後藤精機 Company Profile

The technical information magazine "Microfabrication Technology News Vol. 13" introduces this month's column, points to consider during the injection molding of POM, and the standardization of quality. [Contents] [Points to Consider During POM Injection Molding] - The biggest consideration when performing POM injection molding is safety. - When setting conditions for POM, to prevent burrs, the molding temperature, injection speed, and holding pressure should not be set too high. [Methods for Fixing Workpieces for Machining (Regarding the Use of Vices)] - Since vices are side clamps, they cannot be securely fixed if there are no parallel surfaces on the fixing side. - If the clamping force is too strong, warping may occur, and if it is clamped lightly, machining accuracy may vary, potentially causing the workpiece to come loose and be thrown off. - To take advantage of the benefits of starting machining without creating a fixing jig, it is important to understand the disadvantages well and use it accordingly. [Standardization of Quality Through the Use of Gauges (Inspection with Ring Gauges)] - When measuring with calipers or micrometers, measurement errors can occur due to variations in force applied by different individuals. However, with ring gauges, anyone can use them, and since the judgment is only about fitting and stopping, there is no need to worry about measurement errors.

The technical information magazine "Micro Machining Technology News Vol.14" introduces this month's column on 3D data corrections performed before cutting process programming, the role and characteristics of gates in prototype molds, and more. [Contents] [Points to Note for Inspection of Cutting Process Parts with Tolerance Bosses (Axles)] ○ Common phenomena in cutting parts with bosses or axles include the presence of R-shaped or stepped remnants at the base of the boss, dimensional variations at the tip, middle, and base of the boss, and lack of true roundness of the boss. [Regarding 3D Data Corrections Performed Before Cutting Process Programming] ○ For parts with large tolerances such as hole diameter, boss diameter, and plate thickness, data adjustments are made in advance to ensure that the remaining allowance for roughing is uniform. ○ When the shape is complex, coordination is carried out at the corners of the product (where machining R is applied), and adjustments are made for fitting with other parts to create the machining program. [Regarding the Role and Characteristics of Gates in Prototype Molds] ○ Gates serve as the "entrance" for pouring molten plastic into the product shape part of the mold. ○ There are various types of gates, including side gates, jump gates, pin gates, and submarine gates.