DE1500926A1 - Use and process for its manufacture - Google Patents

Description

Dipu-Ing. F.Weickmann, Dm. Ing.A.Wiickmann, Difu-Ino. RWiickmann DiPi _n -PHTS. D ». K. Finch Patintanwälti 1500926

I MONCHlN 37, MaHUTlAISl Jl, IUFNUMMlK 41) 111/11

BOSAN Engineering Corp., 2841 Weatooaet Highway, Newport Beaoh, California, U.S.A.

Einaatz and Verfahrtn for its division

The invention relates to Sohraubeingätae that lock aioh in 3t · threaded bores and a manufacturing device for solo Sohraubeinaätze. The details deal with the invention of inserts that can be locked in BohlungaA without special tools, on which no recesses are provided and with a manufacturing process for these devices.

So far, operations as a lock against a threat

In this connection, a thread was browed on the circumference of the hollowing and then grooved at one end. In this process, the thread turns at the grooved end deformed and the fabric tended to ', aeitlioh auazubuokeln' · βο uaii the Gresaintdurciimeaeer dea Binaatze · in this

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somewhat enlarged * Additionally calibrated profile twisted the threads even in the longitudinal direction and stretched out, "This deformation and expansion makes for installing the A ·" set in a workpiece a countersunk hole necessary _t because the grooved threads the use of non along the thread base that is, due to the expansion and deformation of the thread profile in the longitudinal and transverse directions, this grooved part of the outer thread of the insert does not fit into the associated threads of the workpiece bore.

A special workpiece guide, which is produced with special tools, must be provided for the required depression. In addition, the workpiece hole cannot always be drilled at the desired location, for example in the saw of an edge or an end of the workpiece, because there must be sufficient clearance for the recess. This clearance is commonly referred to as "sand distance" that the insert is used on the workpiece surface. Also provide, yje ^ eii der Eiasenlcurig v / eni ^ ex · Gev; ir.de ~ gears wm engagement with the external thread of the insert, whereby the effective resistance of the ilineataea to pulling out is reduced «

The present invention makes a depression in the Werkstüok überrlüsfig * This results in a lower aldiatance mögXion and the sowing can be up to a «? any.Xiefe One can change the control system after the elimination of the the 'Werkgtüekbohrung mil; simple tools

Customary drills and threads aonntidltohafirn) manufacture ^ 800023/0671

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it also offers additional resistance to being dragged, there are more G-turns on the workpiece with the external thread of the mission are engaged. Finally, since the insert according to the invention does not require a countersink, several Place inserts one behind the other in the same "workpiece hole"

The invention is based on the object of creating an insert that can be locked in a threaded hole in a workpiece and that does not have a counterbore in the workpiece hole. Such an insert has the advantage that no special tools are required to drill the workpiece and no special type of hole has to be made. The insert according to the invention can be locked in a workpiece hole at any depth. Several such inserts can also be accommodated in tandem, one behind the other, in the same workpiece bore, and the insert according to the invention has the advantage that it can be fixed in a workpiece that requires a minimum of marginal distance from the edge or the hand of the workpiece. · ^; The invention is also directed to a manufacturing method for use with the abovementioned properties and advantages.

, / Other tasks, iüerkuiale and advantages of the invention are based on the following description of the attached drawings. Show it"
l? 'is * 1 a side view, partly in the middle, of a massive Bohl-.ng, which has a ^ iide a dtück with a smaller jjwi- cj ^; ie sser j

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Jig.2 a view from above about this j

Pig.3 is a side view, partly in section, of the in Fig.1 Bohlings shown, in which the piece with reduced Diameter is grooved on its outer surface and which is traversed over its entire length by an axial bore istj

Pig.4 a top view of the half-finished insert of the Mg. 3}

Pig.5 is a side view, partly in section, of the finished insert, which is screwed into a workpiece provided with matching threads. The finished insert according to Pig. 5 is in the Innexen. equipped with a threaded hole and a counterbore and has an external thread. In addition, the threaded hole of the insert is provided with longitudinal recesses for the engagement of a tool when screwing in

Pig, 6 a view from above of the exnsatz aer Pig.5j

Pig.7 is a side view, partly in section, of the insert of Pig.5 and 6, after the plait part of the insert has been expanded outwards so that the teeth arranged in the area of the recess in the insert on its outer surface, aie as a safeguard against Unscrewing is used _# have dug into the threaded feet of the white piece bore

Pig.8 is a side view, partly in section _{f, of} a solid blank, which at one end has a piece with a smaller diameter and corresponds to that shown in Pig.1

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Pig.9 is a top view of the one shown in Pig.8 iig.io a side view, partly in section, of the in gazed Bohlings, "in which the piece with a reduced ■ The diameter is grooved on the outside. The insert has an internal bore and a countersink that is connected to a two-stage countersinking tool manufactured iatj

i'ig.11 a Ansioht from atop the halbferti _o s use of the J? ig. 1 ο ι.

i'ig.12 a side view, partly as a son, of the finished Insert that is screwed into a workpiece with a suitable thread before its head part is expanded on the outside. As can be seen, the insert is provided with an internal thread and an external thread. In addition, at the base of the upper part is the two-stage Internal grooving is planned!

i? ig.13 a top view of the use of i'ig. ^ j

1-4 a side view, cut to the leil, of the in] fig.12 shown insert after the head part of the insert expanded outward into the threads of the 'workpiece bore is.

In α en Ji ¹ I ^ ,. 1 and 2, the body of a solid blank is indicated as a whole by 15a. At one end there is a stuok 15b with a smaller xiurohmesser than the rest of the body! cseiien. x / the smaller diameter of the piece 15b is so wänltl ei.iQ certain difference between the diameter of the narrowed 'Ö-buckea 15b and the rest of the body 15a, whose purpose is later confirmed. will be described in more detail. The narrowing

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can be done by shaping, milling, grinding or otherwise as I will·

Pig. 3 and 4 show the hollow of the 3? Ig. 1 and 2, the is now provided with a bore 16 so that an insert body

15 remains. The insert body 15 is on the narrowed Piece grooved, ao that longitudinal grooves 17 were formed on the outer surface aind. It should be noted that close to the formation of the longitudinal grooves 17 on the narrowed dtüok of the öesamtdurohmesaer des EinaatzkÖrpers including aea corrugated piece the same everywhere iat. Daa means, after the boot, iat the durometer of the grooved Area equal to the diameter of the rest of the insert body 15 * so that the entire insert can be screwed into a threaded hole in a workpiece without any obstruction with the thread turns of the workpiece enters «Into the Pig *. 5 and 6, the insert body 15 has a bore

16 with a recess 18 and an internal thread 19 · The insert body 15 also has an external thread 2o, ground in there became. It should be noted that when attaching the external thread 2o over the longitudinal grooves 17 of the body 15 along the threads teeth 21 protruding outward in the grooved area are formed. An important result is that that Profile of the threads and accordingly also the profile of the outwardly protruding teeth in the grooved area practically the same iat as the profile of the threads of the rest of the Einaatzkörpera. That means “The profile and pitch of the external thread 2o on the insert are uniform, whether the thread is now grooved or a smooth rope attached to the insert body.Furthermore, it is important that the external thread

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sanded and not applied by the rolling process, because in the latter part the longitudinal grooves 17 are destroyed and thereby screwing the insert into the threaded hole 22 of the Workpiece 23 is made impossible, since any deformation of the external thread 2o the adaptation in the corresponding ü-ewindegänge 24 of the Vexkstückbohrung prevented. Even if aas G-ew-uide 2o Viird rolled up in front of the Riefeluiig, destroys the process of hoofing the threads in the area of the outer length grooves 17 and makes correct screwing of the liii ^ etch into the workpiece bore not possible.

In Figure 5, the insert is shown fully screwed into the threaded bore 22 of the Y / piece 22, the external thread 2o being received in the threads 24 of the workpiece. However, the grooved head part of the insert has not yet dug into the outer thread of the female thread 24 of the adapter bore through expansion it 2o 'rifled in .Bereich and now _to ezahnten ütLckes aes iiinsatzes are the same as the iiiiaisatzes- on the Zörper 15th JJA as aCiion erwälmti the profile of the external thread in the gesühnten i'eil equal dei .. profile of the external thread in the remaining 'is i'eil, can si cn the use of o-uie further in the JBonrung C'z aes "erkstiickes 2j screw in. -Jie teeth "21 in o.eui!»! W ^ fteil aea iuinsau ^ it daiier iiiciit in α en ü-ewinuef Uüen aer ü-ewinaeboaru.ng 22 firmly.

iüie the threaded hole 22 of the workpiece 23 in ü'ig.5 has no egg;: sen: iu- _A g. jjui-cIi c.en omission of a sullen indentation at the. »crkstückbohrung 22, the latter can be n ^ ier tia nuia or E_ide des We. attach the kpiece, whereby the e-rforaerliehe xtand-

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distance for the installation is getting smaller »In many palls is this is of the utmost importance

Induced _# so far as already described above erw & lirvfc, dae Ubliohe rolling of the thread naoh the running or the fiiefen of the thread after thread cutting destruction of the threads and an expansion in this area · Therefore, a recess with a diameter was necessary, which was slightly larger, as the largest Durohmesser of the Wei-kstückbohrung to accommodate the deformed and expanded head part of the insert in the workpiece. can · In addition, the wall of such a recess is not threaded, but smooth | therefore only a part of the external thread of the insert can be brought into engagement with the threads of the workpiece bore

In the execution form of Pig. 5 and 6, after the insert body 15 is provided with an inner bore 16, recesses 25 in the longitudinal direction q.uer over the successive ends Thread turns of the internal thread 19 drawn. i) the exceptions 25 serve the purpose of receiving a corresponding tool, not shown here, which rotates the body 15 of the insert screwed into the bore 22 of the workpiece · Of course, after the recesses have been cleared, across the internal thread 19 of the insert 15, the threaded hole of the insert can be reworked once to remove the turns that go through the pulling of the mutes were deformed to reshape.

Pig, Figure 7 shows the body 15 of the insert in the workpiece bore 22 screwed in and then the toothed head part of the insert outwards into the threads 24 of the workpiece Bore was advanced · When expanding the serrated

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Stuckes of the insert "the teeth 21 are embedded in the ffuQe of the Thereby one resistance comes against another Rotational movement of the stake and the stake is in that Workpiece 23 is permanently secured against unscrewing. The material of the workpiece immediately next to the outwardly driven teeth 21 (indicated here with dabbing) is compressed and solidified, increasing the resistance of the insert to torsional forces will be further strengthened "

In brief, the above-described inventive Insert manufactured in the following way: A solid hollow is shaped in such a way that it has a smaller one at one end Diameter than on the rest of the body. The narrower piece is grooved by rollers. Then the solid hollow ring is successively provided with a bore, a countersink and an internal thread Mistake.

After the internal thread is attached, the internal thread recesses are made in the longitudinal direction over the G-thread turns sucked. Then the grange of the internal thread can be reworked depending on the extent of the deformation Shows internal thread after clearing out the friction grooves. Essentially are the threads of the external thread on the center punch of the insert so; ie incised on the grooved piece, whereby mindeatnps the two uppermost threads with teeth protruding outwards be provided.

The workpiece in which the insert described above is to be installed is simply provided with a hole and an internal thread. Then the insert is screwed in with the help of a suitable tool. 'Home use in

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the desired delivery is inatalliert, daa geate piece ! of the insert near the outside in the bottom of the threads of the work-

stüokes driven in

! The Pig.8_i4 report a different design

shape of the insert shown in Pig. 1-7.

In the Pig .8 and 9 a billet 26a is shown »

! which springs from the blank of Pig. 1 and 2 and on its one At the end of a piece 26b with a smaller piece than the rest of the body 26a Has Durohmesser. The reconciled piece can be found in the

j manufacture as described with reference to the Iig, 1 and 2

In the Pig.io and 11 dei ¹ Hohling "else edited 26a in the same V / Hohling such as the Pig. 3 and 4f ie in the region of the narrower track 26b are mounted longitudinal grooves 27, further comprising the Hohling is provided with a bore 28 26a _t ao that the insert body has arisen 26th The bore 28 has

j a double or two-stage indentation 29 'the outer ' JIqII 3o wider than the inner part 31, 'both!' parts are aligned with each other in the longitudinal direction. As with the use of the Pig »3

! and 4 »is after the formation of the grooves 27 on the upper piece

the outside diameter of the insert is all the same.

Pig. 12 and 13 illustrate the full use. In Pig. 12 is the insert in the bore 32 of the workpiece 33 screwed in and connected to the threads 34 of the i '/ adapter hole in the Intervention shown. The insert is provided with an internal thread 35 and an external thread 36 is cut on its outside. As with the use of Pig. 5 and 6, the Threads of the external thread have been applied over the longitudinal grooves 27 of the body 26, creating multiple outwardly protruding teeth

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length of the upper turns of the thread 36 have arisen, xibenfallft according to the use of the 2? ig.5 and 6, the Durohmeaser over the tips and I ¹ UBe of the outwardly protruding teeth as well as the thread profile and the pitch of the thread 36 are grooved Piece of the insert the same as the corresponding dimensions on the (rewind passages 36 of the rest of the insert body β.

33er inner leil 31 of the recess 29 is with

a suitable tool (not inclined) so that inner grooves 38 arise, which extend from the lower end of the inner rope 31 to the lower end of the outer rope 30 of the binary anchorage. By clearing out the holes on the inner wall of the inner part 31 of the depression, a uniform and continuous depression is created, which has in its lower part . A suitable tool (not shown) can engage in the hats or grooves 38 to screw the insert into the hole 32 of the workpiece *

In Pig. 14 is the insert in the G-threaded bore 32 of the workpiece is shown screwed in after the toothed piece of the insert 26 and thus also the teeth 37 after outside in the feet of the G-thread turns 34 of the workpiece bore will be. This is a. Block another one Rotary movement created, as with the use of the Pig. 7 explained. It should be noted that the expansion of the tooth-bearing piece outward by the application of the inner grooves 38 in the ■ lower rope of the depression 29 is not adversely affected.

The course summarizes the use according to the invention manufactured in the last-described embodiment in the following manner; A solid blank is shaped in such a way that it has a smaller diameter at one end than at the rest

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Body. The narrower piece is then grooved by rolling Mistake. Then a bore and a countersink are made in the hollow attached with a two-stage countersink, so that a two-stage recess with a slightly wider outer rope and a narrower inner part is created «The wall of the inner part of the depression is then cleared out or grooved, so that inwardly protruding grooves arise from the base of the inner part of the depression to the base of the outer one Part of the recess is enough · In this way, recesses are formed for the engagement of a tool, which in the lower part of the Depression are arranged and extend only over a piece in the longitudinal direction.

After pulling it, the insert is drilled provided with an internal thread. Then an external thread is made along the entire length of the insert, including the grooved piece appropriate. By cutting threads on the grooved piece of the insert arise along the Q-thread ridges outwardly protruding teeth that are superimposed on the grooved area *

The workpiece in which the insert described above is to be installed is provided with a bore and an internal thread using conventional tools. The insert is screwed into the threaded hole of the workpiece using a suitable tool which engages in the grooves of the insert. When the insert is installed at the desired depth in the workpiece bore, the toothed part of the insert is driven outwards into the feet of the G-thread passages of the '« _& e ^ en

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there is no twisting in the workpiece bore "

In the case of the undue design shown, there are flat designs the use according to the invention is only at one end with a toothed, outwardly expandable locking part verse hen. Of course, narrower pieces can be provided at both ends of the insert, which are then corrugated accordingly will. In this pail, outwardly protruding teeth are formed when the external thread is applied at both ends of the insert, which have the same dimensions and properties as described for the teeth on the inserts shown. A workpiece bore without countersinking can also be used for such an application in the same way as described above will"

The exemplary embodiments of the invention which have been explained serve the purpose of illustration. Various amendments are in the handle of the inventive idea and within the scope of the Uiafang of the attached claims possible.

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Claims (1)

Claims JIf 1. Eineatz with an expandable head part »that in one piece is formed with the body of the insert and for locking the insert in a bore of a workpiece serves} marked duroh a cylindrical body (15,26) with an axial ßewindebohrung (16,28) and an adjoining depression (18,29) is provided, duroh an external thread (20,36) on the cylindrical body, the same thread diameter, smooth core diameter, same pitch and the same over its entire length Profile has, through locking elements on the outer surface of the body opposite the area of the recess (18,29) and through recesses on the body for engaging a tool when screwing the body into a workpiece bore. 2. Use according to claim 1, characterized in that the locking elements are pyramid-shaped teeth (21,37), which sit along the threads of the external thread, the maximum diameter, measured across the teeth, not being larger is ale the thread diameter of the external thread and that 909823/0671 Tooth profile and the dimensions of the teeth are the same as the G-thread profile and its cross-sectional dimensions are. 3. Use according spoke 2, characterized in that the Teeth (21,37) of segmented G-evvine passages are formed. 4. Use according to claim 3, characterized in that the Recesses for the tool consist of longitudinal grooves (25), which cut through the threads of the internal thread of the insert. 5. Use according to claim 3, characterized in that the Recesses for the tool made of line grooves (38), which are arranged in the lower part (31) of the recess on the hole in the insert. (iag.H). 6. Use according to one of claims 1 to 5 in connection with a workpiece which has a threaded bore, characterized in that the one I ¹ part of the insert, aer on the external thread, the locking elements, z.ß, zaxine, carries in the feet The G-thread turns of the workpiece bore is widened so that the teeth dig into the thread feet and lock the insert in the workpiece bore against further movement of the body. 7 · Yerfaiiren for making an insert after an aer Claims 1-6, characterized by the following 909823/0671 steps * Production of a solid cylindrical blank that is at least has a piece of smaller diameter at one end, Section applying longitudinal grooves on the narrower of the xioh- lings, Making an axial hole in the blank, forming a liner in the blank that adjoins the axial Borehole adjoining Making an internal thread in the axial bore, forming recesses for the engagement of tools, which pull through the threads of the internal thread in the longitudinal direction, and Application of an external thread on the grooved area and at least on a piece of the remaining outer surface of the Insert body. 8. The method according to claim 7> characterized in that ax ran on the outside of the insert in such a way that the maximum diameter did not run across them is larger than the diameter of the rest of the hollow ring and that the external thread is designed in such a way that the thread diameter, the core diameter knife, the profile and the slope remains the same over the entire length of the diaper. " S. The method according to claim 7 »aaaurca characterized, uaii o.ie Grooves are formed by rolling grooves and dt * s is ground in. 909823/0671 BAD Ci ■ '··>! 10. The method according to claim 7 or one of the following, characterized characterized in that the countersink on the bore aea insert In two stages, another outer one is carried out and a narrower inner part and dsX on the wall of the running inner grooves attached to the inner part of the submission will. 11. Yeri honors na on claim 1o, u thus gekemizeichnet that the Internal grooves due to browning of the wall of the inner part of the Depression are formed. 909823/0671