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Brunswick Tooling is using a five-axis machining centre configuration based on one of Hurco’s three-axis machining centres fitted with a Kitagawa two-axis NC tilting rotary table from 1st Machine Tool Accessories. This arrangement has proved beneficial in the production of Brunswick’s products, which are essentially rotational components.

The rotary table used in this application was the TT182 hydraulic two-axis model with -35/110 tilt angle and 360° table rotation.

Indexing accuracies on the Kitagawa table of 20 and 60 seconds of arc respectively for table rotation and tilt, with four seconds of arc repeatability, ensure high-precision metal cutting when combined with the machining centre’s ±0.005mm linear positioning accuracy and ±0.0025mm repeatability.

1st Machine Tool Accessories offers a variety of Kitagawa rotary tables to boost the productivity of CNC machine tools by exploiting the benefits of one-hit machining.

Key benefits of product application

  • According to Paul Briggs, managing director at Brunswick Tooling, the attachment is so robust that machining performance is just as good as that of purpose-built five-axis machines.
  • A key factor in the purchase decision was the flexibility of being able to use the machine either in turn-mill mode or as a five-sided or five-axis machining centre.
  • Brunswick Tooling is able to clamp the rotary table in its vertical position and fit a tailstock to the left-hand side of the machine bed. In this way, the tools it manufactures can be positioned between centres and clamped securely for prismatic machining operations to be carried out, such as the milling of indexable insert pockets.
  • For certain jobs, the tailstock is removed and the Kitagawa table is inclined upwards to position the component at a compound angle for the three-axis machining of complex features on some tooling products. Both rotary axes are currently used in this way — indexed and clamped — but they could be interpolated with the linear axes in future, if the need arises.
  • A second identically equipped machine has been purchased following the success of this configuration.

1st Machine Tool Accessories

1st Machine Tool Accessories Ltd specialises in high quality workholding equipment and associated products from the world’s leading producers.

1st Machine Tool Accessories Ltd specialises in high quality workholding equipment and associated products from the world’s leading producers.

1st MTA:

·         provides technical assistance via trained representatives including site visits and demonstrations where possible;

·         is constantly expanding and updating the product range to give customers the best possible choice;

·         offers bespoke/customised solutions;

·         provides the easiest and most efficient way to order all your machine tools and accessories by phone, fax or on-line.

The product range includes:

·         Kitagawa:

o   Chucks: power, collet, manual, speciality and all accessories.

o   Cylinders: hydraulic and pneumatic.

o   NC Rotary Tables.

o   Vises: precision machine.

·         Fixturing and Clamping Parts.

·         Collets:

o   Varibore,

o   Spring,

o   Emergency

o   Pull back.

·         Chick Workholding: the leader in modern workholding for modern CNC machines.

·         Brighetti Reduction Bushes:

o   Slotted

o   Cylindrical

o   Conical

o   Elastic

o   Fixed by dowels.

·         OK Vise: low-profile clamping.

·         Mitee Bite: versatile, cost-effective clamping – fast and easy operation.

·         Cooljet High Pressure Coolant.

·         Magnetic Filtration

·         Bison:

o   Chucks: manual and power;

o   Hydraulic/pneumatic cylinders;

o   Precision machine and bench vises;

o   Rotary tables and indexing fixtures

·         Abbott Workholding:

o   Pie jaws;

o   Tooling columns.

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