Detailed Product Description

These lathes were developed mainly for the truning of oil-field pipe threads.They are suitatle ofr the turning of various kinds of pipe threads,andare also can be used as universal CNC lathes.

    These CNC pipe thread lathes are controlled by semi-closed circle controlling systems.They are suitable for the turning of circumgyration bodies of various curving generatrixes,the turning distinguishability is 0.001mm.They can be used to the turning of cylindrical and conical threads,and threads connected continuously by them,and end-face threads as well,They have functions of automatic tool compensation,rough-turned piece circle,thread-cuttig circle,slotting circle,and absolute zero can be set at your will.These machines are suitable for varified workpieces machining in medium and small batches,and are of good flexibility,high efficiency,finishing up with good conformity,and are easy to program,simple to operate.So they are ideal medium-type mechanical machining equipment.

Main specifications				QKA1212	QKA1219	QKA1226	QKA1235
Capacities
Cente height r from guideway			mm	385		500	550
Swing over bed			mm	770		1000	1100
Swing over carriage			mm	480		630	730
External diameter of pipes		Manual chuck	mm	Φ120	Φ190	Φ70-260	Φ114-340
		hydraulic chuck	mm
		pneumatic chuck	mm
Max.length of workpiece			mm	750 1000 1500 2000 3000		1500 3000 5000
Max.cutting length			mm	550  800  1300 1800 2800		1300 2800 4800
Span of guideway			mm	550		755
Spindle
Step of spindle speed		three-phase asyn-chronous motor		,16	,8
		variable frequency variable speed motor				,	,
Range of spindle speed		three-phase asyn-chronous motor		25800	90450
		variable frequency variable speed motor				6400	5320
Power of main motor		three-phase asyn-chronous motor	kW	11
		variable frequency variable speed motor	kW			18.5
Diameter of spindle bore			mm	130	200	275	355
Chuck type		Manual chuck		3-jaw Φ380	3-jaw Φ500	4-jaw Φ630	4-jaw Φ780
		hydraulic chuck
		pneumatic chuck
Feed motion
Min.feed increament of X-/ Z-axis			mm	0.001/0.001
Rapid speeds of X-/Z-axis			mm	3000/6000
Max.travel of X-axis			mm	390		520
Tool post
Turret type				V4 240		V4 300
Size of tool shank			mm	32		45
turret indexing time			s	2.5		4
Indexing repeatability			mm	0.01
Tailstock
Diameter of tailstock quill			mm	100		160
Travel of tailstock quill			mm	250		300
Taper hole of tailstock quill			morse	Morse 5#		morse 6#
Accuracy and acceptance conditions
Workpiece accuracy				IT67
Surface roughness				Ra1.6