Encoder zero setting device

Abstract

The utility model relates to the technical field of encoders, in particular to an encoder zero setting device, which comprises a bottom plate, a support fixedly mounted on the bottom plate, a slider slidably arranged on the support, a mounting platform fixedly connected to one side of the slider, a stepping motor mounted on the mounting platform, and a rotating mechanism connected to the output end of the stepping motor through a coupler. A fixed base is fixedly installed on the bottom plate, a control motor is installed on the fixed base, the upper end and the lower end of the control motor are connected with a rear output shaft and a front output shaft respectively, the front output shaft is connected with the fixed base in a positioning and clamping mode, a code disc installing tool is placed on a rear end cover of the control motor, and an encoder code disc is placed on the code disc installing tool. The rear output shaft penetrates through the coded disc installing tool to be connected with the encoder coded disc, and an encoder reading head module is installed on one side of a rear end cover of the control motor. And the encoder and the control motor are subjected to zero setting during installation, so that the consistency of initial positions is ensured, and the uniformity in the subsequent production and use process is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of encoders, in particular to an encoder zeroing device. Background Art

[0002] With the development of artificial intelligence, many industries can use automated machines for mass production. When there are multiple machines producing the same process, the actions performed by multiple machines must be consistent to ensure the synchronization of the entire production rhythm and the uniform flow of each process of the production line. In order to ensure that the actions performed by the machine are completely consistent, each control motor that provides power to the production line uses the same control signal and feedback signal. Each control motor and the connected load must have the same initial position, and the feedback signal of each control motor must also have the same initial position, so that the motion conditions of multiple motors can be guaranteed to be the same. A combination of closed-loop control driver and encoder is used to achieve the same control signal and feedback signal for each control motor. The encoder Z-phase signal is a sensor signal used to measure the rotation angle, usually used in photoelectric encoders. Its function is to provide a reference point so that the starting position of the axis can be determined.

[0003] Publication No. CN115118092A discloses a split encoder, a motor and an auxiliary tooling, wherein a first fastener is placed in the installation notch along the radial direction of the encoder body, and then the column of the first fastener is passed through the encoder body and the motor housing to fix the encoder body on the motor housing, which is convenient for quick installation and improves installation efficiency.

[0004] However, in order to achieve consistent operation of multiple machines produced in large quantities, the initial position of the Z-phase signal of the encoder of each control motor needs to be consistent with the initial position of the load connected to the output shaft of the control motor. In the prior art, the encoder and the control motor are directly fixed and installed, and there is a lack of alignment and correction of their positions, which requires further subsequent operations, thereby affecting production and processing efficiency. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide an encoder zeroing device to solve the problem that when the encoder and the motor are assembled, there is a lack of uniformity in the initial position, and subsequent adjustments are required, which affects production efficiency.

[0006] Based on the above purpose, the utility model provides an encoder zeroing device, including a base plate, a bracket is fixedly installed on the base plate, a slide groove is opened in the middle of the bracket, a slider is slidably arranged in the slide groove, a mounting platform is fixedly connected to one side of the slider, a stepper motor is fixedly installed on the mounting platform, the output end of the stepper motor passes through the mounting platform and is connected with a coupling, the output end of the stepper motor is connected with a rotating mechanism through the coupling, a fixed base is also fixedly installed on the base plate below the mounting platform, a control motor is installed on the fixed base, the upper and lower ends of the control motor are respectively a rear output shaft and a front output shaft, the front output shaft is positioned and clamped with the fixed base, a code disk mounting tooling is placed on the rear end cover of the control motor, an encoder code disk is placed on the code disk mounting tooling, the rear output shaft passes through the code disk mounting tooling and is detachably connected to the encoder code disk, and an encoder reading head module is detachably installed on one side of the rear end cover of the control motor.

[0007] Further improvements are: a mounting hole is opened in the middle of the encoder code disc, the rear output shaft extends into the mounting hole, a locking screw is threadedly connected to one side of the mounting hole, and the rear output shaft and the encoder code disc are locked by the locking screw; an end hole is opened on the surface of the encoder code disc around the mounting hole.

[0008] A further improvement is that the rotating mechanism includes a rotating shaft, the upper end of the rotating shaft is connected to the coupling, the lower end of the rotating shaft is fixedly connected to a mounting plate, the mounting plate is mounted with a pin, and the pin is a retractable structure.

[0009] A further improvement is that a support block is fixedly connected to one side of the sliding block, the support block is arranged below the mounting platform, and the rotating shaft passes through the support block and is rotatably connected to the support block through a bearing.

[0010] A further improvement is that: a guide groove is provided on the bracket, two groups of guide grooves are provided and symmetrically distributed on both sides of the slide groove, a guide block is installed corresponding to the guide groove on the side of the slide away from the mounting platform, and the guide block is slidably arranged in the guide groove.

[0011] A further improvement is that a cylinder is fixed on the top of the bracket, and the output end of the cylinder is fixedly connected to the slider.

[0012] A further improvement is that a U-shaped notch is provided at one end of the coding disc tooling, and the rear output shaft passes through the U-shaped notch and fits inside the U-shaped notch.

[0013] A further improvement is that: the lower end of the front shaft is a D-shaped flat wire structure, the fixed base is provided with a D-shaped shaft hole, and the lower end of the front shaft is adapted to the D-shaped shaft hole.

[0014] The beneficial effects of the utility model are as follows: 1. By setting a rotating mechanism, when the encoder code disc is mounted on the rear output shaft of the control motor, the rotating mechanism drives the encoder code disc to rotate on the rear output shaft through the action of the stepping motor. During the rotation, the encoder reading head module senses the Z-phase engraved line on the encoder code disc. When the Z-phase engraved line is sensed, the rotating mechanism stops rotating, thereby completely adjusting to zero, ensuring that the initial position of the Z-phase engraved line remains consistent when the encoder is installed on the control motor, reducing the subsequent adjustment process and greatly improving the processing efficiency.

[0015] 2. A D-shaped shaft outlet hole is opened on the fixed base, and the lower end of the front shaft adopts a D-shaped flat wire structure. When the control motor is installed on the fixed base, the D-shaped shaft outlet hole and the D-shaped flat wire guide are connected to position the control motor on the fixed base, so that the milling plane position of the D-shaped flat wire is consistent with the initial position of the Z-phase signal of the encoder code disk, which is convenient for realizing that multiple machines in large-scale production can move in unison and synchronize the production rhythm, and can ensure the unified flow of each process of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the support structure of an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of a slider in an embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the rotating mechanism of the utility model embodiment;

[0021] Figure 5 This is a schematic diagram of the structure of the tooling for mounting a code disk according to an embodiment of the utility model;

[0022] Figure 6 This is a side view of the structure of the control motor of the utility model embodiment;

[0023] Figure 7 This is a schematic diagram of the control motor structure of the utility model embodiment;

[0024] Figure 8 This is a schematic diagram of the fixed base structure of an embodiment of the utility model.

[0025] The markings in the figure are:

[0026] 1. Base plate; 2. Bracket; 3. Slide groove; 4. Slider; 5. Mounting platform; 6. Stepper motor; 7. Coupling; 8. Fixed base; 9. Control motor; 10. Code disk mounting tooling; 11. Encoder code disk; 12. Encoder reading head module; 13. Mounting hole; 14. Locking screw; 15. End hole; 16. Rotating shaft; 17. Mounting plate; 18. Pin; 19. Support block; 20. Guide groove; 21. Guide block; 22. Cylinder; 23. D-shaped shaft hole. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0028] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] like Figure 1-8As shown, an encoder zeroing device comprises a base plate 1, a bracket 2 is fixedly mounted on the base plate 1, a slide groove 3 is provided in the middle of the bracket 2, a slider 4 is slidably arranged in the slide groove 3, a cylinder 22 is fixedly mounted on the top of the bracket 2, an output end of the cylinder 22 is fixedly connected to the slider 4, and the slider 4 is driven to slide in the slide groove 3 by the cylinder 22; a mounting platform 5 is fixedly connected to one side of the slider 4, a stepping motor 6 is fixedly mounted on the mounting platform 5, an output end of the stepping motor 6 penetrates the mounting platform 5 and is connected to a coupling 7, and an output end of the stepping motor 6 is connected to a rotating mechanism through the coupling 7, The stepper motor 6 drives the rotating mechanism to rotate through the coupling 7; a fixed base 8 is also fixedly installed on the bottom plate 1 below the mounting platform 5, and a control motor 9 is installed on the fixed base 8. The upper and lower ends of the control motor 9 are respectively a rear output shaft and a front output shaft, and the front output shaft is positioned and clamped with the fixed base 8. A code disk mounting tool 10 is placed on the rear end cover of the control motor 9, and an encoder code disk 11 is placed on the code disk mounting tool 10. The code disk mounting tool 10 supports the encoder code disk 11 from the bottom, and the rear output shaft passes through the code disk mounting tool 10 and is detachably connected to the encoder code disk 11.

[0030] An encoder reading head module 12 is detachably installed on one side of the rear end cover of the control motor 9. A positioning hole is opened on the rear end cover of the control motor 9. A positioning column is provided on the encoder reading head module 12. The positioning column is inserted into the positioning hole for quick installation, thereby ensuring that the installation position of the encoder reading head module 12 on each control motor 9 remains consistent.

[0031] A mounting hole 13 is provided in the middle of the encoder code disc 11, and the rear output shaft extends into the mounting hole 13. A locking screw 14 is threadedly connected to one side of the mounting hole 13, and the rear output shaft and the encoder code disc 11 are locked by the locking screw 14; a Z-phase engraved line is provided on the encoder code disc 11 corresponding to the initial position of the Z-phase signal.

[0032] The encoder reading head module 12, the stepping motor 6, the cylinder 22 are electrically connected to the external controller.

[0033] like Figure 4 As shown, the rotating mechanism includes a rotating shaft 16, the upper end of the rotating shaft 16 is connected to the coupling 7, the lower end of the rotating shaft 16 is fixedly connected to a mounting plate 17, a pin 18 is installed on the mounting plate 17, and an end hole 15 is opened on the surface of the encoder code disk 11 around the mounting hole 13. The rotating mechanism is inserted into the end hole 15 on the surface of the encoder code disk 11 through the pin 18, thereby driving the encoder code disk 11 to rotate on the rear output shaft; the pin 18 is a retractable structure, the pin 18 is inserted into the end hole 15 and fits tightly with the end hole 15, so that the pin 18 can be stably inserted into the end hole 15, so that the rotating mechanism can stably drive the encoder code disk 11 to rotate.

[0034] A support block 19 is fixedly connected to one side of the slider 4, and the support block 19 is arranged under the mounting platform 5. The rotating shaft 16 passes through the support block 19 and is rotatably connected to the support block 19 through a bearing. The supporting and limiting function of the support block 19 ensures that the rotating shaft 16 can rotate stably without swinging when it is driven by the stepping motor 6 to rotate.

[0035] like Figure 2 , Figure 3 As shown, the bracket 2 is provided with a guide groove 20, and the guide groove 20 is provided with two groups and symmetrically distributed on both sides of the slide groove 3. A guide block 21 is installed on the side of the slider 4 away from the mounting platform 5 corresponding to the guide groove 20. The guide block 21 is slidably set in the guide groove 20. The guide block 21 and the guide groove 20 cooperate to make the sliding of the slider 4 more stable.

[0036] like Figure 5 As shown, a U-shaped notch is provided at one end of the code disk tooling 10, and the rear output shaft passes through the U-shaped notch and fits inside the U-shaped notch. By setting the U-shaped notch, it is convenient to disassemble the code disk tooling 10 from between the encoder code disk 11 and the control motor 9.

[0037] like Figure 6-8 As shown, the lower end of the front output shaft is a D-shaped flat wire structure, and the fixed base 8 is provided with a D-shaped output shaft hole 23. The lower end of the front output shaft is adapted to the D-shaped output shaft hole 23. Through the D-shaped flat wire structure at the lower end of the front output shaft and the D-shaped output shaft hole 23 on the fixed base 8, the D-shaped flat wire is positioned and inserted into the D-shaped output shaft hole 23, so that the control motor 9 is positioned and placed on the fixed base 8 for fixation, thereby fixing the initial positions of the front output shaft and the rear output shaft of the control motor 9.

[0038] The specific principle is as follows: the control motor 9 is placed on the fixed base 8, the lower end of the front output shaft is positioned and docked with the D-shaped output shaft hole 23, and the control motor 9 is installed between the fixed base 8, so that the control motor 9 is positioned and installed on the fixed base 8; the code disk installation tooling 10 is placed on the rear end cover of the control motor 9, and the U-shaped notch is movably engaged with the rear output shaft; the encoder code disk 11 is sleeved on the rear output shaft through the installation hole 13, and the encoder code disk 11 is placed on the code disk installation tooling 10; the cylinder 22 drives the slider 4 to slide downward along the slide groove 3, drives the installation platform 5 to move to the set position, manually fine-tunes the rotating mechanism, inserts the pin 18 into the end hole 15 on the encoder code disk 11, and the stepper motor 6 drives the rotating mechanism to rotate, thereby driving the encoder The encoder disc 11 rotates on the rear output shaft; the Z phase engraved line on the encoder disc 11 rotates slowly with the encoder disc 11, and when the Z phase engraved line just passes through the encoder reading head module 12, the encoder disc 11 outputs a Z phase signal, and the signal is fed back to the external controller, and the external controller controls the stepper motor 6 to stop rotating and lock it at the current position; at this time, the operator tightens the locking screw 14 to fix the encoder disc 11 on the rear output shaft of the control motor 9; the initial position of the front output shaft of each control motor 9 and the initial position of the Z phase engraved line of the encoder disc 11 are effectively guaranteed, so that the initial positions remain consistent, thereby achieving consistent movement of multiple machines produced in large quantities, synchronized production rhythms, and ensuring the unified flow of each process on the production line.

[0039] A person skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. An encoder zeroing device, comprising a base plate (1), on which a bracket (2) is fixedly mounted, characterized in that: A slide groove (3) is provided in the middle of the bracket (2), a slider (4) is slidably provided in the slide groove (3), a mounting platform (5) is fixedly connected to one side of the slider (4), a stepper motor (6) is fixedly installed on the mounting platform (5), an output end of the stepper motor (6) passes through the mounting platform (5) and is connected to a coupling (7), and the output end of the stepper motor (6) is connected to a rotating mechanism through the coupling (7), a fixed base (8) is also fixedly installed on the bottom plate (1) below the mounting platform (5), a control motor (9) is installed on the fixed base (8), the upper and lower ends of the control motor (9) are respectively a rear output shaft and a front output shaft, and the front output shaft is positioned and clamped with the fixed base (8), a code disk tooling (10) is placed on the rear end cover of the control motor (9), an encoder code disk (11) is placed on the code disk tooling (10), the rear output shaft passes through the code disk tooling (10) and is detachably connected to the encoder code disk (11), and an encoder reading head module (12) is detachably installed on one side of the rear end cover of the control motor (9).

2. The encoder zeroing device according to claim 1, characterized in that: The encoder code disc (11) is provided with a mounting hole (13) in the middle, and the rear shaft extends into the mounting hole (13). A locking screw (14) is threadedly connected to one side of the mounting hole (13), and the rear shaft and the encoder code disc (11) are locked by the locking screw (14); and an end hole (15) is provided on the surface of the encoder code disc (11) around the mounting hole (13).

3. The encoder zeroing device according to claim 1, characterized in that: The rotating mechanism comprises a rotating shaft (16), the upper end of the rotating shaft (16) is connected to the coupling (7), the lower end of the rotating shaft (16) is fixedly connected to a mounting plate (17), a pin (18) is mounted on the mounting plate (17), and the pin (18) is a retractable structure.

4. The encoder zeroing device according to claim 3, characterized in that: A support block (19) is fixedly connected to one side of the sliding block (4); the support block (19) is arranged below the mounting platform (5); the rotating shaft (16) passes through the support block (19) and is rotatably connected to the support block (19) via a bearing.

5. The encoder zeroing device according to claim 1, characterized in that: The bracket (2) is provided with a guide groove (20), and the guide grooves (20) are provided with two groups and are symmetrically distributed on both sides of the slide groove (3). A guide block (21) is installed on the side of the slide block (4) away from the installation platform (5) corresponding to the guide groove (20), and the guide block (21) is slidably arranged in the guide groove (20).

6. The encoder zeroing device according to claim 1, characterized in that: A cylinder (22) is fixed on the top of the bracket (2), and an output end of the cylinder (22) is fixedly connected to the slider (4).

7. The encoder zeroing device according to claim 1, characterized in that: A U-shaped notch is provided at one end of the coding disc tooling (10), and the rear output shaft passes through the U-shaped notch and fits inside the U-shaped notch.

8. The encoder zeroing device according to claim 1, characterized in that: The lower end of the front shaft is a D-shaped flat wire structure, the fixed base (8) is provided with a D-shaped shaft hole (23), and the lower end of the front shaft is adapted to fit the D-shaped shaft hole (23).

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