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日本測范社代理  您現在的位置:首頁 > 新聞中心 >Standard for Thread Gauge Inspection Products  

Standard for Thread Gauge Inspection Products

來自: · 2019-09-11 15:45:35

  Use method of thread ring gauge: Two ring gauges are used to screw on the external thread to be tested (in random order).

  (1) General rules, however, (can not be screwed) thread diameter is large, the product is not qualified.

  (2) The stop rule was passed, the mid-diameter was small, and the product was not qualified.

  (3) The general rule can rotate freely at any position of the thread, and the stop gauge can be twisted one or two or three times. (Sometimes it can twist one or two more times, but the head of the thread does not fall into the end face of the ring gauge.) This means that the diameter of the external thread you have tested is just within the tolerance zone, and it is a qualified product. Thread ring gauge is used to measure the correctness of the size of external thread. The through end is one piece and the end is one piece. The stop ring gauge has grooves on the outer cylinder surface. When the size is over 100 mm, the thread ring gauge is of double handle thread ring gauge type. Specifications are divided into three types: coarse teeth, fine teeth and pipe threads. Thread ring gauge with pitch of 0.35 mm or less and with pitch of 0.8 mm or less has no end. Thread ring gauge is a kind of "measuring instrument" used to measure the diameter of standard external threads. Two are a set, one is a general gauge and one is a stop gauge. The inner thread diameters of the two glossy ring gauges are manufactured according to the larger and smaller limit sizes of the standard thread diameters, respectively. The accuracy is very high. There are as many kinds of specifications as those of common external thread (screw).

  Use method of thread ring gauge: Two ring gauges are used to screw on the external thread to be tested (in random order). (1) General rules, however, (can not be screwed) thread diameter is large, the product is not qualified. (2) The stop rule was passed, the mid-diameter was small, and the product was not qualified. (3) The general rule can rotate freely at any position of the thread, and the stop gauge can be twisted one or two or three times. (Sometimes it can twist one or two more times, but the head of the thread does not fall into the end face of the ring gauge.) This means that the diameter of the external thread you have tested is just within the tolerance zone, and it is a qualified product.

  The thread gauge size of the ring gauge is supposed to be the larger solid tooth shape of the tested thread. The action diameter of the tested thread is checked to exceed the medium diameter of the larger solid tooth shape, and the actual size of the bottom diameter is checked to exceed the larger solid size.

  Inspection method of thread plug gauge:

  If the tested thread can be screwed with the thread gauge and not completely screwed with the thread gauge (thread gauge can only be screwed with two segments of the tested thread, and the screwing amount must not exceed two pitches), it shows that the action diameter of the tested thread does not exceed the medium diameter of its larger solid tooth type, and the single medium diameter does not exceed its middle diameter. If the diameter of the smaller solid teeth is smaller, then the screw fit and connection strength can be guaranteed. Then the measured thread diameter is qualified, otherwise it is not qualified.

  To put it plainly, thread diameter is the nominal diameter of thread, which is the value represented by * in the thread "M**". It is a diameter between the big diameter (the diameter of the top of the tooth for the external thread, the diameter of the bottom of the tooth for the internal thread) and the small diameter (opposite to the meaning of the big diameter). Larger solid teeth, as the name implies, are threaded teeth (don't tell me you don't even know what "tooth shape" is). That is to say, the larger solid that can be produced by actual processing is in a larger error range and in volume than that by theoretical design.

  The larger entity size of smooth ring gauge shaft parts (external thread) is reflected in diameter, that is, the diameter of shaft is larger than the design size; the larger entity size of bored parts (internal thread) is reflected in diameter, that is, the diameter of hole is smaller than the design size.

  Shs / JPG thread gauge agent - Kunshan Youshuo, if you need to contact online.


關鍵詞:SHS,/,JPG,ring,gauges

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