1、Concept

Various metal and non-metal parts installed on building doors and windows are called door and window hardware. Based on using purposes, door and window hardware can be divided into building door lock, handle, spacer, bisagra, hinge, plug pin, window catch, profile material of door frame structure, etc. It is a general term for various hardware structural parts used on doors and windows. New-type door and window hardware parts are designed and processed from the perspective of humanization, which has incorporated innovative and environmentally friendly elements and combines ergonomic researches. They are trying to create emotional resonance of sense of touching and art for users from various aspects including technology, product concept and value creation, and pursue for healthier and safer life in building space.

2、Measuring Element

Position of installation hole, appearance dimension, profile structural dimension and thickness, space angle, etc.

3、Difficulty

Structural components of door and window hardware are of simple appearance, but have extremely high yield. It is necessary to efficiently cooperate with the production department to control production quality.But handle, hook and other parts of doors and windows are frequently of complicated structure, and the surface profiles present with irregular curved surface. If it is required to place steadily, it is necessary to use clamp or fixture. Work pieces are placed behind the space of measurement bench occupied by clamps and fixtures, and small-space instruments are always inadequate.

4、Solution

Solution for high-efficiency measurement is to select an instrument with larger flat area, and place multiple products in array with clamp (tray) at one time. Measuring multiple products at one time also save the time for loading and unloading. It is only required to introduce to measurement procedure during measurement, and then measure tray by tray to achieve efficient measurement. TZTEK VMG large-stroke projectors apply gantry structure. Work pieces are placed on a platform which will not move back and forth, thus ensuring stability of work pieces during measurement. Meanwhile, its large stroke can accommodate dozens of work pieces for simultaneous measurement. Compared with conventional measurement instruments, Z-axis space has been improved to facilitate to place fixed clamps in the case of measuring work pieces of complex structures and requiring larger space.