CN218992248U

CN218992248U - Novel numerical control milling machine gear speed change device

Info

Publication number: CN218992248U
Application number: CN202223498788.2U
Authority: CN
Inventors: 蔡大友; 王宜亮; 闫新威
Original assignee: Jiangsu Joyou Cnc Equipment Co ltd
Current assignee: Jiangsu Joyou Cnc Equipment Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-05-09
Anticipated expiration: 2032-12-26

Abstract

The utility model relates to a novel gear speed change device of a numerical control milling machine, which belongs to the technical field of a transmission device of the numerical control milling machine, wherein a left main shaft, a coarse main shaft and a lower main shaft are changed in speed through bevel gears at all levels, the coarse main shaft is changed in speed through gears to obtain 3600 revolutions per minute, different rotational speeds at different levels can be generated, the speed regulation range is wide, the novel gear speed change device is suitable for low-speed heavy-duty rough machining and high-speed finish machining, three output power shafts in three directions can be used, and the special lubricating oil for a gearbox is added into a base shell, so that the service lives of gears and bearings are prolonged, the production process is convenient, the assembly is convenient, the service life exceeds the design life of the milling machine, and meanwhile, the impact and vibration caused by the starting and stopping of the milling machine are also lightened; the speed change mode in the gearbox adopts a combination of change gears, adopts mechanical stepless speed change, and adopts a direct current motor or a variable speed alternating current motor to transmit power for driving.

Description

Novel numerical control milling machine gear speed change device

Technical Field

The utility model relates to a novel gear speed change device of a numerical control milling machine, and belongs to the technical field of numerical control milling machine transmission devices.

Background

The numerical control milling machine is a numerical control machine tool with very strong processing function, and a rapidly developed processing center, a flexible processing unit and the like are generated on the basis of the numerical control milling machine and the numerical control boring machine, and the two are not separated from a milling mode. Because the numerical control milling process is the most complex and the most technical problems to be solved, people always focus on milling when researching and developing numerical control systems and automatic programming language software.

Along with the rapid development of social production and scientific technology, mechanical products are increasingly precise and complex, and frequent modification is required, and particularly mechanical parts required in the fields of aerospace, shipbuilding, military and the like have high precision requirements, complex shapes and small batches. The processing of such products requires frequent modification or adjustment of the equipment, and conventional machine tools or highly specialized automated machine tools have not been able to accommodate these requirements. In order to solve the problems, a novel machine tool, namely a numerical control machine tool, has been developed. The novel machine tool has the advantages of strong adaptability, high machining precision, stable machining quality, high production efficiency and the like. The numerical control machine tool comprehensively uses various technical achievements such as an electronic computer, automatic control, servo drive, precise measurement, novel mechanical structure and the like, and is a development direction of the numerical control machine tool in the future.

Numerical control milling machines are divided into two main types, namely a tool magazine without a tool magazine and a tool magazine with a tool magazine. The numerical control milling machine with the tool magazine is also called a machining center. The development of scientific technology and the rising and continuous maturation of world advanced manufacturing technology have put higher demands on numerical control processing technology; the application of the technologies such as ultra-high-speed cutting, ultra-precise machining and the like provides higher performance indexes for a numerical control system, servo performance, spindle drive, machine tool structure and the like of a numerical control machine tool; the rapid development of FMS and the continuous maturation of CIMS will also put higher demands on the technologies such as reliability, communication function, artificial intelligence and adaptive control of the numerical control machine. With the development of microelectronics and computer technology, the performance of the numerical control system is perfected day by day, and the application field of the numerical control technology is expanding day by day.

The numerical control milling machine consists of 6 main parts, namely a machine body part, a milling head part, a workbench part, an infeed part, a lifting table part and a cooling and lubricating part. The internal layout of the lathe bed is reasonable, has good rigidity, is equipped with 4 adjusting bolts on the base, and the lathe is convenient for carry out the horizontal adjustment, and stock solution ragged of cutting fluid is established in the lathe bed inside.

The speed changing mechanism for machine tool includes one main speed changing mechanism, such as spindle speed, reciprocating stroke number of the bench, etc. and may be installed separately or together with other mechanism to constitute one part of the machine tool.

The Chinese patent discloses a main driving device of a vertical milling machine, which has the specific structure described as follows: the device comprises a main motor, a transmission case, an elastic coupling and an oil pool; a transmission one-shaft cycloid pump, wherein a shaft gear is arranged on the transmission one-shaft; a transmission two-shaft, a two-shaft gear and a triple gear; a transmission triaxial and a speed change gear; a transmission four-axis, a duplex gear and a speed change gear; five-axis transmission, speed-changing gear and bevel gear; one end of the vertical shaft is provided with a bevel gear, and the other end of the vertical shaft is provided with a bevel gear; one side of the vertical shaft is provided with a main shaft, and the outer side of the main shaft is provided with a spline housing and a bevel gear. The utility model has the advantages that: according to the utility model, the main shaft obtains 12-level rotating speed within the range of 35-1500rpm through the 3x2x2 structural formula, and the speed regulation range is wide; the main shaft is connected with the spline housing through a spline, and can move up and down axially in the spline housing; the cycloid pump is arranged at one end of the transmission shaft, and the lubricating oil of the oil pool in the transmission box is sent to each lubricating point of the gear and the bearing through an oil way by means of the power of the transmission shaft, so that the lubricating effect is good.

The main transmission device of the vertical milling machine has the defects that the speed regulation range is narrow, the gear speed change devices generate a plurality of types of gear speed change devices due to different rotating speeds so as to meet the requirements of milling machines of different types, and the production management difficulty is high and the mixing is easy. The axial direction of the main shaft of the milling machine cannot realize axial feeding according to the design requirement after mixing, so that the milling machine has a small processing range, and the internal gear speed change device has poor lubrication effect, so that the gear is quickly worn, and the service life of the milling machine is influenced.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model aims to provide a novel gear speed changing device for a numerical control milling machine, which is characterized in that a left main shaft, a rough main shaft and a lower main shaft are subjected to gear speed changing, the speed adjusting range is wide, the gear speed changing device is suitable for low-speed heavy-load rough machining and high-speed finish machining, three output power shafts in three directions can be used, lubricating oil is added into a base shell, the service lives of gears and bearings are prolonged, the production process is convenient, the assembly is convenient, and the service life exceeds the design life of the milling machine.

In order to achieve the above purpose, the utility model provides the following technical scheme

The novel gear speed change device of the numerically controlled milling machine comprises a base shell 2, wherein the interior of the base shell 2 is divided into a first area 201, a second area 202, a third area 203, a fourth area 204, a fifth area 205 and a sixth area 206 by a first partition wall 207, a second partition wall 208, a third partition wall 209, a fourth partition wall 210 and a fifth partition wall 211; the method is characterized in that: a coarse spindle 4 is slidably arranged in the first region 201 through a bearing ring I5, a bevel gear I6 is fixed at the lower end of the coarse spindle 4 through an internal spline, the bevel gear I6 is in meshed transmission with a bevel gear II 25 on the right side, a central shaft 24 is fixed in an inner hole of the bevel gear II 25, the central shaft 24 downwards passes through a third region 203, a worm wheel 23 is fixed at the central position of the central shaft 24 in the third region 203, the lower end of the central shaft 24 is fixed in an inner hole of a middle small gear in the small planetary gear ring 16, the small planetary gear ring 16 is positioned in a fourth region 204, the worm wheel 23 is in meshed transmission with a worm 7 below, the right end of the worm 7 is provided with a bevel gear V22 through an internal spline, the bevel gear V22 is in meshed transmission with a bevel gear V21, the bevel gear V21 is fixed at the left side position of the bevel gear 19 through an internal spline, the bevel gear shaft 19 is in meshed transmission with the small bevel gear 18, the bevel gear V22, the bevel gear V21, the bevel gear V19 and the small bevel gear 18 are positioned in a sixth region 206, the small bevel gear 18 is fixed at the right end part of the transverse 17, the left end of the transverse shaft 17 is fixed with a bevel gear I11 through an internal spline, the bevel gear V11 is fixed at the bevel gear V11, the bevel gear V11 is fixed at the left end of the bevel shaft 8 and the right end of the bevel shaft 8 is meshed with the third bevel gear I8; the left pinion and the right pinion in the pinion gear ring 16 are respectively and fixedly connected with the inner holes of the left pinion and the right pinion in the large planetary gear ring 14 through connecting rods 15, the middle pinion in the large planetary gear ring 14 is fixedly provided with a lower main shaft 12, and the large planetary gear ring 14 is positioned in a fifth area 205.

Four groups of side positioning lugs 3 are symmetrically welded at the bottom of the base shell 2, and through holes are formed in the side positioning lugs 3.

The top of the base shell 2 is provided with an upper top cover 1 through four-corner screws.

The base shell 2 and the upper top cover 1 are made of steel plates with the thickness of 10mm, and silver gray paint is sprayed on the surfaces of the base shell and the upper top cover.

The base shell 2 is filled with GL-4 gearbox special lubricating oil with the height of 2/3 of the depth of the inner cavity.

The left end of the left main shaft 9 is slidably provided with a second bearing ring 10.

The right end of the right main shaft 19 is slidably provided with a bearing ring five 20.

The head of the lower main shaft 12 is slidably provided with a bearing ring III 13.

The utility model has the beneficial effects that

The left main shaft 9, the coarse main shaft 4 and the lower main shaft 12 are subjected to speed change through helical gears at all levels, the coarse main shaft 4 is subjected to gear speed change to obtain 3600 revolutions per minute, 16 levels of different rotational speeds can be generated, the speed regulating range is wide, the speed regulating device is suitable for low-speed heavy-load rough machining and high-speed finish machining, the speed regulating device is uniformly designed into a gear speed changing device, three output power shafts in three directions can be used, special lubricating oil for a gearbox is added into a base shell, the service lives of gears and bearings are prolonged, the production process is convenient, the assembly is convenient, the service life exceeds the design life of a milling machine, and meanwhile, the impact and vibration caused by the milling machine during starting and stopping are also lightened.

Drawings

Fig. 1 is a front view of the present utility model.

Fig. 2 is a bottom view of the present utility model.

Fig. 3 is a partially exploded view of fig. 1.

Fig. 4 is a partially exploded view of fig. 1.

Fig. 5 is a perspective view of fig. 4.

Fig. 6 is a second perspective view of fig. 4.

In the figure: the upper top cover 1, the base housing 2, the first region 201, the second region 202, the third region 203, the fourth region 204, the fifth region 205, the sixth region 206, the first partition 207, the second partition 208, the third partition 209, the fourth partition 210, the fifth partition 211, the side positioning lug 3, the rough main shaft 4, the bearing ring one 5, the bevel gear one 6, the worm 7, the bevel gear two 8, the left main shaft 9, the bearing ring two 10, the bevel gear three 11, the lower main shaft 12, the bearing ring three 13, the large planetary gear ring 14, the connecting rod 15, the small planetary gear ring 16, the transverse slender shaft 17, the bearing ring four 18, the right main shaft 19, the bearing ring five 20, the bevel gear four 21, the bevel gear five 22, the worm wheel 23, the center shaft 24 and the bevel gear six 25.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

1-6, a novel gear speed change device of a numerically controlled milling machine comprises a base shell 2, wherein the interior of the base shell 2 is divided into a first area 201, a second area 202, a third area 203, a fourth area 204, a fifth area 205 and a sixth area 206 by a first partition wall 207, a second partition wall 208, a third partition wall 209, a fourth partition wall 210 and a fifth partition wall 211; a coarse spindle 4 is slidably arranged in the first region 201 through a bearing ring I5, a bevel gear I6 is fixed at the lower end of the coarse spindle 4 through an internal spline, the bevel gear I6 is meshed with a bevel gear II 25 at the right side for transmission, a central shaft 24 is fixed in an inner hole of the bevel gear II 25, the central shaft 24 downwards passes through a third region 203, a worm wheel 23 is fixed in the central position of the central shaft 24 in the third region 203, the lower end of the central shaft 24 is fixed in an inner hole of a middle pinion in the pinion gear ring 16, the pinion gear ring 16 is positioned in a fourth region 204, the worm wheel 23 is meshed with a worm 7 below for transmission, a bevel gear V22 is fixed at the right end of the worm 7 through an internal spline, the bevel gear V22 is meshed with the bevel gear V21 for transmission, the bevel gear IV 21 is fixed at the left side of the bevel gear shaft 19 through an internal spline, the bevel gear shaft 19 is meshed with the bevel pinion 18 for transmission, the right end of the right main shaft 19 is slidably provided with a bearing ring IV 20, the bevel gear V22, the bevel gear IV 21, the bevel gear shaft 19 and the bevel pinion 18 are positioned in a sixth area 206, the bevel pinion 18 is fixed at the right end head of the transverse and slender shaft 17, the left end of the transverse and slender shaft 17 is fixedly provided with a bevel gear III 11 through an internal spline, the bevel gear III 11 is meshed with a bevel gear II 8 for transmission, the bevel gear III 11 and the bevel gear II 8 are positioned in a second area 202, the bevel gear II 8 is fixed at the right end head of the left main shaft 9, and the left end of the left main shaft 9 is slidably provided with a bearing ring II 10; the left pinion and the right pinion in the pinion gear ring 16 are respectively and fixedly connected with the inner holes of the left pinion and the right pinion in the large planetary gear ring 14 through connecting rods 15, the middle pinion in the large planetary gear ring 14 is fixedly provided with a lower main shaft 12, the head of the lower main shaft 12 is slidably provided with a bearing ring III 13, and the large planetary gear ring 14 is positioned in a fifth area 205.

Four groups of side positioning lugs 3 are symmetrically welded at the bottom of the base shell 2, through holes are formed in the side positioning lugs 3, an upper top cover 1 is arranged at the top of the base shell 2 through four corner screws, the base shell 2 and the upper top cover 1 are made of steel plates with the thickness of 10mm, silver gray paint is sprayed on the surfaces of the base shell 2, and GL-4 gearbox special lubricating oil exceeding the depth of 2/3 of the inner cavity is filled in the base shell 2.

The speed change mode of the speed change device adopts a combination of change gears, adopts mechanical stepless speed change, and uses a direct current motor or a variable speed alternating current motor to transmit power for driving.

The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The novel gear speed change device of the numerical control milling machine comprises a base shell (2), wherein the interior of the base shell (2) is divided into a first area (201), a second area (202), a third area (203), a fourth area (204), a fifth area (205) and a sixth area (206) by a first partition wall (207), a second partition wall (208), a third partition wall (209), a fourth partition wall (210) and a fifth partition wall (211); the method is characterized in that: a coarse spindle (4) is slidably arranged in the first region (201) through a bearing ring I (5), a bevel gear I (6) is fixed at the lower end of the coarse spindle (4) through an internal spline, the bevel gear I (6) is meshed with a bevel gear II (25) on the right side, a central shaft (24) is fixed in an inner hole of the bevel gear II (25), the central shaft (24) downwards passes through a third region (203), a worm wheel (23) is fixed at the central position of the central shaft (24) in the third region (203), the lower end of the central shaft (24) is fixed in an inner middle pinion inner hole of a small planetary gear ring (16), the small planetary gear ring (16) is positioned in a fourth region (204), the worm wheel (23) is meshed with a worm (7) below, a bevel gear V (22) is fixed at the right end of the worm (7) through an internal spline, the bevel gear V (22) is meshed with a bevel gear V (21), the right spindle (19) is meshed with a bevel gear V (21) through an internal spline, the bevel gear V (21) is fixed at the left side position of a right spindle (19), the right spindle (19) is meshed with a bevel gear (18), the bevel gear V (22), the bevel gear V (21) and the bevel gear V (19) is fixed at the right spindle (18) and the right spindle (18) is fixed at the right spindle (18), the left end of the transverse and slender shaft (17) is fixedly provided with a third helical gear (11) through an internal spline, the third helical gear (11) is meshed with a second helical gear (8) for transmission, the third helical gear (11) and the second helical gear (8) are positioned in a second area (202), and the second helical gear (8) is fixed at the right end head part of the left main shaft (9); the left pinion and the right pinion in the pinion gear ring (16) are respectively and fixedly connected with the inner holes of the left pinion and the right pinion in the large planetary gear ring (14) through connecting rods (15), the middle pinion in the large planetary gear ring (14) is fixedly provided with a lower main shaft (12), and the large planetary gear ring (14) is positioned in a fifth zone (205).

2. The novel numerical control milling machine gear speed changing device according to claim 1 is characterized in that: four groups of side positioning lugs (3) are symmetrically welded at the bottom of the base shell (2), and through holes are formed in the side positioning lugs (3).

3. The novel numerical control milling machine gear speed changing device according to claim 2 is characterized in that: the top of the base shell (2) is provided with an upper top cover (1) through four-corner screws.

4. A novel numerically controlled fraise machine gear change device according to claim 3, wherein: the base shell (2) and the upper top cover (1) are made of steel plates with the thickness of 10mm, and silver gray paint is sprayed on the surfaces of the base shell and the upper top cover.

5. The novel numerical control milling machine gear speed changing device according to claim 4 is characterized in that: the base shell (2) is filled with GL-4 gearbox special lubricating oil with the height of 2/3 of the depth of the inner cavity.

6. The novel numerical control milling machine gear speed changing device according to claim 1 is characterized in that: the left end of the left main shaft (9) is provided with a bearing ring II (10) in a sliding way.

7. The novel numerical control milling machine gear speed changing device according to claim 1 is characterized in that: the right end of the right main shaft (19) is slidably provided with a bearing ring five (20).

8. The novel numerical control milling machine gear speed changing device according to claim 1 is characterized in that: the head of the lower main shaft (12) is slidably provided with a bearing ring III (13).