How to apply double rod roller burnishing tool in the thin-walled tube processing?

The pipe fitting is required to have sufficient wall thickness when rolling with the roller burnishing tool. Its wall thickness should be based on the unilateral calculation, according to different material hardness to the wall thickness requirement also has the difference. The wall thickness of the steel parts can be thinner than 2mm, while the copper aluminum needs more than 3mm. If the wall is too thin, it will cause deformation of the workpiece, the force is uneven, and even the compressive stress will break the damage.

(figure 1)

Among RBT customers, some of them need to process thin stainless steel flow orifice plates (figure 1).

Because the thickness of the flow orifice plate is very thin and the machining rigidity is very poor, it is very difficult to meet the requirement of form tolerance and surface roughness by adopting conventional machining method. To this end, we adopt three kinds of double rod roller burnishing tools, which can solve the problem of insufficient rigidity.

What’s the processing principle of roller burnishing tools?

Schematic representation of roller burnishing process.

Schematic representation of burnishing process.

The roller burnishing tools works like a road roller flattening the uneven road.
Roller burnishing tool is to use very smooth roller rolling by processing the surface of the metal, the workpiece performance high extrusion convex parts to dips, so that the machining surface smooth as a mirror effect, this is a kind of plastic processing.
The surface roughness of workpiece is up from Ry1.6-3.2 um to Ry0.1-0.2 um, and improve the processing surface hardness, wear resistance, corrosion resistance, sealing, etc., to eliminate early wear, these have the advantage of machining cannot be replaced.
The rolling tool has a fine tuning device. The adjustment coefficient of each small grid is 0.0025mm, and the total adjustment range is 0.3mm-0.4mm. Therefore, the precision of the processed dimension is also improved accordingly.

The control method of roller burnishing tools

1. Measuring the burnishing tool’s diameter with micrometer.
2. Push the calibrated set to the handle and rotate it at the same time, adjust the diameter of the tool, reduce the left rotation, and increase the right rotation, each scale value is 0.0025mm.
3. When the diameter is adjusted, release the aluminum shell and automatically lock the diameter.
4. When machining blind holes and step holes, the bottom is about 0.5mm-1.0mm cannot be machined. The needle can lightly touch the bottom of the hole.

Processing equipment

We are roller burnishing tools suppliers. RBT roller burnishing tools are suitable for common drilling machine, lathe, boring machine and machining center.
The clamping forms of tools include: straight shank and Morse taper shank. It can also be made according to customer needs.

Our Roller Burnishing Tools are made using high-grade raw material, at the vendors’ end. Our product range is highly demanded in the market for its hassle-free work performance the users’ premises.

If you do not know how to choose the model of the burnishing tools, you can contact us. We have professional customer service staff to help you find the most suitable product.

Three types of RBT burnishing tools, buy RBT Roller Burnishing Tools

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Why do many people use roller burnishing tools to burnish?

Roller burnishing improves surface finish by removing scratches, tool marks and pits and induces beneficial compressive surface residual stresses. Consequently, corrosion performance is improved because corrosion products and residues cannot be entrapped. In this process known as low – plastic grinding, the rollers move only once on the surface, resulting in residual stresses and minimal plastic deformation. Internal cylindrical surfaces also are burnished by a similar process, called ballizing or ball burnishing. In this process, a smooth ball is pushed through the length of the hole.

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Benefits of RBT Roller Burnishing Tools

Roller burnishing is used to improve the mechanical properties of surfaces as well as their surface finish. It can be used alone or in combination with other processing techniques such as grinding, honing, and lapping. The equipment can be installed on various CNC machine tools to improve productivity and consistency. All types of metals can be roller burnished.

Roller burnishing is typically used on hydraulic system components, seals, valves, spindles, and fillets on shafts.

Multi-roller burnishing tool: Impressive advantages

Hardened boundary layers
Increased fatigue strength
Greater surface resistance to wearing and corrosion
Shifting of the material fatigue Limits
Equire very short machining times
Realize outstanding surface qualities
Reduction of coefficients of sliding friction
Environmental friendliness due to a lack of waste products

Three types of RBT burnishing tools

Roller burnishing has long been used on a wide variety of automotive and heavy equipment components (construction, agricultural, mining and so on), including piston and connecting rod bores, brake system components, transmission parts and torque converter hubs.

Burnishing tools are now widely used in non-automotive applications to achieve a variety of benefits: to create a better, more durable seal surface; Increased wear life; Reduce friction and noise level of running parts; And enhance the appearance; to improve wear life; to reduce friction and noise levels in running parts; and to enhance cosmetic appearance. Examples include valves, pistons for hydraulic or pneumatic cylinders, lawn and garden equipment components, shafts for pumps, shafts running in bushings, bearing bores, and plumbing fixtures.

RBT Roller Burnishing Tools are used for the aim of burnishing the cylindrical holes that have an open and closed end. The tools provide as well as surface hardness and calibration (measurement accuracy) beside of burnishing. According to the process type, there are three types of RBT burnishing tools:

RBT roller burnishing tool applications

Blind Hole machine-feeding

These burnishing tools process stepped or fully closed holes up to end. While the tools process the workpiece, the machine provides feeding speed which is needed.

Through Hole machine-feeding

These burnishing tools process the holes with open ends. The machine provides the required feed speed when the tool is working on the workpiece.The tool or the workpiece can be turned with the speed of max. 250 m/min. The feeding speed of the machine can range from 0,05 mm/rev. to 0,3 mm/rev. for per roller.

Through Hole self-feeding

These burnishing tools process the holes with open ends. The tools provide own feeding speed which is needed while it is processing the workpiece. Feeding occurs free from the machine.

Why choose RBT?

Roller Burnishing Tools Manufacturer, Roller Burnishing Tools Exporter, Roller Burnishing Tools Supplier

We have emerged as a highly reliable Manufacturer, Exporter and Supplier of Roller Burnishing Tools in China. We can offered to the customers is a high quality range of Roller Burnishing Tools as per their specific requirements.

Our Roller Burnishing Tools are made using high-grade raw material, at the vendors’ end. Our product range is highly demanded in the market for its hassle-free work performance the users’ premises.