Transfer mechanism for motorized spindle machining

Abstract

The utility model discloses a transshipment mechanism for motorized spindle machining, which comprises a central shaft and a bearing sleeve used for abutting against a motorized spindle, and is characterized in that a first groove is formed in the bearing sleeve, the bottom of the first groove is communicated with a second groove, an outer ring is arranged in the first groove, and a spring is fixedly arranged on the inner wall of the outer ring; the end, away from the outer ring, of the spring is fixedly connected with an inner ring, an abutting groove is annularly formed in the outer wall of the center shaft, the inner wall of the abutting groove penetrates through the inner ring and is tightly attached to the inner wall of the inner ring, a threaded ring groove is annularly formed in the outer wall of the abutting groove, and the inner wall of the threaded ring groove is in threaded connection with a locking ring used for abutting against the inner ring and the center shaft. The end cover and the bearing sleeve are correspondingly provided with a plurality of mounting holes and are locked through bolts and nuts penetrating through the mounting holes, the end face of the end cover is provided with a movable groove for the center shaft to penetrate through and swing, and the bearing sleeve can swing by a certain angle relative to the center shaft, so that the abutting end of the bearing sleeve is attached to the end face of the electric spindle, and the electric spindle is stably fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of electric spindle processing, and specifically relates to a loading mechanism for electric spindle processing. Background Technique

[0002] The electric spindle, with the foreign name hvct, is a new technology that integrates the machine tool spindle and the spindle motor in the field of numerical control machine tools. The spindle is a set of components, which includes the electric spindle itself and its accessories: the electric spindle, the high-frequency variable frequency device, the oil mist lubricator, the cooling device, the built-in encoder, the tool changing device, etc.

[0003] When processing the electric spindle, a loading mechanism is needed to rotate it for processing. One side of the loading mechanism clamps one end of the electric spindle through a rotating tooling fixture controlled by a motor, and the other side is tightened through the tightening end cover of the tightening mechanism. Since the end faces of some electric spindles are not completely perpendicular to the axis of the electric spindle, the tightening end of the tightening end cover cannot completely adhere to the end face of the electric spindle, resulting in unstable rotation fixation of the electric spindle. Content of the Utility Model

[0004] The purpose of the utility model is to provide a loading mechanism for electric spindle processing to solve the above technical problems.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A loading mechanism for electric spindle processing, including a central shaft and a bearing sleeve for tightening the electric spindle. A first groove is opened on the end face of the bearing sleeve away from the tightening end, and a second groove is communicated with the bottom of the first groove. An outer ring is arranged in the first groove, a spring is fixedly arranged on the inner wall of the outer ring, and one end of the spring away from the outer ring is fixedly connected with an inner ring. A tightening groove is annularly opened on the outer wall of the central shaft, and the inner wall of the tightening groove passes through the inner ring and is in close contact with the inner wall of the inner ring. A threaded ring groove is annularly opened on the outer wall of the tightening groove close to the second groove, and a locking ring for tightening the inner ring and the central shaft is threadedly connected to the inner wall of the threaded ring groove. A end cover for tightening the outer ring is installed on one side of the bearing sleeve away from the tightening end. The end cover and the bearing sleeve are correspondingly provided with a plurality of mounting holes and are locked through bolts and nuts passing through the mounting holes. An activity groove for the central shaft to pass through and swing is opened on the end face of the end cover.

[0006] Preferably, the first groove and the second groove are cylindrical grooves, the outer ring is in close contact with the inner wall of the first groove, and a plurality of springs are evenly arranged along the inner wall of the outer ring.

[0007] Preferably, a plurality of stabilizing rods are fixedly arranged in a ring on the inner wall of the first groove, and corresponding stabilizing grooves for the stabilizing rods to insert are opened on the end face of the outer ring.

[0008] Preferably, the locking ring includes a nut and an abutting ring. The end face of the nut is fixedly connected to the end face of the abutting ring. The nut is threadedly connected to the inner wall of the threaded ring groove. The abutting ring is rotatably connected to the inner wall of the threaded ring groove and abuts against the end face of the inner ring. The end face of the inner ring away from the abutting ring abuts against the end face of the inner wall of the abutting ring groove.

[0009] Preferably, a plurality of positioning grooves are evenly formed in the end face of the bearing sleeve close to the end cover, and a plurality of positioning blocks for inserting into the positioning grooves are fixedly provided on the corresponding end face of the end cover.

[0010] Preferably, the movable groove is in clearance fit with the central shaft, and there is a gap between the inner ring and the pressing end face of the end cover.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through the settings of the end cover, the first groove, the second groove, the outer ring, the inner ring, the spring, the locking ring, the movable groove, the abutting ring groove and the threaded ring groove, the bearing sleeve can swing around the central shaft by a certain angle, so that when the bearing sleeve has a certain angle offset on the end face of the motorized spindle, it can still swing and closely adhere to the end face of the motorized spindle, improving the stability of the abutting and fixing of the motorized spindle; Through the settings of the positioning groove and the positioning block, it is convenient for the installation of the bearing sleeve and the end cover. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0013] Figure 1 is a cross-sectional view of this embodiment;

[0014] Figure 2 is a schematic diagram of this embodiment from one angle;

[0015] Figure 3 is a schematic diagram of this embodiment from another angle.

[0016] In the drawings, the list of components represented by each reference numeral is as follows:

[0017] 1. Central shaft; 2. Bearing sleeve; 3. End cover; 4. First groove; 5. Second groove; 6. Outer ring; 7. Spring; 8. Inner ring; 9. Locking ring; 91. Nut; 92. Abutting ring; 10. Stable groove; 11. Stable rod; 12. Movable groove; 13. Positioning groove; 14. Positioning block; 15. Mounting hole; 16. Abutting ring groove; 17. Threaded ring groove. Detailed Embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0019] Please refer to Figures 1 - 3 , the present invention provides a technical solution: a transfer mechanism for electric spindle machining, including a central shaft 1 and a bearing sleeve 2 for pressing against the electric spindle. A first groove 4 is opened on the end face of the bearing sleeve 2 away from the pressing end, and a second groove 5 is communicated and opened at the bottom of the first groove 4. An outer ring 6 is arranged in the first groove 4, a spring 7 is fixedly arranged on the inner wall of the outer ring 6, and one end of the spring 7 away from the outer ring 6 is fixedly connected to an inner ring 8. An abutting groove 16 is annularly opened on the outer wall of the central shaft 1, and the inner wall of the abutting groove 16 passes through the inner ring 8 and is in close contact with the inner wall of the inner ring 8. A threaded ring groove 17 is annularly opened on the outer wall of the abutting groove 16 close to the second groove 5, and a locking ring 9 for pressing the inner ring 8 and the central shaft 1 is threadedly connected to the inner wall of the threaded ring groove 17. A end cover 3 for pressing the outer ring 6 is installed on one side of the bearing sleeve 2 away from the pressing end. The end cover 3 and the bearing sleeve 2 are correspondingly provided with a plurality of mounting holes 15 and are locked by bolts and nuts passing through the mounting holes 15. An activity groove 12 for the central shaft 1 to pass through and swing is opened on the end face of the end cover 3.

[0020] Specifically, the first groove 4 and the second groove 5 are cylindrical grooves, and the outer ring 6 is in close contact with the inner wall of the first groove 4, ensuring that the outer ring 6 can be stably fixed in the first groove 4. A plurality of springs 7 are uniformly arranged along the inner wall of the outer ring 6, so that the inner ring 8 is stably affected by the force of the spring 7, improving the stability of the inner ring 8.

[0021] Specifically, a plurality of stabilizing rods 11 are fixedly arranged in a ring on the inner wall of the first groove 4, and corresponding stabilizing grooves 10 for the stabilizing rods 11 to be inserted are opened on the end face of the outer ring 6. By inserting the stabilizing rods 11 into the stabilizing grooves 10, the outer ring 6 is stably fixed in the first groove 4 without rotation.

[0022] Specifically, the locking ring 9 includes a nut 91 and a pressing ring 92. The end face of the nut 91 is fixedly connected to the end face of the pressing ring 92. The nut 91 is threadedly connected to the inner wall of the threaded ring groove 17, and the pressing ring 92 is rotatably connected to the inner wall of the threaded ring groove 17 and abuts against the end face of the inner ring 8. The end face of the inner ring 8 away from the pressing ring 92 abuts against the end face of the inner wall of the abutting ring groove 16. When fixing the central shaft 1 and the inner ring 8, the inner ring 8 is passed through the abutting ring groove 16 and abuts against the end face of the inner wall of the abutting ring groove 16, and then the nut 91 is screwed into the threaded ring groove 17 so that the pressing ring 92 presses the end faces of the inner ring 8 and the inner wall of the abutting ring groove 16 tightly, thereby completing the fixation of the central shaft 1 and the inner ring 8.

[0023] Specifically, a plurality of positioning grooves 13 are evenly formed on the end face of the bearing sleeve 2 close to the end cover 3, and a plurality of positioning blocks 14 for inserting into the positioning grooves 13 are fixedly arranged on the corresponding end face of the end cover 3. When installing the end cover 3, align the positioning blocks 14 of the end cover 3 with the positioning grooves 13 of the bearing sleeve 2 and insert them until the end cover 3 is in tight contact with the bearing sleeve 2. At this time, the mounting holes 15 on the bearing sleeve 2 and the mounting holes 15 on the end cover 3 are in one-to-one correspondence, facilitating the bolt and nut to pass through the mounting holes 15 to lock the bearing sleeve 2 and the end cover 3.

[0024] Specifically, the movable groove 12 is in clearance fit with the central shaft 1, and there is a gap between the inner ring 8 and the pressing end face of the end cover 3, enabling the bearing sleeve 2 to swing around the central shaft 1 by a certain angle.

[0025] A specific application embodiment of this embodiment is as follows:

[0026] When this device is in use, fix the central shaft 1 and the inner ring 8, pass the inner ring 8 through the abutting ring groove 16 and make it abut against the inner wall end face of the abutting ring groove 16. Then, screw the nut 91 into the threaded ring groove 17 so that the abutting ring 92 presses the inner ring 8 against the inner wall end face of the abutting ring groove 16, thereby completing the fixation of the central shaft 1 and the inner ring 8. Slide the inner ring 8 and the outer ring 6 into the first groove 4 and make the locking ring 9 enter the second groove 5. The outer ring 6 slides tightly against the inner wall of the first groove 4 and inserts the stabilizing groove 10 of the outer ring 6 into the stabilizing rod 11, ensuring the stable installation of the outer ring 6. Pass the movable groove 12 of the end cover 3 through the central shaft 1, align the positioning blocks 14 of the end cover 3 with the positioning grooves 13 of the bearing sleeve 2 and insert them until the end cover 3 is in tight contact with the bearing sleeve 2. The end cover 3 presses against the outer ring 6. At this time, the mounting holes 15 on the bearing sleeve 2 and the mounting holes 15 on the end cover 3 are in one-to-one correspondence, facilitating the bolt and nut to pass through the mounting holes 15 to lock the bearing sleeve 2 and the end cover 3, completing the installation. When there is a gap between the central shaft 1 and the movable groove 12 and a gap between the inner ring 8 and the pressing end face of the end cover 3, the inner ring 8 can be offset by compressing one side of the spring 7 under force and drive the central shaft 1 to offset, enabling the bearing sleeve 2 to swing around the central shaft 1 by a certain angle. Rotate the end of the central shaft 1 away from the bearing sleeve 2 through a bearing and set it on the tooling and keep it coaxial with the rotating tooling fixture (this is the prior art). The rotating tooling fixture clamps one side of the electric spindle, and the other side of the electric spindle moves the tooling to press the end face of the bearing sleeve 2 against the other end face of the electric spindle. The bearing sleeve 2 can swing around the central shaft 1 by a certain angle, enabling the bearing sleeve 2 to fit the end face of a somewhat skewed electric spindle, thereby improving the stability of pressing and fixing the electric spindle.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is the orientation or positional relationship based on the drawings, and 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 therefore should not be construed as a limitation to the present utility model.

[0028] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "setting", "connection", "fixation", "swivel connection", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that these embodiments can be modified without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A transfer mechanism for electric spindle machining, comprising a center shaft (1) and a bearing sleeve (2) for pressing against the electric spindle, characterized in that: The end surface of the bearing sleeve (2) away from the abutting end is provided with a first groove (4), the bottom of the first groove (4) is connected to a second groove (5), an outer ring (6) is provided in the first groove (4), a spring (7) is fixedly provided on the inner wall of the outer ring (6), an end of the spring (7) away from the outer ring (6) is fixedly connected to the inner ring (8), the outer wall ring of the central shaft (1) is provided with a abutting groove (16), the inner wall of the abutting groove (16) passes through the inner ring (8) and is in close contact with the inner wall of the inner ring (8), and the abutting groove (16) is close to the first groove (4). A threaded ring groove (17) is formed on the outer wall ring of one end of the second groove (5); a locking ring (9) for tightening the inner ring (8) and the central shaft (1) is threadedly connected to the inner wall of the threaded ring groove (17); an end cover (3) for tightening the outer ring (6) is installed on the side of the bearing sleeve (2) away from the tightening end; a plurality of mounting holes (15) are formed on the end cover (3) and the bearing sleeve (2) respectively and are locked by passing bolts and nuts through the mounting holes (15); and a movable groove (12) for the central shaft (1) to swing through is formed on the end surface of the end cover (3).

2. The transfer mechanism for electric spindle machining according to claim 1, characterized in that: The first groove (4) and the second groove (5) are cylindrical grooves, the outer ring (6) is in close contact with the inner wall of the first groove (4), and a plurality of springs (7) are evenly arranged along the inner wall of the outer ring (6).

3. The transfer mechanism for electric spindle machining according to claim 1, characterized in that: The inner wall fixing ring of the first groove (4) is provided with a plurality of stabilizing rods (11), and the end surface of the outer ring (6) is correspondingly provided with a stabilizing groove (10) for inserting the stabilizing rods (11).

4. The transfer mechanism for electric spindle machining according to claim 1, characterized in that: The locking ring (9) comprises a nut (91) and a locking ring (92); an end face of the nut (91) is fixedly connected to an end face of the locking ring (92); the nut (91) is threadedly connected to an inner wall of a threaded ring groove (17); the locking ring (92) is rotatably connected to the inner wall of the threaded ring groove (17) and abuts against an end face of an inner ring (8); an end face of the inner ring (8) away from the locking ring (92) abuts against an end face of an inner wall of the locking ring groove (16).

5. The transfer mechanism for electric spindle machining according to claim 1, characterized in that: The end surface of the bearing sleeve (2) close to the end cover (3) is evenly provided with a plurality of positioning grooves (13), and the end surface of the end cover (3) is correspondingly fixedly provided with a plurality of positioning blocks (14) for inserting into the positioning grooves (13).

6. The transfer mechanism for electric spindle machining according to claim 1, characterized in that: The movable groove (12) is clearance-matched with the central shaft (1), and a clearance exists between the inner ring (8) and the pressing end surface of the end cover (3).

Images