Device for measuring tooth alignment precision of countershaft assembly of heavy truck

Abstract

The utility model discloses a device for measuring the tooth alignment precision of a countershaft assembly of a heavy truck, relates to a gear measuring device, and aims to solve the problem that the conventional detection equipment cannot meet the rapid detection of the tooth alignment precision of a countershaft of the heavy truck. The lower clamping assembly, the workpiece stand column and the horizontal moving machine are all installed on the upper surface of the workbench, and the upper clamping assembly is slidably connected with the workpiece stand column and reciprocates up and down in the height direction of the workpiece stand column. The lower end of the measuring stand column is connected with the horizontal moving mechanism, the vertical moving mechanism is connected with the measuring stand column in a sliding mode, and the detection assembly is installed on the vertical moving mechanism and reciprocates up and down in the height direction of the measuring stand column through the vertical moving mechanism. The utility model belongs to the technical field of gear detection. The device is high in measurement precision, can achieve the rapid detection of the countershaft of the heavy truck, and greatly improves the detection efficiency.

Description

Technical Field

[0001] The utility model relates to a gear measuring device, in particular to a device for measuring the tooth alignment accuracy of a heavy truck countershaft assembly. The utility model belongs to the technical field of gear detection. Background Art

[0002] With the development of the gear industry, gear measurement has formed its own system from theory to technology and then to practice in the 20th century. Gear measurement is traditionally divided into: analytical measurement based on tooth profile, tooth direction and tooth pitch measurement, functional measurement based on comprehensive measurement (double meshing and single meshing measurement), and overall gear error measurement that integrates single items and comprehensive measurement.

[0003] Overall, the development of gear measurement technology in the 20th century can be seen in three aspects: first, in terms of measurement principles, it has developed from "comparative measurement" to "meshing motion measurement" and finally to "modeled measurement"; second, in terms of technical means to realize measurement principles, it has evolved from "mechanical-based" to "mechanical-electrical combination" and finally to the comprehensive integration of "optical-mechanical-electrical" and "information technology"; third, in terms of the expression and utilization of measurement results, it has evolved from "indicator + naked eye reading" to "recorder + manual judgment" and finally to "computer automatic analysis + closed-loop manufacturing".

[0004] The traditional gear precision theory is not strict for controlling gear quality, is incomplete for understanding gear error characteristics, and is inaccurate for analyzing error sources. The two fundamental tasks of gear measurement are to solve the problems of gear processing technology analysis and gear performance prediction. The essence of this is the two problems of gear evaluation based on gear measurement and the application of measurement results.

[0005] As for the secondary shaft of heavy trucks, its workpiece is larger than other workpieces. The existing detection means generally use three-coordinate measuring machine for detection. The detection speed is slow. It takes about 40 minutes to detect a product. In addition, the operation is complicated, which affects the measurement efficiency. Utility Model Content

[0006] The utility model aims to solve the problem that the existing detection equipment cannot meet the requirement of rapid detection of the gear alignment accuracy of a heavy truck countershaft, and further proposes a device for measuring the gear alignment accuracy of a heavy truck countershaft assembly.

[0007] The technical solution adopted by the utility model to solve the above problems is:

[0008] The utility model comprises a base, a workbench, a workpiece column, a measuring column, a lower clamping assembly, an upper clamping assembly, a vertical moving mechanism, a horizontal moving mechanism and a detection assembly. The base is provided with a workbench, the lower clamping assembly, the workpiece column and the horizontal moving machine are all mounted on the upper surface of the workbench, the upper clamping assembly is slidably connected to the workpiece column, and the upper clamping assembly reciprocates up and down along the height direction of the workpiece column; the lower end of the measuring column is connected to the horizontal moving mechanism, the vertical moving mechanism is slidably connected to the measuring column, the detection assembly is mounted on the vertical moving mechanism, and the detection assembly reciprocates up and down along the height direction of the measuring column through the vertical moving mechanism.

[0009] Furthermore, the lower clamping assembly includes a driving spindle and a lower center, the driving spindle is installed on one side of the upper surface of the workbench, and the lower end of the lower center is fixedly connected to the upper end of the driving spindle.

[0010] Furthermore, the upper clamping assembly includes an upper center, a first motor, a first guide rail, a first lead screw and a first slider. The two first guide rails are vertically and parallelly arranged on the inner side of the workpiece column. The first lead screw is installed between the two guide rails. Both ends of the first lead screw are fixed to the workpiece column through fixing parts. The first motor is installed on the upper part of the workpiece column, and its output shaft is fixedly connected to the upper end of the first lead screw. A nut is mounted on the first lead screw, and the first slider is fixedly installed with the nut. The first slider is slidably connected to the two guide rails, and the upper end of the upper center is connected to the first slider.

[0011] Furthermore, the horizontal moving mechanism includes a second motor, a second guide rail, a second lead screw and a second slider. The two second guide rails are arranged in parallel on the upper surface of the workbench and are located on the right side of the driving spindle. The second lead screw is installed between the two horizontal guide rails. The second motor is installed on the right side of the workbench. The output shaft of the second motor is fixedly connected to one end of the second lead screw. A nut is mounted on the second lead screw. The second slider is fixedly installed with the nut, and the second slider is slidably connected to the two second guide rails. The lower end of the measuring column is installed on the upper surface of the horizontal slider.

[0012] Furthermore, the vertical movement mechanism includes a third motor, a third guide rail, a third lead screw and a third slider. The two third guide rails are parallel and vertically arranged on the inner side of the measuring column. The third lead screw is installed between the two third guide rails. Both ends of the third guide rail are fixed to the measuring column through fixing parts. The third motor is installed on the upper part of the measuring column, and its output shaft is fixedly connected to the upper end of the third lead screw. A nut is mounted on the third lead screw. The third slider is fixedly installed with the nut, and the third slider is slidably connected to the two third guide rails. The detection assembly is installed on the third slider.

[0013] Furthermore, the detection assembly includes a pin hole recognition sensor and a three-dimensional probe, and the pin hole recognition sensor and the three-dimensional probe are both installed on the third slider.

[0014] Furthermore, the device for measuring the gear alignment accuracy of a heavy truck countershaft assembly also includes a display, which is mounted on the upper surface of the base via a bracket.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model can realize the positioning and clamping of the workpiece to be tested by the cooperation between the upper and lower clamping components;

[0017] 2. The utility model can realize the movement of the pin hole identification sensor and the three-dimensional probe in the vertical and horizontal directions through the horizontal movement mechanism and the vertical movement mechanism, find the position to be measured and pre-position it through the sensor, drive the spindle to drive the center to rotate through the motor, and realize the accurate measurement of the gear accuracy through the three-dimensional probe;

[0018] 3. The detection speed of gears is greatly improved by the utility model, and a measurement is completed in about 100 seconds, which can realize the rapid detection of the secondary shaft of heavy trucks and improve the detection efficiency;

[0019] 4. The utility model has high measurement accuracy and can meet the assembly accuracy requirements of the secondary shaft assembly: ≤0.10-0.05~+0.05)), and the operation is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of a device for measuring the gear alignment accuracy of a heavy truck countershaft assembly according to the utility model;

[0021] Figure 2 This is an axonometric diagram of a device for measuring the gear alignment accuracy of a heavy truck countershaft assembly;

[0022] Figure 3 yes Figure 2 A partial enlarged view of .

[0023] In the figure: 1-base; 2-workbench; 3-workpiece column; 4-measuring column; 5-driving spindle; 6-lower center; 7-upper center; 8-first guide rail; 9-first lead screw; 10-first slider; 11-second guide rail; 12-second lead screw; 13-second slider; 14-third guide rail; 15-third lead screw; 16-third slider; 17-pin hole recognition sensor; 18-three-dimensional probe; 19-display. DETAILED DESCRIPTION

[0024] Specific implementation method 1: Combination Figure 1 to Figure 2The present embodiment is described. The present embodiment describes a device for measuring the tooth accuracy and length of a heavy truck countershaft assembly, which comprises a base 1, a workbench 2, a workpiece column 3, a measuring column 4, a lower clamping assembly, an upper clamping assembly, a vertical moving mechanism, a horizontal moving mechanism and a detection assembly. The base 1 is provided with a workbench 2. The lower clamping assembly, the workpiece column 3 and the horizontal moving mechanism are all mounted on the upper surface of the workbench 2. The upper clamping assembly is slidably connected to the workpiece column 3, and the upper clamping assembly reciprocates up and down in the height direction of the workpiece column 3. The lower end of the measuring column 4 is connected to the horizontal moving mechanism, the vertical moving mechanism is slidably connected to the measuring column 4, the detection assembly is mounted on the vertical moving mechanism, and the detection assembly reciprocates up and down in the height direction of the measuring column 4 through the vertical moving mechanism.

[0025] Specific implementation method 2: Combination Figure 1 to Figure 2 The present embodiment is described, and the lower clamping assembly described in the present embodiment includes a driving spindle 5 and a lower center 6. The driving spindle 5 is mounted on one side of the upper surface of the workbench 2, and the lower end of the lower center 6 is fixedly connected to the upper end of the driving spindle 5. The motor drives the spindle 5 to drive the lower center 2 to rotate, and the measurement is realized by cooperating with the probe.

[0026] The other components and connection relationships of this embodiment are the same as those of the first embodiment.

[0027] Specific implementation method three: Combination Figure 1 to Figure 2 The present embodiment is described. The upper clamping assembly of the present embodiment includes an upper center 7, a first motor, a first guide rail 8, a first lead screw 9 and a first slider 10. The two first guide rails 8 are arranged vertically and parallelly on the inner side of the workpiece column 3. The first lead screw 9 is installed between the two guide rails 10. Both ends of the first lead screw 9 are fixed to the workpiece column 3 through fixing members. The first motor is installed in the workpiece column 3. Its output shaft is fixedly connected to the end of the first lead screw 9. A nut is mounted on the first lead screw 9. The first slider 10 is fixedly installed with the nut, and the first slider 10 is slidably connected to the two guide rails 10. The upper end of the upper center 7 is connected to the first slider 10. The lower end of the upper center 7 matches the upper end of the lower center 6 to achieve the clamping of the workpiece to be tested.

[0028] The other components and connection relationships of this embodiment are the same as those of the first or second embodiment.

[0029] Specific implementation method four: Combination Figure 1 to Figure 2This embodiment is described. The horizontal moving mechanism in this embodiment includes a second motor, a second guide rail 11, a second lead screw 12 and a second slider 13. The two second guide rails 11 are arranged in parallel on the upper surface of the workbench 2 and are located on the right side of the driving spindle 5. The second lead screw 12 is installed between the two second guide rails 11. The second motor is installed on the right side of the workbench 2. The output shaft of the second motor is fixedly connected to one end of the second lead screw 12. A nut is mounted on the second lead screw 12. The second slider 13 is fixedly installed with the nut, and the second slider 13 is slidably connected to the two second guide rails 11. The lower end of the measuring column 4 is installed on the upper surface of the second slider 13. The horizontal reciprocating motion of the measuring column 4 can be realized by the horizontal moving mechanism.

[0030] The other components and connection relationships of this embodiment are the same as those of the first, second or third embodiment.

[0031] Specific implementation method five: Combination Figure 1 to Figure 2 This embodiment is described. The vertical movement mechanism described in this embodiment includes a third motor, a third guide rail 14, a third lead screw 15 and a third slider 16. Two third guide rails 14 are parallel and vertically arranged on the inner side of the measuring column 4. The third lead screw 15 is installed between the two third guide rails 14. Both ends of the third guide rail 14 are fixed to the measuring column 4 through fixing members. The third motor is installed on the upper part of the measuring column 4. Its output shaft is fixedly connected to the upper end of the third lead screw 15. A nut is mounted on the third lead screw 15. The third slider 16 is fixedly installed with the nut, and the third slider 16 is slidably connected to the two third guide rails 14. The detection assembly is installed on the third slider 16. The vertical reciprocating motion of the detection assembly can be realized by the vertical movement mechanism.

[0032] The other components and connection relationships of this embodiment are the same as those of the first, second, third or fourth embodiment.

[0033] Specific implementation method six: Combination Figure 3 This embodiment is described. The detection assembly in this embodiment includes a pin hole recognition sensor 20 and a three-dimensional probe 21. Both the pin hole recognition sensor 20 and the three-dimensional probe 21 are installed on the third slide 19. A φ8 pin hole is provided on the workpiece to be tested. The pin hole recognition sensor 20 is used to find the position of the φ8 pin hole and pre-position it. Then, the three-dimensional probe 21 is used to measure the tooth accuracy of the workpiece. The probe can be a Renishaw brand three-dimensional probe, which has strong input force and accurate measurement.

[0034] The other components and connection relationships of this embodiment are the same as those of the first, second, third, fourth or fifth embodiment.

[0035] Specific implementation method seven: Combination Figure 1 to Figure 2To explain this embodiment, the device for measuring the gear accuracy of a heavy truck countershaft assembly described in this embodiment further includes a display 19, which is mounted on the upper surface of the base through a bracket. After the measurement, the detection machine communicates with the robot through I / O, analyzes the data, detects whether the workpiece is qualified or unqualified, and the data can be displayed on the display.

[0036] The other components and connection relationships of this embodiment are the same as those of the specific embodiments one, two, three, four, five or six.

[0037] Working principle:

[0038] The device of the utility model is used to detect the gear alignment accuracy of each gear position of the countershaft assembly, with AB / C as the reference, and the symmetry at AA / BB / CC / DD is detected). The gear alignment accuracy measurement reference C is located in the leftmost transmission gear tooth groove rotated 180° from the countershaft process hole. The gear alignment accuracy detection equipment must be compatible with all product types of the above two units).

[0039] The measurement method is as follows:

[0040] Step 1: Place the workpiece to be measured at the lower top by the manipulator, drive the first lead screw 9 to rotate by the first motor, and drive the first slider 10 to move downward along the first guide rail 8 by the first nut, so that the upper top 7 moves toward the lower top 6, and the workpiece to be measured is positioned and clamped by the upper and lower tops;

[0041] Step 2: The third motor drives the third lead screw 15 to rotate, and the third nut drives the third slider 16 to move vertically along the third guide rail 14; the second motor drives the second lead screw 12 to rotate, and the second nut drives the second slider 13 to move horizontally along the second guide rail 11; the pin hole identification sensor 17 installed on the third slider 16 finds the position of the φ8 pin hole and pre-positions it;

[0042] Step 3: The motor drives the main shaft 5 to rotate the lower center 2 and then the workpiece to be tested, and cooperates with the three-dimensional probe 18 to identify the reference teeth to detect the tooth alignment accuracy and end face height or the reference teeth to detect the left or right secondary shaft assembly tooth alignment accuracy and temporarily place it in the cache position, detect the right or left secondary shaft assembly tooth alignment accuracy, and calculate the left and right secondary shaft assembly pairing deviation);

[0043] Step 4: After the measurement, the inspection machine communicates with the robot through I / O, analyzes the data, and detects whether the workpiece is qualified or unqualified. The data can be displayed on the monitor;

[0044] Step 5: Code the qualified workpieces (the qualified sub-shaft assembly is coded in pairs) and flow into the next process, and the unqualified workpieces enter the unqualified material channel.

[0045] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement of the above embodiments made according to the technical essence of the present invention, within the spirit and principles of the present invention, without departing from the content of the technical solution of the present invention, still fall within the protection scope of the technical solution of the present invention.

Claims

1. A device for measuring the gear alignment accuracy of a heavy truck countershaft assembly, characterized in that: The device for measuring the tooth alignment accuracy of a heavy truck secondary shaft assembly comprises a base (1), a worktable (2), a workpiece column (3), a measuring column (4), a lower clamping assembly, an upper clamping assembly, a vertical moving mechanism, a horizontal moving mechanism and a detection assembly. The base (1) is provided with a worktable (2). The lower clamping assembly, the workpiece column (3) and the horizontal moving mechanism are all mounted on the upper surface of the worktable (2). The upper clamping assembly is slidably connected to the workpiece column (3), and the upper clamping assembly reciprocates up and down along the height direction of the workpiece column (3). The lower end of the measuring column (4) is connected to the horizontal moving mechanism, and the vertical moving mechanism is slidably connected to the measuring column (4). The detection assembly is mounted on the vertical moving mechanism, and the detection assembly reciprocates up and down along the height direction of the measuring column (4) via the vertical moving mechanism.

2. The device for measuring the gear alignment accuracy of a heavy truck countershaft assembly according to claim 1 is characterized in that: The lower clamping assembly comprises a driving spindle (5) and a lower center (6); the driving spindle (5) is mounted on one side of the upper surface of the workbench (2); the lower end of the lower center (6) is fixedly connected to the upper end of the driving spindle (5).

3. The device for measuring the gear alignment accuracy of a heavy truck countershaft assembly according to claim 1 is characterized in that: The upper clamping assembly comprises an upper center (7), a first motor, a first guide rail (8), a first lead screw (9) and a first slider (10). The two first guide rails (8) are arranged vertically and parallelly on the inner side of the workpiece column (3). The first lead screw (9) is installed between the two guide rails (10). Both ends of the first lead screw (9) are fixed to the workpiece column (3) through fixing members. The first motor is installed in the workpiece column (3). The output shaft of the first motor is fixedly connected to the end of the first lead screw (9). A nut is mounted on the first lead screw (9). The first slider (10) is fixedly installed with the nut. The first slider (10) is slidably connected to the two guide rails (10). The upper end of the upper center (7) is connected to the first slider (10).

4. The device for measuring the gear alignment accuracy of a heavy truck countershaft assembly according to claim 1 is characterized in that: The horizontal movement mechanism comprises a second motor, a second guide rail (11), a second lead screw (12) and a second slider (13); the two second guide rails (11) are arranged in parallel on the upper surface of the workbench (2) and are located on the right side of the driving spindle (5); the second lead screw (12) is installed between the two second guide rails (11); the second motor is installed on the right side of the workbench (2); the output shaft of the second motor is fixedly connected to one end of the second lead screw (12); a nut is mounted on the second lead screw (12); the second slider (13) is fixedly installed with the nut; the second slider (13) is slidably connected to the two second guide rails (11); and the lower end of the measuring column (4) is installed on the upper surface of the second slider (13).

5. The device for measuring the gear alignment accuracy of a heavy truck countershaft assembly according to claim 1 is characterized in that: The vertical movement mechanism comprises a third motor, a third guide rail (14), a third lead screw (15) and a third slider (16); the two third guide rails (14) are arranged in parallel and vertically on the inner side of the measuring column (4); the third lead screw (15) is installed between the two third guide rails (14); both ends of the third guide rail (14) are fixed to the measuring column (4) through fixing members; the third motor is installed on the upper part of the measuring column (4); the output shaft of the third motor is fixedly connected to the upper end of the third lead screw (15); a nut is mounted on the third lead screw (15); the third slider (16) is fixedly installed with the nut; the third slider (16) is slidably connected to the two third guide rails (14); and the detection assembly is installed on the third slider (16).

6. The device for measuring the gear alignment accuracy of a heavy truck countershaft assembly according to claim 1 is characterized in that: The detection assembly comprises a pin hole identification sensor (17) and a three-dimensional probe (18). The three-dimensional probe (18) is mounted on a vertical moving mechanism, and the pin hole identification sensor (17) is located on the upper part of the three-dimensional probe (18).

7. The device for measuring the gear alignment accuracy of a heavy truck countershaft assembly according to claim 1 is characterized by: The device for measuring the gear alignment accuracy of a heavy truck countershaft assembly further comprises a display (19), and the display (19) is mounted on the upper surface of the base via a bracket.

Images