Connecting structure of machine tool spindle

Abstract

The utility model discloses a connecting structure of a machine tool spindle in the technical field of numerical control machine tools, which comprises a base, a first inserting shaft is fixedly inserted on the surface of an output shaft, a second bearing frame is fixedly mounted at the top of the base, and a spindle body is movably arranged on the inner side of the second bearing frame in a penetrating manner. One end of the main shaft body is fixedly connected with a threaded shaft, one end of the threaded shaft is fixedly connected with a connecting shaft, the main shaft body and the output shaft are conveniently installed and connected through the arranged sleeve, the arranged limiting hole, the arranged connecting hole, the arranged first inserting shaft and the arranged second inserting shaft, meanwhile, the main shaft body and the output shaft are conveniently disassembled and separated, and the using effect of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of numerically controlled machine tools, and in particular relates to a connecting structure of a main shaft of a machine tool. Background Art

[0002] CNC lathe is one of the most widely used CNC machine tools. It is mainly used for cutting and processing of inner and outer cylindrical surfaces of shaft parts or disc parts, inner and outer conical surfaces of arbitrary cone angles, complex rotary inner and outer curved surfaces, and cylindrical and conical threads, and can perform grooving, drilling, reaming, reaming and boring. The spindle is an important part of the machine tool, which is used to arrange the working spindle of the machine tool and its transmission parts and corresponding additional mechanisms. The spindle box adopts multi-stage gear transmission. Through a certain transmission system, the transmission gears and transmission shafts at various positions in the spindle box finally transmit the motion to the spindle, so that the spindle obtains the specified speed and direction.

[0003] Existing machine tool spindle connection structures are all integrated structures, which are inconvenient to connect and assemble, and the connection rigidity is insufficient, resulting in poor use effect. Therefore, we propose a machine tool spindle connection structure. Utility Model Content

[0004] The utility model aims to provide a connection structure for a machine tool spindle, so as to solve the problem in the above background technology that the existing connection structures for machine tool spindles are all integrated structures and are inconvenient to connect and assemble.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a connection structure of a machine tool spindle, comprising a base, a motor is provided on the top of the base, a first bearing frame is provided on the top of the base, an output shaft is provided at one end of the motor, a first plug-in shaft is provided on the surface of the output shaft, a second bearing frame is provided on the top of the base, a spindle body is provided on the inner side of the second bearing frame, a threaded shaft is provided at one end of the spindle body, a connecting shaft is provided at one end of the threaded shaft, a second plug-in shaft is provided on the surface of the connecting shaft, a sleeve is provided on the surface of the connecting shaft, a limiting hole is provided on the surface of the sleeve, a connecting hole is provided at one end of the sleeve, a spring is provided on the surface of the threaded shaft, and a fastening nut is provided on the surface of the threaded shaft.

[0006] Preferably, a motor is fixedly mounted on the top of the base, a first bearing frame is fixedly mounted on the top of the base, an output shaft is fixedly connected to one output end of the motor, and the output shaft is movably arranged on the inner side of the first bearing frame.

[0007] Preferably, a first plug shaft is fixedly inserted into the surface of the output shaft, a second bearing frame is fixedly installed on the top of the base, and a main shaft body is movably inserted into the inner side of the second bearing frame.

[0008] Preferably, one end of the main shaft body is fixedly connected to a threaded shaft, and one end of the threaded shaft is fixedly connected to a connecting shaft.

[0009] Preferably, a second plug shaft is fixedly inserted on the surface of the connecting shaft, a sleeve is sleeved on the surface of the connecting shaft, a limiting hole is fixedly opened on the surface of the sleeve, and the second plug shaft is movably inserted inside the limiting hole.

[0010] Preferably, a connecting hole is fixedly opened at one end of the sleeve, a spring is sleeved on the surface of the threaded shaft, one end of the spring is movably connected to one end of the sleeve, a fastening nut is rotatably connected to the surface of the threaded shaft, and the other end of the spring is rotatably connected to one side of the fastening nut.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The provided sleeve, limiting hole, connecting hole, first plug-in shaft and second plug-in shaft facilitate installation and connection between the main shaft body and the output shaft, and also facilitate disassembly and separation, thereby improving the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the connection structure between the main shaft body and the output shaft of the utility model.

[0016] In the figure: 1. base; 2. motor; 3. first bearing frame; 4. output shaft; 5. sleeve; 6. second bearing frame; 7. main shaft body; 8. limit hole; 9. connecting hole; 10. first plug shaft; 11. second plug shaft; 12. threaded shaft; 13. spring; 14. fastening nut; 15. connecting shaft. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3The utility model provides a technical solution: a connection structure of a machine tool spindle, including a base 1, a motor 2 is provided on the top of the base 1, a first bearing frame 3 is provided on the top of the base 1, an output shaft 4 is provided at one end of the motor 2, a first plug shaft 10 is provided on the surface of the output shaft 4, a second bearing frame 6 is provided on the top of the base 1, a spindle body 7 is provided on the inner side of the second bearing frame 6, a threaded shaft 12 is provided at one end of the spindle body 7, a connecting shaft 15 is provided at one end of the threaded shaft 12, a second plug shaft 11 is provided on the surface of the connecting shaft 15, a sleeve 5 is provided on the surface of the connecting shaft 15, a limiting hole 8 is provided on the surface of the sleeve 5, a connecting hole 9 is provided at one end of the sleeve 5, a spring 13 is provided on the surface of the threaded shaft 12, and a fastening nut 14 is provided on the surface of the threaded shaft 12.

[0019] Specifically, a motor 2 is fixedly installed on the top of the base 1, a first bearing frame 3 is fixedly installed on the top of the base 1, an output end on one side of the motor 2 is fixedly connected with an output shaft 4, the output shaft 4 is movably arranged on the inner side of the first bearing frame 3, a first plug shaft 10 is fixedly inserted on the surface of the output shaft 4, a second bearing frame 6 is fixedly installed on the top of the base 1, a main shaft body 7 is movably arranged on the inner side of the second bearing frame 6, one end of the main shaft body 7 is fixedly connected with a threaded shaft 12, one end of the threaded shaft 12 is fixedly connected with a connecting shaft 15, and the connecting shaft 15 is fixedly connected with the connecting shaft 15. The surface of the connecting shaft 15 is fixedly plugged with the second plug shaft 11, the surface of the connecting shaft 15 is sleeved with a sleeve 5, the surface of the sleeve 5 is fixedly provided with a limiting hole 8, the second plug shaft 11 is movably inserted into the inner side of the limiting hole 8, one end of the sleeve 5 is fixedly provided with a connecting hole 9, the surface of the threaded shaft 12 is sleeved with a spring 13, one end of the spring 13 is movably connected to one end of the sleeve 5, the surface of the threaded shaft 12 is threadedly rotatably connected with a fastening nut 14, and the other end of the spring 13 is rotatably connected to one side of the fastening nut 14.

[0020] In this embodiment, when connecting the machine tool spindle body 7 and the output shaft 4 of the motor 2, the first bearing frame 3 and the second bearing frame 6 are first fixedly installed on the surface of the base 1, the output shaft 4 is rotated and penetrated through the inner side of the first bearing frame 3, the spindle body 7 is rotated and penetrated through the inner side of the second bearing frame 6, and then one end of the sleeve 5 is inserted into the surface of the output shaft 4. By rotating the fastening nut 14, the fastening nut 14 moves laterally on the surface of the threaded shaft 12, thereby causing a compressive force on the spring 13. At the same time, the spring 13 drives the connecting hole 9 at one end of the sleeve 5 to move to the outside of the first plug shaft 10. After the sleeve 5 moves on the surface of the connecting shaft 15 to the surface of the output shaft 4, the second plug shaft 11 is at the leftmost side of the limiting hole 8. When the motor 2 drives the output shaft 4 to rotate with the first plug shaft 10 on its surface, the connection effect between the first plug shaft 10 and the connecting hole 9 will drive the sleeve 5 to rotate. The rotation of the sleeve 5 drives the second plug shaft 11 and the connecting shaft 15 to rotate. The rotation of the connecting shaft 15 drives the threaded shaft 12 and the main shaft body 7 to rotate, thereby realizing the operation of the machine tool. When separation is required, rotate the fastening nut 14, the spring 13 will drive the sleeve 5 to reset, thereby separating the sleeve 5 and the output shaft 4.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A connection structure for a machine tool spindle, comprising a base (1), characterized in that: A motor (2) is provided on the top of the base (1), a first bearing frame (3) is provided on the top of the base (1), an output shaft (4) is provided at one end of the motor (2), a first plug shaft (10) is provided on the surface of the output shaft (4), a second bearing frame (6) is provided on the top of the base (1), a main shaft body (7) is provided on the inner side of the second bearing frame (6), a threaded shaft (12) is provided at one end of the main shaft body (7), a connecting shaft (15) is provided at one end of the threaded shaft (12), a second plug shaft (11) is provided on the surface of the connecting shaft (15), a sleeve (5) is provided on the surface of the connecting shaft (15), a limiting hole (8) is provided on the surface of the sleeve (5), a connecting hole (9) is provided at one end of the sleeve (5), a spring (13) is provided on the surface of the threaded shaft (12), and a fastening nut (14) is provided on the surface of the threaded shaft (12).

2. The connection structure of a machine tool spindle according to claim 1, characterized in that: A motor (2) is fixedly mounted on the top of the base (1), a first bearing frame (3) is fixedly mounted on the top of the base (1), an output end on one side of the motor (2) is fixedly connected to an output shaft (4), and the output shaft (4) is movably arranged on the inner side of the first bearing frame (3).

3. The connection structure of a machine tool spindle according to claim 1, characterized in that: A first plug shaft (10) is fixedly plugged into the surface of the output shaft (4), a second bearing frame (6) is fixedly mounted on the top of the base (1), and a main shaft body (7) is movably inserted into the inner side of the second bearing frame (6).

4. The connection structure of a machine tool spindle according to claim 1, characterized in that: One end of the main shaft body (7) is fixedly connected to a threaded shaft (12), and one end of the threaded shaft (12) is fixedly connected to a connecting shaft (15).

5. The connection structure of a machine tool spindle according to claim 1, characterized in that: The surface of the connecting shaft (15) is fixedly plugged with a second plug shaft (11), the surface of the connecting shaft (15) is sleeved with a sleeve (5), the surface of the sleeve (5) is fixedly provided with a limiting hole (8), and the second plug shaft (11) is movably plugged into the inner side of the limiting hole (8).

6. The connection structure of a machine tool spindle according to claim 1, characterized in that: A connection hole (9) is fixedly opened at one end of the sleeve (5); a spring (13) is sleeved and connected to the surface of the threaded shaft (12); one end of the spring (13) is movably connected to one end of the sleeve (5); a fastening nut (14) is threadedly rotatably connected to the surface of the threaded shaft (12); and the other end of the spring (13) is rotatably connected to one side of the fastening nut (14).

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