US2333169A - Filing machine - Google Patents

Description

' Nov. 2, 1943.

L. F. GLAUDE FILING MACHINE Filed Sept. 16. 1942 2 Sheets-Sheet 1 Nov. 2, 1943.- L. F. GLAUDE 2,333,169

FILING MACHINE Filed Sept. 16, 1942 2 Sheets-Sheet 2 Patented Nov. '2, 1943 UNIT ED PAT ENT' F F- 1. CE

FILING. MACHINE.

Leopold F; Glau'de, Chicago, lll.

Application Sertemben-IG, 1942-, seriatN ats rm (cue-4) 8 Claims...

This invention relates: generally tofilingmachines. tomachines of this class designed for filing and otherwise finishing punch dies, especially such as have been previously roughed out to approx-imatesi'ze and that require filling, grinding and honing oi"- surfacesthat run to a shoulder.

The main objects of this invention are to providean improved filing machine in which the file or other abrading implement is mounted above the work and reciprocated' vertically with proper provision for adjustingthe stroke to 1 work on surfaces of various heights and for permitting the abrading implement when operating on. work having a. shoulder to movedown exactly tosuchshoulder without danger of breakage; and to provide such-machine with! its mechanism. disposed to offer minimum obstruction to. movement of the work on the supporting bed.

A specific. embodiment of this invention is shown in the drawings in which:

Figure l is a side elevation of the machine partly in section with attachments. for holding a file" or a honing, tool for which the operation requires reciprocating movement only.

Fig. 2 is a sectional detail taken, on the line 2-2 of Fig. 1 showinghow the file, blade is backed up by an abutting element.

Fig. 3 is a detail viewed from the line 3--3. of Fig. 1 illustrating a form of crank arm adjustment for regulating the stroke of, the reciprocating plunger.

Fig. 4 is a view corresponding tov Fig. 1 showing alternative attachments. that are especially designed for use withfan abrading implement that has both, rotary and. reciprocatory movements, and also showing a modified form of the adjustable pitman crank whereby the stroke adjustment is effected from the outside by means of a stem extending longitudinally through the crank shaft.

Fig. 5 is a detail of the crank adjusting mechanism as viewed from line 5-5 of Fig. 1.

Fig. 6 isa fragmentary elevation of the stroke adjustment indicator.

In the drawingsonly those parts of the machine that areessential to an understanding of the present invention are illustrated.

The machine comprises a horizontal table or work support bed I mounted on trunnions 2 on the frame 3 in such manner that the table I can be tilted slightly and secured in its tilted position as by clamp screws, not shown, engaging the quadrant d.

The frame 3 supports a housing 5 enclosing The invention is particularly applicablepitman mechanism for reciprocating a plunger 6:Which rides. in bearings 1 and 8 so as to. stand vertically and reciprocate longitudinally. The housing 5 is, arranged to permit the pitman' mechanism. to; run in oil. The plunger 6 has a shaft-like extension 9-, extending upwardly through a central hole II) in the bed I. The. part 9 of the plunger is channeled at H to receive. splines l2 and 1.3 carried by spaced heads- M' and I5. of a yoke structure for mounting the abrading tools. The heads 14 and I5 are. rigidly connected to each other by a rod 16 and: set screws H.

The lower head I5 is supported by an. abutment in the form of a collar 18 fixed on the plunger portion 9'.

The head I4 is formed on its front end for supporting a chuck 2 0 for holding a file 21: or other abrading implement of similar nature.

. The lower yoke I5: is provided with a forwardly facing chuck 22' for adjustably holding an abutment. rod 23 which braces the file 21 against yielding laterally through pressure on the work. The rod 23; is adjusted by means of a set screw 24;

The yoke structure is normally held firmly pressed against the abutment. collar 18 by means of a compression spring 25 and a nut 26 threaded on the. upper end of plunger part 9. This spring is 'sufiioiently stiff to overcome the frictional resistance of the file or other abrading element on the'work but to yield in case of overtravel of plunger 9 in the event. that the abrading element strikes a shoulder on the work, which in the drawings is represented as shouldered punch die 2:1 having a vertical surface 28 on which the file is positioned to operate and having a shoulder 29 which abruptly meets the surface 28.

An antifriction roller 30 engages rod l6 of the yoke structure and thus prevents the pressure of the work against the tool from causing the plunger rod 9 to yield laterally. The roller 30. is carried by an arm 3| mounted for vertical adjustment by means of a set screw 32 on a bracket 33 which in turn has a slotted base 34 and studs 35"for attachment to the bed. I and adjustment toward and away from the plunger part 9. These adjustments permit the roller 30 to serve as a guide for the rod IS in any position of adjustment to which the bed may be tilted for operation of the abrading implement'upon an inclined surface.

Thepitman mechanism comprises a yoke 36 attached to the plunger 6 by a set screw 31 and having a slide bearing 38 that engages the crank pin 39 on the crank shaft 42, the crank arm being by means of a set screw 40.! which engages a1 groove in the periphery of the eccentric 4i and is reached by a socket wrench through an aperture 40.2 in one side of the housing '5, andjs adjusted by trial and observation until the re ciprocatory movement of the plunger is of "a de-' sired amount. 1

In Fig. 4, alternative attachments for use with a "rotating abrading limp'lementi are 'illus trated and also a modified for'm of. cr'ank'arm adjustment mechanism for 'thepitman'mechanism.

the crankshaft and a swingable arm lfipivoted eccentrically at '41 on the arm 44.

'The swingable arm 46"i'sj"fast on a gear'48 which imeshes with.a-pinion 49 faston a' stem 50 extending -centrally through the crank shaft 45. shaft 45 and in this case it "may bea' double pulley with one groove for the power belt 52 and a second grooveforthe tool-driving belt 53."

In Fig. 5the arrow 45.! indicatesithe normal rotation about the crank shaftf45'and stem' 50 and the arrow 4B.I indicates'the movement of the crank pin 55 as its eccentricity is adjusted.

. A knob 54, keyed to the stem 53, serves to rotate the stem with respect to the crank shaft 45.

for adjustingthe' eccentricity of the crank pin 55. "A look nut 56 clamps .the knob 54 against a shoulder'at the end of'shaft 45 andth'us locks the stem" 59 in any position of adjustment with respect to the crankshaft45 and at the same time locks the crank pin 55 at its adjusted eccentricity.-' I

Stop's'shown inFigure 6 in the form of lugs 5! and 58, limit the rotation of the'knob 54 with re spect to the crank shaft 45 and restrain the movement so that the peripheral graduations on the knob54 will correspond with the eccentricity of'the crank pin 55. a r 1 In order to facilitate the assemblage and rearrangement of the mechanism above the work'bed l, the plunger stem is made in two parts, the part 6 which extends into the housing 5. and the part 9 which extends upwardly through thebed plate I and which terminates in' a threaded stud B0 whichscrews'into a socket in the upper end of the part 6 .and terminates at a shoulder 6|. This shoulderiassures. that the parts splined on the upper part9 will face the front 62 of the bed I. For convenience in connecting these parts one or both Ofgthe parts 9 and 6 may be shaped as at 63'to receive awrench.

.Referring again to Fig. 4, the change to a rotary abrading implement; as for example, a grinding wheel;64,' involves the use ofa spindle 65 and chuck 66 in place of the chuck 20 of Fig. 1. In order to'rprovide, a bearing for the spindle 65, the upper head- I4 is equipped with a bushing Bland the spindle is confined in-said bushing bar means of set collars 68 and 69 and a pulley In-this form thecrank'arm is elbow'- jointed andcomprises a mainiarm 44"keyedIto.

The drive. pulley 5i .is keyed to the crank A second bearing member H for the spindle 65 has a radially extending shank 12 which replaces the abutment rod 23 in the lower head l5 of the yoke structure. The bracket 33 is replaced by a bracket'l3 on which is shiftably mounted a pair of guide pulleys 14 for the belt 53.

In the form shown, the pulleys 14 are carried by a swingable arm 15 which is normally urged by a compression spring 16 to take up slack in the belt 53. The spring 16 may be mounted on a guide arm ll pivoted on the bracket and extending through an aperture in the arm 15.

- The operation of the device shown is as follows:

The operator stands in front of the bed plate:

3: and places the work in position to cooperate with the abrading'tool and after making the proper adjustment of the machine for the particular surface he is working on, he pushes the work: toward the abrading implement and guides the: work so that the abrading implement will per-- form. the proper finishing operation according to the-operator's judgment. 1 7 g:

Inpreparing for a filing operation, the stroke; of the pitman mechanism is first adjusted to a throw that is somewhat less than theheight of. the surface 28 of thepartofythe work that is being operated upon.- Then thepitmanmechanism is-moved by turning the pulley 43 -until the plunger '6 is at the lower limit of its stroke and the'cross-headfstructure isadjusted on the plungerpart 9vby meansofthe collar l8 so that the file 2 l', or hone as thecase may be, will rest-uponthe shoulder 29 of the work; if there;be such a heads l4 and I5 throughout the stroke of thepitman mechanism.

'After these adjustments are made, the compression spring '25 is adjusted by means of the knurled collar zfi until it exerts pressure enough to overcome any resistance that is likely to be applied by the abrading action of the file but allowing opportunity for the yoke system to yield in the event that the file should strike the surface 29 before the pitman mechanism has reached the lower limit of its stroke. It is to be noted that: the lower end of the file is 'braced laterally by the abutment rod 23 so that there can be no yielding of the file under pressure against the work, and that the yoke structure is backed up by the guide roller 36 so that there can be no similar yielding of the stem part 9. This insures that the movement of the file will always be exactly in vertical lines.

V In operating with a rotary abrading implement 64, the parts function in th'same way as they do in the filing operationexcept that the abrading implement rotates as it reciprocates Vertically. I

Although but one specific embodiment of this invention is shown in the accompanying drawings with m odified attachments for providing for rotation of the abrading implement during its reciprocatory movement, it will be understood that numerous details of the construction shown maybe altered or omitted without departing from the spirit of the invention as defined by the following claims.

I claim:

1. A machine of the class described comprising a work supporting bed, a longitudinally reciprocatable vertical plunger, a yoke slidably mounted on said plunger above said bed, a shoulder on said plunger carrying said yoke, an abrading implement carried by said yoke at one side of said plunger, and a spring stop normally urging said yoke against said shoulder.

2. A machine of the class described comprising a work supporting bed, a longitudinally reciprocatable vertical plunger, a yoke slidably mounted on said plunger above said bed, a shoulder on said plunger carrying said yoke, an abrading implement carried by said yoke, a spring stop normally urging said yoke against said shoulder, and local guide means on said bed opposed to said abrading implement to support said plunger against lateral yielding through pressure against said abrading implement.

3. A machine of the class described, comprising" a work supporting bed, a longitudinally reciprocatable vertical plunger, a yoke structure having a pair of heads splined on said plunger, a supporting shoulder on said plunger for said yoke structure, a spring stop on said plunger normally urging said yoke structure against said shoulder, the upper said head having means for holding a vertically depending abrading implement and the lower said head having abutment means for resisting lateral yielding of said abrad-. ing implement toward said plunger.

4. A machine or the class described, comprising a work supporting bed, a longitudinally reciprocatable vertical plunger, a yoke structure having a pair of heads splined on said plunger, a supporting shoulder on said plunger for said yoke structure, a spring stop on said plunger normally urging said yoke structure against said shoulder, the upper said head having means for holding a vertically depending abrading implement, the lower said head having abutment means for resisting lateral yielding of said abrading implement toward said plunger, means adjustably connecting said heads together, and guide means on said bed coacting with said head connecting means to support said plunger against lateral yielding through pressure on said abrading implement.

5. A machine of the class described, comprising a work supporting bed, a longitudinally reciprocatable vertical plunger, a yoke structure having a pair of vertically spaced heads splined on said plunger, a supporting shoulder on said plunger for said yoke structure, a spring stop on said plunger normally urging said yoke structure against said shoulder, a rotary vertical spindle,

bearings on said heads for said spindle, and adjustable guide means on said bed for preventing lateral yielding of said spindle.

6. A machine of the class described comprising a Work supporting bed, a longitudinally recipro-catable vertical plunger, a yoke slidably mounted on said plunger above said bed, a shoulder on said plunger carrying said yoke, an abrading implement carried by said yoke, a spring stop normally urging said yoke against said shoulder, and local guide means on said bed opposed to said abrading implement to support said plunger against lateral yielding through pressure against said abrading implement, said bed being tiltable relative to the axis of said plunger, and said guide means being adjustable to conform to the changes in angular disposition of said bed.

7. A machine of the class described, comprising a work supporting bed, a longitudinally reciprocatable vertical plunger, a yoke structure having a pair of vertically spaced heads splined on said plunger, a supporting shoulder on said plunger for said yoke structure, a spring stop on said plunger normally urging said yoke structure against said shoulder, a rotary vertical spindle, bearings on said heads for said spindle, a pulley on said spindle, a drive belt for said pulley, guide means comprising a bracket secured to said bed and shiftable toward and away from said plunger, and a roller overhanging said bed, being adjustable vertically on said bracket and coacting with said yoke structure to resist lateral yielding of said spindle.

8. A machine of the class described, comprising a work supporting bed, a longitudinally reciprocatable vertical plunger, a yoke structure having a pair of vertically spaced heads splined on said plunger, a supporting shoulder on said plunger for said yoke structure, a spring stop on said plunger normally urging said yoke structure against said shoulder, a rotary vertical spindle, bearings on said heads for said spindle, a pulley on said spindle, a drive belt for said pulley, guide means comprising a bracket secured to said bed and shiftable toward and away from said plunger, and a roller overhanging said bed, being adjustable vertically on said bracket and coacting with said yoke structure to resist lateral yielding of said spindle, guide pulleys shiftably mounted on said bracket, and a spring normally urging said guide pulleys into position to take up slack in said drive belt due to reciprocation of said yoke and to adjustment of said bracket on said bed.

LEOPOLD F. GLAUDE.

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