Automatic measuring system for assembled wire thread insert

Abstract

The invention discloses an automatic measuring system for an assembled wire thread insert. The automatic measuring system comprises a measuring sensor, a measuring head, a Y linear driving device, a moving seat, an X linear driving device and a mounting seat, the measuring sensor is installed at the measuring head, the measuring head is installed at the output end of the Y linear driving device, the Y linear driving device is used for driving the measuring head to move in the Y direction, the inner axis of a steel wire thread insert in a workpiece to be measured is in the Y direction, the Y linear driving device is installed on the moving seat, and the moving seat can move in the X direction relative to the installation seat. The X direction is perpendicular to the Y direction, the movable seat is connected to the output end of the X linear driving device, and the X linear driving device is installed on the installation seat; the measuring sensor on the measuring head is used for extending into a steel wire thread insert of a workpiece to be measured. The automatic measuring system for the assembled wire thread insert solves the problem that automatic measurement cannot be realized in the prior art.

Description

Technical Field

[0001] The invention relates to the field of automatic measurement, and in particular to an automatic measurement system for wire screw fittings after assembly. Background Art

[0002] like Figure 1 As shown, the workpiece to be inspected includes: a workpiece body and a wire screw sleeve. The workpiece body is provided with a mounting hole, in which a wire screw sleeve is installed. After the wire screw sleeve is assembled, the workpiece to be inspected needs to be inspected to determine whether the workpiece to be inspected has the wire screw sleeve. The workpiece body is protruded with a convex ring, which surrounds the mounting hole and the wire screw sleeve. The axis line surrounded by the outer wall of the convex ring is the outer axis line, and the axis line of the inner hole of the wire screw sleeve is the outer inner axis line, so a measurement system is required.

[0003] A Chinese patent discloses a screw sleeve cavity measuring tool suitable for a blade root preform of a wind turbine blade with application number CN202121300647.8, and the screw sleeve cavity measuring tool suitable for a blade root preform of a wind turbine blade comprises a connecting part, a measuring rod, a tightening part and a tape measure; the connecting part has a through hole and an accommodating cavity; the measuring rod is slidably inserted into the through hole of the connecting part; one end of the measuring rod is in contact with the bottom of the inner cavity of the screw sleeve; the tightening part is provided on the connecting part, and one end of the tightening part can be in contact with the outer peripheral wall of the measuring rod; the tape measure is rotatably connected to the accommodating cavity, and the zero scale end of the tape measure is connected to the plug-in end of the measuring rod; through the cooperation of the connecting part, the measuring rod tightening part and the tape measure.

[0004] Although the above-mentioned screw sleeve cavity measuring tool applicable to the blade root preform of the wind turbine blade can manually measure the length of the inner cavity of the screw sleeve, the screw sleeve cavity measuring tool applicable to the blade root preform of the wind turbine blade still has the disadvantage that it cannot realize automatic measurement, resulting in reduced measurement efficiency and cannot meet the rapid production requirements of modern industry. Summary of the invention

[0005] The present invention aims to provide an automatic measurement system for wire screw fittings after assembly, so as to solve the problem that automatic measurement cannot be realized in the prior art.

[0006] To achieve the above object, the present invention adopts the following technical solutions: The invention discloses an automatic measurement system for wire screw sleeves after assembly, comprising: a measuring sensor, a measuring head, a Y linear drive device, a moving seat, an X linear drive device and a mounting seat; the measuring sensor is mounted on the measuring head, the measuring head is mounted on the output end of the Y linear drive device, the Y linear drive device is used to drive the measuring head to move in the Y direction, the inner axis of the wire screw sleeve in the workpiece to be measured is in the Y direction, the Y linear drive device is mounted on the moving seat, the moving seat can move in the X direction relative to the mounting seat, the X direction is perpendicular to the Y direction, the moving seat is connected to the output end of the X linear drive device, and the X linear drive device is mounted on the mounting seat; the measuring sensor on the measuring head is used to extend into the wire screw sleeve of the workpiece to be measured.

[0007] Preferably, the measuring sensor is a displacement sensor, which is used to detect the distance between the inner hole of the wire screw sleeve and the axis center line of the measuring head.

[0008] Preferably, the measuring head includes: a measuring housing, a floating rod, a positioning sleeve and a mounting head. The measuring housing is connected to the output end of the Y linear drive device. The measuring housing is provided with a floating space. The floating space is for the top end of the floating rod to extend into. The floating space can allow the floating rod to move in the radial direction of the measuring housing. The bottom end of the floating rod is fixed to the positioning sleeve. The positioning sleeve is used to surround the outer wall of the convex ring of the workpiece to be measured. A mounting head is fixed in the positioning sleeve. A measuring sensor is installed on the mounting head. The mounting head and the measuring sensor are used to extend into the wire screw sleeve of the workpiece to be measured.

[0009] Preferably, the inner hole of the positioning sleeve includes: a positioning hole and a guide hole, the guide hole is a horn structure, the small end of the guide hole is connected to the positioning hole, the large end of the guide hole extends in the direction of the workpiece to be detected, and the inner wall of the positioning hole is used to fit tightly against the outer wall of the convex ring of the workpiece to be detected.

[0010] Preferably, there are at least three measuring sensors. Suppose there are N measuring sensors, the axis line of the circle surrounded by all the measuring sensors is on the axis line of the positioning sleeve, and all the measuring sensors are connected to the control box. The control box determines whether the wire screw sleeve has been assembled in the part to be measured based on the measurement results of all the measuring sensors.

[0011] Preferably, the control box also determines whether the inner axis of the wire screw sleeve in the workpiece to be measured is in a straight line with the outer axis of the outer wall of the convex ring in the workpiece to be detected based on the measurement results of all measurement sensors.

[0012] Preferably, the control box determines whether the wire thread insert has been assembled in the workpiece to be measured according to the measurement results of all the measurement sensors, including the following steps: S1. Assume that the measurement value measured by the i-th measurement sensor is ; S2. Calculate all The average ; S3. Judgment Is it less than D, where D is the first set value? If so, it is determined that the wire screw insert has been installed; if not, it is determined that the wire screw insert has not been installed.

[0013] Preferably, the control box determines whether the inner axis of the wire screw sleeve in the workpiece to be measured is in a straight line with the outer axis of the outer wall of the convex ring in the workpiece to be detected according to the measurement results of all the measurement sensors, including the following steps: S41, let i=0, m=0; S42, i=i+1 S43. Judgment Is it greater than , If the second setting value is set, go to step S45; if not, go to step S44; S44, determine whether i is greater than or equal to N, if yes, proceed to step S46; if no, proceed to step S42; S45, m=m+1; S46. Determine whether m is greater than or equal to M. If so, determine that the inner axis of the wire screw sleeve and the outer axis of the outer wall of the convex ring are not in a straight line; if not, determine that the inner axis of the wire screw sleeve and the outer axis of the outer wall of the convex ring are in a straight line.

[0014] Compared with the prior art, the present invention has the following beneficial effects: First, the mounting base is set as the installation base of all components; then, the X linear drive device is set to drive the measuring sensor, measuring head, Y linear drive device and moving base to move in the X direction, so that the measuring head with the measuring sensor is aligned with the wire screw sleeve of the workpiece to be detected; then, the Y linear drive device is activated to drive the measuring head and the measuring sensor to extend into the wire screw sleeve of the workpiece to be detected; finally, the measuring sensor performs detection, and judges whether the wire screw sleeve has been transferred according to the detection result. In this way, automatic detection is realized and the detection efficiency is improved.

[0015] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the workpiece to be inspected.

[0017] Figure 2 This is a schematic diagram of the structure of the automatic measurement system after wire screw assembly.

[0018] Figure 3 The front view of the automatic measurement system after the wire screw is assembled.

[0019] Figure 4 This is a cross-sectional view of the workpiece to be inspected and the measuring head.

[0020] Figure numerals: workpiece body 11, wire thread sleeve 12, convex ring 13, measuring sensor 2, measuring head 3, measuring housing 31, floating space 310, floating rod 32, positioning sleeve 33, positioning hole 331, guide hole 332, mounting head 34, Y linear drive device 4, moving seat 5, X linear drive device 6, mounting seat 7. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and functions of the present invention clearer and easier to understand, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments: Example 1

[0022] like Figure 2 as well as Figure 3 As shown, the present invention discloses an automatic measurement system for wire screw sleeve 12 after assembly, comprising: a measuring sensor 2, a measuring head 3, a Y linear drive device 4, a moving seat 5, an X linear drive device 6 and a mounting seat 7; the measuring sensor 2 is installed at the measuring head 3, the measuring head 3 is installed at the output end of the Y linear drive device 4, the Y linear drive device 4 is used to drive the measuring head 3 to move in the Y direction, the inner axis of the wire screw sleeve 12 in the workpiece to be measured is in the Y direction, the Y linear drive device 4 is installed on the moving seat 5, the moving seat 5 can be installed relative to the mounting seat 7 and move in the X direction, the X direction is perpendicular to the Y direction, the moving seat 5 is connected to the output end of the X linear drive device 6, and the X linear drive device 6 is installed on the mounting seat 7; the measuring sensor 2 on the measuring head 3 is used to extend into the wire screw sleeve 12 of the workpiece to be measured.

[0023] The measuring sensor 2 is a displacement sensor, which is used to detect the distance between the inner hole of the wire screw sleeve 12 and the axis center line of the measuring head 3. Example 2

[0024] This embodiment adds the following features based on the technical features in Embodiment 1: 1) Specific structure of the measuring head 3.

[0025] 2) The control box determines whether the wire thread sleeve 12 has been assembled in the workpiece to be measured according to the measurement results of all the measurement sensors 2.

[0026] 3) The control box determines whether the inner axis of the wire screw sleeve 12 in the workpiece to be measured is in a straight line with the outer axis of the outer wall of the convex ring 13 in the workpiece to be detected according to the measurement results of all the measurement sensors 2.

[0027] like Figure 4As shown, the measuring head 3 includes: a measuring housing 31, a floating rod 32, a positioning sleeve 33 and a mounting head 34. The measuring housing 31 is connected to the output end of the Y linear drive device 4. The measuring housing 31 is provided with a floating space 310. The floating space 310 is for the top end of the floating rod 32 to extend into. The floating space 310 can allow the floating rod 32 to move radially in the measuring housing 31. The bottom end of the floating rod 32 is fixed to the positioning sleeve 33. The positioning sleeve 33 is used to surround the outer wall of the convex ring 13 of the workpiece to be measured. A mounting head 34 is fixed in the positioning sleeve 33. The mounting head 34 is installed with a measuring sensor 2. The mounting head 34 and the measuring sensor 2 are used to extend into the wire screw sleeve 12 of the workpiece to be measured.

[0028] The inner hole of the positioning sleeve 33 includes: a positioning hole 331 and a guide hole 332. The guide hole 332 is a horn structure. The small end of the guide hole 332 is connected to the positioning hole 331. The large end of the guide hole 332 extends in the direction of the workpiece to be detected. The inner wall of the positioning hole 331 is used to be in close contact with the outer wall of the convex ring 13 of the workpiece to be detected. The large end of the guide hole 332 faces the workpiece to be detected, so that the inner hole of the positioning sleeve 33 is easier to be sleeved outside the outer wall of the convex ring 13 in the workpiece to be detected.

[0029] There are at least three measuring sensors 2. Assume that there are N measuring sensors 2. The axis line of the circle surrounded by all measuring sensors 2 is on the axis line of the positioning sleeve 33. All measuring sensors 2 are connected to the control box. The control box determines whether the wire screw sleeve 12 has been assembled in the measured part according to the measurement results of all measuring sensors 2.

[0030] The control box also determines whether the inner axis of the wire screw sleeve 12 in the workpiece to be measured is in a straight line with the outer axis of the outer wall of the convex ring 13 in the workpiece to be detected according to the measurement results of all the measurement sensors 2.

[0031] The control box determines whether the wire screw sleeve 12 has been assembled in the workpiece to be measured according to the measurement results of all the measurement sensors 2, including the following steps: S1. Assume that the measurement value measured by the i-th measurement sensor is ; S2. Calculate all The average ; S3. Judgment Is it less than D, where D is the first set value? If so, it is determined that the wire screw insert has been installed; if not, it is determined that the wire screw insert has not been installed.

[0032] The control box determines whether the inner axis of the wire screw sleeve in the workpiece to be measured is in a straight line with the outer axis of the outer wall of the convex ring in the workpiece to be detected according to the measurement results of all the measurement sensors, including the following steps: S41, let i=0, m=0; S42, i=i+1 S43. Judgment Is it greater than , If the second setting value is set, go to step S45; if not, go to step S44; S44, determine whether i is greater than or equal to N, if yes, proceed to step S46; if no, proceed to step S42; S45, m=m+1; S46. Determine whether m is greater than or equal to M. If so, determine that the inner axis of the wire screw sleeve and the outer axis of the outer wall of the convex ring are not in a straight line; if not, determine that the inner axis of the wire screw sleeve and the outer axis of the outer wall of the convex ring are in a straight line.

[0033] Although the X linear drive device 6 has the function of transporting the measuring head 3 and the measuring sensor 2 to a preliminary alignment with the workpiece to be detected, the axis of the measuring head 3 is offset from the axis of the wire screw sleeve 12 in the workpiece to be detected, that is: there is an offset distance between the axis of the measuring head 3 and the axis of the wire screw sleeve 12 in the workpiece to be detected. The offset distance is very small, but this offset distance may cause the detection value of the measuring sensor 2 to differ from the true value. Therefore, in this application, first, a measuring housing 31 connected to the output end of the Y linear drive device 4 is set, and the measuring housing 31 provides a floating space 310 to prepare for the floating rod 32 to float; then, the floating rod 32 is designed to cooperate with the measuring housing 31, so that the positioning sleeve 33 and the mounting head 34 can float; then, the positioning sleeve 33 is designed, and the inner hole of the positioning sleeve 33 is divided into a guide hole 332 and a positioning hole 331. The positioning hole 331 can guide the positioning sleeve 33 to float, and finally the inner wall of the positioning hole 331 of the positioning sleeve 33 is in close contact with the outer wall of the convex ring 13 of the workpiece to be detected. Thereby, the axis line of the positioning sleeve 33 is aligned with the outer axis line of the outer wall of the convex ring 13 in the workpiece to be inspected, which lays the foundation for the subsequent alignment of the outer axis line of the outer wall of the convex ring 13 with the inner axis line of the wire screw sleeve 12 (that is, concentric detection). At this time, the position of the measuring sensor 2 is also accurate, and it is inevitable that the offset distance between the measuring head 3 and the workpiece to be inspected will affect the concentric detection. Finally, multiple measuring sensors are arranged around the axis line of the positioning sleeve, and N measuring sensors are obtained, thereby realizing the judgment of whether the wire screw sleeve has been installed, and also realizing concentric detection with higher accuracy.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. Automatic measurement system after wire screw assembly, characterized by: include: Measuring sensor, measuring head, Y linear drive device, moving seat, X linear drive device and mounting seat; The measuring sensor is installed at the measuring head, and the measuring head is installed at the output end of the Y linear drive device. The Y linear drive device is used to drive the measuring head to move in the Y direction. The inner axis of the wire screw sleeve in the workpiece to be measured is in the Y direction. The Y linear drive device is installed on the moving seat. The moving seat can move in the X direction relative to the mounting seat. The X direction is perpendicular to the Y direction. The moving seat is connected to the output end of the X linear drive device, and the X linear drive device is installed on the mounting seat. The measuring sensor on the measuring head is used to extend into the wire thread insert of the workpiece to be measured.

2. The automatic measurement system for wire screw after assembly according to claim 1 is characterized in that: The measuring sensor is a displacement sensor, which is used to detect the distance between the inner hole of the wire screw sleeve and the axis center line of the measuring head.

3. The automatic measurement system for wire screw after assembly according to claim 2, characterized in that: The measuring head includes: a measuring housing, a floating rod, a positioning sleeve and a mounting head. The measuring housing is connected to the output end of the Y linear drive device. The measuring housing is provided with a floating space. The floating space is for the top end of the floating rod to extend into. The floating space can allow the floating rod to move in the radial direction of the measuring housing. The bottom end of the floating rod is fixed to the positioning sleeve. The positioning sleeve is used to surround the outer wall of the convex ring of the workpiece to be measured. The mounting head is fixed in the positioning sleeve. The mounting head is installed with a measuring sensor. The mounting head and the measuring sensor are used to extend into the wire screw sleeve of the workpiece to be measured.

4. The automatic measurement system for wire screw after assembly according to claim 3 is characterized in that: The inner hole of the positioning sleeve includes: a positioning hole and a guide hole. The guide hole is a horn structure. The small end of the guide hole is connected to the positioning hole, and the large end of the guide hole extends in the direction of the workpiece to be detected. The inner wall of the positioning hole is used to fit tightly against the outer wall of the convex ring of the workpiece to be detected.

5. The automatic measurement system for wire screw after assembly according to claim 4, characterized in that: There are at least three measuring sensors. Suppose there are N measuring sensors. The axis line of the circle surrounded by all measuring sensors is on the axis line of the positioning sleeve. All measuring sensors are connected to the control box. The control box determines whether the wire screw sleeve has been assembled in the measured part according to the measurement results of all measuring sensors.

6. The automatic measurement system for wire screw after assembly according to claim 5, characterized in that: The control box also determines whether the inner axis center line of the wire screw sleeve in the workpiece to be measured is in a straight line with the outer axis center line of the outer wall of the convex ring in the workpiece to be detected according to the measurement results of all the measurement sensors.

7. The automatic measurement system for wire screw after assembly according to claim 6, characterized in that: The control box determines whether the wire screw sleeve has been assembled in the workpiece to be measured according to the measurement results of all the measurement sensors, including the following steps: S1. Assume that the measurement value measured by the i-th measurement sensor is ; S2. Calculate all The average ; S3. Judgment Is it less than D, where D is the first set value? If so, it is determined that the wire screw insert has been installed; if not, it is determined that the wire screw insert has not been installed.

8. The automatic measurement system for wire screw after assembly according to claim 7, characterized in that: The control box determines whether the inner axis of the wire screw sleeve in the workpiece to be measured is in a straight line with the outer axis of the outer wall of the convex ring in the workpiece to be detected according to the measurement results of all the measurement sensors, including the following steps: S41, let i=0, m=0; S42, i=i+1 S43. Judgment Is it greater than , If the second setting value is set, go to step S45; if not, go to step S44; S44, determine whether i is greater than or equal to N, if yes, proceed to step S46; if no, proceed to step S42; S45, m=m+1; S46. Determine whether m is greater than or equal to M. If so, determine that the inner axis of the wire screw sleeve and the outer axis of the outer wall of the convex ring are not in a straight line; if not, determine that the inner axis of the wire screw sleeve and the outer axis of the outer wall of the convex ring are in a straight line.

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