US1682472A

US1682472A - Work-adjusting means

Info

Publication number: US1682472A
Application number: US104559A
Authority: US
Inventors: William J Baumberger; Henry H Yerk
Original assignee: MICRO MACHINE Co
Current assignee: MICRO MACHINE Co
Priority date: 1926-04-26
Filing date: 1926-04-26
Publication date: 1928-08-28
Anticipated expiration: 1945-08-28

Description

Aug. 28, 19 28.

, 1,682,472 w. J. BAUMBERGER El AL worm ADJUSTING mums Filed April 26, 1926 a Sheets-Sheet 1 INVINTOPS H. /r. w

Aug. 2a, 1928'. 1,682,472

W. J. BAUMBERGER ET AL WORK ADJUSTING MEANS Filed April 26, 1926 s Shee ts-Sheet 2 Svw M4 ATTORNEYS Aug. 28, 1928.. 1,682,472

W. J. BAUMBERGER ET AL I WORK ADJUSTING MEANS vFiled April 26, 1926 3 Sheets-Sheet 5 INVENTORJ Patented Aug. 28,1928.

UNITED STATES PATENT i:orric s.r

WILLIAM J. nsumwmmt Ann HENRY H. ER DAVENPORT, Iowa, hssrenons TOQIIIECFRQ 114cm oomr'zi virjor Bnrrnrinoar, rows, ,AQCGRIOLRATION or IOWA.

WORK-ADJUSTING MEANS.

A plican s and April 26,

This invention relates to machine tools and-mole particularly tomeans for ac'curate 1y disposing work on the work supporting table .otxan internalgrinding machine or the like.

It has been found desirable that certain types of work be very accurately disposed on the work supporting table of a grinding machine. For example, in order to obtain the best'results in grinding longitudinally aligned cylinders in a pump casingior parallel cylinders in suchpazcasing, it is desirable at such cylinders be disposed outhe work porting table in exact parallelism with the worksupporting. table and with the tool spindle of the grinding machine;

Such pumpcasing's to be ground are frequently. provided with base supports, by means" of which supports the casing rests upon the work supporting. table. frequently happens-however, that such base supportsare slightl unevenor non-un form; Due to suchwirregu ariti'es .inn-the'apnmp oasing itself, it has-:been difficult n the past tel accurately dispose ax-pum casing directly onqt'he worksuonorting tab exit a grinding machine or the grinding of the cylinders thereof. The importance of grinding such cylinders so that the axostthereof areflln accurate relation :to each;- other .will be apprecia'ted .fr'omhthe fact that the more accurate the grinding of the cylinders, the greater is i the operatingjefiici'ency and longe vity o t a pump,for,example;of which the as ng forms a part:

An object oft-hiszinvention is to provide means foraccurately disposing work ;1ndesired posit-ion on a work supportingtable.

Another-objectof the invention is toprovide means for disposing. work having an internal cylindrical surface :to. be ground in accurate position on the work supporting tablejofua grinding 'imachine" withthe axis of suehcylinder parallel-Ito the worksupporting table and tofthe grinding wheclspmdle..

Afurther object of the invention-is to i provide means foraccuratelypositioning a a pump casing having longitudinally aligned and parallel cylinders adjacenta grinding wheel; spindle, whereby saidcylinders may be suceessively disposed in" accurate and J aligned relation to said spindle. V,

1926; semi No. 104,559.

Another object of thisinvention is to pro- .viderea'dily adjustable means for disposing work in desired position on a work supportmg table and for maintaining said workin i-np; wheel spindle by means contemplated by this invention;

I F g. 2 1s a perspective view of a-pump cas ng having parallel" and longitudinallv aligned cylinders,. said casing being disposed -1H desired relation .on a work supporting tableby. means contemplated by the invent1on; 1 f

Fig. 3 is an elevation, partly insection, showingadjustable means for :moving the work verticallyand laterallyto dispose said workin desireduposition on :a work supportiug table.- and means for maintaining the .work in saiddesired position;

Fig. 4' is {a plan; view of the structure shown n'F1g.3;'

Fig. 5 is a O ig. 4;; i V lfig. dis a vertical sectionon-line 6-'6 ofF lgair i Fig. 7 is a perspective view of a clamp member formaintaining the Work indesircd pos tion; g

i". 8'is a plan view of a bracket adapted to cooperate with :laterally movable means for moving work laterally; l

Fig. '9 isa frontelevation of the bracket shown in Fig. 8; f i Fig. 10 is a vertical section of a jack for adjusting the work vertically; and 'Fiq. lliis a'bottomrplan view, of the jack ehownin Fig-10'. V a

vertical section on line 5+-5 In Fig. 1 is shownan internal grinding machine 1 wliiclrmay be of usual construction but is preferably of the construction shown in application Serial No; 730,626, filed tatediabout itsown axis and orbitallyabout I an axis eccentric to its own. The pump fixture or other work 3 to be ground is shown as disposed on a horizontal work supporting table 1 and thereby brought into cooperative relation with the grinding wheel 5 mounted at the outer end of the spindle 2. The work support ng table 1 is adapted to be moved longitudinally of the grinding machine and of the grinding wheel spindle, laterally thereof, and may be revolved by associated mechanism shown in Fig. 1 and more particularly disclosed in the copending application of H. H. Yerk and \V. J. Baumberger, Scr'al No. 15,050 liled March 12, 1925. Thus on the longitiulinally mo *able and reciprocable carrier bed 6 is disposed a pivotally mounted base member 7, on which member 7 is mounted a frame 8 sl'dable laterally or transvcriely ot' the grinding machine upon said member 7 by turning the crank 11. The "arrier bed 6 is reciprocable long'tudinally oi the machine by hand or automatic means commonly associated with machines of this character. By mechanism 9 including suitable eams (not shown) the work supporting table '1 may be moved vertically with respect to the grinding machine and the grinding wheel spindle 2, said mechanism being operated by turning the crank 12. By releasing a latch 10, the base member 7 may be revolved, whereby the opposite side of the work 3 may be presented to the grinding wheel 5.

As has been previously mentioned, the base supports oi the work 3 are not always uniform or even, so that when such supports are d sposed directly on a work supporting table l, the axes of the cylinders of the pump casing are frequently not parallel with the table 4t and with the spindle 2. This invention contemplates means whereby a pump casing or other work may be accurately disposed on a. work supporting table regardless of the degree of irregularity of the base supports 13 of such work.

\Ve have provided by the jacks 1-1 independently operable means, whereby portions of the work 3 may be independently moved vertically with respect to the work supporting table 1- to the end that, in the pump casing illustrated in the drawings, the pump cylinders may be disposed with all of their axes parallel to the work suporting table t and parallel to the tool spindle 2. The jacks 14 may be of any suitable construction, and a re each shown as comprising an externally threaded elevating screw 15 and an internally threaded elevating nut 16. Preferably, the screw 15 is provided at its lower end with dowels 17 adapted to cooperate with apertures 18 in the work supporting table 4, whereby sa d screw may be prevented from rotation and from translatory, or bodily, movement on said table. The nut 16 may be provided with depressions 19 with which a suitable tool (not shown) may be employed to rotate said nut to move the work vertically.

The work 3 is engaged by the top 16 (Fig. of each nut 1G. in order that substantially the entire top 16 may engage the work, regardless of non-parallelism of the work 3 on the work supporting table 1-, the base of the screw 15, which rests directly on the table 1, is preferably rounded, whereby the longitudinal axis of the jack 1 1 may be maintained perpendicular to the adjacent portion of the work 3 and thereby a large area of contact obtained between the top 16 and the work 3. The apertures 18 are preferably sullicicntly large to permit such lim Eted pivotal movement of the jacks 14 about the bases 15, the clearance necessary for such pivotal movement being, however; relatively so small that such clearance is not shown in Figs. 3, 4; and

Any suitable number of jacks 11 may be employed. depending on the nature and construction of the work 3. In the case of the particular pump casing 3 the drawings, it has been found convenie to dispose a jack 1 1 under each of the four supports 13.

We have also provided means for adjusting the work laterally. Thus we have provided the centering brackets E20 which may be disposed on the work supporting, table and which are provided with bosses 21, through which are shown extending a plurality of threaded horizontal apertures 'lheapertures 22 are adapted to receive adjusting screws 23 provided with suitable knobs 24. The brackets :20 may be maintained in rigid position upon the work supporting: table 1 by means of shouldered bolts 2?, slidablc in the grooves 26 and engaginv the upper surface :27 of said grooves: Th shouldered bolts extend through slotted apertures 33 in the brackets {UNTCOOPCItIlQ with nuts 28 to maintain the brackets in rigid position with the bosses 21 adjacent the respective base supports 1 The bolts 25 may be prevented from turning by how; 29 engaging in slots in the apertures lit-l add in the bolts It will be seen that by turning the knob 21 the work may be moved laterally. The adjusting: scrcws '23 may be disposed in the aperture most convenient to cooperate with the particular work to be adjuz-gted. While the brackets 20 are shown as extending longitudinally of the work supporting table and grinding machine, it will be understood that said brackets may, if desired. be disposed transversely thereof, depending on the particular. work to be mounted and the convenience of operation in any partirular case. The bosses 21 are shown as raised so that. the adjusting screws may more readily engage with the supports 13.

illustrated ,i i

Hit

sesame We have also" showm-:awconvonient clamp,

mg means which m be:-madijly employed to firm ly lock the work in the desired ,position attained by the above described means for moving the work vertically and lateral-- 1y; This clamping means is shown as comprising a clamp bar 30 having apertures disposed to cooperate with the bolts 25, the

be employed to firmly maintain the clamp bars 30 in position. a I

To assist in accurately dispos ng a pump casing 3 orthe likeupon the worksupporting table 4 with the cylinders thereof in alignment with the grindingwheel spindle 2, centering means may be provided remote from the grinding'wheel spindle. Thus, the standard 36'entends upwardly from the carrierbed G; A longitudinally disposed rotatable shaft 37, which issupported by the standard36, cari'iesan adjustable radial mdicator arm 38, whiclrmay'be employed'to properlyvcenter the end of the pump cylinder remote from the grinding Wheel spindle. The pump'cylinder adjacent to the gr nding wheel spindle may be centered by slowly moving. the grinding wheel spindle about itsorbital axis or by removing the grinding wheel 5 and substitutingtherefor a suitable indicatorarm39 (Fig-2) similar to the arm 38. To align the cylinders ofapump casing with the -grinding"wheel spindle, the pump :casing; 3 may bemoved vertically and laterally by turning the-cranks. 12 and 11 respectively and tliesfinal 'adjustment-to correct for irregularitiesin'thebase supports 13- may be readily-and accurately made by 1 the above-described means contemplated our invention:

"It will" thus be seen that we haveprovide'd V a simple, yet effective, combination of parts,

, whereby work of irregular shape or structure may be accurately-disposed and maintained in desired position on the work supporting table of a macliinetoolmechanism in desired relation to the toolfspindlethfle tableito 1nd ivldually vertically ad ust at least of; j g

It will furthermoreibe understood that by means contemplated by our PI'BSLIIt'lDVGIIT tion, the machining r grinding of work maybe much more accurately accomplished,

than heretofore. ofstructuresrcomprising aligned cylinders,

Furthermore, inthe case such cylinders may be machined or ground each "in accurate alignment withvthe other,

thereby deriving-1nanybenefits where such accurate alignment isespecially desirable.

Furthermore, it is .to be understood that the particular forms of apparatus shown anddescribed are presented for purposes of enplan-ati'on andiil-lustration andthat vari-,

oils of said apparatus can be made without departing from our invention as defined. in the appended claims.

What we claim is: 1; The combination: with. a grinding machine liaving.a...carrier bed, a. grinding wheel spindlerotatable about its own axis and in an orbitwl pathabout. an axis eccentric to its own, and means for causing relative reciprocaition between said carrier bed and spindle longitudinally of said: spindle, of meanssfordisposing work having a cylinder to be groundin desired cooperative relation to said grinding iwlieel spindle, said means comprising a work; supporting table mounteduon said carrier bed and arranged t0carrysaidwork, pivotal supporting means for swinging said table in a horizontal plane tovpredetermined desired rotative positions, nieansi-or adjusting said table in a horizontal plane transversely of the grinding wheel. spindle, independent means mounted on said work supporting table adjacent opposed :sides of work 'to adjust the'work latera-11y on said'table, andgindependent adjust able means onssaidtable to individually ver; tically adjust at least three spaced portions ofnsaid work wit'h respect'to saidtable.

- 2. The combination with a grinding machine having acarrier bed, a grinding Wheel spindle rotatable about itsown axis and in an orbital path about an axis eccentric to its own, and means for causing relative reciprocation between said carrier bed and spindle longitudinally of said spindle, of-

meansfor disposing work having a cylinder f to be groundin desired cooeprative relation to' said grinding wheel spindle, said means comprising a work supporting table mounted on said carrier bed and arranged'to carry iii!) said work, pivotal supporting means for swinging-saidtablein a horizontal plane to predetermined desired rotative position, means for adjusting said table in a horizontal plane transversely of the grinding wheel 5 indle, means f'or adjustin said table vertical, said means being arranged to maintain said table in desired vertically adjusted'positionduring a grinding operation,

and independent adjustable means on said dle longitudinally of said spindle,of meansv for disposing work having a cylinder to be ground Y1n desired cooperative relation to said grinding wheel spindle, said means" comprising a work supporting mounted on saidcarrier bed and arranged table to carry said work, pivotal supporting means for swinging said table in a horizontal plane to set positions spaced 180 degrees apart, means for adjusting said table in a horizontal plane transversely of the grinding wheel spindle, means for adjusting said table vertically, said means being arranged to maintain said table in desired vertically adjusted position during a grinding operation, independent means mounted on said work supporting table adjacent opposed sides of said work to adjust the work laterally on said table, and independent adjustable means on said table to individually vertically adjust at least three spaced portions of said work with respect to said table.

4. The combination with a machine tool having an adjustable work supporting table, of means for readily and accurately disposing and maintaining work in desired position on said table, said means comprlsing in combination, at least three individually vertically adjustable jacks cooperable with spaced portions of work adjacent opposed sides thereof, said jacks being removably stcurcd to said table and disposed on said table intermediate said table and work, clamping bars arranged to cooperate with spaced portions of said work adjacent opposed sides thereof, and means removably secured to said table arranged to hold said clamping bars securely against said work in adjusted position.

5. The combination with a machine tool having an adjustable work supporting table. oi means for readily and accuately disposing and maintaining work in desiltd position on said table, said means comprising. in combination, brackets disposed on said table adjacent opposed sides of the work to be operated upon, means for removably securing said brackets to said table, means carried by said brackets for cooperating with portions of said work to individually move said portions for adjustment laterally of said table, clamping bars carried by said means securing said brackets to the table, said clamping bars being arranged to cooperate with said work adjacent the portions engaged by the lateral adjusting means, means for holding said clamping bars securely against said work in adjusted position. each set of clamping bars and brackets being ltlllOYtllJlQ together from said work supporting table.

(3. The combination with a machine tool having an adjustable work supporting table, of means for readily and accurately disposing and maintaining work in desired position on said table, said means comprising, in combination. at least three individually vertically adjustable jacks disposed on and removably secured to said table and disposed intermediate said table and spaced portions of the work, brackets disposed on said table adjacent opposed sides of the work, means for rcn'lovably securing said brackets to said table, means carried by said brackets for cooperating with portions of said work to individually move said portions for adjust ment laterally of said table, clamping bars carried by said means securing said brackets to the table, said clamping bars being arranged to cooperate with said work adjacent the portions engaged by the lateral adjusting means, means for holding said clamping bars securely against said work in adjusted position. each set of clamping bars and brackets being removable together from said work supporting table.

7. The method of grinding the interior walls of a casing containing a pair 01 longitudinally disposed cylinders to obtain longitudinally aligned cylindrical surfaces having a desired common axis. by grindin wheel rotatable on its own horizontal axis and orbitally about a horizontal axis eccentric to its own, which method comprises disposing said casing on a support; adjacent said grinding wheel, bodily adjusting said support and easing longitudinally and laterally of the grinding wheel spindle to approximately dispose said cylinders with the desired common axis of the surfaces to be ground in lolm itudinal alignment with said eccentric axis, independently adjusting spaced portions of said casing vertically and horizontally with respect to said support to accurately position said desired common axis with respectto the eccentric axis of the spindle, grinding the cylinder adjacent the grinding wheel, swinging the support in a horizontal plane through 180 degrees, and grinding the other cylinder.

8. The method of grinding the interior walls of a casing containing a pair of longitudinally disposed cylinders to obtain longitudinally aligned cylindrical surfaces having a desired common axis, by a grinding wheel rotatable about its own horizontal axis and orbitally about a horizontal axis eccentric to its own. the ends of said cylinders at the outer ends of said casing being suitably marked to indicate the position of said desired common axis, which method comprises disposing said casing on a support adjacent said grinding wheel. bodily adjusting said support and easing laterally and vertically to approximately dispose said cylinders with the desired common axis of the surfaces to be ground, as indicated by said markings on said cylinders, in longitudinal alignment with spaced indicators carried by the machine indicating the axis of orbital movement of said grinding wheel, independently adjusting spaced portions of said casing verti- "ally with respect to said support to accurately position said desired common axis of said cylinders with respect to said indicated eccentric axis of the spindle, grinding loo the cylinder adjacent the grinding wheel, swinging the support in a horizontal plane through 180 degrees, and grinding the other cylinder.

9. The method of grinding the interior walls of a casing containing a pair of longitudinally disposed cylinders to obtain longitudinally aligned cylindrical surfaces having a desired common axis, by a grinding wheel rotatable about its own horizontal axis and orbitally about a horizontal axis eccentric to its own,'the ends of said cylinders at the outer ends of said casing being suitably marked to indicate the position of said desired common axis, which method comprises disposing said casing on a support adjacent said grinding wheel, bodily adjusting said support and casing laterally and vertically to approximately dispose said cylinders with the desired common axis of the surfaces to be ground, as indicated by said markings on said cylinders, in longitudinal alignment with said eccentric axis, independently adjusting spaced portions of said casing vertically and horizontally with respect to said support to accurately position said desired common axis of said cylinders with respect to said eccentric axis of the spindle, and grinding said cylinders.

10. The method of grinding't'he interior walls of a casing containing a pair of longitudinally disposed cylinders to obtain longitudinally aligned cylindrical surfaces having a desired common axis, by a grinding wheel rotatable on its own horizontal axis and orbit-ally about ahorizontal axis eccentric to its own, which method comprises disposing said casing on a support adja cent'said grinding wheel, bodily adjusting said support and casing longitudinally and laterally of the grinding wheel spindle to approximately dispose said cylinders with the desired common axis of the surfaces to be ground in longitudinal alignment with said eccentric axis, independently ad usting spaced portions of said casing horizontally its own, and means for causing relative re-i ciprocation between said carrier bed and spindle longitudinally of said spindle, of means for disposing work having a cylinder to be ground desired cooperative relation to said grinding wheel spindle, said means comprising a work supporting table mounted on said carrier bed and arranged to carry said work, pivotal supporting means for swinging said table in a horizontal plane to predetermined desired rotative positions, means for moving saidtable in ahorizontal plane transversely of the grinding Wheel spindle, and independent means mounted on said work supporting table at each end portion of the work to adjust the ends of said work laterally, whereby said work may be disposed with the axis of the cylinder to be ground therein in accurate longitudinal alignment with the axis of the grinding wheel spindle.

In testimony whereof we aflix our signatures.

WILLIAM J. BAUMBERGER.

HENRY H. YERK.