Laser height measuring device based on double-shaft driving control

Abstract

The utility model discloses a laser height measuring device based on double-shaft driving control. The laser height measuring device comprises a substrate and a pair of linear driving modules which are arranged in a crossed mode. One linear driving module is fixedly arranged on the back face of the base plate through a supporting block, the power output end of the linear driving module is connected with the other linear driving module, and the power output end of the other linear driving module is provided with a laser displacement sensor through a sensor support. The arrangement direction of a lens of the laser displacement sensor is perpendicular to the plane where the substrate is located, and a window for the laser displacement sensor to emit and receive laser is formed in the surface of the substrate. According to the utility model, the height dimension of the product is measured in a non-contact manner based on the laser displacement sensor, the transverse and longitudinal positions of the laser displacement sensor are adjusted through the two linear driving modules so as to adjust the measurement position of the laser displacement sensor relative to the product, the operation is simple and convenient, the measurement precision is high, and the reliability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of automated production, in particular to a laser height measuring device based on double-axis drive control. Background Art

[0002] Height measuring instrument, also known as altimeter, is mainly used to measure the height of workpiece products. Height measuring instruments are extremely common in the manufacturing and processing industries. In the production process of many products, measuring product specifications is one of the important items in quality inspection.

[0003] For example, the Chinese patent CN216523567U of the prior art discloses a product height measuring device, including a base and a digital dial indicator, wherein the base is arranged in an inverted U shape, and the digital dial indicator includes a dial, a lower sleeve and a measuring rod, wherein the lower sleeve is fixed in the base, the measuring rod is located below the base, and the dial is located above the base.

[0004] It uses a micrometer fixed on a base. Before use, place the two vertical ends of the base on both sides of the standard part so that the measuring rod of the digital dial indicator rests on the standard part. Then calibrate the digital dial indicator to zero. After the zeroing is completed, place the base on the turnover pallet to be measured, and hold the measuring rod against the turnover pallet to be measured. The size difference between the turnover pallet to be measured and the standard part can be seen from the readings, thereby realizing the measurement of the product height.

[0005] However, the above-mentioned prior art is complicated to operate, and requires two measurements, namely the height data of the standard part and the height data of the product to be measured, and then judging whether there is an error in the product by roughly comparing the height data difference between the two. It can only roughly judge the height situation, but cannot accurately measure the height of the product to be measured, resulting in the measurement accuracy cannot be truly guaranteed; and the digital display dial indicator used therein also has the problem of low measurement accuracy. The above-mentioned height measurement device also requires manual operation, and there is a possibility of product misdetection due to human operating errors. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide a laser height measurement device based on dual-axis drive control, which has a simple structure and layout, is easy to operate and has higher practicality.

[0007] To achieve the above purpose, the utility model adopts the following contents:

[0008] The utility model provides a laser height measuring device based on dual-axis drive control, which comprises a substrate and a pair of linear drive modules arranged in a cross shape; one of the linear drive modules is fixed to the back of the substrate through a support block and its power output end is connected to the other linear drive module, and the power output end of the other linear drive module is installed with a laser displacement sensor through a sensor bracket; the lens arrangement direction of the laser displacement sensor is perpendicular to the plane where the substrate is located, and a window for the laser displacement sensor to emit and receive laser is opened on the surface of the substrate.

[0009] According to a laser height measuring device based on dual-axis drive control provided by the utility model, the linear drive module includes a mounting plate, synchronous pulleys are rotatably provided on both sides of the bottom end of the mounting plate, a synchronous belt is transmission-connected between the two synchronous pulleys, an intermediate connector is provided on one side of the synchronous belt, a driving motor is provided on one side of the mounting plate, and the output end of the driving motor is connected to one of the synchronous pulleys after passing through the mounting plate downwards, so as to drive the synchronous pulley to rotate. In this way, the linear drive module drives one of the synchronous pulleys to rotate clockwise or counterclockwise through the driving motor, thereby cooperating with the other synchronous pulley to realize the clockwise or counterclockwise transmission action of the synchronous belt, thereby realizing the linear control action of the linear drive module.

[0010] Furthermore, a guide rail is arranged in the middle of the bottom end of the mounting plate along its length direction, and a slider is movably arranged on the guide rail in a clamping manner, and the slider is downwardly connected to the intermediate connector. In this way, through the cooperation effect of the slider and the guide rail, the stability of the linear drive module or the laser displacement sensor driven by the synchronous belt to perform linear displacement movement is ensured, and the displacement movement accuracy is guaranteed.

[0011] Furthermore, the two linear drive modules are cross-connected through a receiving block, the top of the receiving block is connected to a slider on one of the linear drive modules, and a through groove for a synchronous belt on one of the linear drive modules to pass through is provided in the middle of the receiving block, and the bottom of the receiving block is connected to a mounting plate on the other linear drive module. The two linear drive modules are connected through the receiving block to ensure that there is no interference problem when the two linear drive modules are displaced and staggered.

[0012] Furthermore, the intermediate connecting body includes a slider connecting block, a clamping plate is fixed to the inner side of the slider connecting block by a plurality of screws, and one side belt of the synchronous belt is clamped between the slider connecting block and the clamping plate, so as to facilitate disassembly, assembly and adjustment.

[0013] Wherein, a transparent glass sheet is installed on the window to protect the laser displacement sensor.

[0014] Wherein, a protective cover body for surrounding the two linear drive modules is arranged on the substrate, and the internal linear drive modules and components such as laser displacement sensors are shielded by the external protective structure to achieve the purpose of protection.

[0015] Compared with the prior art, the utility model has the following technical effects: the utility model has a simple structure and a reasonable design; it uses a laser displacement sensor to measure the height dimension of a product in a non-contact manner, and adjusts the lateral and longitudinal positions of the laser displacement sensor through two linear drive modules to adjust the measurement position of the laser displacement sensor relative to the product, and has easy operation, high measurement accuracy and good reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0017] Figure 1 It is a structural schematic diagram of a laser height measurement device (hidden substrate) based on dual-axis drive control according to an embodiment of the utility model;

[0018] Figure 2 It is a structural schematic diagram of a linear drive module according to an embodiment of the utility model;

[0019] Figure 3 It is a partial schematic diagram of the connection position of two linear drive modules according to an embodiment of the utility model;

[0020] Figure 4 It is a schematic diagram of a laser height measuring device in other modes of the utility model;

[0021] 1-base plate, 2-support block, 3-linear drive module, 4-sensor bracket, 5-laser displacement sensor, 6-receiving block, 7-transparent glass sheet, 8-protective cover; 11-window, 31-mounting plate, 32-synchronous pulley, 33-synchronous belt, 34-drive motor, 35-intermediate connector, 36-guide rail, 37-slider, 61-through groove, 351-slider connecting block, 352-clamp. DETAILED DESCRIPTION

[0022] In order to explain the present invention more clearly, the present invention is further described below in conjunction with preferred embodiments. Those skilled in the art should understand that the following specific description is illustrative rather than restrictive, and should not be used to limit the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0024] See also Figures 1 to 4 As shown. The embodiment of the utility model proposes a laser height measurement device based on dual-axis drive control, including a substrate 1 and a pair of linear drive modules 3 arranged in a cross shape, one linear drive module realizes displacement in the horizontal direction, and the other linear drive module realizes displacement in the vertical direction. Specifically, one linear drive module is fixed to the back of the substrate 1 through a support block 2 and its power output end is connected to the other linear drive module, and the power output end of the other linear drive module is installed with a laser displacement sensor 5 through a sensor bracket 4, that is, the first linear drive module controls the second linear drive module to perform linear displacement in the horizontal direction, and then the second linear drive module controls the laser displacement sensor to perform linear displacement in the vertical direction, so as to realize the movement adjustment of the laser displacement sensor in the horizontal and vertical directions.

[0025] The lens arrangement direction of the laser displacement sensor 5 is perpendicular to the plane where the substrate 1 is located, and a window 11 for the laser displacement sensor 5 to emit and receive laser light is provided on the surface of the substrate 1 .

[0026] The laser height measurement device provided in this embodiment uses a laser displacement sensor to measure the height dimension of a product in a non-contact manner, and adjusts the lateral and longitudinal positions of the laser displacement sensor through two linear drive modules to adjust the measurement position of the laser displacement sensor relative to the product.

[0027] In this embodiment, the linear drive module 3 includes a mounting plate 31, and synchronous pulleys 32 are rotatably provided on both sides of the bottom end of the mounting plate 31, and a synchronous belt 33 is connected between the two synchronous pulleys 32. An intermediate connector 35 is provided on one side of the synchronous belt 33, and a driving motor 34 is provided on one side of the top of the mounting plate 31. The output end of the driving motor 34 passes through the mounting plate 31 downward and is connected to one of the synchronous pulleys 32 to drive the synchronous pulley to rotate. In this way, the linear drive module drives one of the synchronous pulleys to rotate clockwise or counterclockwise through the driving motor, thereby cooperating with the other synchronous pulley to realize the clockwise or counterclockwise transmission action of the synchronous belt, thereby realizing the linear control action of the linear drive module.

[0028] Based on the above solution, a guide rail 36 is arranged in the middle of the bottom end of the mounting plate 31 along its length direction, and a slider 37 is movably arranged on the guide rail 36 in a clamping manner, and the slider 37 is downwardly connected to the intermediate connector 35. In this way, through the cooperation effect of the slider and the guide rail, the stability of the linear drive module or the laser displacement sensor driven by the synchronous belt to perform linear displacement motion is ensured, and the displacement motion accuracy is ensured.

[0029] The two linear drive modules 3 are cross-connected through a receiving block 6, the top of the receiving block 6 is connected to the slider 37 on one of the linear drive modules, and the middle part of the receiving block 6 is provided with a through groove 61 for the synchronous belt 33 on one of the linear drive modules to pass through, the bottom of the receiving block 6 is connected to the mounting plate 31 on the other linear drive module, and the sensor bracket 4 is connected to the slider 37 on the other linear drive module. The two linear drive modules are connected through the receiving block to ensure that there will be no interference problem when the two linear drive modules are displaced and staggered.

[0030] In this embodiment, the intermediate connector 35 includes a slider connecting block 351, a clamping plate 352 is fixed to the inner side of the slider connecting block 351 by a plurality of screws, and one side of the synchronous belt 33 is clamped between the slider connecting block 351 and the clamping plate 352, so as to facilitate disassembly, assembly and adjustment.

[0031] In other embodiments, a transparent glass sheet 7 is installed on the window 11, and a protective cover 8 for surrounding the two linear drive modules 3 is provided on the substrate 1. The outer protective structure is used to shield the internal linear drive module and laser displacement sensor and other components to achieve the purpose of protection.

[0032] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A laser height measurement device based on dual-axis drive control, characterized in that: It includes a base plate and a pair of linear drive modules arranged in a cross shape; One of the linear drive modules is fixed to the back of the substrate through a support block and its power output end is connected to another linear drive module. The power output end of the other linear drive module is installed with a laser displacement sensor through a sensor bracket; the lens layout direction of the laser displacement sensor is perpendicular to the plane of the substrate, and a window for the laser displacement sensor to emit and receive laser is opened on the surface of the substrate.

2. A laser height measurement device based on dual-axis drive control according to claim 1, characterized in that: The linear drive module includes a mounting plate, and synchronous pulleys are rotatably provided on both sides of the bottom end of the mounting plate, a synchronous belt is transmission-connected between the two synchronous pulleys, an intermediate connector is provided on one side of the synchronous belt, and a driving motor is provided on one side of the top of the mounting plate, and the output end of the driving motor passes downward through the mounting plate and is connected to one of the synchronous pulleys to drive the synchronous pulleys to rotate.

3. A laser height measurement device based on dual-axis drive control according to claim 2, characterized in that: A guide rail is arranged in the middle of the bottom end of the mounting plate along its length direction, and a slider is movably arranged on the guide rail in a clamping manner, and the slider is downwardly connected to the middle connector.

4. The laser height measuring device based on dual-axis drive control according to claim 3, characterized in that: The two linear drive modules are cross-connected via a connecting block, the top of which is connected to a slider on one of the linear drive modules, and a through groove is provided in the middle of the connecting block for the synchronous belt on one of the linear drive modules to pass through, and the bottom of the connecting block is connected to a mounting plate on the other linear drive module.

5. The laser height measurement device based on dual-axis drive control according to claim 4, characterized in that: The intermediate connecting body comprises a slider connecting block, a clamping plate is fixed on the inner side of the slider connecting block by a plurality of screws, and one side belt of the synchronous belt is clamped between the slider connecting block and the clamping plate.

6. A laser height measurement device based on dual-axis drive control according to any one of claims 1 to 5, characterized in that: A transparent glass sheet is installed on the window.

7. The laser height measurement device based on dual-axis drive control according to claim 6, characterized in that: A protective cover body for surrounding the two linear drive modules is arranged on the substrate.

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