CS201843B1 - Instrument for lathing - Google Patents
Instrument for lathing Download PDFInfo
- Publication number
- CS201843B1 CS201843B1 CS696278A CS696278A CS201843B1 CS 201843 B1 CS201843 B1 CS 201843B1 CS 696278 A CS696278 A CS 696278A CS 696278 A CS696278 A CS 696278A CS 201843 B1 CS201843 B1 CS 201843B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- plate
- smoothing
- knife
- tool
- roughing
- Prior art date
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- Turning (AREA)
Description
Predmetom vynálezu je nástroj na sústruženie najma dlhých válcových ploch.The object of the invention is a tool for turning particularly long cylindrical surfaces.
Doterajšie klasické riešenie obrábania válcových ploch súčiastok spočívá v použití uberacích nožov s určitým polomerom zaoblenia hrotu. Pri obrábaní pomocou takýchto nástrojov platí pre výsledná drsnost obrobeného povrchu známy vztah Rmax = θ kde s je velkost posuvu a re je velkost poloměru zaoblenia hrotu noža. Tento vztah obmedzuje použitie vyšších posuvov, pretože výsledná .drsnost rastie so stúpajúcim posuvom kvadraticky. lnou možnosťou zvýšenia produktivity obrábania je zváčšovanie poloměru zaoblenia hrotu noža. Aj pre velkost tohoto parametra však existuj ú obmedzenia, ktoré vyplývají! z přechodu do oblasti minimálnej hrůbky triesky a s tým súvisiaceho chvenia v sústave stroj-nástroj-obrobok. Tieto skutečností vedú k závěru, že pre obrábanie velkých prídavkov poloměr hrotu noža nie je možné příliš zváčšoviať.The current conventional solution for machining cylindrical surfaces of components consists in the use of removable blades with a certain radius of rounding of the tip. When machining with such tools, the resulting roughness of the machined surface has the known relationship R max = θ where s is the feed rate and e is the radius of curvature of the knife tip. This relationship limits the use of higher feeds because the resulting roughness increases quadratically with increasing feed. Another possibility to increase machining productivity is to increase the radius of curvature of the knife tip. However, even for the size of this parameter there are limitations that result! from the transition to the minimum chip depth area and the associated shaking in the machine-tool-workpiece system. This leads to the conclusion that the radius of the knife tip cannot be increased too much for machining large oversizes.
Uvedené problémy rieši nástroj podlá vynálezu s jednou hrubovacou a jednou hladiacou režnou platničkou, ktorého podstata je, že režná platnička má tvar normálneho uberacieho noža a hladiaca má tvar kruhového noža, pričom vzdialenosť hrotov oboch platničiek je úměrná posuvu podlá vztahu: 1 = k .The above-mentioned problems are solved by a tool according to the invention with one roughing and one smoothing cutting plate, the principle being that the cutting plate has the shape of a normal removal knife and the smoothing knife has the shape of a circular knife.
gg
-y, kde k je lubovolné nepárne celé číslo.-y, where k is any odd integer.
Na obr. 1 je znázorněný princip riešenia združeného nástroja, na obr. 2 a 3 sú varianty usporiádania kruhovej platnióky.In FIG. 1 shows the principle of the solution of the associated tool, FIG. 2 and 3 are variants of an arrangement of a circular plate.
V telese 1 je mechanicky upevněná vyměnitelná platnička 2 a 3, pričom platnička 2 je fixovaná pomocou upínacej skrutky 4 a platnička 3 pomocou kolíka 5. Vzdialenosť hrotov oboch platničiek je volená podlá . vztahu gA replaceable plate 2 and 3 is mechanically fixed in the body 1, the plate 2 being fixed by a clamping screw 4 and the plate 3 by a pin 5. The spacing of the tips of the two plates is chosen accordingly. relationship g
= k . . Ak k je nepárne celé číslo, napr. 3,= k. . If k is an odd integer, e.g. 3
5, 7 . . . odřezává platnička 3 hroty nerovností, ktoré vznikajú od platničky 2. Prídavok na obrábanie je rozdělený na část hrubovaciu tt a hladiacu t2.' Aby nedochádzalo k chveniu v technologickej sústave, musí byť kruhová platnička skloněná oproti osi obrobku 6 o uhol sklonu reznej hrany λ. Tento uhol móže byť kladný alebo záporný a jeho hodnota je 30 až 45°.5, 7. . . the cutting 3 cuts the spikes of the unevenness that arise from the cutting plate 2. The machining allowance is divided into a roughing section t t and a smoothing section t 2 . In order to avoid shaking in the process system, the circular plate must be inclined relative to the workpiece axis 6 by the cutting edge inclination angle λ. This angle can be positive or negative and is 30-45 °.
Nástroj tohoto typu možno použiť pri obrábaní za podmienok niekolkonásobne vyšších posuvov ako pri normálnom sústřužení. Pri hladení dlhých obrobkov postačuje použiť hladiacu kruhovú platničku.A tool of this type can be used for machining under conditions of several times higher feeds than normal turning. When polishing long workpieces, it is sufficient to use a smoothing plate.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS696278A CS201843B1 (en) | 1978-10-26 | 1978-10-26 | Instrument for lathing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS696278A CS201843B1 (en) | 1978-10-26 | 1978-10-26 | Instrument for lathing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS201843B1 true CS201843B1 (en) | 1980-11-28 |
Family
ID=5417863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS696278A CS201843B1 (en) | 1978-10-26 | 1978-10-26 | Instrument for lathing |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS201843B1 (en) |
-
1978
- 1978-10-26 CS CS696278A patent/CS201843B1/en unknown
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