CN213067484U - Automatic measuring device for eccentric shaft - Google Patents
Automatic measuring device for eccentric shaft Download PDFInfo
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- CN213067484U CN213067484U CN202021389868.2U CN202021389868U CN213067484U CN 213067484 U CN213067484 U CN 213067484U CN 202021389868 U CN202021389868 U CN 202021389868U CN 213067484 U CN213067484 U CN 213067484U
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- motor
- measuring device
- sliding table
- screw rod
- eccentric shaft
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000010923 batch production Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
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Abstract
The utility model relates to an automatic measuring device of an eccentric shaft, which comprises a moving platform, an adjusting seat and a sensor assembly, wherein the moving platform comprises a motor, a screw rod and a sliding table, one end of the screw rod is screwed in the sliding table, the other end of the screw rod is connected with an output shaft of the motor, and the sliding table can be driven by the motor to perform vertical displacement; the adjusting seat is connected to the sliding table and provided with an X-direction adjusting knob, a Y-direction adjusting knob and a Z-direction adjusting knob; the sensor assembly comprises a side head assembly and a sensor mounting support, the first measuring head assembly and the second measuring head assembly are arranged on the sensor mounting support, the sensor mounting support is arranged on the adjusting seat, and the adjusting seat can adjust the spatial position of the sensor assembly to match the setting position of the crankshaft to be measured. Compared with the prior art, the utility model discloses the utensil can more accurately, swiftly detect the phase relation of eccentric shaft, improves and detects precision, easy operation.
Description
Technical Field
The utility model belongs to the technical field of precision test measurement technique, precision instruments and mechanical transmission and specifically relates to an eccentric shaft automatic measuring device is related to.
Background
The eccentric shaft on the RV reducer consists of two eccentric sections, and the phase control of the two eccentric sections is difficult in the processing process. In order to ensure the machining precision of the eccentric shaft, the highest point and the lowest point of two eccentric sections of the crankshaft need to be detected in the production process, so that the tool setting at the initial machining position of a machine tool is facilitated. The processing plant generally adopts a manual table-making mode to find the highest point and the lowest point of the crankshaft, and the method is limited by manual experience and proficiency, has low efficiency and is not suitable for large-batch production processes.
CN104108055B discloses a positioning device for processing crankshaft eccentric shaft, the cross section of the crankshaft is circular, the crankshaft includes a main shaft, an eccentric shaft and an auxiliary shaft which are connected in turn along the axial direction, the positioning device includes: the crankshaft is arranged on the base; the driving assembly is matched with the crankshaft to drive the crankshaft to rotate around the central axis of the main shaft; the measuring component is arranged on the base and comprises a measuring head, the measuring head is abutted against the outer surface of the eccentric shaft to measure the distance between the axis of the main shaft and the measuring head, and the driving component stops working when the distance between the axis of the main shaft and the measuring head is equal to the radius of the eccentric shaft. When the technical scheme is applied to a test scene of an eccentric shaft on the RV reducer, flexible adjustment of a measurement site is difficult to realize, and the batch test requirement of industrial production is difficult to realize.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a not high, the inefficiency defect in order to compensate detection device precision, provide the novel structure that detects in the bent axle course of working, can automatic high accuracy detect the phase place of bent axle, realize that the bent axle provides the guarantee for the processing stability of bent axle, can realize the detection flow of mass simultaneously.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides an eccentric shaft automatic measuring device, including moving platform, adjustment seat, sensor module, wherein specifically:
the moving platform comprises a motor, a screw rod and a sliding table, one end of the screw rod is in threaded connection with the sliding table, the other end of the screw rod is connected with an output shaft of the motor, and the sliding table can be driven by the motor to vertically displace;
the adjusting seat is connected to the sliding table and provided with an X-direction adjusting knob, a Y-direction adjusting knob and a Z-direction adjusting knob;
the sensor assembly comprises a side head assembly and a sensor mounting support, the first measuring head assembly and the second measuring head assembly are arranged on the sensor mounting support, the sensor mounting support is arranged on the adjusting seat, and the adjusting seat can adjust the spatial position of the sensor assembly to match the setting position of the crankshaft to be measured.
Furthermore, the mobile platform also comprises a base, wherein the base is of an L-shaped structure and comprises a vertical plate and a transverse plate;
vertical linear guide rails are arranged on the vertical plates, and the transverse plates are connected with the motor.
Furthermore, an internal thread hole matched with the external thread of the screw rod is formed in the sliding table, and one end of the screw rod is in threaded connection with the internal thread hole.
Furthermore, one side of the sliding table is arranged on the linear guide rail, and when the screw rod rotates, the sliding table linearly displaces along the linear guide rail.
Further, an output shaft of the motor is connected with the end part of the screw rod through a coupler.
Further, the output shaft of the motor penetrates through the transverse plate and is connected with one end of the coupler.
Further, the adjusting seat adopts a NT01PS3 three-dimensional probe station, which can adjust the position in three directions of XYZ axes, and each direction is provided with a scale mark.
Further, the motor is a servo motor, and the motor is connected with an external computer terminal.
Furthermore, the side head assembly comprises a first measuring head assembly and a second measuring head assembly, and the first measuring head assembly and the second measuring head assembly correspond to the first crankshaft eccentric section and the second crankshaft eccentric section respectively in position.
Further, the first measuring head assembly and the second measuring head assembly are both SDVH8B pen type LVDT displacement sensors.
Further, the crankshaft to be tested is an RV reducer crankshaft.
Compared with the prior art, the utility model has the advantages of it is following:
1) the method can detect the phase relation of the eccentric shafts more accurately and quickly, improves the detection precision, is simple to operate, and can be suitable for large-batch production processes of the eccentric shafts on the RV speed reducer.
2) After the crankshaft to be measured rotates for a circle, the measuring head component can automatically measure the high point and the low point of the crankshaft, signals of 2 channels are obtained, the signals are converted into 2 paths of digital quantity signals through the acquisition card, and the phase relation of the two eccentric section crankshafts can be obtained through data processing of the 2 paths of digital signals.
Drawings
FIG. 1 is a front view of the novel structure of the automatic measuring device of the present invention;
FIG. 2 is a left side view of the novel structure of the automatic measuring device of the present invention;
fig. 3 is the novel structural sensor layout of the automatic measuring device of the utility model.
In the figure:
10-crankshaft to be tested 34-slide
11-first crankshaft eccentric section 35-base
12-second crankshaft eccentric section 36-guide rail
20-sensor assembly 40-adjustment seat
21-first measuring head assembly 41-X direction adjusting knob
22-second measuring head component 42-Y direction adjusting knob
23-sensor mounting bracket 43-Z direction adjusting knob
30-mobile platform 44 switching base
31-electric machine
32-shaft coupling
33-screw mandrel
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The utility model provides an eccentric shaft automatic measuring device, including moving platform 30, adjusting seat 40, sensor module 20, refer to fig. 1 to 3.
The moving platform 30 comprises a motor 31, a screw rod 33 and a sliding table 34, one end of the screw rod 33 is screwed in the sliding table 34, the other end of the screw rod is connected with an output shaft of the motor 31, and the sliding table 34 can be driven by the motor 31 to perform vertical displacement. The mobile platform 30 further includes a base 35, and the base 35 is an L-shaped structure including a vertical plate and a horizontal plate. Vertical linear guide rails are arranged on the vertical plates, and the transverse plates are connected with the motor 31. An internal threaded hole matched with the external thread of the screw rod 33 is formed in the sliding table 34, and one end of the screw rod 33 is in threaded connection with the internal threaded hole. One side of the sliding table 34 is arranged on the linear guide rail, and when the screw rod 33 rotates, the sliding table 34 linearly displaces along the linear guide rail. The output shaft of the motor 31 is connected to the end of the lead screw 33 through a coupling 32. An output shaft of the motor 31 penetrates the transverse plate and is connected with one end of the coupling 32. The motor 31 is a servo motor, and the motor 31 is connected with an external computer terminal.
The adjusting seat 40 is connected to the sliding table 34, and is provided with an X-direction adjusting knob 41, a Y-direction adjusting knob 42, and a Z-direction adjusting knob 43. In specific implementation, the adjusting seat 40 adopts an NT01PS3 three-dimensional probe station, which can perform position adjustment in three directions of XYZ axes, and each direction has a graduation line.
The sensor assembly 20 comprises a side head assembly and a sensor mounting support 23, the first measuring head assembly 21 and the second measuring head assembly 22 are arranged on the sensor mounting support 23, the sensor mounting support 23 is arranged on the adjusting seat 40, and the adjusting seat 40 can adjust the space position of the sensor assembly 20 so as to match the setting position of the crankshaft 10 to be measured.
The side head assembly comprises a first measuring head assembly 21 and a second measuring head assembly 22, and the first measuring head assembly 21 and the second measuring head assembly 22 correspond to the first crankshaft eccentric section 11 and the second crankshaft eccentric section 12 in position respectively. The first gauge head assembly 21 and the second gauge head assembly 22 are both SDVH8B pen LVDT displacement sensors.
The crankshaft 10 to be tested is an RV reducer crankshaft, and when the crankshaft 10 to be tested is used specifically, the crankshaft 10 to be tested is fixed on a machine tool fixture; two stylus assemblies, each having 2 pen sensors, are secured to the sensor assembly 20 by a sensor mounting bracket 23. Sensor assembly 20 is coupled to adjustment block 40 via sensor mounting bracket 23. The adjusting seat 4 is connected with the moving platform 30 through a sliding table 34; the sliding table 34 is connected with the base 35 through a guide rail 36, and the motor 31 is connected with the screw rod 33 through the coupler 32, and the screw rod is used for driving the sliding table to move.
When the device is used, after the crankshaft 10 to be measured is mounted on the processing machine tool, the motor 31 is powered on, the mobile platform 30 drives the sensor assembly 20 to be close to the surface of the crankshaft 10, and the sensor assembly 20 is adjusted to be close to the measuring position of the crankshaft to be measured through the X-direction adjusting knob 41, the Y-direction adjusting knob 42 and the Z-direction adjusting knob 43 on the adjusting seat 40; after the position of the adjusting seat 40 is adjusted once, the relative position is fixed, and subsequently, only the crankshaft to be measured needs to be replaced, and only the moving platform 30 needs to perform feeding motion each time.
When the method is used, the first measuring head component 21 and the second measuring head component 22 are respectively contacted with the eccentric section of the crankshaft to be measured, after the crankshaft to be measured rotates for a circle, the measuring head component can automatically measure the high point and the low point of the crankshaft, 2 channels of signals are obtained and then converted into 2 channels of digital quantity signals through the acquisition card, and the phase relation of the two eccentric section crankshafts can be obtained through data processing of the 2 channels of digital signals.
The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.
Claims (10)
1. An automatic measuring device for an eccentric shaft, comprising:
the moving platform (30) comprises a motor (31), a screw rod (33) and a sliding table (34), one end of the screw rod (33) is in threaded connection with the sliding table (34), the other end of the screw rod is connected with an output shaft of the motor (31), and the sliding table (34) can be driven by the motor (31) to vertically displace;
the adjusting seat (40) is connected to the sliding table (34) and is provided with an X-direction adjusting knob (41), a Y-direction adjusting knob (42) and a Z-direction adjusting knob (43);
sensor subassembly (20), including side head subassembly and sensor installing support (23), the side head subassembly is located on sensor installing support (23), sensor installing support (23) are located on adjustment seat (40), adjustment seat (40) can adjust the spatial position of sensor subassembly (20) to this matches the position that sets up of awaiting measuring bent axle (10).
2. The automatic measuring device of claim 1, wherein the moving platform (30) further comprises a base (35), the base (35) is an L-shaped structure comprising a vertical plate and a transverse plate;
vertical linear guide rails are arranged on the vertical plates, and the transverse plates are connected with the motor (31).
3. The automatic measuring device of the eccentric shaft according to claim 2, characterized in that the sliding table (34) is provided with an internal threaded hole matching with the external thread of the screw rod (33), and one end of the screw rod (33) is screwed in the internal threaded hole.
4. The automatic measuring device of the eccentric shaft according to claim 3, characterized in that one side of the sliding table (34) is arranged on a linear guide rail, and the sliding table (34) linearly displaces along the linear guide rail when the screw rod (33) rotates.
5. The automatic measuring device of the eccentric shaft according to claim 2, characterized in that the output shaft of the motor (31) is connected with the end of the lead screw (33) through a coupling (32).
6. The automatic measuring device of claim 5, wherein the output shaft of the motor (31) penetrates the transverse plate and is connected with one end of the coupling (32).
7. The automatic measuring device of claim 1, wherein the motor (31) is a servo motor, and the motor (31) is connected to an external computer terminal.
8. The automatic measuring device of the eccentric shaft according to the claim 1, characterized in that the side head assembly comprises a first measuring head assembly (21) and a second measuring head assembly (22), and the first measuring head assembly (21) and the second measuring head assembly (22) correspond to the position of the first crankshaft eccentric section (11) and the second crankshaft eccentric section (12) respectively.
9. The automatic eccentric shaft measuring device according to claim 8, characterized in that the first feeler unit (21) and the second feeler unit (22) are both SDVH8B pen type LVDT displacement sensors.
10. The automatic measuring device of an eccentric shaft according to claim 1, characterized in that the crankshaft (10) to be measured is an RV reducer crankshaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021389868.2U CN213067484U (en) | 2020-07-15 | 2020-07-15 | Automatic measuring device for eccentric shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021389868.2U CN213067484U (en) | 2020-07-15 | 2020-07-15 | Automatic measuring device for eccentric shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213067484U true CN213067484U (en) | 2021-04-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021389868.2U Active CN213067484U (en) | 2020-07-15 | 2020-07-15 | Automatic measuring device for eccentric shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213067484U (en) |
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2020
- 2020-07-15 CN CN202021389868.2U patent/CN213067484U/en active Active
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