High-precision joint encoder

Abstract

The utility model belongs to the technical field of encoders, and particularly relates to a high-precision joint encoder, which comprises a framework, a plurality of magnetic rubbers are arranged outside the framework, a first mounting positioning hole is arranged on the framework, a mounting groove is arranged at the bottom of the framework, two mounting holes are arranged on the mounting groove, and a second mounting positioning hole is arranged on the framework. According to the utility model, through the arrangement of the first installation positioning hole and the plurality of magnetic rubbers, the installation position accuracy of the encoder can be ensured through the arrangement of the first installation positioning hole, the magnetic rubbers can play a certain protection role on electromagnetic interference, and when external electromagnetic waves reach the magnetic rubbers, the magnetic materials interact with the electromagnetic waves, so that the electromagnetic waves are prevented from being damaged. The magnetic material can change the propagation path of electromagnetic waves, so that part of the electromagnetic waves are reflected, electromagnetic energy entering the encoder is reduced, electromagnetic interference is reduced to the maximum extent, more complex and accurate mechanical motion and time control can be achieved through cooperative use of the first installation positioning hole and the magnetic rubber, and the encoder is more stable in performance. And the precision of the encoder is reasonably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of encoders, in particular to a high-precision joint encoder. Background Art

[0002] A high-precision joint encoder is a sensor used to measure rotation angle and speed. It is widely used in robotics, industrial automation, medical equipment and other fields. With the development of automation technology, the development direction of encoders is also intelligent and networked.

[0003] However, the existing joint encoder is susceptible to external electromagnetic interference, which reduces the accuracy of the encoder. Since the working environment of the encoder is often accompanied by strong vibration, the encoder without shock absorption function will cause relative displacement deviation between the code disk and the reading head when subjected to frequent and severe vibration, causing errors in the measurement signal and reducing the measurement accuracy. For this reason, a high-precision joint encoder is proposed. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a high-precision joint encoder.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a high-precision joint encoder includes a skeleton, a plurality of magnetic rubbers are provided on the outside of the skeleton, a first mounting positioning hole is provided on the skeleton, a mounting groove is provided at the bottom of the skeleton, two mounting holes are provided on the mounting groove, and a buffer structure is provided in the mounting groove.

[0006] As a further description of the above technical solution:

[0007] There are eight magnetic rubbers, and the eight magnetic rubbers have different pole widths.

[0008] As a further description of the above technical solution:

[0009] The eight magnetic rubbers are bonded to the skeleton through vulcanization molding to form a whole.

[0010] As a further description of the above technical solution:

[0011] The buffer structure includes an inner buffer layer that is clamped with the mounting groove, an outer buffer layer is fixedly provided on the bottom of the inner buffer layer, and a second mounting positioning hole is provided on both the outer buffer layer and the inner buffer layer. The second mounting positioning hole and the first mounting positioning hole have the same size, and the bottom of the outer buffer layer is provided with multiple anti-slip pads and multiple rows of semicircular buffer balls.

[0012] As a further description of the above technical solution:

[0013] A mounting cavity is provided inside the semicircular buffer ball, a spring is fixed in the mounting cavity, and the top of the spring fits the bottom of the outer buffer layer.

[0014] As a further description of the above technical solution:

[0015] A plurality of hexagonal holes are provided in the outer buffer layer, and the plurality of hexagonal holes form a honeycomb structure.

[0016] As a further description of the above technical solution:

[0017] Two positioning rods are fixedly provided on the top of the inner buffer layer, and the positioning rods are adapted to the mounting holes. The bottoms of the plurality of anti-slip pads are all provided with anti-slip grooves.

[0018] The utility model has the following beneficial effects:

[0019] 1. Compared with the existing technology, this high-precision joint encoder, by setting a first mounting positioning hole and multiple magnetic rubbers with different extreme widths, the setting of the first mounting positioning hole can ensure the installation position accuracy of the encoder, and the magnetic rubber can play a certain protective role against electromagnetic interference. When external electromagnetic waves reach the magnetic rubber, the magnetic material will interact with the electromagnetic waves. The magnetic material can change the propagation path of the electromagnetic waves and cause part of the electromagnetic waves to be reflected, thereby reducing the electromagnetic energy entering the encoder and minimizing electromagnetic interference. The combined use of the first mounting positioning hole and the magnetic rubber can achieve more complex and precise mechanical movement and time control, and reasonably improve the accuracy of the encoder.

[0020] 2. Compared with the existing technology, this high-precision joint encoder, by setting an inner buffer layer, a positioning rod, an outer buffer layer, a second mounting positioning hole, an anti-slip pad, a semicircular buffer ball, a spring and a hexagonal hole, the equipment will now generate vibration during use. The spring inside the semicircular buffer ball can play a role in preliminary shock absorption. When shocked, multiple springs will squeeze the outer buffer layer. When the honeycomb structure in the outer buffer layer is under pressure, the hexagonal hole will gradually deform, and the air will flow in the hole, consuming energy through the compression and flow of the air, thereby achieving the purpose of secondary shock absorption, thereby minimizing the amplitude of external conduction, reducing the error generated by the measurement signal, and improving the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a first-perspective stereoscopic structural diagram of the high-precision joint encoder proposed in the utility model;

[0022] Figure 2 This is a schematic diagram of the second perspective stereoscopic structure of the high-precision joint encoder proposed by the utility model;

[0023] Figure 3This is a schematic diagram of the three-dimensional structure of the skeleton in the high-precision joint encoder proposed in the utility model;

[0024] Figure 4 This is a first-perspective decomposition diagram of the buffer structure in the high-precision joint encoder proposed by the present invention;

[0025] Figure 5 This is a second-view decomposition diagram of the buffer structure in the high-precision joint encoder proposed by the present invention;

[0026] Figure 6 This is a schematic diagram of the side cross-sectional structure of the outer buffer layer of the high-precision joint encoder proposed by the present utility model.

[0027] Legend:

[0028] 1. Skeleton; 2. Magnetic rubber; 3. First mounting positioning hole; 4. Mounting slot; 5. Mounting hole; 6. Buffer structure; 601. Inner buffer layer; 602. Positioning rod; 603. Outer buffer layer; 604. Second mounting positioning hole; 605. Anti-slip pad; 606. Semicircular buffer ball; 607. Spring; 608. Hexagonal hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Reference Figures 1 to 6 The high-precision joint encoder provided by the present invention comprises a skeleton 1, a mounting groove 4 is provided at the bottom of the skeleton 1, two mounting holes 5 are provided on the mounting groove 4, and a buffer structure 6 is provided in the mounting groove 4;

[0031] In order to improve the accuracy of the encoder, a first mounting positioning hole 3 is provided on the skeleton 1, and a plurality of magnetic rubbers 2 are provided on the outside of the skeleton 1. There are eight magnetic rubbers 2, and the extreme widths of the eight magnetic rubbers 2 are different. The eight magnetic rubbers 2 are vulcanized and bonded to the skeleton 1 to form a whole. The setting of the first mounting positioning hole 3 can ensure the installation position accuracy of the encoder. The magnetic rubber 2 can play a certain protective role against electromagnetic interference. When external electromagnetic waves reach the magnetic rubber 2, the magnetic material will interact with the electromagnetic waves. The magnetic material can change the propagation path of the electromagnetic waves and cause part of the electromagnetic waves to be reflected, just like light is reflected back when it encounters a mirror, thereby reducing the electromagnetic energy entering the encoder and minimizing electromagnetic interference. The coordinated use of the first mounting positioning hole 3 and the magnetic rubber 2 can achieve more complex and precise mechanical movement and time control;

[0032] In order to achieve the purpose of shock reduction, the buffer structure 6 includes an inner buffer layer 601 that is clamped with the mounting groove 4. Two positioning rods 602 are fixed on the top of the inner buffer layer 601. The positioning rods 602 are adapted to the mounting holes 5. An outer buffer layer 603 is fixed on the bottom of the inner buffer layer 601. A plurality of hexagonal holes 608 are provided in the outer buffer layer 603. The plurality of hexagonal holes 608 form a honeycomb structure. A second mounting positioning hole 604 is provided on both the outer buffer layer 603 and the inner buffer layer 601. The second mounting positioning hole 604 is the same size as the first mounting positioning hole 3. A plurality of anti-slip pads 605 and a plurality of rows of semicircular buffer balls 606 are provided at the bottom of the outer buffer layer 603. The bottom of the anti-slip pad 605 is provided with anti-slip grooves, and an installation cavity is provided inside the semicircular buffer ball 606. A spring 607 is fixed in the installation cavity. The top of the spring 607 fits the bottom of the outer buffer layer 603. The spring 607 inside the semicircular buffer ball 606 can play a role in preliminary shock absorption. When subjected to vibration, multiple springs 607 will squeeze the outer buffer layer 603. When the honeycomb structure in the outer buffer layer 603 is subjected to pressure, the hexagonal hole 608 will gradually deform, and the air flows in the hole. The energy is consumed by the compression and flow of the air, which plays the purpose of secondary shock absorption, thereby minimizing the amplitude of external conduction, reducing the error generated by the measurement signal, and improving the measurement accuracy.

[0033] Working principle: When the encoder is put into use, first install the buffer structure 6 in the installation groove 4, insert the positioning rod 602 into the two installation holes 5, and the setting of the positioning rod 602 and the installation hole 5 can realize the rapid positioning and installation of the buffer structure 6. Then install the skeleton 1 on the equipment. The buffer structure 6 at the bottom of the skeleton 1 fits with the installation surface of the equipment. The setting of the first installation positioning hole 3 can ensure the installation position accuracy of the encoder. The magnetic rubber 2 can play a certain protective role against electromagnetic interference. When the external electromagnetic wave reaches the magnetic rubber 2, the magnetic material will interact with the electromagnetic wave. The magnetic material can change the propagation path of the electromagnetic wave and reflect part of the electromagnetic wave, just like light encountering a mirror and reflecting back, thereby reducing The electromagnetic energy entering the encoder minimizes electromagnetic interference. The combined use of the first mounting positioning hole 3 and the magnetic rubber 2 can achieve more complex and precise mechanical movement and time control. Vibration is generated during the operation of the equipment and will first come into contact with multiple semicircular buffer balls 606. The spring 607 inside the semicircular buffer ball 606 can play a role in initial shock absorption. When subjected to vibration, the multiple springs 607 will squeeze the outer buffer layer 603. When the honeycomb structure in the outer buffer layer 603 is under pressure, the hexagonal hole 608 will gradually deform, and the air will flow in the hole, consuming energy through the compression and flow of the air, which plays the purpose of secondary shock absorption, thereby minimizing the amplitude of external conduction, reducing the error generated by the measurement signal, and improving the measurement accuracy.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-precision joint encoder, comprising a skeleton (1), characterized in that: The frame (1) is provided with a plurality of magnetic rubbers (2) on the outside, the frame (1) is provided with a first mounting positioning hole (3), the frame (1) is provided with a mounting groove (4) at the bottom, the mounting groove (4) is provided with two mounting holes (5), and a buffer structure (6) is provided in the mounting groove (4).

2. The high-precision joint encoder according to claim 1, characterized in that: The number of the magnetic rubbers (2) is eight, and the pole widths of the eight magnetic rubbers (2) are all different.

3. The high-precision joint encoder according to claim 2, characterized in that: The eight magnetic rubbers (2) are vulcanized and bonded to the skeleton (1) to form a whole.

4. The high-precision joint encoder according to claim 1, characterized in that: The buffer structure (6) comprises an inner buffer layer (601) engaged with the mounting groove (4); an outer buffer layer (603) is fixedly provided at the bottom of the inner buffer layer (601); a second mounting positioning hole (604) is provided on both the outer buffer layer (603) and the inner buffer layer (601); the second mounting positioning hole (604) and the first mounting positioning hole (3) have the same size; and a plurality of anti-slip pads (605) and a plurality of rows of semicircular buffer balls (606) are provided at the bottom of the outer buffer layer (603).

5. The high-precision joint encoder according to claim 4, characterized in that: A mounting cavity is provided inside the semicircular buffer ball (606), a spring (607) is fixedly provided in the mounting cavity, and the top of the spring (607) is fitted with the bottom of the outer buffer layer (603).

6. The high-precision joint encoder according to claim 4, characterized in that: A plurality of hexagonal holes (608) are provided in the outer buffer layer (603), and the plurality of hexagonal holes (608) form a honeycomb structure.

7. The high-precision joint encoder according to claim 4, characterized in that: Two positioning rods (602) are fixedly provided on the top of the inner buffer layer (601), and the positioning rods (602) are adapted to the mounting holes (5). The bottoms of the plurality of anti-slip pads (605) are all provided with anti-slip grooves.

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