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Gate Insert Manufacturing and Inspection

Gate Insert Manufacturing and Inspection
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Gate Insert Manufacturing and Inspection - 1

HUSKY Keeping our customers in the lead Original Instructions

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Gate Insert Manufacturing and Inspection - 2

Gate Insert Manufacturing and Inspection This product manual is intended to provide information for safe operation and/or maintenance. Husky reserves the right to make changes to products in an effort to continually improve the product features and/or performance. These changes may result in different and/or additional safety measures that are communicated to customers through bulletins as changes occur. This document contains information which is the exclusive property of Husky Injection Molding Systems Limited. Except for any rights expressly granted by contract, no further publication or...

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Gate Insert Manufacturing and Inspection - 3

Recommendations for Manufacturing and Inspecting Gate Inserts This document describes the preferred methods for manufacturing and inspecting gate inserts for valve gate plunger shutoffs. Critical features of the gate inserts, including tolerances, are defined on the gate detail drawing(s) provided. 1 Gate Detail Drawing (Example) 1. Nozzle Seal 2. Gate Bubble 3. Gate Land NOTE: The job specific gate detail drawing provides the required tolerances. IMPORTANT! Contact Husky with any questions related to gate insert manufacturing and inspection. Recommendations for Manufacturing and Inspecting...

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Gate Insert Manufacturing and Inspection - 4

Gate Detail Manufacturing and Inspection Manufacturing Requirements Gate inserts must meet the following manufacturing requirements: • Always machine the seal diameter (Ø D) and the gate diameter (Ø E) in one setup to achieve the required position tolerance between the diameters. Finish the lead-in angle (F) on this setup as well. One method of machining the gate diameter (Ø E) is jig grinding. NOTE: Best results have been achieved using sintered grinding pins and a low grinding pressure over this diameter. NOTE: Using the wrong tooling and/or a high grinding pressure can cause a trumpet •...

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Gate Insert Manufacturing and Inspection - 5

Zeiss VAST Sensor Head Measure the flatness (G) of Datum A. The flatness (G) tolerance is 0.005 mm (0.0002 in). Measure the size, perpendicularity (R) and roundness of the seal diameter (Ø D) as follows: NOTE: The perpendicularity (R) tolerance is 0.01 mm (0.0004 in). a. Inspect the seal diameter (Ø D) feature at three different heights over its length. Start measurement at 0.5 mm (0.002 in) from the chamfer’s end. Depending on size of its chamfer, take the 2nd and 3rd height measurements 2.5 mm (0.1 in) further along. NOTE: 1000 points are taken with filters and outliers on. The preferred...

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Gate Insert Manufacturing and Inspection - 6

Gate Detail Manufacturing and Inspection NOTE: The position (P) tolerance is 0.01 mm (0.0004 in) at the maximum material condition. a. Measure the insert prior to inspection with a height gage. The distance from the top of the insert (Datum A) to the bottom of the gate. This is to ensure the CMM probe goes deep enough and can measure very close to the “sharp” or end of the gate. b. Take measurements every 0.050mm (0.002in) starting at 0.005mm (0.0002in) above the "sharp" feature to 0.200mm (0.008in) past the Gate Land into the gate. Example: For a typical 0.400mm (0.016in) Gate Land length,...

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