internal teeth (342) are meshingly connected with the sixth gear (36).

7. The automatic three-speed gearbox according to claim 6, characterized in that: The shift fork (51) can move toward the direction of the fifth gear (35) so that the fifth gear (35) is meshed and connected with the third gear (33); the shift fork (51) can move toward the direction of the fourth gear (34) so ​​that the fourth gear (34) is meshed and connected with the sixth gear (36) or with the second gear (32).

8. The automatic three-speed gearbox according to claim 1, characterized in that: The second gear (32) is arranged in the middle of the transmission shaft (37), and the first gear (31) and the third gear (33) are respectively fixedly arranged at two ends of the transmission shaft (37).

9. A turning and milling compound CNC machine tool, characterized in that: An automatic three-speed transmission comprising the one of claims 1 to 8.

10. The turning-milling compound CNC machine tool according to claim 9, characterized in that: The machine body also comprises a machine body base (100), on which a main motor and a spindle box (101) are fixedly arranged, the main motor is arranged on one side of the automatic three-speed gearbox, the spindle box (101) is connected to a chuck (102), and the machine body base (100) is also provided with a movable saddle (103) and a tailstock (104), the saddle (103) is movably provided with a slide plate (105), and the slide plate (105) is provided with a Y-axis turret (106).

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