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Hardinge conquest 42 OT-C feed rate issues

mmercer

Plastic
Joined
Jul 29, 2008
Location
bryan tx
Howdy all,

I have a feed rate problem that is driving me bonkers:willy_nilly:. I just powered up and new to me an early 90's model conquest 42 with an OTC control ten station turret with live tooling and subspindle. the machine runs fine except for running the correct feed rate. With the following prep codes G20 G99 G01 mode at 1500rpm with a programed feed rate of 0.004" it moves like I'm feeding 4 microns/rev verses 0.004"/rev. Is there a scaling factor or a Hardinge logic safety that could be causing my problem? When I get to a threading cycle she just stops all together but doesn't alarm out.

I don't know if its a parameter issue or a safety interlock or just a gremlin...

Any help would be greatly appreciated.

this is the code that im running. I run this code on another OTB and another OTC control with no issues.


G20
(TOOL - 2 OFFSET - 2)
(OD 55 DEG RIGHT INSERT - DNMG-432)
G0 T0202
M8
G97 S1500 M03
G41 G0 X1.1327 Z-.0845
G50 S1500
G96 S450
G99 G1 X1.1144 F.004


(TOOL - 8 OFFSET - 8)
(ID THREAD INSERT - NONE)
G0 T0808
M8
G97 S800 M03
G0 G41 X.6247 Z.4723
G76 P030029 Q0 R0
G76 X.8356 Z-.6593 P571 Q142 R.0283 F.07143
M9
G28 U0. W0. M05
 
well, after further thought and review I noticed that the actual spindle speed is not displaying correctly. when i program 1500rpm the spindle spins up to what appears to be 1500 but the actual spindle speed fluctuates between 0-1rpm. maybe I have a spindle parameter issue instead?
 
I have a later machine probably with a different control. But the things I would check first, your machine is running inches and not metric? Your encoder does not show any damage and the belt is there? Feed override control is working correctly?
For more help from other with the same machine try the top section of this forum under CNCs.
 








 
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