Laser diameter measuring instrument

Abstract

The utility model discloses a laser diameter measuring instrument. A deflection instrument, a transmission assembly, a diameter measuring assembly and a measured workpiece are arranged on a console; the deflection instrument can enable the measured workpiece to rotate; the transmission assembly comprises a guide rail, a grating ruler, a belt module and a second motor, the second motor is connected with the belt module, and the guide rail and the grating ruler are both parallel to the length direction of the measured workpiece; the diameter measuring assembly is provided with a groove used for measuring the diameter of a measured workpiece, the diameter measuring assembly is arranged on the guide rail, the second motor and the belt module drive the diameter measuring assembly to move on the guide rail, the diameter measuring assembly comprises a laser, a receiver and a signal processor, and laser beams emitted by the laser irradiate the surface of the measured workpiece. The surface of the measured workpiece reflects a laser beam to the receiver, the receiver receives a signal and sends the signal to the signal processor for signal processing and analysis, the laser diameter measuring instrument provided by the utility model can measure the diameter, straightness, radius and other dimensions of a multi-section shaft workpiece, and the measuring precision and efficiency are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of measuring equipment, and in particular relates to a laser diameter measuring instrument. Background Art

[0002] The description in this section merely provides background information related to the disclosure of the present utility model and does not constitute prior art.

[0003] The traditional measurement method for measuring multi-section shaft parts is relatively complicated and the accuracy is difficult to guarantee. To measure all the internal or external dimensions of a conventional multi-section workpiece, it is necessary to use multiple inspection gauges or even customize special gauges to perform multiple measurements according to the measured dimensions.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the utility model and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology section of the utility model. Utility Model Content

[0005] In order to overcome the defects in the prior art, the utility model provides a laser diameter measuring instrument, which can measure the diameter, roundness, straightness, radius and other dimensions of multi-section shaft workpieces, thereby improving the measurement accuracy and efficiency.

[0006] The utility model discloses a laser diameter measuring instrument, comprising: a control console, on which a deflection instrument, a transmission component, a diameter measuring component and a workpiece to be measured are arranged;

[0007] The deflection meter includes a table mounted on the control table, and the deflection meter can rotate the workpiece to be measured;

[0008] The transmission assembly is installed on the table, and the transmission assembly includes a guide rail, a grating ruler, a belt module and a second motor, the second motor is connected to the belt module, and the guide rail and the grating ruler are parallel to the length direction of the workpiece to be measured;

[0009] The diameter measuring assembly is provided with a groove for measuring the diameter of the workpiece to be measured, and the length direction of the groove is parallel to the radial direction of the workpiece to be measured. The diameter measuring assembly is arranged on the guide rail, and the second motor and the belt module can drive the diameter measuring assembly to move on the guide rail. The diameter measuring assembly includes a laser, a receiver, and a signal processor. The laser beam emitted by the laser irradiates the surface of the workpiece to be measured, and the surface of the workpiece to be measured reflects the laser beam to the receiver. The receiver receives the signal and sends it to the signal processor for signal processing and analysis.

[0010] Furthermore, in the above-mentioned laser diameter measuring instrument, the deflection meter includes a handle, a group of tips, and a first motor, wherein the handle is connected to one of the tips and can control one of the tips to move closer to and away from the other tip, a group of the tips clamps the workpiece to be measured, and the first motor drives the tips to rotate, thereby driving the workpiece to be measured to rotate;

[0011] The deflection instrument further includes a group of support frames and a pressure wheel, the workpiece to be measured is placed on a group of the support frames, the pressure wheel is pressed on the workpiece to be measured, the first motor drives the pressure wheel to rotate, and then the pressure wheel drives the workpiece to be measured to rotate;

[0012] The top or the support frame can be detachably mounted on the table top.

[0013] Furthermore, in the above-mentioned laser diameter measuring instrument, a hand wheel portion is provided at one end of the other tip away from the handle portion.

[0014] Furthermore, in the above-mentioned laser diameter measuring instrument, the support frame is a V-shaped structure.

[0015] Furthermore, in the above-mentioned laser diameter measuring instrument, the grating ruler, the second motor and the belt module are all arranged on the side of the measured workpiece away from the guide rail.

[0016] Furthermore, in the above-mentioned laser diameter measuring instrument, the control console is also connected to a display component.

[0017] It can be seen from the above technical solution that the utility model has the following beneficial effects:

[0018] The laser diameter gauge described in the utility model can support the workpiece to be measured by clamping it with a top or a support frame, and has good measurement reliability and high measurement accuracy. The laser signal reflected from the surface of the object to be measured is used for measurement. When the laser beam irradiates the surface of the object to be measured, the phase difference between the reflected laser signal and the laser beam will change, which will in turn affect the amplitude and phase of the laser signal. By measuring the time delay and phase difference of the reflected signal, the diameter, roundness, straightness, radius and other dimensions of multi-section shaft workpieces can be measured, thereby improving the measurement accuracy and efficiency.

[0019] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the structure of the laser diameter measuring instrument and the workpiece in the embodiment of the utility model;

[0022] Figure 2 It is a partial schematic diagram of a laser diameter measuring instrument in an embodiment of the utility model;

[0023] Figure 3 It is a top view of the laser diameter measuring instrument in the embodiment of the utility model;

[0024] Figure 4 It is a schematic diagram of the diameter measuring component in the embodiment of the utility model.

[0025] The figure marks of the above drawings are: 1. control panel; 2. deflection meter; 21. table; 22. handle; 23. top; 24. first motor; 25. support frame; 26. pressure wheel; 27. handwheel; 3. transmission assembly; 31. guide rail; 32. grating scale; 33. belt module; 34. second motor; 4. diameter measuring assembly; 41. groove; 42. prism; 43. laser; 44. transmitting mirror; 45. receiver; 46. photoelectric tube; 47. signal processor; 5. workpiece to be measured; 6. display. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0028] The utility model is described in detail below with reference to the accompanying drawings and embodiments.

[0029] Reference Figures 1 to 4, this embodiment provides a laser diameter measuring instrument, comprising: a control console 1, on which a deflection meter 2, a transmission component 3, a diameter measuring component 4 and a workpiece 5 to be measured are arranged;

[0030] The deflection meter 2 includes a table 21 mounted on the control table 1, and the deflection meter 2 can rotate the workpiece 5 to be measured;

[0031] The transmission assembly 3 is installed on the table 21, and the transmission assembly 3 includes a guide rail 31, a grating ruler 32, a belt module 33 and a second motor 34, the second motor 34 is connected to the belt module 33, and the guide rail 31 and the grating ruler 32 are parallel to the length direction of the workpiece 5 to be measured;

[0032] The diameter measuring component 4 is provided with a groove 41 for measuring the diameter of the workpiece 5 to be measured, and the length direction of the groove 41 is parallel to the radial direction of the workpiece 5 to be measured. The diameter measuring component 4 is arranged on the guide rail 31, and the second motor 34 and the belt module 33 can drive the diameter measuring component 4 to move on the guide rail 31. The diameter measuring component 4 includes a laser 43, a receiver 45, and a signal processor 47. The laser beam emitted by the laser 43 is irradiated to the surface of the workpiece 5 to be measured, and the surface of the workpiece 5 to be measured reflects the laser beam to the receiver 45 through the transmitting mirror 44. The receiver 45 receives the signal and sends it to the signal processor 47 for signal processing and analysis. A laser beam is emitted by a semiconductor laser 43, and a prism 42 is driven by a motor to rotate at a high speed. The laser beam 43 is scanned through the prism 42 and converted into parallel light to pass through the test area. When there is a workpiece 5 to be measured in the test area, it will block part of the parallel light and convert it into a low level on the photoelectric tube 46 through the focusing prism 42, while the parallel light that is not blocked by the workpiece 5 to be measured is converted into a high level. By calculating the scanning time of the low level, the outer diameter value of the workpiece 5 to be measured in the scanning direction of the laser beam can be calculated.

[0033] Specifically, refer to Figure 2 In this embodiment, the deflection meter 2 includes a handle 22, a group of tops 23, and a first motor 24. The handle 22 is connected to one of the tops 23 and can control one of the tops 23 to move closer to and away from the other top 23. A group of the tops 23 clamps the workpiece 5 to be measured, and the first motor 24 drives the tops 23 to rotate, thereby driving the workpiece 5 to rotate;

[0034] The deflection instrument 2 further includes a set of support frames 25 and a pressure wheel 26. The workpiece 5 to be measured is placed on a set of the support frames 25. The pressure wheel 26 is pressed on the workpiece 5 to be measured. The first motor 24 drives the pressure wheel 26 to rotate, and then the pressure wheel 26 drives the workpiece 5 to be measured to rotate.

[0035] The top 23 or the support frame 25 can be detachably mounted on the table top 21 .

[0036] Specifically, in this embodiment, a hand wheel portion 27 is provided at one end of the other tip 23 away from the handle portion 22 .

[0037] Specifically, in this embodiment, the support frame 25 is a V-shaped structure.

[0038] The deflection meter 2 is mainly used to measure the radial runout error of shaft workpieces. The two tips 23 are used to position the shaft workpieces, and the workpiece to be measured is rotated. The probe directly measures the radial runout error of the workpiece in the radial direction of the workpiece to be measured. In a specific use environment, when the two ends of the workpiece 5 to be measured are provided with grooves, the deflection meter 2 uses a group of tips 23 to clamp at the two ends of the workpiece 5 to be measured, and the first motor 24 drives the tips 23 to rotate, so that the workpiece 5 to be measured is rotated for measurement; or the deflection meter 2 can also use the handwheel part 27 to manually rotate the tips 23 to drive the workpiece 5 to be measured to rotate; when there are no grooves at both ends of the workpiece 5 to be measured, the workpiece 5 to be measured is placed on the V-shaped support frame 25, and the deflection meter 2 uses the pressure wheel 26 to press against the outer wall of the workpiece 5 to be measured, and the first motor 24 drives the pressure wheel 26 to rotate, and the pressure wheel 26 presses on the workpiece 5 to be measured, so that the workpiece 5 to be measured is rotated for measurement. The deflection meter has a simple structure and is easy to operate. The handle part controls the tips to quickly load and unload the workpiece to be measured, and the measurement efficiency is high. There are multiple operating methods to rotate the workpiece 5 to be measured.

[0039] Specifically, in this embodiment, the grating ruler 32, the second motor 34 and the belt module 33 are all arranged on the side of the workpiece 5 to be measured away from the guide rail 31. The grating ruler is a measurement feedback device that works based on the optical principle of the grating. The grating ruler displacement sensor is often used in the closed-loop servo system of CNC machine tools and can be used for the detection of linear displacement. The measurement output signal is a digital pulse, which has the characteristics of large detection range, high detection accuracy and fast response speed.

[0040] Specifically, in this embodiment, the control console 1 is also connected to a display unit 6. The instrument interface of the diameter measuring assembly 4 is electrically connected to the control console 1 and the display unit 6. The signal processor processes and analyzes the signal and displays the final structure on the display unit 6. The display unit 6 can be a display screen or other display structures.

[0041] By means of the above structure, the control console is provided with a plurality of operation buttons, and the operator manually presses down the handle part 22 to open the top 23 connected to the deflection meter 2, places the workpiece 5 to be measured between the two tops 23, and releases the handle part 22 to clamp the workpiece 5 to be measured; then the operating system is turned on, the origin of the equipment is set, and the origin is automatically reset by the belt module 33 sensor. The operator sets the measuring position of the workpiece to be measured according to the data to be tested, and the measurement items support Excel report customization; then the start button is pressed to turn on the equipment with one button, the motor rotates the workpiece to be measured, and the speed can be adjusted. The second motor 34 and the belt module 33 can realize automatic movement of the diameter measuring component, and the grating ruler 32 reads the data of the diameter measuring position, automatically judges and analyzes the measurement data according to the workpiece position set by the operator, and displays the judgment result in real time, and measures the diameter, roundness and runout of the workpiece, and displays the measurement data and trend chart in real time; the workpiece to be measured can be clamped and supported by the top or the support frame, and the measurement reliability is good and the measurement accuracy is high; the laser diameter gauge has high measurement accuracy and its application field is relatively wide, and it is commonly used in metal, manufacturing, aerospace, automobile, chemical and other fields. The laser diameter gauge is a non-destructive testing device. Its working principle is to use the laser signal reflected from the surface of the object to be measured. When the laser beam is irradiated to the surface of the object to be measured, the phase difference between the reflected laser signal and the laser beam will change, which in turn will affect the amplitude and phase of the laser signal. By measuring the time delay and phase difference of the reflected signal, the diameter size of the object to be measured can be obtained. It has high measurement accuracy and a wide range of applications.

[0042] The utility model uses specific embodiments to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the technical solution and core idea of ​​the utility model. At the same time, for ordinary technicians in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A laser diameter measuring instrument, characterized in that: include: A control console, on which a deflection meter, a transmission assembly, a diameter measuring assembly and a workpiece to be measured are arranged; The deflection meter includes a table mounted on the control table, and the deflection meter can rotate the workpiece to be measured; The transmission assembly is installed on the table, and the transmission assembly includes a guide rail, a grating ruler, a belt module and a second motor, the second motor is connected to the belt module, and the guide rail and the grating ruler are parallel to the length direction of the workpiece to be measured; The diameter measuring assembly is provided with a groove for measuring the diameter of the workpiece to be measured, and the length direction of the groove is parallel to the radial direction of the workpiece to be measured. The diameter measuring assembly is arranged on the guide rail, and the second motor and the belt module can drive the diameter measuring assembly to move on the guide rail. The diameter measuring assembly includes a laser, a receiver, and a signal processor. The laser beam emitted by the laser irradiates the surface of the workpiece to be measured, and the surface of the workpiece to be measured reflects the laser beam to the receiver. The receiver receives the signal and sends it to the signal processor for signal processing and analysis.

2. The laser diameter measuring instrument according to claim 1, characterized in that: The deflection instrument comprises a handle, a group of tips, and a first motor. The handle is connected to one of the tips and can control one of the tips to move closer to and away from the other tip. The group of tips clamps the workpiece to be measured. The first motor drives the tips to rotate, and then drives the workpiece to rotate. The deflection instrument further includes a group of support frames and a pressure wheel, the workpiece to be measured is placed on a group of the support frames, the pressure wheel is pressed on the workpiece to be measured, the first motor drives the pressure wheel to rotate, and then the pressure wheel drives the workpiece to be measured to rotate; The top or the support frame can be detachably mounted on the table top.

3. The laser diameter measuring instrument according to claim 2, characterized in that: A hand wheel portion is provided at one end of the other tip away from the handle portion.

4. The laser diameter measuring instrument according to claim 2, characterized in that: The support frame is a V-shaped structure.

5. The laser diameter measuring instrument according to claim 1, characterized in that: The grating ruler, the second motor and the belt module are all arranged on a side of the workpiece to be measured away from the guide rail.

6. The laser diameter measuring instrument according to claim 1, characterized in that: The control console is also connected with a display component.

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