A measuring device for machining

Abstract

This invention provides a measuring device for machining, relating to the field of machining measurement technology. It includes a measuring mounting component with floating supports mounted on it; a positioning device mounted on the measuring mounting component; the floating supports for verifying the original deformation of the workpiece; a floating safety element mounted on the measuring mounting component; the floating safety element for maintaining uniform support stress on the workpiece; and a delayed positioning device mounted on the measuring mounting component. The use of the floating safety element can detect the effectiveness of a row of floating supports, avoiding interference caused by the elastic floating supports being fully compressed or not compressed in certain areas. This solves the problem that current machining measuring devices are not convenient for automatically controlling uniform stress distribution and positioning of the supports.

Description

Technical Field

[0001] This invention relates to the field of machining measurement technology, and in particular to a measuring device for machining. Background Technology

[0002] In actual machining and manufacturing work, there are many long shaft-type workpieces, such as transmission spindles, which may have steps with similar shaft diameters that require accurate measurement. Current machining measuring devices are not conducive to improving the accuracy of measurement positions with optical assistance, and the detection accuracy at steps on shaft-type workpieces is not good. When clamping long shaft-type workpieces, it is not easy to adapt to changes in the shaft diameter. At the same time, if the two ends of a long shaft-type workpiece are clamped directly, it is easy to cause the middle to sink. However, when clamping the whole workpiece directly, the fixture will deform the workpiece, which cannot accurately reflect the dimensional accuracy of the shaft-type workpiece. It is not convenient to automatically control the uniform stress distribution and support positioning, which affects the measurement accuracy. At the same time, it is not convenient for workers to quickly check the overall straightness accuracy of the shaft-type workpiece, which further interferes with the measurement accuracy and reduces the measurement efficiency. Summary of the Invention

[0003] This disclosure relates to a measuring device for machining, which solves the problem that current measuring devices for machining are not convenient for automatically controlling uniform stress distribution and support positioning.

[0004] In a first aspect, this disclosure provides a measuring device for machining, specifically including a measuring mounting component, on which a floating support component is mounted; a positioning device is mounted on the measuring mounting component; the floating support component is used to verify the original deformation of the workpiece; a floating safety component is mounted on the measuring mounting component; the floating safety component is used to maintain uniform support stress on the workpiece; a delayed positioning component is mounted on the measuring mounting component; the delayed positioning component is electrically connected to the positioning device; the delayed positioning component is used to delay positioning the floating support component; the measuring mounting component includes: a mounting plate, a support frame, and a displacement rod, the support frame being fixedly mounted on the bottom of the mounting plate; a groove is provided on the mounting plate; a displacement rod is slidably mounted in the groove on the mounting plate; the displacement rod is provided with a groove.

[0005] In at least some embodiments, the measuring mounting component includes: a measuring slider, an electronic ruler, a camera, a measuring arm, a tension spring slider, and adjusting bolts. The measuring slider is slidably mounted on a displacement rod. An electronic ruler is fixedly mounted on the measuring slider, and the telescopic end of the electronic ruler is fixedly mounted inside the displacement rod. A camera is fixedly mounted on the side of the measuring slider. A display is externally connected to the electronic ruler. A display is externally connected to the camera. A measuring arm is fixedly mounted on the side of the measuring slider, and a probe is provided at the bottom of the measuring arm. The camera is aligned with the probe at the bottom of the measuring arm. A tension spring slider is slidably inserted into the bottom of the mounting plate. Two adjusting bolts are rotatably mounted on the mounting plate, and the two adjusting bolts are threadedly connected to the tension spring slider.

[0006] In at least some embodiments, the floating support includes: a floating frame, a pressure column, and a support spring. A row of floating frames is slidably inserted into the mounting plate, and a pressure column is fixedly installed on the side of each row of floating frames. The floating frames pass through the mounting plate. Support springs are fixedly installed on each row of floating frames, and the ends of each row of support springs are connected to the bottom of a spring slider. The bottom sides of the floating frames have protruding structures, and the bottom of the mounting plate stops the protrusions on both sides of the bottom of the floating frames. The spring slider is used to adjust the initial tension of the row of support springs.

[0007] In at least some embodiments, the floating support further includes: support blocks and pressure sensors; support blocks are slidably inserted into a row of floating frames, and the top of the support blocks has a V-shaped structure; pressure sensors are fixedly installed on a row of floating frames; the bottom of a row of support blocks is attached to the end of a row of pressure sensors; and a display is externally connected to a row of pressure sensors.

[0008] In at least some embodiments, the positioning device includes: a positioning plate and an electromagnet, the positioning plate having an L-shaped structure; the positioning plate being slidably inserted into a mounting plate; the end of the positioning plate being provided with a rubber coating; the positioning plate being used to press and adhere to a row of floating frames; a row of electromagnets being fixedly installed on the positioning plate; the row of electromagnets being used to magnetically attract the mounting plate; and the two ends of the positioning plate being connected to the sides of the mounting plate via V-shaped spring pieces.

[0009] In at least some embodiments, the floating safety element includes: a safety patch, with safety patches fixedly installed on the sides of a row of the floating frames respectively.

[0010] In at least some embodiments, the floating safety element further includes: a fixed contact plate, wherein a row of fixed contact plates is fixedly installed on the side of the mounting plate, and the row of fixed contact plates is an arc-shaped structure; the row of fixed contact plates is used to elastically fit the safety patch; and the row of safety patches, fixed contact plates and electronic ruler are connected in series with a power supply.

[0011] In at least some embodiments, the delayed positioning includes: a counteracting lead screw and a clamping slider, wherein the counteracting lead screw is rotatably mounted on the mounting plate; a handwheel is provided at the end of the counteracting lead screw; reverse threads are provided on both sides of the counteracting lead screw; two clamping sliders are threadedly connected to the counteracting lead screw, and the two clamping sliders are slidably mounted on the mounting plate respectively.

[0012] In at least some embodiments, the delayed positioning further includes: clamping plates and lower pressure plates, clamping plates are slidably mounted on the two clamping sliders respectively, and the two clamping plates are used to clamp and fit the two ends of the workpiece respectively; lower pressure plates are fixedly mounted on the two clamping sliders respectively, and the ends of the two lower pressure plates are inclined structures; the two lower pressure plates are used to squeeze the lower pressure column respectively; the top of the two clamping plates is provided with a raised upper edge respectively.

[0013] In at least some embodiments, the time-delay positioning further includes: a time-delay switch, with a time-delay switch fixedly mounted on each of the two clamping plates; the two time-delay switches are connected in series with a row of electromagnets to switch power supplies; and the two clamping plates are respectively provided with ball bearings, with the ball bearings on the two clamping plates located below the time-delay switches.

[0014] This invention provides a measuring device for machining, which has the following advantages:

[0015] This invention employs a row of floating support members to achieve elastic support for shaft-type workpieces, ensuring that the workpieces can be more fully released from stress and supported without causing deformation of the shaft-type workpieces. Combined with a positioning device, the floating support members can be stably positioned to ensure the stability of subsequent measurement work and avoid measurement data deviations caused by the shaking of shaft-type workpieces. At the same time, this structure utilizes a row of pressure sensors to improve detection efficiency, making it easier for staff to quickly inspect and sort out defective shaft-type workpieces with large straightness deviations, thereby improving detection efficiency.

[0016] Furthermore, the use of floating safety components can detect the effectiveness of a row of floating supports, avoiding interference caused by the elastic floating supports being fully compressed or not compressed in certain areas. This prevents the row of floating supports from elastically supporting shaft-type workpieces, ensuring that stress can be evenly distributed when supporting the corresponding shaft-type workpieces. This avoids omissions that are easily missed by manual observation, ensuring accurate structural detection. If the shaft-type workpiece is not fully elastically supported, the electronic ruler cannot be powered on and used normally, which can further limit the staff from adjusting the initial tension of the support springs.

[0017] In addition, delayed positioning can clamp shaft-like workpieces at both ends, improving the stability of shaft-like workpieces in subsequent measurements. At the same time, this structure can be used with a positioning device to ensure that the delayed automatic control positioning device can stably position the floating support after the workpiece is limited at both ends, further ensuring the stability of the shaft-like workpiece after the floating support is positioned. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0020] In the attached diagram:

[0021] Figure 1 A schematic diagram of the overall structure of a measuring device for machining according to this application is shown;

[0022] Figure 2 A schematic diagram of the rear structure of a machining measuring device according to this application is shown;

[0023] Figure 3 A cross-sectional view of the internal structure of a machining measuring device according to this application is shown;

[0024] Figure 4 A schematic diagram of the overall structure of the measuring mounting component of this application is shown;

[0025] Figure 5 This application shows Figure 1 Enlarged view of the structure of region B in the middle;

[0026] Figure 6 A schematic diagram of the overall structure of the floating support component of this application is shown;

[0027] Figure 7 This application shows Figure 3 Enlarged view of the structure of region C in the middle;

[0028] Figure 8 A schematic diagram of the overall structure of the positioning device of this application is shown;

[0029] Figure 9 This application shows Figure 2 Enlarged view of the structure of region D in the middle;

[0030] Figure 10 A schematic diagram of the overall structure of the time-delay positioning of this application is shown;

[0031] Figure 11 A schematic diagram of the bottom structure of a machining measuring device according to this application is shown.

[0032] List of reference numerals in the attached diagram:

[0033] 1. Measuring mounting components; 101. Mounting plate; 1011. Support frame; 102. Displacement rod; 1021. Measuring slider; 103. Electronic ruler; 104. Camera; 105. Measuring arm; 106. Tension spring slider; 107. Adjustment bolt; 2. Floating support components; 201. Floating frame; 202. Lower pressure column; 203. Support tension spring; 204. Support block; 205. Pressure sensor; 3. Positioning device; 301. Positioning plate; 302. Electromagnet; 4. Floating safety component; 401. Safety patch; 402. Fixed contact plate; 5. Delayed positioning; 501. Opposing lead screw; 502. Clamping slider; 503. Clamping piece; 504. Lower pressure plate; 505. Delay switch. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1: Please refer to Figures 1 to 11 :

[0036] This invention proposes a measuring device for machining, comprising a measuring mounting component 1, a floating support component 2 mounted on the measuring mounting component 1, a positioning device 3 mounted on the measuring mounting component 1, the floating support component 2 being used to verify the original deformation of the workpiece, a floating safety component 4 mounted on the measuring mounting component 1, the floating safety component 4 being used to maintain uniform support stress on the workpiece, and a delayed positioning component 5 mounted on the measuring mounting component 1, the delayed positioning component 5 being electrically connected to the positioning device 3, and the delayed positioning component 5 being used for delayed positioning of the floating support component 2; the measuring mounting component 1 includes: a mounting plate 101, a support frame 1011, and a displacement rod 102, the support frame 1011 being fixedly mounted on the bottom of the mounting plate 101; a groove is provided on the mounting plate 101; the displacement rod 102 is slidably mounted in the groove on the mounting plate 101; the displacement rod 102 is provided with a groove.

[0037] In this embodiment, the measuring mounting component 1 includes: a measuring slider 1021, an electronic ruler 103, a camera 104, a measuring arm 105, a tension spring slider 106, and an adjusting bolt 107. The measuring slider 1021 is slidably mounted on the displacement rod 102. An SDMSS type complete electronic ruler 103 can be used. The electronic ruler 103 is fixedly mounted on the measuring slider 1021, and the telescopic end of the electronic ruler 103 is fixedly mounted on the inner side of the displacement rod 102. The camera 104 is fixedly mounted on the side of the measuring slider 1021. The electronic ruler 103 is externally connected to a display. The camera 104 is externally connected to a display. The measuring arm 105 is fixedly mounted on the side of the measuring slider 1021, and a probe is provided at the bottom of the measuring arm 105. The camera 104 is aligned with the probe at the bottom of the measuring arm 105. The tension spring slider 106 is slidably inserted into the bottom of the mounting plate 101. Two adjusting bolts 107 are rotatably mounted, and the two adjusting bolts 107 are threaded onto the tension spring slider 106. The measuring mounting part 1, through the camera 104, can assist in observation on the side of the probe at the bottom of the measuring arm 105, ensuring the accuracy of the probe landing point at the bottom of the measuring arm 105, especially for the step of the workpiece, which makes it easier to observe and improves practicality. At the same time, the reading can be directly measured by the electronic ruler 103. The tension spring slider 106 can easily adjust the initial tension of a row of support tension springs 203, which can better adapt to the weight of shaft workpieces of different sizes, ensuring sufficient support. The structure is simple to adjust. The tension spring slider 106 can be adjusted by rotating the two adjusting bolts 107 with a wrench to pull the support tension springs 203. The greater the initial pulling length of the support tension springs 203, the greater the initial tension. The operation is simple.

[0038] In this embodiment, the floating support 2 includes: a floating frame 201, a pressing column 202, and a support spring 203. A row of floating frames 201 is slidably inserted into the mounting plate 101, and pressing columns 202 are fixedly installed on the sides of each row of floating frames 201. The floating frames 201 pass through the mounting plate 101. Support springs 203 are fixedly installed on each row of floating frames 201, and the ends of each row of support springs 203 are connected to the bottom of a spring slider 106. The bottom sides of the floating frames 201 have protruding structures, and the bottom of the mounting plate 101 stops the protrusions on both sides of the bottom of the floating frames 201. The spring slider 106 is used to adjust the initial tension of the row of support springs 203. The floating support 2 also includes: a support block 204 and a pressure sensor 205, which can be an SC-10N type complete set of pressure sensors 205. A row of floating frames 201 is slidably inserted with support blocks 204, and the top of the support blocks 204 is a V-shaped structure; a row of floating frames 201 is fixedly installed with pressure sensors 205; the bottom of the row of support blocks 204 is attached to the end of the row of pressure sensors 205; a display is connected to the row of pressure sensors 205; the positioning device 3 includes: a positioning plate 301 and an electromagnet 302, the positioning plate 301 is an L-shaped structure; the positioning plate 301 is slidably inserted into the mounting plate 101; the end of the positioning plate 301 is provided with a rubber coating; the positioning plate 301 is used to press and adhere to the row of floating frames 201; a row of electromagnets 302 is fixedly installed on the positioning plate 301; the row of electromagnets 302 is used to magnetically attract the mounting plate 101; the two ends of the positioning plate 301 are connected to the side of the mounting plate 101 through V-shaped spring pieces;Employing a row of floating support members 2 provides elastic support for shaft-like workpieces, ensuring more comprehensive stress relief and uniform stress support. This prevents deformation and avoids the problem of mid-section collapse caused by clamping at both ends or deformation inherent in traditional multi-point clamping methods. This ensures accurate and reliable measurement data. Furthermore, the elastic support structure's adaptation to the shaft-like workpiece's dimensions offers better compatibility and reduces costs. After positioning, it prevents workpiece swaying as with traditional multi-point fixed supports. Combined with the positioning device 3, it achieves stable positioning of the floating support members 2, ensuring stability in subsequent measurements and avoiding measurement data deviations caused by workpiece swaying. This structure... Using a row of pressure sensors 205 can improve detection efficiency, allowing staff to quickly inspect and sort out defective shaft workpieces with large straightness deviations. This improves detection efficiency and eliminates the need for tedious re-precision measurements. It utilizes the principle that when a workpiece with poor straightness is rotated, the bent portion is no longer supported by the support block 204 for rapid detection. The shaft workpiece is placed on the row of support blocks 204. Under the weight of the shaft workpiece, a row of floating frames 201 moves downward a certain amount for elastic support. Then, the electromagnet 302 magnetically attracts the mounting plate 101, causing the positioning plate 301 to press against the row of floating frames 201 for positioning. The shaft workpiece can then be manually rotated. When the straightness of the shaft workpiece meets the standard, it will still maintain coaxial straightness after rotation, meaning it remains in close contact with the downward-pressing support blocks 204.

[0039] In this embodiment, the floating safety element 4 includes: a safety patch 401, with safety patches 401 fixedly installed on the sides of a row of floating supports 201; the floating safety element 4 also includes: a fixed contact piece 402, with a row of fixed contact pieces 402 fixedly installed on the side of the mounting plate 101, and each row of fixed contact pieces 402 has an arc-shaped structure; the row of fixed contact pieces 402 is used to elastically fit the safety patch 401; the row of safety patches 401, the fixed contact pieces 402, and the electronic ruler 103 are connected in series with a power supply. The floating safety element 4 can detect the effectiveness of the row of floating supports 2, avoiding interference caused by the elastic floating supports 2 being fully compressed or not compressed locally, thus affecting the row of floating supports 2. The elastic support for shaft-type workpieces ensures that stress is evenly distributed when the corresponding shaft-type workpiece is supported, avoiding omissions that are easily missed by manual observation, thus ensuring accurate structural inspection. At the same time, if the shaft-type workpiece is not fully elastically supported, the electronic ruler 103 cannot be used normally for power connection. This further restricts the adjustment of the initial tension of the support spring 203 by the operator, adapting to workpieces of different weights. When the workpiece is heavy, the initial tension of the support spring 203 needs to be increased. When the shaft-type workpiece is placed on the support block 204, a row of floating frames 201 can move down, lengthening the support spring 203. At this time, a row of safety pads 401 are also driven down to attach and fix the electrical contact pads 402 for power connection. At this time, the electronic ruler 103 can be used normally for power connection.

[0040] Example 2, based on Example 1, the delayed positioning 5 includes: a counteracting lead screw 501 and a clamping slider 502, with the counteracting lead screw 501 rotatably mounted on the mounting plate 101; a handwheel is provided at the end of the counteracting lead screw 501; reverse threads are provided on both sides of the counteracting lead screw 501; two clamping sliders 502 are threadedly connected to the counteracting lead screw 501, and the two clamping sliders 502 are slidably mounted on the mounting plate 101 respectively; the delayed positioning 5 also includes: a clamping plate 503 and a lower pressure plate 504, the two... Clamping plates 503 are slidably mounted on the clamping sliders 502, and the two clamping plates 503 are used to clamp and fit the two ends of the workpiece respectively; lower pressure plates 504 are fixedly mounted on the two clamping sliders 502 respectively, and the ends of the two lower pressure plates 504 are inclined structures; the two lower pressure plates 504 are used to press the lower pressure column 202 respectively; the top of the two clamping plates 503 is provided with a raised upper edge; the delay positioning 5 also includes: a delay switch 505, and a delay switch is fixedly mounted on the two clamping plates 503 respectively. 505; NKPZ-22 type delay switch 505 can be used; two delay switches 505 are connected in series with a row of electromagnets 302 and switching power supply respectively; two clamping plates 503 are respectively equipped with ball bearings, and the ball bearings on the two clamping plates 503 are respectively located below the delay switches 505. The delay positioning 5 can realize the clamping of shaft workpieces at both ends of the workpiece, improving the stability of shaft workpieces in subsequent measurements. At the same time, this structure can be used with the positioning device 3 to ensure that after the two ends of the workpiece are limited, the delay automatic control positioning device 3 can realize the stable positioning of the floating support 2, further ensuring the stability of the shaft workpiece after the floating support 2 is positioned. The subsequent staff can carry out normal measurement work. The operation is simple and reliable. After the shaft workpiece is placed on the floating support 2, the opposing screw 501 can be rotated to drive the two clamping sliders 502 to move and position the shaft workpiece in opposite directions. The two delay switches 505 are pressed at the same time, and the delay control electromagnets 302 magnetically attract the mounting plate 101 to perform the positioning work.

[0041] The working principle of this embodiment is as follows: First, place the structure on the ground and place the shaft-like workpiece on a row of support blocks 204. At this time, under the action of the self-weight of the shaft-like workpiece, the row of floating frames 201 moves down a certain amount for elastic support. Rotating the opposing lead screw 501 drives the two clamping sliders 502 to move in opposite directions, causing the clamping plates 503 to adhere to both ends of the workpiece. The upper edge of the clamping plates 503 is used to limit and adhere to the outer sides of both ends of the shaft-like workpiece. At the same time, the ball bearings at the ends of the clamping plates 503 roll and adhere to both ends of the shaft-like workpiece. Simultaneously, as the two clamping plates 503 respectively adhere to both ends of the shaft-like workpiece, the two delay switches 505 are pressed at the same time, controlling the electromagnet 302 to magnetically attract the mounting plate 101, driving the positioning plate 301 to press and adhere to the row of floating frames 201 for positioning. The positioning work is then completed. At this time, the shaft-like workpiece can be manually rotated to check the straightness of the shaft-like workpiece. When the standard is met, the shaft-like workpiece can still maintain coaxial straightness after rotation, that is, it fits and presses down on a row of support blocks 204. Conversely, once the shaft-like workpiece is bent, even if it fits fully after being placed on a row of support blocks 204 initially, it will warp locally after being manually rotated. At this time, the floating frame 201 is positioned, and the pressure sensor 205 at the corresponding bend will no longer be pressed down, and the reading will be zero, which can directly prompt the staff. During measurement, the displacement rod 102 can be slid to adjust the detection position, and the measuring slider 1021 can be raised and lowered to place the probe at the bottom of the measuring arm 105 on the upper surface of the workpiece. At this time, the reading can be read through the display connected to the electronic ruler 103. In order to more clearly distinguish the step position, the landing point of the electronic ruler 103 can be accurately observed with the display connected to the camera 104.

[0042] When the shaft-like workpiece is placed on the support block 204, a row of floating frames 201 can move downwards, stretching the support spring 203. At this time, a row of safety pads 401 are also driven downwards to attach and fix the electrical contact pads 402 for power connection. The electronic ruler 103 can then be used normally with power. When the clamping slider 502 moves, it can drive the lower pressure plate 504 to use its front inclined surface to easily squeeze the lower pressure column 202. When the shaft-like workpiece is short, the floating frames 201 on both sides that do not support the shaft-like workpiece can be pressed down directly to maintain their safety pads 401. Moving the fixed contact piece 402 downwards will not affect normal power connection and will avoid interference. Conversely, if the floating frame 201 is not pressed down, the safety patch 401 will not move down to fit the fixed contact piece 402, and the electronic ruler 103 will not be able to connect to the power source normally. Alternatively, if the floating frame 201 is completely pressed down, causing the floating frame 201 to be stopped by the mounting plate 101 and unable to elastically support the workpiece, the safety patch 401 will move down excessively and separate from the fixed contact piece 402, and the electronic ruler 103 will also not be able to connect to the power source normally.

[0043] The following points should be noted in this article:

[0044] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0045] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0046] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A measuring device for machining, comprising a measuring mount (1) on which a floating support (2) is mounted; characterized in that: The positioning device (3) is installed on the measuring mounting (1); the floating support (2) is used for checking the original deformation of the workpiece; The floating safety device (4) is installed on the measuring mounting (1); the floating safety device (4) is used for keeping the support stress of the workpiece uniform; The delay positioning (5) is installed on the measuring mounting (1); the delay positioning (5) is electrically connected with the positioning device (3); the delay positioning (5) is used for delaying the positioning of the floating support (2); The measuring mounting (1) comprises an installation plate (101), a support frame (1011), a displacement rod (102), a measuring sliding block (1021), an electronic ruler (103), a camera (104), a measuring arm (105), a tension spring sliding block (106) and a distance adjusting bolt (107), the support frame (1011) is fixedly installed at the bottom of the installation plate (101); the installation plate (101) is provided with a sliding groove; the displacement rod (102) is slidably installed in the sliding groove on the installation plate (101); the displacement rod (102) is provided with a sliding groove; The floating support (2) comprises a floating frame (201), a pressing column (202) and a support tension spring (203); The floating support (2) further comprises a support block (204) and a pressure sensor (205), a row of support blocks (204) are respectively slidably inserted into the floating frames (201), and the top of the support block (204) is a V-shaped structure; a row of pressure sensors (205) are respectively fixedly installed on a row of floating frames (201); a row of support blocks (204) are respectively attached to the end portions of a row of pressure sensors (205); a row of pressure sensors (205) are externally connected with a display; The floating safety device (4) comprises an insurance patch (401), a row of insurance patches (401) are respectively fixedly installed on the side surfaces of a row of floating frames (201); the floating safety device (4) further comprises a fixed electric connection patch (402), a row of fixed electric connection patches (402) are fixedly installed on the side surfaces of the installation plate (101), and a row of fixed electric connection patches (402) are respectively arc-shaped structures; a row of fixed electric connection patches (402) are respectively used for elastically attaching the insurance patch (401); a row of insurance patches (401), fixed electric connection patches (402) and electronic rulers (103) are connected in series with a power supply.

2. The measuring device for machining according to claim 1, characterized in that The measuring slider (1021) is slidingly installed on the displacement rod (102); the electronic ruler (103) is fixedly installed on the measuring slider (1021), and the telescopic end of the electronic ruler (103) is fixedly installed on the inner side of the displacement rod (102); the camera (104) is fixedly installed on the side of the measuring slider (1021); the electronic ruler (103) is externally connected with a display; the camera (104) is externally connected with a display; the measuring arm (105) is fixedly installed on the side of the measuring slider (1021), and the probe is arranged at the bottom of the measuring arm (105); the camera (104) is aligned with the probe at the bottom of the measuring arm (105); the pull spring slider (106) is slidingly inserted into the bottom of the mounting plate (101); the two distance adjusting bolts (107) are rotatably installed on the mounting plate (101), and are respectively threadedly connected to the pull spring slider (106).

3. The measuring device for machining according to claim 1, characterized in that A row of floating frames (201) is slidingly inserted into the mounting plate (101), and the lower pressing columns (202) are respectively fixedly installed on the sides of the floating frames (201); the floating frames (201) pass through the mounting plate (101); the support springs (203) are respectively fixedly installed on the floating frames (201), and the ends of the support springs (203) are respectively connected to the bottom of the pull spring slider (106); the bottom of the floating frame (201) is provided with a protruding structure, and the bottom of the mounting plate (101) is provided with a stopper for the protruding structure of the bottom of the floating frame (201); the pull spring slider (106) is used for adjusting the initial tension of the support springs (203).

4. The measuring device for machining according to claim 1, characterized in that The positioning device (3) comprises a positioning plate (301) and an electromagnet (302), wherein the positioning plate (301) is in an L-shaped structure; the positioning plate (301) is slidingly inserted into the mounting plate (101); the end of the positioning plate (301) is provided with a rubber coating; the positioning plate (301) is used for extruding and adhering to the floating frames (201); a row of electromagnets (302) are fixedly installed on the positioning plate (301); the electromagnets (302) are respectively used for magnetically attracting the mounting plate (101); the two ends of the positioning plate (301) are connected to the side of the mounting plate (101) through V-shaped elastic sheets.

5. The measuring device for machining according to claim 4, characterized in that The delay positioning device (5) comprises a counter wire rod (501) and a clamping slider (502), wherein the counter wire rod (501) is rotatably installed on the mounting plate (101); the end of the counter wire rod (501) is provided with a hand wheel; the counter wire rod (501) is provided with reverse threads on the two sides; the two clamping sliders (502) are threadedly connected to the counter wire rod (501), and the clamping sliders (502) are slidingly installed on the mounting plate (101).

6. The measuring device for machining according to claim 5, characterized in that The time-delay positioning device (5) further comprises clamping pieces (503) and pressing plates (504), the clamping pieces (503) are respectively slidably installed on the two clamping sliders (502), and the two clamping pieces (503) are respectively used for clamping two ends of the workpiece; the pressing plates (504) are respectively fixedly installed on the two clamping sliders (502), and the end portions of the two pressing plates (504) are in inclined surface structures; the two pressing plates (504) are respectively used for pressing the pressing columns (202); and the top portions of the two clamping pieces (503) are respectively provided with protruding upper edges.

7. The measuring device for machining according to claim 6, characterized in that The time-delay positioning device (5) further comprises time-delay switches (505), the time-delay switches (505) are respectively fixedly installed on the two clamping pieces (503); the two time-delay switches (505) are respectively connected with a row of electromagnets (302) in series with a switch power supply; and the two clamping pieces (503) are respectively provided with rolling balls, and the rolling balls on the two clamping pieces (503) are respectively located below the time-delay switches (505).

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