A device suitable for efficient measurement of low-grade gauge blocks

Abstract

The present invention discloses a device suitable for efficient measurement of low-grade gauge blocks, belonging to the field of geometric metrology and detection. The present invention includes a measuring frame assembly, a precision displacement measuring assembly, a gauge block automatic positioning assembly, a base assembly, and a control and environment acquisition assembly. The closed-loop motion control of the measuring frame assembly enables the precision displacement measuring assembly to automatically move to a position to be measured according to the specifications of the measured block. The gauge block automatic positioning assembly enables automatic positioning of the standard gauge block and the measured block. The precision displacement measuring assembly enables automatic contact measurement of the gauge block. The control and environment acquisition assembly enables the acquisition and display of gauge block data, and the acquisition of environmental and material temperatures. This further automates the gauge block measurement process and data acquisition processing, thereby resolving the problem of measurement consistency being significantly affected by human factors due to manual shifting forks and manually moving gauge blocks, and improving calibration efficiency.

Description

Technical Field

[0001] The invention relates to a device suitable for high-efficiency measurement of low-grade gauge blocks, belonging to the field of geometric quantity metrology detection. Background Art

[0002] In the field of metrology, gauge blocks of grades 1 and 2 serve as length standards and are the physical basis for the unified length values ​​of units. These blocks are in small quantities, and their accuracy is primarily ensured by submitting them for inspection and tracing them back to national defense or the highest national standards. Gauge blocks of grades 3, 4, and 5 serve as working standards and are widely used in local and national defense metrology institutions at all levels. Due to the large number of gauge blocks of grades 3, 4, and 5, commonly used sets of gauge blocks below 100 mm include 91-block sets, 83-block sets, 46-block sets, 38-block sets, 20-block sets, and 10-block sets, while sets of gauge blocks above 100 mm include 8-block sets and 5-block sets. Furthermore, each manufacturing, maintenance, and metrology unit often has more than one set of gauge blocks. Therefore, with digital metrology becoming a trend and labor costs rising, the use of automated methods to achieve high-efficiency metrology of large quantities of low-grade gauge blocks is an important development direction for low-grade gauge block metrology.

[0003] Currently, the calibration of gauge blocks of sizes 3, 4, and 5 primarily utilizes the comparative measurement method using contact-type, high-precision sensors. This comparative measurement method requires assigning a value to the calibration device by measuring a higher-level gauge block before measuring the measured block. Therefore, measuring gauge blocks of varying sizes requires the use of standard gauge blocks of varying sizes. This requires moving the high-precision displacement sensor to different heights. After these movements, the displacement sensor must be able to retract and reposition to facilitate gauge block movement and data collection during instrument assignment and gauge block measurement. Furthermore, according to the gauge block calibration regulations, only the center value of the standard gauge block needs to be measured when assigning a value to the gauge block calibration instrument. However, measuring the measured block requires five measurements, necessitating the movement of the measured block to different locations to complete the calibration and measurement process.

[0004] Contact-type gauge block calibration devices are based on comparative measurement using contact-type high-precision displacement sensors. The displacement sensors used include contact interferometry, grating, and inductive sensors. Contact interferometers are high-precision metrology devices that use the principle of light wave interference and differential comparative measurement to measure gauge blocks. They are primarily used to calibrate the dimensions of third-grade and lower gauge blocks less than 150 mm. While durable and power-free, they rely solely on human sight readings, which can lead to errors and manual data processing. This makes measuring large quantities of gauge blocks inefficient and requires high personnel requirements. Chinese patent CN201306998Y discloses a contact laser interferometer for second-grade gauge blocks. During measurement, the probe contacts the upper surface of the gauge block, while the lower surface of the gauge block contacts the workbench. A photoelectric converter is added to enable automatic data acquisition. However, the He-Ne laser optical path is expensive and fails to automate measurement and gauge block movement. Grating-type gauge block calibration devices use gratings as displacement sensors to measure gauge blocks and achieve displacement measurement over larger travels. The EMP series from Germany's Feinmess company uses an electric motion slide to automatically move the grating displacement sensor in the vertical direction, improving automation efficiency. However, when measuring gauge blocks using the comparison method, manual movement of the gauge blocks is still required, resulting in a semi-automated state and no further automation improvements. Inductive-type gauge block calibration devices use inductive sensors as high-precision displacement sensors. Their greatest features are their small measuring range and high repeatability. Gauge block detection devices from Germany's Mahr company and Switzerland's TESA company both use manually movable lifting platforms to move the displacement sensor in the vertical direction, and the measured block needs to be moved manually.

[0005] Domestic manufacturers of gauge block calibration devices use a manually movable guide table and a mechanically manually locked slide to achieve large-stroke movement of the displacement sensor and fixation after movement, and then use the fine-adjustment displacement table at the bottom of the installed gauge block to achieve precise displacement adjustment of the gauge block so that the gauge block is within the measuring range of the inductive displacement sensor. When measuring the five measured points of the measured block, it is necessary to manually move the gauge block with a handheld measuring frame, and at the same time use a manual shift fork to shift the inductive displacement sensor to achieve its contraction. Professional training is required before personnel can evenly shift the fork to maintain data accuracy. The movement of the displacement sensor, micro-positioning of the gauge block, and positioning of the gauge block measuring point are all manually operated, which affects the improvement of measurement automation capabilities and efficiency. Summary of the Invention

[0006] The purpose of the present invention is to provide a device suitable for efficient measurement of low-grade gauge blocks, which realizes the automatic movement of the precision displacement measuring component to the measured position according to the specifications of the measured block through the closed-loop motion control of the measuring back frame component; realizes the automatic positioning of the standard gauge block and the measured block through the gauge block automatic positioning component; realizes the automatic contact measurement of the gauge block that reaches the measurement position through the precision displacement measuring component; realizes the collection and display of gauge block data and the collection of environmental and material temperature information through the control and environment acquisition component; thereby realizes the automation of the gauge block measurement process and the automation of data acquisition and processing, improves the efficiency of calibration, and solves the problems of low measurement efficiency and high personnel requirements caused by manual fork shifting and manual movement of gauge blocks.

[0007] The purpose of the present invention is achieved through the following technical solutions:

[0008] The present invention provides a device for high-efficiency measurement of low-grade gauge blocks, comprising: a measuring back frame assembly, a precision displacement measuring assembly, a gauge block automatic positioning assembly, a base assembly, and a control and environment acquisition assembly;

[0009] The measuring back frame assembly is used to install the precision displacement measuring assembly, so that the precision displacement measuring assembly can automatically move to the position to be measured according to the specifications of the measured block set by the control and environment acquisition assembly, ensuring that the position to be measured is within the effective measurement range of the precision displacement measuring assembly, and providing stable support for the precision displacement measuring assembly during comparative measurement; the precision displacement measuring assembly adopts the inductive measurement principle, and replaces the manual fork by pneumatically driving the standard probe on the precision displacement measuring assembly to move back and forth, thereby realizing high-precision automatic acquisition of gauge block length data; the gauge block automatic positioning assembly is used to simultaneously install the standard gauge block and the measured block, automatically realize the positioning of the standard gauge block and the measured block under the control of the control and environment acquisition assembly, and cooperate with the precision displacement measuring assembly to realize automatic measurement; the base assembly is used to install the measuring back frame assembly and the gauge block main workbench, ensuring the stability of the entire measurement process; the control and environment acquisition assembly is used to realize automatic data acquisition of the precision displacement measuring assembly, environmental information, and gauge block temperature, and realize closed-loop motion control of the measuring back frame assembly;

[0010] The measuring back frame assembly includes: a back frame, a grating scale, a grating scale reading head, a grating scale reading head mounting seat, a drive motor, a motor mounting plate, a mounting plate adjustment seat, a bearing, a bearing mounting seat, a drive pulley, a manual belt integrated pulley, a synchronous belt, a screw mounting seat, a sensor mounting platform cover, a sensor mounting platform, a displacement measurement component locking pin, a screw nut, a screw nut mounting seat, a guide rail slider, a screw, a guide rail, and a screw locking brake;

[0011] The back frame is the basis for the guidance and movement of the precision displacement measurement assembly. The high-precision guidance of the precision displacement measurement assembly is achieved by installing the guide rail in cooperation with the guide rail slider installed on the sensor mounting platform. The drive of the sensor mounting platform is achieved by the cooperation of the lead screw installed on the lead screw mounting seat and the lead screw nut, thereby achieving stable movement drive of the precision displacement measurement assembly.

[0012] The grating ruler is mounted on the side of the back frame and is used to cooperate with the grating ruler reading head mounted on the sensor mounting platform through the grating ruler reading head mounting seat to achieve height measurement of the precision displacement measurement component, which serves as the basis for feedback of the movement of the control and environment acquisition component;

[0013] The driving motor is mounted on the bearing mounting seat through the bearing, the bearing mounting seat is mounted on the motor mounting plate, the driving pulley is mounted on the inner ring of the bearing, and is fixedly connected to the rotating shaft of the driving motor through the inner hole of the driving pulley;

[0014] The manual belt integrated pulley is installed on the screw rod, and the screw rod is installed on the screw rod mounting seat. The synchronous belt connects the driving pulley and the manual belt integrated pulley, and the tightness of the synchronous belt is adjusted by the mounting plate adjustment seat. The driving torque of the driving motor is transmitted to the manual belt integrated pulley through the synchronous belt, thereby driving the screw rod to rotate and driving the sensor mounting platform on which the screw rod nut and the screw rod nut mounting seat are installed to move up and down;

[0015] The sensor mounting platform cover is used to protect the precision displacement measurement component; the precision displacement measurement component is installed on the sensor mounting platform through the displacement measurement component locking pins;

[0016] The sensor mounting platform is equipped with the inductance processing circuit of the precision displacement measurement component, the grating scale reading head, the grating scale reading head mounting seat, the guide rail slider, the lead screw nut, and the lead screw nut mounting seat of the precision displacement measurement component. It is a key component for realizing automatic high and low movement of the precision displacement measurement component and ensuring stable comparative measurement;

[0017] The screw locking brake is installed at the lower end of the screw, the static part of the screw locking brake is fixedly connected to the back frame, and the movable part of the screw locking brake is connected to the screw to control the locking and loosening of the screw, thereby increasing the stability of the sensor mounting platform in a static state and locking the screw in an emergency to prevent the precision displacement measurement assembly from colliding with the gauge block or the gauge block main workbench;

[0018] The precision displacement measurement assembly includes: an inductance processing circuit, a shielding cover, an electromagnetic push rod, a push rod mounting seat, a piston, a return spring, a one-way air pipe joint, a cylinder seat, an air pipe joint mounting seat, an air pipe joint, and an inductive displacement sensor structure;

[0019] The inductance processing circuit is used to convert the displacement of the inductive displacement sensor structure into an inductance change, which is then converted into a digital value, and the displacement is obtained after processing by the control and environment acquisition component. The inductive displacement sensor structure has an air cavity, and the reciprocating motion of the standard probe is achieved through pneumatic drive. The electromagnetic push rod drives the piston to reciprocate in the cylinder seat, thereby triggering and coordinating the reciprocating motion of the standard probe required for automatic data collection of the standard gauge block and the measured block.

[0020] The shielding cover is mounted on the push rod mounting base and is used to shield electromagnetic effects together with the push rod mounting base to prevent the inductance in the inductive displacement sensor structure from being affected;

[0021] The electromagnetic push rod is mounted on the cylinder seat via the push rod mounting seat, the ball head on the top of the electromagnetic push rod is connected to the piston, and the reciprocating motion of the piston is achieved by the reciprocating motion of the electromagnetic push rod;

[0022] The piston is installed in the cylinder seat and cooperates with the cylinder of the cylinder seat to produce a change in the volume of the air cavity and generate gas pressure;

[0023] The return spring is installed on the right side of the piston in the cylinder seat to promote the rapid return of the piston;

[0024] The one-way air pipe joint and the one-way air pipe joint are both mounted on the air pipe joint mounting base. The one-way air pipe joint is used to be in a ventilating state when the piston moves to the left to expand the air cavity, absorbing air into the air cavity, and is in a closed state when the piston moves to the right to shrink the air cavity. The gas enters the inductive displacement sensor structure through the one-way air pipe joint to realize the reciprocating movement of the standard probe;

[0025] The gauge block automatic positioning assembly includes: a measured block, a standard gauge block, a replaceable gauge block rack, a limit pin, a transverse guide drive left mounting rack, a transverse drive mounting seat, a transverse drive mover, a transverse drive magnetic rod, a transverse guide drive right mounting rack, a longitudinal drive magnetic rod, a longitudinal drive mover, a longitudinal drive mounting seat, a gauge block rack quick-mount female seat, a gauge block rack positioning pin, a gauge block rack quick-mount male seat, and a gauge block rack quick-mount handheld seat;

[0026] The measured block and the standard block are installed in the groove of the replaceable block rack. The replaceable block rack realizes two-dimensional movement under the drive of the longitudinal drive mounting seat. The replaceable block rack is mechanically limited by the limit pin of the block rack. The replaceable block rack is installed on the quick-install male seat of the block rack through the positioning pin of the block rack. The transverse drive magnetic rod is installed in the transverse guide drive left mounting frame and the transverse guide drive right mounting frame to ensure structural stability and parallel guidance. The transverse drive mover and transverse drive magnetic rod are installed on the transverse drive mounting seat to realize transverse drive and guidance of the transverse drive mounting seat, thereby driving the transverse movement of the longitudinal drive mounting seat. The longitudinal drive The magnetic rod and the longitudinal drive magnetic rod are installed on the transverse drive mounting seat to realize the driving and guiding of the longitudinal drive mounting seat, thereby driving the transverse movement of the longitudinal drive mounting seat, and the longitudinal drive mover is installed on the longitudinal drive mounting seat to realize longitudinal driving and guiding, the gauge block rack quick-install female seat is installed in the longitudinal drive mounting seat, and cooperates with the gauge block rack quick-install male seat to realize the rapid locking and disassembly of the replaceable gauge block rack, the slotted flange structure in the gauge block rack quick-install female seat cooperates with the ear structure of the gauge block quick-install male seat to realize rotation locking, after rotation and resetting, the gauge block rack quick-install hand-held seat can be removed, and then the replaceable gauge block rack can be removed and replaced to realize the replacement of the replaceable gauge block racks of different specifications;

[0027] The base assembly includes: a gauge block auxiliary workbench, a gauge block main workbench, a grinding ring, a lateral adjustment knob, and a base;

[0028] The cam is provided with a plurality of protruding and evenly distributed ribs on the auxiliary workbench to facilitate the temporary placement of the gauge block and the constant temperature heat dissipation of the gauge block. The auxiliary workbench is provided with a circular hole for installing the main workbench of the gauge block. The main workbench of the gauge block is installed in the auxiliary workbench of the gauge block. The main workbench of the gauge block also adopts a ribbed scheme. The rib surface of the main workbench of the gauge block is convenient for placing the gauge block after being ground. The grinding ring is installed between the main workbench of the gauge block and the auxiliary workbench of the gauge block. The grinding ring is adapted to achieve the precise adjustment of the height direction of the main workbench of the gauge block and the auxiliary workbench of the gauge block, so that the main workbench of the gauge block is higher than the auxiliary workbench of the gauge block. The lateral adjustment torque is axially mounted on the protruding cylindrical surface of the auxiliary workbench of the gauge block, and the rib normal direction of the auxiliary workbench of the gauge block is adjusted by pressing the protruding cylindrical surface on the base from the side, so that the middle rib on the main workbench of the gauge block is located on the center of the standard probe of the precision displacement measuring assembly.

[0029] The control and environment acquisition components include: a display touch panel, a panel mounting plate, a power supply, an environment acquisition circuit, an integrated motion control board, a box, a plug mounting plate, a contact head, a clamping male frame, a clamping spring, a clamping female frame, and a temperature sensor;

[0030] The display touch panel is used to display the displacement measurement data and environmental parameter data of the gauge block of the precision displacement measurement component, set the motion parameters, and realize the automatic movement of the sensor mounting platform according to the gauge block specifications through touch. The panel mounting plate is used to install the display touch panel and the power switch. The power supply is used to realize the conversion of the mains power to the required voltage. The environmental acquisition circuit is used to realize the automatic collection of the temperature, humidity, and air pressure data of the environment, and then realize the reference of the environmental information of the certificate. The integrated motion control board is used to realize the motion control of the sensor mounting platform and the input, processing and output of the displacement measurement data of the gauge block of the precision displacement measurement component. The box is used to install and protect the internal The power supply, the environmental collection circuit, and the integrated motion control board of the part; the plug mounting plate is used to install the environmental collection circuit and the data connection connector of the precision displacement measurement component, which is convenient for plugging and unplugging; the contact head is mounted on the clamping male frame and contacts the gauge block; the contact head is made of a material with a lower hardness than the gauge block to prevent scratches on the gauge block; the clamping male frame and the clamping female frame are connected by a pin to realize the opening and closing scissor movement; the clamping spring is installed at the rear of the clamping male frame and the clamping female frame to realize the clamping of the gauge block; the temperature sensor is mounted on the clamping female frame; the temperature sensor is made of brass material to realize the measurement of the temperature material of the gauge block by contacting the gauge block;

[0031] Preferably, the back frame in the measuring back frame assembly is formed by casting and aging a hollow ribbed structure, thereby increasing the stability of the structure and reducing the cost;

[0032] Preferably, the grating ruler in the measuring back frame assembly adopts an absolute grating ruler, so that the sensor mounting platform drives the precision displacement measuring assembly to move to the required precise position according to the specified gauge block specifications, avoiding the safety and space problems caused by the installation of mechanical limit and photoelectric zero position homing;

[0033] Preferably, the sensor mounting platform in the measurement back frame assembly adopts a hollow structure at the top and bottom and is made of steel or cast iron, leaving space for installing the inductance processing circuit and the precision displacement measurement component, and increasing structural stability;

[0034] Preferably, the automatic reciprocating motion of the inductive displacement sensor structure in the precision displacement measurement assembly is achieved by the built-in electromagnetic push rod pushing the piston on the cylinder seat;

[0035] Preferably, the replaceable gauge block rack in the gauge block automatic positioning assembly has two specifications, which respectively meet the installation requirements of gauge blocks with cross-sections of 30mm×9mm and 35mm×9mm;

[0036] Preferably, the number of ribs of the gauge block main workbench in the base assembly is 7 or 5, and the distance from the ribs on both sides of the middle rib is less than 30 mm;

[0037] The working method of a device suitable for efficient measurement of low-grade gauge blocks of the present invention is as follows:

[0038] Turn on the switch on the panel mounting plate of the control and environment acquisition component, power on the device, and perform self-testing. The integrated motion control board in the control and environment acquisition component starts the embedded instructions to control the transverse drive mover in the automatic positioning component of the gauge block to drive the transverse drive mounting seat to move transversely under the guidance of the transverse drive magnetic rod, thereby driving the transverse movement of the longitudinal drive mounting seat, and at the same time drive the longitudinal drive magnetic rod to realize the longitudinal movement of the longitudinal drive mounting seat under the guidance of the longitudinal drive magnetic rod, thereby realizing the two-dimensional movement of the replaceable gauge block frame under the drive of the longitudinal drive mounting seat, thereby driving the transverse movement of the longitudinal drive mounting seat to the position to be measured of the standard gauge block, and the control and environment acquisition component. The integrated motion control board in the assembly starts the embedded instructions to control the drive motor in the measuring back frame assembly, which rotates under the guidance of the bearing in the bearing mounting seat, thereby driving the drive pulley to rotate, and under the drive of the synchronous belt, drives the manual belt integrated pulley to rotate, thereby realizing the rotation of the screw rod, and under the cooperative drive of the screw rod and the screw rod mounting seat, the motion drive of the sensor mounting platform is realized under the cooperative guidance of the guide rail slider and the guide rail, thereby realizing the high and low movement of the precision displacement measurement component, and at the same time, the grating scale installed on the side of the back frame provides absolute height position measurement feedback for the sensor mounting platform. After the sensor mounting platform is turned on, it will determine the position of the sensor. Whether the sensor mounting platform is in the initial position; if the sensor mounting platform is not in the initial position, an instruction is given to drive the drive motor to drive the sensor mounting platform to drive the precision displacement measuring assembly to the initial position, that is, the standard probe of the precision displacement measuring assembly touches the gauge block main workbench of the base assembly and is within the effective measurement range of the inductive displacement sensor structure of the precision displacement measuring assembly. After judging that the sensor mounting platform has reached the initial position, the integrated motion control board in the control and environment acquisition assembly gives an instruction to the electromagnetic push rod of the precision displacement measuring assembly. The ball head on the top of the electromagnetic push rod is connected to the piston, and the reciprocating motion of the piston is realized by the reciprocating motion of the electromagnetic push rod. , the piston is installed in the cylinder seat, and cooperates with the cylinder of the cylinder seat to produce a volume change of the air cavity, thereby generating gas pressure. The reset spring is installed on the right side of the piston in the cylinder seat to promote the rapid reset of the piston. The one-way air pipe joint and the air pipe joint are both installed on the air pipe joint mounting seat. The one-way air pipe joint is used to be in a ventilated state when the piston moves to the left to expand the air cavity, absorbing air into it, and is in a closed state when the piston moves to the right to shrink. The gas enters the inductive displacement sensor structure through the air pipe joint, and the reciprocating movement of the standard probe is achieved by the change in gas pressure, thereby obtaining measurement data. After continuously measuring multiple measurement data and judging that the repeatability is qualified,The integrated motion control board in the control and environment acquisition component issues an instruction to control the drive motor to drive the sensor mounting platform to drive the precision displacement measurement component to the highest position, and the device initialization is completed;

[0039] After the device is initialized, the measured block and the standard block are placed in the replaceable block rack, the gauge block specifications are set through the display touch panel in the control and environment acquisition component, and the start button on the display touch panel is clicked to start the measurement. The integrated motion control board in the control and environment acquisition component gives instructions, and the drive motor drives the sensor mounting table and drives the inductive displacement sensor structure of the precision displacement measurement component to the measurement position. The closed-loop feedback of the grating ruler is used to achieve high-precision positioning of the inductive displacement sensor structure, and can directly reach the measurement position. The data of the standard gauge block is now collected. The integrated motion control board in the control and environment acquisition component starts the embedded instructions to control the transverse drive mover in the gauge block automatic positioning component. Under the guidance of the transverse drive magnetic rod, the transverse drive mounting seat is driven to move transversely, thereby driving the transverse movement of the longitudinal drive mounting seat. At the same time, the longitudinal drive magnetic rod is driven to realize the longitudinal movement of the longitudinal drive mounting seat under the guidance of the longitudinal drive magnetic rod, thereby realizing the two-dimensional movement of the replaceable gauge block frame under the drive of the longitudinal drive mounting seat, reaching the five measurement points of the measured block respectively, and realizing the detection of the measured block.

[0040] When the materials of the standard gauge block and the measured block are inconsistent, the temperature sensor installed on the clamping mother frame measures the temperature of the gauge block, and then inputs it into the control and environment acquisition component to achieve thermal expansion compensation for gauge blocks of different materials;

[0041] The environmental collection circuit is used to automatically collect the temperature, humidity and air pressure data of the environment, thereby citing the environmental information of the certificate to improve the digital level and efficiency when the certificate is issued. Beneficial effects

[0042] 1. The present invention provides a device suitable for efficient measurement of low-grade gauge blocks. The measuring back frame assembly is used to install a precision displacement measuring assembly, so that the inductive displacement sensor structure of the precision displacement measuring assembly can automatically move to the position to be measured according to the specifications of the measured block set by the control and environment acquisition assembly, ensuring that the position to be measured is within the effective measurement range of the precision displacement measuring assembly. At the same time, it provides stable support for the precision displacement measuring assembly during comparative measurement, shortens the manual locking method used in traditional comparative measurement, and adjusts the time for the gauge block to reach the measurement position through a fine-tuning mechanism, thereby improving detection efficiency and reducing the complexity of the mechanical structure.

[0043] 2. The present invention provides a device suitable for efficient measurement of low-grade gauge blocks. The electromagnetic push rod of the precision displacement measurement component can move according to the instructions given by the integrated motion control board in the control and environment acquisition component. The reciprocating motion of the piston is realized by the reciprocating motion of the electromagnetic push rod, and then the reciprocating movement of the standard probe of the inductive displacement sensor structure is realized, thereby obtaining the gauge block measurement data. At the same time, the reset movement of the standard probe is realized when the measuring position of the measured block and the standard gauge block moves, thereby preventing the gauge block from being scratched and realizing automatic collection of gauge block measurement data. The repeatability of the measuring gauge block can reach 10nm, avoiding the errors introduced by the manual fork in the traditional gauge block comparison measurement and the high labor requirements, thereby improving the measurement accuracy and efficiency.

[0044] 3. The present invention provides a device suitable for efficient measurement of low-level gauge blocks. The gauge block automatic positioning component can control the transverse driving mover in the gauge block automatic positioning component to drive the transverse driving mounting seat to move transversely under the guidance of the transverse driving magnetic rod according to the instructions embedded in the integrated motion control board in the control and environment acquisition component, thereby driving the transverse movement of the longitudinal driving mounting seat; at the same time, the longitudinal driving magnetic rod is driven to realize the longitudinal movement of the longitudinal driving mounting seat under the guidance of the longitudinal driving magnetic rod, thereby realizing the two-dimensional movement of the replaceable gauge block frame under the drive of the longitudinal driving mounting seat, reaching each measuring point of the standard gauge block and the measured block respectively, realizing the automatic movement of the gauge block, avoiding the manual movement of the gauge block during traditional gauge block comparative measurement, improving measurement efficiency, and reducing the requirements for personnel.

[0045] 4. The present invention is a device suitable for efficient measurement of low-grade gauge blocks. The control and environment acquisition components can realize integrated motion control and automatic collection of gauge block temperature and environmental information, thereby improving the digital level of measurement and the efficiency of certificate issuance. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a general structural diagram of a device suitable for efficient measurement of low-grade gauge blocks according to the present invention;

[0047] Among them, 1-measuring back frame assembly, 2-precision displacement measurement assembly, 3-gauge block automatic positioning assembly, 4-base assembly, 5-control and environment acquisition assembly;

[0048] Figure 2 This is a structural diagram of a measuring back frame assembly of a device suitable for efficient measurement of low-grade gauge blocks according to the present invention;

[0049] Among them, 101 - back frame, 102 - grating scale, 103 - grating scale reading head and mounting base, 104 - drive motor, 105 - motor mounting plate, 106 - mounting plate adjustment base, 107 - bearing, 108 - bearing mounting base, 109 - drive pulley, 110 - manual belt integrated pulley, 111 - synchronous belt, 112 - screw mounting base, 114 - sensor mounting platform, 115 - displacement measurement component locking pin, 116 - screw nut and mounting base, 117 - guide rail slider, 118 - screw, 119 - guide rail, 120 - screw locking brake;

[0050] Figure 3 This is a structural diagram of a precision displacement measurement assembly of a device suitable for efficient measurement of low-grade gauge blocks according to the present invention;

[0051] Among them, 201 - inductance processing circuit, 202 - shielding cover, 203 - electromagnetic push rod, 204 - push rod mounting base, 205 - piston, 206 - return spring, 207 - one-way air pipe joint, 208 - cylinder seat, 209 - air pipe joint mounting base, 210 - air pipe joint, 211 - standard probe, 212 - inductive displacement sensor structure;

[0052] Figure 4 This is a structural diagram of a gauge block automatic positioning assembly of a device suitable for efficient measurement of low-grade gauge blocks according to the present invention;

[0053] Among them, 301 - measured block and standard gauge block, 302 - replaceable gauge block rack, 303 - gauge block rack limit pin, 304 - transverse guide drive left mounting bracket, 305 - transverse drive mounting seat, 306 - transverse drive mover, 307 - transverse drive magnetic rod, 308 - transverse guide drive right mounting bracket, 309 - longitudinal drive magnetic rod, 310 - longitudinal drive mover, 311 - longitudinal drive mounting seat, 312 - gauge block rack quick-mount female seat, 313 - gauge block rack positioning pin, 314 - gauge block rack quick-mount male seat, 315 - gauge block rack quick-mount handheld seat;

[0054] Figure 5 This is a structural diagram of a base assembly of a device suitable for efficient measurement of low-grade gauge blocks according to the present invention;

[0055] Among them, 401-base, 402-lateral adjustment knob, 403-matching ring, 404-gauge block main workbench, 405-gauge block auxiliary workbench;

[0056] Figure 6 This is a structural diagram of the control and environment acquisition components of a device suitable for efficient measurement of low-level gauge blocks in the present invention.

[0057] Among them, 501 is the display touch panel, 502 is the panel mounting plate, 503 is the power supply, 504 is the environmental acquisition circuit, 505 is the integrated motion control board, 506 is the box, 507 is the plug mounting plate, 508 is the contact head, 509 is the clamping male frame, 510 is the clamping spring, 511 is the clamping female frame, and 512 is the temperature sensor. DETAILED DESCRIPTION

[0058] In order to better illustrate the purpose and advantages of the present invention, the invention is further described below with reference to the accompanying drawings and examples. Example

[0059] like Figure 1 As shown, a device suitable for efficient measurement of low-grade gauge blocks in the embodiment includes: a measuring back frame assembly 1, a precision displacement measuring assembly 2, a gauge block automatic positioning assembly 3, a base assembly 4, and a control and environment acquisition assembly 5;

[0060] The measuring back frame assembly 1 is used to install the precision displacement measuring assembly 2, so that the precision displacement measuring assembly 2 can automatically move to the position to be measured according to the specifications of the measured block set by the control and environment acquisition assembly 5, ensuring that the position to be measured is within the effective measurement range of the precision displacement measuring assembly 2, and at the same time providing stable support for the precision displacement measuring assembly during comparative measurement; the precision displacement measuring assembly 2 adopts the inductive measurement principle, and replaces the manual fork by pneumatically driving the standard probe to move back and forth, thereby realizing high-precision automatic collection of gauge block length data; the gauge block automatic positioning assembly 3 is used to simultaneously install the standard gauge block and the measured block, and automatically realize the positioning of the standard gauge block and the measured block under the control of the control and environment acquisition assembly 5, and cooperate with the precision displacement measuring assembly 2 to realize automatic measurement; the base assembly 4 is used to install the measuring back frame assembly 1 and the gauge block main workbench to ensure the stability of the entire measurement process; the control and environment acquisition assembly 5 is used to realize automatic data collection of the precision displacement measuring assembly 2, environmental information, and gauge block temperature, and at the same time realize closed-loop motion control of the measuring back frame assembly 1;

[0061] like Figure 2 As shown, the measuring back frame assembly 1 includes: a back frame 101, a grating ruler 102, a grating ruler reading head and a mounting seat 103, a drive motor 104, a motor mounting plate 105, a mounting plate adjustment seat 106, a bearing 107, a bearing mounting seat 108, a drive pulley 109, a manual belt integrated pulley 110, a synchronous belt 111, a screw mounting seat 112, a sensor mounting platform cover, a sensor mounting platform 114, a displacement measurement component locking pin 115, a screw nut and a mounting seat 116, a guide rail slider 117, a screw 118, a guide rail 119, and a screw locking brake 120;

[0062] The back frame 101 is the basis for the guidance and movement of the precision displacement measurement assembly 2. The high-precision guidance of the precision displacement measurement assembly 2 is achieved by installing a guide rail 119 and cooperating with a guide rail slider 117 installed on the sensor mounting platform 114. The sensor mounting platform 114 is driven by a screw 118 installed on the screw mounting base 112 and cooperating with a screw nut 116, thereby achieving stable movement and drive of the precision displacement measurement assembly 2.

[0063] In the embodiment, the back frame 101 in the measurement back frame assembly 1 is made of a hollow ribbed structure through casting and aging, which increases the stability of the structure while reducing the cost;

[0064] The grating scale 102 is mounted on the side of the back frame 101 and is used to cooperate with the grating scale reading head 103 mounted on the sensor mounting platform 114 through the grating scale reading head mounting seat to achieve height measurement of the precision displacement measurement component 2, which serves as the basis for feedback on the movement of the control and environment acquisition component 5;

[0065] In the embodiment, the grating ruler 102 in the measuring back frame assembly 1 is an absolute grating ruler, so that the sensor mounting platform 114 drives the precision displacement measuring assembly 2 to move to the required precise position according to the specified gauge block specifications, avoiding the safety and space problems caused by the installation of mechanical limit and photoelectric zero position homing;

[0066] The drive motor 104 is mounted on a bearing mounting seat 108 via a bearing 107, the bearing mounting seat 108 is mounted on the motor mounting plate 105, and the drive pulley 109 is mounted on the inner ring of the bearing 107 and fixedly connected to the rotating shaft of the drive motor 104 through the inner hole of the drive pulley 109;

[0067] The manual belt integrated pulley 110 is installed on the screw rod 118, and the screw rod 118 is installed on the screw rod mounting seat 112. The synchronous belt 111 connects the drive pulley 109 and the manual belt integrated pulley 110. The tightness of the synchronous belt 111 is adjusted by the mounting plate adjustment seat 106. The driving torque of the drive motor 104 is transmitted to the manual belt integrated pulley 110 through the synchronous belt 111, thereby driving the screw rod 118 to rotate, and driving the sensor mounting platform 114 equipped with the screw nut and the mounting seat 116 to move up and down;

[0068] The sensor mounting platform cover is used to protect the precision displacement measurement component 2; the precision displacement measurement component 2 is mounted on the sensor mounting platform 114 through the displacement measurement component locking pin 115;

[0069] The sensor mounting platform 114 is equipped with the inductance processing circuit 201 of the precision displacement measurement component 2, the inductance displacement sensor structure 212 of the precision displacement measurement component 2, the grating scale reading head 103, the grating scale reading head mounting base, the guide rail slider 117, the screw nut 116, and the screw nut mounting base. It is the key component for realizing the automatic high and low movement of the precision displacement measurement component 2 and ensuring stable comparative measurement.

[0070] In the embodiment, the sensor mounting platform 114 in the measurement back frame assembly 1 adopts a hollow structure at the top and bottom and is made of steel or cast iron, leaving space for installing the inductance processing circuit 201 and the precision displacement measurement assembly 2, and increasing the structural stability;

[0071] The screw locking brake 120 is installed at the lower end of the screw rod 118. The stationary part of the screw locking brake 120 is fixedly connected to the back frame 101, and the movable part of the screw locking brake 120 is connected to the screw rod 118. The locking and loosening of the screw rod 118 are controlled by power supply, which is used to increase the stability of the sensor mounting platform 114 in the static state, and lock the screw rod 118 in an emergency to prevent the precision displacement measurement component 2 from colliding with the gauge block or the gauge block main workbench.

[0072] like Figure 3 As shown, the precision displacement measurement assembly 2 includes: an inductance processing circuit 201, a shielding cover 202, an electromagnetic push rod 203, a push rod mounting seat 204, a piston 205, a return spring 206, a one-way air pipe joint 207, a cylinder seat 208, an air pipe joint mounting seat 209, an air pipe joint 210, and an inductive displacement sensor structure 211;

[0073] The inductance processing circuit 201 is used to convert the displacement of the inductance displacement sensor structure 211 into an inductance change and then convert it into a digital value, and obtain the displacement after processing by the control and environment acquisition component 5;

[0074] The inductive displacement sensor structure 211 has an air cavity inside, which is pneumatically driven to achieve the reciprocating motion of the standard probe. The electromagnetic push rod 203 pushes the piston 205 to reciprocate in the cylinder seat 208, thereby triggering and coordinating the reciprocating motion of the standard probe required for the automatic collection of data from the standard gauge block and the measured block.

[0075] In the embodiment, the automatic reciprocating motion of the inductive displacement sensor structure 211 in the precision displacement measurement assembly 2 is achieved by the built-in electromagnetic push rod 203 pushing the piston 205 on the cylinder seat 208;

[0076] The shielding cover 202 is mounted on the push rod mounting base 204 to shield the electromagnetic effect together with the push rod mounting base 204 to prevent the inductance in the inductive displacement sensor structure 211 from being affected;

[0077] The electromagnetic push rod 203 is mounted on the cylinder seat 208 via the push rod mounting seat 204. The ball head on the top of the electromagnetic push rod 203 is connected to the piston 205. The reciprocating motion of the piston 205 is achieved by the reciprocating motion of the electromagnetic push rod 203.

[0078] The piston 205 is mounted in the cylinder block 208 and cooperates with the cylinder of the cylinder block 208 to produce a change in the volume of the air chamber, thereby generating gas pressure;

[0079] The return spring 206 is installed on the right side of the piston 205 in the cylinder seat 208 to promote the rapid return of the piston 205;

[0080] The one-way air pipe joint 207 and the air pipe joint 210 are both mounted on the air pipe joint mounting base 209. The one-way air pipe joint 207 is used to be in a ventilating state when the piston 205 moves to the left to expand the air cavity, absorbing air into it. When the piston 205 moves to the right to shrink the air cavity, it is in a closed state. The air enters the inductive displacement sensor structure 211 through the air pipe joint 210 to realize the reciprocating movement of the standard probe.

[0081] like Figure 4 As shown, the gauge block automatic positioning assembly 3 includes: a measured block and a standard gauge block 301, a replaceable gauge block rack 302, a limit pin 303, a transverse guide drive left mounting rack 304, a transverse drive mounting seat 305, a transverse drive mover 306, a transverse drive magnetic rod 307, a transverse guide drive right mounting rack 308, a longitudinal drive magnetic rod 309, a longitudinal drive mover 310, a longitudinal drive mounting seat 311, a gauge block rack quick-mount female seat 312, a gauge block rack positioning pin 313, a gauge block rack quick-mount male seat 314, and a gauge block rack quick-mount handheld seat 315;

[0082] The measured block and the standard block 301 are installed in the slot of the replaceable block rack 302. The replaceable block rack 302 realizes two-dimensional movement under the drive of the longitudinal drive mounting seat 311. The replaceable block rack 302 is mechanically limited by the block rack limit pin 303. The replaceable block rack 302 is installed on the block rack quick-install male seat 314 through the block rack positioning pin 313. The transverse drive magnetic rod 307 is installed in the transverse guide drive left mounting frame 304 and the transverse guide drive right mounting frame 308 to ensure structural stability and parallel guidance. The transverse drive mover 306 and the transverse drive magnetic rod are installed on the transverse drive mounting seat 305 to realize transverse drive and guidance of the transverse drive mounting seat 305, thereby driving the transverse movement of the longitudinal drive mounting seat 311. The longitudinal drive magnetic rod 307 is installed in the transverse guide drive left mounting frame 304 and the transverse guide drive right mounting frame 308 to ensure structural stability and parallel guidance. 09 and the longitudinal drive magnetic rod are installed on the transverse drive mounting seat 305, which are used to realize the driving and guiding of the longitudinal drive mounting seat 311, thereby driving the transverse movement of the longitudinal drive mounting seat 311, and the longitudinal drive mover 310 is installed on the longitudinal drive mounting seat 311, which is used to realize the longitudinal driving and guiding, the gauge block rack quick-install female seat 312 is installed in the longitudinal drive mounting seat 311, and cooperates with the gauge block rack quick-install male seat 314 to realize the rapid locking and disassembly of the replaceable gauge block rack 302, the slotted flange structure in the gauge block rack quick-install female seat 312 cooperates with the ear structure of the gauge block quick-install male seat 314 to realize rotational locking, after rotational reset, the gauge block rack quick-install handheld seat 315 can be removed, and then the replaceable gauge block rack 302 can be removed and replaced to realize the replacement of replaceable gauge block racks 302 of different specifications;

[0083] In the embodiment, the replaceable gauge block rack 302 in the gauge block automatic positioning assembly 3 has two specifications, which respectively meet the installation requirements of gauge blocks with cross-sections of 30mm×9mm and 35mm×9mm;

[0084] like Figure 5 As shown, the base assembly 4 includes: a gauge block auxiliary workbench 401, a gauge block main workbench 402, a grinding ring 403, a lateral adjustment knob 404, and a base 405;

[0085] The gauge block auxiliary workbench 401 is installed on the protruding cylindrical surface of the base 405 for placing the measuring block to be measured. There are protruding and evenly distributed ribs on the gauge block auxiliary workbench 401 to facilitate the constant temperature heat dissipation of the temporary placement of the gauge block. There is a circular hole on the gauge block auxiliary workbench 401 for installing the gauge block main workbench 402. The gauge block main workbench 402 is installed in the gauge block auxiliary workbench 401. The gauge block main workbench 402 also adopts a ribbed solution. The rib surface of the gauge block main workbench 402 is polished to facilitate the placement of gauge blocks. A matching ring 403 is installed between the gauge block main table 402 and the gauge block auxiliary table 401. Through the matching ring 403, precise adjustment of the height direction of the gauge block main table 402 and the gauge block auxiliary table 401 is achieved, so that the gauge block main table 402 is higher than the gauge block auxiliary table 401. The lateral adjustment knob 404 is axially installed on the protruding cylindrical surface of the gauge block auxiliary table 401. Through the protruding cylindrical surface on the side top base 405, the normal direction of the rib of the gauge block auxiliary table 401 is adjusted, so that the middle rib on the gauge block main table 402 is located on the center of the standard probe of the precision displacement measurement assembly 2.

[0086] In the embodiment, the number of ribs of the gauge block main workbench 402 in the base assembly 4 is 7 or 5, and the distance value from the ribs on both sides of the middle rib is less than 30 mm;

[0087] like Figure 6 As shown, the control and environment acquisition component 5 includes: a display touch panel 501, a panel mounting plate 502, a power supply 503, an environment acquisition circuit 504, an integrated motion control board 505, a box 506, a plug mounting plate 507, a contact head 508, a clamping male frame 509, a clamping spring 510, a clamping female frame 511, and a temperature sensor 512;

[0088] The display touch panel 501 is used to display the displacement measurement data and environmental parameter data of the gauge block of the precision displacement measurement component 2, set the motion parameters, and realize the automatic movement of the sensor mounting platform 114 according to the specifications of the gauge block through touch. The panel mounting plate 502 is used to install the display touch panel 501 and the power supply 503 switch. The power supply 503 is used to realize the conversion of the mains power to the required voltage. The environmental acquisition circuit 504 is used to realize the automatic collection of the temperature, humidity, and air pressure data of the environment, and then realize the reference of the environmental information of the certificate. The integrated motion control board 505 is used to realize the motion control of the sensor mounting platform 114 and the input, processing and output of the displacement measurement data of the gauge block of the precision displacement measurement component 2. The box 506 is used to install and protect the internal electrical Source 503, environment acquisition circuit 504, integrated motion control board 505, plug mounting plate 507 is used to install the environment acquisition circuit 504, the data connection connector of the precision displacement measurement component 2, which is convenient for plugging and unplugging. The contact head 508 is installed on the clamping male frame 509 and contacts the gauge block. The contact head 508 is made of a material with a lower hardness than the gauge block to prevent scratching the gauge block. The clamping male frame 509 and the clamping female frame 511 are connected by pins to achieve opening and closing scissor motion. The rear of the clamping male frame 509 and the clamping female frame 511 are installed with a clamping spring 510 to achieve clamping of the gauge block. The temperature sensor 512 is installed on the clamping female frame 511. The temperature sensor 512 is made of brass material and measures the temperature of the gauge block by contacting the gauge block.

[0089] In the embodiment, a working method of a device suitable for efficient measurement of low-grade gauge blocks is as follows:

[0090] Turn on the power supply 503 switch on the panel mounting plate 502 of the control and environment acquisition component 5, power on the device, and perform self-test. The integrated motion control board 505 in the control and environment acquisition component 5 starts the embedded instruction to control the transverse drive mover 306 in the automatic positioning component 3 of the gauge block to drive the transverse drive mounting seat 305 to move transversely under the guidance of the transverse drive magnetic rod, thereby driving the transverse movement of the longitudinal drive mounting seat 311. At the same time, the longitudinal drive magnetic rod 309 is driven to realize the longitudinal movement of the longitudinal drive mounting seat 311 under the guidance of the longitudinal drive magnetic rod, thereby realizing the two-dimensional movement of the replaceable gauge block rack 302 under the drive of the longitudinal drive mounting seat 311, thereby driving the longitudinal drive mounting seat 311 to move transversely to the position to be measured of the standard gauge block, and controlling the gauge block. The integrated motion control board 505 in the control and environment acquisition component 5 starts the embedded instruction control measurement back frame component 1 to drive the drive motor 104, which rotates under the guidance of the bearing 107 in the bearing mounting seat 108, thereby driving the drive pulley 109 to rotate, and under the drive of the synchronous belt 111, drives the manual belt integrated pulley 110 to rotate, thereby realizing the rotation of the screw rod 118, and under the cooperative drive of the screw rod 118 and the screw rod mounting seat 112, the motion drive of the sensor mounting platform 114 is realized under the cooperative guidance of the guide rail slider 117 and the guide rail 119, thereby realizing the high and low movement of the precision displacement measurement component 2, and at the same time, the grating scale 102 installed on the side of the back frame 101 provides absolute height position measurement feedback for the sensor mounting platform 114. After starting up, the grating ruler 102 on the side will determine whether the sensor mounting platform 114 is in the initial position. If the sensor mounting platform 114 is not in the initial position, the integrated motion control board 505 gives an instruction to drive the motor 104 to drive the sensor mounting platform 114 to drive the precision displacement measurement component 2 to the initial position, that is, the standard probe of the precision displacement measurement component 2 touches the main workbench 402 of the gauge block of the base component 4 and is within the effective measurement range of the inductive displacement sensor structure 211 of the precision displacement measurement component 2. After determining that the sensor mounting platform 114 has reached the initial position, the integrated motion control board 505 in the control and environment acquisition component 5 gives an instruction to the electromagnetic push rod 203 of the precision displacement measurement component 2, and the top of the electromagnetic push rod 203 The ball head is connected to the piston 205, and the reciprocating motion of the piston 205 is realized by the reciprocating motion of the electromagnetic push rod 203. The piston 205 is installed in the cylinder seat 208 and cooperates with the cylinder of the cylinder seat 208 to produce a volume change of the air cavity and generate gas pressure. The reset spring 206 is installed on the right side of the piston 205 in the cylinder seat 208 to promote the rapid reset of the piston 205. The one-way air pipe joint 207 and the air pipe joint 210 are both installed on the air pipe joint mounting seat 209. The one-way air pipe joint 207 is used to be in a ventilation state when the piston 205 moves to the left to expand the air cavity, absorbing air into it, and is in a closed state when the piston 205 moves to the right to shrink it. The gas enters the inductive displacement sensor structure 211 through the air pipe joint 210.The standard probe is moved back and forth by the change in gas pressure, thereby acquiring measurement data. After continuously measuring multiple measurement data and judging that the repeatability is qualified, the integrated motion control board 505 in the control and environment acquisition component 5 issues a command to control the drive motor 104 to drive the sensor mounting platform 114 to drive the precision displacement measurement component 2 to the highest position, and the device initialization is completed;

[0091] After the device is initialized, the measured block and the standard block are placed in the replaceable block rack 302. The specification of the block to be measured is set through the display touch panel 501 in the control and environment acquisition component 5. The start button on the display touch panel 501 is clicked to start the measurement. The integrated motion control board 505 in the control and environment acquisition component 5 gives instructions, and the drive motor 104 drives the sensor mounting platform 114 and drives the inductive displacement sensor structure 211 of the precision displacement measurement component 2 to the measurement position. The closed-loop feedback of the grating ruler 102 is adopted. In the embodiment, the high-precision positioning of the inductive displacement sensor structure 211 can be controlled within 0.01 mm, which can It can directly reach the measuring position to realize the collection of standard gauge block data. The integrated motion control board 505 in the control and environment acquisition component 5 starts the embedded instruction to control the transverse drive mover 306 in the gauge block automatic positioning component 3. Under the guidance of the transverse drive magnetic rod, the transverse drive mounting seat 305 is driven to move transversely, thereby driving the transverse movement of the longitudinal drive mounting seat 311. At the same time, the longitudinal drive magnetic rod 309 is driven to realize the longitudinal movement of the longitudinal drive mounting seat 311 under the guidance of the longitudinal drive magnetic rod, thereby realizing the two-dimensional movement of the replaceable gauge block rack 302 under the drive of the longitudinal drive mounting seat 311, reaching the 5 measuring points of the measured block respectively, and realizing the detection of the measured block.

[0092] The above specific description further illustrates the purpose, technical solutions and beneficial effects of the invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device suitable for efficient measurement of low-grade gauge blocks, characterized by: include: Measuring back frame assembly (1), precision displacement measuring assembly (2), gauge block automatic positioning assembly (3), base assembly (4), control and environment acquisition assembly (5); The measuring back frame assembly (1) is used to install the precision displacement measuring assembly (2), so that the precision displacement measuring assembly (2) can automatically move to the position to be measured according to the specifications of the measured block set by the control and environment acquisition assembly (5), ensuring that the position to be measured is within the effective measurement range of the precision displacement measuring assembly (2), and providing stable support for the precision displacement measuring assembly (2) during comparative measurement; the precision displacement measuring assembly (2) adopts the inductive measurement principle, and achieves the purpose of replacing the manual fork by pneumatically driving the standard probe to move back and forth, thereby realizing high-precision automatic acquisition of the length data of the gauge block; The gauge block automatic positioning component (3) is used to simultaneously install the standard gauge block and the measured block, automatically realize the positioning of the standard gauge block and the measured block under the control of the control and environment acquisition component (5), and realize automatic measurement in conjunction with the precision displacement measurement component (2); the base component (4) is used to install the measurement back frame component (1) and the gauge block main workbench (402), ensuring the stability of the entire measurement process; the control and environment acquisition component (5) is used to realize automatic data acquisition of the precision displacement measurement component (2), environmental information, and gauge block temperature, and realize closed-loop motion control of the measurement back frame component (1); The measuring back frame assembly (1) includes: a back frame (101), a grating ruler (102), a grating ruler reading head and a mounting seat (103), a driving motor (104), a motor mounting plate (105), a mounting plate adjustment seat (106), a bearing (107), a bearing mounting seat (108), a driving pulley (109), a manual belt integrated pulley (110), a synchronous belt (111), a screw mounting seat (112), a sensor mounting platform cover, a sensor mounting platform (114), a displacement measuring assembly locking pin (115), a screw nut and a mounting seat (116), a guide rail slider (117), a screw (118), a guide rail (119), and a screw locking brake (120); The back frame (101) is the basis for the guidance and movement of the precision displacement measuring component (2), and realizes high-precision guidance of the precision displacement measuring component (2) through the guide rail slider (117), and realizes the driving of the sensor mounting platform (114) through the screw nut, thereby realizing stable movement of the precision displacement measuring component (2); The grating ruler (102) is mounted on the side of the back frame (101) and cooperates with the grating ruler reading head and the mounting seat (103) on the sensor mounting platform (114) to achieve the measurement of the height direction of the precision displacement measurement component (2) as a basis for feedback of the movement of the control and environment acquisition component (5); The driving motor (104) is fixedly mounted on the motor mounting plate (105), and the rotating shaft of the driving motor (104) is fixedly connected to the driving pulley (109), which drives the manual belt integrated pulley (110) to rotate through the synchronous belt (111), thereby driving the screw rod (118) to rotate, and driving the sensor mounting platform (114) to move up and down; The sensor mounting platform cover is used to protect the precision displacement measurement component (2); The precision displacement measuring assembly (2) is mounted on the sensor mounting platform (114) via the displacement measuring assembly locking pin (115); The sensor mounting platform (114) is equipped with a precision displacement measuring component (2), a grating scale reading head and a mounting seat (103), a guide rail slider (117), a lead screw nut and a mounting seat (116), and is a key component for realizing automatic high and low movement of the precision displacement measuring component (2) and ensuring stable comparative measurement; The screw locking brake (120) is installed at the lower end of the screw (118) to control the locking and loosening of the screw (118), thereby increasing the stability of the sensor mounting platform (114) in a static state and locking the screw (118) in an emergency to prevent the precision displacement measurement component (2) from colliding with the gauge block or the gauge block main workbench (402).

2. A device for efficient measurement of low-grade gauge blocks according to claim 1, characterized in that: The precision displacement measurement assembly (2) comprises: an inductance processing circuit (201), a shielding cover (202), an electromagnetic push rod (203), a push rod mounting seat (204), a piston (205), a return spring (206), a one-way air pipe joint (207), a cylinder seat (208), an air pipe joint mounting seat (209), an air pipe joint (210), and an inductance displacement sensor structural component (211); The inductance processing circuit (201) is used to convert the displacement of the inductance displacement sensor structure (211) into an inductance change and then convert it into a digital quantity, and obtain the displacement after processing by the control and environment acquisition component (5); An air cavity is provided in the inductive displacement sensor structure (211). The one-way air pipe joint (207) is used to be in a ventilated state when the piston (205) moves to the left to expand the air cavity, absorbing air into the cavity. When the piston (205) moves to the right to shrink the air cavity, the one-way air pipe joint (207) is in a closed state. Gas enters the air cavity through the air pipe joint (210). Driven by the gas pressure generated by the piston (205) and the cylinder seat (208), the electromagnetic push rod (203) pushes the piston (205) to reciprocate in the cylinder seat (208), thereby realizing the automatic reciprocating motion of the inductive displacement sensor structure (211) and realizing the triggering and coordination of the reciprocating motion of the standard probe required for the automatic acquisition of data of the standard gauge block and the measured block. The shielding cover (202) is mounted on the push rod mounting seat (204) and is used to shield electromagnetic effects together with the push rod mounting seat (204) to prevent the inductance in the inductive displacement sensor structure (211) from being affected; A return spring (206) is installed on the right side of the piston (205) in the cylinder seat (208) to promote the rapid return of the piston (205).

3. A device for efficient measurement of low-grade gauge blocks according to claim 2, characterized in that: The gauge block automatic positioning assembly (3) comprises: a measured block and a standard gauge block (301), a replaceable gauge block frame (302), a limit pin (303), a transverse guide drive left mounting frame (304), a transverse drive mounting seat (305), a transverse drive mover (306), a transverse drive magnetic rod (307), a transverse guide drive right mounting frame (308), a longitudinal drive magnetic rod (309), a longitudinal drive mover (310), a longitudinal drive mounting seat (311), a gauge block frame quick-mount female seat (312), a gauge block frame positioning pin (313), a gauge block frame quick-mount male seat (314), and a gauge block frame quick-mount handheld seat (315); The measured block and the standard gauge block (301) are installed in the groove of the replaceable gauge block rack (302). The replaceable gauge block rack (302) realizes two-dimensional movement under the drive of the longitudinal drive mounting seat (311). The replaceable gauge block rack (302) is mechanically limited by the gauge block rack limit pin (303). The replaceable gauge block rack (302) is installed on the gauge block rack quick-install male seat (314) through the gauge block rack positioning pin (313). The gauge block quick-install male seat (314) cooperates with the gauge block rack quick-install female seat (312) to realize rotation locking. After rotation reset, the gauge block rack quick-install handheld seat (315) can be removed, and then the replaceable gauge block rack (302) can be removed and replaced, thereby realizing rapid replacement of replaceable gauge block racks (302) of different specifications.

4. A device for efficient measurement of low-grade gauge blocks according to claim 3, characterized in that: The base assembly (4) includes: a gauge block auxiliary workbench (401), a gauge block main workbench (402), a grinding ring (403), a lateral adjustment knob (404), and a base (405); The gauge block auxiliary workbench (401) is mounted on a protruding cylindrical surface on the base (405) for placing the measuring block to be measured. The gauge block auxiliary workbench (401) has protruding uniformly distributed ribs to facilitate the temporary placement of the constant temperature heat dissipation of the gauge block. The gauge block auxiliary workbench (401) has a circular hole for installing the gauge block main workbench (402). The gauge block main workbench (402) is mounted in the gauge block auxiliary workbench (401). The gauge block main workbench (402) also adopts a ribbed solution. The rib surface of the gauge block main workbench (402) is convenient for placing the gauge block after grinding. The middle of the gauge block main workbench (402) and the gauge block auxiliary workbench (401) is provided with a ribbed surface. A grinding ring (403) is installed, and the grinding ring (403) is adapted to achieve precise adjustment of the height direction of the gauge block main worktable (402) and the gauge block auxiliary worktable (401), so that the gauge block main worktable (402) is higher than the gauge block auxiliary worktable (401). The lateral adjustment torque (404) is axially installed on the protruding cylindrical surface of the gauge block auxiliary worktable (401), and the rib normal direction of the gauge block auxiliary worktable (401) is adjusted through the protruding cylindrical surface on the side top base (405), so that the middle rib on the gauge block main worktable (402) is located on the center of the standard probe of the precision displacement measurement component (2).

5. The device for efficient measurement of low-grade gauge blocks according to claim 4, characterized in that: The control and environment acquisition component (5) includes: a display touch panel (501), a panel mounting plate (502), a power supply (503), an environment acquisition circuit (504), an integrated motion control board (505), a box (506), a plug mounting plate (507), a contact head (508), a clamping male frame (509), a clamping spring (510), a clamping female frame (511), and a temperature sensor (512); The display touch panel (501) is used to display the displacement measurement data and environmental parameter data of the gauge block of the precision displacement measurement component (2), set the motion parameters, and realize the automatic movement of the sensor mounting platform (114) according to the gauge block specifications through touch control. The panel mounting plate (502) is used to install the display touch panel (501) and the power supply (503) switch. The power supply (503) is used to realize the conversion of the mains power to the required voltage. The environmental acquisition circuit (504) is used to realize the automatic acquisition of the temperature, humidity and air pressure data of the environment, thereby realizing the reference of the environmental information of the certificate. The integrated motion control board (505) is used to realize the motion control of the sensor mounting platform (114) and the input, processing and output of the displacement measurement data of the gauge block of the precision displacement measurement component (2). The box (506) is used to install and protect the internal power supply (503) ), environment collection circuit (504), integrated motion control board (505), plug mounting plate (507) is used to install environment collection circuit (504), data connection connector of precision displacement measurement component (2), convenient plug and unplug use, contact head (508) is installed on clamping male frame (509) and contacts with gauge block, contact head (508) is made of material with lower hardness than gauge block, prevents gauge block from being scratched, clamping male frame (509) and clamping female frame (511) are connected by pins, realize opening and closing scissors movement, clamping male frame (509) and clamping female frame (511) are installed with clamping spring (510) at the rear of clamping male frame (509) and clamping female frame (511), realize clamping of gauge block, temperature sensor (512) is installed on clamping female frame (511), temperature sensor (512) is made of brass material and realizes temperature material measurement of gauge block by contacting with gauge block.

6. The device for efficient measurement of low-grade gauge blocks according to claim 5, characterized in that: The working method is as follows: Turn on the power (503) switch on the panel mounting plate (502) of the control and environment acquisition component (5), power on the device, and perform self-testing. The integrated motion control board (505) in the control and environment acquisition component (5) starts the embedded instruction control. The transverse drive mover (306) in the automatic positioning component (3) drives the transverse drive mounting seat (305) to move transversely under the guidance of the transverse drive magnetic rod (307), thereby driving the transverse movement of the longitudinal drive mounting seat (311). At the same time, the longitudinal drive magnetic rod (309) is driven to realize the longitudinal movement of the longitudinal drive mounting seat (311) under the guidance of the longitudinal drive magnetic rod (309), thereby realizing the driving of the replaceable gauge block frame (302) on the longitudinal drive mounting seat (311). The two-dimensional movement under the motion, thereby driving the longitudinal drive mounting seat (311) to move horizontally to the standard gauge block to be measured, the integrated motion control board (505) in the control and environment acquisition component (5) starts the embedded instruction control measurement back frame component (1) to drive the drive motor (104), which rotates under the guidance of the bearing (107) in the bearing mounting seat (108), thereby driving the drive pulley (109) to rotate, and under the drive of the synchronous belt (111), the manual belt integrated wheel (110) is driven to rotate, thereby realizing the rotation of the screw rod (118), and under the cooperative drive of the screw rod (118) and the screw rod mounting seat (112), the sensor mounting platform (1) is realized under the cooperative guidance of the guide rail slider (117) and the guide rail (119). 14) motion drive, thereby realizing the high and low movement of the precision displacement measurement component (2), and at the same time, the grating ruler (102) installed on the side of the back frame (101) provides absolute height position measurement feedback for the sensor mounting platform (114). After starting up, the grating ruler (102) on the side will determine whether the sensor mounting platform (114) is in the initial position. If the sensor mounting platform (114) is not in the initial position, the integrated motion control board (505) gives an instruction to drive the motor (104) to drive the sensor mounting platform (114) to drive the precision displacement measurement component (2) to move to the initial position, that is, the standard probe of the precision displacement measurement component (2) touches the main workbench (402) of the gauge block of the base component (4) and is in the precision position. Within the effective measurement range of the inductive displacement sensor structure (211) of the displacement measurement component (2), the integrated motion control board (505) in the control and environment acquisition component (5) gives a command to the electromagnetic push rod (203) of the precision displacement measurement component (2) after judging that the sensor mounting platform (114) reaches the initial position. The ball head at the top of the electromagnetic push rod (203) is connected to the piston (205). The reciprocating motion of the piston (205) is realized by the reciprocating motion of the electromagnetic push rod (203). The piston (205) is installed in the cylinder seat (208) and cooperates with the cylinder of the cylinder seat (208) to generate a volume change of the air cavity and generate gas pressure. The reset spring (206) is installed on the right side of the piston (205) in the cylinder seat (208).It is used to push the piston (205) to quickly reset. The one-way air pipe joint (207) and the air pipe joint (210) are both installed on the air pipe joint mounting seat (209). The one-way air pipe joint (207) is used to be in a ventilated state when the piston (205) moves to the left to expand the air cavity, absorbing air into it, and is in a closed state when the piston (205) moves to the right to shrink it. The gas enters the inductive displacement sensor structure (211) through the air pipe joint (210). The standard probe moves back and forth through the change of gas pressure, thereby obtaining measurement data. After continuously measuring multiple measurement data and judging that the repeatability is qualified, the integrated motion control board (505) in the control and environment acquisition component (5) issues a command to control the drive motor (104) to drive the sensor mounting platform (114) to drive the precision displacement measurement component (2) to move to the highest position, and the device initialization is completed; After the device is initialized, the measured block and the standard block (301) are placed in the replaceable block rack (302), and the specification of the measured block is set through the display touch panel (501) in the control and environment acquisition component (5). The start work button on the display touch panel (501) is clicked to start the measurement work. The integrated motion control board (505) in the control and environment acquisition component (5) gives instructions, and the drive motor (104) drives the sensor mounting table (114) and drives the inductive displacement sensor structure (211) of the precision displacement measurement component (2) to reach the measurement position. The closed-loop feedback of the grating ruler (102) and the high-precision positioning of the inductive displacement sensor structure (211) can directly reach the measurement position. To realize the collection of standard gauge block data, the integrated motion control board (505) of the control and environment acquisition component (5) starts the embedded instruction control gauge block automatic positioning component (3) in the transverse drive mover (306), and under the guidance of the transverse drive magnetic rod (307), drives the transverse drive mounting seat (305) to move transversely, thereby driving the transverse movement of the longitudinal drive mounting seat (311), and at the same time drives the longitudinal drive magnetic rod (309), and realizes the longitudinal movement of the longitudinal drive mounting seat (311) under the guidance of the longitudinal drive magnetic rod (309), thereby realizing the two-dimensional movement of the replaceable gauge block frame (302) under the drive of the longitudinal drive mounting seat (311), reaching the five measurement points of the measured block respectively, and realizing the detection of the measured block.

7. The device for efficient measurement of low-grade gauge blocks according to claim 6, characterized in that: The back frame (101) is made of a hollow ribbed structure through casting and aging, which increases the stability of the structure while reducing the cost; the grating scale (102) adopts an absolute grating scale to enable the sensor mounting platform (114) to drive the precision displacement measurement component (2) to move to the required precise position according to the specified gauge block specifications, avoiding the safety and space problems caused by the installation of mechanical limit and photoelectric zero position; the sensor mounting platform (114) adopts an upper and lower hollow structure and is made of steel or cast iron material, leaving space for installing the inductance processing circuit (201) and the precision displacement measurement component (2), and increasing the structural stability.

8. The device for efficient measurement of low-grade gauge blocks according to claim 7, characterized in that: The replaceable gauge block rack (302) has two specifications, which respectively meet the installation requirements of gauge blocks with cross sections of 30 mm×9 mm and 35 mm×9 mm.

9. The device for efficient measurement of low-grade gauge blocks according to claim 8, characterized in that: The number of ribs on the gauge block main workbench (402) is 7 or 5, and the distance between the ribs on both sides of the middle rib is less than 30 mm.

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