Large capacity honing machine

The large capacity tube hones offer high reliability, flexibility, and a 3,500 cm3/hr stock removal rate for part lengths up to 9.14 m, ID's up to 610 mm. The HTG is the product of two years of market research, as well as innovative Sunnen engineering, and it reflects significant gains in machine control, part capacity, stroke velocity, spindle speed and power efficiency over Sunnen's popular GH-210 series tube hone. The standard HTG-10000 is capable of handling standard part lengths up to 9.14 m and weights up to 8,000 kg. The HTG's ID range is 50.8 to 610 mm, double that of previous generation machines, with an OD capacity of 26 inches 660.4 mm standard, and up to 1,219.2 mm as an option. The machine is ideal for instrument piping and down-hole equipment applications, such as pumps/motors and hangers, and large hydraulic cylinders like those found on offshore oil platform stabilizers. A new proportional load control hydraulic system enables maximum utilisation of hydraulic power, delivering power where needed during operation for maximum efficiency. The system can deliver up to 29.83 kW to the spindle and up to 13.42 kW to the tool stroking system, for metal removal rates of 3,500 cm3/hr when using superabrasives in steel. For increased speed and accuracy, the HTG uses a new precision hydraulic feed system that combines the high force of hydraulics with the finesse of a sophisticated control. This includes servo position control of the feed system actuator, electronic pressure control, closed loop feedback, and ability to operate both standard tooling as well as two-stage tooling. The machine features a 30.48 m/min maximum stroke velocity, 0-300 rpm spindle, and a tool feed force of up to 11,200 N. The new servo system on the feed axis provides increased accuracy, as well as improved maintenance, service and setups with no tuning required. Another upgrade is a next-generation two-stage hone head capable of roughing and finishing without changing abrasives. The two-stage hone head is available with conventional abrasives or superabrasives. The HTG is available in two standard model sizes – the HTG-4000 with 4 m stroke length and the 10 m stroke HTG-10000. Built-to-order machine sizes include 6, 8, 12, 14 m stroke lengths, while custom length designs can be quoted. To save floor space, the HTG's electrical panel is mounted with the hydraulic power unit. The power unit is designed for ease of maintenance with accessible components, an easy-to-clean tank, cleanable air filters on the oil heat exchanger, and oil temperature/level indicators on the machine and on the control. A new work base has an improved design sloped to the center of the machine for removal of honing "mud," and includes standard full-time coolant flush. This means operators spend less time shoveling out the base of the machine during high production runs. The HTG features a new easy-to-use Siemens PLC touch-screen control system with zero shutoff, feed pressure control, cross hatch angle calculator and a joy stick to allow the operator to move the honing tool over the stroke length. The standard chain vice fixture is taken to the next level with a new ease of movement on the machine rails for locating during set-ups, as well as improved ergonomics and adjustments.