US1765203A - Machine tool - Google Patents

Description

- 'Afaussv I 1,765,203

MACHINE TOOL Filed March 29, 1928 2 Sheets-Sheet 1 Fig.1

nvwyrm 9 E June 17, 1930. A. BUVSSYY 1,765,203

MACHINE TOOL Filed March 29, 1928 2 Sheets-Sheet 2 IN VEN TOR BY a? WFW ATTORNEY Patented June 17, 1930 uNrrEn s Arss earner series ALFRED BUSSY, or rams, rnancn assrsnon 'ro oo'mraeivin rnAnoArsn :oEs

MACHINES-OUTILS DE PRE crsion, or PARIS, FnAnoE 1 MACHINE TOOL Application filed March 29, 1928, serial No. 265,658, and in France A rn 15, 1927.

With existing machine-tools the top slide or movable poppet that carries the tool moves in guiding parts located on top the bed and the tool drive is necessarily effected 5 in an irrational manner by means of a belt connected with a motive device positioned above. Moreover, with said machines, the oil and the cooling liquid required for operation as well as dust, filings and other impurities are thrown on to friction pieces, causing abnormal wear and, consequently, impairing the accuracy of the machine.

The object of my invention is to provide improvements applicable to machine-tools such as cutting, screw, turning, etc. machines, but more especially to grinding machines, for the purpose of doing away with the above mentioned inconveniences. Broad 1y, said improvements consist in suspending, at a certain height above the bed, the toolholding puppet or device in a slide or guide way carried by a cone-shaped, arm-shaped or otherwise suitably shaped support, such an arrangement ensuring the following ad- 2 vantages:

(a) It leaves on the bed an available clearance below and in rear of the tool, permitting working devices to be positioned and,

especially, affording a passage for a driving belt extending towards the floor directly to the motor, this method of transmission being the simplest, the least cumbersome and the most rational possible, since the normal tension of the belt has the eifect of pressing the sliding parts upon their guideways, thereby eliminating any looseness of assembly;

(b)'It permits lubricating or cooling liquid to overflow on to the machine without any objectionable result ensuing therefrom since said liquid only overflows on to the bed of the machine only after it has done its duty and without coming into contact with any part of the mechanisms.

I have illustrated, as'examples, various possible embodiments of my invention in and by a drawing appended hereto and wherein: c p I Figure 1 is a front view of a semi-automatic grinding machine provided with the improvements that are characteristic of my invention;

Figure 2 is a side view of the same;

Figures 3 and 4; show modifications.

The bed of the machine is denoted'at 1, while 2 denotes-the parts supporting between centres the piece to beground, on the workholding carriage 10. w v

3 denotes the dome characteristic of my invention, the shape andarrangementrof which should be suited to the kind of machine to be fitted up. At the upperpart of Y said dome and on the inner side thereof are secured two guideways 4 onwhich is slidingly mounted the tool holding carriage '5 that supportsthe millstone tithe spindle of which revolves inbearings 7. The driving pulley for said millstone is indicated at 8.

. As will be clearly seen from Figure 2, the movable set or carriage 5-6 is suspended below dome 3above bed 1 and the whole of the rear part is quite clear, permitting, as at ready stated, working devices to be housed and affording a passage for the driving belt 9fi connectedwith a motor positioned on them oor. i Moreover, dust, filings or other impurities, as well as oil or the cooling liquid,

freely drop'on the bed without coming into contact with'the friction surfaces. '50

.In the embodiment shown by Figure '3, s the dome 3 is replaced by'an arm 3 where on are secured the guidewaysor. Slides 4 upon which rests "part 8. This device is especially suitable for small machines;

With the embodiment shown by Figure 4:,the device is intended for machines comprising tools of considerable weight. This device is constituted by an arm 3", provided with a slide 4; and combined with a second arm also provided with a slide 4?". The too-holder 5, ofsuitable section, slides in guideways 4:! and 4. The tool 6 revolves round a spindle integral with part 5", said spindle being driven by means of a-pulley 8 through a belt.

The above described embodiments should not be considered as in any case limitative and I reserve the right to introduce any-v desirable constructional modifications and/or alterations Without being deemed to depart from the scope of my invention.

Having noW particularly ascertained and described the nature" of my invention as well as the manner in which the same is to be performed, I declare that What I claim is: r 7

Claims V V 1. In a machine tool, in combination, a 10 bed, a tool, means for supporting the tool above said bed, a Work holding table to one'side of said supporting means, mechanism for driving said tool located on the opposite side of said supporting means, and, 1:- transmission means from the driving mechanism to the tool passing through the tool supporting means. 1

2. A machine tool asin claim Govt herein the tool is adjustably mounted in the said 2 supporting means. 7

3. Ina machine tool, a bed, a Work holding carriage on said bed'to one side of a vertical axis thereof, an arched member spaced from said'axis and havingits legs secured to the said bed, guideWays-mounted on the underside of the arched member, and a tool slidingly supported on said guideways.

In a grinding machine, a bed, a Work supporting table, centering means on said table, an arched member extending above the bed. to one side of said centering means, guideWays on the underside of the arched member, a grinding Wheel, and means for slidinglygmounting said grinding Wheel on said guideways. I

5. In a grinding Wheel according toclaim 4, means for driving the tool including an element extending through the legs of the arched member. I 40 6. In a machine tool, in combination, a

bed, a Work supporting carriage on said bec meansfor holding a tool over the Work sup porting carriage, said means. 1 including guidevvays, a tool slidingly mounted on said .45 guideWays, and means for driving said tool,-

1 5o ture.

said means including an element and extending through and being clear of said tool holding means. In testimony whereof I afiix my signa- I ALFRED BUssY.

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