Integrated main shaft unit

Abstract

The utility model discloses an integrated main shaft unit, and relates to the technical field of main shaft units. The device comprises a base, a driven body is rotationally inserted into the base, an R-shaped locking nut is arranged on the base, a large gear is fixedly connected to the end of the driven body, a support is fixedly installed on the surface of the base, a connecting plate is arranged on the surface of the support, and a speed reducer is installed on the support through the connecting plate. When rotary indexing is needed, the servo motor rotates forwards to drive the speed reducer to reduce the rotating speed, then the pinion drives the large gear on the driven body to rotate by a certain angle, the main shaft unit can be easily matched and installed with a machine tool body, a rear air cylinder and a pull rod are not needed, the structure is compact, the length is short, automatic material receiving and rear feeding are convenient, and the machining efficiency is improved. Through the transmission of the external speed reducer, the positioning precision is high, the transmission torque is large, the noise is low, the precision is high, and round, square and special-shaped workpieces can be clamped through the spring collet chuck.

Description

Technical Field

[0001] The utility model relates to the technical field of spindle units, and particularly relates to an integrated spindle unit. Background Art

[0002] Traditional spindle units are usually composed of five parts, namely: motor, transmission wheel, spindle, cylinder, and collet. Combining these five components together, they have a relatively long length, a relatively thick outer shape, a relatively small and long spindle through-hole.

[0003] Therefore, an integrated spindle unit is proposed. Content of the Utility Model

[0004] The purpose of the utility model is: to solve the problems raised in the above background art, the utility model provides an integrated spindle unit.

[0005] The utility model specifically adopts the following technical solutions to achieve the above purpose:

[0006] An integrated spindle unit includes a base. A passive body is rotatably inserted into the base. An R-type locking nut is provided on the base. A large gear is fixedly connected to the end of the passive body. A bracket is fixedly installed on the surface of the base. A connecting plate is provided on the surface of the bracket, and a speed reducer is installed on the bracket through the connecting plate. A cushion block and a bracket are provided at the output end of the speed reducer. A servo motor is connected to the input end of the speed reducer. The other end of the passive body is provided with a chassis. A lower cylinder body is installed on the chassis through a bearing. A piston is sleeved on the chassis. A sliding sleeve is sleeved on the chassis, and a thrust ball bearing is provided between the sliding sleeve and the piston. An upper cylinder body is provided on the surface of the piston. A spring collet is provided inside the chassis. A hole A and a hole B are respectively opened on the surfaces of the lower cylinder body and the upper cylinder body.

[0007] Further, an angular contact bearing is provided inside the base, and the passive body is inserted into the angular contact bearing, and the passive body and the base are rotatably inserted through the angular contact bearing.

[0008] Further, dust-proof rings are provided at the ends of the sliding sleeve, the piston, and the upper cylinder body to seal and dust-proof their ends.

[0009] Further, the piston is driven by air pressure or oil pressure to clamp and loosen the spring collet.

[0010] Further, a sealing cover is provided on the end of the base and the surface of the passive body to seal the gap between the base and the passive body.

[0011] Further, the speed reducer adopts a planetary speed reducer.

[0012] The beneficial effects of the present utility model are as follows:

[0013] When oil / gas enters from hole A, the oil / gas pushes the piston forward. The upper cylinder body moves forward and pushes the thrust ball bearing forward. The moving ring of the thrust ball bearing drives the sliding sleeve. After the taper conversion, the sliding sleeve drives the spring collet to contract radially, and the secondary claws on the spring collet clamp the workpiece. When oil / gas enters from hole B, it drives the piston to move backward. The piston pulls the dust ring to move backward as well. Then, through the ball rollers on the dust ring, the end face of the sliding sleeve is pushed, causing the sliding sleeve to move backward. Since the spring collet is fixed to the chassis, the spring collet will not move backward, resulting in the forced separation of the spring collet and the sliding sleeve. Under the action of its own elastic force, the spring collet can achieve the purpose of forcibly loosening the workpiece, and then the continuous opening and clamping operations can be automated for production. When rotary indexing is required, the servo motor rotates forward, driving the reducer to reduce the rotation speed. Then, through the small gear, the large gear on the passive body rotates by a certain angle. This spindle unit is easy to be installed in cooperation with the machine tool bed body without the need for a rear cylinder and a pull rod. Moreover, it has a compact structure, a short length, is convenient for automatic loading and subsequent feeding. The transmission has high positioning accuracy, a large transmission torque, low noise, and high precision. The spring collet can clamp round, square, and irregular workpieces. Description of the Drawings

[0014] Figure 1 is the three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 2 is the side view of the present utility model;

[0016] Figure 3 is the exploded view of the present utility model;

[0017] Figure 4 is the front cross-sectional view of the present utility model;

[0018] Reference numerals: 1, base; 2, passive body; 3, sealing cover; 4, large gear; 5, small gear; 6, bracket; 7, connecting plate; 8, cushion block; 9, R-type locking nut; 10, angular contact bearing; 11, reducer; 12, chassis; 13, lower cylinder body; 14, upper cylinder body; 15, piston; 16, sliding sleeve; 17, dust ring; 18, hole A; 19, hole B; 20, spring collet; 21, servo motor. Detailed Description of the Invention

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Components of the embodiments of the present utility model generally described and illustrated in the accompanying drawings here can be arranged and designed in a variety of different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0021] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, terms such as "first", "second", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0022] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "inner", "outer", "upper", etc. is based on the orientation or positional relationship shown in the accompanying drawings or the orientation or positional relationship in which the product of the present utility model is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model.

[0023] Such as Figures 1 to 4As shown in the figure, an integrated spindle unit includes a base 1. A passive body 2 is rotatably inserted inside the base 1. An R-type locking nut 9 is provided on the base 1. A large gear 4 is fixedly connected to the end of the passive body 2. A bracket 6 is fixedly installed on the surface of the base 1. A connecting plate 7 is provided on the surface of the bracket 6. A speed reducer 11 is installed on the bracket 6 through the connecting plate 7. A cushion block 8 and a bracket 6 are provided at the output end of the speed reducer 11. The input end of the speed reducer 11 is connected to a servo motor 21. The other end of the passive body 2 is provided with a chassis 12. A lower cylinder body 13 is installed on the chassis 12 through a bearing. A piston 15 is sleeved on the chassis 12. A sliding sleeve 16 is sleeved on the chassis 12. A thrust ball bearing is provided between the sliding sleeve 16 and the piston 15. An upper cylinder body 14 is provided on the surface of the piston 15. A spring collet 20 is provided inside the chassis 12. A hole A 18 and a hole B 19 are respectively formed on the surfaces of the lower cylinder body 13 and the upper cylinder body 14. More specifically, when oil / gas enters from the hole A 18, the oil / gas pushes the piston 15 forward. The forward movement of the upper cylinder body 14 pushes the thrust ball bearing forward. The moving ring of the thrust ball bearing drives the sliding sleeve 16. After the taper conversion by the sliding sleeve 16, the spring collet 20 is driven to perform radial contraction, and the secondary claws on the spring collet 20 clamp the workpiece. When oil / gas enters from the hole B 19, the piston 15 is driven to move backward. The piston 15 pulls the dust-proof ring 17 to move backward as well. Then, through the ball rollers on the dust-proof ring 17, the end face of the sliding sleeve 16 is pushed, so that the sliding sleeve 16 also moves backward. Since the spring collet 20 is fixed on the chassis 12, the spring collet 20 does not move backward, causing the spring collet 20 and the sliding sleeve 16 to be forcibly separated. Under the action of its own elastic force, the spring collet 20 is used to achieve the purpose of forcibly loosening the workpiece, and then the continuous opening and clamping work can be realized to achieve automated production. When rotary indexing is required, the servo motor 21 rotates forward, driving the speed reducer 11 to reduce the rotation speed, and then driving the large gear 4 on the passive body 2 to rotate by a certain angle through the small gear 5.

[0024] An angular contact bearing 10 is provided inside the base 1. The passive body 2 is inserted inside the angular contact bearing 10. The passive body 2 and the base 1 are rotatably inserted through the angular contact bearing 10. More specifically, the rotation between the base 1 and the passive body 2 is realized through the angular contact bearing 10, reducing the friction between the base 1 and the passive body 2 and making the rotary motion easier.

[0025] Dust-proof rings 17 are provided at the ends of the sliding sleeve 16, the piston 15, and the upper cylinder body 14 to seal and dust-proof their ends. More specifically, the ends of the sliding sleeve 16, the piston 15, and the upper cylinder body 14 are sealed and dust-proofed through the dust-proof rings 17.

[0026] The piston 15 is driven by air pressure or oil pressure to realize the clamping and loosening of the spring collet 20. More specifically, the clamping and loosening of the spring collet 20 are driven by air pressure or oil pressure, making the spindle unit have low noise and high precision.

[0027] A sealing cover 3 is provided at the end of the base 1 and the surface of the passive body 2 for sealing the gap between the base 1 and the passive body 2. More specifically, the end gap between the base 1 and the passive body 2 is sealed by the sealing cover 3.

[0028] The speed reducer 11 adopts a planetary speed reducer. More specifically, the adoption of the planetary speed reducer by the speed reducer 11 enables high transmission positioning accuracy and relatively large torque.

[0029] In summary: when oil / gas enters from the A hole 18, the oil / gas pushes the piston 15 to move forward, the upper cylinder block 14 moves forward to push the thrust ball bearing forward, the moving ring of the thrust ball bearing drives the sliding sleeve 16, and after the taper conversion, the sliding sleeve 16 drives the spring collet 20 to contract radially, and the secondary claws on the spring collet 20 clamp the workpiece; when oil / gas enters from the B hole 19, it drives the piston 15 to move backward, and the piston 15 pulls the dust-proof ring 17 to move backward as well. Then, through the ball rollers on the dust-proof ring 17, the end face of the sliding sleeve 16 is pushed, causing the sliding sleeve 16 to move backward. Since the spring collet 20 is fixed on the chassis 12, the spring collet 20 will not move backward, forcing the spring collet 20 and the sliding sleeve 16 to separate. Under the action of its own elastic force, the spring collet 20 is used to achieve the purpose of forcibly loosening the workpiece, and then the continuous opening and clamping operations can realize automated production; when rotary indexing is required, the servo motor 21 rotates forward, driving the speed reducer 11 to reduce the rotation speed, and then driving the large gear 4 on the passive body 2 to rotate a certain angle through the pinion 5.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated spindle unit, characterized in that: The invention comprises a base (1), a passive body (2) is rotatably inserted inside the base (1), an R-type locking nut (9) is provided on the base (1), a large gear (4) is fixedly connected to the end of the passive body (2), a bracket (6) is fixedly installed on the surface of the base (1), a connecting plate (7) is provided on the surface of the bracket (6), a reducer (11) is installed on the bracket (6) via the connecting plate (7), a cushion block (8) and the bracket (6) are provided on the output end of the reducer (11), and a servo motor (21) is connected to the input end of the reducer (11). The other end of the passive body (2) is provided with a chassis (12), a lower cylinder (13) is mounted on the chassis (12) via a bearing, a piston (15) is sleeved on the chassis (12), a sliding sleeve (16) is sleeved on the chassis (12), and a thrust ball bearing is provided between the sliding sleeve (16) and the piston (15), an upper cylinder (14) is provided on the surface of the piston (15), a spring collet (20) is provided inside the chassis (12), and an A hole (18) and a B hole (19) are respectively provided on the surfaces of the lower cylinder (13) and the upper cylinder (14).

2. An integrated spindle unit according to claim 1, characterized in that: An angular contact bearing (10) is arranged inside the base (1), and the passive body (2) and the inside of the angular contact bearing (10) are plugged in, and the passive body (2) and the base (1) are rotationally plugged in via the angular contact bearing (10).

3. The integrated spindle unit according to claim 1, characterized in that: The ends of the sliding sleeve (16), the piston (15) and the upper cylinder body (14) are provided with dustproof rings (17) to seal and prevent dust from forming at the ends.

4. The integrated spindle unit according to claim 1, characterized in that: The piston (15) is driven by air pressure or oil pressure to achieve the clamping and loosening of the spring collet (20).

5. The integrated spindle unit according to claim 1, characterized in that: The end of the base (1) and the surface of the passive body (2) are provided with a sealing cover (3) for sealing the gap between the base (1) and the passive body (2).

6. The integrated spindle unit according to claim 1, characterized in that: The reducer (11) is a planetary reducer.

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