Magnetic rotation coding measuring device

Abstract

The utility model discloses a magnetic rotation coding measuring device, comprising a connecting seat which is connected with the rear end face of a stepping motor, and the front end of the connecting seat is provided with a mounting groove; a magnetic rotary encoder, wherein the magnetic rotary encoder is arranged in the mounting groove; the Hall magnet is installed at the rear end of the rotating shaft of the stepping motor in a position-adjustable mode through the axial position adjusting assembly, and the Hall magnet can be inducted with a Hall sensor on the magnetic rotary encoder. The utility model relates to a magnetic rotation coding measuring device, which belongs to the technical field of encoder measurement, is arranged on a rotating shaft of a stepping motor which is arranged on a machine tool and is used for driving a screw rod to rotate, and measures the walking distance of a working table of the machine tool by detecting the number of rotating turns of the rotating shaft of the stepping motor through a magnetic rotation encoder. And the device can be installed on the shell of the stepping motor in a sealing manner, so that the device cannot be affected with damp and damaged by collision.

Description

Technical Field

[0001] The utility model relates to the technical field of encoder measurement, and more specifically, to a magnetic rotation encoding measurement device. Background Art

[0002] At present, linear grating rulers are used on machine tools to measure the travel distance of machine tool worktables. Linear grating rulers are measurement feedback devices that work based on the optical principle of gratings. They are set on one side of the guide rail, occupying a large space, inconvenient to arrange, and easily scratched and damaged. Affected by the length of the ruler, it is easy to go too far, causing damage to the grating ruler. The grating reader and ruler body are easily affected by moisture, causing deviations in readings. After long-term use, it is easy to cause inaccurate readings. The installation time is too long and requires professional installation. Utility Model Content

[0003] In view of the above shortcomings, the purpose of the present invention is to provide a magnetic rotation encoding measurement device.

[0004] In order to achieve the above object, the utility model provides a magnetic rotation encoding measurement device, comprising:

[0005] A connecting seat, the connecting seat is connected to the rear end surface of the stepping motor, and a mounting groove is provided at the front end of the connecting seat;

[0006] A magnetic rotary encoder, wherein the magnetic rotary encoder is arranged in the mounting groove;

[0007] An axial positioning component and a Hall magnet, wherein the Hall magnet is adjustably mounted on the rear end of the rotating shaft of the stepping motor through the axial positioning component, and the Hall magnet can sense the Hall sensor on the magnetic rotary encoder.

[0008] Preferably, the magnetic rotary encoder comprises a PCB circuit board, a Hall sensor and a wiring harness, the Hall sensor is fixedly mounted on the PCB circuit board, and the wiring harness is connected to the PCB circuit board.

[0009] Preferably, the mounting groove is a circular groove, the PCB circuit board is a circular plate structure, and the Hall sensor is arranged at the center of the circular plate structure.

[0010] Preferably, a wire passing groove extending to the mounting groove is provided on one side of the connecting seat.

[0011] Preferably, bumps are provided on both sides of the PCB circuit board, positioning grooves adapted to the bumps are provided on both sides of the mounting groove, and a screw structure connected to the bottom of the positioning groove is provided on the bump.

[0012] Preferably, a screw hole is provided in the positioning groove, and the screw structure can pass through the protrusion and connect with the screw hole, and a height adjustment gasket is provided in the positioning groove.

[0013] Preferably, the axial position adjustment assembly includes a connecting member, an adjustment screw, and a magnetic attraction block. A clamping hole is provided at the rear end of the rotating shaft of the stepping motor. The connecting member is clamped with the clamping hole. The magnetic attraction block is arranged at the inner end of the clamping hole. The Hall magnet is connected to the rear end of the adjustment screw, and the adjustment screw is threadedly connected to the connecting member.

[0014] Preferably, a threaded hole is provided in the connecting member. The adjustment screw is threadedly connected to the threaded hole of the connecting member. A clamping groove is provided at the head of the adjustment screw. The Hall magnet is arranged in the clamping groove.

[0015] Preferably, the clamping hole is of a waist-shaped hole structure, and the connecting member is of a waist-shaped key structure.

[0016] Preferably, an annular groove is provided on the front end face of the connecting seat, and a sealing ring that abuts against the rear end face of the stepping motor is arranged in the annular groove.

[0017] Preferably, connecting plates are provided on both sides of the connecting seat. Mounting holes adapted to the fixing bolts at the rear edge of the outer shell of the stepping motor are provided on the connecting plates. The screw of the fixing bolt can pass through the mounting hole and be fixedly connected to the outer shell of the stepping motor.

[0018] Compared with the existing technology, the present utility model has the following beneficial effects:

[0019] The magnetic rotation encoding measurement device of the present utility model is installed on the rotating shaft of the stepping motor used to drive the lead screw rotation on the machine tool. By detecting the number of rotations of the rotating shaft of the stepping motor through the magnetic rotation encoder, the traveling distance of the workbench of the machine tool is measured. The magnetic rotation encoder transmits the measurement data to the controller, and the traveling distance of the workbench can be displayed on the controller. The present magnetic rotation encoder can accurately measure the traveling distance of the workbench of the machine tool, and can be hermetically installed on the outer shell of the stepping motor, and there will be no situation of being affected by moisture or being damaged by collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 is a three-dimensional structure diagram of the magnetic rotation encoding measurement device of the present utility model;

[0022] Figure 2 is the exploded structure assembly of the magnetic rotation encoding measurement device of the present utility model Figure 1 ;

[0023] Figure 3 Exploded view of the structural assembly of the magnetic rotation encoding measurement device of the present utility model Figure 2 ;

[0024] Figure 4 Exploded view of the structural assembly of the magnetic rotation encoding measurement device of the present utility model Figure 3 ;

[0025] Figure 5 Cross-sectional view of the structure of the magnetic rotation encoding measurement device of the present utility model in the front view direction Figure 1 ;

[0026] Figure 6 Cross-sectional view of the structure of the magnetic rotation encoding measurement device of the present utility model in the side view direction Figure 2 。

[0027] In the figure: 1. Connection seat; 2. Stepper motor; 3. Installation groove; 4. Magnetic rotary encoder; 5. Axial position adjustment component; 6. Hall magnet; 7. Hall sensor; 8. PCB circuit board; 9. Wiring harness; 10. Wire trough; 11. Bump; 12. Positioning groove; 13. Connector; 14. Position adjustment screw; 15. Magnetic attraction block; 16. Card hole; 17. Threaded hole; 18. Card slot; 19. Annular groove; 20. Connection plate; 21. Installation hole; 22. Fixed bolt; 23. Rotating shaft; 24. Sealing ring. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. The embodiments of the present utility model will be described below according to its overall structure.

[0029] The specific embodiments of the present utility model are as follows:

[0030] As shown in the attached Figures 1 - 6 figures, a magnetic rotation encoding measurement device includes:

[0031] Connection seat 1, the connection seat 1 is connected to the rear end face of the stepper motor 2, and an installation groove 3 is provided at the front end of the connection seat 1;

[0032] Magnetic rotary encoder 4, the magnetic rotary encoder 4 is arranged in the installation groove 3;

[0033] Axial adjustment component 5 and Hall magnet 6. The Hall magnet 6 is adjustably installed at the rear end of the rotating shaft 23 of the stepping motor 2 through the axial adjustment component 5. The Hall magnet 6 can be induced by the Hall sensor 7 on the magnetic rotary encoder 4. The distance between the Hall magnet 6 and the Hall sensor 7 on the magnetic rotary encoder 4 can be adjusted through the axial adjustment component 5.

[0034] The magnetic rotary encoding measurement device of the present utility model is installed on the rotating shaft 23 of the stepping motor 2 used to drive the lead screw rotation on the machine tool. The number of rotations of the rotating shaft 23 of the stepping motor 2 is detected by the magnetic rotary encoder 4 to measure the traveling distance of the workbench of the machine tool. The magnetic rotary encoder 4 transmits the measurement data to the controller, and the traveling distance of the workbench can be displayed on the controller. This magnetic rotary encoder 4 can accurately measure the traveling distance of the machine tool workbench, and can be hermetically installed on the outer shell of the stepping motor 2, without the situation of being affected by moisture and being damaged by collision;

[0035] In this magnetic rotary encoding measurement device, the connecting seat 1 is connected to the rear end face of the outer shell of the stepping motor 2, and the magnetic rotary encoder 4 is installed in the installation groove 3 in the connecting seat 1; an axial adjustment component 5 is also provided and connected to the rotating shaft 23 of the stepping motor 2. The axial adjustment component 5 can rotate following the rotating shaft 23 of the stepping motor 2. The rear end of the axial adjustment component 5 can extend into the installation groove 3 of the connecting seat 1. The Hall magnet 6 is installed on the axial adjustment component 5, and the position of the Hall magnet 6 extending into the installation groove 3 of the connecting seat 1 is adjusted through the axial adjustment component 5, and the distance between the Hall magnet 6 and the Hall sensor 7 on the magnetic rotary encoder 4 is adjusted to ensure that the Hall magnet 6 can be induced by the Hall sensor 7. The rotation angle of the Hall magnet 6 rotating following the rotating shaft 23 is detected by the Hall sensor 7 to measure the number of rotations of the lead screw driving the workbench to travel, thereby measuring the traveling distance of the workbench.

[0036] A preferred specific implementation of this embodiment is that the magnetic rotary encoder 4 includes a PCB circuit board 8, a Hall sensor 7, and a wire harness 9. The Hall sensor 7 is fixedly installed on the PCB circuit board 8, and the wire harness 9 is connected to the PCB circuit board 8. In this embodiment, a conventional circuit is provided on the PCB circuit board 8, and the data detected by the Hall sensor 7 can be transmitted to an external controller through the wire harness 9. The Hall sensor 7 can be selected as a bipolar latching surface-mount Hall sensor of model EW-432, and the number of rotations of the rotating shaft 23 can be detected by sensing the magnetic field change of the Hall magnet 6.

[0037] A preferred specific implementation manner of this embodiment is that the installation groove 3 is a circular groove, the PCB circuit board 8 is a circular plate structure, and the Hall sensor 7 is arranged at the center of the circular plate structure. In this embodiment, when installing the connection seat, ensure that the center line of the circular groove is parallel or coincident with the center line of the rotating shaft 23 to ensure the accuracy and stability of detection.

[0038] A preferred specific implementation manner of this embodiment is that a wire passing groove 10 extending to the installation groove 3 is provided on one side of the connection seat 1. In this embodiment, the wire harness 9 can extend to the outside through the wire passing groove 10 and then be fixed and the gap sealed by hot melt adhesive.

[0039] A preferred specific implementation manner of this embodiment is that bumps 11 are provided on both sides of the PCB circuit board 8, positioning grooves 12 adapted to the bumps 11 are provided on both sides of the installation groove 3, and a screw structure for connecting to the bottom of the positioning groove 12 is provided on the bumps 11. In this embodiment, two positioning grooves 12 are machined on both sides of the installation groove 3. When the PCB circuit board 8 is inserted into the installation groove 3, the bumps 11 are also inserted into the positioning grooves 12. The bumps 11 are positioned by the positioning grooves 12 to prevent the PCB circuit board 8 from rotating, and then the PCB circuit board 8 is fixed by the screw structure;

[0040] A preferred specific implementation manner of this embodiment is that a screw hole is provided in the positioning groove 12, the screw structure can pass through the bump 11 and connect to the screw hole, and a height adjustment gasket is provided in the positioning groove 12. In this embodiment, according to needs, a gasket can be provided in the positioning groove 12 to adjust the installation height of the PCB circuit board 8 in the installation groove.

[0041] A preferred specific implementation manner of this embodiment is that the axial position adjustment assembly 5 includes a connecting piece 13, an adjustment screw 14 and a magnetic attraction block 15. A clamping hole 16 is provided at the rear end of the rotating shaft 23 of the stepping motor 2. The connecting piece 13 is clamped with the clamping hole 16. The magnetic attraction block 15 is arranged at the inner end of the clamping hole 16. The Hall magnet 6 is connected to the rear end of the adjustment screw 14, and the adjustment screw 14 is threadedly connected to the connecting piece 13. In this embodiment, the axial position adjustment assembly 5 is installed in the clamping hole 16 through the connecting piece 13 and the magnetic attraction block 15, and the axial position adjustment assembly 5 is fixed to the rear end of the rotating shaft 23 of the stepping motor 2 to realize synchronous rotation of the connecting piece 13 and the rotating shaft 23; then, by threadedly connecting the adjustment screw 14 to the connecting piece 13, the axial length is adjusted by adjusting the distance that the adjustment screw 14 is screwed into the connecting piece 13, so that the position where the Hall magnet 6 on the adjustment screw 14 extends into the installation groove 3 of the connection seat 1 can be adjusted.

[0042] A preferred specific implementation of this embodiment is that a threaded hole 17 is provided in the connecting member 13, the adjusting screw 14 is threadedly connected to the threaded hole 17 of the connecting member 13, a clamping groove 18 is provided at the head of the adjusting screw 14, and the Hall magnet 6 is arranged in the clamping groove 18.

[0043] A preferred specific implementation of this embodiment is that the clamping hole 16 is a waist-shaped hole structure, and the connecting member 13 is a waist-shaped key structure. The clamping hole 16 is set as a waist-shaped hole structure, which is convenient for milling by a milling machine.

[0044] A preferred specific implementation of this embodiment is that an annular groove 19 is provided on the front end face of the connecting seat 1, and a sealing ring 24 that abuts against the rear end face of the stepping motor 2 is arranged in the annular groove 19. In this embodiment, by arranging the sealing ring 24 to abut against the rear end face of the housing of the stepping motor 2, the sealing connection between the connecting seat 1 and the housing of the stepping motor 2 is realized, preventing external water vapor from entering the installation groove 3 of the connecting seat 1 and affecting the normal operation of the PCB circuit board 8 and the Hall sensor 7.

[0045] A preferred specific implementation of this embodiment is that the connecting seat 1 is a cylindrical structure that can closely fit the rear end face of the housing of the stepping motor 2. Connecting plates 20 are provided on both sides of the connecting seat 1, and mounting holes 21 adapted to the fixing bolts 2 at the rear edge of the housing of the stepping motor 2 are provided on the connecting plates 20. The screw of the fixing bolt 2 can pass through the mounting hole 21 and be fixedly connected to the housing of the stepping motor 2. The connecting plates 2 on both sides of the connecting seat 1 are fixed by using the original fixing bolts 2 on the housing of the stepping motor 2, and the connecting seat 1 is pressed against the housing of the stepping motor 2.

[0046] The foregoing description of the specific exemplary embodiments of the present invention is for the purposes of illustration and exemplification. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made in light of the above teachings. Although embodiments of the present invention have been shown and described, this specific embodiment is only an interpretation of the present invention and is not a limitation of the invention. The specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical applications, so that those skilled in the art can, after reading this specification, make modifications, substitutions, variations, and various different selections and changes that do not make creative contributions to the embodiments as needed, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A magnetic rotation encoding measurement device, characterized in that, include: A connecting seat (1), the connecting seat (1) being connected to the rear end surface of the stepping motor (2), and a mounting groove (3) being provided at the front end of the connecting seat (1); A magnetic rotary encoder (4), wherein the magnetic rotary encoder (4) is arranged in the mounting groove (3); An axial position adjustment component (5) and a Hall magnet (6), wherein the Hall magnet (6) is adjustably mounted on the rear end of the rotating shaft of the stepping motor (2) through the axial position adjustment component (5), and the Hall magnet (6) can sense a Hall sensor (7) on the magnetic rotary encoder (4).

2. The magnetic rotation encoding measurement device according to claim 1, characterized in that, The magnetic rotary encoder (4) comprises a PCB circuit board (8), a Hall sensor (7) and a wiring harness (9); the Hall sensor (7) is fixedly mounted on the PCB circuit board (8); and the wiring harness (9) is connected to the PCB circuit board (8).

3. The magnetic rotation encoding measurement device according to claim 2, characterized in that The mounting groove (3) is a circular groove, the PCB circuit board (8) is a circular plate structure, and the Hall sensor (7) is arranged at the center of the circular plate structure.

4. A magnetic rotation encoding measurement device according to claim 2, characterized in that, A wire passing groove (10) extending to the mounting groove (3) is provided on one side of the connection seat (1).

5. The magnetic rotation encoding measurement device according to claim 2, wherein The PCB circuit board (8) is provided with protrusions (11) on both sides, the mounting groove (3) is provided with positioning grooves (12) adapted to the protrusions (11) on both sides, and the protrusion (11) is provided with a screw structure connected to the bottom of the positioning groove (12).

6. The magnetic rotation encoding measurement device according to claim 1, wherein The axial positioning assembly (5) comprises a connecting piece (13), a positioning screw (14) and a magnetic block (15); a clamping hole (16) is provided at the rear end of the rotating shaft of the stepping motor (2); the connecting piece (13) is clamped with the clamping hole (16); the magnetic block (15) is arranged at the inner end of the clamping hole (16); the Hall magnet (6) is connected to the rear end of the positioning screw (14); and the positioning screw (14) is threadedly connected to the connecting piece (13).

7. A magnetic rotation encoding measurement device according to claim 6, characterized in that, A threaded hole (17) is provided in the connecting piece (13), the adjusting screw (14) is threadedly connected to the threaded hole (17) of the connecting piece (13), a slot (18) is provided at the head of the adjusting screw (14), and the Hall magnet (6) is arranged in the slot (18).

8. A magnetic rotation encoding measurement device according to claim 6, wherein, The clamping hole (16) is a waist-shaped hole structure, and the connecting piece (13) is a waist-shaped key structure.

9. The magnetic rotation encoding measurement device according to claim 5, wherein An annular groove (19) is provided on the front end surface of the connecting seat (1), and a sealing ring is provided in the annular groove (19) and abuts against the rear end surface of the stepping motor (2).

10. A magnetic rotation encoding measurement device according to claim 1, characterized in that, Connecting plates (20) are provided on both sides of the connecting seat (1), and mounting holes (21) are provided on the connecting plates (20) that are compatible with fixing bolts at the rear end edge of the housing of the stepping motor (2), and the screw rods of the fixing bolts can pass through the mounting holes (21) and be fixedly connected to the housing of the stepping motor (2).

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