GB2227971A

GB2227971A - Bevelllng apparatus for use with a wood thicknessing machine

Info

Publication number: GB2227971A
Application number: GB8901489A
Authority: GB
Inventors: Kenneth Dyson; Stuart James Dyson
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-01-24
Filing date: 1989-01-24
Publication date: 1990-08-15
Anticipated expiration: 2009-01-24
Also published as: GB8901489D0; GB2227971B

Abstract

Woodworking apparatus for use in combination with a thicknessing machine to produce a bevelled surface on a length of timber 12 consists of a base 24 adapted to rest on the work table of the thicknessing machine. A workpiece support 30 is pivotally connected at one side to the base and can be locked in adjusted position relative to the base so that the length of timber resting against a fence 56 mounted on the support can have a bevelled surface formed thereon which corresponds to the angle between the support and the base of the apparatus as the timber is passed through the thicknessing machine. <IMAGE>

Description

Improvements in or relating to Woodworking Apparatus This invention relates to woodworking apparatus and more particularly, but not exclusively, to woodworking apparatus for use in combination with a thicknessing machine.

A conventional thicknessing machine comprises a power-driven cylindrical cutter rotatable about the central axis and having one or more radially extending blades. The cutter is disposed above a work table of adjustable height relative to the cutter so that lengths of timber moved along the work table in a direction perpendicular to the axis of rotation of the cutter are machined to a predetermined thickness.A power-driven feed roller extending parallel to but spaced-apart from the cutter is provided on the input side thereof and a similar power-driver take-off roller is. provide C: },e output side of the rutter to facilitate the machining operation Where lengths of timber are to be used, for example, as architraves, beading or window sills, it is necessary to provide the timber with a bevelled surface portion on one side face thereof.

One known method of producing such a bevelled surface portion on the side face of a length of timber is to use a spind moulder but this often involves lengthy setting up mahing the use of a spindle moulder a tine. consuming and thus uneronomic machining operation.

The object of this invention is to piov: woodwnrking apparatus for use in combination with a thicknessing machine to economically produce a bevelled surface portion on a side face of lengths of timber.

According to one aspect of this invention, woodworking apparatus for use in combination with a thicknessing machine to produce a bevelled surface portion @@@@ one side face of a length of timber comprises a base supported on a work table of the thicknessing machine and an elongate workpiece support extending longitudinally beneath a cutter of the thicknessing machine, therein the workpiece support is pivotally connected to the base to enable the angle of the support relative to the plane of the work table of the thicknessing machine to be adjusted.

by, the ivOt I connection of the uprort to the back is disposed at or adjacent to one side thereof and extends longitudinally parallel to the longitudinal axis of the support.

Preferably, also, clamping means is provided for locking the support in adjusted position relative to the base.

The clamping means, preferably, locks the support to the base a. two or more positions spaced-apart longitudinally of the support to rigidly lock the support in adjusted position over the length thereof.

eferably, the support is urged by resilient means towards the position of maximum inclination relative to the base to facilitate adjustment thereof, Preferably, also, indicator means is provided to indicate the angle of inclination of the support relative to the plane of the worktable of the thicknessing machine.

A fence forming a guide for the length of timber to be machined is, preferably, mounted on the support.

ferably, the fence extends longitudinally of the support arc the position thereof on the support is a Preferably, also, the fence has upwardly extending edge positions at each side edge which are of different heights to accommodate different thicknesses of timber and the fence is adapted to be mounted on the support so that either end of the side edges can be used as a guide for the length of timber which is to be bevelled.

The support is, preferably, provided with two roller assemblies at two longitudinally spaced-apart positions theron which are arranged to be respectively positioned beneath a feed roller and a take-off roller of the thicknessing machine to facilitate the movement of the ength of timber during the machining operation.

Preferably, an adjustable stop is provided on the base which' is adapted to engage the end of the worktable of the thicknessing machine to locate the apparatus in the desired position thereon.

According to another aspect of this invention, a woodworking machine comprises a thicknessing machine having a woodworking apparatus according to said one aspect of this invention positioned thereon.

A preferred embodiment of this invention will now be described, by way of example only, with reference to the accompanying drawings, of which Figure 1 is a side elevation of a woodworking apparatus positioned on a thicknessing machine Figur e 2 is an end elevation of the woodworking apparatus; and Figure 3 is a plan view of the woodworking apparatus.

Referring now to the drawings, a thicknessing machine indicated generally at 10 for machining a length of timber 12 complises a power-driven cylindrical cutter 14 having two diametrically opposed radialy extending blades 16 disposed above a work table 18 of adjustable height. A power-driven feed roller 20 is mounted on the input side of the cutter 14 for drawing the timber 12 towards the cutter 1 and a power-driven take-off roller 22 is mounted on the output side of the cutter 14 for drawing the timber 12 thereflcim.

A woodworking apparatus indicated generally at 23 is mounted on the work table 18 and comprises a base indicated generally at 24 consisting of two spaced-apart U-shaped sections 26 connected together by a rod 28 extending therethrough.

A workpiece support 30 having downwardly depending ends 32 and intermediate flanges 34 is pivotally connected to the base 24 by pivot shafts 36. Helical coil torsion springs (not shown) are mounted on the shafts 36 and the ee ends of each spreing bear respectively against the base 24 a';-'- the support 30 to urge the support 30 to the position of maximum inclination relative to the base 24.

The support 30 is clamped in adjusted inclination relative in the base 24 by means of a clamping rod 38 having a screw-threaded end portion on which a boss 40 provided with a pivotable handle 42 s screwed. The rod 38 extends through an arcuate slot in the end 32 of the support 30 adjacent to the boss 40, through arcuate slots thereof ermediate flanges 34 of the support 3', through arcuate slots in the U-shaped sections 28 of the base 24, the the end of the rod 38 remote from the boss 40 is secured to the associated end 32 of the support 30 by a nut 44 and lock nut (not shown). Sleeves 46 are mounted on the rod 38 between the sides of each of the U-shaped sections 2S of the base 24 and between the intermediate flanges 34 of the support 30 so that tihgtening of the boss 40 results in the clamping of the support 30 to the base 24 at points spaced-apart along the length thereof.

A graduated scale 4 is provided on the sice of the U-shaped section 26 of the base 24 adjacent to the boss 40 which in combination with the lower edge of the associated end 32 of the support 30 indicates the inclination of the support 30 to the base 24.

The upper surface of the support 30 is provided with two spaced-apart roller assemblies indicated generally at 50 which each comprise three transversely extending rolls 2 to facilitate movement of the timber 12 along the support 30. h central plane portion of t upper surface of the support 30 between the roller assemblies 50 is provided with transversely extending rods 54 beneath the side edges. thereof to increase the strength and rigidity of this central portion A U-shaped fence 58 is mounted on the support 3C by means of blots 58 which screw into hank nuts 60 and the position of the fence 56 is rendered adjustable by the provision of slots 62 in the fence 58 and alternative hank nuts 60. The upwardly extending sides of the fence 58 are of different heights so that different thicknesses of timber 12 can be accommodated by reversing the fence 56.

An adjustable stop 64 is mounted on the end of the rod 28 and is adapted to contact the end of the work table 18 of the thicknessing machine 10 to retain the woodworking apparatus 23 in position thereon.

In operation, the apparatus 23 is positioned on the o' k tab e 18 of the thickness ing mac-h inc 10 Sn as to extend longitudinally thereof with the roller assemblies 50 respectively disposed beneath the associated feed roller 20 and take-off roller 22. The provision of three rollers 52 in each roller assembly 50 accommodates differences in spacing of the feed and take-off rollers on different thicknessing machines thus increasing the of the apparatus 23.

The adjustable stop 64 is positioned in contact with the input el.d of the wold: table 18 of the thicknessing machine 10 to retain the apparatus 2 in the above position relative to the feed and take-off rollers 20 and 22.

The angle of the bevelled surface which is required on the t imber 12 is set by pivotting the support 30 relative TO the base 24 about the shafts 36 to the desired angle indicated by the scale 43. The support 30 is then clamped in adjusted inclination relative to the base 24 by tightening the boss 40 on the rod 38 utilising the handle 42 which is then pivotted to one side so as not to obstruct the passage of the timber 12 through the machine.

The depth of cut taken by the cutter 14 and thus the width of the bevelled surface on the timber 12 is adjusted by the raising or lowering of the work table 18 of the thicknessing machine 10. Once this has been set, lengths of timber 12 are then passed through the thicknessing machine 10 in conventional manner to produce a bevelled surface thereon It will be appreciated the above described woodworking apparatus enables lengths of timber to be bevelled without requiring the lengthy setting up procedures involved when utilising, for example, a spindle moulder.

In addition, the woodworking apparatus can be use not only an thicknessing machines but also on other machine such as, for example, planing and thicknessing t h-c-Ct departing from the scope of this invention.

Claims

What we claim is :

1. Woodworking apparatus for use in combination with a thicknessing machine to produce a bevelled surface portion on at least one side face of a length of timber comprising a base supported on a work table of the thicknessing machine and an elongate workpiece support extending longitudinally beneath a cutter of the thicknessing machine, wherein the workpiece support is pivotally connected to the base to enable the angle of the support relative to the plane of the work table of the thicknessing machine to be adjusted.

2. Woodworking apparatus according to Claim 1, wherein the pivotal connection of the support to the base is disposed at or adjacent to one side thereof and extends longitudinally parallel to the longitudinal axis of the support.

3. Woodworking apparatus according to Claim 1 or Claim 2, wherein clamping means is provided for locking the support in adjusted position relative to the base.

4. Woodworking apparatus according to Claim 3, wherein the clamping means locks the support to the base at two or more positions spaced-apart longitudinally of the support to rigidly lock the support in adjusted position over the length thereof.

5. Woodworking apparatus according to any one of the preceding claims, wherein the support is urged by resilient means towards the position of maximum inclination relative to the base to facilitate adjustment thereof.

6. Woodworking apparatus according to any one of the preceding claims, wherein indicator means is provided to indicate the angle of inclination of the support relative to the plane of the worktable of the thicknessing machine.

7. Woodworking apparatus according to any one of the preceding claims, wherein a fence forming a guide for the length of timber to be machined is mounted on the support.

8. Woodworking apparatus according to Claim 7, wherein the fence extends longitudinally of the support and the position thereof on the support is adjustable.

9. Woodworking apparatus according to Claim 7 or Claim 8, wherein the fence has upwardly extending edge portions at each side edge which are of different heights to accommodate different thicknesses of timber.

10. Woodworking apparatus according to Claim 9, wherein the fence is adapted to be mounted on the support so that either one of the side edges can be used as a guide for the length of timber which is to be bevelled.

11. Woodworking apparatus according to any one of the preceding claims, wherein the support is provided with two roller assemblies at two longitudinally spaced-apart positions theron which are arranged to be respectively positioned beneath a feed roller and a take-off roller of the thicknessing machine to facilitate the movement of the length of timber during the machining operation.

12. Woodworking apparatus according to any one of the preceding claims, wherein an adjustable stop is provided on the base which is adapted to engage the end of the worktable of the thicknessing machine to locate the apparatus in the desired position thereon.

13 A woodworking machine comprising a thicknessing machine having a woodworking apparatus according to any one of the preceding claims positioned thereon.

14. Woodworking apparatus constructed, arranged and adapted to operate substantially as hereinbefore described with reference to, and as illustrated, by the accompanying drawings.

15. A woodworking machine constructed, arranged and adapted to operate substantially as hereinbefore described with reference to, and as illustrated by, the accompanying drawings.