DE1736317U - KNIFE HEAD WITH ADJUSTABLE KNIVES. - Google Patents

Description

P.Ä.5SG 851 * 15.10.56

October 15, 1956

Karl Roß »BargteheIde / Holsteint An der Bahn knife head with adjustable knives

The present renewal relates to a cutter head, as used in particular in woodworking for cutting of bevels and rebates are common, the knives are adjustable or «interchangeable in a known manner. In such devices, it is necessary that the Knives on the one hand can be adjusted, fixed and deployed easily and quickly depending on the desired profiles. Farther It is important that the case time (setting time) is as short as possible. Finally the knives roll in Wear can be easily replaced. Adjusting the opposite knife on the knife head to achieve a clean milling surface (surface quality) and to avoid it every unbalance of the head must be uniform. After all, the knives have to be used especially with fast moving ones Machines sit firmly and securely in the cutter head during operation.

There are numerous different binary directions for adjusting the knives has been proposed, inter alia, it is known to provide the knives with a toothed ring on their mocha side, whereby ,, Then the adjustment of the knife with the help of a rotatable Adjusting ring should be done. Such a device has the disadvantage that between the thread of the adjusting ring and the The ring gear of the knife easily has a play. This means, that the knives are unbalanced within the head, have uneven flying crescent diameters and as a result the not exactly matching profile slope inaccurate and In addition, the play between setting

ring and ring gear of the knife and the associated dead song »that the desired F & senwinksl can only be set imprecisely and time-consuming trial milling is required to finally determine the required bevel angle. Inabesonder © also often cause difficulties when changing the knife if the Irsat knives are not worked with the highest precision. However, due to the hardening process of the knives, slight warping of the pre-milled knives is inevitable. In particular, with knives with a toothed ring on the back, difficulties arise when they are to be renewed.When replacing or renewing d & T knives, the knife head must be sent from the customer to the manufacturer in order to fit the new knives precisely. This is naturally time consuming and costly.

The essence of the new cutter head is that

di © replaceable knives fixed in the head on hers The back is provided with round lugs that can be swiveled into the corresponding round recesses of a spindle nut » which can be moved up and down by a visual spindle is. The spindle and thus the spindle nut is through the tightening of the iräsdommut of the machine in its set Itage fixed immovably. This means that the milling r knife held at the set angle

The accompanying drawings illustrate an embodiment of the new cutter head, namely shows

1 the cutter head in section, Fig * 2 is a plan view.

The new cutter head consists of a hollow screw spindle 1 which, in a known manner, can be placed on the rotating axis a woodworking machine is used. At its end protruding from the actual cutter head carries the screw spindle the adjusting ring 2, which is provided with graduation to the knives can be set to the desired one at any time

Angle through. ! To be able to turn by hand. It is not necessary to remove the cutter head from the woodworking machine spindle for adjustment · This saves a considerable amount of time. The head is always well balanced. On its outside, the screw spindle has the thread 3 which engages in a spindle nut 4. This spindle nut, which has roughly the shape of a ring encompassing the spindle, is fluted on its outer circumference at the points where it is intended to hold the knife, as can be seen in the drawing at 5, these flutes take the round rearward 6 approaches the knife 7 · the blade itself, whose cutting edges are visible on the drawing at 8 are pivoted about the journals'%. The pin 9 goes through the knife and is held in the knife body. This ensures a form-fitting · knife attachment and complies with the gate scripts of the professional association.

By turning the adjusting ring 2, the screw nut 4 "can be moved up or down, as can be seen. As a result, the knives 7 are swiveled around the pins 9, with the round rear extensions 6 of the knives rotating in the recesses 5 of the spindle nut 4" As a result, the position of the knives, namely all knives located on the circumference of the knife head, is changed at the same time, namely by the same angle. As indicated in the drawing, there is a range of
up and down available *

indicated, there is a range of 90 ° for pivoting the knife

As can be seen, with the help of the new adjustable cutter head, bevels and bevels of all angles can be milled, so that the new head can be used in general in building and furniture joinery as well as in vehicle or shipbuilding. The knives can be quickly and evenly adjusted without any effort or exchanged as required · Me knives are absolutely stuck even at high machine speeds. Any Sraatsaa eaters fit easily, as the round recess in the spindle nut always ensures that the knives are securely cut.

Claims (1)

RA.5S685145.10.56 go to s ρ ruo h Cutter head with adjustable knives »especially for woodworking milling machines, characterized in that the interchangeable knives (7) are provided with round attachments (6) on their base side» which are swiveling in round recesses (S) of a spindle nut (4) can be adjusted upwards and downwards by means of a visual spindle (l) *