Push Bending Profile Table

About Push Bending Profile Tables

This is a sample Push Bend Profile Table. Each profile row contains a profile setup for a given radius. An unlimited number of profile values can be entered. Using this method of calculation, it is possible to calculate different Push Bends by indicating the new bend angles. Because we use this method of calculation, it is possible to correct push bent parts using measuring center connections. Correct the bend value, and the push bend values are automatically calculated during AutoBuild.

Loading the Profile Table Menu

The Profile Table Setup is entered from the FRB screen only. The button is to the right in the button toolbar at the top.

The button is labeled "PB Profile" which stands for "Push Bending Profile."

Profile Values

Profile Value Names

Value Name	Description
Profile Name	The "Profile Name" is what you use to identify a profile in the rest of CNC Bender.
Arm Angle	This is the final angle of the arm during Push Bending.
Arm vAdjust	This allows the velocity of the bend arm to be adjusted by a percentage of the original calculated velocity.
Feed Position	This is how far the carriage must travel to achieve the "@ Degrees" value programmed at the far right side of the table. For example, to achieve a bend angle of 90 degrees may require the carriage to move forward 10 inches. These two values combined allow CNC Bender to calculate other bend angle values (which translate to carriage motion) for this Profile.
Feed Speed	This is the speed (1-10) of the carriage during the bend for this profile. The speed of the carriage is also used to calculate a starting bend arm motion speed. The two are then directly proportional. For example, an increase in Feed speed will cause an increase in the calculated Bend Arm velocity so that the two stay synchronized when the bend arm is moving to its final push-bend location. If the calculated Bend Arm velocity is ever greater than the bender's maximum bend arm speed, then CNC Bender will cap the value at the maximum. If this happens, then a remark is placed in the Processlist just before the Push Bend.
@ Degrees	This is the angle of the tube that is achieved by the "Feed Position" value above.
Twist ON	This switches the rotational twist ON/OFF in the profile. (Added in CNC Bender v11-20080725)
Twist CCW	This controls the direction of the twist. The choices are CCW or CW from the front of the bender. (Added in CNC Bender v11-20080725)
Twist Gear	This controls the gear in degrees relative to the Feed axis. The value can be as low as 0.002 degrees per millimeter. If the value is set to 1, then the rotation axis rotates 1 degree for every 1 millimeter the Feed axis moves forward. If the value is less than 0.002, then the rotate does not move. Since the twisting action is electronically geared to the Feed axis, speed changes in the Feed axis will not change the pitch of the helix. Feed speed 1 or 10 makes no difference. Also, it precisely decelerates its rate of twist as the Feed axis enters its deceleration in order to prepare for a hitch feed motion. The effect is precise and repeatable coil production since the twist is completely and precisely dependent on the Feed axis in Push Bending. (This feature replaces the Twist Velocity in CNC Bender v11-20081230)
Sample Profile Table Setup

How it Works

See this diagram as an illustration of the three foundation values used to calculate the bend angle in push bending.

Other Pages

• See CNC Bender v11-20081230 for information on the first version to enable HITCH FEED Push Bending with Twist Gearing
• See CNC Bender v11-20080424 for information on the first version to enable Push Bending
• See Push Bending
• See Helical Coil