CN206263606U - Hollow turntable - Google Patents

Abstract

A workbench 1 is fixedly connected with a mandrel 6, the mandrel 6 is fixedly connected with a torque motor rotor 7, a screw I11 penetrates through a pressing plate 20, a radial raceway 5a of a turntable bearing and a thrust washer 5c of the turntable bearing to be fixedly connected with the mandrel 6, a pneumatic clamp 4 is concentric with the mandrel 6, is sleeved on the outer side of the mandrel 6 and is fixedly connected with an upper flange 2, the upper flange 2 and a torque motor stator 9 are respectively and fixedly connected with a turntable body 21, a radial raceway 5b of the turntable bearing is fixedly connected with the turntable body 21 through a screw II 11, a lower flange 19 is fixedly connected with the turntable body 21, and a flange sleeve 14 is fixedly connected with the lower flange 19. The beneficial effects of the utility model are that high rotational speed, full cut-off ring control, locking mode safety ring protects. The hollow workbench can expand the processing range of the traditional vertical processing center and meet the processing requirements of shafts or other parts with larger length-diameter ratio.

Description

Hollow turntable

technical field

The utility model relates to a hollow turntable, in particular to a C-axis hollow turntable for machine tools

Background technique

The turntable is an important functional part of the machining center. Its rotary motion is linked with other linear axes to process various complex curved surfaces or special-shaped parts. The supporting machining centers have been widely used in modern military and aerospace industries. The existing turntable adopts a center positioning structure. There is a positioning center hole in the center of the workbench, and its lower part is connected with the rotating part of the rotary encoder. The rotary encoder is fixed on the base body through the encoder support, and the lower part of the base is sealed with a base cover plate. For some parts with relatively large long-diameter or long length but only partially need to be processed, the turntable of this design method can only be installed above the work table, so it is necessary to make fixtures with high height or complex structure for fixing, which increases the processing time. Difficulty, and lost the stroke of the linear axis (as shown in Figure 1).

Utility model content

The technical problem solved by the utility model is to overcome the deficiencies of the prior art and provide a C-axis hollow turntable for machine tools.

The technical scheme adopted by the utility model is a hollow turntable, the workbench is fixedly connected to the mandrel, the mandrel is fixedly connected to the torque motor rotor, and the screw passes through the pressure plate, the centripetal seat ring of the turntable bearing and the thrust washer of the turntable bearing are fixed to the mandrel. Connection, the pneumatic clamp is concentric with the mandrel, sleeved on the outside of the mandrel, and fixedly connected with the upper flange, the upper flange and the stator of the torque motor are respectively fixedly connected with the turntable body, and the ring of the turntable bearing to the mandrel is connected to the turntable through the second screw The body is fixedly connected, the lower flange is fixedly connected to the turntable body, and the flange sleeve is fixedly connected to the lower flange. The rotor of the torque motor rotates, driving the mandrel to rotate and the worktable to rotate. The radial and axial forces on the workbench are transmitted to the turntable body through the turntable bearing, and the pneumatic clamp can lock the mandrel.

A dust-proof ring is arranged between the working table and the upper flange. A V-shaped ring is arranged between the mandrel and the flange sleeve, and a cover plate is installed at the lower end of the turntable body. The flange sleeve is provided with an air-tight vent hole, and an expansion plug is arranged inside. These seals can prevent dust, water and other impurities from entering the interior of the turntable, affecting the accuracy and service life of the turntable.

The reading head is fixedly connected with the lower flange. The rotary magnetic scale is fixedly connected to the mandrel. The readhead and rotating magnetic scale are used for magnetic scale detection of the C-axis rotary rotary feedback.

The beneficial effect of the utility model is that the hollow turntable of the utility model has high rotating speed, fully closed-loop control, and the locking method is safe and environment-friendly. Because the workbench is hollow, the processing range of traditional vertical machining centers can be expanded to meet the processing of shafts or other parts with relatively large length and diameter.

Description of drawings

Fig. 1 is the structural representation of the turntable of the prior art of the utility model;

Fig. 2 is a schematic structural view of the hollow turntable of the present invention.

Marked in the figure: 1-table, 2-upper flange, 3-dust ring, 4-pneumatic clamp, 5-turntable bearing, 6-mandrel, 7-torque motor rotor, 8-adjusting pad, 9-torque motor stator, 10-screw 1, 11-screw 2, 12-cover plate, 13-expansion plug, 14-flange sleeve, 15-reading head, 16-rotary magnetic scale, 17-V-shaped ring, 19-Lower flange, 20-Press plate, 21-Turntable body, 5a-Turntable bearing radial seat ring, 5b-Turntable bearing radial shaft ring, 5c-Turntable bearing thrust washer

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

In the hollow turntable shown in Figure 2, the worktable 1 is fixedly connected to the mandrel 6, the mandrel 6 is fixedly connected to the torque motor rotor 7, and the screw 11 passes through the pressure plate 20, the centripetal seat ring 5a of the turntable bearing and the thrust of the turntable bearing. The gasket 5c is fixedly connected with the mandrel 6, the pneumatic clamp 4 is concentric with the mandrel 6, sleeved on the outside of the mandrel 6, and fixedly connected with the upper flange 2, the upper flange 2 and the torque motor stator 9 are respectively connected with the turntable body 21 Fixed connection, turntable bearing centripetal shaft ring 5b is fixedly connected with turntable body 21 through screw 2 11, lower flange 19 is fixedly connected with turntable body 21, and flange sleeve 14 is fixedly connected with lower flange 19. The rotor of the torque motor rotates, driving the mandrel to rotate and the worktable to rotate. The radial and axial forces on the workbench are transmitted to the turntable body through the turntable bearing, and the pneumatic clamp can lock the mandrel.

A dustproof ring 3 is provided between the workbench 1 and the upper flange 2 . A V-shaped ring 17 is arranged between the mandrel 6 and the flange sleeve 14 , and a cover plate 12 is installed at the lower end of the turntable body 21 . The flange sleeve 14 is provided with an airtight air hole, and an expansion plug 13 is provided inside. These seals can prevent dust, water and other impurities from entering the interior of the turntable, affecting the accuracy and service life of the turntable.

The reading head 15 is fixedly connected with the lower flange 19 . The rotary magnetic scale 16 is fixedly connected with the spindle 6 . The readhead and rotating magnetic scale are used for magnetic scale detection of the C-axis rotary rotary feedback.

The beneficial effect of the utility model is that the hollow turntable of the utility model has high rotating speed, fully closed-loop control, and the locking method is safe and environment-friendly. Because the workbench is hollow, the processing range of traditional vertical machining centers can be expanded to meet the processing of shafts or other parts with relatively large length and diameter.

Claims (9)

1. Hollow turntable, characterized in that: the workbench (1) is fixedly connected to the mandrel (6), the mandrel (6) is fixedly connected to the torque motor rotor (7), and screw one (10) passes through the pressure plate (20) , The rotary table bearing centripetal seat (5a) and the rotary table bearing thrust washer (5c) are fixedly connected with the mandrel (6), and the pneumatic clamp (4) is concentric with the mandrel (6), sleeved on the outside of the mandrel (6), and It is fixedly connected with the upper flange (2), the upper flange (2) and the torque motor stator (9) are respectively fixedly connected with the turntable body (21), and the turntable bearing centripetal shaft ring (5b) is passed through the second screw (11) It is fixedly connected with the turntable body (21), the lower flange (19) is fixedly connected with the turntable body (21), and the flange sleeve (14) is fixedly connected with the lower flange (19). 2. The hollow turntable according to claim 1, characterized in that: a dustproof ring (3) is provided between the workbench (1) and the upper flange (2). 3. The hollow turntable according to claim 1, characterized in that: the reading head (15) is fixedly connected to the lower flange (19). 4. The hollow turntable according to claim 1, characterized in that: the rotary magnetic scale (16) is fixedly connected to the mandrel (6). 5. The hollow turntable according to claim 1, characterized in that: a V-shaped ring (17) is provided between the mandrel (6) and the flange sleeve (14). 6. The hollow turntable according to claim 1, characterized in that: the mandrel (6) and the torque motor rotor (7) are provided with adjustment pads (8). 7. The hollow turntable according to claim 1, characterized in that: a cover plate (12) is installed at the lower end of the turntable body (21). 8. The hollow turntable according to claim 1, characterized in that: the flange sleeve (14) is provided with air-tight ventilation holes. 9. The hollow turntable according to claim 8, characterized in that: an expansion plug (13) is provided in the air-tight vent hole of the flange sleeve (14).