Rolling Threading Machine Working Principle
The principle of cold rolling small-module involute splines on a thread rolling machine. L and R are a pair of involute rolling wheels with identical parameters, mounted on the two main spindles of the thread rolling machine, and can rotate synchronously in the same direction under the drive of the transmission mechanism. The R wheel can be driven by a hydraulic cylinder for radial feed motion, and the L wheel can be adjusted to coincide with the indentation of the R wheel on the surface of the workpiece P. The workpiece P is positioned and clamped by two center holes. Adjusting the fixture allows the workpiece to move axially. Under force, it can swing by an angle Φ around an axis parallel to the machine tool spindle through point O on the fixture, ensuring that the workpiece remains in a free rolling state with the two rolling wheels during the cold rolling process, while also facilitating workpiece clamping.
The structural dimensions, geometric tolerances and technical requirements of the rolling wheel are formulated with reference to the thread rolling wheel and cylindrical measuring gear. The common normal length or span M of the rolling wheel is calculated according to the spline data in the gear manufacturing process. The required material can be Cr12MoV (hardness 59~62HRC).
Z28-250 Rolling Threading Machine specification sheet
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Items |
Parameters |
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diameter |
φ80mm |
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|
thread pitch |
8mm |
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|
Spindle Angle |
±10° |
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|
Maximum rolling pressure |
360kn |
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|
Spindle RPM |
Exchange gear 22/28/35/45/56/70rpm |
|
|
Thread rolling wheel range |
diameter |
φ220mm |
|
aperture |
φ75mm |
|
|
Maximum width |
150mm |
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|
Spindle drive power |
15kw |
|
|
Hydraulic transmission power |
7.5kw |
|
|
Physical size |
1950*1700*1550mm |
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|
Machine weight |
3100kg |
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Yushi thread rolling machine advantages compared with other supplier
The sliding base plate is thickened, with the thickness increased by about 40% compared to the original, making it more stable and durable. The top part is made of ductile iron casting. The sliding track uses tapered strips and a dovetail structure, making the slide rail more stable and durable during operation.
This tool uses a worm gear to adjust the stroke, which can achieve fine adjustment of the thread depth during workpiece processing. The handwheel only adjusts 0.2mm with one full rotation, while the original one adjusted 3-6mm with one rotation, a difference of 15-30 times in adjustment accuracy. The adjustment of the mold distance is very rough, and if the thread depth is slightly different, it is difficult to adjust. Either it is adjusted too deep and the material bounces up, or it is adjusted too shallow and it is difficult to tighten the nut.
The original 39mm diameter return rod with spring was replaced with an 80mm diameter double-acting hydraulic cylinder piston rod. The original rod was prone to breakage when performing heavy lifting or prolonged tasks, posing a safety hazard if someone was standing near the machine and could be injured. The improved model eliminates this issue of return rod breakage.
The hydraulic structure is bidirectional hydraulic, with high pressure for forward movement and low pressure for reverse movement during operation. Both forward and reverse movements are hydraulically controlled, achieving separation of high and low pressure, protecting the equipment, and reducing oil temperature. The hydraulic system is the same as that of the Z28-200, Z28-260, and Z28-280 large thread rolling machines, making it more stable and durable.
Company Profile
Packing & Delivery for Thread Rolling Machine
Packaging : standard export wooden case packing. you can by sea or air. We have our own farwarder. We can check the delivery information timely. You can also use forwarder by yours. We will contact with him ASAP.
Delivery time:6-10 days after receiving the deposit.
FAQ
Q: How to improve the technical skills of machine tool maintenance personnel?
A: Maintenance personnel for mechanical equipment need to be familiar with the equipment's user manual and have a thorough understanding of its performance and operating conditions. They also need to receive regular professional knowledge training based on the actual conditions of the project, enabling them to learn comprehensively from theory to practice and further improve their technical skills. The project also requires establishing a corresponding assessment system to evaluate participating employees and reward outstanding performers, thereby motivating maintenance personnel and further enhancing their technical abilities.
Q: What are the operating procedures for a Rolling Threading Machine?
A: Operators must inspect and clean the machine tools every shift, performing routine maintenance to ensure they are neat, clean, lubricated, and safe.
(1) Keep the machine tool exterior neat, clean, and free of yellowing, oil stains, and rust. Keep machine tool parts and major accessories intact and clean.
(2) Keep the machine tool work area and foot pedals clean and tidy. Keep all guide rails and sliding surfaces clean and lubricated; check all guide rails, worktables, and sliding surfaces for damage.
(3) Ensure sufficient oil in all parts of the lubrication system, unobstructed oil passages, clearly visible oil level indicators (windows), and clean and complete lubrication tools. Check all oil reservoirs, lubrication points, and pipelines (including cooling system pipelines) for leaks.
(4) Ensure electrical, limit, and interlocking devices are safe and reliable.
(5) Perform equipment maintenance promptly as required and keep records. Fill out the machine time record monthly.
(6) Unauthorized alteration of equipment (including parts and accessories) is prohibited.
(7) Before starting work, check that all rotating parts of the machine tool are functioning properly, that the protective devices are intact, and that there are no foreign objects on the working surface. Lubricate all lubrication points. Operation can only proceed after confirming that there are no problems.
(8) Thread rollers must be securely installed. Adjusting or replacing rollers must be done while the machine is stopped. Do not reach into the machine bed to adjust the workpiece or touch the machine tool while it is running.
(9) When setting the tool, do not loosen or tighten any screws while the machine is running. Tighten the nuts after adjustment before starting work.
(10) The operator must concentrate and keep their hands away from the moving parts of the thread rolling machine to prevent injury.
Q: What is the current state of the thread rolling machine industry?
A: In recent years, with the rapid development of the manufacturing industry, thread rolling machines, as important equipment for precision machining, have received widespread attention. Many companies have begun to realize that advanced thread rolling machines not only improve production efficiency but also reduce production costs and enhance product quality. This shift has undoubtedly brought new opportunities to the industry.
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