Hebei Xinggong Machinery Manufacturing Co., Ltd.

News Updates
News Updates

Building the Xinggong brand through quality.

Technical Documentation

Industry News

Company News

Cold Rolling Process for Thread Rolling Machines

Release Date:

2022-01-05 00:00

Source:

Thread-rolling machines are primarily used for cold roll‑forming. Cold roll‑forming is a chip‑free manufacturing process that employs rolling tools to achieve plastic deformation through localized compression. The rolled metal fibers remain continuous, and the radial compressive forces generated during rolling effectively enhance the workpiece’s surface finish, hardness, and strength. Compared with chip‑removal processes, this method can increase productivity by several times, or even dozens of times, while also reducing material consumption and facilitating automated production.

This machine tool can, within its rolling range and under cold‑working conditions, perform rolling, straightening, burnishing, diameter reduction, and various forming‑roll operations on workpieces, including standard threads, helical threads, straight threads, helical gears, trapezoidal threads, and module threads. The machine is equipped with a safe and reliable electro‑hydraulic actuation and control system. It allows the user to select between manual and automatic operating cycles for rolling operations (with rollers supplied by the user as needed).

Rolling tools are highly specialized and suitable for workpieces with a material hardness not exceeding HRC 25—ideally below HRC 20—where the elongation must be greater than 15% and the tensile strength less than 60 kgf/mm². For various carbon steels, alloy steels, and nonferrous metals, as material hardness increases, the service life of the rolling tool declines sharply.

Methods for addressing abnormal noises emitted by thread-rolling machines during operation

What should you do if your thread‑rolling machine makes unusual noises during operation? Don’t worry—here’s a solution: Under normal operating conditions, the machine may occasionally produce abnormal sounds. The primary cause is usually excessively high oil temperature. Other possible factors include the return line being above the oil level, contamination of the oil and tank, or an undersized return line. These issues are generally not serious; we recommend thoroughly cleaning the machine’s hydraulic system and replacing the oil to resolve the problem.

What precautions should be taken before operating a screw thread rolling machine? Please see the following instructions:

1. The diameter-reducing machine must be properly grounded, with a grounding conductor of no less than 4 mm² copper flexible wire. Do not connect to a supply voltage exceeding the specified range; do not plug or unplug connectors while energized; and do not use a megohmmeter to test the control circuit, as this may damage the components.

2. When inserting or removing connectors, do not pull on the wires or cables to prevent solder joints from becoming detached.

3. Keep the switch and encoder away from impacts by hard objects.

4. Do not strike or impact the display unit with sharp objects.

*Note: Please ensure that all information provided is accurate and keep your contact details up to date. We will get in touch with you as soon as possible.

Submit Message

Previous page

The working principle of a thread-rolling machine

None

Next page

Related News

Three Major Reasons Why a Thread Rolling Machine Cannot Produce Threads

As everyone knows, thread‑rolling machines are widely used in many enterprises. The more commonly a machine is employed, the more thoroughly we should understand it—only then can we promptly diagnose and resolve any issues that arise.

Tips for Installing and Commissioning a Three-Axis Thread Rolling Machine

Thread-rolling is a versatile cold-extrusion forming machine tool. Within its specified rolling force range, it can perform thread rolling, straight‑thread rolling, and helical‑thread rolling on workpieces in the cold state. It is an advanced non‑cutting manufacturing process that effectively enhances both the internal and surface quality of the workpiece.

What exactly are the differences between two-axis and three-axis thread‑rolling machines?

When it comes to thread‑rolling machines, most people are familiar with them. But did you know that these machines come in two‑axis and three‑axis configurations? Today, let us explain the fundamental differences between these two types—both of which are, after all, thread‑rolling machines.