Workpiece measuring mechanism
By designing a workpiece measuring mechanism including a detection pen, a push cylinder, an elastic block and a distance measuring assembly, the problem of measurement error in the prior art is solved and a higher measurement accuracy is achieved.
Patent Information
- Application Number
- CN202421498952.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-06-27
AI Technical Summary
There are errors in the existing workpiece measurement technology, mainly because there is a deviation in the touch position between the measuring pen and the workpiece, and the inconsistency between the touch time point and the signal generation time point.
A workpiece measuring mechanism is designed, including a first detection unit and a tabletop. The first detection unit is composed of a first detection pen, a first push cylinder, a first elastic block and a first distance measuring assembly. The distance between the detection pen and the tabletop is changed by the first push cylinder, and the position of the detection pen is limited by using the first elastic block to ensure that the distance between the detection pen and the tabletop is consistent with the part to be tested of the workpiece.
Through this workpiece measuring mechanism, measurement errors can be effectively reduced, ensuring that the detection pen and the part to be measured of the workpiece can be closely contacted, and measuring accuracy can be improved.
Smart Images
Figure CN222652184U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a workpiece measuring mechanism, and belongs to the technical field of workpiece detection. Background Art
[0002] With the improvement of the country's industrial strength, the precision requirements for products such as automotive parts, hardware, various shafts, sleeves, etc. are getting higher and higher, so the inspection requirements for such products are also putting forward higher requirements and standards. The commonly used inspection method is to move the measuring pen or the workpiece to be measured to form a touch, obtain a position signal, and thus obtain the data required for the workpiece to be measured. However, there will be certain errors when the measuring pen and the workpiece to be measured touch, such as the roughness of the surface of the workpiece to be measured or the attachment of debris, resulting in deviations in the actual touch position. For example, when the time point of the measuring pen touching and the time point of generating the signal are inconsistent, the measured data will also have errors.
[0003] Therefore, in order to solve the above technical problems, it is necessary to provide a workpiece measuring mechanism to overcome the above defects in the prior art. Utility Model Content
[0004] The utility model aims to provide a high-precision workpiece measuring mechanism.
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a workpiece measuring mechanism, including a first detection unit and a table, the first detection unit including a first detection pen, a first pushing cylinder, a first elastic block and a first ranging component, the first detection pen is installed on the first pushing cylinder, the first detection pen is connected to the first elastic block, the first ranging component is arranged on the first elastic block, the distance between the first detection pen and the table is changed by the first pushing cylinder, when the first detection pen and the table abut the workpiece, the first ranging component measures the distance between the first detection pen and the table.
[0006] By adopting the above technical solution, the first pushing cylinder can change the distance between the first detection pen and the table, and the first detection pen is placed at the part of the workpiece to be measured. The first elastic block is elastic and can limit the position of the first detection pen, and the first elastic block can enable the first detection pen and the table to clamp the workpiece to avoid deviation between the distance between the first detection pen and the table and the part to be measured of the workpiece to be measured.
[0007] A workpiece measuring mechanism of the utility model is further configured as follows: a first limit block is installed on the first detection pen, and the first limit block is connected to the output end of the first pushing cylinder.
[0008] By adopting the above technical solution, the first pushing cylinder can change the position of the first limiting block, thereby changing the relative position between the first detection pen and the table top.
[0009] A workpiece measuring mechanism of the utility model is further configured as follows: a first clamping groove is opened in the first limit block, the first clamping groove includes a sliding groove and an abutting groove, a first clamping block is provided at the output end of the first pushing cylinder, the first clamping block extends into the sliding groove, and the cross-section of the first clamping block is larger than the cross-section of the abutting groove.
[0010] By adopting the above technical solution, the sliding groove provides a range of up and down movement for the first pushing cylinder, and the abutment groove limits the maximum movement range of the first clamping block of the first pushing cylinder. The first clamping groove prevents the first detection pen from being abutted by the first pushing cylinder when its position changes due to the deformation of the first elastic block, resulting in the inability to change its position.
[0011] A workpiece measuring mechanism of the utility model is further configured as follows: the first detection unit also includes a second detection pen, a second pushing cylinder, a second elastic block and a second distance measuring component, and the second pushing cylinder, the second elastic block and the second distance measuring component have the same structure as the first pushing cylinder, the first elastic block and the first distance measuring component.
[0012] A workpiece measuring mechanism of the utility model is further configured as follows: a first detection pen includes a first detection head and a first mounting block, the first detection head is mounted on the bottom of the first mounting block, a second detection pen includes a second detection head and a second mounting block, an extension block is integrally formed at the bottom of the second mounting block, the second detection head is mounted on the side wall of the extension block, and the length direction of the first detection head is perpendicular to the length direction of the second detection head.
[0013] By adopting the above technical solution, the first detection head and the second detection head cooperate with each other to detect the data of the protrusion on the side wall of the workpiece.
[0014] A workpiece measuring mechanism of the utility model is further configured such that when the first push cylinder is not in contact with the first slot and the second push cylinder is not in contact with the second slot, the distance between the first detection head and the second detection head is smaller than the thickness of the workpiece at the location to be measured.
[0015] By adopting the above technical solution, the first detection head and the second detection head can clamp the workpiece during use, thereby reducing errors during measurement.
[0016] A workpiece measuring mechanism of the utility model is further configured as follows: the plane where the first detection head and the second detection head are located is perpendicular to the table surface.
[0017] A workpiece measuring mechanism of the utility model is further configured as follows: the first detection unit is height-adjusted by a lifting mechanism.
[0018] By adopting the above technical solution, the horizontal height of the detection unit can be adjusted.
[0019] A workpiece measuring mechanism of the utility model is further configured to include: a second detection unit, the structure of the second detection unit is consistent with the structure of the first detection unit, the table is located between the first detection unit and the second detection unit, and a through groove is opened on the table to facilitate the up and down movement of the first detection unit and the second detection unit.
[0020] By adopting the above technical solution, the first detection unit and the second detection unit can measure the value of the workpiece at the same time.
[0021] A workpiece measuring mechanism of the utility model is further configured as follows: the first distance measuring component and the second distance measuring component can transmit measurement data through a data port.
[0022] Compared with the prior art, the utility model has the following beneficial effects:
[0023] 1. The first push cylinder and the second push cylinder in the utility model can change the distance between the first detection pen and the second detection pen, so as to place the first detection pen and the second detection pen at the position to be measured of the workpiece.
[0024] 2. The first elastic block in the utility model is elastic and can limit the position of the first detection pen.
[0025] 3. The first card slot in the utility model provides a range for the first push cylinder to move up and down, thereby preventing the first detection pen and the second detection pen from being abutted by the first push cylinder when their positions change, resulting in the inability to change their positions.
[0026] 4. The distance between the first detection head and the second detection head in the utility model is smaller than the thickness of the object to be measured, so that the first detection head and the second detection head can be closely attached to the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 This is a structural schematic diagram of a workpiece measuring mechanism of a preferred embodiment of the utility model;
[0028] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;
[0029] Figure 3 This is a cross-sectional view of the working state of the workpiece measuring mechanism of the preferred embodiment of the utility model;
[0030] Figure 4 for Figure 3 The enlarged schematic diagram of point B in the middle:
[0031] Figure 5 for Figure 1 A schematic diagram of the structure of the first elastic block;
[0032] Figure 6This is a schematic diagram of the workpiece structure in a preferred embodiment of the utility model. DETAILED DESCRIPTION
[0033] Please refer to the instruction manual Figure 1 To Attachment Figure 5 As shown, the utility model is a workpiece measuring mechanism, and this embodiment is used to measure a workpiece 1'. The workpiece 1' is as shown in FIG. Figure 6 As shown, the workpiece 1' consists of a cylinder and two circular rings, and the two circular rings are located on the inner wall of the cylinder.
[0034] The workpiece measuring mechanism includes a first detection unit 1, a second detection unit 2 and a table 3. As a preferred embodiment, the first detection unit 1 and the second detection unit 2 are respectively located on the upper and lower sides of the table 3. The first detection unit 1 is height-adjusted by a lifting mechanism 9. The lifting mechanism 9 can adjust the horizontal height of the first detection unit 1 so that the first detection unit 1 can be aligned with one of the rings of the workpiece 1' to be measured. A through groove 4 is provided on the table 3 to facilitate the up and down movement of the second detection unit 2. The through groove 4 provides a range for the second detection unit 2 to move, so that the first detection unit 1 and the second detection unit 2 can simultaneously measure the values of the two rings in the workpiece 1'.
[0035] The first detection unit 1 includes a first detection pen 10, a second detection pen 20, a first push cylinder 5, a second push cylinder 51, a first distance measuring assembly 6 and a second distance measuring assembly 61. The first push cylinder 5 is installed on the first distance measuring assembly 6, and the second push cylinder 51 is installed on the second distance measuring assembly 61. The first detection pen 10 and the second detection pen 20 are installed on the first push cylinder 5 and the second push cylinder 51 respectively. The first push cylinder 5 and the second push cylinder 51 can change the distance between the first detection pen 10 and the second detection pen 20, so as to clamp the first detection pen 10 and the second detection pen 20 at the ring of the workpiece 1'. The first detection pen 10 is installed with a first limit block 8, and the first limit block 8 is connected to the first push cylinder 5. The second detection pen 20 has a second limit block 81, and the second push cylinder 51 is connected to the second limit block 81. A first card slot 811 is provided in the first limit block 8, and a first card block 511 is provided at the output end of the first push cylinder 5 facing the first card slot 811. The first card block 511 extends into the first card slot 811, and the first card slot 811 provides a range of up and down movement for the push cylinder 5. Specifically, the first card slot 811 is composed of a sliding slot 812 and an abutting slot 813, and the first card block 511 extends into the sliding slot 812. The cross section of the first card block 511 is larger than the cross section of the abutting slot 813, and the sliding slot 812 provides a range of up and down movement for the first push cylinder 5. The abutting slot 813 limits the maximum movement range of the first card block 511 of the first push cylinder 5. The first card slot 811 can prevent the first detection pen 10 from being abutted by the first push cylinder 5 when the position changes due to the deformation of the first elastic block 7, resulting in the inability to change its position.
[0036] The first detection unit 1 also includes a second detection pen 20, and the second detection pen 20 is installed on the second distance measuring component 61 through a second elastic block 71. The first elastic block 7 has the same structure as the second elastic block 71. The first distance measuring component 6 and the second distance measuring component 61 obtain the parameters of the workpiece to be measured through the position data read from the first detection pen 10 and the second detection pen 20, and transmit the measured data through the output end, and the data can be traced and queried.
[0037] The first detection pen 10 includes a first detection head 101 and a first mounting block 102. The first detection head 101 is installed at the bottom of the first mounting block 102. The second detection pen 20 includes a second detection head 201 and a second mounting block 202. An extension block 203 is integrally formed at the bottom of the second mounting block 202. The second detection head 201 is installed on the side wall of the extension block 203. The length direction of the first detection head 101 is perpendicular to the length direction of the second detection head 201. The plane where the first detection head 101 and the second detection head 201 are located is perpendicular to the table 3. When the first pushing cylinder 5 is not in contact with the first limit block 8, the distance between the first detection head 101 and the second detection head 201 is slightly smaller than the thickness of the circular ring to be measured, so that the first detection head 101 and the second detection head 201 can be close to the workpiece.
[0038] Specifically, the first detection pen 10 is installed on the distance measuring component 6 through the first elastic block 7, and the second detection pen 20 is installed on the distance measuring component 6 through the second elastic block. The first elastic block 7 has the same structure as the second elastic block. The first distance measuring component 6 and the second distance measuring component 61 are arranged on the first elastic block 7 and the second elastic block 71. When the first detection pen 10 and the second detection pen 20 clamp the workpiece, the first distance measuring component 6 and the second distance measuring component 61 measure the distance between the first detection pen 10 and the second detection pen 20. As a preferred embodiment, the first elastic block 7 can be as follows: Figure 5As shown, it includes a swinging part 71 and a fixed part 72, and the fixed part 72 and the swinging part 71 are separated by a gap. The gap connects the swinging part 71 and the fixed part 72 through a thin wall 73. The gap beside the thin wall 73 is an arc-shaped groove, and the top arc of the arc-shaped groove is close to the thin wall 73. The elastic block is made of metal, so the existence of the thin wall 73 and the arc-shaped groove enables the swinging part 71 to form a function similar to the performance of a spring relative to the fixed part 72. At this time, the swinging part 71 can achieve reciprocating motion without the help of other contacts, and there is no need to consider factors such as resistance and friction between the remaining parts of the swinging part 71. The fixed part 72 and the swinging part 71 are connected by a connecting part, and the two ends of the connecting part are respectively connected to the fixed part 72 or the swinging part 71 through a thin wall 73. The gap between the fixed part 72 and the swinging part 71 is a U-shaped structure, which can prevent the swing amplitude of the fixed part 72 and the swinging part 71 from being too large, resulting in the breakage of the thin wall 73. In actual operation, the fixing portion 72 is fixed on a plate in the mechanism, and the first limit block 8 is installed on the swinging portion 71. When the first push cylinder 5 is started, the first clamping block 511 drives the swinging portion 71 of the first elastic block 7 to deform through the abutting groove 813. At this time, the first detection head 101 is displaced, and the distance between the first detection head 101 and the second detection head 201 is enlarged, so that the position to be measured of the workpiece 1' is clamped in place. Figure 4 As shown. Then the power of the first push cylinder 5 is removed, and the first detection head 101 and the second detection head 201 tightly clamp the measured part of the workpiece 1' to obtain stable and reliable detection data. Similarly, through the cooperation of the second push cylinder 51, the second limit block 81, and the second elastic block 71, the second detection head 201 can be displaced in the same direction or opposite direction as the first detection head 101. The deformation direction of the first push cylinder 5 and the second push cylinder 51 driving the respective elastic blocks can be determined according to the shape or structure of the actual detection part.
[0039] The first elastic block 7 may also be Figure 5 Any other elastic device other than the above can be used as long as it can produce deformation and drive the first detection head 101 and the second detection head 201 to produce an appropriate amount of displacement. The setting of this structure can avoid the problem of deviation between the distance between the first detection pen 10 and the second detection pen 20 and the measured part of the workpiece due to debris on the workpiece or inaccurate positioning. When the first detection pen 10 and the second detection pen 20 clamp the workpiece, the first distance measuring component 6 and the second distance measuring component 61 measure the distance between the first detection pen 10 and the second detection pen 20, so as to obtain the data of a circular ring in the workpiece 1' through the first distance measuring component 6 and the second distance measuring component 61.
[0040] In this embodiment, the structure of the second detection unit 2 is consistent with the structure of the first detection unit 1, including the second detection unit 2 including the third detection pen 100, the fourth detection pen 200, the third push cylinder 50, the fourth push cylinder 510, the third distance measuring component 60 and the fourth distance measuring component 610. The third push cylinder 50 and the fourth push cylinder 510 change the position between the third detection pen 100 and the fourth detection pen 200, so that the third detection pen 100 and the fourth detection pen 200 clamp another circular ring in the workpiece 1', and the data of the other circular ring is measured by the third distance measuring component 60 and the fourth distance measuring component 610. At the same time, the external height h1 of the workpiece 1' is obtained by the data of the first distance measuring component 6 and the third distance measuring component 60, and the internal height h2 of the workpiece 1' is obtained by the data of the second distance measuring component 61 and the fourth distance measuring component 610.
[0041] The working principle of a workpiece measuring mechanism of the utility model is as follows:
[0042] First, the workpiece to be measured is placed on the table 3, and the lifting mechanism 9 is adjusted to move the first detection head 101 and the second detection head 201 to one side of the ring of the workpiece 1', and the third detection pen 100 and the fourth detection pen 200 are moved to one side of the other ring of the workpiece 1' to be measured, and the first push cylinder 5 and the second push cylinder 51 are started to expand the distance between the first detection head 101 and the second detection head 201, and the third push cylinder 50 and the fourth push cylinder 510 are started to expand the distance between the third detection pen 100 and the fourth detection pen 200, and the table 3 is moved horizontally or the first detection unit 1 is moved horizontally to make the first detection head 101 and the second detection head 201 close to each other. The detection head 201 is located at the upper and lower sides of the circular ring of the workpiece 1', and the third detection pen 100 and the fourth detection pen 200 are located at the upper and lower sides of another circular ring of the workpiece 1'. The power of the first push cylinder 5, the second push cylinder 51, the third push cylinder 50 and the fourth push cylinder 510 is removed, so that the second detection head 201, the first detection head 101, the third detection pen 100 and the fourth detection pen 200 clamp the circular ring of the workpiece to be measured, and the thickness value of the circular ring of the workpiece 1' is obtained through the data of the first distance measuring component 6 and the second distance measuring component 61, and the thickness value of another circular ring of the workpiece 1' is obtained through the data of the third distance measuring component 60 and the fourth distance measuring component 610. The external height h1 of the workpiece 1' is obtained through the data of the first distance measuring component 6 and the third distance measuring component 60, and the internal height h2 of the workpiece 1' is obtained through the data of the second distance measuring component 61 and the fourth distance measuring component 610.
[0043] The above specific implementation methods are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A workpiece measuring mechanism, characterized in that: It includes a first detection unit and a table, the first detection unit includes a first detection pen, a first pushing cylinder, a first elastic block and a first distance measuring component, the first detection pen is installed on the first pushing cylinder, the first detection pen is connected to the first elastic block, the first distance measuring component is arranged on the first elastic block, the distance between the first detection pen and the table is changed by the first pushing cylinder, when the first detection pen and the table abut against the workpiece, the first distance measuring component measures the distance between the first detection pen and the table.
2. A workpiece measuring mechanism according to claim 1, characterized in that: A first limiting block is installed on the first detection pen, and the first limiting block is connected to the output end of the first pushing cylinder.
3. A workpiece measuring mechanism according to claim 2, characterized in that: A first clamping slot is provided in the first limiting block, and the first clamping slot includes a sliding slot and an abutting slot. A first clamping block is provided at the output end of the first pushing cylinder, and the first clamping block extends into the sliding slot, and the cross section of the first clamping block is larger than the cross section of the abutting slot.
4. A workpiece measuring mechanism according to claim 3, characterized in that: The first detection unit also includes a second detection pen, a second push cylinder, a second elastic block and a second distance measuring component. The second push cylinder, the second elastic block and the second distance measuring component have the same structure as the first push cylinder, the first elastic block and the first distance measuring component.
5. A workpiece measuring mechanism according to claim 4, characterized in that: The first detection pen includes a first detection head and a first mounting block, and the first detection head is installed at the bottom of the first mounting block. The second detection pen includes a second detection head and a second mounting block. An extension block is integrally formed at the bottom of the second mounting block, and the second detection head is installed on the side wall of the extension block. The length direction of the first detection head is perpendicular to the length direction of the second detection head.
6. A workpiece measuring mechanism according to claim 4, characterized in that: When the first pushing cylinder is not in contact with the first clamping groove and the second pushing cylinder is not in contact with the second clamping groove, the distance between the first detection head and the second detection head is smaller than the thickness of the workpiece at the position to be measured.
7. A workpiece measuring mechanism according to claim 1, characterized in that: The plane where the first detection head and the second detection head are located is perpendicular to the table surface.
8. A workpiece measuring mechanism according to claim 1, characterized in that: The first detection unit is height-adjusted by a lifting mechanism.
9. A workpiece measuring mechanism according to claim 1, characterized in that: It also includes a second detection unit, the structure of the second detection unit is consistent with the structure of the first detection unit, the table is located between the first detection unit and the second detection unit, and a through groove is opened on the table to facilitate the up and down movement of the first detection unit and the second detection unit.
10. A workpiece measuring mechanism according to claim 1, characterized in that: The first distance measuring component and the second distance measuring component can transmit measurement data through the data port.