Middle HM-27 Manuel d'instructions télécharger pdf (Page 39)

Rotary Microtome HM 355 S

MICROM International GmbH

Robert-Bosch-Str. 49

D- 69190 Walldorf

2-12-3 KNIFE CARRIER C

a) Inserting the knife

To insert the knife, the clamping screws (fig.

16.10) must be unscrewed slightly so the knife can

be pushed in from the side. The height of the knife

is adjusted with the two knurled nuts (fig. 16.6) and

the bar (fig. 16.7). If the cutting zone of the knife

cannot be used anymore, it can be moved over its

entire length to the left and right side by loosening

the clamping screws. This allows an optimal use of

the entire knife edge.

CAUTION! When clamping the knife, please

tighten the two clamping screws (fig. 16.10)

simultaneously.

b) Adjusting clearance angle

The clearance angle between cutting edge and

specimen can be shifted and adjusted to the

requirements of the tissue to be sectioned. Loosen

the clamping lever (fig. 16.4) on the right side of

the knife carrier and move the upper part of the

knife carrier (fig. 16.2) on the base (fig. 16.1). The

adjusted clearance angle can be read on the side

scale. Then turn the clamping lever (fig. 16.4)

upwards to lock in the new clearance angle.

NOTE! By experience, usable cuts are only

achieved at a clearance angle of 10° or more.

If the clamping lever (fig. 16.4) is loosened, the

upper part of the knife carrier can be moved

1 cm to the left or right side. This way, the cutting

edge can optimally be used.

c) Moving the knife carrier on the

dovetail guide

Loosen the clamping lever (fig. 16.5) on the left

side of the knife carrier to move the carrier

forwards and backwards on the dovetail guide.

This allows a rough adjustment of knife and

specimen.

d) Protection against injury

The knife carrier is equipped with two knife guards

(fig. 16.9) which can be moved sideways. These

knife guards should be pushed together in the

middle while adjusting knife or specimen. This

reduces the danger of injury considerably.

e) Central clamping plate

The knife is clamped and stabilized in the cutting

zone by the central clamping plate (fig. 16.8.1,

16.8.2) - exactly where the highest cutting forces

are applied.

NOTE ! Two types of clamping plates are

available for the knives:

clamping plate c for c-knives,

clamping plate d for d-knives.

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Middle HM-27 Manuel d'instructions Page 39

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