STR8A-3.5-20 MULTI-ROLLER TOOL FOR ROLLING OUT HOLES ON LATHES

The multi-roller knurling tool uses the principle of plastic surface deformation of metal at normal temperature to smooth the surface of the workpiece.
of metal at normal temperature to make the surface of the workpiece smooth,

change the surface structure, mechanical properties and tolerance.
Tooling is a method of tool-less machining,
which utilizes the principle of mechanical extrusion to produce a smooth, mirror-like surface of metal.
A certain amount of pressure is applied to the surface of the workpiece by a roller-rolling tool,

so that plastic flow of metal occurs in the surface layer.

It fills the existing depressions, and reduces the roughness of the surface of the workpiece.

Due to the plastic deformation of the metal surface, the surface microstructure is hardened,

the grain is refined to form a compact fibrous structure, and a compressive stress layer is formed.
The hardness and strength, wear resistance, corrosion resistance and stability of the workpiece surface are improved.
This method can be used for both surface deburring and peening,

which cannot be achieved by grinding and turning.

The maximum hardness of the workpiece is 40 HRC

Roller rolling hardens the surface in a short time, while improving surface roughness and increasing part life due to compressive residual stresses. The diameter of the workpiece is changed only by the size of the roller indentations into the workpiece surface. To ensure the required machining tolerances, it is important to maintain the allowance prior to the machining process to account for the diameter change. The accuracy of the prior machining process directly affects the size after machining by turning. The diameter variation depends on the material, hardness and rollers. Two to three experimental passes should be made to obtain the best machining parameters before inline machining a batch of parts.

The blind hole roller roughing machine can smooth both through and blind holes.

Machinable hole diameters 6-200mm is the standard tool range. Larger diameters can be produced to order.

- Low polishing costs
- Pre-machining and knurling polishing take place on one machine.

- Reduces the cost of an additional machine and reduces labor and time required for re-setting, clamping and re-basing of the workpiece.

- One set-up, one pass
- Very short machining times
- No chips or other waste

- Low energy consumption

Examples of products with mirror surface requirements:
- Oil pumps

- vacuum pumps

- oil pumps, gate valve and valve parts
- bearing seat
- hydraulic cylinders

- sleeves

- Bushings

- Pipes

- cylindrical housings

- hydrovalves

- rings

- Oil pumps

- vacuum pumps

- oil pumps, slide and valve parts
- bearing seat
- hydraulic cylinders

- sleeves

- Bushings

- Pipes

- cylindrical housings

- hydrovalves

Tools and accessories for machine tools and machines for tool-free metal working.

Tools and accessories for machine tools and machines for chipless metal working. Metal surface superfinish.

Um Oberflächen zu Verdichten müssen diese rolliert bzw. glattgewalzt werden. Je nach Anwendung müssen hierbei große Oberflächen oder nur kleinste Bohrungen bearbeitet werden. Für jede Variante bieten wir das passende Werkzeug an.

Roller Burnishng Tool Introduction

Roller burnishing tool can use the plastic deformation of metal at normal temperature to make the surface of workpiece smooth, change the surface structure, mechanical properties, shape and size. Elephants. The tool is a kind of mechanical non-cutting plastic machining method which uses the principle of mechanical extrusion to obtain a smooth mirror-like metal surface.
      It is a kind of pressure finishing, which use the cold plastic characteristics of metal in the normal temperature state, and exerts certain pressure on the surface of the workpiece by roller burnishing tool, so that the surface metal of the workpiece produces plastic flow, fills in the original residual low-pit trough, and reduces the roughness of the workpiece surface. Due to the plastic deformation of the rolled surface metal, the surface microstructure is cold hardened and the grain becomes fine, forming a compact fibrous structure, and forming a residual stress layer. The hardness and strength are improved, thus improving the wear resistance, corrosion resistance and compatibility of the workpiece surface. Roller burnishing is a kind of non-cutting plastic processing method, so this method can achieve both finishing and strengthening purposes, which can not be achieved by grinding and turning.

For roller burnishing operations, the surface is hardened in a short time while the surface roughness is improved ,

and a durable surface is obtained due to compressive residual stresses.

The diameter change of the workpiece is only the amount of pressing on the part surface.

In order to ensure required machining tolerances, it is important to keep the allowance in front of the processes,taking into account the variation of the diameter.

The accuracy of the previous process has a direct effecting on the size after processing.

The change of the diameter varies with the material, hardness and roll.

2-3 experiments were performed to obtain the best machining parameters before continuous machining.

Blind hole roller burnishing tool,it can burnish the throught hole and blind hole products.Hole  diameter 8-200mm is the standard specification.,acceptance of non-standard customization.