Three-coordinate detection device

Abstract

The invention discloses a three-coordinate detection device in the field of detection equipment. The three-coordinate detection device comprises a first rack, a second rack and a rotation center, a base plate is arranged on the first rack, a plurality of clamps are fixed on the base plate, and the clamps are used for positioning and clamping workpieces; the rotating center is arranged on the first rack, and the base plate can rotate around the rotating center; a detection head is mounted on the second rack; the vehicle detection head is an existing product, and there is no need to do so. Wherein the base plate rotates to form a mechanism for switching the clamp on one side of the second rack; the detection head detects a workpiece on a clamp on one side of the second rack; the rotatable base plate is designed, the multiple clamps are installed on the base plate, in the using process and when different workpieces need to be matched, the different clamps can be switched to one side of the detection head only by rotating the base plate, then three-coordinate detection is carried out, rapid detection of the multiple workpieces can be achieved through the device, the situation that the clamps are disassembled and assembled to adapt to the different workpieces is avoided, and the detection efficiency is improved. And the operation efficiency is greatly improved.

Description

Technical Field

[0001] This application relates to the field of testing equipment technology, specifically to a coordinate measuring machine (CMM) device. Background Technology

[0002] A coordinate measuring machine (CMM) is a device that automatically inspects the three-dimensional dimensions of a product. Before measuring a product, a workpiece coordinate system needs to be established to determine the workpiece's location, thus facilitating the CMM's inspection. Most workpieces being inspected are hat-shaped. During inspection, the workpiece needs to be fixed in a fixture for easy positioning and coordinate measurement. In practice, different fixtures need to be changed when inspecting different workpieces, which often takes considerable time and reduces inspection efficiency. Summary of the Invention

[0003] The purpose of this application is to provide a coordinate measuring machine (CMM) to address the aforementioned deficiencies in the prior art.

[0004] To achieve the above objectives, this application employs the following technical solution: This application discloses a coordinate measuring machine (CMM) device, which includes... A first frame is provided with a base plate, and a plurality of clamps are fixed on the base plate, the clamps being used to position and clamp the workpiece. A rotation center is provided on the first frame, and the base plate can rotate around the rotation center; The second frame is equipped with a detection head; The base plate rotates to form a mechanism for switching the clamps on one side of the second frame; the detection head detects the workpiece on the clamps on one side of the second frame.

[0005] In a further embodiment of this application, a drive unit is mounted on the first frame, and the drive unit drives the substrate to rotate; The drive unit includes a motor and a turntable. The motor is mounted on the mounting plate of the first frame, and the turntable is rotatably mounted on the mounting plate. The turntable and the motor are connected by a belt drive.

[0006] In a further embodiment of this application, the driving unit can also drive the substrate to move up and down; A plurality of receiving plates are inserted into the substrate, and the clamp is fixedly connected to the corresponding receiving plates. The receiving plates are provided with a first docking part, and the second frame is provided with a second docking part. The receiving plates have a first position and a second position. Wherein, the first position includes the receiving plate connecting to the substrate; the second position includes the second docking part engaging with the first docking part, the receiving plate connecting to the second frame, and the driving part driving the substrate to rise and fall, so that the receiving plate switches between the first position and the second position.

[0007] In a further embodiment, the first docking portion includes a positioning hole, a guide hole, and a first docking component, wherein the positioning hole, the guide hole, and the first docking component are disposed on the receiving plate; The second docking part includes a second docking component and a guide post, which are fixed on the second frame. The base plate is provided with positioning posts. In the first position, the positioning post is connected to the positioning hole; in the second position, the guide post is connected to the guide hole and the first mating member and the second mating member are mated.

[0008] In a further embodiment, an electromagnet is provided on the first docking member and / or the second docking member.

[0009] A further embodiment also includes a lifting unit; the lifting unit drives the driving unit and the substrate to move up and down; The lifting unit includes a cylinder and a guide assembly. The cylinder is mounted on the first frame, and the guide assembly connects the first frame and the mounting plate. The cylinder drives the mounting plate to lift and lower.

[0010] In a further embodiment of this application, several of the clamps have the same rotation radius.

[0011] In a further embodiment of this application, a first corner mark is provided on the first frame, and a second corner mark is provided on the substrate. The substrate is rotated so that the first corner mark and the second corner mark are coplanar.

[0012] In a further embodiment of this application, the substrate is made of aluminum alloy.

[0013] The beneficial effects of this application are as follows: This application designs a rotatable base plate on which multiple clamps are mounted. When different workpieces need to be matched, simply rotate the base plate to switch different clamps to the side of the detection head, and then perform three-coordinate measurement. The device can realize rapid detection of various workpieces, avoiding the need to disassemble and reassemble the clamps to adapt to different workpieces, and greatly improving operating efficiency.

[0014] The base plate is designed with a liftable structure, and the fixture is fixed on the receiving plate. When the end of the base to be tested is placed at the testing head, the position of the base plate is lowered so that the receiving plate sits on the second frame, which further ensures the measurement stability of the workpiece and improves the testing accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the coordinate measuring machine in the embodiments of this application; Figure 2 This is a schematic diagram of the conversion mechanism in the embodiments of this application; Figure 3 This is a schematic diagram of the structure at the junction of the conversion mechanism and the coordinate measuring machine in the embodiments of this application.

[0016] in: 1. First frame; 2. Second frame; 11. Rotation center; 12. Receiving plate; 13. Fixture; 14. Drive unit; 15. Base plate; 16. Mounting plate; 17. Turntable; 18. First docking part; 100. First corner mark; 200. Second corner mark; 121. Positioning hole; 122. Guide hole; 123. First docking piece; 111. Positioning post; 221. Second docking piece; 222. Guide post; 141. Cylinder; 142. Guide assembly; 143. Motor; 144. Belt; 21. Detection head; 22. Second docking part. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.

[0018] like Figure 1 and Figure 2 As shown, this application discloses an embodiment of a coordinate measuring machine (CMM) device, which includes a first frame 1, a second frame 2, and a rotation center 11. A base plate 15 is provided on the first frame 1, and several clamps 13 are fixed on the base plate 15 to position and clamp the workpiece. The rotation center 11 is located on the first frame 1, and the base plate 15 can rotate around the rotation center 11. A detection head 21 is installed on the second frame 2. This detection head is an existing product and will not be described in detail here. The base plate 15 rotates to form a mechanism for switching the clamp 13 on one side of the second frame 2; the detection head 21 detects the workpiece on the clamp 13 on one side of the second frame 2.

[0019] In use, different clamps 13 can be switched by rotating the base plate 15. When a certain clamp 13 is needed, the clamp 13 can be rotated to the detection head 21 to fix the workpiece. It is convenient and quick, and there is no need to repeatedly disassemble and assemble the clamp 13, which can improve the detection efficiency.

[0020] In some embodiments, a coordinate measuring machine is specifically designed as follows: As attached Figure 2 As shown, in this embodiment, the base plate 15 is driven to rotate by the drive unit 14. The drive unit 14 is mounted on the first frame 1 and includes a motor 143 and a turntable 17. The motor 143 is mounted on the mounting plate 16 of the first frame 1, and the turntable 17 is rotatably mounted in the middle of the mounting plate 16. The turntable 17 is rotatably mounted on the mounting plate 16 via a rotating shaft, and the rotating shaft and the output shaft of the motor 143 are connected by a belt 144. An angle sensor is set on the turntable 17, and the sensor is connected to the controller. The angle sensor feeds back the rotation angle of the base plate 15 to achieve precise switching of the position of the clamp 13.

[0021] In a further design, considering the need to improve detection accuracy, and taking into account the slight deviations that may occur when testing the workpiece on the substrate 15 (the substrate 15 may have a slight wobble), the drive unit 14 is designed to also drive the substrate 15 to rise and fall. A lifting unit is also provided on the first frame 1. The lifting unit drives the drive unit 14 and the substrate 15 to rise and fall. The lifting unit includes a cylinder 141 and a guide assembly 142. The cylinder 141 is mounted on the first frame 1, and the guide assembly 142 connects the first frame 1 and the mounting plate 16. The cylinder 141 drives the mounting plate 16 to rise and fall. The guide assembly 142 uses a linear bearing and guide rail design. The specific installation details are described here.

[0022] Several receiving plates 12 are inserted into the base plate 15, and the fixtures 13 are fixedly connected to the corresponding receiving plates 12. A pair of fixtures 13 are provided to meet the inspection of two types of workpieces. According to actual needs, the base plate 15 can be designed as a circle, and multiple fixtures 13 are fixed in a circumferential array on the edge of the base plate 15 to achieve a larger range of workpiece inspection categories. Each fixture 13 has the same rotation radius.

[0023] In the detailed design, the receiving plate 12 is provided with a first docking part 18, and the second frame 2 is provided with a second docking part 22. During the workpiece testing process, the receiving plate 12 has a first position and a second position. In the first position, the receiving plate 12 is connected to the base plate 15. In the second position, the receiving plate 12 is detached from the base plate 15 and sits on the second frame 2. At this time, the workpiece in the fixture 13 is tested. The first position includes a receiving plate 12 that is inserted into a connecting base plate 15; the second position includes a second docking part 22 that is combined with a first docking part 18, the receiving plate 12 is connected to the second frame 2, and the driving part 14 drives the base plate 15 to rise and fall, so that the receiving plate 12 can switch between the first position and the second position.

[0024] As attached Figure 3The first docking portion 18 shown in this embodiment includes a positioning hole 121, a guide hole 122, and a first docking member 123. The positioning hole 121, the guide hole 122, and the first docking member 123 are disposed on the receiving plate 12. The first docking member 123 is fixed on the side of the receiving plate 12 facing the second frame 2. The second docking portion 22 includes a second docking member 221 and a guide post 222. The second docking member 221 and the guide post 222 are fixed on the second frame 2. The base plate 15 is provided with a positioning post 111. Normally, two positioning posts 111 are required when positioning the receiving plate 12. The two positioning posts 111 are fixed diagonally on the base plate 15. The positioning posts 111 are inserted into the positioning holes 121 to realize the connection between the receiving plate 12 and the base plate 15. In the first position, the positioning post 111 is connected to the positioning hole 121; in the second position, the guide post 222 is connected to the guide hole 122 and the first docking part 123 and the second docking part 221 are docked. In actual manufacturing, there are four second docking parts 221 and the matrix part is on the second frame 2. The first docking parts 123 are matched and arranged; two guide posts 222 are provided and spaced apart on both sides of the second frame 2. The guide holes 122 are matched and arranged. The first docking piece 123 and the second docking piece 221 work together to form a positioning reference for the receiving plate 12, and the guide post 222 works with the guide hole 122 to oriented the receiving plate 12.

[0025] In some embodiments, electromagnets are provided on the first docking member 123 and the second docking member 221. When the first docking member 123 and the second docking member 221 are docked, the electromagnets are energized, and the two are firmly attracted and fixed to each other, which enhances the stability of the workpiece when it is being measured.

[0026] As attached Figure 2 As shown, when considering the installation and positioning of the substrate 15, the designer sets a first corner mark 100 on the mounting plate 16 of the first frame 1 and a second corner mark 200 on the substrate 15. The substrate 15 is rotated so that the first corner mark 100 and the second corner mark 200 are coplanar. When the substrate 15 is installed, the two corner marks are aligned and on the same plane, which means that it is correctly installed and rework is avoided.

[0027] Furthermore, the substrate 15 in the embodiment is made of aluminum alloy, which meets the requirements for weight and strength; finally, the clamp 13 in the embodiment uses multiple grippers in conjunction with the rodless cylinder 141 to achieve tightening and fixing, which is an existing product and belongs to a type of pneumatic finger.

[0028] Specific usage: The workpiece is clamped by a suitable fixture 13, and the motor 143 is started to drive the base plate 15 to rotate. After reaching the second frame 2, the cylinder 141 is started to move the base plate 15 down until the receiving plate 12 is separated from the base plate 15 and docks with the second frame 2, thus completing the final positioning of the workpiece. At this time, the detection head 21 is started to perform three-coordinate detection. When the model of the workpiece to be tested changes, select a suitable fixture 13 for clamping, and the subsequent operation is the same as above. Place the receiving plate 12 corresponding to this fixture 13 on the second frame 2 and perform three-coordinate detection. Theoretically, after the detection head 21 establishes a coordinate system for a certain model of workpiece, the establishment of a coordinate system can be avoided for the same model of workpiece.

[0029] In the description of this application, 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 used 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, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. 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 application, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

Claims

1. A coordinate measuring machine (CMM) device, characterized in that, include A first frame is provided with a base plate, and a plurality of clamps are fixed on the base plate, the clamps being used to position and clamp the workpiece. A rotation center is provided on the first frame, and the base plate can rotate around the rotation center; The second frame is equipped with a detection head; The base plate rotates to form a mechanism for switching the clamps on one side of the second frame; the detection head detects the workpiece on the clamps on one side of the second frame.

2. The coordinate measuring machine according to claim 1, characterized in that, A drive unit is mounted on the first frame, and the drive unit drives the substrate to rotate; The drive unit includes a motor and a turntable. The motor is mounted on the mounting plate of the first frame, and the turntable is rotatably mounted on the mounting plate. The turntable and the motor are connected by a belt drive.

3. The coordinate measuring machine according to claim 1, characterized in that, The driving unit can also drive the substrate to move up and down; A plurality of receiving plates are inserted into the substrate, and the clamp is fixedly connected to the corresponding receiving plates. The receiving plates are provided with a first docking part, and the second frame is provided with a second docking part. The receiving plates have a first position and a second position. Wherein, the first position includes the receiving plate connecting to the substrate; the second position includes the second docking part engaging with the first docking part, so that the receiving plate connects to the second frame; the driving part drives the substrate to rise and fall, so that the receiving plate switches between the first position and the second position.

4. The coordinate measuring machine according to claim 3, characterized in that, The first docking part includes a positioning hole, a guide hole, and a first docking component, wherein the positioning hole, the guide hole, and the first docking component are disposed on the receiving plate; The second docking part includes a second docking component and a guide post, which are fixed on the second frame; the base plate is provided with positioning posts; In the first position, the positioning post is connected to the positioning hole; in the second position, the guide post is connected to the guide hole and the first mating member and the second mating member are mated.

5. The coordinate measuring machine according to claim 4, characterized in that, The first docking member and / or the second docking member are equipped with electromagnets.

6. The coordinate measuring machine according to claim 2, characterized in that, It also includes a lifting unit; the lifting unit drives the driving unit and the base plate to move up and down; The lifting unit includes a cylinder and a guide assembly. The cylinder is fixed on the first frame, and the guide assembly connects the first frame and the mounting plate. The cylinder drives the mounting plate to move up and down in a directional manner.

7. The coordinate measuring machine according to claim 1, characterized in that, Several of the clamps have the same radius of rotation.

8. The coordinate measuring machine according to claim 1, characterized in that, The first frame is provided with a first corner mark, and the substrate is provided with a second corner mark. The substrate is rotated so that the first corner mark and the second corner mark are coplanar.

9. The coordinate measuring machine according to claim 1, characterized in that, The substrate is made of aluminum alloy.

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