Hey all,
I changed my mill from a poly-V belt to a timed pulley - HTD5. The poly belt was slipping during tapping cycles on larger taps. The timing belt is working great except for one thing:
I am getting a noticible amount of vibration in one specific speed range. Outside of this range, everything is pretty smooth.
The spindle motor is 1750RPM Vector Duty with full HP at 2x speed.
The spindle is geared up 2.2x, giving a speed range of 200-7700RPM.
The vibration ONLY happens between 1700-2100 RPM.
I was wondering if this is a "harmonics" issue with the mill. At that speed it just finds a rhythm.
I have several hours on the machine since changing the pulleys. Hoping the belt would run-in and this was a temporary issue. But not much relief so far.
If you guys have any suggestions, I would welcome them.
Jared
I changed my mill from a poly-V belt to a timed pulley - HTD5. The poly belt was slipping during tapping cycles on larger taps. The timing belt is working great except for one thing:
I am getting a noticible amount of vibration in one specific speed range. Outside of this range, everything is pretty smooth.
The spindle motor is 1750RPM Vector Duty with full HP at 2x speed.
The spindle is geared up 2.2x, giving a speed range of 200-7700RPM.
The vibration ONLY happens between 1700-2100 RPM.
I was wondering if this is a "harmonics" issue with the mill. At that speed it just finds a rhythm.
I have several hours on the machine since changing the pulleys. Hoping the belt would run-in and this was a temporary issue. But not much relief so far.
If you guys have any suggestions, I would welcome them.
Jared