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Five Taiwan patents. The key module of cutting machine and vastly used in the work piece cutting of aerospace and car industry, and mold making area. Quality above the world level.
1. Precise indexing.
Automatic indexing for A and C axis. Specifically produced using high-precision and small-backlash gear, decoder, and optimal software compensation technique to attain an indexing precision of 1 degree for A and C axes.
2. Precise positioning of A and C axes: 3 seconds
Using a Sigma-designed software with friendly HMI and compensation function.
3 High clamping force.
Adopting a big gear disk of 320 mm outer diameter to produce large contact area, and hence creating a large clamping force of 6000Kgf.
4. Linear positioning accuracy for Y and Z axis：0.05mm.
Adopting one rail at the top face and stage-type orthogonal two rails in the front face of the Y axis attaining stable moving, and two rails for both lateral sides of the Z axis attaining gravidity driving.
5. Superior in high speed cutting and heavy cutting: Adopting two-stage star-type gear box and direct-connected spindle, finished with precise assembly to attain a stable high torque of 750 N-m in low speed and a maximal rotational speed of 10000 rpm.
6. Compact ad light
Using the spindle servo-motor to drive the index head, not an individual additional servo-motor. As such, it has the advantage of low weight and compact shape, and low production cost. The dimension of the product is 656 mm long and 494 mm in diameter.
7. High rigid and reliable heavy cutting
Design of short distance between transmission and spindle centerlines. Using precise orthogonal bevel gears to attain stable transmission with a maximal torque of 750N-m and heavy cutting of 600cc/min material remove rate.
8. Automatic head change function
With the control of computer, the index head may be automatically transported into the milling holder or stored in the special designed head storage house.
About SIGMA CNC TECHNOLOGY MACHINERY CO., LTD.
SIGMA holds the fundamental concept of “Expertise, Innovation, Practice.” Constant efforts, renovations are made to meet ever changing market challenges. With scientific management, SIGMA strives for high efficiency production, stable quality control, best sales and after-service. That is why SIGMA is able to reap customers’ praise, reliance and confidence. We introduce one new product every year, making outstanding contributions to machine tools industry and raising our own technical levels in the brand new high tech age. “Customers’ demands motivate us to make constant progress, serving our customers perfectly is our ultimate purpose.” This is the main principle of SIGMA’s R&D and manufacturing. To offer customers with the most efficient machine tools and perfect after-services are our eventual target and purpose.
SIGMA holds the basic idea of “Expertise, Innovation, Practice.” Expertise: Focusing on the production of tool machinery, to become the best manufacturer of CNC double-column machine tools. Innovation: Constantly inventing high-level tool machinery and their key components to keep competitive power and profit. Practice: Noticing every manufacture detail, building the highest quality machine. The text of CIS of SIGMA Co. Ltd was selected as “SIGMA” which means “summation” in mathematical meaning. This implies the continuously growing and becoming strong. The cultivation of “SIGMA” is: S: Speciality I: Innovation G: Great M: Machine A: Activist The three-color ring (orange, green, and blue) means the company management includes the vision is as big as the blue sky, emphasizing the green environment protection, progressing steadily (orange). Overall, the wish of “SIGMA” is “constantly growing and outstanding.”