CNC horizontal rotary table

Abstract

The utility model relates to the technical field of numerical control rotary tables, and discloses a CNC (computer numerical control) horizontal rotary table which comprises a housing, a transmission mechanism for driving a workpiece to rotate is mounted in the housing, and a driving mechanism for driving the transmission mechanism to rotate is mounted on one side of the housing; the driving mechanism comprises a motor, a worm is rotatably mounted in the housing, a worm gear meshed with the worm is further rotatably mounted in the housing, and by means of the design of the driving mechanism comprising the worm gear and the worm, the rotary table has a large transmission ratio range and can well adapt to a high-load working state, the worm gear and the worm are meshed with each other in a high-precision mode, and the working efficiency of the rotary table is improved. The worm and gear transmission mechanism is simple in structure, free of reverse clearance and high in transmission precision, impact and vibration in gear transmission are reduced through stable transmission of the worm gear and the worm, and noise generated during equipment operation is reduced. The driving mechanism and the transmission mechanism are mounted in a sleeving and embedding manner, so that the structure of the equipment is compact, the occupied space is reduced, and the production cost and the maintenance difficulty are further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control turntables, in particular to a CNC horizontal turntable. Background Art

[0002] A CNC rotary table is a type of worktable that automatically indexes and positions itself according to the control system's instructions. CNC horizontal rotary tables are primarily used to carry and rotate workpieces, enabling precise machining of different parts during the machining process. Controlled by a CNC system, the table can achieve precise rotation angles and speeds.

[0003] After searching, the patent with application number CN201921929495.0 discloses an electric-controlled turntable for CNC machine tools, including a machine base, a turntable fixture, a rotating assembly, and an electric-controlled transmission assembly. The turntable fixture includes no less than three clamping jaws, and the rotating assembly includes a rotating shaft, a positioning pad, a base, a support platform, and a positioning seat. The upper end of the rotating shaft cooperates with the slot set in the center hole of the turntable fixture, and the circular shaft portion in the middle is also sleeved with the positioning pad, base, and support platform. The shaft head at the lower end is also connected to the positioning seat. The electric-controlled transmission assembly includes a worm gear, a worm arranged symmetrically on the center, a transmission motor, and a worm bracket. The electric-controlled turntable for the CNC machine tool adopts a turntable fixture to position and clamp the part to be processed, and driven by the worm gear mechanism arranged symmetrically on both sides set inside the electric-controlled turntable, the angle of the turntable fixture is fine-tuned to facilitate the rotation of the part to be processed along the center. It does not require CNC machining to write too many stepping programs, reduces the number of tool passes and tool pass time, and speeds up the production efficiency of CNC machining.

[0004] The current CNC horizontal turntable has a small transmission ratio range and cannot adapt well to high-load working conditions. In addition, its structure is relatively scattered and occupies a large space, which increases the production cost and maintenance difficulty of the equipment. Therefore, we need to propose a CNC horizontal turntable. Utility Model Content

[0005] The purpose of the present utility model is to provide a CNC horizontal turntable. By designing a drive mechanism including a worm gear, the turntable has a larger transmission ratio range and can well adapt to high-load working conditions. The worm gear has high-precision meshing, no backlash, and high transmission accuracy. The smooth transmission of the worm gear reduces the impact and vibration in the gear transmission, thereby reducing the noise during equipment operation. By adopting a socket-engaged installation method for the drive mechanism and the transmission mechanism, the structure of the equipment is compact, the occupied space is reduced, and the production cost and maintenance difficulty are reduced, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a CNC horizontal turntable, comprising a cover, a transmission mechanism for driving a workpiece to rotate installed inside the cover, a drive mechanism for driving the transmission mechanism to rotate installed on one side of the cover, and an oil supply mechanism for supplying oil for the machining process installed on the transmission mechanism;

[0007] The driving mechanism includes a motor, a first gear is sleeved on one end of the output shaft of the motor, a worm is rotatably installed inside the cover shell, a second gear is sleeved on the outer wall of one end of the worm, the first gear is meshed with the second gear, and a worm wheel meshed with the worm is also rotatably installed inside the cover shell, the transmission mechanism is inserted into the inner ring of the worm wheel, and a turntable located on one side of the cover shell is fixed to one end of the transmission mechanism.

[0008] Preferably, a mounting hole is provided on the cover shell, and the worm gear and the transmission mechanism are both rotatably mounted inside the mounting hole.

[0009] Preferably, a groove for accommodating the first gear and the second gear is formed at one end of the cover shell, a through hole communicating with the mounting hole is formed on the inner wall of the groove, and the worm is rotatably mounted inside the through hole.

[0010] Preferably, the transmission mechanism includes a first positioning ring and a second positioning ring fixed by bolts, a third ring is fixedly sleeved on the outer wall of one end of the second positioning ring, and one end of the third ring is inserted into the inner ring of the worm gear.

[0011] Preferably, the transmission mechanism also includes a sleeve that passes through the first positioning ring and the second positioning ring and is inserted into the inner ring of the third ring. The outer wall of one end of the sleeve is sleeved with the second ring, and the outer wall of the second ring is sleeved with the first ring. The first ring and the first positioning ring are connected by bolts.

[0012] Preferably, a side of the worm wheel is connected to a fixing cover via bolts, a third positioning ring is installed inside the fixing cover, and the third positioning ring is connected to one end of the sleeve.

[0013] Preferably, one side of the cover shell is respectively connected with a clamping block and a mounting seat for mounting the cover shell.

[0014] Preferably, the oil supply mechanism includes an oil supply cylinder rotatably mounted inside the sleeve, a plurality of oil pipes mounted on the first sleeve ring, and an oil circuit block mounted on the cover, wherein the oil pipes are connected between the oil supply cylinder and the oil circuit block.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The utility model adopts the design of a drive mechanism including a worm gear, so that the turntable has a large transmission ratio range and can well adapt to high-load working conditions. The high-precision meshing of the worm gear has no backlash and has high transmission accuracy. The smooth transmission of the worm gear reduces the impact and vibration in the gear transmission, thereby reducing the noise during equipment operation.

[0017] 2. The utility model adopts a sleeve-jointed installation method for the drive mechanism and the transmission mechanism, which makes the structure of the equipment compact, reduces the occupied space, and thus reduces the production cost and maintenance difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the drive mechanism and transmission mechanism of the utility model;

[0020] Figure 3 This is a schematic diagram of the front structure of the cover of the utility model;

[0021] Figure 4 This is a schematic diagram of the back structure of the cover of the utility model;

[0022] Figure 5 It is an exploded view of the driving mechanism and transmission mechanism of the utility model.

[0023] In the figure: 1. cover; 11. clamping block; 12. mounting seat; 13. mounting hole; 14. groove; 15. through hole; 2. driving mechanism; 21. support frame; 22. motor; 23. first gear; 24. second gear; 25. worm; 26. worm wheel; 3. transmission mechanism; 31. first sleeve; 32. second sleeve; 33. sleeve; 34. first positioning ring; 35. second positioning ring; 36. third sleeve; 37. third positioning ring; 38. fixing cover; 4. turntable; 5. oil pipe; 6. oil supply cylinder; 7. oil block. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-5The utility model provides a technical solution: a CNC horizontal turntable, including a cover 1, a transmission mechanism 3 for driving the workpiece to rotate is installed inside the cover 1, a drive mechanism 2 for driving the transmission mechanism 3 to rotate is installed on one side of the cover 1, and an oil supply mechanism for supplying oil for the processing process is installed on the transmission mechanism 3; the drive mechanism 2 mainly adopts worm gear rotation, with a large transmission ratio range, usually can reach 1:50 to 1:200, this large-ratio transmission structure can adapt to high-load working conditions.

[0026] The oil supply mechanism includes an oil supply cylinder 6 rotatably mounted inside the sleeve 33 , a plurality of oil pipes 5 mounted on the first collar 31 , and an oil passage block 7 mounted on the cover 1 . The oil pipes 5 are connected between the oil supply cylinder 6 and the oil passage block 7 .

[0027] The driving mechanism 2 includes a motor 22, which is configured as a servo motor. A first gear 23 is sleeved on one end of the output shaft of the motor 22. A worm 25 is rotatably installed inside the cover 1, and a second gear 24 is sleeved on the outer wall of one end of the worm 25. The diameter of the first gear 23 is smaller than the diameter of the second gear 24. The first gear 23 is meshed with the second gear 24. A worm wheel 26 meshing with the worm 25 is also rotatably installed inside the cover 1. The transmission mechanism 3 is inserted into the inner ring of the worm wheel 26. A turntable 4 located on one side of the cover 1 is fixed to one end of the transmission mechanism 3.

[0028] A support frame 21 is mounted on the housing 1 , and a motor 22 is fixed on the support frame 21 .

[0029] When using this device to process a workpiece, the workpiece is first mounted on the turntable 4, and then the turntable 4 is driven to rotate by the driving mechanism 2 and the transmission mechanism 3. Specifically:

[0030] The motor 22 drives the first gear 23 to rotate, the first gear 23 drives the worm 25 to rotate through the second gear 24, the worm 25 drives the worm wheel 26 to rotate, the worm wheel 26 drives the transmission mechanism 3 to rotate, and then drives the turntable 4 installed on the transmission mechanism 3 to rotate, thereby realizing the rotation of the workpiece to be processed.

[0031] The housing 1 is provided with a mounting hole 13, and the worm gear 26 and the transmission mechanism 3 are both rotatably mounted inside the mounting hole 13. The transmission mechanism 3 has a compact structure, and the components in the transmission mechanism 3 are connected by a sleeve-fixed manner, which saves space and reduces equipment costs.

[0032] A groove 14 for accommodating the first gear 23 and the second gear 24 is formed at one end of the housing 1, that is, the groove 14 is in the shape of an "8". A through hole 15 communicating with the mounting hole 13 is formed on the inner wall of the groove 14, and the worm 25 is rotatably mounted inside the through hole 15.

[0033] The transmission mechanism 3 includes a first locating ring 34 and a second locating ring 35 fixed by bolts. A third collar 36 is sleeved and fixed to the outer wall of one end of the second locating ring 35. One end of the third collar 36 is inserted into the inner ring of the worm gear 26. The second locating ring 35 is a locating ring with flanges on both sides, and the third collar 36 is a collar with a flange on one end.

[0034] The transmission mechanism 3 also includes a sleeve 33 that passes through the first positioning ring 34 and the second positioning ring 35 and is inserted into the inner ring of the third ring 36. It is worth noting that one end of the sleeve 33 has a small diameter and the other end has a large diameter. The end with the smaller diameter on the sleeve 33 is inserted into the inner ring of the third ring 36. The outer wall of one end (the end with the larger diameter) of the sleeve 33 is sleeved with the second ring 32, and the outer wall of the second ring 32 is sleeved with the first ring 31. The first ring 31 and the first positioning ring 34 are connected by bolts, and the turntable 4 is connected to the first ring 31.

[0035] A fixing cover 38 is connected to the side of the worm wheel 26 by bolts. The fixing cover 38 is located inside the mounting hole 13 . A third positioning ring 37 is installed inside the fixing cover 38 . The third positioning ring 37 is connected to one end of the sleeve 33 .

[0036] One side of the housing 1 is connected to a clamping block 11 and a mounting seat 12 for mounting the housing 1. The clamping block 11 is provided with a C-shaped clamping slot.

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

Claims

1. A CNC horizontal turntable, comprising a housing (1), characterized in that: A transmission mechanism (3) for driving a workpiece to rotate is installed inside the housing (1), a driving mechanism (2) for driving the transmission mechanism (3) to rotate is installed on one side of the housing (1), and an oil supply mechanism for supplying oil to the machining process is installed on the transmission mechanism (3); The driving mechanism (2) includes a motor (22), one end of the output shaft of the motor (22) is sleeved with a first gear (23), a worm (25) is rotatably mounted inside the housing (1), an outer wall of one end of the worm (25) is sleeved with a second gear (24), the first gear (23) is meshed with the second gear (24), a worm wheel (26) meshed with the worm (25) is also rotatably mounted inside the housing (1), the transmission mechanism (3) is plugged into the inner ring of the worm wheel (26), and a turntable (4) located on one side of the housing (1) is fixed to one end of the transmission mechanism (3).

2. The CNC horizontal turntable according to claim 1, characterized in that: The cover shell (1) is provided with a mounting hole (13), and the worm gear (26) and the transmission mechanism (3) are both rotatably mounted inside the mounting hole (13).

3. The CNC horizontal turntable according to claim 2, characterized in that: A groove (14) for accommodating a first gear (23) and a second gear (24) is provided at one end of the housing (1); a through hole (15) communicating with the mounting hole (13) is provided on the inner wall of the groove (14); and the worm (25) is rotatably mounted inside the through hole (15).

4. The CNC horizontal turntable according to claim 1, characterized in that: The transmission mechanism (3) comprises a first positioning ring (34) and a second positioning ring (35) fixed by bolts, a third sleeve ring (36) is sleeved and fixed on the outer wall of one end of the second positioning ring (35), and one end of the third sleeve ring (36) is inserted into the inner ring of the worm gear (26).

5. The CNC horizontal turntable according to claim 4, characterized in that: The transmission mechanism (3) further comprises a sleeve (33) which passes through the first positioning ring (34) and the second positioning ring (35) and is inserted into the inner ring of the third sleeve (36); the outer wall of one end of the sleeve (33) is sleeved with the second sleeve (32); the outer wall of the second sleeve (32) is sleeved with the first sleeve (31); and the first sleeve (31) and the first positioning ring (34) are connected by bolts.

6. The CNC horizontal turntable according to claim 5, characterized in that: The side of the worm wheel (26) is connected to a fixing cover (38) by bolts, and a third positioning ring (37) is installed inside the fixing cover (38), and the third positioning ring (37) is connected to one end of the sleeve (33).

7. The CNC horizontal turntable according to claim 1, characterized in that: One side of the cover shell (1) is respectively connected with a clamping block (11) and a mounting seat (12) for mounting the cover shell (1).

8. The CNC horizontal turntable according to claim 1, characterized in that: The oil supply mechanism comprises an oil supply cylinder (6) rotatably mounted inside a sleeve (33), a plurality of oil pipes (5) mounted on a first sleeve ring (31), and an oil passage block (7) mounted on a housing (1); the oil pipes (5) are connected between the oil supply cylinder (6) and the oil passage block (7).

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