Rotary table

Abstract

The utility model discloses a rotating table which comprises a box body, a main shaft is horizontally arranged in the box body, and a disc face with a front cover and a rear cover are arranged at the front end and the rear end of the main shaft respectively. A transmission worm is arranged at the position, located at the lower end of the box body, in the box body, the transmission worm is connected with a motor arranged on one side of the box body, a roller meshed with the transmission worm is annularly arranged on the main shaft, and an encircling type brake mechanism is arranged at the rear end of the main shaft and located in the box body. An oil mechanism used for pushing the surrounding type brake mechanism to hold tightly is arranged in the rear cover. The rotary table has the advantages of being ingenious in structural design and reliable in use, can bear machining of large cutting output on parts, reduces damage to the rotary table, improves work efficiency, and shortens work time. And meanwhile, on the premise that the parts are machined in a large cutting amount, the displacement phenomenon cannot occur, and the product quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to a mechanical processing device, in particular to a rotary worktable. Background Art

[0002] At present, the rotary table is one of the main accessories of milling machines, boring machines, machining centers and other machine tools. It is responsible for clamping the workpieces to be processed and can effectively cooperate with the multi-axis processing of the workpieces. The existing rotary table has the following shortcomings: 1. Short service life: Because it uses a worm gear structure to drive it to rotate, and the worm gear and worm gear are made of different materials, it is easy to cause greater wear during work, which greatly shortens its service life. 2. Large tolerances appear: Due to the large wear, a large gap appears between the worm gear and the worm gear. Once the gap is large, a large tolerance will inevitably appear.

[0003] In order to solve the above problems, an invention patent application named "rotating table device" is disclosed in CN105834766A, which discloses that cam followers are arranged at specified intervals on the outer peripheral surface of the rotary table, and as the gear-driven cam rotates by means of the rotation of the driven shaft, the rotary table rotates by means of the cam follower meshing with the gear-driven cam. The rotary table device is characterized in that the roller gear and the gear-driven cam as cam followers have a trapezoidal cross-section, and the roller gear and the gear-driven cam have inclined surfaces respectively. The cam follower is arranged on the rotary table in a manner supported by a bearing and capable of rotation, and a pitch adjustment component for adjusting the pitch of the rotary table is arranged between the rotary table and the roller gear. Although the patent solves the existence of the above problems, the existing rotary table still has the problem of small cutting amount of processed parts.

[0004] The rotary table clamps the parts by relying on the brake system. The existing rotary table basically adopts butterfly brake device for clamping. Due to the limitation of butterfly brake structure, when the cutting amount of parts is large, it will produce large vibration. This vibration force will be fed back to the butterfly brake device, which will not only damage the butterfly brake device, but also cause the parts on the rotary table to shift, resulting in defective or scrapped parts. Utility Model Content

[0005] The purpose of the utility model is to provide a rotary worktable which can enable parts to have a larger cutting amount.

[0006] The purpose of the utility model is achieved through such a technical solution. A rotary worktable includes a box body, in which a main shaft is horizontally arranged, and a disk with a front cover and a rear cover are respectively arranged at the front and rear ends of the main shaft; a transmission worm is arranged in the box body and at the lower end of the box body 1, and the transmission worm is connected to a motor arranged on one side of the box body, and a roller meshing with the transmission worm is circumferentially arranged on the main shaft, and an embracing brake mechanism is arranged at the rear end of the main shaft, and the embracing brake mechanism is located in the box body; an oil mechanism for pushing the embracing brake mechanism to clamp is arranged in the rear cover.

[0007] Wherein, the embracing brake mechanism comprises a brake shaft sleeved on the main shaft and located on one side of the roller, and a brake ring is sleeved on the outer periphery of the brake shaft; the oil mechanism is in communication with the outer wall of the brake ring.

[0008] Wherein, the oil mechanism comprises an oil inlet arranged on the rear cover, an oil channel connected to the oil inlet is arranged inside the rear cover, and the oil channel is connected to the outer wall of the brake ring.

[0009] In the utility model, a radial and axial roller bearing is arranged on the main shaft and located at the rear side of the front cover; a rolling bearing is arranged on the main shaft and located at the rear end of the main shaft, and the rolling bearing is located in the rear cover and connected to the rear cover.

[0010] Due to the adoption of the above technical scheme, the utility model has the advantages of clever structural design and reliable use. It can withstand large-volume cutting processing of parts, reduces damage to the rotary worktable, and improves work efficiency and time; at the same time, the parts will not be displaced under the premise of large-volume cutting processing, thereby ensuring the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings of the present utility model are as follows:

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 A disassembled diagram of the utility model;

[0014] Figure 3 It is a cross-sectional view of the utility model. DETAILED DESCRIPTION

[0015] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings, but the present invention is not limited to these implementation modes, and any improvement or substitution based on the basic spirit of the present embodiment still falls within the scope of protection required by the claims of the present invention.

[0016] Example 1: Figure 1, 2 As shown in Figure 3, a rotary worktable comprises a box body 1, in which a main shaft 2 is horizontally arranged, and a disk 4 with a front cover 3 and a rear cover 5 are respectively arranged at the front and rear ends of the main shaft 2; a transmission worm 6 is arranged in the box body 1 and at the lower end of the box body 1, and the transmission worm 6 is connected to a motor 7 arranged on one side of the box body 1, and a roller 8 meshing with the transmission worm 6 is circumferentially arranged on the main shaft 2, and an embracing brake mechanism is arranged at the rear end of the main shaft 2, and the embracing brake mechanism is located in the box body 1; an oil mechanism for pushing the embracing brake mechanism to clamp is arranged in the rear cover 5.

[0017] The embracing brake mechanism comprises a brake shaft 9 which is sleeved on the main shaft 2 and located on one side of the roller 8 , and a brake ring 10 is sleeved on the outer periphery of the brake shaft 9 ; the oil mechanism is in communication with the outer wall of the brake ring 10 .

[0018] To further describe, the oil mechanism includes an oil inlet 11 disposed on the rear cover 5 , an oil passage 12 communicating with the oil inlet 11 is disposed inside the rear cover 5 , and the oil passage 12 is communicated with the outer wall of the brake ring 10 .

[0019] In the present invention, a radial and axial roller bearing 13 is arranged on the main shaft 2 and located at the rear side of the front cover 3; a rolling bearing 14 is arranged on the main shaft 2 and located at the rear end of the main shaft 2, and the rolling bearing 14 is located in the rear cover 5 and connected to the rear cover 5. This can ensure that after the main shaft is subjected to force, the parts and the main shaft are always on the same axis, and at the same time, the main shaft can have a larger bearing capacity.

[0020] The utility model works as follows: the rotary table is installed on the processing table of the machine tool; the parts to be processed are inserted into the main shaft and clamped by the disk surface 4; the driving worm 6 is driven to rotate by the operation of the motor 7, thereby driving the roller 8 to rotate, so that the main shaft 2 can drive the parts to rotate, thereby achieving the purpose of adjusting the angle. When the main shaft 2 drives the parts to rotate to the processing angle, the external oil pressure system supplies hydraulic oil to the oil channel 12 through the oil inlet 11, and the hydraulic oil enters the outer wall of the brake ring 10 through the oil channel 12. Under the action of the oil pressure, the brake ring 10 is deformed, and then the brake shaft 9 is pushed to hold the main shaft 2. Because the brake ring and the brake shaft have structural stability, this can withstand the vibration of the parts under the condition of large cutting volume, prevent damage to the embracing brake mechanism, increase the service life, shorten the processing time, and improve work efficiency.

Claims

1. A rotary table, comprising a housing (1), a main shaft (2) being horizontally arranged in the housing (1), a disk (4) with a front cover (3) and a rear cover (5) being arranged at the front and rear ends of the main shaft (2), respectively; a transmission worm (6) being arranged in the housing (1) and at the lower end of the housing (1), the transmission worm (6) being connected to a motor (7) arranged on one side of the housing (1), a roller (8) being circumferentially arranged on the main shaft (2) and meshing with the transmission worm (6), wherein: An embracing brake mechanism is arranged at the rear end of the main shaft (2), and the embracing brake mechanism is located in the box body (1); an oil mechanism for pushing the embracing brake mechanism to engage is arranged in the rear cover (5).

2. The rotary table according to claim 1, characterized in that: The encircling brake mechanism comprises a brake shaft (9) sleeved on the main shaft (2) and located on one side of the roller (8), and a brake ring (10) is sleeved on the outer periphery of the brake shaft (9); the oil mechanism is in communication with the outer wall of the brake ring (10).

3. The rotary table according to claim 2, characterized in that: The oil mechanism comprises an oil inlet (11) arranged on the rear cover (5), an oil passage (12) communicating with the oil inlet (11) is arranged inside the rear cover (5), and the oil passage (12) is connected to the outer wall of the brake ring (10).

4. The rotary table according to claim 1 or 2, characterized in that: A radial and axial roller bearings (13) are arranged on the main shaft (2) and located on the rear side of the front cover (3).

5. The rotary table according to claim 4, characterized in that: A rolling bearing (14) is provided on the main shaft (2) and at the rear end of the main shaft (2); the rolling bearing (14) is located inside the rear cover (5) and is connected to the rear cover (5).

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