From Assembly to Delivery: Zero‑Wear Glue‑Stick Groove Machining in One Continuous Four‑Axis Pass

Today, JV precision will share with you how we solved the problem of flatness and fit of core parts for an equipment manufacturer from Kazakhstan!

Introduction:

As early as mid-June, our customer found u on the mic platform and told us about her processing requirements. The overall processing difficulty of this project is mainly reflected in the flatness and fit between the glue stick and the groove.

Key Customer Requirements:

1. The glue stick will rotate inside the housng groove.

2. There must not be any curvature along the axis of rotation of the rod . I.e. all lines must be parallel.

3. The final machining of the housing groove  must take place in the assembled version  in order to avoid working out of the adhesive rod and groove when the rod is rotated.

4.  In order to get a perfect fit and there was no wear of parts, the final pass of the groove with a mill should be made in the assembled state in one pass without removing from the machine, in order to

5. observe the parallelism of all lines and avoid helicoptering around the axis.6. The glue stick should be removed from the groove before delivery to avoid damage to the parts during delivery.

One-project challenge

1.  Full-length parallelism control: The glue stick rotates in the housing slot . Any axial bending or non-parallelism will cause jamming or wear and the two ends of the stick glue should not have holes when processed.

2.  Assembly state finishing: The final milling and grinding of the slot must be completed at one time after the housing and the guide bar are assembled. The machine fixture must keep the reference of the parts unchanged after assembly to avoid reference drift caused by disassembly.

3. The assembled parts should be tightly fitted to prevent glue from penetrating.
   

Two-Our solution

1. The four-axis machine is used for processing, and it is completed in two steps. Each component is assembled before it is removed from the machine.

2. At the same time, considering that the glue stick is too long and fixing both ends during processing will cause holes, we chose to lengthen the material and then cut off the excess part after processing.

Three-Problems encountered along the way and our solutions

Drawing conflict: 3D vs. 2D dimensions do not match → Confirm with the customer that the 2D drawings are correct, and communicate with the engineer in a timely manner to avoid rework.

 Front sharp corner warping: R0.0 sharp corner warped after processing → Change to R0.1 rounding, and negotiate with the customer regarding the length after modification.

Four-Final processing details display

Side view of the product in assembly state

Unassembled product display

Product front groove display picture

Five-Customer feedback