YASDA ENGINEERING SERVICE / Precision Vice

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Accuracy List

YPV SERIES dimension table

Catalog download(PDF)

YASDA's precision Vice makes a significant contribution to the machining of precision parts, molds, and dies which require high-precision grinding

Current mechanism of the vices was unable to fit jaws securely while clamping work pieces, and thus, precise machining was not expected. YASDA's YPV series precision vices completely prevent insufficient fitting of work pieces and clamp the work pieces extremely precisely.

Wedge nut structure prevents insufficient fitting of work pieces
The wedge nuts built with the slider, which fastens the jaw, create downward force and pull down the jaw in proportion to the clamping force of the jaw so as to prevent the work piece from moving up.
The wedge nut mechanism creates large and accurate clamping force.

《Advantages》

YASDA's precision vice demonstrates the following effects of the wedge nuts function by clamping work pieces

●	Preventing the work piece from moving up and keeping it fitted as downward force is given to the movable sleeve.
●	Clamping the work piece with no more than appropriate force.
●	Finally, clamping the work piece securely as the movable unit and the wedge nuts clamp the sliding face.

Minimal strain to the work piece.

Unnecessary to hit the work piece from the top as it is properly fitted.

Therefore, the work piece is not damaged.

Wedge nut mechanism prevents the work pieces from moving up, and thus, further higher and more accurate clamping force can be created

In proportion to the jaw clamping force, the wedge nuts built into the slider, which fastens the jaw, create downward force and pull down the jaw, so as to prevent the work piece from moving up completely and to maintain accurate clamping.

　ACCURACY LIST

■Static accuracy

●Parallelism between frame's bottom face and sleeve's sliding face

…0.004 per 100mm

●Parallelism between both clamping faces of fixed sleeve

…0.015 per 100mm

●Perpendicularity of fixed sleeve's clamping face and sleeve's sliding face

…0.010 per 100mm (smaller than a right angle)

●Perpendicularity of side face of guide block of frame bottom and fixed sleeve's clamping face

…0.008 per 100mm

●Parallelism between side face of guide block of frame bottom face and fixed sleeve's clamping face

…0.008 per 100mm

■Dynamic accuracy

●Parallelism between upper face of clamped test block and frame bottom face

…0.008 per 100mm

●Gap at the upper face of clamped test block

…0.005

■The accuracy can be maintained even with parallel specification.
Please specify the parallel specification when ordering.

YPV SERIES dimension table

Mark Model	A	B	C	D	E	F	G	H	J	K	L	M	N	P	Q	R	S	T	U	V	Weight
YPV-80	65	53	90	80	81	33	14	120	260	90	350	55	12	120	30	80	65	15	45	M8	14kg
YPV-100	75	93	100	100	101	43	14	135	300	100	400	60	14	145	35	100	83	15	55	M10	22kg
YPV-125	80	131	115	125	126	46	18	155	400	120	520	65	19	240	40	160	96	20	56	M12	40kg
YPV-180	100	191	155	180	181	66	18	205	500	150	650	85	24	300	50	250	130	25	75	M16	100kg