Hole wall contour detector

Abstract

The utility model discloses a hole wall contour detector which is used for detecting the hole wall contour of a workpiece. The hole wall contour detector comprises a rotary table, a motion control module and a data acquisition module, the rotary table is used for mounting a workpiece; the data acquisition module comprises a sensor, and the sensor is fixed to the motion control module so as to move along the contour line of the inner hole of the workpiece and drive the workpiece to rotate through the rotary table so as to detect the contour of the inner hole. Compared with the prior art, the hole wall contour detector is fixed on the motion control module through the sensor so as to move along the contour line of the inner hole of the workpiece, the workpiece is driven to rotate through the rotary table so as to detect the contour of the inner hole, the detection of the contour of the inner hole and all depth diameters can be realized through one-time clamping, the operation is simple, the measurement process is efficient and rapid, and the detection efficiency is high. And a real contour result can be directly detected, the precision is high, and the result is accurate and reliable.

Description

Technical Field

[0001] The present application relates to the technical field of measuring instruments, and in particular to a hole wall profile detector. Background Art

[0002] Hole diameter and hole profile are important indicators for describing hole shape. Many products with holes have very high requirements for them, especially casting and stamping dies. If the hole diameter and profile are not up to standard, it will directly affect the use of the product.

[0003] The diameter of most holes changes linearly or in an arc as they change depth. Currently, this method is often tested using a three-dimensional coordinate measuring machine (CMM). This method has the following disadvantages: 1) The CMM only measures a subset of points along the contour line, failing to accurately describe the contour. Improving the accuracy of the test results requires increasing the number of points, significantly impacting efficiency. 2) The CMM requires multiple parameter settings and calibrations for different products, making it cumbersome to operate and difficult to handle with product diversity.

[0004] Therefore, there is an urgent need for a high-efficiency and high-precision hole wall profile detection device. Utility Model Content

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a high-efficiency and high-precision hole wall profile detector.

[0006] The technical solutions provided by this utility model are as follows:

[0007] A hole wall contour detector is used to detect the hole wall contour of a workpiece, comprising a turntable, a motion control module, and a data acquisition module; the turntable is used to mount the workpiece; the data acquisition module comprises a sensor, which is fixed to the motion control module so as to be able to move along the inner hole contour line of the workpiece and drive the workpiece to rotate through the turntable to detect the inner hole contour.

[0008] Preferably, the sensor is a pen-type lever grating probe, and during detection, the probe abuts against the workpiece hole wall, so that the data acquisition module obtains the position of the probe abutting against the workpiece hole wall in real time through the X-axis and Z-axis gratings, and obtains parameter data of the workpiece inner hole contour.

[0009] Preferably, the data acquisition module also includes a grating position acquisition mechanism and a grating acquisition card. The grating position acquisition mechanism connects the probe and the grating acquisition card, is used to collect the grating position of the probe on the X-axis and the Z-axis, and transmits the position data to the grating acquisition card. The grating acquisition card is used to store the position data.

[0010] Preferably, the motion control module includes an X-axis motion mechanism, a Z-axis motion mechanism, and a Y-axis motion mechanism, so that the sensor moves to the hole wall of the workpiece so as to be able to move along the contour line of the inner hole of the workpiece.

[0011] Preferably, the X-axis motion mechanism and the Z-axis motion mechanism are both controlled by servo motors.

[0012] Preferably, the Y-axis motion mechanism is a manually operable Y-direction fine-tuning platform.

[0013] Preferably, the X-axis motion mechanism is installed on the Z-axis motion mechanism, the Y-direction fine-tuning platform is installed on the X-axis motion mechanism, and the sensor is installed on the Y-direction fine-tuning platform.

[0014] Preferably, the turntable is an electric turntable, the rotation of which is controlled by a servo motor.

[0015] Preferably, it further comprises a base, and the turntable and the motion control module are mounted on the upper surface of the base.

[0016] Preferably, a plurality of adjustable supporting feet are provided under the base, and an upper surface of the base is also provided with operating buttons for operating the turntable and the motion control module.

[0017] Compared with the existing technology, the hole wall contour detector of the utility model is fixed to the motion control module through the sensor, so that it can move along the inner hole contour line of the workpiece, and drive the workpiece to rotate through the turntable to detect the inner hole contour. The inner hole contour and all depth diameters can be detected in one clamping. The operation is simple, the measurement process is efficient and fast, and the true contour result can be directly detected with high precision, and the result is accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic structural diagram of a hole wall profile detector according to an embodiment of the present utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the probe and workpiece in the hole wall profile detector shown. DETAILED DESCRIPTION

[0021] In order to help those skilled in the art better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0022] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0023] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0025] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0026] like Figure 1 、 Figure 2 As shown, an embodiment of the present invention provides a hole wall profile detector for detecting the hole wall profile of a workpiece 8. The hole wall profile detector includes a turntable 2, a motion control module, a data acquisition module, and a base 1.

[0027] In this embodiment, the turntable 2 is used to mount the workpiece 8. The turntable 2 is an electric turntable, and its rotation is controlled by a servo motor.

[0028] In this embodiment, the data acquisition module includes a grating position acquisition mechanism, a grating acquisition card, and a sensor. The sensor is fixed to the motion control module, allowing it to move along the contour of the workpiece's inner hole and rotate the workpiece 8 via the turntable 2 to detect the inner hole contour. In this embodiment, the sensor is a pencil-type lever grating probe 3. During detection, the probe 3 abuts the workpiece hole wall, allowing the data acquisition module to obtain the position of the probe 3 in real time using the X- and Z-axis gratings, thereby obtaining parameter data of the workpiece inner hole contour.

[0029] The grating position acquisition mechanism connects the probe 3 to the grating acquisition card and is used to acquire the grating position of the probe 3 on the X and Z axes and transmit the position data to the grating acquisition card. In this embodiment, the grating position acquisition mechanism acquires the grating position of the probe 3 on the Z axis indirectly by using the Z-axis feedback grating 7 to detect the position of the Z-axis motion mechanism. The grating acquisition card is used to store the position data.

[0030] In this embodiment, the motion control module includes an X-axis motion mechanism 5, a Z-axis motion mechanism 6, and a Y-axis motion mechanism, which enables the sensor to be moved to the workpiece hole wall so that it can move along the workpiece hole contour. In this embodiment, the X-axis motion mechanism 5 and the Z-axis motion mechanism 6 are both controlled by servo motors, and the Y-axis motion mechanism is a manually operated Y-axis fine-tuning platform 4. Specifically, the X-axis motion mechanism 5 is mounted on the Z-axis motion mechanism 6, the Y-axis fine-tuning platform 4 is mounted on the X-axis motion mechanism 5, and the sensor is mounted on the Y-axis fine-tuning platform 4.

[0031] In this embodiment, the base 1 is a marble base, and the turntable 2 and the motion control module are mounted on the upper surface of the base 1. A plurality of adjustable support feet 9 are provided below the base 1, and operation buttons 10 for operating the turntable 2 and the motion control module are also provided on the upper surface of the base 1.

[0032] During inspection, a worker places the workpiece 8 to be tested on the fixture of turntable 2 (the fixture is switched based on the actual workpiece) and secures it. After workpiece 8 is securely clamped, the model of workpiece 8 is determined and the corresponding formula is selected. The X-axis motion mechanism 5, Z-axis motion mechanism 6, and Y-axis motion mechanism are then used to move the probe 3 until it contacts the workpiece hole wall, allowing it to move along the workpiece's inner hole contour. Turntable 2 then rotates the workpiece 8, causing the probe 3 to move along the X-axis. The position of the probe 3 after movement is captured by the grating position acquisition mechanism. Combined with the Z-axis position of the probe 3 obtained by the Z-axis motion mechanism 6, this position of the probe 3 in contact with the workpiece hole wall is determined in real time, allowing parameter data of the workpiece's inner hole contour to be obtained, enabling detection of the inner hole contour. By collecting sensor readings at different locations, the coordinates of each point on the inner hole contour can be calculated. This allows the calculation of parameters such as the diameter at different depths, the straight line angle at different locations on the contour curve, and the arc radius and radian. The data can be processed through dedicated measurement and control software and displayed and output in the form of images, charts, etc. All data are stored in the database for easy query and analysis.

[0033] Compared with the existing technology, the hole wall contour detector of this embodiment is fixed to the motion control module through the sensor, so that it can move along the inner hole contour line of the workpiece, and drive the workpiece to rotate through the turntable to detect the inner hole contour. The inner hole contour and all depth diameters can be detected in one clamping. The operation is simple, the measurement process is efficient and fast, and the true contour result can be directly detected with high precision, and the result is accurate and reliable.

[0034] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hole wall profile detector for detecting the hole wall profile of a workpiece, characterized in that: It includes a turntable, a motion control module, and a data acquisition module; the turntable is used to mount a workpiece; the data acquisition module includes a sensor, which is fixed to the motion control module so that it can move along the contour line of the inner hole of the workpiece and drive the workpiece to rotate through the turntable to detect the inner hole contour.

2. The hole wall profile detector according to claim 1, characterized in that: The sensor is a pencil-type lever grating probe. During detection, the probe abuts against the wall of the workpiece hole, so that the data acquisition module obtains the position of the probe abutting against the wall of the workpiece hole in real time through the X-axis and Z-axis gratings, and obtains parameter data of the workpiece inner hole contour.

3. The hole wall profile detector according to claim 2, characterized in that: The data acquisition module also includes a grating position acquisition mechanism and a grating acquisition card. The grating position acquisition mechanism connects the probe and the grating acquisition card to acquire the grating position of the probe on the X-axis and Z-axis, and transmits the position data to the grating acquisition card. The grating acquisition card is used to store the position data.

4. The hole wall profile detector according to any one of claims 1 to 3, characterized in that: The motion control module includes an X-axis motion mechanism, a Z-axis motion mechanism, and a Y-axis motion mechanism, which enables the sensor to move to the wall of the workpiece hole so as to move along the contour line of the workpiece inner hole.

5. The hole wall profile detector according to claim 4, characterized in that: The X-axis motion mechanism and the Z-axis motion mechanism are both controlled by servo motors.

6. The hole wall profile detector according to claim 4, characterized in that: The Y-axis motion mechanism is a Y-direction fine-tuning platform that can be manually operated.

7. The hole wall profile detector according to claim 6, characterized in that: The X-axis motion mechanism is installed on the Z-axis motion mechanism, the Y-direction fine-tuning platform is installed on the X-axis motion mechanism, and the sensor is installed on the Y-direction fine-tuning platform.

8. The hole wall profile detector according to claim 1, wherein: The turntable is an electric turntable, and its rotation is controlled by a servo motor.

9. The hole wall profile detector according to claim 1, wherein: It also includes a base, and the turntable and the motion control module are installed on the upper surface of the base.

10. The hole wall profile detector according to claim 9, characterized in that: A plurality of adjustable supporting feet are provided below the base, and an upper surface of the base is also provided with operating buttons for operating the turntable and the motion control module.

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