US2591765A

US2591765A - Metal cutting machine

Info

Publication number: US2591765A
Application number: US717467A
Authority: US
Inventors: Anderson James
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-02-01
Filing date: 1946-12-20
Publication date: 1952-04-08
Anticipated expiration: 1969-04-08

Description

- April 8, 1952 r ANDERSON 2,591,765

METAL; CUTTING MAdI-IINE Filed. Dec. 20, 1946 5 Sheets-Sheet l ifizvczzztaz Jflnciem 0 2/ 1 wjzi J. ANDERSON METAL CUTTING MACHINE April 8, 1952 5 Sheets-Sheet 2 Filed Dec. 20, 1946 April 8, 1952 J. ANDERSON METAL CUTTING MACHINE 5 Shee ts-Sheet 3 Filed Dec. 20, 1946 v K Q T b 1 R E a) Lav 6177301 Q7 ciel aolz/ April 8, 1952 J. ANDERSON METAL. CUTTING MACHINE Filed Dec. 20, 1946 2 uHH Q\ April 8, 1952 J. ANDERSON 2,591,765

METAL CUTTING MACHINE Filed Dec. 20, 1946 5 Sheets-Sheet 5 of one of the supporting In the drawings a is ibearing brackets Patented Apr. 8, 1952 METAL CUTTING MACHINE James Anderson, Newton Mearns, Scotland Application December 20, 1946, Serial No. 717,467

In Great Britain February 1, 1946 2 Claims.

This invention has reference to metal cutting machines and particularly to facing, boring, turning and like machines.

The invention has for its object to provide a metal cutting machine whereby the usual heavy casting with overhanging tool supporting means is avoided and which will permit the tool or tools to be fed to the work to be operated on without any obstruction and irrespective of the direction of feed.

' Another object of the invention is to provide i proved means whereby the adjustment'of the tool or tools relative to the work can be easily and accurately made.

A preferred embodiment of the invention will 'now be described with reference to the annexed drawings wherein:

Figure 1 is a metal cutting machine having two slides carrying cutting tools, slide brackets and supporting means therefor all in accordance with the invention.

Figure 2 is a plan view of Figure 1 and Figure 3 is an end view thereof looking to the right.

Figure 4 is an elevation to a larger scale of one of the carrying slides, slide bracket and supporting means therefor.

Figure 5 is a view corresponding to Figure 4 but showing the tool carrying slide and slide bracket in section.

Figure 6 is an elevation of the tool carrying slide and slide bracket, occupying the vertical position.

Figure '7 is a view corresponding to Figure 6 but showing the tool carrying slide and slide bracket in section. I

Figure 8- is an end elevation of Figure 6, and Figure 9 is an end elevation partly in section brackets remote from the main supporting brackets.

the machine table, a a casing on which the table is mounted and which contains the motor, and a is a casing housing the controls of the machine.

5 .Supported on the machine table are two main each circumferentially adjustable with respect to its corresponding main bracket, and two transversely extending supporting members d, d each carried by a main supporting bracket 1) and a circumferentially adjustably supporting bracket 0.

As shown in Figures 4 and 5 each main bracket is in the form of a sleeve 12 adjustable on a pedestal b and at its upper end provided with a screw threaded spindle b which passes freely b, 1), two further brackets c, c,-

k see Figure 5, carried ,the hand screw 1 2 through a lug b carried by the casing a Hand wheels b screwed on each of the said spindles and bearing on the lugs are provided to adjust the sleeves vertically.

Each sleeve carries a right angled extension I) through which extends a spindle e forming one end of a transverse supporting member d. One end of each of said spindles is screw threaded to receive a nut e while the other end carriesa'n eccentric e provided with tommy holes 6 On each eccentric is mounted a slide bracket I having a circular recess to accommodate snugly the eccentric e and carrying an hydraulic feed in the form of a hydraulic cylinder 9 and ram 0 The transverse supporting members 11 extend in the form of spindles from the eccentrics e their axis being co-eccentric with those of their respective eccentrics.

Each slide bracket carries a tool carrrying slide it in the form of a rectangular frame provided with a central longitudinally extending slot i, see Figure 8, and recessed round three sides thereof to receive the tools 7', 7' and 7' the tools being secured in position by screw bolts i The fourth side of each tool carrying slide is connected to the ram 9 of the corresponding slide bracket. The tool carrying slides have longitudinally extending dovetail recesses in which fit angled guide ribs 7' formed integral with the slide brackets, the tool carrying slides being thus mounted so that they can partake of a longitudinal sliding feed motion with respect to the sup- ,porting brackets.

The ends of the transverse supports 11 remote from the main bearings are each carried by a second eccentric is rotatably mounted on a pin by a collar 1 vertically adjustable on a rod m to which it is clamped by The centre lines of the pins are co-axial with the centres of the spindles e.

Said rods m are supported between vertically aligned pins n, see Figure 9, the centres of which are eccentric to the vertical centre line of the rods. The said pins n are carried by the supporting brackets c which are circumferentially adjustable on the table with the axis of the main bearings as centres, the said brackets having downwardly extending screw threaded pins 0 ad- I slots 0 in the table 0/. Nuts- 0 threaded on said pins 0 clamp the brackets c in their circumferentially adjusted.

position.

Each of said rods m is provided with a knurled head 1) to enable it to be rotated about its vertical axis and clamping hand screws p screwed into 'other.

the heads of the supporting brackets c are provided to clamp the rods in their adjusted position.

The supporting members d are locked against rotation about the centre lines of the spindles e and pins k by means of the nuts e and. the tool carrying slides are secured in their adjusted position by means of nuts q screwed on screw threaded portions of said supports and bearing on the enlarged heads 1- of sleeves s the other ends of which bear on the ribs of the supporting brack ets 'l he work to be operated upon, designated by the letter t, is carried by a chuck t driven by the motor. The work, may, however, be carried between centres.

In operation each tool carrying slide, together with its slide bracket is rotated to bring into operation the appropriate tools. In Figure 8 the tools i and 7' are shown simultaneously cutting the work, and it will be understood that any selected mm or tools carried by the other tool carrying slide may likewise be brought into operation. Such adjustment can be affected by first slackening off the nuts 1' which are tightened up after adjustment has been efiected.

The tool carrying slide in the position shown in full lines in Figure 8 is effecting a vertically downwards feed, and in the position indicated in chain dotted lines is effecting a horizontal feed.

It will be understood that the adjustment can be efiected so that the tool or tools in operation can be adjusted to cut at any desired angle.

The position of the operating tool or tools relative to the work can be adjusted vertically by operating the hand wheels b the collars I being permitted to move vertically on the rods m by loosening the hand screws Z The tools can be adjusted relative to the work by easing oif the nuts 6 and the supports (1 rotated about the axis of the spindle e and pins k which can be done by inserting a tommy bar in the tominy holes e Further adjustment can be eiTected by easing oi? the nuts 0- and moving the bearing brackets c in the circumferential slots-o the supports being thus rotated in a horizontal plane with the axis of the pedestals b as centres. The nuts 0 are thereafter 'tightened'up.

A finer adjustment can be obtained by easing off the hand screws 11 and rotating the rodsm by means of the knurled heads p. Due to the eccentricity of their vertical bearings this imparts a fine circumferential movement to the supporting members 01, thus enabling a fine ad- -Justm'ent of the tool relative to the work to be effected.

. It is preferable that the slide brackets and tool carrying slides should be capable of an axial adjustr'nent relative to the work. This, in the machine illustrated, is efi'ected by forming the pedestals b eccentric with reference to pillars it which are supported in vertical bushes o fixed to the table of the machine, the said pedestals and their pillars being formed integral with each The pillars are provided with tommy holesw. I

To eifect axial adjustmentsetscrews xsec'uring the sleeves to their pedestals are slackened off and the pillars rotated by means of a tommy bar. This has the efiect of moving axially relative to the work the supporting members d, together with the slide brackets and tool carrying slides, the eccentric is moving axially on the pins 70 When the desired adjustment is efiected the set screws are tightened up.

The machine may be provided with one or more tool carrying slides, slide brackets and supporting members, all as above set forth, so that one or more cutting operations can be simultaneously performed on the work. Further the supporting members d, in lieu of extending horizontally as illustrated may extend vertically or at any desired angle relative to the horizontal.

It will be understood that by substituting motor driven grinding wheels for the cutting tools, the improved machine may be used for grinding. Also it will be understood that the cutting tools may be in the form of drilling or boring tools.

I claim:

1. A machine for boring, turning and like operations comprising means for holding the work to be operated on, a machine bed, two end supports mounted on the machine bed, a tool supporting member adjustably supported at its ends by the two end supports, a disc rigid on the tool supporting member and positioned between the two end supports, a slide bracket mounted on said disc, a tool carrying slide mounted on the bracket and having a slot through which passes the tool carrying member, said member, where it extends through the slot being concentric with the axis of the disc, and eccentric with reference to the axes of the ends carried by the end supports so that rotatable adjustment of the tool carrying member adjusts the position of the tools with respect to the tool holder.

2. A machine for facing, boring, turning and like operations comprising means for holding the work to be operated on, a machine bed, two end supports mounted on the machine bed, a tool supporting member extending between and rotatably supported at its ends by said supports, the longitudinal axis of the supporting member being eccentric with respect to the axis of the ends so supported, a slide bracket rotatably mounted on said supporting member, a tool carrying slide carried by said bracket, which slide has a slot through which extends the supporting member and is adapted to carry tools on at least two sides thereof and feed means carried by the bracket and by which the tool carrying slide can be fed towards the work to be operated on.

JAMES ANDERSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS