Flatness and perpendicularity automatic detection platform
By designing an automatic detection platform, using components such as rotary table, linear slide module table and displacement sensor, the rapid and accurate detection of workpiece plane and verticality is achieved, and the problem of low detection efficiency of existing equipment is solved.
Patent Information
- Application Number
- CN202421946170.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-13
AI Technical Summary
Existing testing equipment can only detect the plane or perpendicularity of the measured surface of the workpiece, and manual inspection is time-consuming and labor-intensive and inefficient.
An automatic detection platform for plane degree and perpendicularity is designed, using a rotary table with a motor, a linear slide module table, a displacement sensor and a down-pressure rotating cylinder assembly to realize automatic detection of the plane degree and perpendicularity of the measured surface of the workpiece.
It realizes that the planarity and verticality of the workpiece can be detected quickly and accurately with only one detection device, improving the detection efficiency and accuracy.
Smart Images
Figure CN222938453U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a detection device, in particular to an automatic flatness and perpendicularity detection platform. Background Art
[0002] After workpieces are mass-produced in a factory, it is necessary to detect the flatness and perpendicularity of the measured surfaces of the workpieces to ensure that the workpieces meet the specifications. Existing detection devices can only detect the flatness or perpendicularity of the measured surfaces of workpieces singly. Or after the measured workpiece is clamped by a special fixture manually, the flatness and perpendicularity of the measured surface of the measured workpiece are detected by a three-coordinate method, which is time-consuming and laborious and has low efficiency. Content of the Utility Model
[0003] Aiming at the deficiencies existing in the prior art, the utility model provides an automatic flatness and perpendicularity detection platform. This detection platform only uses one detection device to detect the flatness and perpendicularity of the measured surface of a workpiece, has a simple structure, a fast detection speed and a high detection accuracy rate.
[0004] The technical solution for achieving the purpose of the utility model is as follows:
[0005] The automatic flatness and perpendicularity detection platform includes a base plate with a support seat. A rotary table with a motor is arranged on the base plate, and a detection table is erected on the rotary table. A plurality of groups of linear slide rail module tables with the same specifications are arranged on the rotary table at intervals. A displacement sensor is arranged on each group of linear slide rail module tables. A downward pressing rotary cylinder assembly and a flatness standard plate are arranged on the detection table. A cylinder bracket is further arranged on the rotary table. A cylinder with a vertical output shaft facing upward is arranged at the end of the cylinder bracket. A connecting sleeve is arranged on the output shaft of the cylinder. A centering shaft is arranged on the connecting sleeve. A lower wedge block, a moving tensioning core shaft and an upper wedge block are successively arranged on the periphery of the upper end of the centering shaft from bottom to top. A positioning spring is further arranged at the top of the centering shaft. The centering shaft passes through a through hole arranged on the detection table. The central hole of the flatness standard plate is sleeved outside the lower wedge block of the centering shaft. Among them, the rotary table, the linear slide rail module tables, the displacement sensors, the downward pressing rotary cylinder assembly and the cylinders are all externally connected to a controller.
[0006] One group of linear slide rail module tables includes a stepping motor with a bracket. The bracket includes a first cross plate horizontally arranged on the rotary table, a first vertical plate and a second vertical plate perpendicular to both ends of the first cross plate. The second vertical plate is close to the axis of the rotary table. A slider that is limited and slides between the first vertical plate and the second vertical plate is arranged on the first cross plate of the bracket. The output shaft of the stepping motor passes through the first vertical plate of the bracket and is connected to the slider. A displacement bracket in a Z shape is arranged on the slider. The end of the displacement bracket faces the axis of the rotary table. A displacement sensor is arranged at the end of the displacement bracket. The stepping motor is connected to the controller.
[0007] The displacement sensors on each group of linear slide rail module tables are equidistantly distributed centered on the centering shaft.
[0008] The pressing and rotating cylinder assembly includes a rotating cylinder with an output shaft facing upward. A movable rod that is rotatable and perpendicular to the output shaft of the rotating cylinder is provided on the output shaft of the rotating cylinder. A positioning cylinder with an output shaft facing downward is provided at the end of the movable rod. Both the rotating cylinder and the positioning cylinder are connected to the controller.
[0009] The outer diameter of the flatness standard plate is larger than the diameter of the through hole provided on the inspection table.
[0010] Perforations for passing through the displacement sensor and the cylinder cable are provided on the base plate.
[0011] The axes of the perforations, the through hole of the inspection table, and the centering shaft are all on the same vertical line.
[0012] Working principle:
[0013] Before performing perpendicularity and flatness detection, first place a detachable flatness standard inspection plate on the flatness standard plate. Then the controller controls the displacement sensor below the flatness standard plate to rise synchronously. When the contact of the displacement sensor touches the flatness standard inspection plate, the reading of the displacement sensor is reset to zero. The controller controls the displacement sensor to return to the initial position, and then the flatness standard inspection plate is taken out.
[0014] (1) Perpendicularity detection:
[0015] The workpiece to be measured is sleeved on the positioning spring at the upper end of the centering shaft to achieve axial positioning. The controller controls the cylinder to pull down the centering shaft to make the movable tensioning mandrel tighten the workpiece to be measured. Then the controller controls multiple displacement sensors below the workpiece to be measured to rise synchronously until the contacts of the displacement sensors all touch the measured surface of the workpiece to be measured. The controller controls the displacement sensors to stop rising. At this time, the controller collects the rising displacement data of the displacement sensors. If it is necessary to collect the displacement data of multiple groups of displacement sensors, the rotary table rotates around the central axis of the workpiece to be measured, and the displacement difference data of different position points on the measured surface of the workpiece to be measured are collected by rotating a certain angle. The collected displacement data is transmitted to the controller. Taking the center line of the workpiece to be measured as the baseline, the controller calculates the displacement differences of several points, and further calculates the perpendicularity of the workpiece to be measured;
[0016] In addition, the displacement sensors are installed on the rotary table through the linear slide rail module platform, and the radial distribution of the displacement sensors can be adjusted by adjusting the slider on the linear slide rail module platform to adapt to workpieces to be measured with different sizes;
[0017] (2)Flatness detection: The workpiece to be measured is axially positioned by being sleeved on the positioning spring at the upper end of the centering shaft. The rotating cylinder rotates the positioning cylinder above the workpiece to be measured so that the output shaft of the positioning cylinder is coaxial with the axis of the workpiece to be measured. Then, the controller controls the positioning cylinder above the workpiece to be measured to act. The output shaft of the positioning cylinder pushes the workpiece to be measured to overcome the axial positioning spring force, so as to push the workpiece to be measured to make the measured surface of the workpiece contact with the flatness standard plate. The output shaft of the positioning cylinder presses the workpiece to be measured and the flatness standard plate tightly. Then, the controller controls the displacement sensors below the workpiece to be measured to rise synchronously until the contact head of each displacement sensor touches the measured surface of the workpiece to be measured. Then, the displacement sensors collect the displacement data at each measuring point on the measured surface of the workpiece to be measured, and transmit the collected displacement data to the controller. The controller calculates the displacement differences at several points and further calculates the flatness of the workpiece to be measured.
[0018] If both the perpendicularity and flatness of the workpiece to be measured are within the specified ranges, then the workpiece to be measured is a qualified product.
[0019] This kind of detection platform only uses one detection device to detect the flatness and perpendicularity of the measured surface of the workpiece, with a simple structure, fast detection speed and high detection accuracy. Description of the Drawings
[0020] Figure 1 Structural diagram of the embodiment;
[0021] Figure 2 For Figure 1 Top view;
[0022] Figure 3 For Figure 2 Sectional view taken along line A-A in
[0023] Figure 4 For Figure 3 Enlarged schematic view at position B in
[0024] Figure 5 For Figure 1 Structural diagram of removing the detection table and the downward pressing and rotating cylinder assembly in
[0025] Figure 6 For Figure 5 Top view, and the arrow in the figure indicates the sliding direction of the slider and the displacement sensor.
[0026] In the figure, 1. base plate; 2. support seat; 3. rotary table; 31. motor; 4. inspection table; 5. linear slide rail module table; 51. stepper motor; 52. bracket; 521. first horizontal plate; 522. first vertical plate; 523. second vertical plate; 53. slider; 54. displacement bracket; 6. displacement sensor; 7. pressing and rotating cylinder assembly; 71. rotating cylinder; 72. movable rod; 73. positioning cylinder; 8. flatness standard plate; 9. cylinder bracket; 10. cylinder; 11. connecting sleeve; 12. centering shaft; 13. lower wedge block; 14. moving tensioning mandrel; 15. upper wedge block; 16. workpiece to be measured; 17. positioning spring. Detailed implementation mode
[0027] The content of the present utility model will be further described below in conjunction with the drawings and embodiments, but it is not a limitation to the present utility model. Embodiment
[0028] Refer to Figures 1-6 , an automatic flatness and perpendicularity detection platform, including a base plate 1 with a support seat 2, a rotary table 3 with a motor 31 is provided on the base plate 1, and an inspection table 4 is erected on the rotary table 3. Four groups of linear slide rail module tables 5 with the same specifications are arranged at intervals on the rotary table 3. A displacement sensor 6 is provided on each group of linear slide rail module tables 5. A pressing and rotating cylinder assembly 7 and a flatness standard plate 8 are provided on the inspection table 4. A cylinder bracket 9 is also provided on the rotary table 3. A cylinder 10 with a vertical output shaft facing upward is provided at the end of the cylinder bracket 9. A connecting sleeve 11 is provided on the output shaft of the cylinder 10. A centering shaft 12 is provided on the connecting sleeve 11. A lower wedge block 13, a moving tensioning mandrel 14 and an upper wedge block 15 are successively arranged from bottom to top on the outer periphery of the upper end of the centering shaft 12. A positioning spring 17 is also provided at the top of the centering shaft 12. The centering shaft 12 passes through a through hole provided on the inspection table 4. The central hole of the flatness standard plate 8 is sleeved outside the lower wedge block 13 of the centering shaft 12. Among them, the rotary table 3, the linear slide rail module table 5, the displacement sensor 6, the pressing and rotating cylinder assembly 7 and the cylinder 10 are all externally connected to a controller.
[0029] One group of linear slide rail module tables 5 includes a stepper motor 51 with a bracket 52. The bracket 52 includes a first horizontal plate 521 horizontally arranged on the rotary table 3 and a first vertical plate 522 and a second vertical plate 523 perpendicular to both ends of the first horizontal plate 521. The second vertical plate 523 is close to the axis of the rotary table 3. A slider 53 that is limited and slides between the first vertical plate 522 and the second vertical plate 523 is provided on the first horizontal plate 521 of the bracket 52. The output shaft of the stepper motor 51 passes through the first vertical plate 522 of the bracket 52 and is connected to the slider 53. A Z-shaped displacement bracket 54 is provided on the slider 53. The end of the displacement bracket 54 faces the axis of the rotary table 3. A displacement sensor 6 is provided at the end of the displacement bracket 54. The stepper motor 51 is connected to the controller.
[0030] The displacement sensors 6 on each linear slide rail module table 5 are equidistantly distributed around the centering shaft 12.
[0031] The downward pressing and rotating cylinder assembly 7 includes a rotating cylinder 71 with an upward output shaft. A movable rod 72 that is rotatable and perpendicular to the output shaft of the rotating cylinder 71 is provided on the output shaft of the rotating cylinder 71. A positioning cylinder 73 with a downward output shaft is provided at the end of the movable rod 72. Both the rotating cylinder 71 and the positioning cylinder 73 are connected to the controller.
[0032] The outer diameter of the flatness standard plate 8 is larger than the diameter of the through hole provided on the inspection table 4.
[0033] Perforations for passing the cables of the displacement sensors 6 and the cylinders 10 are provided on the base plate 1.
[0034] The axes of the perforations, the through hole of the inspection table 4, and the centering shaft 12 are all on the same vertical line.
[0035] In this example, a flange is provided at the upper end of the centering shaft 12 to engage the upper wedge block 15, and a step is provided on the lower wedge block 13 to engage the flatness standard plate 8. When the centering shaft 12 is pulled down by the cylinder 10, the centering shaft 12 drives the upper wedge block 15 to move downward, while the lower wedge block 13 is stuck on the flatness standard plate 8, causing the movable tensioning mandrel 14 to expand outward.
[0036] Working principle:
[0037] Before performing perpendicularity and flatness detection, first place a detachable flatness standard zeroing plate (not shown in the figure) on the flatness standard plate 8. Then the controller controls the displacement sensors 6 below the flatness standard plate 8 to rise synchronously. When the contact heads of the displacement sensors 6 touch the flatness standard zeroing plate, the readings of the displacement sensors 6 are reset to zero. The controller controls the displacement sensors 6 to return to the initial position, and then the flatness standard zeroing plate is taken out.
[0038] (1) Perpendicularity detection:
[0039] The 16 workpieces to be measured are sleeved on the positioning spring 17 at the upper end of the centering shaft 12 to achieve axial positioning. The controller controls the air cylinder 10 to pull down the centering shaft 12, and the moving tensioning mandrel 14 expands outwards to tighten the workpieces 16 to be measured. Then, the controller controls the four displacement sensors 6 below the workpiece 16 to rise synchronously until the contacts of all four displacement sensors 6 touch the measured surface of the workpiece 16 to be measured. The controller controls the displacement sensors 16 to stop rising. At this time, the controller collects the rising displacement data of the four displacement sensors 16. If it is necessary to collect the displacement data of multiple groups of displacement sensors 16, the rotary table 3 is rotated around the central axis of the workpiece 16 to be measured, and the displacement difference data of different position points on the measured surface of the workpiece 16 to be measured are collected by rotating a certain angle. The collected displacement data is transmitted to the controller. Based on the center line of the workpiece 16 to be measured, the displacement differences of several points are calculated by the controller, and further the perpendicularity of the workpiece 16 to be measured is calculated.
[0040] As Figure 6 shown, in addition, the displacement sensors 16 are installed on the rotary table 3 through the linear slide rail module table 5, and the radial distribution of the displacement sensors 6 can be adjusted by adjusting the slider 53 on the linear slide rail module table 5 to adapt to workpieces 16 to be measured with different sizes.
[0041] (2)Flatness detection: The 16 workpieces to be measured are sleeved on the positioning spring 17 at the upper end of the centering shaft 12 to achieve axial positioning. The rotary air cylinder 71 rotates the positioning air cylinder 73 above the workpiece 16 to be measured so that the output shaft of the positioning air cylinder 73 is coaxial with the axis of the workpiece 16 to be measured. Then, the controller controls the positioning air cylinder 73 above the workpiece 16 to be measured to act. The output shaft of the positioning air cylinder 73 pushes the workpiece 16 to be measured to overcome the axial positioning spring force to push the workpiece 16 to be measured so that the measured surface of the workpiece 16 to be measured contacts the flatness standard plate 8. The output shaft of the positioning air cylinder 73 presses the workpiece 16 to be measured and the flatness standard plate tightly. Then, the controller controls the displacement sensors 6 below the workpiece 16 to rise synchronously until the contact of each displacement sensor 6 touches the measured surface of the workpiece 16 to be measured. The controller controls all the displacement sensors 6 to stop rising. Then, the displacement sensors 6 collect the displacement data of each measuring point on the measured surface of the workpiece 16 to be measured and transmit the collected displacement data to the controller. The displacement differences of several points are calculated by the controller, and further the flatness of the workpiece 16 to be measured is calculated.
[0042] If the perpendicularity and flatness of the workpiece 16 to be measured are both within the specified range, then the workpiece 16 to be measured is a qualified product.
[0043] In this example, the rotary table is an off-the-shelf product.
[0044] In this example, the model of the displacement sensor is sensor10P. The displacement sensor is used in combination with the displacement sensor contact, and the model of the displacement sensor contact is OP-77681.
Claims
1. Flatness and verticality automatic detection platform, characterized by: It includes a base plate with a support seat, a turntable with a motor is provided on the base plate, and a detection table mounted on the turntable, a plurality of groups of linear slide module tables with the same specifications are arranged at intervals on the turntable, each group of linear slide module tables is provided with a displacement sensor, a downward pressure rotating cylinder assembly and a flatness standard plate are provided on the detection table, and a cylinder bracket is also provided on the turntable, the end of the cylinder bracket is provided with a vertical cylinder with an output shaft facing upward, the cylinder output shaft is provided with a connecting sleeve, a centering shaft is provided on the connecting sleeve, a lower wedge block, a movable tensioning core shaft and an upper wedge block are provided on the outer periphery of the upper end of the centering shaft in sequence from bottom to top, a positioning spring is also provided on the top of the centering shaft, the centering shaft passes through a through hole set on the detection table, and the center hole of the flatness standard plate is sleeved outside the lower wedge block of the centering shaft, wherein the turntable, the linear slide module table, the displacement sensor, the downward pressure rotating cylinder assembly and the cylinder are all externally connected to a controller.
2. The flatness and verticality automatic detection platform according to claim 1 is characterized in that: The linear slide rail module platform comprises a stepper motor with a bracket, the bracket comprises a first horizontal plate horizontally arranged on the turntable and a first vertical plate and a second vertical plate perpendicular to both ends of the first horizontal plate, the second vertical plate is close to the axis of the turntable, the first horizontal plate of the bracket is provided with a slider for limited sliding between the first vertical plate and the second vertical plate, the output shaft of the stepper motor passes through the first vertical plate of the bracket and is connected to the slider, a Z-shaped displacement bracket is provided on the slider, the end of the displacement bracket faces the axis of the turntable, a displacement sensor is provided on the end of the displacement bracket, and the stepper motor is connected to the controller.
3. The flatness and verticality automatic detection platform according to claim 1 is characterized in that: The displacement sensors on each set of linear slide rail module platforms are equidistantly distributed around the centering axis.
4. The flatness and verticality automatic detection platform according to claim 1 is characterized in that: The downward-pressing rotating cylinder assembly comprises a rotating cylinder with an output shaft facing upwards, a rotatable movable rod perpendicular to the rotating cylinder output shaft is arranged on the rotating cylinder output shaft, a positioning cylinder with an output shaft facing downwards is arranged at the end of the movable rod, and both the rotating cylinder and the positioning cylinder are connected to a controller.
5. The flatness and verticality automatic detection platform according to claim 1 is characterized in that: The outer diameter of the flatness standard plate is larger than the diameter of the through hole provided on the detection platform.
6. The flatness and verticality automatic detection platform according to claim 1 is characterized in that: The base plate is provided with through holes for passing the displacement sensor and the cylinder cable.
7. The flatness and verticality automatic detection platform according to claim 6, characterized in that: The axis lines of the through hole, the through hole of the detection table and the centering shaft are all on a vertical line.