Pneumatic drive integrated main shaft

Abstract

The utility model discloses a pneumatic driving integrated main shaft, and relates to the technical field of pneumatic main shafts. The device comprises a base, two sets of bearings are fixedly connected to the inner wall of the base in an inserted mode, a copper sleeve is connected to the inner wall of the base in an inserted mode, the copper sleeve is located between the two sets of bearings, a body is rotationally installed in the base through the bearings, and one end of the body is sleeved with a belt wheel. The nut is used for locking the bearing, the retaining ring is used for preventing water and dust, the piston is used for moving back and forth under the action of air pressure and driving the spring collet chuck to move back and forth, the belt pulley is used for sealing the air cylinder and transmitting the torque of the motor, and the baffle blocks the synchronous belt and prevents the synchronous belt from deviating. 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, the rotating speed is high, noise is low, precision is high, workpieces can be clamped, the workpieces can be internally supported, and through hole design facilitates configuration of devices such as positioning, feeding and internal water outlet.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic spindles, in particular to a pneumatically driven integrated spindle. Background Art

[0002] The pneumatically driven integrated spindle is an integrated spindle design that uses air pressure as a power source and drives the spindle rotation through high-speed airflow. This design is widely used in machining, especially in high-speed, lightweight cutting, grinding and polishing.

[0003] The traditional integrated spindle is composed of three parts: the spindle, the cylinder, and the passive collet. The three parts are combined together. Therefore, the existing integrated spindle is relatively long and large in size, and the spindle through-hole is relatively small and long. As a result, the existing integrated spindle has certain limitations when used.

[0004] For this purpose, a pneumatically driven integrated spindle is proposed. Utility Model Content

[0005] The purpose of the present invention is to solve the problems raised in the above background technology, and the present invention provides a pneumatically driven integrated spindle.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0007] A pneumatically driven integrated spindle comprises a base, two sets of bearings are fixedly plugged into the inner wall of the base, a copper sleeve is plugged into the inner wall of the base, and the copper sleeve is located between the two sets of bearings, a body is rotatably mounted inside the base via the bearing, one end of the body is sleeved with a pulley, a piston is plugged into the interior of the body and the pulley, a nut is sleeved on the surface of the body, a guard ring is provided on the end face of the base, a baffle is provided on the end face of the pulley, an elastic collet is plugged into the interior of the body and the piston, and a hole A and a hole B are opened on the surface of the base.

[0008] Furthermore, an annular groove is formed on the inner wall of the pulley, and a first sealing ring is sleeved in the annular groove on the inner wall of the pulley, and the surface of the first sealing ring is fitted to the surface of the piston.

[0009] Furthermore, an annular groove is formed on the outer surface of the piston, and a second sealing ring is sleeved in the annular groove on the piston surface, and the surface of the second sealing ring is fitted to the inner wall of the pulley.

[0010] Furthermore, an annular groove is formed on the outer surface of the body, and a third sealing ring is sleeved in the annular groove on the surface of the body, and the surface of the third sealing ring is fitted to the inner wall of the pulley.

[0011] Furthermore, the inner wall of the body is provided with at least two groups of annular grooves, and a fourth sealing ring is sleeved in the annular grooves on the inner wall of the body, and the surface of the fourth sealing ring is fitted to the outer surface of the piston.

[0012] Furthermore, the end of the elastic collet is in a three-petal structure, and the elastic collet is made of spring steel.

[0013] The beneficial effects of the utility model are as follows:

[0014] The base is used to support the axis and docking installation, the copper sleeve is used for air path conversion, from point air intake to annular air path, the bearing is used to support the axis and rotate, and ensure accuracy, the body is used for the axis, and the elastic collet is forced to shrink, and ensure accuracy, the nut is used to lock the bearing, the guard ring is used for waterproof and dustproof, the piston is used to move back and forth under the action of air pressure, and drive the spring collet to move back and forth, the pulley is used to seal the cylinder and transmit the motor torque, and the baffle is used to block the synchronous belt from deviating. This integrated spindle is easy to match and install with the machine tool bed, does not require a rear cylinder and pull rod, has a compact structure and short length, is convenient for automated material connection and post-feeding, has high speed, low noise, high precision, can clamp workpieces, and can also support workpieces internally. The through-hole design is convenient for configuring positioning, feeding, internal water outlet and other devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 It is an exploded view of the utility model;

[0017] Figure 3 It is a cross-sectional view of the utility model;

[0018] Figure numerals: 1. base; 2. body; 3. copper sleeve; 4. pulley; 5. piston; 6. nut; 7. guard ring; 8. baffle; 9. first sealing ring; 10. second sealing ring; 11. third sealing ring; 12. fourth sealing ring; 13. bearing; 14. elastic collet; 15. hole A; 16. hole B. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0022] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0023] like Figures 1 to 3As shown, a pneumatically driven integrated spindle includes a base 1, the inner wall of the base 1 is fixedly plugged with two sets of bearings 13, the inner wall of the base 1 is plugged with a copper sleeve 3, and the copper sleeve 3 is located between the two sets of bearings 13, the interior of the base 1 is rotatably mounted with a body 2 through the bearing 13, one end of the body 2 is sleeved with a pulley 4, the interior of the body 2 and the pulley 4 is plugged with a piston 5, the surface of the body 2 is sleeved with a nut 6, the end face of the base 1 is provided with a guard ring 7, the end face of the pulley 4 is provided with a baffle 8, the interior of the body 2 and the piston 5 is plugged with an elastic collet 14, and the surface of the base 1 is provided with an A hole 15 and a B hole 16. More specifically, when high-pressure gas enters from the A hole 15 on the base 1 and enters the copper sleeve 3, the high-pressure gas will pass through the annular groove on the copper sleeve 3 to form an air ring, and enter the hole on the main body 2 through the hole on the copper sleeve 3, and then continue to move forward into the cylinder, and then enter the left air chamber of the piston 5, thereby driving the piston 5 to move to the right, and the piston 5 drives the elastic collet 14 to move forward. Under the action of its own elastic force, the elastic collet 14 opens the inner hole and loosens it. At this time, the workpiece can be placed, and the air intake direction is switched so that the high-pressure gas enters from the B hole 16 on the base 1. When entering the copper sleeve 3, the high-pressure gas will pass through the annular groove on the copper sleeve 3 and enter the main body 2, thereby continuing to move forward into the cylinder, and then enter the right side of the piston 5. The side air chamber drives the piston 5 to the left, and the piston 5 drives the elastic collet 14 to move to the left. Under the action of the taper of the inner wall of the main body 2, the inner hole of the elastic collet 14 becomes smaller, thereby clamping the workpiece. The base 1 is used to support the axis and docking installation. The copper sleeve 3 is used for air path conversion, from point air intake to an annular air path. The bearing 13 is used to support the axis and rotate to ensure accuracy. The main body 2 is used for the axis and forces the elastic collet 14 to shrink to ensure accuracy. The nut 5 is used to lock the bearing 13. The protective ring 7 is used for waterproof and dustproof. The piston 5 is used to move back and forth under the action of air pressure and drive the spring collet 14 to move back and forth. The pulley 4 is used to seal the cylinder and transmit the motor torque. The baffle 8 is used to block the synchronous belt from deviating.

[0024] The inner wall of the pulley 4 is provided with an annular groove, and a first sealing ring 9 is sleeved in the annular groove of the inner wall of the pulley 4, and the surface of the first sealing ring 9 is in contact with the surface of the piston 5. More specifically, the gap between the pulley 4 and the piston 5 is sealed by the first sealing ring 9.

[0025] The outer surface of the piston 5 is provided with an annular groove, and a second sealing ring 10 is sleeved in the annular groove on the surface of the piston 5, and the surface of the second sealing ring 10 is arranged in contact with the inner wall of the pulley 4. More specifically, the second sealing ring 10 further seals the gap between the piston 5 and the pulley 4.

[0026] The outer surface of the body 2 is provided with an annular groove, and a third sealing ring 11 is sleeved in the annular groove on the surface of the body 2, and the surface of the third sealing ring 11 is arranged in contact with the inner wall of the pulley 4. More specifically, the gap between the body 2 and the pulley 4 is sealed by the third sealing ring 11.

[0027] The inner wall of the body 2 is formed with at least two sets of annular grooves, and a fourth sealing ring 12 is installed in the annular grooves of the inner wall of the body 2. The surface of the fourth sealing ring 12 is arranged to be in contact with the outer surface of the piston 5. More specifically, the fourth sealing ring 12 is used to seal the gap between the body 2 and the piston 5.

[0028] The end of the elastic collet 14 is a three-lobed structure, and the elastic collet 14 is made of spring steel. More specifically, the elastic collet 14 is made of spring steel and has a three-lobed structure at the end, so that the elastic collet 14 can be expanded under its own elastic force when moving to the right.

[0029] In summary: when high-pressure gas enters from the A hole 15 on the base 1 and enters the copper sleeve 3, the high-pressure gas will pass through the annular groove on the copper sleeve 3 to form an air ring, and enter the hole on the copper sleeve 3 into the hole on the body 2, and then continue forward into the cylinder, and then enter the left air chamber of the piston 5, thereby driving the piston 5 to move to the right, and the piston 5 drives the elastic collet 14 to move forward. Under the action of its own elastic force, the elastic collet 14 opens the inner hole and loosens. At this time, the workpiece can be placed, and the air intake direction is switched to make the high-pressure gas enter from the B hole 16 on the base 1. When entering the copper sleeve 3, the high-pressure gas will pass through the annular groove on the copper sleeve 3 and enter the body 2, and then continue forward into the cylinder, and then enter the right air chamber of the piston 5, thereby driving the piston 5 to the left. The piston 5 drives the elastic collet 14 to move to the left. Under the action of the taper of the inner wall of the body 2, the inner hole of the elastic collet 14 becomes smaller, thereby clamping the workpiece.

[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 to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatically driven integrated spindle, characterized in that: The invention comprises a base (1), wherein two groups of bearings (13) are fixedly inserted into the inner wall of the base (1), a copper sleeve (3) is inserted into the inner wall of the base (1), and the copper sleeve (3) is located between the two groups of bearings (13), a body (2) is rotatably mounted inside the base (1) through the bearing (13), one end of the body (2) is sleeved with a pulley (4), a piston (5) is inserted into the inside of the body (2) and the pulley (4), a nut (6) is sleeved on the surface of the body (2), a guard ring (7) is provided on the end face of the base (1), a baffle (8) is provided on the end face of the pulley (4), an elastic collet (14) is inserted into the inside of the body (2) and the piston (5), and a hole A (15) and a hole B (16) are opened on the surface of the base (1).

2. The pneumatically driven integrated spindle according to claim 1, characterized in that: The inner wall of the pulley (4) is provided with an annular groove, and a first sealing ring (9) is sleeved in the annular groove of the inner wall of the pulley (4), and the surface of the first sealing ring (9) is arranged in contact with the surface of the piston (5).

3. The pneumatically driven integrated spindle according to claim 1, characterized in that: The outer surface of the piston (5) is provided with an annular groove, and a second sealing ring (10) is sleeved in the annular groove on the surface of the piston (5), and the surface of the second sealing ring (10) is arranged in contact with the inner wall of the pulley (4).

4. The pneumatically driven integrated spindle according to claim 1, characterized in that: An annular groove is provided on the outer surface of the body (2), and a third sealing ring (11) is sleeved in the annular groove on the surface of the body (2), and the surface of the third sealing ring (11) is fitted with the inner wall of the pulley (4).

5. The pneumatically driven integrated spindle according to claim 1, characterized in that: The inner wall of the body (2) is provided with at least two groups of annular grooves, and a fourth sealing ring (12) is sleeved in the annular grooves of the inner wall of the body (2), and the surface of the fourth sealing ring (12) is fitted to the outer surface of the piston (5).

6. The pneumatically driven integrated spindle according to claim 1, characterized in that: The end of the elastic collet (14) is in a three-petal structure, and the elastic collet (14) is made of spring steel.

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