US 1869514 A
Description (OCR text may contain errors)
F. L. SEITZ DRILLING AND REAMING DEVICE Aug. 2, 1932.
- Filed July 31, 1930 3 Sheets-Sheet 1 fiwemr: faevse/c/a 1. 55/72 y.
m M/ filo/ways:
.i I e i 2 i l i Aug. 2, 1932. F. 1.. SElTZ 1,869,514
DRILLING AND REAMING DEVICE Filed July 51, 1930 .5 Sheets-Sheet 2 fkEQEE/C/r A. 65/72,
Aug. 2, 1932. F. SElTZ 1,869,514
DRILLING AND REAMINQ DEVICE Filed July 31, 1950- 3 Sheets-Sheet 3 /7e=05/oe A 5.5/77,
I V i i y" M n M elevation of the I drill Patented Aug. 2, 1932 UNITED STATES PATENT OFFICEA FREDERICK DRILLING AND BEAMING nnvrcn Application filed July This invention relates to drilling and reaming devices and has: for its principal object to generally improve and flexible devices of. this class, particularly when used in the drilling and reamingof structural steel.
The novel features and advantages of the improved device will be rendered apparent in view of the following description taken in conjunction with the drawings,'wherein:
Figure 1 is a plan of a drilling and reaming device and carriage therefor constructed in accordance with the features of theinvention.
Figures 2 and 3 are, respectively, views in side and end elevation thereof.
Figures 4 and 5 are fragmentary views in orreamer-and sundry p'arts,shown removedfrom the carriage- Figure 6 is a diagrammatic illustration, showing the flexibility of operation ofthe device. e
Figures 7 and 7 a are detail views'in elevation and plan of a modified type of postzor support for the device.
A feature which contributes/to theflexibility of the improved device is the method of mounting the bit, when used for reamlng piled structural shapes, for example, matically find its own axis'through a series of subdrilled or subpunched holes and produce a true hole the axis of which is the mean of thecenters of all the holes subjected to the reaming operation thus compensating for errors in the initial alinement of the holes, or, at the will of the operator, the device will ream at any desired angle within its capaclty. Likewise, in drilling, the device will normally or grouped will autodrill parallel to its supporting post, but may be readily manipulated to (113111 813 practical ly any desired angle. p
The driving unit ismounted on a carriage which in turn is supported by a post, an the latter may be either clamp d to a convenient support or positioned on the work, as will hereinafter appear.
The reference numeral 5 designates the driving unit which is herein shown as an electric or pneumatic drill motor, said motor be- L. snrrz, or GARY, INDIANA a1, 1930. Serial No. 472,088.
render more the ends of the yoke being connected driving unit whereby the members 25 by means of a pivot pin26, and
ing mounted to swing laterally in a yoke 6 by means of trunnion plates 7 which are secured to the motor housing, and have bearing in said yoke and are threadedinto said plates,
and 85 held rigid by means of an end piece 9. The yoke 6 is swingably mounted in a hanger bracket 10 andis held in place by means of hexa-gonally headed and threaded pins 12.
By means of thistype of mounting, the motor or driving unit is permitted to have a universal movement, the yoke 6 and hanger bracket 10 providing a true universal joint assemblyy The foregoing assembly and driving unit are mounted in a lever frame 13 by means of the pins 12, which extend through said frame and hanger and are threaded into the yoke 6, said frame having a control handle 14 secured to the one extremity'thereof. I
The universal joint assembly and the unit supported thereby as justdescribed are normallyheld parallel with a supporting post 15 by means of a hook bolt and spring assembly andparallelogram assembly, the first- 75 named assembly comprising a hook bolt 16; cap .17, spring 18, sleeve 19, spring cover 20 and slide hook 21, the cap '17 being formed with a dove-tail groove and is secured to the top of the motor housing, the slide hook 21 being adjustably anchored in said groove. The hook bolt 16 receives the sleeve 19 and spring 18 and is passedthrough the top of the hanger bracket '10 and engages the slide hook 21. r a The parallelogram assembly comprises the hanger 10, above described, link 22, spring '23, bracket 24 and track rails or like members 25, the brackets 24 being rigidly secured in up- 00 right position. to one extremity ofsaid tracks 25 and the link 22 serving as a pivotal connecting member for the brackets 24 and hanger 10. The lever frame 13 is pivotally secured to the one extremity of the'track 95 the springs 23 are connected at opposite ex- I tremities, respectively, to holder 27 which is secured to brackets 28 which are welded or .otherwise'fastened to the spring brackets 24,
punched or where and holders 29 which are threaded into the pins 12.
The post has pivotally mounted thereon a carriage 30 formed with sleeve 31 having a working fit on said post. Rollers 32 are rotatably mounted on said carriage and the tracks 25 have movement on said rollers so that the device as a whole may be reciprocated on said carriage and pivotally moved about said post. The tracks 25 are rigidly connected by cross braces '33, diagonal braces 34 and end bolt 35 and sleeve 35a, the latter preventing overrunning of the tracks or track rails on the carriage.
The track rails 25 are provided with guide pieces or brackets 36, which serve to guide and steady the lever frame 13 when the device is working at an angle to the post 15 or when. the said lever frame 13 is out of alinement with the rails 25.
The carriage sleeve has bearing on an annular shoulder 37 formed on the post 15, the latter projecting slightly above the upper end ofthe sleeve and a key or pin 38 being passed therethrough, to prevent vertical displacement of thesleeve relatively to said post.
The post may be adjusted vertically by means of adjustment screw 39, and in conjunction with or in addition to this adjustment, bushings 40 may be placed on top or at the bottom of the sleeve 31.
In Fig. 2 the post 15 is shown clamped to the work by means of bracket 41 and screw 42. However, other means'may be employed, such as a magnet, as indicated diagrammatically in dotted lines at 43.
convenient type of post particularly adapted for application to a structural shape or beam which has been previously drilled or there are holes to receive screw bolts, is shown in Figs. 7- and 7a. In this instance thepost 15a is provided with a base 44 which is formed with a plurality of holes 45. The base is shown as of triangular shape and is provided with angularly spaced positioning screws 46, on which the base rests, said screws being adjustable and may be locked in adjusted position by nuts 47. The holes 45 are adapted to receive bolts or pins which may be passed through the base and extend into holes formed in the beam or member on which the device is working or in any other convenient or adjacent support.
The flexibility of operation of the device will be apparent from the foregoing description and drawing When conditions are such as to require a position of the device at an angle to its supporting post, then the parts 16, 17, 18, 19 and 21 come into play and permit the device to take any desired position, either automatically or at the will of the operator, to produce holes in perfect alinement. For instance, on curved or other surfaces not ninety degrees to post 15 or 15*, the operator can drill or ream, without making any adjustments, holes at any required angle up to the capacity of the machine (note the diagrammatic representation in Fig. 6) by simply controlling the position of the axis of the driving unit and bit by manipulation of the control handle 14.
Thelateral movement caused by the coordinate of the are generated by raising and lowering of the handle 14, the axis of the machine being held normally parallel to its supporting post by the action of the movable parallelogram construction formed by the parts 22, 24, 10, 23 is compensated for by the track assembly which is movably mounted on the carriage 30, and this movement also governs therange of track travel. 1 The carriage sleeve 31, being pivotally mounted on .the post 15, permits the device to swing horizontally in a full circular are, limited radially only by the track travel on the carriage. The springs 23 balance the weight of the vertically movable parts.
The drill or reaming device, having. a universal movement, will follow the lines of least resistance, so that when reaming a series of subdrilled or subpunched holes in layers or piled structural shapes, the bit will find its own axis and produce a true hole having an axis which is the mean of the centers of the holes reamed, thus compensating for errors in the alinement of holes in such material. lVhat is claimed as new is:
-1. A drill and reaming device comprising a supporting post, a carriage pivotally mounted on said post for swinging movement about the longitudinal axis of said post, track rails mounted for travel on said carriage, a lever frame pivotally connected to said rails for swinging movement at right angles to the swinging movement of said carriage, a hanger bracket pivotally mount d in said lever frame, a yoke pivotally mounted for swinging movement in said hanger bracket in a direction parallel to the longitudinal axis of said lever frame, a driving unit pivotally mounts ed in said yoke for swinging movement in a direction at right angles to the longitudinal axis of said lever frame, means for normally maintaining said hanger bracket parallel with said supporting post regardless of the position of said lever frame relative to said rails'and resilient means for normally biasing said driving unit into parallel position with said hanger bracket.
2. Adrill and reaming device comprising a supporting post, a carriage pivotally mounted on said post for swinging movement about the longitudinal axis of said post, track rails mounted for travel on said carriage, a lever frame pivotally connected to said rails for swinging movement at right angles to the swinging movement of said carriage, a hanger bracket pivotally mounted in said lever frame, a yoke pivotally mounted for swinging movement in said hanger bracket in a direction parallel to the longitudinal axis of said lever frame, a driving unit pivotally mounted in said yoke for swinging movement in a direction at right angles to the longitudinal axis of said lever frame, means for normally maintaining said hanger bracket parallel with said supporting post regardless of the position of said lever frame relative to said rails and means for normally biasing said driving unit parallel with said hanger bracket, said means comprising a hook bolt and spring assembly forming a connection between the upper end of said driving unit an [5 said hanger bracket, and a parallelogram assembly including brackets rigidly connected to said track and links connecting said brackets and said hanger bracket.
3. In a drill and reaming device, a pair of track rails, a lever frame pivotally mounted on said rails for vertical swinging movement, an inverted U-shaped hanger bracket pivotally mounted in said lever frame for swinging movement'about a horizontal axis, a yoke pivotally mounted in said hanger bracket for swinging movement about a horizontal axis in a direction parallel to the longitudinal axis of said lever frame, a driving unit pivotally mounted in said yoke for swinging movement in a direction at right angles to the lon- I gitudinal axis of said lever frame, a spring having a connection with the upper end of said driving unit and said hanger brackets for normally biasing said driving unit into parallel position with saidhanger bracket and a parallelogram assembly including said hanger bracket for maintaining said hangeribr'acket in vertical position regardless of the position of said lever frame relative to said rails. 40 In testimony whereof, I have hereunto set my hand.
FREDERICK L. SEITZ.