Centerless grinder JHC - 18 s

The key and centerless grinding machine 18

We are the key and Taiwan centerless grinding machine (JAINNHER) designated sales and maintenance services. Our centerless grinding machine to make the workpiece roundness can be achieved 0.15 within the UN, surface roughness Ra0.02 um, straightness within 2 um in 300 mm, shaft 2 um size within plus or minus tolerance within 1.5 um. Our centerless grinder strong stability, high efficiency, low noise.

Model: JHC - 18

The main motor power: 20 HP (kw)

Delivery date: within 7 days of shipment

Biggest grinding size: 100 (mm)

Product description: high precision CNC CNC centerless grinder, the adjustment of the computer numerical control machine is heavy wheels adopt servo motor directly to wei, the standard machine adopt ball bearings, precision fine-tuning. Automatic grinding wheel and adjust wheel dressing, accurate automatic compensation, automatic return, automatic measurement and variable speed adjustment easily.

1. The body

Is made of advanced casting FC - 30 after normalizing heat treatment, low frequency furnace, resin sand casting, nan to ensure that the body stability, solid type, good wear resistance.

2. Static pressure type spindle

High precision hydrostatic bearing, the use of precision grinding of the hydrostatic design, in addition to sharply reduce the traditional dynamic pressure bearing temperature rise arising due to friction and deformation, the precision design of static pressure point, can effectively control the balance of pressure difference, which can increase the cutting force to heavy cutting, the advantage of high precision, high life. High rigidity by using hydrostatic bearing spindle is designed, with a high pressure oil film bearing heavy load and heavy cutting, can effectively reduce the abrasion and maintain operation of spindle is round. Precision spindle is made of SNCM - 210 h and after carburizing heat treatment, surface hardness can reach above HRC60, to enhance the torsion.

3. The floating spindle oil film

Is made of SNCM - 220 h after carburizing heat treatment, with computer control cryogenic treatment, the surface hardness more than HRC62, core conditioning HRC25 ~ 30, spindle under torsion is strong, good accuracy, high service life, the use of KJ - 4 metal bearing, three point dynamic pressure oil film system, adopting hydraulic floating spindle, spindle contact less, low temperature rise, make the machine at any time to maintain a consistent stability and accuracy. Good cooling cycle effect, high precision, long service life.

4 wheel drive system

Wheel spindle motors use Japanese servo motor, speed control 10 ~ 250 RPM without digital set, can be adjusted to the best linear velocity, when the idler pulley diameter changes can still keep the same linear velocity, grinding out the best products. Link bridge and the spindle motor for an organic whole, motor will follow when carrier tilt, completely ruled out the pulley and belt parallel and reverse.

5. Spindle oil circulation system

Spindle automatic lubrication and oil pressure dressing device for the same pump, external fuel tank, clean the oil change is convenient, the oil in the cycle of two oil screen filter and equipped with a pressure controller, ensure the life of the spindle.

Sliding table 6.

Glide with double "V" slippery course and wedge guard rails, sliding smooth and stable operation. At the same time can avoid liquid mud invasion. On a skateboard dove shape slot structure, and there is plus or minus 5 ° around the rotation function. Upper and lower feed with fine-tuning feed gear at the same time, feed fine-tuning can reach 0.001 mm, easy to use, and fully improve the operation accuracy.

7. Dresser

Use the advanced iron FC - 30, after heat treatment, precision grinding and shovel flower. Hydraulic drive, no period of variable speed, smooth finishing, and the emergency handle for a rainy day. When doing by grinding, can according to the nature of work and need to adjust the guide wheel dressing holder (the seat can be plus or minus 5 ° rotation), work content and have better adjustment to lose interface, make our product really straight degree and surface accuracy relative increase.

8. Grinding accuracy

? Workpiece: Ø 2 x 20

? Metal: SUJ 2 -

? Hardness: the HRC - 62

? Grinding wheel WA 1000 #

? Machine: JHC - 18

The CUT OFF = 0.25 mm

TRAVERSING LENGTH = 1.0 mm

MAG = 10000

Ra = 0.02 m

RMAx = 0.28 m

Rz = 0.24 m

The RMS = 0.02 m

Rt = 0.22 m

Rtm = 0.20 m

9. Your work style

JHC - 18

JHC - 18 s JHC - 18 h

JHC - 18 - a

JHC - 18 as JHC - 18 ah

JHC - 18 b

JHC - 18 bs JHC - 18 bh

Standard diameter bench work

Ø 1 ~ 50 mm Ø

Special work table diameter

Ø 40 ~ 100 mm Ø

Grinding wheel size (diameter x width x inside)

455 x 205 x Ø Ø 228.6

455 x 255 x Ø Ø 228.6

455 x 305 x Ø Ø 228.6

Wheel size (diameter x width x inside)

255 x 205 x Ø Ø 111.2

255 x 255 x Ø Ø 111.2

255 x 305 x Ø Ø 111.2

Grinding wheel rotation speed

1500 R.P.M

Wheel rotation speed

13-316 R.P.M

(10)

10-250 R.P.M

No period of variable speed

13-316 R.P.M

(10)

10-250 R.P.M

No period of variable speed

13-316 R.P.M

(10)

10-250 R.P.M

No period of variable speed

Grinding wheel drive motor

15 HP

15 HP

20 HP

Wheel drive motor

2 HP

4 HP servo motor

2 HP

4 HP servo motor

2 HP

5 HP servo motor

Hydraulic pump drive motor

1 HP

Cooling pump drive motor

A quarter of the HP

1/2 HP

Wheel feed hand wheel

Every (Rev) each score 0.05 mm to 3.5 mm (Gra)

Idler pulley fine-tuning hand wheel

Each turn 0.1 mm each score (Rev) 0.001 mm (Gra)

Table feed hand wheel

Every turn 9 mm (Rev) score of 0.05 mm (Gra)

The workbench fine-tuning hand wheel

Every (Rev) each score 0.001 mm to 0.2 mm (Gra)

Trim feed hand wheel

2 mm per turn (Rev) each score 0.01 mm (Gra)

Wheel Angle

+ 5 ° ~ 3 °

Wheel rotation Angle

Plus or minus 5 °

Mechanical size (L x W x H)

2300 x 2000 x 1530 mm

The net weight/gross weight

2800 KGS / 3100 KGS

2900 KGS / 3200 KGS

3000 KGS / 3300 KGS

Packing size (L x W x H)

3200 x 1400 x 1900 mm