FOR SALE USED GEAR CUTTING MACHINE BRAND MODEL TOS OHO 20. WEIGHT 1800KG. MIN DIAMETER 14 MAX 200MM MAXIMUM ALLOWABLE PIECE WEIGHT 10 KG STROKES PER MINUTE 200-630.

Technical Description of the TOS OHO 20 Gear Hobbing Machine

The TOS OHO 20 gear hobbing machine is a machine tool specialized in producing gear teeth, particularly internal and rack and pinion gears. Known for its robustness and precision, this machine is designed to machine small and medium-sized workpieces. Its weight of 1800 kg makes it stable and suitable for precise machining.

Technical Characteristics

• Net weight : 1800 kg
• Working Diameter : Minimum diameter 14 mm, maximum diameter 200 mm
• Maximum Allowable Piece Weight : 10 kg
• Rounds per Minute : Variable from 200 to 630 rounds/minute

What is a TOS OHO 20 Gear Hobbing Machine?

The TOS OHO 20 is a gear shaping machine, a type of machine tool primarily used for producing internal teeth on cylindrical workpieces. Thanks to its robust construction and mechanical control system, it is ideal for the mass production of highly precise geared components.

How to use it

The TOS OHO 20 gear hobbing machine is used for the production of internal gears. The machining process involves a tool (hob or cutter) that cuts along the axis of the workpiece. The workpiece is clamped to a spindle, while the tool performs the hobbing movement in a controlled manner. The machine is adjustable to vary the number of strokes per minute, allowing the machining speed to be adapted to the type of material and size of the workpiece.

Materials Used

This gear hobbing machine is designed to work mainly with metallic materials such as:

• Steel : For strong and long-lasting gears.
• Cast Iron : Used for components requiring good wear resistance.
• Aluminum alloys : For applications requiring low weight with good mechanical strength.

Main Industrial Sectors

The TOS OHO 20 finds application in various industrial sectors, including:

• Automotive industry : Production of internal gears for transmissions.
• Precision engineering industry : Production of components for precision instruments and machinery.
• Tool Industry : Production of gears for power tools and machinery.

Calculations and Formulas to Optimize Use

To optimize the use of the TOS OHO 20 gear hobbing machine, it is essential to take into account various processing parameters:

• Tooth Modulus (m) : m=dzm = \frac{d}{z} $m$ $=$ z d ​, dd $d$ is the pitch diameter of the workpiece and zz $z$ is the number of teeth.
• Cutting Speed ​​(V_c) : Vc=π⋅D⋅nV_c = \pi \cdot D \cdot n $V$ c ​= $\pi$ $\cdot$ $D$ $\cdot$ $n$ , where DD $D$ is the tool diameter and nn $n$ is the rotational speed in revolutions per minute.
• Strokes Per Minute (CPM) : Adjusting the strokes per minute (from 200 to 630) is crucial to adapt the machining to the type of material and production specifications, influencing the surface finish and accuracy of the part.

Similar Types of Gear Cutting Machines

The TOS OHO 20 falls into the category of gear shaping machines. Other types of gear shaping machines include:

• Hobbing machines : For external gears.
• Knife gear cutters : For special gears.
• CNC gear cutting machines : With numerical control for highly precise production.

Alternatives to TOS OHO 20

Alternatives to a shaping machine like the TOS OHO 20 may include:

• Milling machines with accessories for gears : For small production runs or gears of unconventional shapes.
• Electrical discharge machining : For difficult-to-machine materials or complex shapes.
• Stamping : For the mass production of simple gears.

Why You Should Buy a Used TOS OHO 20

Buying a used TOS OHO 20 gear hobbing machine is advantageous for several reasons:

• Robustness and Longevity : TOS machines are known for their solid construction and long service life. Even after years of use, they maintain high performance if properly maintained.
• Reduced Cost : A used model offers significant savings compared to purchasing a new machine, while still maintaining high precision and reliability.
• Reliability : The TOS OHO 20 has been designed for continuous production and can withstand intense work cycles, making it an excellent choice even if purchased used.

In summary, the TOS OHO 20 gear hobbing machine represents an excellent choice for those looking for a reliable and precise machine for the production of internal gears, with the economic advantage of a used purchase that does not compromise the quality of the workmanship.