Deformation detection clamp based on multi-mark-point coordinate measurement

Abstract

The utility model discloses a deformation detection fixture based on multi-mark point coordinate measurement, which comprises a telescopic positioning fixture, a plurality of mark points, a fixture base, a track, a track base, a measuring probe and a data acquisition and processing system, the track is arranged on the track base, the bottom of the fixture base is in sliding connection with the track, and the measuring probe is arranged on the track base. The fixture base is used for supporting the whole detection fixture, the positioning fixture is installed on the fixture base and used for clamping a workpiece to be detected and limiting six degrees of freedom of the workpiece, and the marking points are distributed on the surface of the workpiece and / or the fixture base and serve as reference bases of coordinate measurement. The measuring probe is used for collecting coordinate data of a mark point in a contact or non-contact mode, the data collecting and processing system is used for receiving measured data and calculating the deformation amount of the workpiece, and the measuring precision and efficiency can be improved through the arrangement of the adjustable clamp and the deformation amount of intelligent data processing.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical measurement technology, specifically relating to a deformation detection fixture based on multi-marker point coordinate measurement. Background Technology

[0002] In the field of mechanical manufacturing and precision machining, the detection of workpiece deformation is a core aspect of quality control.

[0003] Traditional inspection fixtures often employ mechanical limiting or single reference point measurement methods, which have the following problems: 1. Insufficient degree of freedom restriction: Existing fixtures cannot fully restrict the six degrees of freedom of the workpiece (translation X / Y / Z, rotation Rx / Ry / Rz), leading to slight displacement of the workpiece during measurement and affecting accuracy. 2. Limited marker points: Relying on only a few marker points or contact measuring probes cannot fully capture the complex deformation of the workpiece, especially with curved or irregularly shaped workpieces, resulting in significant errors. 3. Poor adaptability: Traditional fixtures have fixed structures, making it difficult to adapt to workpieces of different sizes or shapes, requiring frequent fixture changes and resulting in low efficiency. 4. Lagging data processing: Existing systems mostly rely on manual data collection, lacking real-time processing capabilities and failing to meet the needs of automated production.

[0004] To address the aforementioned problems, this invention proposes a deformation detection scheme that integrates multiple marker points, adjustable fixtures, and intelligent data processing, aiming to improve measurement accuracy and efficiency. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a deformation detection fixture based on multi-marker coordinate measurement, which can improve measurement accuracy and efficiency by setting an adjustable fixture and intelligent data processing of deformation.

[0006] To achieve the above technical objectives, the technical solution adopted by this utility model is as follows:

[0007] A deformation detection fixture based on multi-marker coordinate measurement includes a retractable positioning fixture, multiple marker points, a fixture base, a track, a track base, a measuring probe, and a data acquisition and processing system. The track is mounted on the track base, and the bottom of the fixture base is slidably connected to the track. The fixture base supports the entire detection fixture. The positioning fixture is mounted on the fixture base and is used to clamp the workpiece to be measured and restrict its six degrees of freedom. The marker points are distributed on the workpiece surface and / or the fixture base as reference benchmarks for coordinate measurement. The measuring probe is used to collect the coordinate data of the marker points through contact or non-contact methods. The data acquisition and processing system is used to receive the measurement data and calculate the workpiece deformation.

[0008] Further defined, the positioning fixture includes a telescopic arm and a clamping part. The telescopic arm is mounted on the fixture base. The clamping part is connected to the telescopic arm through an adjusting bolt provided inside the telescopic arm. The surface of the clamping part is provided with anti-slip texture, and the clamping force can be steplessly adjusted by adjusting the bolt.

[0009] Further specifying, the markers are made of reflective or magnetic material, and at least three sets of markers are provided.

[0010] Furthermore, the bottom of the clamp base is equipped with a shock-absorbing pad, which is connected to the track base by bolts. This structural design ensures its stability.

[0011] Further, it also includes a handle, which is fixed to the side wall of the fixture base and is used to manually adjust the position of the positioning fixture.

[0012] Furthermore, the data acquisition and processing system integrates an error compensation algorithm. This structural design enables automatic correction of measurement results based on ambient temperature and humidity.

[0013] Furthermore, the measuring probe is either a laser probe or a contact probe, and its movement path is controlled by a preset program in the data acquisition and processing system. This structural design enables fully automated measurement.

[0014] The beneficial effects of this utility model are:

[0015] High-precision measurement: Through multi-marker collaborative positioning and combined with error compensation algorithm, the measurement accuracy can reach ±0.01mm.

[0016] High adaptability: The retractable positioning fixture and modular track design support the rapid clamping of workpieces of different sizes.

[0017] High efficiency and stability: The shock-absorbing base effectively suppresses vibration interference, ensuring stability during the measurement process.

[0018] Intelligent: The data system processes data in real time and generates deformation reports, reducing manual intervention. Attached Figure Description

[0019] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0020] Figure 1 This is a top view of an embodiment of the deformation detection fixture based on multi-marker coordinate measurement of this utility model;

[0021] Figure 2 This is a front view of an embodiment of the deformation detection fixture based on multi-marker coordinate measurement of this utility model.

[0022] The symbols of the main components are explained as follows: 1. Positioning clamp; 2. Marker point; 3. Clamp base; 4. Rail; 5. Rail base; 6. Telescopic arm; 7. Clamping part; 8. Detailed Implementation

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1As shown, the deformation detection fixture based on multi-marker coordinate measurement of this utility model includes a telescopic positioning fixture 1, multiple marker points 2, a fixture base 3, a track 4, a track base 6, a measuring probe, and a data acquisition and processing system. The track 4 is set on the track base 6, and the bottom of the fixture base 3 is slidably connected to the track 4. The fixture base 3 is used to support the entire detection fixture. The positioning fixture 1 is installed on the fixture base 3 and is used to clamp the workpiece to be measured and restrict its six degrees of freedom. The marker points 2 are distributed on the surface of the workpiece and / or the fixture base 3 as reference benchmarks for coordinate measurement. The measuring probe is used to collect the coordinate data of the marker points 2 by contact or non-contact. The data acquisition and processing system is used to receive the measurement data and calculate the workpiece deformation.

[0027] In the practical application of this embodiment, the positioning fixture 1 includes a telescopic arm 7 and a clamping part 8. The telescopic arm 7 is mounted on the fixture base 3. The clamping part 8 is connected to the telescopic arm 7 by an adjusting bolt provided inside the telescopic arm 7. The surface of the clamping part 8 is provided with anti-slip texture, and the clamping force can be steplessly adjusted by adjusting the bolt.

[0028] In the practical application of this embodiment, the marker point 2 is made of reflective or magnetic material, and at least 3 sets of marker points 2 are provided.

[0029] In the practical application of this embodiment, the bottom of the clamp base 3 is provided with a shock-absorbing pad, which is connected to the track base 6 by bolts. This structural design ensures its stability.

[0030] In the practical application of this embodiment, a handle 5 is also included. The handle 5 is fixed to the side wall of the fixture base 3 and is used to manually adjust the position of the positioning fixture 1.

[0031] In the practical application of this embodiment, the data acquisition and processing system integrates an error compensation algorithm. This structural design enables automatic correction of measurement results based on ambient temperature and humidity.

[0032] In the practical application of this embodiment, the measuring probe is a laser probe or a contact probe, and the movement path of the measuring probe is controlled by a preset program of the data acquisition and processing system. This structural design enables fully automatic measurement.

[0033] Example 1: Universal Inspection Fixture

[0034] Place the workpiece on the fixture base 3, adjust the positioning fixture 1 on the track 4, and clamp the workpiece by means of the telescopic arm 7.

[0035] Three sets of reflective markers 2 are pasted on the surface of the workpiece. The measuring probe is started to scan the markers 2 along the preset path. The data system collects the coordinates and calculates the deformation in real time.

[0036] Example 2: Inspection of large workpieces

[0037] Extend the length of the track base 6 and add another set of clamp bases 3; install two sets of positioning clamps 1 at both ends of the workpiece, and fine-tune the position by using handles 5. Use a laser probe for non-contact measurement to avoid secondary deformation caused by contact force.

[0038] Example 3: High Temperature Environment Testing

[0039] High-temperature resistant magnetic markers 2 are used, and the fixture base 3 is wrapped with a heat insulation layer; the data acquisition and processing system uses temperature drift compensation mode to eliminate the influence of thermal expansion on the measurement results.

[0040] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A deformation amount detection jig based on multi-mark coordinate measurement, characterized by: The device comprises a telescopic positioning clamp (1), a plurality of marking points (2), a clamp base (3), a track (4), a track base (6), a measuring probe, and a data acquisition and processing system, the track (4) is arranged on the track base (6), the clamp base (3) is slidably connected with the track (4) at the bottom, the clamp base (3) is used for supporting the whole detection clamp, the positioning clamp (1) is installed on the clamp base (3) and is used for clamping a workpiece to be measured and limiting six degrees of freedom of the workpiece, the marking points (2) are distributed on the surface of the workpiece and / or the clamp base (3) and are used as reference bases for coordinate measurement, the measuring probe is used for acquiring coordinate data of the marking points (2) in a contact or non-contact manner, and the data acquisition and processing system is used for receiving measurement data and calculating a deformation amount of the workpiece.

2. The deformation detection jig based on multi-mark coordinate measurement according to claim 1, characterized by: The positioning clamp (1) comprises a telescopic arm (7) and a clamping part (8), the telescopic arm (7) is installed on the clamp base (3), the clamping part (8) is connected with the telescopic arm (7) through an adjusting bolt arranged in the telescopic arm (7), the surface of the clamping part (8) is provided with an anti-skid pattern, and the clamping force can be steplessly adjusted through the adjusting bolt.

3. The deformation detection jig based on multi-mark coordinate measurement according to claim 1, characterized by: The marking points (2) are made of a reflective material or a magnetic material, and at least three groups of the marking points (2) are arranged.

4. The deformation detection jig based on multi-mark coordinate measurement according to claim 1, characterized by: The clamp base (3) is provided with a damping pad at the bottom, and the damping pad is connected with the track base (6) through a bolt.

5. The deformation detection jig based on multi-mark coordinate measurement according to claim 1, characterized by: A handle (5) is further arranged, the handle (5) is fixed to the side wall of the clamp base (3) and is used for manually adjusting the position of the positioning clamp (1).

6. The deformation detection jig based on multi-mark coordinate measurement according to claim 1, characterized by: The data acquisition and processing system is integrated with an error compensation algorithm.

7. The deformation detection jig based on multi-mark coordinate measurement according to claim 1, characterized by: The measuring probe is a laser probe or a contact probe, and the movement path of the measuring probe is controlled by a program preset by the data acquisition and processing system.

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