Mid-Frame Machining on Drill & Tap Centers | New Partner
Phone mid-frames and housings: outline and contour milling, visible-surface finishing, one robot over two or three drill & tap centers and servo tray feeding.
Housing and mid-frame machining and automation
Housing and mid-frame (Mid-frame, Phone structural part): A small thin-wall part with a demanding visible surface and tight tolerances on holes and contour. The page runs from what the part is and where it is used, through the machining process and machine selection, to automatic loading, feeding, inspection and the business lines that cover it.
What it is
Housing and mid-frame (Mid-frame, Phone structural part) belongs to the 3C electronics group. A small thin-wall part with a demanding visible surface and tight tolerances on holes and contour.
Where these parts come from
The industries this type of workpiece appears in; each industry page sets out the machining and automation entry points for its parts.
How the part is machined
The features and operations this structure usually calls for. The sequence actually run is cut to the dimensions and geometric requirements on the drawing.
- Outline and contour milling
- Hole machining
- Finishing of the visible surface
- Burr removal and cleaning
Machine tools that fit (chosen by structure, not by brand)
Drill & tap center
Fast cycles and large batches, with several operations on small parts handled by one machine
Machining center
Parts with tight tolerances on the outline and the holes
How it is loaded and unloaded automatically
The handling method follows from part size and weight, batch size, cycle time, the number of machines and the state the blanks arrive in.
Approach 1
One robot tending two or three drill & tap centers in a row
Approach 2
Gantry robot
Approach 3
Tray feeding with automatic collection of finished parts
Feeding and buffering
Inspection after machining
What this page is, and what it is not
No project case is shown for this part, and that is a statement of position, not an omission.
Product application — this page describes how this family of parts is generally machined and automated. That is manufacturing know-how that applies across the industry, not a description of one order.
Automation fit — the loading, feeding and inspection approaches listed above are options derived from structure, batch size and cycle time. The configuration actually built has to be calculated from the conditions of the project.
Verified project — no public project for this part has customer written authorization, so this page carries no project name, cycle time, output or result figure. For installed systems that are documented, see the shop-floor photos filed by business line: Drill & Tap Center Automation — shop-floor photos and project cases.
Business lines that cover this part
Matched on how the part is made, not by hanging all of the business lines on it.
Housing and mid-frame — frequently asked questions
What is the housing and mid-frame?
Housing and mid-frame belongs to the 3C electronics group. A small thin-wall part with a demanding visible surface and tight tolerances on holes and contour.
Where is the housing and mid-frame used?
Commonly seen in these industries: Electronics & Precision Enclosures. The industry pages on this site set out the machining and automation entry points for those workpieces.
How is the housing and mid-frame machined?
The main operations are: Outline and contour milling; Hole machining; Finishing of the visible surface; Burr removal and cleaning. The actual sequence is cut to the dimensions and geometric requirements on the drawing.
Which machine tools are used for the housing and mid-frame?
Drill & tap center — Fast cycles and large batches, with several operations on small parts handled by one machine. Machining center is the alternative: Parts with tight tolerances on the outline and the holes.
Can the housing and mid-frame be loaded and unloaded automatically?
Yes. The usual approaches are: One robot tending two or three drill & tap centers in a row; Gantry robot; Tray feeding with automatic collection of finished parts. Whether it works depends on part size and weight, cycle time and machine layout, all of which have to be calculated.
How is the housing and mid-frame fed automatically?
Options: Servo trays for high-accuracy positioning of small parts; Trays with lanes. Feeding capacity is calculated from the parts per layer, the usable number of layers and the machining cycle; no fixed continuous running time is promised.
How is the housing and mid-frame inspected after machining?
Checks usually applied: Appearance: scratches and dents; Hole positions; Contour dimensions. Precision dimensional measurement needs dedicated measuring equipment and has different limits from vision inspection.
How is automation for the housing and mid-frame planned?
Start from the part, not from a robot model: confirm the structure and the clamping datum first, then choose the machine combination and the automation method from batch size and cycle time, and finally check that feeding, buffering, inspection and safety interlocks form a closed loop.
Send the machine brand/model, part drawing or photo, blank and finished-part handling, single or multi-machine layout, target cycle and acceptance requirements.
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