CN106017253A - Internal thread sampling tool and sampling method - Google Patents

Abstract

The invention discloses an inner thread sampling tool. The inner thread sampling tool includes a sampling ruler body and AB type curing adhesive grease which is bonded at one end of the sampling ruler body; the sampling ruler body is provided with scale marks; and the thread pitch, thread angle and effective thread length of an inner thread in a threaded hole of a flange are sampled through a resin embossing mode, so that the related dimensions and standards of the thread can be judged. The inner thread sampling tool of the invention is low in manufacturing and material cost. With the inner thread sampling tool of the invention adopted, a phenomenon that a fastener in the inner threaded hole of the flange cannot be installed or is installed in a non-in-place manner can be avoided.

Description

A kind of female thread sampling instrument and sampling method

Technical field

The present invention relates to the sampling of flange screw in shipbuilding, specifically a kind of female thread sampling instrument And sampling method.

Background technology

In produced on-site, for part valve member, equipment interface on some special female thread screw, The thread angle of female thread, pitch, the unknown message of useful thread need clearly.Such as inlet valve The American Standard inch screw thread used on part, needs the securing member selecting correct standard and specification to be installed.

Thread standard is generally divided into metric thread, inch screw thread two kinds, the outer spiral shell of the securing member that matches with it Stricture of vagina Ya Jiao, tooth, away from needs correspondence, otherwise will be unable to install (see Fig. 1, Fig. 2).Screw thread specification is with public affairs Millimeter processed (mm) is measurement unit, and kind is more fixing, is generally divided into coarse thread (60 °), closely-pitched (33 °). Screw thread specification represents with " metric system spiral shell footpath (coarse thread)/metric system spiral shell footpath * tooth is away from (closely-pitched) ", with conventional In GB/T5780-2000 metric system bolt standard as a example by M30*3 screw thread: metric system spiral shell footpath=30mm, tooth away from =3mm, closely-pitched regular screw threads.Inch screw thread specification is single with English (1inch=25.4mm) for metering Position, kind is more, in American Standard ASME B1.1 as a example by inch screw thread, can be divided into the unified system of UN-not Become tooth away from screw thread, the unified coarse thread processed of UNC-, the unified fine thread processed of UNF-, UNEF unification The unified special thread processed of extra-fine-thread processed, UNS-etc..Inch screw thread specification is with " aperture/spiral shell footpath-every English internal screw thread number " represent, by 3/4 " as a example by-10UNC: represents aperture/spiral shell footpath=3/4 ", often English length internal screw thread number=10 tooth, UNC=English system coarse thread.Effective thread length in internal thread hole, In the case of female thread drawing information the unknown, thick generally according to the joined nut of the bolt that this screw is corresponding 1～1.5 times of degree is meter, to ensure to meet Tightening moment.But due to the multi-size of internal thread hole, The method is the most all suitable for.

The measurement of female thread specification

A. the female thread metering system being currently known, is to use " JB/T7981-95 thread profile gauge calliper (meter Measuring device has) " (see Fig. 3) directly rests against and carries out on the female thread of screw end, though this kind of mode The easiest, but it is primarily adapted for use in externally threaded measurement.Due to internal thread hole aperture, change institute to hole depth The restriction caused is more, it is impossible to be applicable to the screw of different size.And operation when measuring is the most not Just, operator needs repeatedly to observe and could judge whether calliper leans on accurately.

B. another mode is to use known specification " GB10920-89 plug thread gauge (drift, only Rule) " it is screwed into screw and sees whether to be suitable for, although this mode is easy, but need standby bolt to advise Lattice are more, and the female thread standard on part flange may not met, and needs operator to possess necessarily Specialized Quality.

In sum, in current work progress, lack one simply, fast and effectively female thread survey Amount mode, produces impact to the design of pipe component, type selecting, installation.

Summary of the invention

It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, it is provided that a kind of female thread sampleman Tool and sampling method, for female thread, quickly obtain " thread angle, pitch, useful thread " Associated threads information.

The technical solution of the present invention is as follows:

A kind of female thread sampling instrument, including sampling chi body and being bonded in this sampling chi body one end The AB type viscous fat of solidification, described sampling chi body is provided with scale.

The described viscous fat of AB type solidification is glued fat by commercially available A type and Type B glues fat and mixes.Industrial Common market product, low price and buying are convenient, are typically used as stuffing-box or the dress of cable penetrating part Pool material, character is similar to greasy filth or plasticine, and the A type of viscous fat is consolidated in certain time after mixing with Type B Change, there is certain intensity, be unlikely to deform.

The described rustless steel flat bar that sampling chi body is a length of 80mm, flat bar cross section is rectangle, In flat bar respectively with one inch, half inchage scale is set, scale is staggered.

A kind of female thread screw message sample method, comprises the steps:

1. A type glues fat and after Type B glues fat mixing, is laid in the one end of sampling chi body；

2. screw inner bottom part is stretched in the one end being bonded with the sampling chi body of the viscous fat of AB type solidification, and Press to screw thread side, judge impressing dynamics by feel；

3. persisting in screw by female thread sampling instrument, the AB type solidification of impressing to be threaded is viscous After fat is fully cured, take out from screw, and check that impressing is the most clear, as clearly, then enter step The most 4., otherwise, viscous for the solidification of AB type fat is removed, returns step 1.；

4. utilize thread profile gauge calliper that screw thread impressing is measured, at once obtain the size letter of female thread Breath.

Also include when 5. step needs to reuse, the viscous fat of AB type solidification on sampling chi body is gone Remove.

The viscous fat of AB type solidification only the most just can mix and lay, must be immediately after laying Use, to ensure implementation result.:

Compared with prior art, the invention has the beneficial effects as follows

1) for the female thread in flange screw, resin is utilized to imprint sampling mode, to screw female thread Pitch, thread angle, useful thread sampled, it is judged that the relative dimensions of screw thread more accurately, Standard.

2) manufacture and material cost is relatively low；

3) avoid flange internal thread hole securing member and cannot install or install phenomenon not in place.

4) applicable object is predominantly: the internal thread hole on valve member peculiar to vessel, the internal thread hole on shipborne equipment.

Accompanying drawing explanation

Fig. 1: coarse thread, fine thread connection diagram；

Fig. 2: female thread fastening effective length；

Fig. 3: thread profile gauge calliper schematic diagram；

Fig. 4: female thread schematic diagram directly measured by thread profile gauge calliper；

Fig. 5: present configuration and assembled state schematic diagram；

Fig. 6: internal threads impressing schematic diagram when using the present invention；

Fig. 7: the present invention obtains female thread die schematic diagram；

Fig. 8: use screw snap gauge internal threads die instrumentation plan；

Detailed description of the invention

The present invention is described in further detail below in conjunction with the accompanying drawings.

A kind of female thread sampling instrument, including sampling chi body 1 and being bonded in this sampling chi body 1 one The viscous fat 2 of AB type solidification of end, described sampling chi body 1 is provided with scale.Described AB type is solid The viscous fat of change is glued fat by commercially available A type and Type B glues fat and mixes.Described sampling chi body 1 is for long Degree is the rustless steel flat bar of 80mm, and flat bar cross section is rectangle, respectively with one inch, half English in flat bar Modest ability degree arranges scale, and scale is staggered.

For the internal thread hole of needs sampling, operation as follows is carried out:

1) female thread sampling chi body and the viscous fat of AB type solidification are got out；(see Fig. 5)

2), after AB type is glued fat mixing (similar plasticine), a. female thread sampling chi at once it is laid in originally Body end, and internal threads sampled；(see Fig. 6)

3), during sampling, after sampling chi body is stretched into the bottom in screw, press to screw thread side, can pass through Feel judges impressing dynamics (can be taken off screw and check that whether clear impressing is)；(see Fig. 6)

4), after sampling, sampling chi body can be persisted in screw or take out screw, take suitable protection to arrange Until the b being threaded impressing is fully cured after executing；(see Fig. 7)

5) use thread profile gauge calliper that acquired screw thread impressing is measured, at once obtain the chi of female thread Very little information.(see Fig. 8)

6), when needing to reuse, a is sampled the solidification on chi body and glues fat b removal at once.

It should be noted last that, above example is only in order to illustrate technical scheme rather than limit System, although the present invention being described in detail with reference to preferred embodiment, the ordinary skill people of this area Member should be appreciated that and can modify the technical scheme of invention or equivalent, without deviating from this The spirit and scope of inventive technique scheme, it all should be contained in the middle of scope of the presently claimed invention.

Claims (5)

1. a female thread sampling instrument, it is characterised in that: include sampling chi body (1) and gluing The knot viscous fat (2) of AB type solidification in this sampling chi body (1) one end, described sampling chi body (1) It is provided with scale.

Female thread sampling instrument the most according to claim 1, it is characterised in that: described The viscous fat (2) of AB type solidification is glued fat by commercially available A type and Type B glues fat and mixes.

Female thread sampling instrument the most according to claim 1, it is characterised in that: described takes Sample ruler body (1) is the rustless steel flat bar of a length of 80mm, and flat bar cross section is rectangle, in flat bar Respectively with one inch, half inchage scale is set, scale is staggered.

4. a female thread screw message sample method, it is characterised in that the method includes as follows Step:

1. A type glues fat and after Type B glues fat mixing, is laid in the one end of sampling chi body；

2. screw inner bottom part is stretched in the one end being bonded with the sampling chi body of the viscous fat of AB type solidification, and Press to screw thread side, judge impressing dynamics by feel；

3. persisting in screw by female thread sampling instrument, the AB type solidification of impressing to be threaded is viscous After fat is fully cured, take out from screw, and check that impressing is the most clear, as clearly, then enter step The most 4., otherwise, viscous for the solidification of AB type fat is removed, returns step 1.；

4. utilize thread profile gauge calliper that screw thread impressing is measured, at once obtain the size letter of female thread Breath.

Female thread screw message sample method the most according to claim 4, it is characterised in that should Method also includes when 5. step needs to reuse, and is gone by the viscous fat of AB type solidification on sampling chi body Remove.