Increase Speed and Accuracy Installing Threaded Inserts

Installing threaded inserts by hand can be time consuming and inaccurate. One of our customers faced this problem when it came to installing inserts into their pre-molded plastic chair bases. The FlexArm engineering team came up with a solution. 

To speed up the process of installing inserts, our engineers selected the A-32 pneumatic tapping arm. For this process, an operator machinist aligns the arm and insert with the hole, pushes the forward lever, and while applying slight downward pressure, allows the pneumatic motor to do all of the work screwing in the insert. The machinist can then quickly guide the arm to the next hole. By utilizing the A-32 tapping arm, the time it takes to install each insert is drastically reduced compared to installing them by hand.

While the pneumatic tapping arm solved the problem of speed, the issue of inaccuracy still remained. Each insert was not being installed to the same depth in the plastic. Typically FlexArm’s standard automatic depth stop is the simple solution to this problem. However, for this application, the threaded inserts are installed into a standoff on the chair base. The standoff is too narrow for the standard depth stop to reach.

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The FlexArm engineering team designed a modified version of the pneumatic automatic depth stop. A custom assembly with a “finger” is used on the end of the depth stop to allow it to touch the ring of the standoff in which the inserts are being installed. When this “finger” touches a part’s standoff ring, the air supply to the motor is cut off, stopping the motor, and installing the insert to the predetermined depth. 

By using this customized automatic depth stop with the A-32 tapping arm, the customer is able to install threaded inserts to an exact depth quickly and accurately every time. 

If you are interested in a custom ergonomic solution, contact us or give us a call at 1-800-837-2503.

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Standard Features

  • Hand Pendant
  • 22″ Touch Screen Monitor
  • Omron FlexCNC Controller
  • Mobile Control Panel
  • Through Spindle Coolant 
  • Auto Tool Changer 
  • Flood Coolant
HP
Max RPM
FT/LBS
Series

18

4000

92

C-20-02 / C-10-02

18

6000

61

C-20-02 / C-10-02

33

12000

61

CM-20-02

Auto Stand-Off – This is currently defined to be surface stand-off and not to be confused with vector stand-off in 5-axis mode. The current auto stand-off is based on a changing surface and will adjust vertically based on the angle of the “A” Axis, so there is five (5) axis taken into account during the calculations, but this is not the same as the tool vector stand-off. There is the ability to do the vector stand-off change while the machine is running manually with buttons on the screen.

Z-Reader Probe – The Z-Reader is a device for mapping the location of the surface. It can be controlled manually & programmatically. The option is NOT active while cutting & is retracted out of harm’s way. It can be triggered to verify the surface at every pierce before the cutting process starts, or it could be used to drive surface mapping of the whole part before cutting starts. It begins with initialization or zeroing of the device to the surface at the beginning of a program and then accumulates or tracks the difference from that zeroing effort.

Automatic Edge Finder – The edge finder is or can be utilized manually (Jogging Method & Screen Buttons), programmatically (M & G codes), or fully automatic routine (dedicated program). This option sets offsets & program rotation to match the orientation & location on the cutting table.

AC Unit Installed on Electrical Cabinet – The unit is mounted on the cabinet’s High Power (480v) side. It is close to the location where the drives are mounted. This option keeps the cabinet temperature stable and allows heat dissipation faster. The servo drives for all axes are the most significant contributors to heat inside the electrical cabinet.

5-Axis Renishaw CalibrationThe calibration unit is a Renishaw model APCA45 with a modified spherical stylus. The device has a retractable cover and air purge to clear debris & dust during the activation process. It mounts to a swing arm controlled by a pneumatic rotary, so it is out of the way during regular operation and swings into the calibration position for calibration only. 

HP
Max RPM
FT/LBS
Series

18

4000

92

G-20-06 / G-10-06

18

6000

61

G-20-06 / -10-06

40

4000

217

GM-20-06 / G-20-06 / G-10-06

40

6000

145

G-20-06 / G-20-06 / G-10-06