Stable running
without noise can be achieved because of adopting screw pump in
hydraulic sysdem.
High rotating
precision and strong rigidity can be obtained by sleeve-type
whole-tile moving hydraulic bare shaft system on the spindle of
wheel head.
Slideway is
covered by the plastic so it can gain slow speed running and high
immunity to vibration.
The machine has
high precision, reasonable integral layout, beautiful shape.
Centeralized and imaginary operating lever are easy and safe for
operating.
PTBMB
(semi-automatic) grinding machine can perform semi-automatic preci-sion cutting, longitudinal grinding to make high precision
parts by using limited stroke or controlled by process gauge in
small batch or mass production.
PTBMB
(semi-automatic) all grinding function and sequences of action
during processing cycle are controlled by programmable logical
controller (PLC).
SPECIFICATION
MODEL Specification
PTMM1320
PTMMB1320
PTMM1332
PTMMB1332
PTMM1420
PTMMB1420
PTMM1432
PTMMB1432
PTMMS1320
PTMMBS1320
PTMMS1332
PTmMBS1332
500 750 1000
500 750 1000
500 750 1000
500 750 1000
500 750 1000
500 750 1000
Center height (mm)
125
180
125
180
125
180
Max. length of workpiece
between centers (mm)
520 765 1080
520 765 1080
520 765 1080
520 765 1080
520 765 1080
520 765 1080
Max. workpiece diameter
for external (mm)
240
350
240
350
240
350
Max. grinding length
(mm)
500 750 1000
500 750 1000
500 750 1000
500 750 1000
500 750 1000
500 750 1000
External grinding range
¦µ5~¦µ200(mm)
¦µ5~¦µ320(mm)
¦µ5~¦µ200(mm)
¦µ5~¦µ320(mm)
¦µ5~¦µ200(mm)
¦µ5~¦µ320(mm)
Internal grinding range
(mm)
--
--
¦µ13~¦µ80
¦µ16~¦µ125
--
--
Depth of internal
grinding (bigger than ¦µ45mm)
--
--
110(mm)
140(mm)
--
--
Max. weight of workpiece
between centers (kg)
50
100
50
100
50
100
Grinding wheel
Dimensions (outer
dianeter ¡Á width¡Á bore)
400¡Á(32~50)¡Á203 (mm)
Max. linear velocity
35 (m/sec)
50 (m/sec)
Swivelling angle of
table
Clockwise
9¡ã 8¡ã 3¡ã
9¡ã 8¡ã 3¡ã
9¡ã 8¡ã 3¡ã
9¡ã 8¡ã 3¡ã
9¡ã 8¡ã 3¡ã
9¡ã 8¡ã 3¡ã
Counter-clockwise
9¡ã 8¡ã 7¡ã
9¡ã 8¡ã 7¡ã
9¡ã 8¡ã 7¡ã
9¡ã 8¡ã 7¡ã
9¡ã 8¡ã 7¡ã
9¡ã 8¡ã 7¡ã
Taper hole of spindle
(Morse)
Workhead
Morse 4#
Tailstocd
Total power (kw)
4.975
4.975
5.525
5.525
4.975
4.975
Net weight (kg)
2500 3000 3500
2500 3000 3500
2500 3000 3500
2500 3000 3500
2500 3000 3500
2500 3000 3500
Overall dimensions
L (mm)
2750 2870 3700
2750 2870 3700
2750 2870 3700
2750 2870 3700
2750 2870 3700
2750 2870 3700
W (mm)
2000
H (mm)
2100
¡¡
¡¡
¡¡
WORKING ACCURACY
NO
Inspection
character
Test piece
diagram and grinding condition
Inspection item
PTMM1320
PTMMS1320
PTMMB1320
PTMMBS1320
PTMM1332
PTMMS1332
PTMMB1332
PTMMBS1332
PTMM1420
PTMMB1420
PTMM1432
PTMMB1432
500
750
1000
500
750
1000
500
750
1000
500
750
1000
P1
The grinding
accuracy of test piece between centers
L=350 d=75
circularity (mm)
0.0015
0.0015
-
0.0015
0.0015
-
0.0015
0.0015
-
0.0015
0.0015
-
L=750 d=75
-
-
0.0025
-
-
0.0025
-
-
0.0025
-
-
0.0025
l=350 d=35
Consistency of
diametr in longitudinal section (mm)
0.005
0.005
-
0.005
0.005
-
0.005
0.005
-
0.005
0.005
-
L=750 d=75
-
-
0.008
-
-
0.008
-
-
0.008
-
-
0.008
roughness (¦Ìm)
Ra¡Ü0.32
P2
The grinding
accuracy of short test Piece on chuck
¡¡
circularity (mm)
¡¡
¡¡
0.0025
0.0025
¡¡
roughness (¦Ìm)
¡¡
¡¡
Ra¡Ü0.32
Ra¡Ü0.32
P3
The accuracy of test
internal grinding on chuck
L=50 d=30
circularity (mm)
¡¡
¡¡
0.0025
0.0025
Consistency of
diametr in longitudinal section (mm)
¡¡
¡¡
0.005 -
- 0.01
L=100 d=60
roughness (¦Ìm)
¡¡
¡¡
Ra¡Ü0.63
P4
The accuracy for
external grinding for Plunge-in test piece
L=30 d=25
Consistency of
diametr in grinding a batch of spare parts
