An optimized multi-functional test platform for linear motor encoders

Abstract

This utility model relates to the field of testing platform technology, and discloses an optimized multifunctional testing platform for linear motor encoders. It includes a servo driver, a base, a linear motor stator, a linear motor mover, a guide rail slide, a limit block, a scale slide, a guide rail, an encoder reader, an encoder fixing fixture, and an encoder scale. The servo driver is fixed to one side of the base, the linear motor stator is fixed to the middle area of ​​the base, the linear motor mover is rigidly connected to the guide rail slide, and the guide rail is fixed to the base and slidably engaged with the guide rail slide. The scale slide is fixed to the guide rail slide, and the encoder scale is mounted on the scale slide. The encoder fixing fixture is fixed to the base and is used to hold the encoder reader and is positioned opposite to the encoder scale. It has advantages such as convenient installation, portability and lightweight design, ability to simulate real working conditions, support for system-level verification, and strong versatility. It is suitable for encoder production, quality control, and motor repair testing, and can improve testing efficiency and accuracy.

Description

Technical Field

[0001] This utility model relates to the field of testing platform technology, specifically to an optimized multifunctional testing platform for linear motor encoders. Background Technology

[0002] Linear motors, with their advantages of high speed, high acceleration, and high precision, are widely used in high-end fields such as precision manufacturing, semiconductor equipment, and automated testing. As the core position feedback component of a linear motor, the encoder's performance directly determines the accuracy and stability of the entire motion control system. Therefore, rapid and accurate performance testing is crucial in encoder production, quality control, and motor system maintenance.

[0003] Testing linear motor encoders requires meeting the core requirement of "relative motion between the reader and the tape," but the mounting reference for both relies on a precision mechanical structure. Traditional testing methods struggle to balance efficiency and test accuracy. Simple manual slide table test method: This method uses a simple platform with precision guide rails and a slider. The ruler is attached to the base, and the reading head is installed on the slider. The slider is moved manually, and the signal is observed with an oscilloscope. This method is low-cost and easy to operate, but the movement speed is unstable, the stroke is limited, it cannot simulate real dynamic working conditions, the test items are limited, and the results are highly subjective.

[0004] Complete linear motor module testing method: This method directly uses commercial linear motor modules, installs encoder components according to strict processes, connects servo drivers, and controls the test via a host computer. While this method yields accurate results, the modules are bulky, installation is cumbersome, alignment requirements are high, the equipment is expensive and lacks portability, making it only suitable for laboratory environments.

[0005] Existing solutions fall into two extremes: "low precision / low cost" and "high precision / high cost." They suffer from problems such as cumbersome installation versus precision, portability versus functionality, insufficient dynamic testing capabilities, inability to perform system-level verification, and limited applicability. They are unable to meet the needs of flexible application scenarios such as rapid production line verification, on-site debugging, or off-site technical support. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this utility model provides an optimized multi-functional testing platform for linear motor encoders, achieving convenient installation, portable size, realistic working conditions, comprehensive functions, and universal compatibility. It solves the core pain points of existing solutions and improves the testing efficiency and accuracy of linear motor encoders.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an optimized multi-functional test platform for linear motor encoders, comprising a servo driver, a base, a linear motor stator, a linear motor mover, a guide rail slide, a limit block, a scale slide, a guide rail, an encoder read head, an encoder fixing fixture, and an encoder scale. The servo driver is fixed to one side of the base, the linear motor stator is fixed to the middle area of ​​the base, the linear motor mover is rigidly connected to the guide rail slide, and the guide rail is fixed to the base and slides with the guide rail slide. The tape slide is fixed to the guide rail slide, and the encoder grating is installed on the tape slide; The encoder fixing clamp is fixed to the base and is used to hold the encoder reading head and is set opposite to the encoder grid scale; There are two limiting blocks, which are fixed on both sides of the travel of the guide rail slide on the base.

[0008] Preferably, the encoder fixing fixture is provided with an adjustable clamping head to adapt to encoder reading heads of different specifications.

[0009] Preferably, the encoder scale is fixed to one side of the scale slide by adhesive backing.

[0010] Preferably, the servo driver is provided with an encoder feedback port for connecting the signal output line of the encoder read head.

[0011] Preferably, the servo driver can be connected to an external power supply and a host computer to receive control commands and drive the linear motor actuator to move.

[0012] Preferably, the linear motor mover drives the scale slide and encoder grid scale through the guide rail slide to achieve linear motion relative to the encoder reading head.

[0013] Compared with the prior art, the beneficial effects of this utility model are: Easy and efficient installation: No precision alignment tools are required. The encoder scale is quickly fixed with adhesive backing, and the reader head is quickly clamped with an adjustable clamp. The installation time is significantly reduced compared to traditional linear motor modules, lowering the operating threshold.

[0014] Excellent portability: It adopts a miniaturized and lightweight design, with each component compactly integrated into the base. The overall size is small and the weight is light, which can be easily transported to the production line, on-site debugging or off-site technical support scenarios, flexibly adapting to the needs of multiple scenarios.

[0015] Realistic operating condition simulation: Integrating a servo drive system and a precision linear motor module, it can provide programmable speed, position and motion trajectory, accurately simulate the real dynamic operating conditions of linear motors, and support comprehensive static and dynamic performance testing.

[0016] System-level verification capability: The platform constitutes a complete micro linear servo closed-loop system, which can verify the encoder's performance in a real closed-loop control environment, as well as its compatibility with the driver and motor. The test results are more valuable for reference.

[0017] High versatility: The adjustable design of the encoder fixture can be adapted to various specifications and models of encoder readers, making it a multi-purpose device that reduces equipment and time costs for testing encoders of different specifications and improves testing efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the present invention.

[0019] In the diagram: 1. Servo driver; 2. Base; 3. Linear motor stator; 4. Linear motor mover; 5. Guide rail slide; 6. Limit block; 7. Scale slide; 8. Guide rail; 9. Encoder reader; 10. Encoder fixing fixture; 11. Encoder scale. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-2 This utility model provides the following technical solution: an optimized multi-functional testing platform for linear motor encoders, the testing platform mainly consists of ten core components, each with a clear connection relationship and functional division: Base 2: Serves as the mounting foundation for the entire platform, providing stable support for other components and ensuring structural stability during testing.

[0022] Servo driver 1: It is fixed to one side of the base 2 with screws. It has a built-in drive circuit and control module, which is used to receive instructions from the host computer and drive the linear motor to move. It also provides an encoder feedback port to realize signal transmission.

[0023] Linear motor stator 3 and mover 4: The linear motor stator 3 is fixed in the middle area of ​​the base 2, and the linear motor mover 4 is rigidly connected to the guide rail slide 5 by screws, forming a motion power source.

[0024] Guide rail slide 5 and guide rail 8: The guide rail 8 is fixed to the base 2 by screws, and the guide rail slide 5 is slidably mounted on the guide rail 8, receiving the power of the linear motor mover 4 and driving the movement of subsequent components.

[0025] Ruler slide 7: It is fixed to the guide rail slide 5 by screws and is used to install the encoder scale 11. It can move synchronously with the guide rail slide 5.

[0026] Encoder scale 11 and reader 9: The encoder scale 11 is fixed to one side of the scale slide 7 with adhesive backing, and the encoder reader 9 is clamped on the encoder fixing fixture 10. The two are arranged opposite to each other to form the core testing components.

[0027] Encoder fixing fixture 10: It is fixed to the base 2 by screws and is equipped with an adjustable clamping head to adapt to encoder reading heads 9 of different specifications, so as to realize quick clamping and fine-tuning of position.

[0028] Limiting blocks 6: Two limiting blocks are fixed on both sides of the travel of the guide rail slide 5 on the base 2, which are used to limit the range of motion of the guide rail slide 5, prevent the moving part from flying out accidentally, and ensure equipment safety.

[0029] Integrated principle: The servo driver, small precision linear motor module and encoder quick-installation mechanism are compactly integrated through a portable base. The driver and motor are pre-connected with internal cables, avoiding the cumbersome and incorrect external wiring and simplifying the operation process.

[0030] Quick installation principle: The scale slide 7 provides a standardized installation plane and quick fixing structure. The encoder scale 11 can be directly fixed with adhesive backing. The encoder fixing clamp 10 adopts an adjustable design, which can quickly install the reader and finely adjust its position without the need for precision alignment tools, simulating the structural relationship of a real linear motor while simplifying the installation.

[0031] The principle of real working condition simulation: The host computer sends programmable control instructions, and the servo driver 1 drives the linear motor module to generate precise and controllable linear motion, which drives the encoder scale 11 to move relative to the reading head 9, providing dynamic test conditions consistent with real applications.

[0032] Specific workflow: Encoder installation: Quickly fix the encoder scale 11 onto the scale slide 7 using adhesive backing; place the encoder read head 9 into the encoder fixing fixture 10, clamp it with the adjustable clamping head, and fine-tune the position of the read head to meet the installation gap and alignment requirements with the scale.

[0033] Electrical connection: Connect the signal output line of the encoder reader 9 to the encoder feedback port of the servo driver 1; connect the servo driver 1 to the external power supply, the host computer (PC) and the linear motor module respectively to complete the circuit closed loop.

[0034] Test execution: Customized motion commands are sent through the host computer software, such as uniform motion at a specific speed, positioning motion at a specific distance, reciprocating cyclic motion, etc. After receiving the command, the servo driver 1 drives the linear motor mover 4 to move, which drives the scale slide 7 and the encoder scale 11 to move synchronously through the guide rail slide 5, realizing the relative movement between the scale and the reading head.

[0035] Performance evaluation: The stability of the system's motion control is observed in real time through host computer software, or by using an external oscilloscope and signal analyzer to test the signal quality (such as Sin / Cos waveform integrity, A / B pulse accuracy) and position feedback accuracy of the encoder output, thereby completing a comprehensive evaluation of the encoder's performance.

[0036] The embodiments of this utility model will be further described in detail below, taking into account specific structural parameters and application scenarios: 1. Selection of core component parameters Base 2: Made of aviation aluminum alloy, with dimensions of 400mm×200mm×50mm and a weight of ≤5kg, it combines structural strength with lightweight requirements. The surface is anodized to improve wear resistance and corrosion resistance.

[0037] Linear motor module: A small precision linear motor is selected, with a stator length of 300mm, a maximum mover stroke of 200mm, a positioning accuracy of ±0.01mm, and a maximum movement speed of 0.5m / s, to meet different dynamic testing requirements.

[0038] Guide rail 8: High-precision linear guide rail is adopted, with a parallelism error of ≤0.005mm / m, to ensure smooth movement of guide rail slide 5 and reduce the impact of mechanical vibration on test accuracy.

[0039] Encoder fixing fixture 10: The clamping head adjustment range is 5mm-50mm, which can be used with mainstream linear motor encoder reading heads on the market. The clamping accuracy is ±0.02mm, ensuring the stability of the reading head installation.

[0040] Servo Driver 1: Supports pulse commands and Modbus communication protocol, can receive various motion commands from the host computer, and the encoder feedback port is compatible with differential signals and single-ended signals, adapting to encoders of different output types.

[0041] 2. Assembly and debugging requirements Component assembly: When installing the linear motor stator 3 and the guide rail 8, the parallelism error must be ≤0.01mm. After the guide rail slide 5 and the linear motor mover 4 are rigidly connected, the motion resistance is ≤5N to ensure smooth and unobstructed movement.

[0042] Installation of limit block 6: The two limit blocks are 10mm away from the end point of the travel of the guide rail slide 5. They are made of elastic buffer material to avoid damage to the components caused by hard collisions. At the same time, they trigger the electrical limit switch to achieve double protection.

[0043] Electrical debugging: The communication delay between servo driver 1 and the host computer is ≤10ms, and the motor motion response time is ≤50ms, to ensure timely execution of instructions and accuracy of motion control.

[0044] 3. Verification of practical application effects In encoder production control scenarios, this platform is used to test a certain model of linear motor encoder: The installation process takes only 2 minutes, which is more than 90% more efficient than traditional linear motor modules (installation time ≥ 30 minutes); During testing, the motion speed was set to 0.3 m / s and the reciprocating stroke to 150 mm. The encoder position feedback error remained stable within ±0.008 mm, and the signal waveform showed no distortion. The results were 98% consistent with the test results under actual linear motor operating conditions. Testing can be performed by changing three different encoder heads, without modifying the platform. Only the clamping head needs to be adjusted. The switching time for each specification is ≤30 seconds, which significantly improves versatility and testing efficiency.

[0045] 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. An optimized multi-functional test platform for linear motor encoders, characterized in that: Includes a servo driver (1), a base (2), a linear motor stator (3), a linear motor mover (4), a guide rail slide (5), a limit block (6), a scale slide (7), a guide rail (8), an encoder reader (9), an encoder fixing fixture (10), and an encoder grid scale (11). The servo driver (1) is fixed to one side of the base (2), the linear motor stator (3) is fixed to the middle area of ​​the base (2), the linear motor mover (4) is rigidly connected to the guide rail slide (5), and the guide rail (8) is fixed to the base (2) and slides with the guide rail slide (5). The tape slide (7) is fixed to the guide rail slide (5), and the encoder grid (11) is installed on the tape slide (7). The encoder fixing clamp (10) is fixed to the base (2) and is used to clamp the encoder reading head and set opposite to the encoder grid scale; There are two limiting blocks (6), which are fixed on both sides of the travel of the guide rail slide (5) on the base (2).

2. The optimized multifunctional test platform for linear motor encoders according to claim 1, characterized in that: The encoder fixing fixture (10) is equipped with an adjustable clamping head to adapt to encoder reading heads (9) of different specifications.

3. The optimized multifunctional test platform for linear motor encoders according to claim 1, characterized in that: The encoder scale (11) is fixed to one side of the scale slide (7) by adhesive backing.

4. An optimized multifunctional test platform for linear motor encoders according to claim 1, characterized in that: The servo driver (1) is equipped with an encoder feedback port for connecting the signal output line of the encoder read head (9).

5. An optimized multifunctional test platform for linear motor encoders according to claim 1, characterized in that: The servo driver (1) can be connected to an external power supply and a host computer to receive control commands and drive the linear motor mover (4) to move.

6. An optimized multifunctional test platform for linear motor encoders according to claim 1, characterized in that: The linear motor mover (4) drives the tape slide (7) and the encoder grid scale (11) through the guide rail slide (5) to achieve linear motion relative to the encoder reading head (9).

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