1. Snatch end effector of caterpillar link, including the link of being connected with the robot, characterized by: the link is shaft-like, top connection robot, the link lower extreme has first mounting panel, be equipped with the guiding axle below the first mounting panel, the side is equipped with the displacement detector, the guiding axle passes second mounting panel and third mounting panel in proper order, the guiding axle second the second mounting panel with spring is established to one section outside cover between the third mounting panel, third mounting panel lower extreme is equipped with the clamping jaw, the clamping jaw is fixed to be got the finger, the muscle at the middle part of the caterpillar link is got to the terminal clamp of finger of clamp, first mounting panel the second mounting panel with the width of third mounting panel is less than the width of caterpillar link.

2. The end effector for grasping a caterpillar link according to claim 1, wherein: the displacement detector is a proximity switch.

3. The end effector for grasping a caterpillar link according to claim 1, wherein: the guide shafts are arranged on two sides below the first mounting plate respectively.

4. A system for grabbing a caterpillar link based on 3D vision, comprising a control module, a support, an end effector according to claim 1, and a robot capable of driving the end effector to move horizontally and vertically, wherein: the robot comprises a support, a control system and an end effector, wherein two 3d vision recognition scanning modules are installed below the top of the support, the control system comprises a recognition module, a matching module and a positioning module, a caterpillar link to be grabbed is arranged below the support, the recognition module is used for receiving caterpillar link images collected by the 3d vision recognition scanning modules and carrying out image processing and feature extraction, the matching module is used for comparing and judging the features extracted by the recognition module with reference feature data prestored in the control system, the positioning module is used for converting the coordinates of the extracted features in the vision scanning modules into grabbing coordinate parameters, the control system is used for sending the grabbing coordinate parameters to a robot as control commands and controlling the end effector to move to the upper part of the caterpillar link, and then controlling the end effector to vertically move downwards to control the end effector to grab the caterpillar link.

5. The 3D vision based system for grabbing a caterpillar link according to claim 4, characterized by: and the displacement detector of the end effector detects a signal reaching the position and transmits the signal to the control system, and the control system controls the clamping fingers to clamp the ribs of the caterpillar track section and vertically move upwards.

Background

At present, in a process of milling double faces of a caterpillar link blank, an industrial robot is involved to conduct unordered grabbing and feeding under the guidance of 3D vision. The current feeding mode has higher requirement on the positioning of the charging basket, the charging basket cannot move after being fixed, and the model of the charging basket is built in 3D vision software and is used for avoiding when the paw is grabbed. The form greatly limits the grabbing flexibility and cannot adapt to the conditions of various charging baskets on the client site.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a 3D vision-based end effector and a system for grabbing a caterpillar link.

The purpose of the invention is realized by the following technical means:

snatch end effector of caterpillar link, include the link of being connected with the robot, the link is shaft-like, the robot is connected on the top, the link lower extreme has first mounting panel, be equipped with the guiding axle below the first mounting panel, the side is equipped with the displacement detector, the guiding axle passes second mounting panel and third mounting panel in proper order, the spring is established to one section department cover between guiding axle second mounting panel and the third mounting panel, third mounting panel lower extreme is equipped with the clamping jaw, the finger is got to the clamping jaw fixed clamp, press from both sides the terminal muscle of getting the caterpillar link middle part of finger, the link, first mounting panel, the width of second mounting panel and third mounting panel is less than the width of caterpillar link.

Preferably, the displacement detector is a proximity switch.

A caterpillar track section grabbing system based on 3D vision comprises a control module, a support, an end effector and a robot capable of driving the end effector to move horizontally and vertically, wherein two 3D vision recognition scanning modules are installed below the top of the support, the control system comprises a recognition module, a matching module and a positioning module, a caterpillar track section to be grabbed is arranged below the support, the recognition module carries out image processing and feature extraction on a caterpillar track section image collected by the 3D vision recognition scanning modules, the matching module compares and judges features extracted by the recognition module with reference feature data prestored in the control system, the positioning module converts coordinates of the extracted features in a vision recognition mechanism into grabbing coordinate parameters, the control system sends the grabbing coordinate parameters as control commands to the robot and controls the end effector to move above the caterpillar track section and then controls the end effector to move vertically downwards, and controlling the end effector to grab the caterpillar track section.

Compared with the prior art, the invention has the following obvious advantages: the charging basket is not required to be modeled in 3D vision software, and the charging basket is not required to be avoided when the charging basket is grabbed, so that the adaptability of the system is greatly improved, and the system can adapt to the conditions of all the charging baskets.

Drawings

FIG. 1 is a front view of an end effector; FIG. 2 is a rear view of the end effector; fig. 3 is a block diagram of a grasping system.

Detailed Description

The invention is described in further detail below with reference to the following description of the drawings and the detailed description.

The end effector for grabbing the caterpillar track section as shown in the figures 1 and 2 comprises a connecting frame 1 connected with a robot, wherein the connecting frame 1 is in a long rod shape, the top end of the connecting frame is provided with a plurality of holes, a flange plate is installed through the holes and is fixed with the flange plate on the robot, a first mounting plate 2 is arranged at the lower end of the connecting frame 1, guide shafts are arranged on two sides below the first mounting plate 2, a proximity switch 8 is arranged at the back of the connecting frame, the guide shafts sequentially penetrate through a second mounting plate 3 and a third mounting plate, a spring 4 is sleeved outside one section between the second mounting plate 3 and the third mounting plate of each guide shaft, a clamping jaw 5 is arranged at the lower end of the third mounting plate, fingers 6 are fixedly clamped by the clamping jaw 5, the tail ends of the clamping fingers 6 clamp ribs in the middle of the caterpillar track section 7, and the width of the connecting frame 1, the first mounting plate 2, the second mounting plate 3 and the third mounting plate is smaller than that of the caterpillar track section 7.

The system for grabbing the caterpillar link based on the 3D vision as shown in the figure 3 comprises a control module, a support 9, an end effector and a six-axis robot 11, wherein two 3D vision recognition scanning modules 10 are installed below the top of the support 9, the control system comprises a recognition module, a matching module and a positioning module, the caterpillar link to be grabbed is placed in two baskets 12, the baskets 12 are respectively arranged below the 3D vision recognition scanning modules 10, the 3D vision recognition scanning modules 10 collect caterpillar link images, the recognition module carries out image processing and feature extraction on the received caterpillar link images, the matching module compares and judges the features extracted by the recognition module with reference feature data prestored in the control system, the positioning module converts the coordinates of the extracted features in the vision recognition scanning modules 10 into grabbing coordinate parameters, the control system sends the grabbing coordinate parameters to the robot as a control command and controls the end effector to move to the upper part of the caterpillar link, and then the end effector is controlled to vertically move downwards, and the end effector is controlled to grab the caterpillar track section. In the coordinate parameters controlling the movement of the end effector, the orientation of the end effector is optimized to be locked so that the end effector is perpendicular to the ground plane at any time.

When the end effector vertically moves downwards, the clamping fingers 6 touch the caterpillar track sections, the springs 4 are compressed, the second mounting plates 3 move upwards, the proximity switches 8 detect signals and then transmit the signals to the control system, and the control system controls the clamping fingers 6 to clamp the ribs of the caterpillar track sections and vertically move upwards to complete the clamping process.