US3449967A - Profiling machine - Google Patents

Description

June 17, 1969 J. .1. DANcslK PROFILING MACHINE Filed July 17, 1967 United States Patent O 3,449,967 PROFILING MACHINE Joseph J. Dancsik, 23550 Oneida Ave., Oak Park, Mich. 48237 Filed July 17, 1967, Ser. No. 653,766 Int. Cl. F16h 25/12 U.S. Cl. 74-56 4 Claims ABSTRACT OF THE DISCLOSURE This invention pertains to a hand-type profiling machine having an axially mounted movable tool holder that reciprocates in a to-and-fro motion in response to a rotary member having a cam edge, whereby the rotary motion of the cam edge is translated into an axial longitudinal reciprocating motion of the complementary tool holder.

The invention involves and comprises a housing, a rotary cam drive member adapted to be engaged with and driven by a exible drive shaft, a spring-biased driven member axially supported by a tool holder mount secured to the housing, a bearing mounted rotatable driven wheel mounted on the driven member at the proximal end thereof for direct contact and association with the cam driving member, the driven member being spring-biased so that continuous bearing contact is made between the cam driving member and the rotary wheel of the driven member. The rotary motion of the driving member, which is cam formed on its end where contact is made with the driven wheel, is thius translated into a reciprocating longitudinal motion, whereby the tool secured to the end of the driven member iscaused to reciprocate and effect a cutting action at the end thereof.

iIt is an object of the invention to provide in a profiling machine a rotary driving member having a cam-type edge in continuous contact with a rotary wheel on a driven member so that the rotary motion of the driving member effects an axial longitudinal reciprocating motion of the driven member. Another object is to provide a driving member in such tool adapted to be engaged with and by a exible drive shaft or other power means. Still another object is to provide spring-biasing means in the profiling machine for maintaining the wheel supported on the driven member in continuous contact with the cam edge of the driving member. Yet a further object is t provide a simple hand-type proling machine of -very simple yet efficient design in which rotary motion of the driving member is translated into longitudinal reciprocating motion of the tool holder.

These and additional objects of the invention and features of construction will become more clearly apparent from the specific description given below, in which the terms employed are used for purposes of description and not of limitation. Reference is made to the drawing annexed hereto constituting an integral part of this specication and illustrating an exemplary embodiment of the invention, in which FIGURE 1 is an isometric view of an exemplary profiling machine embodying the inventive concept. j

FIGURE 2 is a longitudinal axial sectional view taken substantially on the line 2-2 of FIGURE 1.

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FIGUR-E 3 is a fragmentary plan view, within the housing of the device illustrated in FIGURE 1, taken substantially upon the line 3 3 of FIGURE 2.

FIGURE 4 is an isometric view of the end of a cam type driving member showing a modification of the cam surface that makes driving contact with the wheel portion of the driven member.

FIGURE 5 is a fragmentary bottom plan view taken substantially on the line 5-5 of FIGURE 2.

As shown in the several views of the drawing, the profiling machine 10 comprises a housing 12, a coupling end 4member 14 threadedly secured to the rearward end of the housing 12, a driver or driving member 1=6 bearing supported in the housing and extending rearwardly into the bore of the coupling end member .14, a driven member 18 in the housing 12 secured to a tool holder 19 which is bearing mounted in a tool holder support 20 threadedly secured to the forward end of the housing 12.

The housing 12 generally comprises an outer cylindrical body 22, a counterbore 24 forming a chamber 25 for the contacting portion-s of the driving member 16 and the driven member 18, a counterbore 26 seating bearings 28 and a lubricant seal 30 for a portion of the driving member 16, and an end hub 32 having an internal thread for engagement with the coupling end member 14.

The coupling end member 14 has a body 34 provided with a bore 35, an externally knurled hub portion 36 and a projecting threaded hub 38 engageable with the internally threaded end of the housing hub 32, a hub 4l) at the digital end of the member supporting a locking ball 42 and a ball retaining spring clip 44 designed to releasa- Ibly secure the connecting end 46 of a housing disposed about the ilexible shaft 48 projecting therefrom, the shaft end being arranged with a key 50 designed to engage and drive the driving member 16.

The driving member 16 comprises an intermediate shaft 54 supported in bearings 28, 28, an end portion 56 having a slotted bore 58 designed to receive the exifble shaft portion 48 and key 50, and a cam-type driver `60 threadedly secured to the forward end of shaft 54 and having an annular cam edge '62.

The `driven member 18, disposed in chamber 25, comprises a body 64 having a driven wheel 66 rotatably supported upon a shaft pin -68 and secured thereto by a `screw 69, the pin being mounted for rotation in bearings 70 secured in a counterbore 72, a projecting pin 74 iixedly secured in the body 64 and having a portion 75 secured in a bearing 76, a threaded counterbore 77 at the forward hub end 79 of the body, and a spring 78 seated against the washer 81 and biasing the body 64 and the wheel 66 of the driven member toward and against the cam edge 62 of the driving member 16.

Threadedly secured to the driven member body 64 in the threaded counterbore 77 is the tool holder 19 bearingsupported in the forward tool holder support 20 and com prising a shaft `82, a threaded end 84 adapted to threadedly engage the threaded counterbore 77, a counterbore 86 at the forward end of the tool holder body .82 adapted to receive the secured end of a tool 88, a locking hub end 90 at the distal end of the tool holder 19 with a set screw 92 for securing the tool 88 in the counterbore 86, and a dust shield 94 threadedly mounted upon the thread- 3 ed portion 96 of the body 82 adjacent the tool end hub 90 and having an annular iiange 98 extending rearwardly from the threaded portion 96.

The tool holder support 20 comprises a cylindrical body 100, a bore 102 adapted to contain ball bushings 104, 104, a spacer ring 105 between the bearings, an oil seal 106 disposed in the bore 102 adjacent a retaining ring 107 seated in an annular slot 108 at the distal end 109 of the body 100, an externally threaded hub 110 at the proximal end of the body adapted to threadedly engage the forward end of the housing body 22 and provided with a counterbore '112 seating the spring 78 and containing the hub end 79 of body 64, and having a small hole 114 disposed in the outer perimeter of the hub fiange 117, for the insertion of a pin into hole 114 so that the hub 110 can be tightened upon the lubricant seal 11S between the flange 117 and the forward threaded end of housing body 22.

To securely lock the tool holder body 82 onto the driven member body 64 after threading the end 84 into the threaded bore 77, a locking nut -116 is advanced against the end of the driven member body hub 79 upon the threaded portion 84 of the tool holder.

It will be observed in FIGURES 2 and 5 that the hub end 110 of the tool holder support 20 is provided along one edge with a pair of projecting fingers 111, 111 forming a yoke with a slot 113 therebetween adapted to receive the driven member bearing 76 which slides or rides reciprocatingly in the slot between the fingers, the slot having a suitable clearance for the bearing 76 so that contact is made with only one of the fingers 111 at a time.

The 'housing body 22 is provided on its external surface with a plurality of longitudinally extending palm-engaging grooves 1-18 arranged in parallel about the periphery of the body and radially of the axis of the tool.

An alternative form for the cam edge 62 of the driving member 60 is illustrated in FIGURE 4, wherein the cam type driving member 60a has an annular edge 62a provided with a pair of cam lobe portions 621;, 62b spaced 180 apart. Of course, it will be understood by persons skilled in the art to which the invention pertains that the number of such cam lobes on the edge 62a of the driving member 60a may be any suitable number more than l to provide the reciprocating effect in the tool holder 19 that is desired or required.

The profiling machine operates as follows. The end of flexible shaft 48 and its housing 46 is slipped into the bore 35 of the coupling end member 14 so that the flexible shaft 48 resides in the counterbore 58 of the driving member 16 and the drive shaft key 50 lies in the counterbore slot of the coupling portion 56, the housing 46 being retained at a conventional annular groove therein by the ball 42 and spring clip 44. A cutting, abrading, filing or other tool 88 is inserted into the counterbore 86 of the tool holder 19 and the set screw 92 threadedly seated firmly against the tool portion disposed therebelow, so that the tool 88 is iirrnly locked into the tool holder. Upon rotation of the flexible drive shaft 48, the driving cam-type member 60 is caused to rotate against the driven wheel 66 which is constantly engaged with the cam edge 62 by virtue of the biasing action of spring 78 against the driven member body 64. As the driving member cam edge 62 rotates against the driven wheel 66, tool holder 19 advances forwardly from the support and retracts thereto in a reciprocating motion, in direct response to the rotation of the driving member 60. The housing charnber is designed to contain a lubricant, such as oil, grease or other suitable material, so that the rotating shaft 54, the tool holder body 82 and the driven wheel 66, as well as the bearings 28, 70, and 104, are constantly lubricated. The oil seals in the housing 22 and 106 in the tool holder support 20, as well as the seal ring 115 at the forward end of the housing, are designed to retain the lubricant therebetween.

The several parts of the profiling tool 10 are made principally of steel, although other materials may be suitable depending upon the load and motion characteristics of particular parts. For instance, the tool holder support body can be made of aluminum. It will be noted that rotating shafts 54 and 68 are supported in ball bearings 28 and 70, respectively; the reciprocating tool holder body 82. is preferably mounted in spline type ball bearings 104, 104 as shown, a bearing structure well known in the art. Inasmuch as the cutting action of the secured tool 88, whether it be filing, abrading, or other similar function, applies substantial loads to the -moving members of the tool, it is recommended that all relatively moving surfaces be hardened and ground to substantially close tolerances with their mating complementary surfaces.

Profiling machine is designed principally for use in a tool and die shop for hand finishing of tools, dies, parts and other similar products of metal. The tools which can be used in and with the machine include metal and wood cutting, fili-ng, abrading and machining tools. The machine can of course also be used on wood patterns, as well as for other wood, plastic and composition dies, tools, parts and products.

Having described the invention in its simplest terms, it is to be clearly understood that features of the system and apparatus may be changed or varied in greater or lesser degree without departing from the essence of the invention defined in the appended claims.

I claim:

1. In a profiling machine, the combination comprising a housing having a bore and a counterbore therein,

a driving member rotatably mounted in said housing bore and adapted to be associatedly conjoined at the distal end thereof to power drive means,

a tool holder support removably secured to said housing at the proximal end thereof,

a tool holder mounted for axial reciprocating motion in said tool holder support,

a driven member secured to the proximal end of said tool holder and having a guide member disposed radially outwardly thereof,

said driven member comprising a body fixedly secured to said tool holder proximal end, a driven wheel mounted rotatably on and radially outwardly of said body,

the axis of said driven wheel being transverse of the axis of said driven member body, `a driving cam secured to the distal end of said driving p member and having a rounded cam edge in line contact with the outer peripheral surface of said driven wheel,

means biasing said driven member against said driving cam edge for engagement therewith during rotative movement of said cam,

said tool holder support comprising a body having a hub portion at one end thereof adapted to be removably secured to said housing, and guide means projecting from said hub Iportion into said housing counterbore and engagable with said guide member to guide said tool holder in its reciprocating motion.

2. The structure defined in claim 1, wherein said driven member is provided with a pin having an end thereof projecting radially from said body,

said guide means comprising a pair of spaced apart fingers forming a slot therebetween,

said guide member being disposed for reciprocating movement in said slot.

3. The structure defined in claim 2, wherein said guide member comprises a bearing supported for rotation on said pin end, said bearing being disposed `for sliding reciprocating movement in said slot.

4. The structure defined in claim 1, wherein said cam edge is provided with a plurality of cam lobes.

(References on following page) References Cited UNITED STATES PATENTS Paine.

Van De-poele.

Mahoney.

Rodrigues.

Cooley.

Young Mller Lembke.

2,101,878 12/1937 Snodgrass.

M se 74-56 l0 3/ 1950 Frederick.

FOREIGN PATENTS 7/ 1935 Great Britain.

U.S. C1. X.R.

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