High-precision r-axis motor

Abstract

The utility model discloses a kind of high-precision R-axis motor, including motor body, motor shaft, PCBA board, encoder chip, motor body is equipped with installation fixed block, installation fixed block is equipped with the clamping groove matched with encoder chip, encoder chip is installed in clamping groove, PCBA board is electrically connected with encoder chip.The utility model installs and positions encoder chip by increasing the installation fixed block of encoder chip, reduces the installation position error of encoder chip, improves the position / speed feedback precision of the motor shaft of R-axis motor, and further improves the control precision of robot joint, rotating platform etc..

Description

Technical Field

[0001] This utility model relates to the field of robotic arm technology, and in particular to a high-precision R-axis motor. Background Technology

[0002] The existing encoder PCBA board for R-axis motors is not directly fixed inside the motor. This mounting method results in encoders for R-axis motors potentially being different, making it impossible to guarantee the consistency of encoder mounting positions for each R-axis motor. This affects the position / speed feedback accuracy of the R-axis motor shaft, and consequently, the control accuracy of robot joints, rotating platforms, etc. Utility Model Content

[0003] The technical problem to be solved by this utility model embodiment is to provide a high-precision R-axis motor to improve the position / speed feedback accuracy of the motor shaft.

[0004] To solve the above-mentioned technical problems, this utility model provides a high-precision R-axis motor, including a motor body, a motor shaft, a PCBA board, and an encoder chip. The motor body is provided with a mounting block, and the mounting block is provided with a slot that matches the encoder chip. The encoder chip is installed in the slot, and the PCBA board is electrically connected to the encoder chip.

[0005] Furthermore, the slot has an opening on one side.

[0006] Furthermore, the card slot has two sides opposite to the opening side with clearance angles for avoiding the corners of the encoder chip.

[0007] Furthermore, the avoidance angle is an R angle.

[0008] Furthermore, the encoder chip is soldered onto the PCBA board, and the PCBA board and the encoder chip are mounted in the motor body via mounting blocks.

[0009] Furthermore, the motor shaft is equipped with a code disk corresponding to the encoder chip.

[0010] Furthermore, the mounting block is provided with mounting holes.

[0011] Furthermore, the mounting block is provided with clearance positions corresponding to the pins of the encoder chip.

[0012] The beneficial effects of this utility model are as follows: This utility model installs and positions the encoder chip by adding a mounting and fixing block for the encoder chip, thereby reducing the installation position error of the encoder chip, improving the position / speed feedback accuracy of the R-axis motor shaft, and thus improving the control accuracy of robot joints, rotating platforms, etc. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a high-precision R-axis motor according to an embodiment of this utility model.

[0014] Figure 2 This is a front view of a high-precision R-axis motor according to an embodiment of this utility model.

[0015] Figure 3 yes Figure 2 Sectional view at point BB.

[0016] Figure 4 This is a three-dimensional structural diagram of the encoder chip being installed in the mounting block according to an embodiment of this utility model.

[0017] Figure 5 This is a three-dimensional structural diagram of the mounting and fixing block according to an embodiment of the present utility model.

[0018] Explanation of icon numbers

[0019] 1. Motor body, 2. Motor shaft, 3. PCBA board, 4. Encoder chip, 5. Mounting block, 6. Slot, 7. Clearance angle, 8. Mounting hole, 9. Code disk, 10. Clearance position. Detailed Implementation

[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] In this embodiment of the invention, directional indicators (such as up, down, left, right, front, back, etc.) are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0023] Please refer to Figures 1-5 The high-precision R-axis motor of this utility model embodiment includes a motor body (i.e., stator), a motor shaft, a PCBA board, and an encoder chip.

[0024] The motor body contains a mounting block with a slot for the encoder chip. The encoder chip is installed in the slot. This invention directly secures the encoder chip using the mounting block, eliminating the need for a PCBA board and ensuring the encoder chip's positional accuracy. The PCBA board is electrically connected to the encoder chip. The encoder chip is soldered onto the PCBA board, and the PCBA board and encoder chip are housed within the motor body via the mounting block. The position of the encoder chip soldered onto the PCBA board can have errors (the PCBA board manufacturer's positional tolerance is ±0.2mm, which is significant for an R-axis motor). Combined with the PCBA board's installation errors, the encoder chip's positional error is further amplified. Therefore, this invention directly ensures the encoder chip's positional accuracy using the mounting block.

[0025] In one embodiment, the slot has an opening on one side. The side opening facilitates the user's assembly of the R-axis motor by directly embedding the encoder chip on the PCBA board into the slot.

[0026] In one embodiment, the slot has clearance angles on both opposite sides of its opening to prevent the encoder chip from caving. These clearance angles facilitate the processing and production of the mounting block (if it were a right angle, processing the mounting block would be difficult). Preferably, the clearance angles are radius (R-angle).

[0027] In addition, the pins of the encoder chip corresponding to the mounting block (at the edge of the slot) are also protected by a clearance mechanism, that is, clearance positions are set on the mounting block to prevent the mounting block from touching the pins of the encoder chip.

[0028] In one implementation, a code disk corresponding to the encoder chip is mounted on the motor shaft. The code disk, marked with position information (lines / magnetic poles / code tracks), serves as the physical carrier of this position information. The encoder chip, a sensor fixed to the motor body, is responsible for reading information from the rotating code disk and feeding back the actual position and speed of the R-axis motor to the controller. The code disk and encoder chip, as a whole, provide high-precision real-time position and speed feedback for the R-axis motor's control system. This is the foundation for achieving high-performance closed-loop control, ensuring that the R-axis can move accurately, quickly, and stably to the target position and speed, meeting the needs of high-precision automation applications.

[0029] As one implementation method, the mounting block is provided with mounting holes. This facilitates the user in assembling and installing the mounting block onto the motor body.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision R-axis motor, comprising a motor body, a motor shaft, a PCBA board, and an encoder chip, characterized in that, The motor body has a mounting block with a slot that matches the encoder chip. The encoder chip is installed in the slot, and the PCBA board is electrically connected to the encoder chip.

2. The high-precision R-axis motor as described in claim 1, characterized in that, The slot has an opening on one side.

3. The high-precision R-axis motor as described in claim 2, characterized in that, The slot has two clearance angles on opposite sides of the opening side for avoiding the corners of the encoder chip.

4. The high-precision R-axis motor as described in claim 3, characterized in that, The avoidance angle is R angle.

5. The high-precision R-axis motor as described in claim 1, characterized in that, The encoder chip is soldered onto the PCBA board, and the PCBA board and the encoder chip are mounted in the motor body via mounting blocks.

6. The high-precision R-axis motor as described in claim 1, characterized in that, The motor shaft is equipped with a code disk corresponding to the encoder chip.

7. The high-precision R-axis motor as described in claim 1, characterized in that, The mounting block has mounting holes.

8. The high-precision R-axis motor as described in claim 1, characterized in that, The mounting block has clearance positions corresponding to the pins of the encoder chip.

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