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The new SH-4000P horizontal machining center from Tongtai was developed for mass production lines. The new compact machine has a 35 percent smaller footprint than the previous model, allowing for maximum shop floor space utilization. At only 69” wide, floor space is minimized.
Sold and serviced by Absolute Machine Tools Inc., the Tongtai SH-4000P horizontal machining center is the latest generation, low-cost, state-of-the-art high speed machining center. The compact size consumes very little valuable floor space while the fast speed will deliver more parts per hour than competitive machines costing thousands more.
The machine is a XY traveling column type design where the pallet moves in Z. The APC unit, located in front of the machine, provides easy access and slashes idle time. The APC is a rotary type pallet changer and it exchanges the pallets in only 5.9 seconds. For pallet rotation in the machining envelope, a full contouring “B” axis precisely indexes the pallet every 0.001 degree and a hydraulic clamping mechanism is used to clamp the pallet in place for excellent repeatability. The B axis is high speed, with 90-degree index time of 0.5 seconds.
The SH-4000P features an ultrarigid Meehanite cast iron frame with an advanced three-point leveling system. The eco-friendly LHL/LubeUSA grease lubrication system is standard for ways and ballscrews – no coolant contamination and no waste oil. The 40mm (1.57”) diameter ballscrews are class 3 with a double nut preloaded and pretensioned design allowing a blazing rapid traverse rate of 2,362 ipm. Furthermore, high-speed acceleration drastically reduces non-cut time (X,Y, Z acc/dec of 1.0G). The ABS (Absolute Pulse Coder) servo system does not require zero return. The machine can be started anytime from any position, saving non-productive time. A standard rear discharge chip removal system includes a center trough design with high volume chip wash for efficient chip removal. A combination dual level caterpillar-type conveyor with fines separator is standard and is suitable for virtually any types of chips/material.
At the center of the machine is our high power integral spindle with 15,000 rpm and spindle acceleration from 0-7000 in just 0.48 seconds and 0-15000 in only 1.9 seconds. Deceleration from 12,000 rpm to stop is only 0.8 seconds. Our powerful spindle, which switches windings on the fly, produces 50 hp peak (10 min. rating), 35 hp in high and 25 hp in low while producing 184 ft./lbs. of peak torque at only 980 rpm. To enhance milling capabilities, a Big Plus dual contact spindle is standard. Air/oil mist is used for spindle bearing lubrication to increase spindle life.
The standard 60-station automatic toolchanger provides ultra fast tool selection. Tool change time is only 1.4 seconds tool to tool due to the use of the patented Sankyo RollerDrive gearbox for the arm mechanism. Average chip to chip time is only 2.6 seconds. The ATC system is a random style system.
The FANUC OiM-F conversational control is standard to provide reliable state-of-the-art controllers and the latest in servo and spindle technology. The OiM-F is capable of handling the most demanding high speed machining applications and is available with a full complement of high-speed machining options for mold detail and electrode machining.
Related Glossary Terms
- automatic toolchanger
automatic toolchanger
Mechanism typically included in a machining center that, on the appropriate command, removes one cutting tool from the spindle nose and replaces it with another. The changer restores the used tool to the magazine and selects and withdraws the next desired tool from the storage magazine. The changer is controlled by a set of prerecorded/predetermined instructions associated with the part(s) to be produced.
- coolant
coolant
Fluid that reduces temperature buildup at the tool/workpiece interface during machining. Normally takes the form of a liquid such as soluble or chemical mixtures (semisynthetic, synthetic) but can be pressurized air or other gas. Because of water’s ability to absorb great quantities of heat, it is widely used as a coolant and vehicle for various cutting compounds, with the water-to-compound ratio varying with the machining task. See cutting fluid; semisynthetic cutting fluid; soluble-oil cutting fluid; synthetic cutting fluid.
- gang cutting ( milling)
gang cutting ( milling)
Machining with several cutters mounted on a single arbor, generally for simultaneous cutting.
- inches per minute ( ipm)
inches per minute ( ipm)
Value that refers to how far the workpiece or cutter advances linearly in 1 minute, defined as: ipm = ipt 5 number of effective teeth 5 rpm. Also known as the table feed or machine feed.
- machining center
machining center
CNC machine tool capable of drilling, reaming, tapping, milling and boring. Normally comes with an automatic toolchanger. See automatic toolchanger.
- milling
milling
Machining operation in which metal or other material is removed by applying power to a rotating cutter. In vertical milling, the cutting tool is mounted vertically on the spindle. In horizontal milling, the cutting tool is mounted horizontally, either directly on the spindle or on an arbor. Horizontal milling is further broken down into conventional milling, where the cutter rotates opposite the direction of feed, or “up” into the workpiece; and climb milling, where the cutter rotates in the direction of feed, or “down” into the workpiece. Milling operations include plane or surface milling, endmilling, facemilling, angle milling, form milling and profiling.
- rapid traverse
rapid traverse
Movement on a CNC mill or lathe that is from point to point at full speed but, usually, without linear interpolation.
- toolchanger
toolchanger
Carriage or drum attached to a machining center that holds tools until needed; when a tool is needed, the toolchanger inserts the tool into the machine spindle. See automatic toolchanger.
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