A testing device for a step motor driver

Abstract

A kind of testing device of step driver finished product, testing device includes: substrate, fixed part, integrally formed in substrate;Sliding part is fixedly connected to substrate, and located in the side of substrate with fixed part, sliding part includes fixedly connected to the limiting portion of fixed part, also includes fixedly connected between limiting portion, and extend along the slide bar of first direction, and located between the pusher of two slide bars;Wherein, pusher includes slidingly connected to the pusher of slide bar, also includes fixedly connected to the needle of pusher, and fixedly connected to the handle of pusher, and located in the side of pusher away from needle, step driver finished product is fixed in fixed part, and step driver is equipped with the connecting terminal in first direction on needle alignment, when pushing and pulling handle, pusher slides along slide bar, and drives needle to insert or pull out connecting terminal along first direction.

Description

Technical Field

[0001] This utility model relates to the field of motor control and testing technology, and in particular to a testing device for a finished stepper driver. Background Technology

[0002] A stepper driver is an electronic device used to control the movement of a stepper motor. It precisely controls the motor's rotation angle and speed by receiving pulse signals and is widely used in automation equipment, CNC machine tools, 3D printers, and other fields. The performance of the stepper driver directly affects the stability and accuracy of the entire system; therefore, testing the finished driver is crucial during the production process.

[0003] Currently, the testing of finished stepper drivers mainly relies on manual operation. Testers need to insert the pins connecting the motor and signal terminals one by one into the interface of the driver under test. After completing the test, they then unplug these terminals and insert them into the interface of the next driver. This testing method has several obvious drawbacks: First, the driver's connection terminals are usually designed to be quite tight, requiring considerable force to insert and remove the pins. This not only increases the workload of the testers but also easily leads to fatigue. Second, manual alignment during insertion and removal is not only inefficient but may also damage the terminals or the driver itself due to improper operation and failure to accurately align the pins with the driver's interface, affecting the accuracy of the test and the reliability of the product.

[0004] Therefore, it is necessary to provide a test device for a finished stepper driver that avoids misalignment during pin insertion and removal and improves the ease of pin insertion and removal. Utility Model Content

[0005] The purpose of this invention is to provide a testing device for a finished stepper driver that avoids misalignment during pin insertion and removal and improves the convenience of pin insertion and removal.

[0006] According to one aspect of this application, a testing apparatus for a finished stepper driver is provided, the testing apparatus comprising:

[0007] substrate,

[0008] The fixing part is integrally formed on the substrate;

[0009] A sliding part is fixedly connected to the substrate and located on the side of the substrate where the fixed part is provided. The sliding part includes a limiting part fixedly connected to the fixed part, a sliding rod fixedly connected between the limiting parts and extending along a first direction, and a pushing part located between the two sliding rods.

[0010] The pushing part includes a pushing member slidably connected to the slide rod, a pin fixedly connected to the pushing member, and a handle fixedly connected to the pushing member and located on the side of the pushing member away from the pin. The stepper driver is fixed in the fixing part. The stepper driver is provided with a connecting terminal that is aligned with the pin in the first direction. Pushing or pulling the handle causes the pushing member to slide along the slide rod and drive the pin to insert or pull out of the connecting terminal in the first direction.

[0011] More preferably, the testing apparatus further includes:

[0012] The signal light assembly is fixedly connected to the base plate and is located on the side of the base plate where the fixing part is provided;

[0013] A button assembly is fixedly connected to the base plate and located on the side of the base plate where the indicator light assembly is located;

[0014] When viewed along a direction perpendicular to the surface of the substrate, the button group and the indicator light group are arranged opposite to each other.

[0015] More preferably, the signal light group includes an alarm signal indicator light, a direction signal indicator light arranged side by side with the alarm signal indicator light, and an enable signal indicator light arranged side by side with the direction signal indicator light and located on the side of the direction signal indicator light away from the alarm signal indicator light.

[0016] More preferably, the button group includes a start button, a stop button arranged side by side with the start button, and a reverse button arranged side by side with the stop button and located on the side of the stop button opposite to the start button.

[0017] More preferably, the testing apparatus further includes:

[0018] The first switch group is fixedly connected to the base plate and is located on the side of the base plate where the button group is located, and on the side of the button group that is away from the signal light group.

[0019] The second switch group is fixedly connected to the substrate and is located on the side of the substrate where the first switch group is located, and on the side of the first switch group away from the button group.

[0020] More preferably, the first switch group includes a first switch, a second switch arranged side by side with the first switch, and a third switch arranged side by side with the second switch and located on the side of the second switch away from the first switch.

[0021] More preferably, the second switch group includes a fourth switch, a fifth switch arranged side by side with the fourth switch, and a sixth switch arranged side by side with the fifth switch and located on the side of the fifth switch away from the fourth switch.

[0022] More preferably, a first knob group is fixedly connected to one side of the surface of the substrate where the fixing part is provided, a second knob group is fixedly connected to the first knob group, and a third knob group is fixedly connected to the second knob group and located on the side of the second knob group away from the first knob group.

[0023] More preferably, the substrate has a motor terminal and a fourth knob group arranged side by side with the motor terminal on the side opposite to the side where the first knob group, the second knob group and the third knob group are provided.

[0024] More preferably, the ejector pin is electrically connected to the first knob group, the second knob group, the third knob group, and the fourth knob group, respectively;

[0025] The first knob group, the second knob group, the third knob group, and the fourth knob group are electrically connected to the motor terminals, respectively.

[0026] This utility model has the following beneficial effects:

[0027] The stepper driver is fixedly connected within the fixing part, and the stepper driver has a connecting terminal that aligns with the ejector pin in the first direction. This prevents misalignment of the ejector pin when it is inserted into or removed from the connecting terminal, improving the durability of the ejector pin and the connecting terminal. Furthermore, by pushing or pulling the handle, the pusher slides along the slide rod and drives the ejector pin to insert or remove from the connecting terminal in the first direction. This allows the ejector pin to be repeatedly inserted into or removed from different stepper driver connectors by pushing or pulling the handle, replacing the manual alignment and insertion / removal method and improving the convenience of ejector pin insertion and removal. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the planar structure of the testing device described in one embodiment of this application;

[0030] Figure 2This is a schematic diagram of the planar structure of the handle in the testing device according to one embodiment of this application after it is pushed along the first direction;

[0031] Figure 3 This is a schematic diagram of the planar structure of the test device described in one embodiment of this application when a stepper driver is installed;

[0032] Figure 4 This is a schematic diagram of the planar structure of the test device described in one embodiment of the present application, in which a stepper driver is installed and a pin is inserted into a connection terminal;

[0033] Reference numerals: 100, Test device; 10, Base plate; 11, First knob group; 12, Second knob group; 13, Third knob group; 14, Motor terminal; 15, Fourth knob group; 20, Fixing part; 30, Sliding part; 31, Limiting part; 32, Slide rod; 33, Pushing part; 33A, Pushing member; 33B, Ejector pin; 33C, Handle; 40, Signal light group; 41, Alarm signal indicator light; 42, Direction signal indicator light; 43, Enable signal indicator light; 50, Button group; 51, Start button; 52, Stop button; 53, Reverse button; 60, First switch group; 61, First switch; 62, Second switch; 63, Third switch; 70, Second switch group; 71, Fourth switch; 72, Fifth switch; 73, Sixth switch; 200, Finished stepper driver; 110, Connection terminal; F1, First direction. Detailed Implementation

[0034] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0035] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] Please refer to Figure 1 - Figure 4 One embodiment of this application provides a testing device 100 for a finished stepper driver 200, the testing device 100 including: a substrate 10, a fixing part 20 and a sliding part 30.

[0038] The fixing part 20 is integrally formed on the substrate 10. The sliding part 30 is fixedly connected to the substrate 10 and is located on the side of the substrate 10 where the fixing part 20 is provided. The sliding part 30 includes a limiting part 31 fixedly connected to the fixing part 20, a slide rod 32 fixedly connected between the limiting parts 31 and extending along the first direction F1, and a pushing part 33 located between the two slide rods 32. The pushing part 33 includes a pushing member 33A slidably connected to the slide bar 32, a pin 33B fixedly connected to the pushing member 33A, and a handle 33C fixedly connected to the pushing member 33A and located on the side of the pushing member 33A away from the pin 33B. The stepper driver finished product 200 is fixed in the fixing part 20. The stepper driver finished product 200 is provided with a connection terminal 110 aligned with the pin 33B in the first direction F1. Pushing or pulling the handle 33C causes the pushing member 33A to slide along the slide bar 32 and drives the pin 33B to insert or pull out of the connection terminal 110 in the first direction F1.

[0039] The device first provides a rigid positioning reference for the driver under test through an integrally formed fixing part 20. This design ensures that the driver connection terminal 110 and the test pin 33B always maintain a precise spatial correspondence, fundamentally solving the alignment deviation problem commonly encountered during manual insertion and removal, and effectively reducing the wear rate of the terminals. The sliding part 30 is equipped with a guiding system consisting of a limiting part 31 and a sliding rod 32, which, together with the linear motion mechanism of the pusher 33A, converts the operator's pushing and pulling action into the pure axial movement of the pin 33B. This design completely eliminates the lateral force during manual operation, reducing the insertion and removal force to a certain extent. Secondly, the structure ensures the consistency of the stroke for each insertion and removal through the mechanical limiting part 31, and stably controls the contact resistance during testing. The movement trajectory of the handle 33C is achieved by rotating the handle 33C through a rotating screw and coupling structure, which drives the pusher 33A to move axially in the first direction F1. This increased stroke reduces the driving force required for axial insertion and removal, reducing the hand fatigue of the tester.

[0040] More preferably, the testing device 100 further includes: a group of indicator lights 40 and a group of buttons 50.

[0041] The signal light assembly 40 is fixedly connected to the substrate 10 and is located on the side of the substrate 10 where the fixing part 20 is located. The button assembly 50 is fixedly connected to the substrate 10 and is located on the side of the substrate 10 where the signal light assembly 40 is located. Viewed along a direction perpendicular to the surface of the substrate 10, the button assembly 50 and the signal light assembly 40 are arranged opposite to each other.

[0042] The design of the indicator light group 40 and button group 50 is meticulously crafted based on dual considerations of human-computer interaction efficiency and test process visualization. By arranging the indicator light group 40 and button group 50 opposite each other on the same side of the operating area of ​​the substrate 10, optimal control logic for the test process is achieved. This arrangement allows the operator's line of sight to naturally cover the status of the indicator lights while pushing or pulling the handle 33C, and their fingers can easily operate the control buttons, forming an efficient operational closed loop. When the tester places the driver into the fixing part 20, their line of sight will naturally be directed towards the indicator light group 40, at which point changes in the status of the indicator lights can be captured immediately. The specially designed side-by-side indicator light layout conforms to the horizontal scanning habits of the human eye, improving the speed of fault identification for the operator.

[0043] More preferably, the signal light group 40 includes an alarm signal indicator 41, a direction signal indicator 42 arranged side by side with the alarm signal indicator 41, and an enable signal indicator 43 arranged side by side with the direction signal indicator 42 and located on the side of the direction signal indicator 42 away from the alarm signal indicator 41.

[0044] The alarm signal indicator 41, direction signal indicator 42, and enable signal indicator 43 are arranged linearly from left to right, constructing a status monitoring system that conforms to the standard testing procedure for stepper drivers. This design places the most important alarm signal in the leftmost visual priority position because, in actual testing, safety alarm information needs to be captured immediately. The alarm signal indicator 41 monitors the stepper driver's operating status in real time, providing visual alerts in abnormal situations. When the driver experiences overcurrent, overvoltage, overheating, or communication errors, this light will remain constantly lit or flash, reminding the operator to immediately stop the test to avoid damaging the driver or motor. Different devices can be equipped with different flashing modes, such as slow flashing or fast flashing, which can provide a preliminary judgment of fault types such as power abnormalities or signal loss. The direction signal indicator 42 is used to display whether the stepper motor is currently rotating forward or backward. Direction feedback is usually indicated by the light being on and off; for example, an on light usually indicates a high level, corresponding to forward rotation, while an off light usually indicates a low level, corresponding to reverse rotation. The enable signal indicator 43 is used to indicate whether the driver is in working condition, determining whether the motor responds to control signals. It also provides feedback through light on and off states. A light off usually indicates that the driver is enabled, meaning the motor can run. A light on usually indicates that the driver is disabled, meaning the motor has no current and is in a free state.

[0045] More preferably, the button group 50 includes a start button 51, a stop button 52 arranged side by side with the start button 51, and a reverse button 53 arranged side by side with the stop button 52 and located on the side of the stop button 52 opposite to the start button 51.

[0046] The start button 51, positioned on the left as the starting point of the test process, conforms to the left-to-right operating habits of most operators and is used to initiate the test process. The stop button 52, centrally located, allows for quick positioning in emergencies and allows for immediate interruption of the test process. The reverse button 53, located on the right and below the direction signal indicator 42, maintains its correspondence with the indicator and is used to dynamically switch the motor direction.

[0047] More preferably, the testing device 100 further includes: a first switch group 60 and a second switch group 70.

[0048] The first switch group 60 is fixedly connected to the substrate 10 and is located on the side of the substrate 10 where the button group 50 is located, and on the side of the button group 50 away from the indicator light group 40. The second switch group 70 is fixedly connected to the substrate 10 and is located on the side of the substrate 10 where the first switch group 60 is located, and on the side of the first switch group 60 away from the button group 50.

[0049] The first switch group 60 and the second switch group 70 each consist of three rocker switches. When viewed from a direction perpendicular to the surface of the substrate 10, the first switch group 60 and the second switch group 70 are arranged in two rows below the button group 50. There are certain gaps between the first switch group 60 and the second switch group 70, as well as between the first switch group 60 and the button group 50, to prevent accidental contact between the switches and the buttons.

[0050] More preferably, the first switch group 60 includes a first switch 61, a second switch 62 arranged side by side with the first switch 61, and a third switch 63 arranged side by side with the second switch 62 and located on the side of the second switch 62 away from the first switch 61.

[0051] The first switch 61 is a switch for switching between enable and alarm signals, mainly used to intelligently switch between operating and diagnostic modes. The second switch 62 is a switch for switching between pulse direction and spontaneous pulse, mainly used to switch between standard control and self-test conditions to quickly distinguish between driver and control system faults. The third switch 63 is a pulse switch used to enable or disable pulse signals.

[0052] More preferably, the second switch group 70 includes a fourth switch 71, a fifth switch 72 arranged side by side with the fourth switch 71, and a sixth switch 73 arranged side by side with the fifth switch 72 and located on the side of the fifth switch 72 away from the fourth switch 71.

[0053] The fourth switch 71 is a motor switch, used to control the on / off state of the motor output circuit of the test device 100. The fifth switch 72 is an A / B phase switching switch, mainly used for dynamically reconfiguring the motor phase sequence. The sixth switch 73 is a power switch, mainly used to manage the power supply architecture of the entire test device 100.

[0054] More preferably, a first knob group 11 is fixedly connected to one side of the surface of the substrate 10 where the fixing part 20 is provided, a second knob group 12 is fixedly connected to the first knob group 11, and a third knob group 13 is fixedly connected to the second knob group 12 and located on the side of the second knob group 12 away from the first knob group 11.

[0055] The first knob group 11 consists of input power adjustment knobs, primarily used for precise adjustment of the driver's input voltage and current. The second knob group 12 consists of DR / MF signal adjustment knobs, primarily used for combined control of direction and enable signals. The control unit is determined by the switch. The third knob group 13 consists of PU signal adjustment knobs, used for adjusting the pulse signal frequency.

[0056] More preferably, the substrate 10 has a motor terminal 14 and a fourth knob group 15 arranged side by side on the side opposite to the side on which the first knob group 11, the second knob group 12 and the third knob group 13 are provided.

[0057] Among them, motor terminal 14 serves as the core connection hub between the test device 100 and the external stepper motor. It integrates a current sampling resistor to convert the motor phase current into a voltage level signal in real time for use by the entire test device 100. The fourth knob group 15 is the motor waveform adjustment knob of the oscilloscope.

[0058] More preferably, the ejector pin 33B is electrically connected to the first knob group 11, the second knob group 12, the third knob group 13, and the fourth knob group 15, respectively. The first knob group 11, the second knob group 12, the third knob group 13, and the fourth knob group 15 are electrically connected to the motor terminal 14, respectively.

[0059] This electrical connection design constructs a fully closed-loop testing system. The input and output signals of the driver are seamlessly connected to the control circuits of each knob group via the probe 33B. The processed signals are then transmitted to the motor terminal 14 via the knob group, realizing an integrated testing process for signal acquisition, parameter adjustment, and load response. The probe 33B, acting as a signal probe, directly contacts the driver terminal, ensuring lossless transmission of the original signal. Each knob group precisely conditions the signal. Finally, the signal is output to the load motor through the motor terminal 14, forming a complete signal chain.

[0060] In this way, the stepper driver 200 is fixedly connected to the fixing part 20, and the stepper driver 200 is provided with a connection terminal 110 aligned with the ejector pin 33B in the first direction F1. This prevents misalignment of the ejector pin 33B when inserting or removing the connection terminal 110, thus improving the durability of the ejector pin 33B and the connection terminal 110. Furthermore, by pushing and pulling the handle 33C, the pusher 33A slides along the slide bar 32 and drives the ejector pin 33B to insert or remove the connection terminal 110 in the first direction F1. This allows the ejector pin 33B to be repeatedly inserted or removed from different connection terminals 110 of the stepper driver 200 by pushing and pulling the handle 33C, replacing the manual alignment and insertion / removal method and improving the convenience of inserting and removing the ejector pin 33B.

[0061] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A testing device for a finished stepper driver, characterized in that, The testing apparatus includes: substrate, The fixing part is integrally formed on the substrate; A sliding part is fixedly connected to the substrate and located on the side of the substrate where the fixed part is provided. The sliding part includes a limiting part fixedly connected to the fixed part, a sliding rod fixedly connected between the limiting parts and extending along a first direction, and a pushing part located between the two sliding rods. The pushing part includes a pushing member slidably connected to the slide rod, a pin fixedly connected to the pushing member, and a handle fixedly connected to the pushing member and located on the side of the pushing member away from the pin. The stepper driver is fixed in the fixing part. The stepper driver is provided with a connecting terminal that is aligned with the pin in the first direction. Pushing or pulling the handle causes the pushing member to slide along the slide rod and drive the pin to insert or pull out of the connecting terminal in the first direction.

2. The testing device for a finished stepper driver according to claim 1, characterized in that, The testing apparatus also includes: The signal light assembly is fixedly connected to the base plate and is located on the side of the base plate where the fixing part is provided; A button assembly is fixedly connected to the base plate and located on the side of the base plate where the indicator light assembly is located; When viewed along a direction perpendicular to the surface of the substrate, the button group and the indicator light group are arranged opposite to each other.

3. The testing device for a finished stepper driver according to claim 2, characterized in that, The signal light group includes an alarm signal indicator light, a direction signal indicator light arranged side by side with the alarm signal indicator light, and an enable signal indicator light arranged side by side with the direction signal indicator light and located on the side of the direction signal indicator light away from the alarm signal indicator light.

4. The testing device for a finished stepper driver according to claim 3, characterized in that, The button group includes a start button, a stop button arranged side by side with the start button, and a reverse button arranged side by side with the stop button and located on the side of the stop button opposite to the start button.

5. The testing apparatus for a finished stepper driver according to claim 4, characterized in that, The testing apparatus also includes: The first switch group is fixedly connected to the base plate and is located on the side of the base plate where the button group is located, and on the side of the button group that is away from the signal light group. The second switch group is fixedly connected to the substrate and is located on the side of the substrate where the first switch group is located, and on the side of the first switch group away from the button group.

6. The testing apparatus for a finished stepper driver according to claim 5, characterized in that, The first switch group includes a first switch, a second switch arranged side by side with the first switch, and a third switch arranged side by side with the second switch and located on the side of the second switch away from the first switch.

7. The testing apparatus for a finished stepper driver according to claim 6, characterized in that, The second switch group includes a fourth switch, a fifth switch arranged side by side with the fourth switch, and a sixth switch arranged side by side with the fifth switch and located on the side of the fifth switch away from the fourth switch.

8. The testing apparatus for a finished stepper driver according to claim 1, characterized in that, A first knob group is fixedly connected to one side of the surface of the substrate where the fixing part is provided, a second knob group is fixedly connected to the first knob group, and a third knob group is fixedly connected to the second knob group and located on the side of the second knob group away from the first knob group.

9. A testing device for a finished stepper driver according to claim 8, characterized in that, The substrate has a motor terminal and a fourth knob group arranged side by side with the motor terminal on the side opposite to the side where the first knob group, the second knob group and the third knob group are located.

10. A testing device for a finished stepper driver according to claim 9, characterized in that, The ejector pins are electrically connected to the first knob group, the second knob group, the third knob group, and the fourth knob group, respectively. The first knob group, the second knob group, the third knob group, and the fourth knob group are electrically connected to the motor terminals, respectively.

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