Multi-station self-positioning floating clamping and workpiece automatic flip intelligent fixture system

Patent metadata

Field	Value
Publication number	US-12103129-B2
Application number	US-202017281035-A
Country	US
Kind code	B2
Filing date	Feb 6, 2020
Priority date	Dec 13, 2019
Publication date	Oct 1, 2024
Grant date	Oct 1, 2024

Abstract

A multi-station self-positioning floating clamping and workpiece automatic flip intelligent fixture system includes a linear motion device, a workpiece automatic flip device and a self-positioning floating clamping device. A bottom portion of the workpiece automatic flip device is connected to the linear motion device, which drives the workpiece automatic flip device to move horizontally; the self-positioning floating clamping device clamps the workpiece, the workpiece automatic flip device is arranged opposite to the self-positioning floating clamping device, and the workpiece automatic flip device clamps the workpiece and drives the workpiece to turn over; and the workpiece automatic flip device includes a rotary cylinder, which is connected to a hydraulic cylinder, a piston rod of the hydraulic cylinder is connected to a mechanical claw opening-and-closing finger through a hinge mechanism, and the hydraulic cylinder reciprocates to drive the mechanical claw opening-and-closing finger to open and close to clamp or release the workpiece.

First claim

What is claimed is:

1. A multi-station self-positioning floating clamping and workpiece automatic flip intelligent fixture system, comprising a linear motion device, a workpiece automatic flip device, and a self-positioning floating clamping device, wherein:
a bottom of the workpiece automatic flip device is connected to the linear motion device, and the linear motion device drives the workpiece automatic flip device to move horizontally;
the self-positioning floating clamping device clamps a workpiece, the workpiece automatic flip device is arranged opposite to the self-positioning floating clamping device, and the workpiece automatic flip device is capable of clamping the workpiece and driving the workpiece to turn over;
the workpiece automatic flip device comprises a rotary cylinder, the rotary cylinder is connected to a hydraulic cylinder, a piston rod of the hydraulic cylinder is connected to mechanical claw opening-and-closing fingers through a hinge mechanism, and the hydraulic cylinder reciprocates to drive the mechanical claw opening-and-closing finger to open and close to clamp or release the workpiece; and
the self-positioning floating clamping device comprises a fixture bottom plate, a plurality of supporting plates are secured on the fixture bottom plate, a top portion of the supporting plate is fixedly connected to a fixture main plate, the fixture main plate is provided with a plurality of clamping stations, and every two of the clamping stations are provided with one floating clamping assembly, and the floating clamping assembly clamps or releases the workpiece.

2. The multi-station self-positioning floating clamping and workpiece automatic flip intelligent fixture system according to claim 1 , wherein the mechanical claw opening-and-closing fingers are provided with two, and the two of the mechanical claw opening-and-closing fingers are oppositely arranged, the hinge mechanism is connected to a middle portion of the mechanical claw opening—and—closing finger, an end portion of the mechanical claw opening-and-closing finger is hinged to a hinge securing plate, and the hinge securing plate is secured to the hydraulic cylinder; the hinge mechanism comprises a hollow hinge buckle secured to the piston rod of the hydraulic cylinder, two ends of the hollow hinge buckle are hinged with a hinge buckle, and an end portion of the hinge buckle is hinged with the middle portion of the mechanical claw opening-and-closing finger.

3. The multi multi-station self-positioning floating clamping and workpiece automatic flip intelligent fixture system according to claim 1 , wherein the mechanical claw opening-and-closing finger is a rod-shaped structure with a folded angle, a clamping end of the mechanical claw opening-and-closing finger is a wedge-shaped surface, and a cushion is fixedly arranged at the clamping end of the mechanical claw opening-and-closing finger.

4. The multi-station self-positioning floating clamping and workpiece automatic flip intelligent fixture system according to claim 1 , wherein the floating clamping assembly comprises a vertically arranged pull rod, a bottom portion of the pull rod is connected to a hydraulic cylinder of the self-positioning floating clamping device, a top portion of the pull rod is hinged with a connecting plate, two ends of the connecting plate are hinged with vertical connecting rods, a top portion of each connecting rod is fixedly connected to a floating clamping base, the two floating clamping bases are oppositely arranged, and opposite sides of the floating clamping bases are each provided with a floating clamping block, the floating clamping blocks are capable of rotating around a joint with the floating clamping base, and the two floating clamping blocks clamp the workpiece.

5. The multi-station self-positioning floating clamping and workpiece automatic flip intelligent fixture system according to claim 4 , wherein the floating clamping block is horizontally arranged, and two ends of the floating clamping block are each provided with a semicircular boss; an external side face of the floating clamping base is an inclined wedge surface, the fixture main plate is provided with a plurality of bumps, side surfaces of which are inclined wedge surfaces and are in contact fit with the inclined wedge surface of the floating clamping base.

6. The multi-station self-positioning floating clamping and workpiece automatic flip intelligent fixture system according to claim 1 , wherein the self-positioning floating clamping device comprises a bottom plate, one end of the bottom plate is fixedly provided with a positioning supporting assembly and the other end of the bottom plate is provided with a floating pressing assembly, a plurality of positioning and floating clamping assemblies are arranged between the positioning supporting assembly and the floating pressing assembly, adjacent positioning and floating clamping assemblies clamp the workpiece, the floating pressing assembly is connected to the hydraulic cylinder, a linear guide rail is arranged on the bottom plate, and the positioning and floating clamping assembly and the floating pressing assembly are capable of moving horizontally along the linear guide rail.

7. The multi-station self-positioning floating clamping and workpiece automatic flip intelligent fixture system according to claim 6 , wherein the positioning and floating clamping assembly comprises a linear bearing pedestal matched with the linear guide rail, a positioning plate is fixedly arranged on a top portion of the linear bearing pedestal, a side portion of the positioning plate is connected to a floating clamping block, and the floating clamping block is capable of rotating around a joint with the positioning plate.

8. The multi-station self-positioning floating clamping and workpiece automatic flip intelligent fixture system according to claim 1 , wherein the linear motion device comprises a lower bottom plate, the lower bottom plate is provided with a linear guide rail and a ball screw in parallel, bottom portions of a plurality of parallel linear motion assemblies are connected to the linear guide rail and the ball screw, and the ball screw is connected to a servo motor; and each of the linear motion assemblies is connected to the workpiece automatic flip device.

9. The multi-station self-positioning floating clamping and workpiece automatic flip intelligent fixture system according to claim 1 , further comprising a machine vision system, wherein the machine vision system comprises an industrial camera arranged above the self-positioning floating clamping device, the industrial camera is connected to an image acquisition card, the image acquisition card is connected to an industrial computer, the industrial camera collects image information of the workpiece and transmits the image information to the image acquisition card, the image acquisition card transmits the image information to the industrial computer, the industrial computer analyzes and processes the image information, determines a status of the workpiece, and controls the linear motion device, the workpiece automatic flip device and the self-positioning floating clamping device to operate.

Assignees

• Univ Qingdao Technology
• Ningbo Sanhan Alloy Mat Co Ltd

Inventors

• Zhang Yanbin
• Tang Lizhi
• Luo Liang
• Li Changhe
• Xu Haizhou
• Yang Min
• Hong Huaping
• Li Haogang
• Yin Shuo
• Cui Xin
• Liu Mingzheng
• Gao Teng
• Hou Yali
• Li Runze

Classifications

• G06T7/0004

  Industrial image inspection · CPC title

• G06T1/0014

  Image feed-back for automatic industrial control, e.g. robot with camera (robots B25J19/023) · CPC title

• B23Q3/18

  for positioning only · CPC title

• B23Q1/25

  Movable or adjustable work or tool supports · CPC title

• B23Q17/249

  using image analysis, e.g. for radar, infrared or array camera images · CPC title