Automatic material clamping and returning device of magnetic material hole machining motorized spindle

Abstract

The utility model relates to the technical field of magnetic material machining, in particular to an automatic material clamping and returning device of a magnetic material hole machining motorized spindle. Comprising a hollow spindle (1), a pull tube (2), an elastic chuck (3), a first power mechanism and a spindle (1), wherein the pull tube (2) is arranged in the spindle (1) in a penetrating manner and is in axial sliding fit with the spindle (1); the elastic chuck (3) is arranged at one end of the spindle (1), is connected with one end of the pull tube (2) and is used for clamping or loosening a workpiece (4); the first power mechanism is positioned outside the other end of the spindle (1) and is used for pushing the pull tube (2) to axially move in the spindle (1); one end of the pull pipe (2) is used for clamping a workpiece (4), the other end of the pull pipe (2) is used for resetting a resetting mechanism for resetting the position of the pull pipe (2), an ejection piece used for ejecting the workpiece (4) out of the elastic chuck (3) is arranged in the pull pipe (2), and a second power mechanism used for providing power for the ejection piece is further arranged at the other end of the pull pipe (2). By the adoption of the device, materials can be conveniently returned after workpieces are machined.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic material processing, in particular to an automatic material clamping and unloading device for an electric spindle for processing a magnetic material hole. Background Art

[0002] The domestic magnetic material processing industry has been developing at an increasingly faster pace since the 1990s, and various equipment dedicated to the processing of the above materials has also been continuously improved and innovated.

[0003] When processing a magnetic material workpiece, a clamping device is required to clamp the magnetic material workpiece and then drive the magnetic material workpiece to rotate. For example, the Chinese utility model patent with publication number CN 219945935 U applied by the applicant on June 7, 2023 can clamp the magnetic material workpiece to be processed through an elastic chuck, and then drive the magnetic material workpiece to rotate for processing. However, this structure cannot conveniently withdraw the material after the workpiece is processed. Utility Model Content

[0004] The technical solution to be solved by the utility model is to provide an automatic clamping and unloading device for an electric spindle for processing a magnetic material hole. The device can be used to conveniently unload the material after the workpiece is processed.

[0005] The technical solution adopted by the utility model is: an automatic clamping and unloading device for an electric spindle for processing holes in magnetic materials, comprising a hollow spindle, a draw tube inserted in the spindle and slidably matched with the spindle axially, an elastic chuck arranged at one end of the spindle and connected to one end of the draw tube for clamping or loosening the workpiece, a first power mechanism located outside the other end of the spindle for pushing the draw tube to move axially in the spindle, and a reset mechanism located on the other end of the spindle for resetting the position of the draw tube, an ejector for ejecting the workpiece from the elastic chuck is arranged in the draw tube, and a second power mechanism for providing power to the ejector is also arranged at the other end of the draw tube.

[0006] Preferably, the ejector comprises a material ejector rod arranged in the elastic chuck, a guide rod with one end connected to one end of the material ejector rod, a guide sleeve arranged in the pull tube and sleeved on the outside of the guide rod, a tube pull rod with one end connected to the other end of the guide rod, a return spring sleeved on the tube pull rod and a spring positioning sleeve fixed on the tube pull rod, one end of the return spring abuts against the spring positioning sleeve, and the other end of the return spring abuts against the guide sleeve.

[0007] Preferably, the material ejector rod is threadedly connected to the guide rod.

[0008] Preferably, the guide rod is a non-rotating body, a through hole for the guide rod to pass through is arranged in the middle of the guide sleeve, and the cross section of the through hole matches the cross section shape of the guide rod.

[0009] Preferably, the second power mechanism is a material-returning cylinder, and the piston of the material-returning cylinder can push the tube-pulling ejector rod when it moves.

[0010] Preferably, the reset mechanism includes a disc spring seat, a disc spring sheet, a locking nut and a limit ring, the locking nut is sleeved on the other end of the pull tube, the disc spring seat is sleeved on the other end of the main shaft, the limit ring is arranged on the disc spring seat and a receiving groove is formed between the disc spring seat and the disc spring seat, the disc spring sheet is arranged in the receiving groove and a part of it extends out of the receiving groove, one end of the disc spring sheet extending out of the receiving groove abuts against the other end of the main shaft, the other end of the elastic member extending out of the receiving groove abuts against the locking nut, and the limit ring is provided with a protrusion for abutting the locking nut.

[0011] Preferably, the first power mechanism is a feeding cylinder, and the piston of the feeding cylinder can push the locking nut when it moves.

[0012] Preferably, an opening is provided in the middle of the piston of the feeding cylinder, and the piston of the withdrawing cylinder is arranged in the opening.

[0013] Preferably, it also includes a push cylinder for pushing the workpiece into the elastic chuck.

[0014] Compared with the prior art, the utility model has the following advantages: an ejector and a second power mechanism are provided, so that the ejector can be driven by the second power mechanism to eject the processed workpiece, which makes it more convenient to withdraw the material.

[0015] With this type of ejector structure, the second power mechanism only needs to push the tube ejector pin to push the front ejector pin to eject the finished workpiece. Then, under the action of the reset spring, the ejector pin will automatically reset, making material removal more convenient and quick.

[0016] The ejector rod is threadedly connected to the guide rod, so that different ejector rods can be replaced when processing different workpieces, which has higher adaptability.

[0017] The guide rod is made into a non-rotating body, and the guide rod is limited circumferentially by a guide sleeve, so that when the ejector rod is rotated, the guide rod will not rotate together, so the ejector rod can be removed from the guide rod conveniently and quickly.

[0018] The material-returning cylinder is used as the second power mechanism, which can conveniently push the tube-pulling ejector rod to realize the function of pushing the workpiece out.

[0019] This structure is used as the reset mechanism, which has a relatively simple structure and a good reset effect. It only needs to use the disc spring to provide a reset force to the locking nut, so that the pull tube can be reset well, and a limit ring is set to effectively limit the position to which the pull tube is reset.

[0020] The feeding cylinder is used as the first power mechanism, so that the clamping or loosening of the elastic clamp can be conveniently controlled.

[0021] The piston of the material-returning cylinder is arranged in the opening on the piston of the material-feeding cylinder, so that the overall occupied volume is small and there will be no mutual interference during operation.

[0022] A material pushing cylinder is provided so that the workpiece can be pushed into the elastic chuck by the material pushing cylinder during feeding, which is convenient to use and has high working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The diagram is a schematic diagram of the structure of an electric spindle for machining holes in magnetic materials.

[0024] Figure 2 yes Figure 1 Cross-sectional view after removing the ejector cylinder and workpiece.

[0025] Figure 3 yes Figure 2 A magnified schematic diagram of center A.

[0026] Among them, 1. spindle; 2. pulling tube; 3. elastic chuck; 4. workpiece; 5. ejector rod; 6. guide rod; 7. pulling tube ejector rod; 8. reset spring; 9. spring positioning sleeve; 10. guide sleeve; 11. ejector cylinder; 12. disc spring seat; 13. disc spring sheet; 14. locking nut; 15. limit ring; 16. accommodating groove; 17. raised part; 18. feeding cylinder; 19. ejector cylinder. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] Embodiment 1:

[0029] An automatic clamping and unloading device for an electric spindle for processing holes in magnetic materials comprises an electric spindle, a drawing tube 2, an elastic chuck 3, a first power mechanism, a reset mechanism, a second power mechanism and an ejector, wherein:

[0030] The electric spindle mainly includes a hollow spindle 1, a rotor, a stator and a housing. Since this is a product of the prior art, it is not described in detail here.

[0031] The pull tube 2 is inserted into the main shaft 1 and slidably cooperates with the main shaft 1 in the axial direction, that is, the pull tube 2 can move forward and backward in the axial direction of the main shaft 1, and its front end is connected to the elastic chuck 3, and its rear end extends out of the main shaft 1;

[0032] The elastic chuck 3 is arranged at one end of the spindle 1, and includes a head with an outer conical surface and a long groove opened along the axial direction to form a clamping jaw that can contract centripetally, and an inner hole adapted to the shape of the clamped workpiece 4 is formed in the middle of the clamping jaw, and the elastic chuck 3 is connected to one end of the draw tube 2, so that the draw tube 2 can drive the elastic chuck 3 to move axially, and the deformation of the clamping jaw makes the inner hole smaller or larger, so as to achieve the clamping and loosening of the workpiece 4. This is a relatively conventional elastic chuck 3 for machine tools in the prior art, so it is not elaborated in detail here;

[0033] The reset mechanism includes a disc spring seat 12, a disc spring sheet 13, a locking nut 14 and a limit ring 15, wherein:

[0034] The disc spring seat 12 is fixed to the other end of the main shaft 1 and can move with the main shaft 1;

[0035] The limit retaining ring 15 is fixed on the inner side of the disc spring seat 12, and a receiving groove 16 is formed between the limit retaining ring 15 and the reset seat. The receiving groove 16 is annular, and a protrusion 17 is formed on the limit retaining ring 15 extending toward the main shaft 1, that is, the protrusion 17 and the limit retaining ring 15 are integrally formed;

[0036] The locking nut 14 is fixed to the other end of the pull tube 2 and matches with the protrusion 17, and acts as a limit block. The most extreme position when the pull tube 2 moves outward is the position where the locking nut 14 abuts against the protrusion 17.

[0037] The disc spring 13 has a portion of its upper portion accommodated in the accommodating groove 16, and its lower portion extends out of the accommodating groove 16, and one side of the lower portion abuts against the end surface of the other side of the main shaft 1, and the other side of the lower portion abuts against one side of the locking nut 14, so that the disc spring 13 provides a restoring force for the pull tube 2;

[0038] The first power mechanism is a feeding cylinder 18, which can push the locking nut 14 when working, thereby pushing the pull tube 2 forward, thereby loosening the elastic chuck 3;

[0039] The ejector comprises a material ejector rod 5, a guide rod 6, a guide sleeve 10, a tube pulling ejector rod 7, a reset spring 8 and a spring positioning sleeve 9. The material ejector rod 5 is slidably connected in the inner hole of the elastic chuck 3 and can slide in the inner hole. The front end of the material ejector rod 5 is used to abut against the workpiece 4. The rear end of the material ejector rod 5 is threadedly connected to the front end of the guide rod 6. The front end of the tube pulling ejector rod 7 is threadedly connected to the rear end of the guide rod 6. The guide sleeve 10 is threadedly connected to the inside of the tube pulling 2 and is sleeved on the guide rod 6 to play a guiding function. The spring positioning sleeve 9 is fixed to the middle part of the tube pulling ejector rod 7 by a locking member. The reset spring 8 is sleeved on the tube pulling ejector rod 7, and one end abuts against the spring positioning sleeve 9, and the other end abuts against the guide sleeve 10.

[0040] The second power mechanism is the material-removing cylinder 11, which can push the ejector rod of the tube drawing 2 when working, and then push the ejector rod 5 forward to push the workpiece 4 out of the elastic chuck 3;

[0041] The working principle of this embodiment is: first, the feeding cylinder 18 works to push the pull tube 2 forward to open the elastic chuck 3 and put in the workpiece 4, and then the pull tube 2 is reset under the action of the disc spring 13. At this time, the workpiece 4 is clamped by the elastic chuck 3, and then the spindle 1 drives the workpiece 4 to rotate to process the workpiece 4. After the processing is completed, the feeding cylinder 18 continues to work to open the elastic chuck 3, and then the material return cylinder 11 works to push the pull tube push rod 7 and the material return push rod 5 forward to eject the workpiece 4 from the elastic chuck 3. After the workpiece 4 is ejected, the pull tube push rod 7 and the material return push rod 5 will be reset under the action of the reset spring 8.

[0042] Embodiment 2:

[0043] The difference from the first embodiment is that the cross-section of the guide rod 6 in the second embodiment is a hexagon, that is, the guide rod 6 is a non-rotating body, and the cross-section of the through hole on the guide sleeve 10 for the guide rod 6 to pass through is also a hexagon. In this way, when the material ejector rod 5 needs to be replaced, the material ejector rod 5 can be rotated. At this time, the guide rod 6 will be circumferentially limited by the guide sleeve 10, that is, the guide rod 6 will not rotate, so that the material ejector rod 5 can be conveniently removed and replaced.

[0044] Embodiment three:

[0045] The difference from the first embodiment is that the third embodiment is further provided with a push-up cylinder 19, so that the workpiece 4 can be sent into the missile chuck 3 through the push-up cylinder 19, thereby improving the overall work efficiency.

[0046] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

[0047] For those skilled in the art, various changes and modifications will undoubtedly be obvious after reading the above description. Therefore, the attached claims should be regarded as covering all changes and modifications to the true intent and scope of the utility model. Any and all equivalent ranges and contents within the scope of the claims should be considered to still be within the intent and scope of the utility model.

Claims

1. An automatic clamping and unloading device for an electric spindle for processing holes in magnetic materials, comprising a hollow spindle (1), a draw tube (2) inserted into the spindle (1) and axially slidingly matched with the spindle (1), an elastic chuck (3) arranged at one end of the spindle (1) and connected to one end of the draw tube (2) for clamping or releasing a workpiece (4), a first power mechanism located outside the other end of the spindle (1) for pushing the draw tube (2) to move axially in the spindle (1), and a reset mechanism located on the other end of the spindle (1) for resetting the position of the draw tube (2), characterized in that: An ejector for ejecting a workpiece (4) from the elastic chuck (3) is arranged in the pull tube (2), and a second power mechanism for providing power to the ejector is also arranged at the other end of the pull tube (2).

2. The automatic clamping and unloading device for the electric spindle for processing holes in magnetic materials according to claim 1 is characterized by: The ejector member comprises a material ejector rod (5) arranged in an elastic chuck (3), a guide rod (6) one end of which is connected to the other end of the material ejector rod (5), a guide sleeve (10) arranged in the draw tube (2) and sleeved on the outside of the guide rod (6), a draw tube ejector rod (7) one end of which is connected to the other end of the guide rod (6), a return spring (8) sleeved on the draw tube ejector rod (7), and a spring positioning sleeve (9) fixed on the draw tube ejector rod (7), one end of the return spring (8) being in contact with the spring positioning sleeve (9), and the other end of the return spring (8) being in contact with the guide sleeve (10).

3. The automatic clamping and unloading device for the electric spindle for processing holes in magnetic materials according to claim 2 is characterized by: The material ejector rod (5) is threadedly connected to the guide rod (6).

4. The automatic clamping and unloading device for the electric spindle for processing holes in magnetic materials according to claim 3 is characterized by: The guide rod (6) is a non-rotating body, and a through hole for the guide rod (6) to pass through is arranged in the middle of the guide sleeve (10), and the cross section of the through hole matches the cross section shape of the guide rod (6).

5. The automatic clamping and unloading device for the electric spindle for processing magnetic material holes according to claim 2 is characterized by: The second power mechanism is a material-returning cylinder (11), and the piston of the material-returning cylinder (11) can push the tube-drawing push rod (7) when it moves.

6. The automatic clamping and unloading device for the electric spindle for processing holes in magnetic materials according to claim 5 is characterized by: The reset mechanism comprises a disc spring seat (12), a disc spring sheet (13), a locking nut (14) and a limit retaining ring (15); the locking nut (14) is sleeved on the other end of the pull tube (2); the disc spring seat (12) is sleeved on the other end of the main shaft (1); the limit retaining ring (15) is arranged on the disc spring seat (12) and a receiving groove (16) is formed between the disc spring seat (12) and the disc spring seat (12); the disc spring sheet (13) is arranged in the receiving groove (16) and a part of it extends out of the receiving groove (16); one end of the disc spring sheet (13) extending out of the receiving groove (16) abuts against the other end of the main shaft (1); the other end of the elastic member extending out of the receiving groove (16) abuts against the locking nut (14); and the limit retaining ring (15) is provided with a protrusion (17) for abutting against the locking nut (14).

7. The automatic clamping and unloading device for the electric spindle for processing holes in magnetic materials according to claim 6 is characterized by: The first power mechanism is a feeding cylinder (18), and the piston of the feeding cylinder (18) can push the locking nut (14) when it moves.

8. The automatic clamping and unloading device for the electric spindle for processing holes in magnetic materials according to claim 7 is characterized by: An opening is arranged in the middle of the piston of the feeding cylinder (18), and the piston of the withdrawing cylinder (11) is arranged in the opening.

9. The automatic clamping and unloading device for the electric spindle for processing holes in magnetic materials according to claim 8 is characterized by: It also includes a push cylinder (19) for pushing the workpiece (4) into the elastic chuck (3).

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