在未加工齒形前的齒輪毛坯稱為齒坯。

根據(jù)齒坯形成的工藝不同，分為鑄造齒坯，鍛造齒坯和焊接齒坯。

有關(guān)應(yīng)用

刀具的標(biāo)準(zhǔn)安裝：用齒條刀具或齒輪插刀加工齒輪時(shí)，若齒輪毛坯的分度圓與齒條刀具的基準(zhǔn)線；或與插刀的分度圓分別相切，這時(shí)毛坯和刀具的相對安裝位置稱刀具的標(biāo)準(zhǔn)安裝。刀具標(biāo)準(zhǔn)安裝加工出來的齒輪是標(biāo)準(zhǔn)齒輪。

刀具的變位安裝：用齒條刀具展成齒輪時(shí)，若齒條的基準(zhǔn)線（中線）與齒輪毛坯的分度圓（節(jié)圓）不相切，這時(shí)刀具相對毛坯的安裝位置稱刀具的變位安裝。刀具基準(zhǔn)線與毛坯分度圓的徑向分離量mx稱變位量，x稱變位系數(shù)。變位安裝切制成的齒輪為變位齒輪。

齒條標(biāo)準(zhǔn)安裝：齒條安裝一般是指，齒條刀具加工齒輪時(shí)齒條刀具相對毛坯的安裝。所謂齒條標(biāo)準(zhǔn)安裝即齒條刀具的中線和毛坯分度圓（節(jié)圓）相切的安裝位置，否則稱齒條非標(biāo)準(zhǔn)安裝。齒條標(biāo)準(zhǔn)安裝加工出來的齒輪是標(biāo)準(zhǔn)齒輪。非標(biāo)準(zhǔn)安裝加工出來的齒輪是變位齒輪。

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The gear blank before the unmachined tooth shape is called a tooth blank.

According to different processes of forming the tooth blank, it is divided into a cast tooth blank, a forged tooth blank and a welded tooth blank.

Related applications

Standard installation of the tool: When machining the gear with a rack tool or a gear insert, if the index circle of the gear blank is perpendicular to the reference line of the rack tool, or if it is tangent to the indexing circle of the insert, then the blank and the tool are The standard installation of the tool is called relative to the mounting position. The gears that are machined and manufactured by the standard are standard gears.

Displacement of the tool: When the rack tool is used to form a gear, if the reference line (center line) of the rack is not tangent to the index circle (node circle) of the gear blank, the mounting position of the tool relative to the blank is called the tool. Displacement installation. The radial separation amount mx of the tool reference line and the blank indexing circle is called the displacement amount, and x is called the displacement coefficient. The gear that is cut and mounted is a displacement gear.

Rack standard installation: Rack mounting generally refers to the installation of the rack tool relative to the blank when the rack tool is machining the gear. The so-called rack standard installation is the installation position of the center line of the rack tool and the blank index circle (node circle), otherwise the rack is not standard installation. The gears that are standardly mounted on the rack are standard gears. Gears that are machined in a non-standard installation are gears.