RU2228839C2 - Milling head - Google Patents

Abstract

FIELD: wood-working industry, wood plaining for manufacture of joiner's and furniture articles. SUBSTANCE: the head has a tapered body with knives and wedges installed in it. The knives and wedges are placed in an integral body, having the shape of an isosceles trapezoid diametric to the groove with provision of rotation of the milling head in both sides, depending on the sharpening of the knives, having an increased length making it possible to squeeze the knife by two wedges. The knives may have a beveled shaped profile. EFFECT: lightened structure and enhanced reliability. 2 cl, 3 dwg

Description

The invention relates to the woodworking industry and can be used for planing wood in the manufacture of parts for carpentry and furniture products.

Known a milling cutter containing a conical body, with double-edged knives installed in it having long and short cutting edges, the long cutting edges of adjacent knives being installed in the body with incomplete axial overlap, and short ones in the section of the conical surface of the body [1]. The disadvantage of this cutter is the difficulty in manufacturing.

The objective of the invention is to simplify the design and facilitate operation.

This is achieved by the fact that the knives and wedges are placed in one made case, having the shape of an isosceles trapezoid with a diametral groove, allowing the milling head to rotate in both directions depending on the sharpening of the knives having an increased length that allows one knife to be clamped with two wedges. This milling head is easy to manufacture and more technological; the large length of the knife allows you to clamp the knife more securely with two wedges; more reliable fastening is carried out due to the balance between centrifugal and centripetal forces. Figure 1 shows the milling head, a top view; figure 2 is a straight view; figure 3 is a view of the workpiece of the knife.

The milling head consists of a housing 1, into which two knives 2 with a beveled shaped blade are inserted, the knives are pressed with wedges 3, two hexagon wrench bolts 4 are screwed into each wedge, which are supported in blind holes 5, the milling head housing is fixed to the shaft with a sleeve 6, which can be inserted or screwed into the bottom of the trapezoidal groove 7.

The milling head operates as follows. The bolts 4 are screwed into the threaded hole, which is located in the wedge 3, resting on a blind hole 5, presses two knives 2 against the side surfaces of the trapezoidal groove 7.

Mounting on the shaft of the milling machine, the milling head is carried out using the sleeve 6. When feeding wood (material) to the rotating milling head, the knives 2 cut the machined surface with a beveled blade, forming the necessary profile on it.

The presence of the sleeve 6 allows you to put on a bearing to obtain a profile along a curved surface.

Sourse of information

1. USSR author's certificate No. 1782732, B 27 G 13/02.

Claims (2)

1. A milling head comprising a conical body with knives and wedges installed in it, characterized in that the knives and wedges are housed in one diametrical groove having the shape of an isosceles trapezoid, allowing the milling head to rotate in both directions depending on the sharpening of the knives having an increased length that allows you to clamp one knife with two wedges. 2. The milling head according to claim 1, characterized in that the knives have a beveled shaped profile.

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