HoriMill RF-CNC DL

SCHIESS BRIGHTON specializes in the design and construction of the following types of very large machine tools:

  • Single Column Vertical Turning and Boring Mills (SC-VBM)

  • Double Column Vertical Turning and Boring Mills (DC-VBM)

  • Gantry Milling and or Turning Centers (GanMill)

  • Horizontal Boring Mills (HoriMill)

  • CNC Gear Hobbing Machines (RF-CNC)

  • Heavy Duty Horizontal Lathe (DL)

Incorporating the latest state-of-the-art technologies and design methods, all SCHIESS BRIGHTON machines exhibit uniformly excellent accuracy, reliability and productivity characteristics. The new machines are designed based on a system of common modular sub-assemblies. The advantages of the design features listed in this catalogue apply to all SCHIESS BRIGHTON machines. 

The customer benefits from this modular design concept are: 

    Service procedures are similar in all SCHIESS BRIGHTON machines;
    A commonality of spare parts can be used for different machines;
    Attachments are interchangeable between several machines types.

Features & Advantages

All major structures such as beds, columns, cross rails, table bases and tables, are made of very rigid and well ribbed castings or fabrications which are designed to absorb vibration and resist high bending and torsional forces. These are pre-conditions for high accuracy and high static and dynamic stiffness.

All linear and rotary guide ways use hydrostatic way bearings and are therefore absolutely free of wear thus guaranteeing that the initial accuracy remains constant throughout the lifetime of the machine. Hydrostatics provide excellent damping characteristics which translates into high surface finish quality in the work piece, and the lack of friction between the sliding members results in high positioning and contouring accuracy.

The versatility of the machines is due to a built-in milling spindle in the ram, which in connection with the built-in C-axis and the Master-Head design principle (namely exchangeable boring and milling heads for different applications) allow multiple axis machining.

High power turning and milling drives allow heavy duty machining by fully utilizing modern cutting tool performance.

Rotary tables and turn tables have cast iron tops and load capacities up to 1000 tons. The drive mechanism is an advanced design whereby drive motors are connected in tandem to double pinions to either drive the table gear in combination to achieve high rotational speed and torque, or in opposition so as to eliminate backlash for rotary milling operations in the C- or B-axes. Actual table position is always measured at the table center by direct rotary scales such as made by Heidenhain. The table bearings are hydrostatic with individual valves controlling the precise flow required at each pocket. These bearings are located at the periphery of the tables thus allowing large work piece weights and off center loads. Tapered roller bearings at the table centers prevent run out errors.

All feed drive systems, linear and circular are electronically preloaded and equipped with direct measuring systems made by Heidenhain. Axes with less than 6 m of travel are equipped with re-circulating ball screws and preloaded double nuts.

Because many large machines of the former SCHIESS company Dusseldorf still perform well even after many decades in different fields of application, numerous proven standard and special attachments are available in order to increase the productivity of machining large components in only one or two set ups. Complex machines with different attachments could have as many as 12 CNC-axes.

In order to increase and/or maintain accuracies under different static or ambient thermal conditions, mechanical and electronic compensation systems are built-in as standard features.

Rams may be equipped, optionally, with a built-in C-axis. This consists of a sleeve around the spindle which is driven by a servo motor mounted coaxially with the main spindle motor within the ram. This feature allows the indexing or continuous feeding of various accessories mounted on the face of the ram, in the C-axis.

The boring and milling spindle is directly supported by high precision, pre-loaded spindle bearings, which are free of wear even when subjected to high torque and high revolution forces. These bearings provide high circularity for boring and excellent milling surface finishes.