Integrated tooling for precision positioning and testing of gasoline engine cylinder blocks

Abstract

This application relates to the field of cylinder block positioning and inspection, and discloses an integrated tooling for precision positioning and inspection of gasoline engine cylinder blocks. The tooling includes a positioning assembly comprising a positioning frame and a six-axis robotic arm. The positioning frame includes a base frame, conveyor belts, belt shafts, a tray, a detection photoelectric sensor, and a clamping plate. Conveyor belts are located on both sides of the top of the base frame, with belt shafts at both ends. The belt shafts are located at the ends of the positioning frame and have drive wheels at both ends, which are mounted on the conveyor belts. A detection photoelectric sensor is located at the bottom inner side of the positioning frame. A tray is located on one side of the detection photoelectric sensor, and a clamping plate is located on one side of the tray. The clamping plate is raised and lowered by a hydraulic cylinder. The six-axis robotic arm is located on one side of the positioning frame, and a 3D camera is located on the top of the positioning frame, with the camera's position corresponding to the tray. This application solves the problems of low efficiency and high missed detection rate in traditional manual operation modes.

Description

Technical Field

[0001] This application relates to the field of cylinder block positioning and testing technology, such as an integrated tooling for precision positioning and testing of gasoline engine cylinder blocks. Background Technology

[0002] As a core component of small power machinery, the cylinder block of a gasoline engine directly affects engine performance through its key dimensions such as bore diameter and flatness.

[0003] In the process of machining gasoline engine cylinder blocks, it is necessary to transfer and position the raw material cylinder blocks and inspect the finished product. In the existing technology, manual transfer is generally used, and during inspection, either workers use a coordinate measuring machine to inspect one by one, which cannot meet the needs of real-time monitoring and the inspection of a single unit is time-consuming, or workers use visual inspection, which cannot quickly identify three-dimensional defects and has a high rate of missed detection. Utility Model Content

[0004] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0005] This disclosure provides an integrated tooling for precision positioning and inspection of gasoline engine cylinder blocks, solving the problems of low efficiency and high missed detection rate in traditional manual operation modes.

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

[0007] An integrated tooling for precision positioning and inspection of gasoline engine cylinder blocks includes a positioning and inspection assembly. This assembly, located on the cylinder block manufacturing line, is primarily used for positioning raw materials and inspecting finished products. The positioning assembly includes a positioning frame and a six-axis robotic arm. The positioning frame comprises a base, conveyor belts, belt shafts, a tray, a detection photoelectric sensor, and a clamping plate. Conveyor belts are located on both sides of the top of the base, with the distance between them less than the width of the raw cylinder block material. The two sets of conveyor belts effectively support the material. Belt shafts are located at both ends of the conveyor belts, and these shafts are positioned at the ends of the positioning frame. Both ends are equipped with drive wheels, which are sleeved by the conveyor belt. A drive motor is connected to the outside of one of the drive wheels, and the drive motor drives the conveyor belt to operate. A detection photoelectric sensor is installed at the bottom inner side of the positioning frame. A tray is installed on one side of the detection photoelectric sensor, and a clamping plate is installed on one side of the tray. The clamping plate can be raised and lowered by a hydraulic cylinder. Raw materials are taken out of the raw material cabinet by the AGV trolley, then travel to the end of the positioning frame and push the raw materials onto the conveyor belt. The conveyor belt then transports the materials forward. When the materials pass the detection photoelectric sensor, they are detected. The signal-controlled clamping plate rises to stop the raw material goods above the pallet, achieving positioning and stopping. The six-axis robotic arm is located on one side of the positioning frame, and a 3D camera is installed on the top of the positioning frame. The position of the 3D camera corresponds to the pallet. The six-axis robotic arm can replace different specifications of grippers to adapt to different specifications of cylinder goods. The six-axis robotic arm places the goods in the processing center for processing. After processing, the finished product is also taken out by the six-axis robotic arm and extended to the pallet for rotation. The 3D camera performs scanning and inspection. The 3D camera is a current technology that scans the surface of the cylinder after the finished product with point cloud resolution and generates 3D topographic data for analysis. It simultaneously outputs dimensional deviations and surface parameters to identify defects and determine the quality level to complete the inspection. When a defective product appears, an alarm signal can be fed back to notify the worker. Through the automatic transportation and positioning of cylinder raw materials, the feedback signal controls the six-axis robotic arm to pick up the raw materials and send them to the processing center, and extend the finished products to the bottom of the 3D camera for inspection. This automates the process from raw material positioning to finished product inspection, greatly improving efficiency, reducing labor costs, and effectively solving the problems of low efficiency and high missed inspection rate in traditional manual operation mode.

[0008] Furthermore, a machining center is set on one side of the six-axis robotic arm, which automatically processes the raw material cylinders. A temporary storage cabinet is set on one side of the machining center, which is used to temporarily store the raw material cylinders to be processed. When the AGV trolley continuously transports the raw material cylinders from the raw material cabinet, the six-axis robotic arm will temporarily store the raw material cylinders that cannot be processed in time into the temporary storage cabinet.

[0009] Furthermore, a support rod is provided on one side of the positioning frame, and the three-dimensional camera is located at the top of the support rod, thereby fixing the three-dimensional camera.

[0010] Furthermore, the bottom of the positioning frame is provided with several cable cabinets, which are used to house the wiring harnesses and other components of the electrical control system, and also serve to support the detection and positioning group, machining center, six-axis robotic arm, temporary storage cabinet and other components. The top of each cable cabinet is provided with pads, which can buffer vibration and effectively alleviate the problem of loosening of the fixing screws of various components due to long-term vibration and resonance.

[0011] Furthermore, each of the cabinets is equipped with positioning casters on its top to facilitate the movement and assembly of the cabinets.

[0012] Furthermore, a pallet storage frame and a clamping tray are provided on one side of the positioning frame. Pallets of different specifications are placed and stored through the pallet storage frame, and clamps of different specifications are placed through the clamping tray.

[0013] Furthermore, the pallet storage frame consists of a first mounting plate and tie rods. The first mounting plate has a square structure, and tie rods are fixedly installed at four external positions on the top side. The tie rods form a three-dimensional frame to facilitate the temporary storage of pallets of different specifications inside. For raw material cylinders of different specifications, corresponding pallets can be replaced and placed inside the positioning frame. The pallets can also serve as a checkerboard calibration plate for the 3D camera to inspect the finished product. At the same time, the pallets have holes, and a laser displacement sensor coaxially set with the 3D camera can be installed on the bottom side of the positioning frame. The laser displacement sensor can scan and detect the aperture size of the finished product through the holes in the pallets. In this way, the aperture can be detected simultaneously with the 3D camera's morphological inspection of the finished product, further improving the detection range.

[0014] Furthermore, the clamping plate is located on one side of the pallet storage frame and includes a second mounting plate and an insertion plate. Two fixing rods are fixedly installed on the top two sides of the second mounting plate, and an insertion plate is fixedly installed at the top of the fixing rods. The insertion plate has holes for inserting a number of gripper connectors. Grippers of different specifications are fixedly connected through the gripper connectors. When operating on cylinders of different specifications, the six-axis robotic arm can be connected to the gripper connectors of the corresponding specifications of the grippers to adapt to the stable clamping of the cylinder by the six-axis robotic arm.

[0015] The working principles of the AGV, machining center, and six-axis robotic arm are all existing technologies. Those skilled in the art can clearly and correctly understand this utility model and can obtain relevant information from existing literature.

[0016] The integrated tooling for precision positioning and inspection of gasoline engine cylinder blocks provided in this embodiment can achieve the following technical effects:

[0017] 1): This utility model uses a 3D camera to scan the surface of the finished cylinder block at point cloud resolution and generates 3D morphological data for analysis. It simultaneously outputs dimensional deviations and surface parameters to identify defects and determine the quality level to complete the inspection. This can effectively solve the problems of low efficiency and high missed detection rate in the traditional manual operation mode.

[0018] 2): This utility model automates the transportation and positioning of raw materials in the cylinder, and uses feedback signals to control a six-axis robotic arm to pick up and deliver the raw materials to the processing center, and to extend the finished products to the bottom of the 3D camera for inspection. This achieves automation from raw material positioning to finished product inspection, greatly improving efficiency and reducing labor costs.

[0019] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0020] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings are not scaled. Other drawings can be obtained by those skilled in the art based on these drawings.

[0021] Figure 1 This is a schematic diagram showing the position of this utility model within the overall production line;

[0022] Figure 2 This is a schematic diagram of the integrated tooling structure for precision positioning and testing of gasoline engine cylinder blocks according to this utility model;

[0023] Figure 3 This is a schematic diagram of the positioning frame structure in the integrated tooling for precision positioning and testing of gasoline engine cylinder blocks of this utility model;

[0024] Figure 4 This is a schematic diagram of the pallet storage frame and fixture tray in the integrated tooling for precision positioning and testing of gasoline engine cylinder blocks of this utility model.

[0025] Figure label:

[0026] 1. Detection and positioning assembly; 11. Positioning frame; 111. Base frame; 112. Conveyor belt; 113. Belt shaft; 114. Drive wheel; 115. Pallet; 116. Detection photoelectric sensor; 117. Clamping plate; 12. Pallet storage frame; 121. First mounting plate; 122. Bundling rod; 13. Fixture plate; 131. Second mounting plate; 132. Fixing rod; 133. Insertion plate; 134. Gripper connector; 14. 3D camera; 141. Support rod; 15. Placement pad; 16. Cable cabinet; 17. Positioning caster wheel; 2. Raw material cabinet; 3. Six-axis robotic arm; 4. Machining center; 5. Temporary storage cabinet. Detailed Implementation

[0027] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0028] An integrated tooling for precision positioning and inspection of gasoline engine cylinder blocks includes a positioning and inspection unit 1. The positioning and inspection unit 1 is installed in the cylinder block processing production line and is mainly used for positioning raw materials and inspecting finished products. The positioning and inspection unit 1 includes a positioning frame 11 and a six-axis robotic arm 3. The six-axis robotic arm 3 is located on one side of the positioning frame 11. A machining center 4 is set on one side of the six-axis robotic arm 3. The machining center 4 automatically processes the raw material cylinder blocks. A temporary storage cabinet 5 is set on one side of the machining center 4. The temporary storage cabinet 5 is used to temporarily store the raw material cylinder blocks to be processed. When the AGV trolley continuously transports the raw material cylinder blocks from the raw material cabinet 2, the six-axis robotic arm 3 will temporarily store the raw material cylinder blocks that cannot be processed in the temporary storage cabinet 5.

[0029] The positioning frame 11 includes a base frame 111, conveyor belts 112, belt shafts 113, a tray 115, a detection photoelectric sensor 116, and a clamping plate 117. Conveyor belts 112 are respectively provided on both sides of the top of the base frame 111. The distance between the conveyor belts 112 is less than the width of the raw material in the cylinder. The two sets of conveyor belts 112 can support the goods. Each end of the conveyor belt 112 has a belt shaft 113, which is located at the end of the positioning frame 11 and has a drive wheel 114 at each end. The drive wheel 114 is sleeved by the conveyor belt 112, and a drive motor is connected to the outside of one of the drive wheels 114. The motor drive ensures the operation of the conveyor belt 112. A detection photoelectric sensor 116 is installed on the bottom inner side of the positioning frame 11. A tray 115 is installed on one side of the detection photoelectric sensor 116. A clamping plate 117 is installed on one side of the tray 115. The clamping plate 117 is controlled to lift and lower by a hydraulic cylinder. The raw materials are taken out of the raw material cabinet 2 by the AGV trolley and then travel to the end of the positioning frame 11 to push the raw materials onto the conveyor belt 112. The conveyor belt 112 will then transport the materials forward. When the materials pass the detection photoelectric sensor 116, they will be detected. The signal controls the clamping plate 117 to rise and block the raw materials, stopping them above the tray 115 to achieve positioning and stop.

[0030] A 3D camera 14 is mounted on the top of the positioning frame 11, and a support rod 141 is mounted on one side of the positioning frame 11. The 3D camera 14 is mounted on the top of the support rod 141 and is fixed in place by the support rod 141. The position of the 3D camera 14 corresponds to that of the tray 115. The six-axis robotic arm 3 can replace the grippers of different specifications to adapt to cylinders of different specifications. The six-axis robotic arm 3 places the goods in the processing center 4 for processing. After processing, the finished product is also taken out by the six-axis robotic arm 3 and extended to the tray 115 for rotation. The 3D camera 14 scans and detects the finished cylinder surface with point cloud resolution and generates 3D topographic data for analysis. It simultaneously outputs dimensional deviations and surface parameters to identify defects and determine the quality level to complete the inspection. When a defective product appears, an alarm signal can be fed back to notify the worker.

[0031] The bottom of the positioning frame 11 is provided with several cable cabinets 16. The cable cabinets 16 are used to house the wiring harnesses and other components of the electrical control system, and also provide support for the detection and positioning group 1, the machining center 4, the six-axis robotic arm 3, the temporary storage cabinet 5 and other components. Each cable cabinet 16 is provided with a pad 15 on its top, which can buffer vibration and effectively alleviate the problem of loosening of the fixing screws of various components due to long-term vibration and resonance. Each cable cabinet 16 is provided with a positioning caster wheel 17 on its top, which facilitates the movement and assembly of the cable cabinet 16.

[0032] The positioning frame 11 is provided with a tray storage frame 12 and a clamping tray 13 on one side. The tray storage frame 12 holds trays 115 of different specifications, and the clamping tray 13 holds clamps of different specifications. The tray storage frame 12 consists of a first mounting plate 121 and tie rods 122. The first mounting plate 121 has a square structure, and tie rods 122 are fixedly installed at four external positions on its top side, forming a three-dimensional frame to facilitate the temporary storage of trays 115 of different specifications inside. For raw material cylinders of different specifications, corresponding trays 115 can be replaced and placed inside the positioning frame 11. The trays 115 serve as calibration plates for the checkerboard calibration plate used by the 3D camera 14 during finished product inspection. The trays 115 also have holes, allowing a laser, coaxially aligned with the 3D camera 14, to be placed on the bottom side of the positioning frame 11. The optical displacement sensor and laser displacement sensor can scan and detect the aperture size of the finished product through the holes opened in the tray 115. This allows the 3D camera 14 to detect the aperture size while simultaneously detecting the shape of the finished product, further improving the detection range. The clamping plate 13 is located on one side of the tray storage frame 12 and includes a second mounting plate 131 and an insertion plate 133. Two fixing rods 132 are fixedly installed on both sides of the top of the second mounting plate 131. An insertion plate 133 is fixedly installed at the top of the fixing rods 132. Several gripper connectors 134 are inserted through the openings of the insertion plate 133. Grippers of different specifications are fixedly connected through the gripper connectors 134. When operating on cylinders of different specifications, the six-axis robotic arm 3 can be connected to the gripper connectors 134 of the corresponding specifications to adapt to the stable clamping of the cylinder by the six-axis robotic arm 3.

[0033] By automatically transporting and positioning the raw materials in the cylinder, the feedback signal controls the six-axis robotic arm 3 to pick up and deliver the raw materials to the processing center 4, and extend the finished products to the bottom of the 3D camera 14 for inspection. This achieves automation from raw material positioning to finished product inspection, greatly improves efficiency, reduces labor costs, and can effectively solve the problems of low efficiency and high missed inspection rate in the traditional manual operation mode.

[0034] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Some parts and features of some embodiments may be included or replaced by parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An integrated tooling for precision positioning and inspection of gasoline engine cylinder blocks, characterized in that, The system includes a detection and positioning assembly, comprising a positioning frame and a six-axis robotic arm. The positioning frame includes a base frame, conveyor belts, belt shafts, a tray, a detection photoelectric sensor, and a clamping plate. Conveyor belts are located on both sides of the top of the base frame, and belt shafts are located at both ends of the conveyor belts. The belt shafts are located at the ends of the positioning frame and have drive wheels at both ends. The drive wheels are mounted on the conveyor belts. A detection photoelectric sensor is located at the bottom inner side of the positioning frame. A tray is located on one side of the detection photoelectric sensor, and a clamping plate is located on one side of the tray. The six-axis robotic arm is located on one side of the positioning frame, and a three-dimensional camera is located on the top of the positioning frame, with the position of the three-dimensional camera corresponding to the tray.

2. The integrated tooling for precision positioning and testing of gasoline engine cylinder blocks according to claim 1, characterized in that, A machining center is located on one side of the six-axis robotic arm, and a temporary storage cabinet is located on the other side of the machining center.

3. The integrated tooling for precision positioning and inspection of gasoline engine cylinder blocks according to claim 1, characterized in that, A support rod is provided on one side of the positioning frame, and the three-dimensional camera is located at the top of the support rod.

4. The integrated tooling for precision positioning and inspection of gasoline engine cylinder blocks according to claim 1, characterized in that, The bottom of the positioning frame is equipped with several cable cabinets, and the top of each cable cabinet is equipped with a pad.

5. The integrated tooling for precision positioning and inspection of gasoline engine cylinder blocks according to claim 4, characterized in that, All the cabinets are equipped with positioning casters on the top.

6. The integrated tooling for precision positioning and inspection of gasoline engine cylinder blocks according to claim 1, characterized in that, The positioning frame is equipped with a tray storage frame and a clamping tray on one side.

7. The integrated tooling for precision positioning and inspection of gasoline engine cylinder blocks according to claim 6, characterized in that, The pallet storage frame consists of a first mounting plate and tie rods. The first mounting plate has a square structure and tie rods are fixedly installed at the four outer positions on the top side, forming a three-dimensional frame.

8. The integrated tooling for precision positioning and inspection of gasoline engine cylinder blocks according to claim 6, characterized in that, The clamp is mounted on one side of the pallet storage frame and includes a second mounting plate and an insertion plate. Two fixing rods are fixedly mounted on the top two sides of the second mounting plate, and an insertion plate is fixedly mounted on the top of the fixing rods. The insertion plate has openings for inserting several gripper connectors.

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