CN222404585U - Clamping and positioning device for electric spindle for processing magnetic material holes - Google Patents

Abstract

The utility model relates to the technical field of magnetic material processing, in particular to a clamping and positioning device of an electric spindle for magnetic material hole processing. The device comprises a hollow main shaft (1), a pull tube (2) which is arranged in the main shaft (1) in a penetrating way and is in axial sliding fit with the main shaft (1), an elastic chuck (3) which is arranged at one end of the main shaft (1) and is connected with one end of the pull tube (2) for clamping or loosening a workpiece (4), and a buffer mechanism which is arranged in the main shaft (1) and is used for propping against the workpiece (4) entering the elastic chuck (3). The clamping and positioning device can well prevent the magnetic material workpiece from being jacked too much.

Description

Clamping and positioning device for electric spindle for processing magnetic material holes

Technical Field

The utility model relates to the technical field of magnetic material processing, in particular to a clamping and positioning device of an electric spindle for magnetic material hole processing.

Background

The domestic magnetic material processing industry has developed from the 90 s of the last century to the present, the development speed is faster and faster, and various devices special for the material processing are also continuously improved and innovated.

When the magnetic material workpiece is processed, a clamping device is needed to clamp the magnetic material workpiece, and then the magnetic material workpiece is driven to rotate, for example, the inventor applies for Chinese patent publication No. CN 219945935U in 2023, 6 and 7, and the Chinese patent can clamp the magnetic material workpiece to be processed through the elastic chuck, but when the magnetic material workpiece is jacked into the elastic chuck through the jacking cylinder, because other positioning devices are not arranged in the elastic chuck, the magnetic material workpiece can be jacked too much, and the processing precision of the magnetic material workpiece is poor.

Disclosure of utility model

The clamping and positioning device for the electric spindle for machining the magnetic material holes has the technical scheme that the clamping and positioning device can well prevent the magnetic material workpieces from being jacked too much.

The technical scheme includes that the clamping and positioning device of the electric spindle for machining the magnetic material holes comprises a hollow spindle, a pull tube penetrating through the spindle and axially matched with the spindle in a sliding mode, an elastic chuck arranged at one end of the spindle and connected with one end of the pull tube for clamping or loosening a workpiece, and a buffer mechanism arranged inside the spindle and used for propping against the workpiece entering the elastic chuck.

Preferably, the buffer mechanism comprises a material returning ejector rod which is connected inside the elastic chuck in a sliding way and is used for propping against a workpiece entering the elastic chuck, and an elastic assembly which is used for providing a restoring force for the material returning ejector rod.

Preferably, the elastic component comprises a guide rod, a pull pipe ejector rod, a reset spring, a spring positioning sleeve and a sliding sleeve, wherein one end of the guide rod is connected to one end of the return ejector rod, one end of the pull pipe ejector rod is connected to the other end of the guide rod, the reset spring is sleeved on the pull pipe ejector rod, the spring positioning sleeve is fixed on the pull pipe ejector rod, the sliding sleeve is arranged at the other end of the pull pipe, one end of the reset spring is propped against the spring positioning sleeve, and the other end of the reset spring is propped against the sliding sleeve.

Preferably, the material returning ejector rod is in threaded connection with the guide rod.

Preferably, the guide rod is a non-rotating body, and further comprises an anti-rotation sleeve which is fixed in the pull tube and sleeved outside the guide rod for preventing the guide rod from rotating.

Preferably, the cross section of the guide rod is hexagonal, a through hole for the guide rod to pass through is formed in the middle of the anti-rotation sleeve, and the cross section of the through hole is hexagonal matched with the guide rod.

Preferably, the tube pulling ejector rod is provided with a perforation, the spring positioning sleeve is provided with a mounting hole, and the spring positioning sleeve is locked on the tube pulling ejector rod through a locking piece penetrating through the mounting hole and the perforation.

Compared with the prior art, the utility model has the advantages that the buffer mechanism is arranged in the main shaft, so that a workpiece can be propped against the buffer mechanism after entering the elastic chuck, the workpiece can only enter the ejection stroke of the ejection cylinder, and can not enter the elastic chuck too much, and the whole processing accuracy and consistency of the workpiece are higher.

The buffer mechanism is formed by combining the material returning ejector rod and the elastic component, so that the workpiece is propped by the material returning ejector rod after entering a certain position of the elastic chuck, then the workpiece can move against the material returning ejector rod, and the elastic component can always provide restoring force for the material returning ejector rod until the stroke of the material ejecting cylinder is completed, and the workpiece can be well prevented from entering the elastic chuck too much.

By adopting the elastic component with the structure, the return force of the pull tube ejector rod can be well given through the return spring, and then the buffer function can be well realized.

The material returning ejector rod is in threaded connection with the guide rod, so that the adaptive material returning ejector rod can be replaced according to different workpieces.

The guide rod is used as a non-rotating body, and then an anti-rotating sleeve is arranged, so that the guide rod can not rotate when the material returning ejector rod rotates, and the material returning ejector rod can be conveniently detached from the guide rod.

The cross section of the material returning ejector rod is made into a hexagon, so that the processing is convenient, and the anti-rotation effect is good.

The spring positioning sleeve is installed by adopting the structure, so that the installation is convenient, and the spring positioning sleeve is fixed firmly.

Drawings

Fig. 1 is a schematic structural diagram of an electric spindle for processing holes in magnetic materials.

Fig. 2 is a cross-sectional view of fig. 1 with the ejector cylinder and workpiece removed.

Wherein, 1, a main shaft; 2, tube pulling, 3, an elastic chuck, 4, a workpiece, 5, a material returning ejector rod, 6, a guide rod, 7, a tube pulling ejector rod, 8, a return spring, 9, a spring positioning sleeve, 10, a sliding sleeve, 11, an anti-rotation sleeve, 12 and a material ejecting cylinder.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

Embodiment one:

The utility model provides a clamping positioner of magnetic material hole processing electricity main shaft, includes electricity main shaft, drawing pipe 2, collet chuck 3 and buffer gear, wherein:

The electric spindle, mainly comprising hollow spindle 1, rotor, stator and housing, is not described here, since this is a prior art product;

The pulling pipe 2 is arranged in the main shaft 1 in a penetrating way and is in axial sliding fit with the main shaft 1, namely, the pulling pipe 2 can move forwards and backwards in the axial direction of the main shaft 1, the front end of the pulling pipe is connected with the elastic chuck 3, and the rear end of the pulling pipe extends out of the main shaft 1;

The elastic chuck 3 is arranged at one end of the main shaft 1, a long groove is formed in the head part with an outer conical surface along the axial direction to form a clamping jaw capable of contracting centripetally, an inner hole which is suitable for the shape of a clamped workpiece 4 is formed in the middle of the clamping jaw, and the elastic chuck 3 is connected with one end of the pull tube 2, so that the pull tube 2 can drive the elastic chuck 3 to move along the axial direction, the inner hole is reduced or increased by deformation of the clamping jaw, and the clamping and loosening of the workpiece 4 are realized, which is the elastic chuck 3 for a machine tool which is more conventional in the prior art, and therefore, the elastic chuck is not expanded in detail;

the buffer mechanism comprises a material returning ejector rod 5, a guide rod 6, a tube pulling ejector rod 7, a return spring 8, a spring positioning sleeve 9 and a sliding sleeve 10, wherein:

The material returning ejector rod 5 is slidably connected in an inner hole of the elastic chuck 3 and can slide in the inner hole, the front end of the material returning ejector rod 5 is used for propping against the workpiece 4, the rear end of the material returning ejector rod 5 is in threaded connection with the front end of the guide rod 6, the front end of the tube drawing ejector rod 7 is in threaded connection with the rear end of the guide rod 6, the spring positioning sleeve 9 is fixed in the middle of the tube drawing ejector rod 7 through a locking piece, the sliding sleeve 10 is arranged in the rear end of the tube drawing 2, the return spring 8 is sleeved on the tube drawing ejector rod 7, one end of the return spring is propped against the spring positioning sleeve 9, and the other end of the return spring is propped against the sliding sleeve 10;

The working principle of this embodiment is that when the workpiece 4 is pushed into the inner hole of the collet chuck 3 by the ejection cylinder 12, the workpiece 4 will abut against the material returning ejector rod 5, and the material returning ejector rod 5 is pushed backward, at this time, the material returning ejector rod 5 will move backward together with the guide rod 6 and the tube drawing ejector rod 7, because the sliding sleeve 10 does not move together with the material returning ejector rod 5, and the spring positioning sleeve 9 moves together with the material returning ejector rod 5, the return spring 8 will be compressed at this time, so that a restoring force will be given to the material returning ejector rod 5, so that after the stroke of the ejection cylinder 12 is completed, the workpiece 4 will continue to be abutted against by the material returning ejector rod 5, and will not move forward due to inertia, and then the tube drawing 2 can be controlled to work, and the workpiece 4 is clamped by the collet chuck 3.

Embodiment two:

The difference between the first embodiment and the second embodiment is that the cross section of the guide rod 6 is hexagonal, that is, the guide rod 6 is a non-rotating body, and an anti-rotation sleeve 11 is connected to the front end of the pull tube 2 in a threaded manner, the anti-rotation sleeve 11 is sleeved outside the guide rod 6, and the cross section of a through hole in the anti-rotation sleeve 11 through which the guide rod 6 passes is hexagonal, so that when the material returning ejector rod 5 needs to be replaced, the material returning ejector rod 5 can be rotated, and at the moment, the guide rod 6 can be limited by the anti-rotation sleeve 11 in the circumferential direction, that is, the guide rod 6 cannot be rotated, and the material returning ejector rod 5 can be conveniently removed and replaced.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Various alterations and modifications will no doubt become apparent to those skilled in the art after having read the above description. Therefore, the appended claims should be construed to cover all such variations and modifications as fall within the true spirit and scope of the utility model. Any and all equivalents and alternatives falling within the scope of the claims are intended to be embraced therein.

Claims (7)

1. The clamping and positioning device for the electric spindle for machining the magnetic material holes comprises a hollow spindle (1), a pull tube (2) penetrating through the spindle (1) and axially sliding matched with the spindle (1), and an elastic chuck (3) arranged at one end of the spindle (1) and connected with one end of the pull tube (2) and used for clamping or loosening a workpiece (4), and is characterized by further comprising a buffer mechanism arranged inside the spindle (1) and used for propping against the workpiece (4) entering the elastic chuck (3).

2. The clamping and positioning device for the electric spindle for machining the magnetic material holes, as set forth in claim 1, is characterized in that the buffer mechanism comprises a material returning ejector rod (5) which is connected inside the elastic chuck (3) in a sliding manner and is used for propping against a workpiece (4) entering the elastic chuck (3), and an elastic assembly which is used for providing a restoring force for the material returning ejector rod (5).

3. The clamping and positioning device for the electric spindle for machining the magnetic material holes is characterized in that the elastic assembly comprises a guide rod (6) with one end connected to one end of a material returning ejector rod (5), a tube pulling ejector rod (7) with one end connected to the other end of the guide rod (6), a return spring (8) sleeved on the tube pulling ejector rod (7), a spring positioning sleeve (9) fixed on the tube pulling ejector rod (7) and a sliding sleeve (10) arranged at the other end of the tube pulling (2), one end of the return spring (8) is propped against the spring positioning sleeve (9), and the other end of the return spring (8) is propped against the sliding sleeve (10).

4. The clamping and positioning device for the motorized spindle for processing the magnetic material holes, as set forth in claim 3, is characterized in that the material returning ejector rod (5) is in threaded connection with the guide rod (6).

5. The clamping and positioning device for the motorized spindle for machining the magnetic material hole according to claim 4, wherein the guide rod (6) is a non-rotating body, and further comprises an anti-rotation sleeve (11) which is fixed in the pull tube (2) and sleeved outside the guide rod (6) for preventing the guide rod (6) from rotating.

6. The clamping and positioning device for the electric spindle for machining the magnetic material hole, as set forth in claim 5, is characterized in that the cross section of the guide rod (6) is hexagonal, a through hole for the guide rod (6) to pass through is arranged in the middle of the anti-rotation sleeve (11), and the cross section of the through hole is hexagonal matched with the guide rod (6).

7. The clamping and positioning device for the electric spindle for machining the magnetic material holes is characterized in that through holes are formed in the pull tube ejector rod (7), mounting holes are formed in the spring positioning sleeve (9), and the spring positioning sleeve (9) is locked on the pull tube ejector rod (7) through locking pieces penetrating through the mounting holes and the through holes.