Table of Contents
Summary of Contents for Narex Vhu 2 1/8"
- Page 1 Instruction Manual No.: 2420304 Universal Boring Heads Vhu 2 ”, 3 ”, 4 ”, 6 ¼ ” Producer: Moskevska 63 101 00 Praha 10 – Vrsovice Czech Republic Phone: +420 246 002 249 Fax: +420 246 002 335 e-mail: sales@narexmte.cz www.narexmte.cz...
- Page 2 OPERATING INSTRUCTIONS Vhu 21/8”, 31/8”, Vhu 47/8” and Vhu 6 ¼ ” Universal Boring Heads. Utilisation: The Vhu 21/8”, 31/8”,Vhu 47/8” and Vhu 61/4” universal boring heads can be utilised for boring, surfacing of front and rear facings, turning of external diameters, machining of external and internal recesses and cutting threads.
- Page 3 Fig. 1 – Hole boring Fig. 1 Ø d max. h max. Ø D max. Vhu 2.1/8" 6 1/4" 4 1/4" 9" Vhu 3.1/8" 8" 4 1/4" 11" Vhu 4.7/8" 11" 7 1/4" 15" Vhu 6.1/4" 13“ 7 1/4" 18“ Ød ØD Fig.
- Page 4 Fig.5 Recessing on surface Fig. 6 External turning ØD Fig. 5 & 6 Ø D max. h max. ØD Vhu 2.1/8" 10 3/4" 4" Fig. 8 Taper boring Vhu 3.1/8" 12 3/4" 4" Fig. 7 α/2 = 5º - 85º Vhu 4.7/8"...
- Page 5 Boring and turning of external diameters. When boring and turning external diameters the operator must avoid touching the breaking ring (1) which could cause an alteration of the set dimension. a) To achieve a rapid resetting of the tool slide (5) it is necessary to force an extension socket spanner into the internal hexagon of the dial for rapid feed motion (12) to a depth of approx.
- Page 6 The feed is adjusted by turning the engagement ring (2) so that the dial division filled with red paint will be set opposite the red paint filled hole of the respective number indicating the magnitude of the transverse feed in 0,0001in/rev. on the automatic transverse feed dial (16). The best way to engage the feed is to take the engagement ring by its indexed part between the thumb and index finger of the one hand while taking the breaking ring 1) with engaged clutch (15) between the thumb and index finger of the other hand, then setting required feed by...
- Page 7 e) By slowing down of the control ring (3), when the head is turning to the right, the tool slide (5) moves in the direction of both arrows situated on the tool slide side near the fine feed setting dial (4); when the head is turning to the left, the tool slide moves against the direction of the arrows.
- Page 8 d) Now loosen the trip dog (10) and push ir against the newly assembled feeler gauge abutting on the trip dog pin (11); then push the trip dog against the gauge and tighten firmly. e) Remove the trip dog and loosen the tool slide lock screw (9). The disengaging of the automatic transverse feed is vow set to the required diameter.
- Page 9 If the tool is clamped on the direction of the transverse feed of the tool slide, an expanding taper will be bored. If the same tool is clamped in the direction opposite to that of the transverse feed of the tool slide, a narrowing taper will be bored. When clamping the tool, be sure to set its point in the plane passing through the axes of the holes for rods and holders (7) –...
- Page 10 Also taper threads can be cut with the Vhu 21/8”, 31/8”, Vhu 47/8” and Vhu 6 ¼ ” boring heads. The axial feed for the lead of the thread is effected by the machine spindle and the transverse motion of the tool slide effects the thread cutting. Both feeds must be permanently engaged during thread cutting.
- Page 11 We are confident that the Vhu 21/8”, 31/8”,Vhu 47/8” and Vhu 6 ¼ ” universal boring heads will enable you to perform the most accurate and intricate operations on your boring machines. The Vhu 21/8”, 31/8”, Vhu 47/8” and Vhu 6 ¼ ” universal boring heads enable a large number of various operations which, however, require a wide choice of tools, which –...
- Page 12 VII. Exchangeable Clamping Taper Shank...
- Page 13 Diagram for taper boring with Vhu 2 1/8“, 3 1/8“, 4 7/8“ and 6 ¼ “...
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