Acstar | 宏旺精密機械有限公司

A6+

CNC Hob Sharpening Machine

The A6/A6+ CNC Hob Sharpening Machines from ACSTAR are developed with ACSTAR’s extensive experience in cutting tool machining equipment in combination with the latest technology. Featuring advanced computer control, the series of machine are high precision, versatile grinding machines with 5 axes control and 4 axes simultaneous control. These machines are applicable for sharpening hobs with straight and spiral flutes. In addition, upon customer’s requirement, these machines are available to design with an additional complicated part grinding function for sharpening the cutting edge of the slotting hob. The models A6 /A6+ employ HSK interchangeable grinding wheel shank that helps to reduce wheel change time during machining, resulting in a higher production efficiency and increase of customer’s product development competition capabilities. As such, ACSTAR A6/A6+series is your best choice in upgrading production competitiveness and product development.

INQUIRY

Wheel Head

- The wheel head employs a built-in type wheel spindle, providing maximum speed of up to 10,000 rpm.
- Inserted type spindle design not only saves space but also increases spindle rigidity.
- Accommodates CBN and conventional grinding sheels.

Spindle Head

- Employs high precision angular contact roller bearing for resisting axial and radial loads.
- The spindle head (C-axis) is driven by a servo motor allowing hob to position accurately.
- Employs high precision worm gear set. (Japanese made)

Manual Tailstock

The tailstock quil movement is manually operated.
Oil-immersed lubrication ensures smooth and durable sliding.
Quill pressure can be adjusted by a regulation knob.

Features

This machine is suitable for grinding Hob cutters and Spur Gear Shaper cutters.
Able to use conventional grinding wheels and CBN or diamond grinding wheels for efficient grinding or sharpening on HSS and Tungsten Carbide Hobs.
The machining data can be directly input by touching screen, and full control settings can be realized for automatic operation.
After settings such as rough grinding, fine grinding and grinding strokes enable high-efficiency as well as high-precision sharpening of the cutter edge and a drastic reduction in grinding time.
Since the indexing axis and the feed axis are both controlled by servo motors, preparations for processing such as cumbersome gear exchange are eliminated.
Graphical dialogue operation software, easy to learn.
AA grade hob accuracy can be achieved with appropriate parameter settings.
10,000 rpm built-in high-speed grinding wheel spindle.
4 Axis SYNTEC controller included TFT touch screen.
Compact structure saves floor space.
Use a fully enclosed splash guard and oil mist collector to prevent dust and mist form splashing.

Error of hobs and effect of the hobbed gears

Correct Cutting Face

Cutting Lance Profile

Plus Rake Angle

Index Error

Minus Rake Angle

MODEL	A6+
Capacity
Number of Axis	5 Axes
Max. workpiece diameter / length	250mm/300L
Max. number of index	1-99
Allowable spiral lead value	1000-∞mm
Max. Lead angle	±30°
Max. Gash depth	40mm
Grinding Wheels
Type of Grinding Wheels	傳統砂輪/CBN/SDC
Grinding wheel diameter	Ø250mm
Maximum grinding speed	35m/s
Grinding Wheel Spingdle Head
Rotation angle	±30°
Max. Rotation Speed	10000rpm
Motor Power	15KW
Interface of grinding wheel spindle	HSK-A63
Worktable
(Z Axis)Work table stoke length	670mm
Workpiece center high	160mm
Spindle hole taper	MT4
Wheel spindle and workpiece cneter distance	600mm
Electrical Power
Total power consumption	20KVA
CNC System	新代SYNTEC
Machine Layout
Machine Size	W2700xD1800xH2100
Machine weight	約5200kg

Standard Equipment ：

Hob Mandrel
Oil mist Collector
Cooling system for spindle
Grinding fluid filtration equipment

PRODUCT

A6+