Oil-gas lubrication electric spindle of machine tool

Abstract

The utility model discloses an oil-gas lubrication motorized spindle of a machine tool, and particularly relates to the technical field of motorized spindles, which comprises a steel cylinder, a rotor is arranged in the steel cylinder, a cooling mechanism for cooling the rotor is arranged between the rotor and the steel cylinder, and a dustproof sleeve is arranged between the rotor and the steel cylinder; the dismounting mechanism is located between the steel cylinder and the dustproof sleeve, and the dismounting mechanism comprises a mounting sleeve arranged on the outer wall of the rotor in a sleeving mode and a groove cavity formed in one side of the steel cylinder; through the arrangement of the dismounting mechanism, the dustproof sleeve can be quickly dismounted and replaced, the problems that an existing dustproof sleeve rubs continuously, the dustproof effect is easily reduced, and the service life of the dustproof sleeve is shortened are solved, and the situation that the working environment and comfort of operators are affected due to noise increase caused by continuous friction is avoided; and meanwhile, the situation that the shutdown time of the machine tool and the maintenance cost are increased due to damage of the dustproof sleeve is not prone to occurring, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric spindles, in particular to an oil-gas lubricated electric spindle for a machine tool. Background Art

[0002] As the core component of the machining center, the electric spindle combines the machine tool spindle and the AC servo motor shaft into one, and has undergone precise dynamic balancing correction, so it has good rotation accuracy and stability. Machine tool oil and gas are usually used to lubricate the electric spindle for cooling and lubrication, so that the spindle and bearings are fully lubricated and cooled during operation, thereby maintaining better machining accuracy.

[0003] A Chinese patent application number CN202321512858.7 discloses an oil-gas lubricated electric spindle for a machine tool. The utility model improves the cooling effect of the rotor and the dustproof ring by setting a cooling mechanism, avoids the rotor and the displacement sensor from being offset and causing a decrease in the machining accuracy of the machine tool, and solves the problem of reduced accuracy of the spindle due to high temperature during operation. At the same time, oil cooling and water cooling are used for cooling respectively, which improves the cooling effect and avoids the displacement sensor from being offset and causing a decrease in accuracy due to high temperature. The dustproof effect of the spindle is greatly improved by setting a dustproof mechanism, which avoids debris, particles and dust from entering the bearing during the rotation of the spindle and affecting the rotation of the rotor. The dustproof ring is fixed by a fixed sleeve. The sealing effect of the dust ring is improved by cooperating with the sealing ring through the groove and the dust cover, thereby extending the service life of the spindle and enhancing the stability of the dust ring; however, the oil-gas lubricated electric spindle of the above-mentioned machine tool is fixed by the dust cover and the bottom of the retaining ring, so that the spindle in the working room can limit the entry of debris, particles and dust into the bearing to the greatest extent to affect the rotation of the rotor. However, during use, the dust cover is easily reduced in dustproof effect and shortened in service life due to continuous friction, making it difficult to disassemble and replace the dust cover, and continuous friction will cause increased noise, affecting the working environment and comfort of the operator. At the same time, damage to the dust cover will increase the downtime of the machine tool and the cost of maintenance, thereby reducing production efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide an oil-gas lubricated electric spindle for a machine tool. By setting a disassembly mechanism, the dust cover can be quickly disassembled and replaced, thereby solving the problem that the existing dust cover is constantly rubbed, which easily leads to reduced dustproof effect and shortened service life, and avoids the situation that continuous friction will cause increased noise and affect the working environment and comfort of the operator. At the same time, it is not easy to increase the downtime of the machine tool and the maintenance cost due to damage of the dust cover, thereby increasing the practicality of the device and solving the above-mentioned deficiencies in the technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a machine tool oil-gas lubricated electric spindle, comprising:

[0006] A steel cylinder, wherein a rotor is arranged inside the steel cylinder, a cooling mechanism for cooling the rotor is arranged between the rotor and the steel cylinder, and a dust cover is installed between the rotor and the steel cylinder;

[0007] The disassembly mechanism is located between the steel cylinder and the dust cover, and the disassembly mechanism includes a mounting sleeve sleeved on the outer wall of the rotor and a groove cavity opened on one side of the steel cylinder, a positioning sleeve is fixed on one side of the mounting sleeve, the positioning sleeve corresponds to the groove cavity, and a positioning mechanism for positioning the positioning sleeve is arranged between the positioning sleeve and the groove cavity, a sealing ring is installed between the mounting sleeve and the rotor, and the mounting sleeve is connected to the dust cover.

[0008] Preferably, the positioning mechanism comprises a positioning groove formed on the outer wall of the positioning sleeve and a groove body formed on the top of the groove cavity, a positioning plate is installed inside the groove body, and the positioning plate corresponds to the positioning groove.

[0009] Preferably, a squeezing mechanism for squeezing the positioning plate is provided between the positioning plate and the trough body, the squeezing mechanism includes a first spring connected between the positioning plate and the trough body and a connecting plate fixed on one side of the positioning plate, and a driving mechanism for driving the connecting plate to move is provided between the connecting plate and the steel cylinder.

[0010] Preferably, the driving mechanism includes an open slot provided on one side of the steel cylinder and a control block fixed on the top of the connecting plate, and the connecting plate cooperates with the open slot.

[0011] Preferably, the outer wall of the rotor is provided with a supporting mechanism for supporting the rotor when working, and the supporting mechanism includes a bearing installed on the outer wall of the rotor on the side opposite to the dust cover and a support seat arranged on the outer wall of the bearing, a storage shell is fixed to one side of the support seat, a support rod is arranged inside the storage shell, a flange is fixed to one side of the support rod, and a fixing mechanism for fixing the support rod is arranged between the storage shell and the support rod.

[0012] Preferably, the fixing mechanism includes a fixing plate fixed to the top of the storage shell and a groove opened at the top of the storage shell, a fixing block is arranged inside the groove, a fixing groove is opened at the top of the support rod, the fixing block cooperates with the fixing groove, and a movable rod is installed between the fixing block and the fixing plate, a second spring is connected between the fixing block and the fixing plate, and the second spring is sleeved on the outer wall of the movable rod.

[0013] Preferably, the cooling mechanism comprises a cooling oil chamber opened inside the steel cylinder and an oil inlet and an oil outlet opened at upper and lower ends of the cooling oil chamber respectively, and the cooling oil chamber cooperates with the rotor.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] 1. The utility model can realize the rapid disassembly and replacement of the dust cover by setting the disassembly mechanism, solves the problem that the existing dust cover is constantly rubbed, which easily leads to the reduction of dustproof effect and shortens its service life, avoids the situation that the continuous friction will cause the increase of noise, affect the working environment and comfort of the operator, and is not prone to the situation that the damage of the dust cover will increase the downtime of the machine tool and the maintenance cost, thereby increasing the practicality of the device;

[0016] 2. The utility model can support the rotor and reduce resonance through the setting of the supporting mechanism, thereby increasing rigidity and stability. By supporting the rotor, deformation can be reduced, the geometric shape and size of the rotor can be kept stable, the accuracy and consistency of the processing results can be ensured, the transmission efficiency and transfer efficiency of the rotor can be improved, and at the same time the wear of the bearing can be reduced, and the service life of the rotor and the bearing can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a cross-sectional view of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the disassembly mechanism of the utility model;

[0021] Figure 4 It is a cross-sectional view of the disassembly mechanism of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the support mechanism of the utility model;

[0023] Figure 6 It is a structural schematic diagram of the support mechanism of the utility model when it is disassembled.

[0024] Description of reference numerals:

[0025] 1. Steel cylinder; 2. Rotor; 3. Disassembly mechanism; 4. Support mechanism; 5. Dust cover;

[0026] 31. Mounting sleeve; 32. Positioning plate; 33. First spring; 34. Control block; 35. Positioning sleeve; 36. Sealing ring;

[0027] 41. Bearing; 42. Support seat; 43. Storage shell; 44. Fixing plate; 45. Support rod; 46. Second spring. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] The utility model provides Figure 1 and Figure 2 The oil-gas lubricated electric spindle for a machine tool shown in the figure comprises: a steel cylinder 1, a rotor 2 is arranged inside the steel cylinder 1, a cooling mechanism for cooling the rotor 2 is arranged between the rotor 2 and the steel cylinder 1, and a dust cover 5 is installed between the rotor 2 and the steel cylinder 1, the cooling mechanism comprises a cooling oil chamber opened inside the steel cylinder 1 and an oil inlet and an oil outlet respectively opened at the upper and lower ends of the cooling oil chamber, the cooling oil chamber cooperates with the rotor 2, and nuts are screwed inside the oil inlet and the oil outlet.

[0030] As can be seen from the above, when in use, first turn the nut of the oil inlet to open the oil inlet, and add oil and gas into the cooling oil chamber, so that the rotor 2 can be effectively cooled when running at high speed, thereby improving processing efficiency and precision. After cooling, turn the nut of the oil outlet to open the oil outlet. Through the opening of the oil outlet, the oil and gas inside the cooling oil chamber can be quickly discharged to prevent the accumulation of oil and gas in the cooling oil chamber. Finally, screw the two nuts into the oil inlet and the oil outlet respectively. When the rotor 2 is running at high speed, the dustproof effect of the rotor 2 can be improved by setting the dustproof cover 5.

[0031] refer to Figure 1-Figure 4As shown, the disassembly mechanism 3 is located between the steel cylinder 1 and the dust cover 5, and the disassembly mechanism 3 includes a mounting sleeve 31 sleeved on the outer wall of the rotor 2 and a groove cavity opened on one side of the steel cylinder 1, a positioning sleeve 35 is fixed to one side of the mounting sleeve 31, the positioning sleeve 35 corresponds to the groove cavity, and a positioning mechanism for positioning the positioning sleeve 35 is provided between the positioning sleeve 35 and the groove cavity, a sealing ring 36 is installed between the mounting sleeve 31 and the rotor 2, and the mounting sleeve 31 is connected to the dust cover 5, and the positioning mechanism includes a positioning groove opened on the outer wall of the positioning sleeve 35 and A slot body is opened at the top of the slot cavity, and a positioning plate 32 is installed inside the slot body. The positioning plate 32 corresponds to the positioning slot. An extrusion mechanism for extruding the positioning plate 32 is arranged between the positioning plate 32 and the slot body. The extrusion mechanism includes a first spring 33 connected between the positioning plate 32 and the slot body and a connecting plate fixed on one side of the positioning plate 32. A driving mechanism for driving the connecting plate to move is arranged between the connecting plate and the steel cylinder 1. The driving mechanism includes an open slot opened on one side of the steel cylinder 1 and a control block 34 fixed on the top of the connecting plate. The connecting plate cooperates with the open slot.

[0032] Through the above technical solution:

[0033] When in use, first pull the control block 34 to drive the connecting plate to move, so that the connecting plate moves in the open groove, and the movement of the connecting plate drives the positioning plate 32 to start moving, and the movement of the positioning plate 32 drives the first spring 33 to contract, and the contraction of the first spring 33 separates the positioning plate 32 from the positioning sleeve 35, and the mutual separation of the positioning plate 32 and the positioning sleeve 35 pulls the installation sleeve 31 to drive the positioning sleeve 35 to separate from the groove cavity, and the separation of the installation sleeve 31 from the groove cavity drives the synchronous movement of the dust cover 5, so that the dust cover 5 moves on the outer wall of the rotor 2 until the dust cover 5 is moved to separate from the rotor 2, so that the dust cover 5 can be quickly disassembled and replaced, which solves the problem that the existing dust cover 5 is constantly rubbed, which easily leads to reduced dustproof effect and shortened service life, and avoids the situation that continuous friction will cause increased noise and affect the working environment and comfort of the operator, thereby increasing the practicality of the device.

[0034] In addition, refer to Figure 1-Figure 6As shown, the outer wall of the rotor 2 is provided with a support mechanism 4 for supporting the rotor 2 when working, the support mechanism 4 includes a bearing 41 installed on the outer wall of the rotor 2 on the side opposite to the dust cover 5 and a support seat 42 arranged on the outer wall of the bearing 41, a storage shell 43 is fixed to one side of the support seat 42, a support rod 45 is arranged inside the storage shell 43, a flange is fixed to one side of the support rod 45, a fixing mechanism for fixing the support rod 45 is arranged between the storage shell 43 and the support rod 45, the fixing mechanism includes a fixing plate 44 fixed to the top of the storage shell 43 and a groove opened at the top of the storage shell 43, a fixing block is arranged inside the groove, a fixing groove is opened on the top of the support rod 45, the fixing block cooperates with the fixing groove, and a movable rod is installed between the fixing block and the fixing plate 44, a second spring 46 is connected between the fixing block and the fixing plate 44, and the second spring 46 is sleeved on the outer wall of the movable rod.

[0035] Through the above technical solution:

[0036] When in use, the flange is connected to the fixed point so that the support rod 45 is effectively supported, and then the movable rod is pulled to drive the fixed block to move upward, so that the fixed block moves in the groove, and the movement of the fixed block drives the second spring 46 to contract, and the contraction of the second spring 46 separates the fixed block from the storage shell 43, and then the support rod 45 is inserted into the storage shell 43, and the movable rod is released. The elastic force of the second spring 46 drives the fixed block to reset, so that the fixed block is inserted into the fixed groove, and the fixed block and the fixed groove are mutually connected, so that the rotor 2 can be supported during operation, the resonance phenomenon is reduced, thereby increasing rigidity and stability. By supporting the rotor 2, deformation can be reduced, ensuring the accuracy and consistency of the processing results, and at the same time improving the transmission efficiency of the rotor 2, reducing the wear of the bearing 41, and extending the service life of the rotor 2 and the bearing 41.

[0037] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A machine tool oil-gas lubricated electric spindle, characterized in that: include: A steel cylinder (1), wherein a rotor (2) is arranged inside the steel cylinder (1), a cooling mechanism for cooling the rotor (2) is arranged between the rotor (2) and the steel cylinder (1), and a dust cover (5) is installed between the rotor (2) and the steel cylinder (1); A disassembly mechanism (3) is located between the steel cylinder (1) and the dust cover (5), and comprises a mounting sleeve (31) sleeved on the outer wall of the rotor (2) and a groove cavity opened on one side of the steel cylinder (1); a positioning sleeve (35) is fixed on one side of the mounting sleeve (31); the positioning sleeve (35) corresponds to the groove cavity, and a positioning mechanism for positioning the positioning sleeve (35) is provided between the positioning sleeve (35) and the groove cavity; a sealing ring (36) is installed between the mounting sleeve (31) and the rotor (2), and the mounting sleeve (31) is connected to the dust cover (5).

2. The oil-gas lubricated electric spindle for machine tools according to claim 1, characterized in that: The positioning mechanism comprises a positioning groove formed on the outer wall of the positioning sleeve (35) and a groove body formed on the top of the groove cavity. A positioning plate (32) is installed inside the groove body, and the positioning plate (32) corresponds to the positioning groove.

3. The oil-gas lubricated electric spindle for machine tools according to claim 2, characterized in that: A squeezing mechanism for squeezing the positioning plate (32) is provided between the positioning plate (32) and the trough body, the squeezing mechanism comprising a first spring (33) connected between the positioning plate (32) and the trough body and a connecting plate fixed on one side of the positioning plate (32), and a driving mechanism for driving the connecting plate to move is provided between the connecting plate and the steel cylinder (1).

4. The oil-gas lubricated electric spindle for machine tools according to claim 3, characterized in that: The driving mechanism comprises an open slot formed on one side of the steel cylinder (1) and a control block (34) fixed on the top of the connecting plate, and the connecting plate matches the open slot.

5. The oil-gas lubricated electric spindle for machine tools according to claim 1, characterized in that: The outer wall of the rotor (2) is provided with a support mechanism (4) for supporting the rotor (2) when it is working, and the support mechanism (4) comprises a bearing (41) installed on the outer wall of the rotor (2) on the side opposite to the dust cover (5) and a support seat (42) arranged on the outer wall of the bearing (41), a storage shell (43) is fixed on one side of the support seat (42), a support rod (45) is arranged inside the storage shell (43), a flange is fixed on one side of the support rod (45), and a fixing mechanism for fixing the support rod (45) is arranged between the storage shell (43) and the support rod (45).

6. The oil-gas lubricated electric spindle for machine tools according to claim 5, characterized in that: The fixing mechanism comprises a fixing plate (44) fixed to the top of the storage shell (43) and a groove opened at the top of the storage shell (43), a fixing block is arranged inside the groove, a fixing groove is opened at the top of the support rod (45), the fixing block cooperates with the fixing groove, and a movable rod is installed between the fixing block and the fixing plate (44), a second spring (46) is connected between the fixing block and the fixing plate (44), and the second spring (46) is sleeved on the outer wall of the movable rod.

7. The oil-gas lubricated electric spindle for machine tools according to claim 1, characterized in that: The cooling mechanism comprises a cooling oil chamber opened inside the steel cylinder (1) and an oil inlet and an oil outlet opened at the upper and lower ends of the cooling oil chamber respectively, and the cooling oil chamber cooperates with the rotor (2).

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