WO1999006172A2 - Taper lock arrangement - Google Patents
Taper lock arrangement Download PDFInfo
- Publication number
- WO1999006172A2 WO1999006172A2 PCT/US1998/015741 US9815741W WO9906172A2 WO 1999006172 A2 WO1999006172 A2 WO 1999006172A2 US 9815741 W US9815741 W US 9815741W WO 9906172 A2 WO9906172 A2 WO 9906172A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- male
- tapered
- female
- male part
- opening
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/0007—Connections or joints between tool parts
- B25B23/0035—Connection means between socket or screwdriver bit and tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/117—Retention by friction only, e.g. using springs, resilient sleeves, tapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/0063—Connecting non-slidable parts of machine tools to each other
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/14—Configuration of the cutting part, i.e. the main cutting edges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/50—Drilling tools comprising cutting inserts
Definitions
- This invention relates to the field of mechanical arrangements in which one mechanical member is coupled to another, and more particularly to a male/female combination in which the male part is taper locked into the female part.
- a number of taper lock arrangements are known in the art, in which a tapered male part is received in a complementarily tapered female part, the angle of the taper for each part being chosen so that the male part is mechanically locked in the female part.
- a large number of rotary tools in a machine shop employ a Morse taper system for accommodat- ing a quick change of bits, drill chucks, rotatable clamping jaws, and the like in such machines as lathes, drill presses, and milling machines, as well as in heavy duty road building equipment, tractors, mining tools, etc.
- a gentle impactive force e.g., a tap
- a gentle impactive force on the male part in a direction away from the female part will serve to break the taper lock for easy removal of the male part and replacement by another male part, for example to replace worn bits or to change sizes of bits quickly and efficiently.
- the present invention overcomes the aforementioned problems of the prior art by providing a taper lock system which employs the taper lock principles while minimizing, or avoiding altogether, a breaking of the taper lock between the male and female parts upon encountering excessive torsional forces between the male and female parts.
- a taper lock arrangement comprising a female part having a non- conical shaped wedge receptacle formed therein, and a male plug part comprising a non-conical shaped wedge portion, the wedge portion fitting into the wedge receptacle in an insertion direction to effect a taper lock.
- a taper lock arrangement comprising: a generally rectangular male part; and a female part having a generally rectangular opening therein for receiving the male part in an insertion direction; wherein the opening has a pair of interior surfaces converging in the insertion direction, the male part has a pair of external surfaces converging in the insertion direction, and the male fits into the opening in the insertion direction to effect a taper lock between the exterior converging surfaces and the interior converging surfaces.
- the invention may assume a variety of design configurations using both converging interlocking walls and diverging interlocking walls, may use converging or diverging walls offset from one another on either side of a central insertion axis in order to simultaneously effect a bias of the male part against the female part, or may have symmetrical diverging or converging walls to avoid any bias of the male part against the female part .
- FIGURE 1 is a front view representation of a spade drill assembly employing a taper lock arrangement made in accordance with the present invention
- FIGURE 2 is a side elevational view of the female body portion of the spade drill arrangement shown in Figure 1;
- FIGURE 3 is a perspective view of a spade bit insert of the type that may be used the spade drill arrangement shown in
- FIGURE 4 is a side elevational view of the spade insert shown in Figure 3 ;
- FIGURE 5 is a perspective view of one embodiment of the invention showing the female receptacle part in schematic form, i.e. not associated with any particular tooling function, the dashed lines showing a version of the female part without end walls, this figure also showing a male plug part receivable in the female receptacle part;
- FIGURE 6 is a top plan view of the male part according to a first embodiment of the invention.
- FIGURE 7 is a side view of the male part shown in Figure 6;
- FIGURE 8 is a bottom view of the male part shown in Figure 7;
- FIGURE 9 is a left end view of the male part shown in Figure 7;
- FIGURE 10 is a right end view of the male part shown in Figure 7;
- FIGURE 11 is a bottom end view of a female receptacle part according to the first embodiment of the invention.
- FIGURE 12 is the same view as in Figure 11, showing an inserted and taper locked male part ;
- FIGURE 13 is a partial cross sectional side view of the first embodiment of the invention showing a male plug part inserted into, and taper locked to, the female receptacle, the latter shown in cross section;
- FIGURE 14 is a top plan view of the male part according to a second embodiment of the invention.
- FIGURE 15 is a side view of the male part shown in Figure 14;
- FIGURE 16 is a bottom view of the male part shown in Figure 15;
- FIGURE 17 is a left end view of the male part shown in Figure 15;
- FIGURE 18 is a right end view of the male part shown in Figure 15;
- FIGURE 19 is a bottom end view of a female receptacle part according to the second embodiment of the invention.
- FIGURE 20 is the same view as in Figure 19, showing an inserted and taper locked male part
- FIGURE 21 is a partial cross sectional side view of the second embodiment of the invention showing a male plug part inserted into, and taper locked to, the female receptacle, the latter shown in cross section;
- FIGURE 22 is a top plan view of the male part according to a third embodiment of the invention.
- FIGURE 23 is a side view of the male part shown in Figure 22;
- FIGURE 24 is a bottom view of the male part shown in Figure 23;
- FIGURE 25 is a left end view of the male part shown in Figure 23;
- FIGURE 26 is a right end view of the male part shown in Figure 23;
- FIGURE 27 is a bottom end view of a female receptacle part according to the third embodiment of the inven ion;
- FIGURE 28 is the same view as in Figure 27, showing an inserted and taper locked male part
- FIGURE 29 is a partial cross sectional side view of the third embodiment of the invention showing a male plug part inserted into, and taper locked to, the female receptacle, the latter shown in cross section;
- FIGURE 30 is a top plan view of the male part according to a fourth embodiment of the invention.
- FIGURE 31 is a side view of the male part shown in. Figure 30;
- FIGURE 32 is a bottom view of the male part shown in Figure 31;
- FIGURE 33 is a left end view of the male part shown in Figure 31;
- FIGURE 34 is a right end view of the male part shown in Figure 31;
- FIGURE 35 is a bottom end view of a female receptacle part according to the fourth embodiment of the invention.
- FIGURE 36 is the same view as in Figure 35, showing an inserted and taper locked male part
- FIGURE 37 is a partial cross sectional side view of the fourth embodiment of the invention showing a male plug part inserted into, and taper locked to, the female receptacle, the latter shown in cross section.
- FIGURE 38 is a top plan view of the male part according to a fifth embodiment of the invention.
- FIGURE 39 is a side view of the male part shown in Figure 38;
- FIGURE 40 is a bottom view of the male part shown in Figure 39;
- FIGURE 41 is a left end view of the male part shown in Figure 39;
- FIGURE 42 is a right end view of the male part shown in Figure 39;
- FIGURE 43 is a bottom end view of a female receptacle part according to the fifth embodiment of the invention.
- FIGURE 44 is the same view as m Figure 11, showing an inserted and taper locked male part
- FIGURE 45 is a partial cross sectional side view of the fifth embodiment of the invention showing a male plug part inserted into, and taper locked to, the female receptacle, the latter shown in cross section.
- Figure 1 shows a rotary spade drill bit assembly employing the concepts of the present invention, the Figure 1 representation being taken from Applicant's copending application entitled “ROTARY DRILL ARRANGEMENT” , filed simultaneously herewith and bearing U.S. Application Serial No. . in that copending application, a rotary spade drill 1 is basically comprised of three parts, a spade drill body 3, a spade insert 5, and a rotary cutter 7 mounted on the spade insert 5, the rotary cutter 7 being exposed to the material being drilled through a cutout in the lower right hand corner of the rotary spade drill body 3 as shown in Figure 1.
- a spade insert 5 shown in detail in Figure 3, is axially inserted into an opening 15 of spade drill body 3 in an insertion direction 4, as best seen in Figure 2, and, using prior art techniques, would be inserted fully into opening 15 until the top surface 11 of the spade insert 5 abuts the stop surface 13 at the bottom of the opening 15, at which time a rivet 9 would be fixed in place.
- the spade insert 5 may be provided with tapered walls 17 and 19 to effect a taper lock function with the opening 15 as will be described hereinafter. No rivet is required to hold the spade insert 5 in place, and the spade insert length will be sized so as to leave a slight gap 2 between the upper surface 11 of the spade insert 5 and the bottom 13 of the opening 15.
- Figure 4 is a side view of the spade insert 5 showing a rotatable cutter 7 in place. It will be appreciated that, as the spade insert is rotated clockwise (as seen from the top of the drill) , and the rotary cutter 7 is pushed into the material to be cut or drilled, a rearwardly directed force will be transmitted to the portion of the spade insert 5 upon which the cutter 7 is mounted. It would be desirable, then, to insure that the rear surface of the spade insert 5 behind the rotary cutter 7 would be solidly supported by the female body portion 3, and this is accomplished by the present invention as will be evident from the discussion of certain embodiments to be described hereinafter.
- the spade insert 5 when the invention is used as the coupling means for mounting a spade insert into a rotary spade drill body, the spade insert 5 must extend a small distance at the sides and at the bottom of the female body 3, in order to expose the cutting edges of the spade insert 5 to the material or substance being cut or drilled without interference by the body 3.
- Figure 5 shows a male plug part 29 and female receptacle 31, the receptacle 31 having an opening 33 designed and configured to receive the male plug 29 in an insertion direction, i.e. in the direction of the arrowed lead line 40.
- the dashed lines in Figure 5 indicate that the end walls 32 and 24 may be removed without functionally affecting the operation of the various embodiments of the invention.
- the male part 29 in Figure 5 has a top surface 21, a bottom surface 23, a tapered exterior wall 47 on one side, and an opposing exterior tapered wall 49 on the opposite side of the male part 29.
- the slope of the tapered wall 47 is such that the wedge 36 is wider at the bottom 23 than it is at the top 21.
- the wedge 38 formed by the tapered wall 49 is wider at the bottom 23 than it is at the top 21.
- the opening 33 also has tapered walls 35 and 37 which have a taper that is complementary to that of tapered walls 47 and 49 of the male part.
- Figures 6-13 A first embodiment of the invention is shown in Figures 6-13.
- Figure 6 shows a top view of the male part 29 having a top surface 21 and sloping, or tapered, sidewalls 47 and 49.
- Figure 7 is a side view of the first embodiment of the invention best showing the sloped or tapered wall 47 and, in phantom, the sloped or tapered wall 49 on the other side of the male part 29.
- Figure 8 is a bottom view of the male part of Figure 7 showing, as in Figures 6 and 7, that the walls 47 and 49 of the male part 29 diverge in the insertion direction 40.
- the tapered walls 47 and 49 are also planar in shape and are angled generally inwardly forming pointed edges 46 and 48, respectively. These pointed edges overlap corresponding and complementary pointed edges 35 and 37 on the female part ( Figures 5 and 11) in a dovetail-like fashion.
- pointed edges such as 46 and 48 shown in Figure 8 are formed on the male and female parts, their purpose being to keep the engaged and taper locked surfaces 47 and 49 of the male part and 35 and 37 of the female part from moving laterally of the direction of insertion 40.
- the pointed edges will not be specifically identified or commented upon when describing embodiments 2-4.
- Figures 9 and 10 show the left and right end views, respectively, of the male part 29 shown in Figure 7, the tapered surface 47 being visible in Figure 9, and the tapered surface 49 being visible in Figure 10.
- Figure 11 is a bottom view of a generic female receptacle 31 having an opening 33 and tapered sidewalls 35 and 37 as described earlier.
- the male plug part 29 is inserted into opening 33, as shown in Figure 12, also a bottom view of the male/female part combination, the tapered surfaces 47 and 49 of the male part slide in surface contact with the tapered surfaces 35 and 37, respectively, of the female part 31.
- the further the male part is inserted into the opening 33 the greater the force applied by the female part to push the tapered surfaces 47 and 49 laterally, i.e. outwardly away from the central insertion axis 59 common to both the male part 29 and female part 31.
- the assembled male/female arrangement is ready for use, such as would be the case for a rotary spade drill assembly as shown in Figures 1-4.
- a rotary spade drill assembly as shown in Figures 1-4.
- the equivalent component for a spade insert is male part 29, and the dashed lines indicated by numeral 7 represent the position of a rotary cutter mounted on the male part 29.
- Figure 13 shows the female part 31 in cross section and the male part 29 in full side view and also fully inserted into the female part.
- This view shows the relationship between the tapered walls 35,37,47, and 49 (the dashed line 35 is for understanding only, as the surface it represents is, in fact, on the portion of female part 31 that was removed for showing the cross section in Figure 13) .
- Figure 14 shows a top view of the male part 69 having a
- top surface 61 and sloping, or tapered, sidewalls 87, 87a, 89
- Figure 15 is a side view of the second embodiment of
- the male part 69 are located directly behind walls 87, 87a.
- Figure 16 is a bottom view of the male part of Figure 15
- tapered walls 87, 87a, 89, and 89a are also known as tapered walls 87, 87a, 89, and 89a.
- Figures 17 and 18 show the left and right end views
- Figure 19 is a bottom view of a generic female receptacle 71
- Figure 21 shows the female part 71 in cross section
- a third embodiment of the invention is shown in Figures 22-29.
- Figure 22 shows a top view of the male part 109 having a top
- Figure 23 is a side view of the third embodiment of
- Figure 24 is a bottom view of the male part of Figure 23
- Walls 127a and 129 are not tapered in the
- the tapered walls 127 and 129a are also
- Figures 25 and 26 show the left and right end views
- Figure 27 is a bottom view of a generic female receptacle 111
- the male part 109 is inserted into the opening 113, the
- tapered surfaces 127 and 129a laterally, i.e. outwardly away
- male part 109 is in the direction of arrow (I) shown in Figure
- Figure 29 shows the female part 111 in cross section
- Figure 30 shows a top view of the male part 149 having a
- top surface 141 and a single sloping, or tapered, sidewall
- Figure 31 is a side view of the fourth embodiment of the
- Figure 32 is a bottom view of the male part of Figure 31
- male part 149 diverges in the insertion direction 40 relative
- the tapered wall 169 is also planar in shape
- Figures 33 and 34 show the left and right end views
- Figure 35 is a bottom view of a generic female receptacle 151
- the male plug part 149 is inserted into opening 153, as shown
- the tapered surface 169 of the male part slides in surface contact with the tapered surface 157 of the female
- male part 149 is in the direction of arrow (o) shown in Figure
- a spade insert is male part 149. Due to the forces tending to rotate male part 149 in the direction of arrow (p) , the lower
- Figure 37 shows the female part 151 in cross section
- a fifth embodiment of the invention is shown in Figures 38-45.
- Figure 38 shows a top view of the male part 229 having a top
- Figure 39 is a side view of the fifth embodiment of the
- Figure 40 is a bottom view of the male part of Figure 39
- the tapered walls 247 and 249 are also planar in shape and are angled generally outwardly.
- Figures 41 and 42 show the left and right end views
- Figure 43 is a bottom view of a generic female receptacle 231
- the male plug part 229 is inserted into opening 233, as shown
- Figure 45 shows the female part 231 in cross section
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU87604/98A AU8760498A (en) | 1997-08-01 | 1998-07-30 | Taper lock arrangement |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US90503897A | 1997-08-01 | 1997-08-01 | |
US08/905,038 | 1997-08-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1999006172A2 true WO1999006172A2 (en) | 1999-02-11 |
WO1999006172A9 WO1999006172A9 (en) | 2001-05-31 |
Family
ID=25420205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1998/015741 WO1999006172A2 (en) | 1997-08-01 | 1998-07-30 | Taper lock arrangement |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU8760498A (en) |
WO (1) | WO1999006172A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1481757A1 (en) * | 2003-05-29 | 2004-12-01 | United Technologies Corporation | Dual wedge fixture locator |
-
1998
- 1998-07-30 AU AU87604/98A patent/AU8760498A/en not_active Abandoned
- 1998-07-30 WO PCT/US1998/015741 patent/WO1999006172A2/en active Application Filing
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1481757A1 (en) * | 2003-05-29 | 2004-12-01 | United Technologies Corporation | Dual wedge fixture locator |
US6981334B2 (en) | 2003-05-29 | 2006-01-03 | United Technologies Corporation | Dual wedge fixture locator |
Also Published As
Publication number | Publication date |
---|---|
WO1999006172A9 (en) | 2001-05-31 |
AU8760498A (en) | 1999-02-22 |
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