With the rapid development of the automotive industry, the progression of welding automation and the precision of production lines have increased, leading companies to increase their demands on the structure and functionality of welding accessories.
Therefore, in the automotive welding automation process, a rational structure of jigs and fixtures facilitates the sensible arrangement of assembly line production, helps balance workstation time, and reduces non-productive time and production costs.
Hydraulic devices are devices that replace mechanical parts with hydraulic components to achieve automatic part positioning, support and clamping through hydraulic control.
They offer significant clamping force, reliable clamping, smooth operation and user convenience, making them widely used in CNC machine tools, machining centers and automated production lines. By assembling the selected hydraulic components with the designed mechanical parts, the required fixation can be achieved.
The design of hydraulic luminaires is a process of constant refinement and improvement. We are sharing two patent solutions today, specifically the detailed design and interpretation of the steering wheel housing three-point centering hydraulic attachment and the gear cover hydraulic attachment, to enhance customers' understanding of hydraulic attachment technology.
I. Hydraulic steering wheel housing three-point centering device
Problem addressed:
Currently, the centering machining device for the 10th sequence of the flywheel housing uses two fixed guide wheels and a spring-loaded floating guide wheel. Due to the different casting batches of the blanks, there are significant size deviations, causing substantial discrepancies between the center of the hole at the part positioning point and the center of the fixture positioning.
The fixture does not perform its centering function, resulting in uneven hole wall thickness during subsequent machining of the part. This irregularity is excessive, resulting in defective products.
1. Accessory base plate
2. Three-point centering component
3. Sequence Valve
4. Support Column
5. Support cylinder
6. Rotating cylinder
7. Angular positioning block
8. Traction cylinder
9. Vertical plate
10. Angular positioning component
11. Sequence Valve
24. Workpiece
Technical solution:
To overcome the above-mentioned shortcomings, a three-point hydraulic device was designed into the flywheel housing. Through the thrust cylinder, three evenly distributed guide rods are driven, allowing the positioning heads on the guide rods to be centered.
1. Accessory base plate
2. Three-point centering component
3. Sequence Valve
4. Support Column
5. Support cylinder
6. Angular rotating cylinder
7. Angular Location Block
8. Pull the cylinder
9. Vertical plate
10. Angular positioning component
11. Sequence Valve
Technical characteristics:
The steering wheel housing three-point hydraulic centering device comprises the following parts in sequence: device base plate, three-point centering component, A-sequence valve, B-sequence valve, support column, support cylinder, angular rotating cylinder and the angular positioning component.
The three-point centering component is installed on the base plate of the fixture, and the positioning head is placed in the same arc by adjusting the adjustment pad. The positioning head is centered by pushing three guide rods evenly distributed across the thrust cylinder.
The sequence valves, support column, support cylinder and angle rotary cylinder are all mounted on the device base plate. The angular positioning component is installed on the device base plate with the traction cylinder placed on the vertical plate connected to the angular locating block.
1. Accessory base plate
2. Three-point centering component
4. Support Post
10. Angular positioning component
12. Head positioning
13. Adjustment Cushion
14. Positioning guide bushing
15. Three-Point Positioning Seat
16. Spring
17. Bushing
18. Guide rod
19. Centering sleeve
20. Pressure cylinder
21. Push rod
22. Spring
23. Thrust flange
24. Workpiece
Use:
Place the workpiece on the support post in the direction of angular positioning. At this time, the solenoid valve of the hydraulic station is in the middle position for discharging, and the angular positioning block is inserted into the groove of the part for positioning.
After the oil circuit is filled with oil, the pressure cylinder on the three-point centering component pushes the pressure rod, causing the positioning head on the guide rod to move and contact the positioning surface of the workpiece to achieve three-point centering positioning.
Then, through the sequential valve, the support cylinder rises to fix. Through the sequence valve again, the angle cylinder presses the workpiece. After processing the part, the oil circuit is discharged, and at this time the traction cylinder on the angular positioning component pulls back the angular positioning block, disengaging the part.
The pressure cylinder in the three-point centering component retracts, the pressure rod retracts under the action of the spring, the guide rod drives the positioning head to retract under the action of the spring, and the positioning head disengages from the workpiece of work.
II. Hydraulic device for gear cover
Issue:
Currently, the gear cover manufacturing process relies on the large hole in the blank for positioning. The top surface and holes are then machined, followed by using the finished holes for positioning and drilling the blank. This requires two sets of accessories and results in high costs due to the processing steps involved.
1. Fixing plate
2. Auxiliary support cylinder
3. Corner turning cylinder
4. Positioning disc assembly
5. Support column
6. Lever cylinder
7. Sequence valve
8. Support cylinder
9. Pull the cylinder
10. Rough positioning rod
11. Lock
12. Elastic Positioning Pin
Technical solution:
Design a gear cover hydraulic fixture that uses the large hole in the blank as the positioning hole, and process the large hole in the blank in this sequence. The positioning of the large hole of the blank is composed of the positioning disc assembly and the traction cylinder.
After the workpiece is positioned and clamped, the traction cylinder pulls the positioning disc away from the positioning hole, while the auxiliary support cylinder moves up and clamps.
Technical characteristics:
The drive cylinder is located inside the positioning disc assembly; auxiliary support cylinder, angle swing cylinder, positioning disc assembly, support column, lever cylinder, sequence valve, support cylinder, thick positioning rod, lock and elastic positioning pin assembly are all mounted on the plate fastening; the sequence valve controls the traction, lowering and clamping functions of the traction cylinder, lever cylinder and auxiliary support cylinder; the lock manages the position between the clamping plate and the work table.
2. Auxiliary Support Cylinder
3. Angular rotation cylinder
6. Lever cylinder
7. Sequence Valve
8. Support cylinder
9. Pull the cylinder
Usage process:
The workpiece is placed on the support pillar along the approximate positioning rod on the clamping plate. The hole in the workpiece is inserted into the positioning disc assembly and elastic positioning pin assembly. The angular rotation cylinder fixes the workpiece and at the same time the supporting cylinder fixes it.
Through the sequence valve, the lever cylinder is clamped and the auxiliary support cylinder pushes upward to lock, while simultaneously the traction cylinder pulls down the positioning disc in the positioning disc assembly, disengaging from the work piece.
