SU923801A1 - Wood sawing frame - Google Patents

Description

Union of Soviet

Socialist

Republics

(Ludarstaoma Committee of the USSR

IN do inventions and discoveries

DESCRIPTION

Inventions

TO AUTHOR'S CERTIFICATE (61) Additional to author. certificate-wu (22) 3Approved 01.08.80 (21) 2968149 / 29-15 with the addition of the application M (23) Priority Published on 30.04.82. Bulletin No. 16 Date of publication of the description 30.04.82 (72) Authors of the invention (71) Applicant (ίο 923801 (51) M. Cl.

B 27 V 3/12 (53) UDC 621.933. .613 (088.8).

(54) SAW FRAME

The invention is intended for ,, sawing wood and can be used in the sawmill industry.

Known sawmill with a swinging saw frame, the lower cross member of which is pivotally mounted on the output links of planetary converters

Also known is a saw frame containing a bed, a drive with two planetary transducers, the axes of the satellites of which are kinematically connected with the brackets of the lower cross member of the saw frame, and a saw frame [2].

The disadvantages of the known frames are low productivity and poor sawing quality due to the limited spatial movement of the saw frame.

The purpose of the invention is to increase the productivity and quality of sawing by ensuring spatial movement of the frame with a plate along the most rational path,

This goal is achieved by the fact that the upper cross-section of the saw frame is connected to the bed using a _p- hinged four-link with a cantilever connecting rod and two korotalsla, the latter being pivotally mounted on the frame bed, and the connecting rod console - on the upper cross-section of the saw frame.

. In FIG. 1 shows a saw frame, a general view, in FIG. 2 is a diagram; lever’s system, in FIG. 3 - typical variants of the trajectories of movement of the upper and lower crossbars of the saw frame.

The saw frame contains a bed 1, an engine 2 and a saw frame 3. The lower cross-section of the saw frame 3 is pivotally mounted on the output links 4 of the planetary transducers 5, and the upper cross-section is soyedical in a strictly defined trajectory. The nature of the path of movement of the upper cross member of the saw frame 5 depends on the ratio of the arms of the connecting rod 22, the console 23 and the rocker arm 21, the length of the rocker arm 20 and their relative position relative to each other, and the lower cross member · on the ratio of the axial distances between the carrier 10 of the carrier 11 and satellite 9, satellite and finger 15, as well as the relative position of the finger relative to the satellite and satellite relative to the gear 8.

Thus, due to a certain ratio of leverage, interaxal distances and relative position of parts of planetary transducers and linkage system, the saw frame can be moved spatially along the most rational trajectory of its movement. The most characteristic options for the possible trajectories of motion of 25 upper O? ' - C ^, and the lower (X - C transverse order of the saw frame are shown in Fig.Z.

Errors in the motion paths of the output links of planetary transducers, caused by ₃₀ deviations in the dimensions of parts and adjustment errors, are compensated by the possibility of turning the yoke shaft 17 about its axis while maintaining the horizontal arrangement of the axes of the brackets 19. Due to this, the saw frame itself always maintains a strictly vertical position relative to the transducers.

The sawmill frame is almost completely balanced due to the counterweights 12 and 14 on the carriers and the axles of the satellites.

Good sawing quality is ensured by spatial movement of the saw frame along the ⁴⁵ most rational trajectory of movement, its strict following along this trajectory due to insignificant clearances in the rolling bearings, which are equipped with planetary converters ⁵⁰ and elements of the linkage system, as well as complete balancing of this frames from the inertia forces of moving masses.

Claims (1)

Formulas of the invention Frame saw comprising a frame, a drive, two planetary ³ 923801 dinena to the frame via a hinge quadrilateral Nogo · 6. Planetary transducers contain a housing 7, a gear 8 with internal gearing, a satellite 9 mounted on the axis 10, and led 11 with a counterweight 12 and a pulley. 13. The gear. the ratio between gear 8 and satellite 9 is 2: 1. The output links 4 of the planetary transducers 5 are combined with counterweights 14, are rigidly attached to the ends of the axles 10 of the satellites and contain pins 15. On the slots of the protruding ends of the fingers 15, a synchronizing shaft 16 is installed, and a hollow cross-beam G. 7, equipped with ends with two cranks. 18 oriented in diametrically opposite directions from its longitudinal axis. The cranks are pivotally connected to the brackets 19 made on the sides of the lower cross member of the saw frame 3. The articulated four-link 6 consists of a rocker arm 20 and 21, pivotally mounted on the frame 1, and a connecting rod 22 with the console 23,; which is hinged but connected with the upper cross member of the saw frame 3. Saw frame works as follows. When the electric motor 2 is turned on through the V-belt drive and the pulley 13, the planet carrier 11 of the planetary transducer 5 is driven into rotation, while the satellite 9 is on the gear wheel 8, and the fingers 15 connected to it, the synchronizing shaft 16 and the yoke shaft 17 reciprocate along rectilinear or elliptical trajectory. Together with the traverse shaft 17 performs ^: reciprocating motion and kinematically connected ΟιΗβή the lower cross-member of the saw frame. When moving the saw frame in the vertical direction, the connecting rod 22 is forced to rotate relative to the axis of the connection to the beam 20, and the beam 21 connected to the connecting rod 22 relative to the bed. Folding, these two turns provide the possibility of movement of the upper cross-section of the saw frame in the ver923801 transducers, the satellite axes of which are kinematically connected with the brackets of the lower cross-section of the saw frame, and the saw frame, characterized in that, with the aim of 5 increasing productivity and quality of sawing, the upper cross-section of the saw frame connected to the bed with the help of a four-link hinge with a cantilever connecting rod and two rocker arms, with the last balls6 mounted on a ravya frame and the connecting rod cantilever on the top crossbar of a saw frame.