Part end face contour measuring device

Abstract

The utility model relates to the technical field of part measurement, and provides a part end face profile measuring device which comprises a measuring device body. The measuring device body comprises a machine base, a C-axis unit, a workbench, a two-axis moving unit and a measuring head unit. The machine base comprises a mounting platform; a C-axis unit and a two-axis moving unit are respectively arranged on the mounting platform; the C-axis unit comprises an air floating rotary table and an adjusting platform arranged on the air floating rotary table; a workbench is arranged on the adjusting platform; and a measuring head unit is arranged on the two-axis moving unit and is positioned above the working table. The device is simple in operation, and improves the efficiency and detection precision of the end face contour of the annular part.

Description

Technical Field

[0001] The utility model relates to the technical field of parts measurement, in particular to a device for measuring the end face profile of a part. Background Art

[0002] In order to detect the quality of parts, it is usually necessary to detect whether the size of the end face of the product exceeds the tolerance range specified in the product standard. The characteristics of the external characteristics of the parts in terms of amplitude, space and surface formation dominate its performance in many engineering aspects, such as wear, friction, lubrication, sealing, matching, reflection, coating, fatigue, etc. In addition, since the parts are formed along the processing process, they are very sensitive to changes in the process state. For example, process factors such as tool wear, changes in cutting amount, and surface treatment will cause changes in surface morphology. The surface morphology is three-dimensional, and the surface profile is part of the morphology. Therefore, from the perspective of engineering applications, measuring and analyzing the surface profile is not only the basis for studying the relationship between parts and performance, but also the basis for correctly identifying, monitoring and controlling its formation process.

[0003] The existing technology mostly uses the projection comparison method to measure the end face profile of parts. This method requires manual sampling, cutting, and polishing for multiple times, and then placing the part on the projector platform, aligning the part film with the projection, and finally manually judging whether it is out of tolerance. This method is cumbersome to operate and cannot be monitored in real time. In addition, different personnel have different operating techniques or alignment benchmarks, which can easily cause misjudgment and cannot provide high-accuracy measurement data.

[0004] Moreover, this method is difficult to apply in harsh industrial sites with many interferences, dusts, vibrations, etc. At the same time, this method is costly, the horizontal projector used is expensive, and the film consumables are easily scratched, and new films need to be replaced or made frequently, resulting in high measurement costs.

[0005] Therefore, it is urgent to develop a device for measuring the end face profile of a part. Utility Model Content

[0006] The utility model mainly solves the technical problems of the prior art of using the projection contrast method to measure the end face profile of a part, which is cumbersome to operate, different operating techniques or alignment bases of different personnel are easy to cause misjudgment, and cannot provide high-accuracy measurement data. A part end face profile measuring device is proposed, which is easy to operate and can provide high-accuracy part end face measurement data, thereby improving the efficiency and detection accuracy of the end face profile of annular parts.

[0007] The utility model provides a part end face profile measuring device, comprising: a measuring device main body;

[0008] The measuring device body includes: a machine base, a C-axis unit, a workbench, a two-axis moving unit and a probe unit;

[0009] The machine base comprises: a mounting platform; a C-axis unit and a two-axis moving unit are respectively arranged on the mounting platform;

[0010] The C-axis unit includes: an air-floating turntable and an adjustment platform arranged on the air-floating turntable; a workbench is arranged on the adjustment platform;

[0011] A probe unit is arranged on the two-axis moving unit, and the probe unit is located above the workbench.

[0012] Preferably, columns are respectively arranged at both ends of the installation platform, and the tops of the two columns are connected to a crossbeam.

[0013] Preferably, the two-axis moving unit comprises: an X-axis moving unit and a Z-axis moving unit;

[0014] The X-axis moving unit comprises: an X-axis servo linear module, the X-axis servo linear module is slidably arranged on the crossbeam and driven by an X-axis servo motor;

[0015] The Z-axis moving unit comprises: a Z-axis servo linear module, which is slidably arranged on the X-axis servo linear module and driven by a Z-axis servo motor.

[0016] Preferably, a fixture installation hole is reserved on the workbench; a clamping and positioning fixture is installed on the fixture installation hole;

[0017] A dial indicator mounting hole is reserved on the workbench; a dial indicator is mounted on the dial indicator mounting hole.

[0018] Preferably, the probe unit comprises: a micro-displacement sensor;

[0019] The micro displacement sensor is externally provided with a sensor protection cover, and the sensor protection cover is mounted on the two-axis moving unit through a sensor mounting plate.

[0020] Preferably, it also includes: an industrial computer;

[0021] The industrial computer is located at the lower part of the machine base and is shielded by the front cabinet door, the rear cabinet door, the left cabinet door, and the right cabinet door;

[0022] The industrial computer is connected to the micro-displacement sensor signal; the industrial computer is connected to a display and a keyboard.

[0023] Preferably, a three-color lamp and an LED lamp are provided on the top of the base;

[0024] The three-color lamp and the LED lamp are electrically connected to the industrial control machine respectively.

[0025] Preferably, the base has a lower table top and an upper table top;

[0026] A button box is arranged on the upper table top, and the button box is electrically connected to the industrial control machine;

[0027] The right cabinet door is provided with a plug, a socket and a triple-joint piece; the plug, the socket and the triple-joint piece are respectively connected to the industrial control machine.

[0028] The utility model provides a part end face profile measuring device, which has the following beneficial effects:

[0029] 1. The utility model can collect the surface contour point cloud data of the end face of the part, provide data support for the processing and analysis of the end face contour of the part, with high data accuracy, not affected by the operation methods of different personnel, and improve the measurement efficiency. The parts are placed accurately, easy to align, with high measurement accuracy, simple operation, and not prone to misjudgment. The application scenarios are not restricted and the measurement cost is low.

[0030] 2. The utility model installs three micro switches at the lowest end of the micro displacement sensor, which can effectively avoid the collision between the probe unit and the surface of the part to be measured due to misoperation, thereby avoiding damage to the micro displacement sensor and the part to be measured.

[0031] 3. The X-axis moving unit and the Z-axis moving unit of the utility model are driven by servo motors, with high control accuracy and very accurate position accuracy. The data collection and output of the utility model can be carried out by industrial computers, which improves the efficiency and precision of end face detection.

[0032] 4. The utility model industrial computer adopts industrial-grade chips, which are anti-interference, anti-dust, and anti-vibration. It can adapt to harsh industrial sites and provides abundant expansion space. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of a part end face profile measuring device provided by the utility model;

[0034] Figure 2 This is a front view of the part end face profile measuring device provided by the utility model;

[0035] Figure 3 It is a left view of the part end face profile measuring device provided by the utility model;

[0036] Figure 4 It is a top view of the part end face profile measuring device provided by the utility model;

[0037] Figure 5 It is a structural schematic diagram of the C-axis unit, the probe unit and the two-axis moving unit provided by the utility model;

[0038] Figure 6 It is a schematic diagram of the installation of the micro switch provided by the utility model.

[0039] Figure numerals: 1. Installation platform; 2. Column; 3. Beam; 4. Air-floating turntable; 5. Adjustment platform; 6. Workbench; 7. X-axis servo linear module; 8. Z-axis servo linear module; 9. Sensor mounting plate; 10. Sensor protection cover; 11. Lower table board; 12. Upper table board; 13. Top acrylic plate; 14. Front cabinet door; 15. Rear cabinet door; 16. Left cabinet door; 17. Right cabinet door; 18. Window frame longitudinal profile; 19. Window frame longitudinal profile handle; 20. Front window transverse profile; 21. Left window transverse profile; 22. Side acrylic plate; 23. Rear window transverse profile; 24. Display; 25. Industrial computer; 26. Button box; 27. Plug and socket; 28. Triplex; 29. ​​Tricolor lamp; 30. LED lamp; 31. Micro switch; 32. Fixture mounting hole; 33. Dial indicator mounting hole. DETAILED DESCRIPTION

[0040] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the sake of ease of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all of the contents.

[0041] Embodiment 1

[0042] like Figure 1-4 As shown, an embodiment of the utility model provides a part end face profile measuring device, including: a measuring device body.

[0043] The measuring device body comprises: a machine base, a C-axis unit, a workbench 6, a two-axis moving unit and a probe unit.

[0044] The machine base adopts a frame structure, which is composed of multiple profile structures such as a front window longitudinal profile 18, a front window transverse profile 20, a left window transverse profile 21, and a rear window transverse profile 23. A top acrylic plate 13 is installed on the top of the frame structure, and a side acrylic plate 22 is installed on the side; a window frame longitudinal profile handle 19 is set at the front end of the frame structure, which can open and close the front upper cabinet door.

[0045] The base has a lower table top 11 and an upper table top 12 .

[0046] The machine base comprises: a mounting platform 1; a C-axis unit and two-axis moving units are respectively arranged on the mounting platform 1.

[0047] The two ends of the installation platform 1 are provided with columns 2, and the tops of the two columns 2 are connected to a crossbeam 3. The columns 2 and the crossbeam 3 are used to install a two-axis moving unit, so that the probe unit on the two-axis moving unit faces the workbench 6.

[0048] The two-axis moving unit includes: an X-axis moving unit and a Z-axis moving unit. The X-axis moving unit includes: an X-axis servo linear module 7, which is slidably arranged on the crossbeam 3 and driven by the X-axis servo motor; the Z-axis moving unit includes: a Z-axis servo linear module 8, which is slidably arranged on the X-axis servo linear module 7 and driven by the Z-axis servo motor.

[0049] The X-axis moving unit and the Z-axis moving unit are driven by servo motors. The rotor speed of the servo motor is controlled by the input signal and can respond quickly to convert the received electrical signal into angular displacement or angular velocity output on the motor shaft.

[0050] The two-axis moving unit is provided with a probe unit, and the probe unit is located above the workbench 6 .

[0051] The probe unit includes: a micro displacement sensor; the micro displacement sensor adopts a fiber coaxial micro displacement sensor, adopts a white light confocal method or a triangular laser reflection method, for example, the model is Omron ZW-7000. The micro displacement sensor is added with a sensor protection cover 10, and the sensor protection cover 10 is installed on the two-axis moving unit through the sensor mounting plate 9, specifically installed on the Z-axis servo linear module 8. In addition, in this embodiment, the micro displacement sensor can be a contact probe or a non-contact probe.

[0052] like Figure 5 As shown, the C-axis unit includes: an air-floating turntable 4 and an adjustment platform 5 arranged on the air-floating turntable 4; a workbench 6 is arranged on the adjustment platform 5, and the adjustment platform 5 is used to adjust the workbench 6. The air-floating turntable 4 realizes C-axis movement. The air-floating turntable 4 is pneumatically controlled or driven by a DC brushless motor, and the bearing form of the air-floating turntable 4 and the two-axis moving unit is air static pressure. The workbench 6 is used to place the annular parts to be measured.

[0053] A fixture mounting hole 32 is reserved on the workbench 6; a clamping and positioning fixture is installed on the fixture mounting hole 32; the clamping and positioning fixture can be composed of a plurality of positioning blocks, each positioning block is installed on the fixture mounting hole 32, each positioning block can adjust the clamping position, and the shape of the positioning block is adapted to the shape of the part.

[0054] The workbench 6 is provided with a dial gauge installation hole 33; a dial gauge is installed on the dial gauge installation hole 33, and the dial gauge is used for centering. After the clamping and positioning fixture completes the preliminary positioning, the centering is performed; the probe of the dial gauge points to the outer wall of the part, and the position of the part is adjusted. After the reading of the dial gauge reaches the requirement, the center of the part is aligned with the center of the probe unit; after the centering is completed, the clamping and positioning fixture is installed to lock the part, and the clamping is completed.

[0055] like Figure 6 As shown, the utility model installs three micro switches 31 at the lowest end of the micro displacement sensor, which can effectively avoid the collision between the probe unit and the surface of the part to be measured due to misoperation, thereby avoiding damage to the micro displacement sensor and the part to be measured.

[0056] The part end face profile measuring device of this embodiment further includes: an industrial computer 25; the industrial computer 25 is located at the lower part of the machine base and is shielded by the front cabinet door 14, the rear cabinet door 15, the left cabinet door 16, and the right cabinet door 17. The industrial computer 25 is connected to the micro-displacement sensor signal; the industrial computer 25 is connected to the display 24 and the keyboard, and the display 24, the keyboard and the mouse are placed on the upper table 12 to exchange information with the industrial computer 25.

[0057] A three-color lamp 29 and an LED lamp 30 are arranged on the top of the base; the three-color lamp 29 and the LED lamp 30 are electrically connected to the industrial computer 25 respectively. A button box 26 is arranged on the upper table board 12, and the button box 26 is electrically connected to the industrial computer 25; a plug socket 27 and a triple joint 28 are installed on the right cabinet door 17; the plug socket 27 and the triple joint 28 are electrically connected to the industrial computer 25 respectively.

[0058] The industrial computer 25 receives the surface contour point cloud data of the part end face measured by the micro-displacement sensor, and provides data support for the processing and analysis of the part end face contour. The data has high accuracy and is not affected by the operating methods of different personnel, thereby improving the measurement efficiency.

[0059] The working process of a part end face contour measuring device of the utility model is as follows: the part to be measured is placed on a workbench 6, a clamping and positioning fixture is installed to preliminarily position the part, the position of the part is adjusted so that the reading of the dial indicator meets the requirements, and the center of the part and the center of the probe unit are aligned. The clamping and positioning fixture is installed to lock the part, the part is clamped in the center, and the annular outer contour of the part is coaxial with the C-axis unit. The two-axis moving unit works, and the probe unit is moved to the top of the starting measurement point to start the measurement. The two-axis moving unit drives the probe unit to move synchronously, and the probe unit collects the surface contour point cloud data of the end face of the part during the movement to realize data measurement and provide data support. The probe unit sends the collected data to the industrial computer 25, and the staff processes and analyzes the data through the industrial computer 25. The industrial computer 25 can also transmit the data to the external control center, and the staff analyzes and processes the data through the external control center.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that modifying the technical solutions recorded in the aforementioned embodiments, or replacing part or all of the technical features therein by equivalents, does not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A device for measuring the end face profile of a part, characterized in that: include: Measuring device body; The measuring device body comprises: a machine base, a C-axis unit, a workbench (6), a two-axis moving unit and a probe unit; The machine base comprises: a mounting platform (1); a C-axis unit and two-axis moving units are respectively arranged on the mounting platform (1); The C-axis unit comprises: an air-floating turntable (4) and an adjustment platform (5) arranged on the air-floating turntable (4); a workbench (6) is arranged on the adjustment platform (5); A probe unit is arranged on the two-axis moving unit, and the probe unit is located above the workbench (6).

2. The part end face profile measuring device according to claim 1, characterized in that: Vertical columns (2) are respectively arranged at both ends of the installation platform (1), and the tops of the two vertical columns (2) are connected to a crossbeam (3).

3. The part end face profile measuring device according to claim 2, characterized in that: The two-axis moving unit includes: an X-axis moving unit and a Z-axis moving unit; The X-axis moving unit comprises: an X-axis servo linear module (7), wherein the X-axis servo linear module (7) is slidably arranged on the crossbeam (3) and driven by an X-axis servo motor; The Z-axis moving unit comprises: a Z-axis servo linear module (8), wherein the Z-axis servo linear module (8) is slidably arranged on the X-axis servo linear module (7) and is driven by a Z-axis servo motor.

4. The part end face profile measuring device according to claim 1, characterized in that: A fixture installation hole (32) is reserved on the workbench (6); a clamping and positioning fixture is installed on the fixture installation hole (32); A dial gauge mounting hole (33) is reserved on the workbench (6); a dial gauge is mounted on the dial gauge mounting hole (33).

5. The part end face profile measuring device according to claim 1, characterized in that: The probe unit comprises: a micro-displacement sensor; The micro-displacement sensor is provided with a sensor protection cover (10), and the sensor protection cover (10) is mounted on a two-axis moving unit via a sensor mounting plate (9).

6. The part end face profile measuring device according to claim 1, characterized in that: Also includes: Industrial computer (25); The industrial computer (25) is located at the lower part of the machine base and is shielded by the front cabinet door (14), the rear cabinet door (15), the left cabinet door (16), and the right cabinet door (17); The industrial computer (25) is connected to the micro-displacement sensor signal; the industrial computer (25) is connected to the display (24) and the keyboard.

7. The part end face profile measuring device according to claim 6, characterized in that: A three-color lamp (29) and an LED lamp (30) are arranged on the top of the base; The three-color lamp (29) and the LED lamp (30) are electrically connected to the industrial computer (25) respectively.

8. The part end face profile measuring device according to claim 6, characterized in that: The machine base has a lower table top (11) and an upper table top (12); A button box (26) is provided on the upper table top (12), and the button box (26) is electrically connected to the industrial computer (25); The right cabinet door (17) is provided with a plug socket (27) and a triplex (28); the plug socket (27) and the triplex (28) are electrically connected to an industrial computer (25) respectively.

Images