DE95706C - - Google Patents
Info
- Publication number
- DE95706C DE95706C DENDAT95706D DE95706DA DE95706C DE 95706 C DE95706 C DE 95706C DE NDAT95706 D DENDAT95706 D DE NDAT95706D DE 95706D A DE95706D A DE 95706DA DE 95706 C DE95706 C DE 95706C
- Authority
- DE
- Germany
- Prior art keywords
- tip
- workpiece
- thread
- sharp
- gradually
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000005520 cutting process Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/02—Thread cutting; Automatic machines specially designed therefor on an external or internal cylindrical or conical surface, e.g. on recesses
- B23G1/04—Machines with one working-spindle
- B23G1/06—Machines with one working-spindle specially adapted for making conical screws, e.g. wood-screws
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling, Drilling, And Turning Of Wood (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Description
KAISERLICHESIMPERIAL
K PATENTAMT.K PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
KLASSE 49: Metallbearbeitung, mechanische.CLASS 49: Metalworking, mechanical.
GUST. WEBER in GEVELSBERG.GUST. WEBER in GEVELSBERG.
Verfahren und Vorrichtung zur Herstellung von Holzschrauben mit langer SpitzeMethod and device for making wood screws with a long tip
und scharfem Gewinde.and sharp thread.
Patentirt im Deutschen Reiche vom 16. Mai 1897 ab.Patented in the German Empire on May 16, 1897.
Es war bisher nicht möglich, Holzschrauben auf mechanischem Wege herzustellen, bei welchen sich scharfes Gewinde bis über eine entsprechend lange Spitze erstreckte. Um die Gewindegänge auch an der Spitze scharf zu gestalten, mufste man das nach vorn hin verjüngte Messer zu tief einschneiden lassen, so dafs die Spitzen der Bolzen ziemlich stumpf abgeschnitten wurden. Liefs man das Messer weniger tief eingreifen, so blieben zu breite Gewindegä'nge stehen.Up to now it has not been possible to manufacture wood screws by mechanical means, in which sharp thread extended over a correspondingly long tip. To the To make threads sharp at the tip too, you had to taper towards the front Let the knife cut too deeply so that the tips of the bolts are rather blunt were cut off. If you let the knife reach less deeply, it would be too wide Threads stand.
Dieser Uebelstand ist durch nachstehend beschriebenes Verfahren und die gezeichnete Vorrichtung in einfacher Weise beseitigt. Das Verfahren besteht darin, dafs die Gewindegä'nge an der Spitze der Schrauben nach und nach enger gestaltet werden. Letzteres wird dadurch erreicht, dafs man den Vorschub des Werkstückes oder des Schneidstahls in Richtung der Werkstückdrehachse beim Bearbeiten der Spitze allmählich verlangsamt. Es ist dadurch ermöglicht, die Gewindegänge bis zur Spitze scharf zu gestalten, ohne dafs der Gewindeschneidstahl zu weit gegen das Arbeitsstück vorgeschoben zu werden braucht. Der Vorschub des Werkstücks oder des Stahls wird durch eine Curvenscheibe s bewerkstelligt. Die Curve der Scheibe s steigt nicht geradlinig an, sondern ist gekrümmt, so dafs der Vorschub nach und nach ein geringerer wird.This inconvenience is eliminated in a simple manner by the method described below and the device shown. The method consists in making the threads at the tip of the screws gradually narrower. The latter is achieved by gradually slowing down the advance of the workpiece or the cutting steel in the direction of the workpiece axis of rotation when machining the tip. This makes it possible to make the thread turns sharp up to the tip without the thread cutting steel having to be pushed too far against the workpiece. The feed rate of the workpiece or of the steel is accomplished by a curve disk s. The curve of the disk s does not rise in a straight line, but is curved, so that the advance gradually becomes less.
Der grofse Vorzug der auf diese Weise hergestellten Schrauben ist der, dafs sie sich, auch wenn sie einen grofsen Durchmesser haben, ohne Weiteres, d. h. ohne dafs ein Vorbohren nöthig ist, mit Hülfe eines Schlüssels durch die Hand einschrauben lassen.The great advantage of screws made in this way is that they can also be used if they have a large diameter, without further ado, d. H. without pre-drilling it is necessary to screw it in by hand with the help of a wrench.
Claims (1)
Eine Vorrichtung zur Ausführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, dafs das Arbeitsstück (oder das Werkzeug) durch eine Curvenscheibe vorwärts bewegt wird, bei welcher der Anstieg der Curve ein nach und nach geringerer wird.Process for the production of wood screws with a long tip and a sharp thread, characterized in that the feed of the workpiece or the thread steel in the direction of the workpiece axis of rotation is gradually slowed down when machining the tip, so that the threads become narrower towards the tip.
A device for carrying out the method according to claim 1, characterized in that the work piece (or the tool) is moved forward by a cam plate, in which the slope of the curve becomes gradually less.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE95706C true DE95706C (en) |
Family
ID=366923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT95706D Active DE95706C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE95706C (en) |
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0
- DE DENDAT95706D patent/DE95706C/de active Active
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