CA1091064A - Motor quick-change chuck system for tool having cylindrically shaped adapter portion - Google Patents
Motor quick-change chuck system for tool having cylindrically shaped adapter portionInfo
- Publication number
- CA1091064A CA1091064A CA303,742A CA303742A CA1091064A CA 1091064 A CA1091064 A CA 1091064A CA 303742 A CA303742 A CA 303742A CA 1091064 A CA1091064 A CA 1091064A
- Authority
- CA
- Canada
- Prior art keywords
- tool
- adapter portion
- body member
- cylindrically shaped
- spherically shaped
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- 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
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/22—Jaws in the form of balls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
- Automatic Tool Replacement In Machine Tools (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
There is disclosed a tool for use in a tool-holding chuck having locking means including a plurality of spherically shaped balls for securing the tool, comprising an elongated cylindrically shaped body member. The tool has a working sur-face at a first end thereof and an adapter portion at the other end of the elongated cylindrically shaped body member. The adapter portion has a beveled end surface facing the working surface at the first end of the elongated cylindrically shaped body member. The adapter portion has a plurality of spherically shaped dimples equiangularly disposed about the central axis of the tool around the outer surface of said adapter portion.
The adapter portion further includes a circumferential recess surrounding the spherically shaped dimples equiangularly dis-posed about the central axis of the tool around the outer sur-face of the adapter portion.
There is disclosed a tool for use in a tool-holding chuck having locking means including a plurality of spherically shaped balls for securing the tool, comprising an elongated cylindrically shaped body member. The tool has a working sur-face at a first end thereof and an adapter portion at the other end of the elongated cylindrically shaped body member. The adapter portion has a beveled end surface facing the working surface at the first end of the elongated cylindrically shaped body member. The adapter portion has a plurality of spherically shaped dimples equiangularly disposed about the central axis of the tool around the outer surface of said adapter portion.
The adapter portion further includes a circumferential recess surrounding the spherically shaped dimples equiangularly dis-posed about the central axis of the tool around the outer sur-face of the adapter portion.
Description
1091~ ;
The present invention relates to tools> more particularly, to tools having an adapter portion, such as drills.
Straight chucks and adapters are known in the art and which may be contrasted with the present construction wherein three balls and six detents in an adapter are utilized, thereby requiring an average rotation of 30 for engagement. One or two balls with corresponding number of detents are also provided in the prior art whereby 180 or 360 rotation could be required to engage. Further in contrast with this latter con-figuration, the present invention utilizes a tool having recesses in the form of dimples which arespherically shaped, thereby reducing angular free play, instead of recesses as shown in the latter prior art configuration which are elongated and therefore more difficult to generate. In accordance with a first embodiment of a chuck for use with the invention a collar in the chuck is raised in the direction of drilling so that the drill cannot be dislodged when bumping the work piece, whereas the collar in the referenced chuck moves in the opposite direction. The adapter in accordance with the present invention is a low-cost integral throw-away portion of tool, e.g., drill, whereas the referenced adapter contains a tapered hole and is therefore more expensive, being added temporarily to the drill. The present chuck configuration is threaded for utilization in hand-held motors, whereas ` the referenced chuck utilizes morse taper adapted for large stationary machines.
Another example of the prior art illustrative of tool-handling chucks and adapters, utilizes a conical adapter, in contrast to the present cylindrical adapter, which further utilizes a drill tool having an integral adapter portion. This conical adapter is threaded to the drill tool and also utilizes angled elongated recesses in the adapter to lock in the drilling machine, thereby requiring some initial rotation until lock-up and requiring further rotation for drill retraction. In accordance with an embodiment
The present invention relates to tools> more particularly, to tools having an adapter portion, such as drills.
Straight chucks and adapters are known in the art and which may be contrasted with the present construction wherein three balls and six detents in an adapter are utilized, thereby requiring an average rotation of 30 for engagement. One or two balls with corresponding number of detents are also provided in the prior art whereby 180 or 360 rotation could be required to engage. Further in contrast with this latter con-figuration, the present invention utilizes a tool having recesses in the form of dimples which arespherically shaped, thereby reducing angular free play, instead of recesses as shown in the latter prior art configuration which are elongated and therefore more difficult to generate. In accordance with a first embodiment of a chuck for use with the invention a collar in the chuck is raised in the direction of drilling so that the drill cannot be dislodged when bumping the work piece, whereas the collar in the referenced chuck moves in the opposite direction. The adapter in accordance with the present invention is a low-cost integral throw-away portion of tool, e.g., drill, whereas the referenced adapter contains a tapered hole and is therefore more expensive, being added temporarily to the drill. The present chuck configuration is threaded for utilization in hand-held motors, whereas ` the referenced chuck utilizes morse taper adapted for large stationary machines.
Another example of the prior art illustrative of tool-handling chucks and adapters, utilizes a conical adapter, in contrast to the present cylindrical adapter, which further utilizes a drill tool having an integral adapter portion. This conical adapter is threaded to the drill tool and also utilizes angled elongated recesses in the adapter to lock in the drilling machine, thereby requiring some initial rotation until lock-up and requiring further rotation for drill retraction. In accordance with an embodiment
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.
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..
hereinafter described, the stop for the collar is provided in the chuck and ball reliefs are utilized for indexing, the present collar also serving as the spring holder, thereby permitting one pin to serve all functions. The chuck used with the last-mentioned example of the prior art is of increased complexity compared to the described chuck, in that two stops are provided in the collar to stop rotation and two separate stops for the spring. In contrast with the prior art extension spring, in an embodiment hereinafter described a single wind-up spring is utilized in the chuck.
Accordingly, the present invention provides a tool for use in a tool-holding chuck having locking means including a plurality of spherically shaped balls for securing the tool, said tool comprising an elongated cylindrically shaped body member, said tool having a working surface at a first end thereof and an adapter portion at the other end of said elongated f cylindrically shaped body member, said adapter portion having a beveled end surface facing said working surface at said first end of said elongated cylindrically shaped body member, said adapter portion having a plurality of lO~i~i~
spherically shaped d-imples equiangularly disposed about the central axis of said tool around the outer surface of said adapter portion, and said adapter portion further including a circumferential recess surrounding said plurality of spherically shaped dimples equiangularly disposed about the central axis of said tool around the outer surface of said adapter portion.
The invention, toqether with the objects and features thereof, will be more clearly understood when the following description is read in connection with the accompanying drawings in which:
Figure 1 is a perspective view of a hand-held portable motor having a spindle coaxial with the motor central axis, showing a chuck having an axially spring-biased collar and tool having an adapter portion coaxiarly disposed in the chuck;
Figure 2 is a vertical cross section of the chuck and tool shown in Figure l;
Figure 3 is a cross section of the chuck and tool showing adapter portion thereof taken along line 3-3 of s Figure 2;
Figure 4 is a cross section similar to Figure 2 of the chuck~and adapter portion of the tool showing the adapter portion being withdrawn;
Figure 5 is a cross section taken along line 5-5 of Figure 4 showing ball elements of the chuck shown in Figures 1 to 4 in an unlocked condition;
Figure 6 is an exploded perspective view showing in more detail the chuck assembly and tool having an adapter portion of Figure l;
.
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Figure 7 i~ ~ view in perspective of a hand-held portable motor having a spindle angularly displaced 90~
with respect to the motor control a~:is, further showing a chuc~ ~vinq a rotary spring-biased collar and tool having ~n adapter portion coaxially disposed in the chuck;
Figure 8 is an exploded perspective of the tool and chuck of Figure 7:
Figure 9 is a vertical cross section of chuck and adapter portion of the tool shown in Figure 7;
Figure 10 is a cross-sectional view taken along the lines 4-4 of chuck and adapter portion shown in Figure 9, Figure 11 is a cross-sectional view similar to Figure 9, however, showing the adapter portion being withdrawn;
Figure 12 is a cross-sectional view of chuck and adapter portion of Figure 11 taken along the lines 6-6.
Turning now to Figure 1, it will be noted that hand-held portable motor 10 is provided with a chuck 12 for retaining and driving a tool, viz., a drill bit 14 ; having an adapter portion 16 concentrically disposed within chuck 120 Figure 2 is a vertical cross section of the chuck 12~and tool 14 of Figure 1 showing in more detail the parts of the present system. Chuck 12 comprises a generally cylindrically shaped body member 18 having a hollow first end portion 20, concentrically disposed hollow first end portion 20 is threaded on the inner wall surface thereof to accept the mating threaded spindle 22 of portable motor 10.
Hollow first end portion 20 is concentric with ' 109i(~;~
hollow end portion 24 at the other end of cylindrically shaped body member 18 of chuck 12 which accepts adapter portion 26 of tool 14, thereby minimizing tool 14 run-out tendencies. More detailed discussion of tool 14 configu-S ration in hereinafter discussed in connection with Figure 6.
However, it should be noted that cylindrically sha~ed adapter portion 26 includes six (6) sphericalIy shaped dimples 28 equiangularly disposed about the central axis of tool 14 around the outer surface of adapter portion 26.
Also it should be further noted that three balls 30 (more easily seen in Figure 3) are controlled by chuck collar member 32 and locked in dimples 28 (as shown in Figure 2) to permit tool 14 retention, or withdrawn from dimples 28 (as seen in Figure 4) to permit tool 14 withdrawal.
In the chuck embodiment of Figures 1 to 5, balls 30 are disengaged for removing adapter portion 26 of tool 14 by raising spring-loaded collar member 32 of chuck 12, thereby permitting balls 30 to move outward radially (with respect to the chuck 12 central axis) into recesses 40 formed in the inner wall surface o~ collar member 32 adjacent radially extending shoulder portions 42 utilized to lock balls 30 in dimples 28. When collar member 32 is released, axially ~iasing spirally wound spring member 44 preloaded in position by retaining ring 47 will drive collar member 32 downward when dimples 28 in adapter portion 26 are aligned with balls 30 of chuck 12, thereby trapping balls 30 in dimples 28 of adapter portion 26. It will be noted from Figure 4 that collar member 32 must be moved towards the work piece beyond the end of tool 14 for tool removal, thus accidental disengagement, which might occur when the ~- .
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work piece is contac~-ed, is prevented.
When adapter portion 26 is installed ~y insertion into chuck 12 within body member 18, proper depth for engaJement is realized upon contact with roll pin depth stop 52. Adapter portion 26 i9 formed of hardened steel, e.g. 1020 steel case-hardened, 1095 through-hardened, to minimize dimple 28 brinelling and also for the purpose of minimizing damage to the outside diameter thereof that might occur in handling or storage. A slip fit is provided between the outside diameter of adapter portion 26 and the inner bore 24 diameter, e.g. .0005 to .0015 inches clearance between these surfaces. Cylindrically shaped body member 18 has an outer knurled surface 56, thereby providing sufficient roughening to allow hand rotation of body member 18 to free tool 14 in the event of handin-up of tool 14 in the work piece. Collar member 32 is also provided with a knurled outer surface 27 rearward of the work piece. However, it is left smooth at the forward region to minimize damage to the work piece that might occur upon work contact. A disassembled exploded view is shown in Figure 6 of the chuck 12 and tool 14 with adapter portion 26, which adapter portion 26 has the front surface 58 thereof beveled to prevent work damage in the event of contact therewith. A circumferential recess 67 is provided in adapter portion 26 surrounding dimples 28 to clear debris and permit some deformation of the dimples without preventing insertion in the chuck.
Installation and removal of adapter 26 is - accomplished in the following manner: collar 32 is gripped at knurled portion 56 and raised, thus allowing the three balls 30 to be disengaged from the adapter detents 28 by moving outward radially into the collar recess 40. Tool 14 and adapter 26 are now free for remo~tal of adapter 26.
During installation adapter 26 is pushed into the bore 24 ' 5 with the collar 32 still raised, until roll pin depth stop 52 is reached. Now collar 32 is released and compression spring 44 will automatically snap the collar 32 closed and , trap the balls 30 between surface 42 and detents 28 upon ! rotation of adapter 26 to align detents 28 with ball sockets 80.
Proceeding now to Figure 7, it will be seen that a suitable hand-held angle motor 110 is utilized instead of a straight drive motor 10 as shown in Figure 1, which motor 110 is provided with a chuck 112 having a rotary spring-biased collar 212 (as seen in Figures 9 and 11) to drive ; tool 14, viz., a drill bit having an adapter portion 16 of the same type shown in connection with the previous description wherein the same numerals were utilized and which description may be referred to for further under-standing thereof. ChUck 112, shown;in more detail in a cross-sectional view thereof in Figures 9 and 11, includes a threaded first end portion 120 that receives spindle 122 of angle motor 110. Threaded first end portion 120 is concentric with bore 126 in the other end of body member 118, which bore 126 is a slip fit accepts adapter portion 26 9f tool 14, thereby minimizing tool 14 run-out tendencies. In a comparison of Figures 9 and 11 hereinafter described with respect to Figures 2 and 4 earlier described, it will be observed that three (3) balls 30 are also utilized in chuck 112 as were utilized in chuck 12 and that balls 30 are also ....~
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locked in the six (6) spherically shaped dimples 28 to drive tool 14, albeit in a different manner as hereinafter described, by chuck 112. ChUCk 112 utilizes a rotary spring-biased collar member 212, biased by single-turn spring 144, which collar member 212 upon rotation permits removal of or insertion of adapter portion 26 of tool 14.
The aforementioned rotation of collar member 212 permits balls 30 to move outwardly in a radial direction with respect to the central axis of adapter 112 into recesses 206. When collar member 212 is released, wind-up single-turn spring 144 (as readily seen in Figure 10) returns collar member 212 to the engaged position against fixed stopping member 228 which is pressed into body member 118, thereby trapping balls 30 between dimples 28 and raised areas 150.
It.should be noted that collar member 212 of chuck 112 is rotated in the direction of tool 14 rotation for removal of adapter portion 26, thereby preventing accidental disengagement upon work contact by adapter portion 26. Stopping member 228, which collar member 212 seats against, provides the further function of providing anchoring means for one end of spring 114 (as readily observed in Figure 10), while the other end of spring 114 is hooked over one of the spline-like recesses 206 in body member 118 Over rotation of wind-up spring 114 is not possible, since the recess 206 in collar member 212 reaches stopping member 228 before spring 114 can be overwound.
Collar member 212 is provided with a slip fit on chuck body member 118 and held in position by means of retaining ring 240~
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It should b~ further noted that when collar 212 is rotated in the direction of drill rotation, spring 114 is wound up between pin 228 and recess 151, thereby allowing balls 30 to fall into recesses 206, which S disengages balls 30 from the adapter dimples 28. When installing adapter 26 with collar 212 rotated, adapter 26 is simply pushed into bore 126 until the bottom is reached.
Upon release of collar 212, collar 212 will auto~atically snap closed to fixed pin 228 when adapted dimples 28 are aligned with ball sockets 80, thereby providing positive engagement with balls 30 trapped between detents 28 and raised surfaces 150, '' ' ' _ 10 --, .
.
,,~ . .
10910~;~
..
hereinafter described, the stop for the collar is provided in the chuck and ball reliefs are utilized for indexing, the present collar also serving as the spring holder, thereby permitting one pin to serve all functions. The chuck used with the last-mentioned example of the prior art is of increased complexity compared to the described chuck, in that two stops are provided in the collar to stop rotation and two separate stops for the spring. In contrast with the prior art extension spring, in an embodiment hereinafter described a single wind-up spring is utilized in the chuck.
Accordingly, the present invention provides a tool for use in a tool-holding chuck having locking means including a plurality of spherically shaped balls for securing the tool, said tool comprising an elongated cylindrically shaped body member, said tool having a working surface at a first end thereof and an adapter portion at the other end of said elongated f cylindrically shaped body member, said adapter portion having a beveled end surface facing said working surface at said first end of said elongated cylindrically shaped body member, said adapter portion having a plurality of lO~i~i~
spherically shaped d-imples equiangularly disposed about the central axis of said tool around the outer surface of said adapter portion, and said adapter portion further including a circumferential recess surrounding said plurality of spherically shaped dimples equiangularly disposed about the central axis of said tool around the outer surface of said adapter portion.
The invention, toqether with the objects and features thereof, will be more clearly understood when the following description is read in connection with the accompanying drawings in which:
Figure 1 is a perspective view of a hand-held portable motor having a spindle coaxial with the motor central axis, showing a chuck having an axially spring-biased collar and tool having an adapter portion coaxiarly disposed in the chuck;
Figure 2 is a vertical cross section of the chuck and tool shown in Figure l;
Figure 3 is a cross section of the chuck and tool showing adapter portion thereof taken along line 3-3 of s Figure 2;
Figure 4 is a cross section similar to Figure 2 of the chuck~and adapter portion of the tool showing the adapter portion being withdrawn;
Figure 5 is a cross section taken along line 5-5 of Figure 4 showing ball elements of the chuck shown in Figures 1 to 4 in an unlocked condition;
Figure 6 is an exploded perspective view showing in more detail the chuck assembly and tool having an adapter portion of Figure l;
.
109106~
Figure 7 i~ ~ view in perspective of a hand-held portable motor having a spindle angularly displaced 90~
with respect to the motor control a~:is, further showing a chuc~ ~vinq a rotary spring-biased collar and tool having ~n adapter portion coaxially disposed in the chuck;
Figure 8 is an exploded perspective of the tool and chuck of Figure 7:
Figure 9 is a vertical cross section of chuck and adapter portion of the tool shown in Figure 7;
Figure 10 is a cross-sectional view taken along the lines 4-4 of chuck and adapter portion shown in Figure 9, Figure 11 is a cross-sectional view similar to Figure 9, however, showing the adapter portion being withdrawn;
Figure 12 is a cross-sectional view of chuck and adapter portion of Figure 11 taken along the lines 6-6.
Turning now to Figure 1, it will be noted that hand-held portable motor 10 is provided with a chuck 12 for retaining and driving a tool, viz., a drill bit 14 ; having an adapter portion 16 concentrically disposed within chuck 120 Figure 2 is a vertical cross section of the chuck 12~and tool 14 of Figure 1 showing in more detail the parts of the present system. Chuck 12 comprises a generally cylindrically shaped body member 18 having a hollow first end portion 20, concentrically disposed hollow first end portion 20 is threaded on the inner wall surface thereof to accept the mating threaded spindle 22 of portable motor 10.
Hollow first end portion 20 is concentric with ' 109i(~;~
hollow end portion 24 at the other end of cylindrically shaped body member 18 of chuck 12 which accepts adapter portion 26 of tool 14, thereby minimizing tool 14 run-out tendencies. More detailed discussion of tool 14 configu-S ration in hereinafter discussed in connection with Figure 6.
However, it should be noted that cylindrically sha~ed adapter portion 26 includes six (6) sphericalIy shaped dimples 28 equiangularly disposed about the central axis of tool 14 around the outer surface of adapter portion 26.
Also it should be further noted that three balls 30 (more easily seen in Figure 3) are controlled by chuck collar member 32 and locked in dimples 28 (as shown in Figure 2) to permit tool 14 retention, or withdrawn from dimples 28 (as seen in Figure 4) to permit tool 14 withdrawal.
In the chuck embodiment of Figures 1 to 5, balls 30 are disengaged for removing adapter portion 26 of tool 14 by raising spring-loaded collar member 32 of chuck 12, thereby permitting balls 30 to move outward radially (with respect to the chuck 12 central axis) into recesses 40 formed in the inner wall surface o~ collar member 32 adjacent radially extending shoulder portions 42 utilized to lock balls 30 in dimples 28. When collar member 32 is released, axially ~iasing spirally wound spring member 44 preloaded in position by retaining ring 47 will drive collar member 32 downward when dimples 28 in adapter portion 26 are aligned with balls 30 of chuck 12, thereby trapping balls 30 in dimples 28 of adapter portion 26. It will be noted from Figure 4 that collar member 32 must be moved towards the work piece beyond the end of tool 14 for tool removal, thus accidental disengagement, which might occur when the ~- .
lU~
work piece is contac~-ed, is prevented.
When adapter portion 26 is installed ~y insertion into chuck 12 within body member 18, proper depth for engaJement is realized upon contact with roll pin depth stop 52. Adapter portion 26 i9 formed of hardened steel, e.g. 1020 steel case-hardened, 1095 through-hardened, to minimize dimple 28 brinelling and also for the purpose of minimizing damage to the outside diameter thereof that might occur in handling or storage. A slip fit is provided between the outside diameter of adapter portion 26 and the inner bore 24 diameter, e.g. .0005 to .0015 inches clearance between these surfaces. Cylindrically shaped body member 18 has an outer knurled surface 56, thereby providing sufficient roughening to allow hand rotation of body member 18 to free tool 14 in the event of handin-up of tool 14 in the work piece. Collar member 32 is also provided with a knurled outer surface 27 rearward of the work piece. However, it is left smooth at the forward region to minimize damage to the work piece that might occur upon work contact. A disassembled exploded view is shown in Figure 6 of the chuck 12 and tool 14 with adapter portion 26, which adapter portion 26 has the front surface 58 thereof beveled to prevent work damage in the event of contact therewith. A circumferential recess 67 is provided in adapter portion 26 surrounding dimples 28 to clear debris and permit some deformation of the dimples without preventing insertion in the chuck.
Installation and removal of adapter 26 is - accomplished in the following manner: collar 32 is gripped at knurled portion 56 and raised, thus allowing the three balls 30 to be disengaged from the adapter detents 28 by moving outward radially into the collar recess 40. Tool 14 and adapter 26 are now free for remo~tal of adapter 26.
During installation adapter 26 is pushed into the bore 24 ' 5 with the collar 32 still raised, until roll pin depth stop 52 is reached. Now collar 32 is released and compression spring 44 will automatically snap the collar 32 closed and , trap the balls 30 between surface 42 and detents 28 upon ! rotation of adapter 26 to align detents 28 with ball sockets 80.
Proceeding now to Figure 7, it will be seen that a suitable hand-held angle motor 110 is utilized instead of a straight drive motor 10 as shown in Figure 1, which motor 110 is provided with a chuck 112 having a rotary spring-biased collar 212 (as seen in Figures 9 and 11) to drive ; tool 14, viz., a drill bit having an adapter portion 16 of the same type shown in connection with the previous description wherein the same numerals were utilized and which description may be referred to for further under-standing thereof. ChUck 112, shown;in more detail in a cross-sectional view thereof in Figures 9 and 11, includes a threaded first end portion 120 that receives spindle 122 of angle motor 110. Threaded first end portion 120 is concentric with bore 126 in the other end of body member 118, which bore 126 is a slip fit accepts adapter portion 26 9f tool 14, thereby minimizing tool 14 run-out tendencies. In a comparison of Figures 9 and 11 hereinafter described with respect to Figures 2 and 4 earlier described, it will be observed that three (3) balls 30 are also utilized in chuck 112 as were utilized in chuck 12 and that balls 30 are also ....~
109~ ~
locked in the six (6) spherically shaped dimples 28 to drive tool 14, albeit in a different manner as hereinafter described, by chuck 112. ChUCk 112 utilizes a rotary spring-biased collar member 212, biased by single-turn spring 144, which collar member 212 upon rotation permits removal of or insertion of adapter portion 26 of tool 14.
The aforementioned rotation of collar member 212 permits balls 30 to move outwardly in a radial direction with respect to the central axis of adapter 112 into recesses 206. When collar member 212 is released, wind-up single-turn spring 144 (as readily seen in Figure 10) returns collar member 212 to the engaged position against fixed stopping member 228 which is pressed into body member 118, thereby trapping balls 30 between dimples 28 and raised areas 150.
It.should be noted that collar member 212 of chuck 112 is rotated in the direction of tool 14 rotation for removal of adapter portion 26, thereby preventing accidental disengagement upon work contact by adapter portion 26. Stopping member 228, which collar member 212 seats against, provides the further function of providing anchoring means for one end of spring 114 (as readily observed in Figure 10), while the other end of spring 114 is hooked over one of the spline-like recesses 206 in body member 118 Over rotation of wind-up spring 114 is not possible, since the recess 206 in collar member 212 reaches stopping member 228 before spring 114 can be overwound.
Collar member 212 is provided with a slip fit on chuck body member 118 and held in position by means of retaining ring 240~
10910~
It should b~ further noted that when collar 212 is rotated in the direction of drill rotation, spring 114 is wound up between pin 228 and recess 151, thereby allowing balls 30 to fall into recesses 206, which S disengages balls 30 from the adapter dimples 28. When installing adapter 26 with collar 212 rotated, adapter 26 is simply pushed into bore 126 until the bottom is reached.
Upon release of collar 212, collar 212 will auto~atically snap closed to fixed pin 228 when adapted dimples 28 are aligned with ball sockets 80, thereby providing positive engagement with balls 30 trapped between detents 28 and raised surfaces 150, '' ' ' _ 10 --, .
Claims (6)
1. A tool for use in a tool-holding chuck having locking means including a plurality of spherically shaped balls for securing the tool, comprising an elongated cylindrically shaped body member, said tool having a working surface at a first end thereof and an adapter portion at the other end of said elongated cylindrically shaped body member, said adapter portion having a beveled end surface facing said working surface at said first end of said elongated cylindrically shaped body member, said adapter portion having a plurality of spherically shaped dimples equiangularly disposed about the central axis of said tool around the outer surface of said adapter portion, and said adapter portion further including a circumferential recess surrounding said plurality of spherically shaped dimples equiangularly disposed about the central axis of said tool around the outer surface of said adapter portion.
2. A tool as defined in claim 1, wherein said adapter portion has a diameter greater than said first end portion of said elongated cylindrically shaped body member.
3. A tool for use in a quick change tool-holding chuck having locking means including a plurality of spherically shaped balls for securing the tool, comprising an elongated cylindrically shaped body member, said tool having a working surface at a first end thereof and an adapter portion at the other end of said elongated cylindrically shaped body member, said adapter portion having a beveled end surface facing said working surface at said first end of said elongated cylindrically shaped body member, said adapter portion having a plurality of spherically shaped dimples equiangularly disposed about the central axis of said tool around the outer surface of said adapter portion, said adapter portion further including a circumferential recess surrounding said plurality of spherically shaped dimples equiangularly disposed about the central axis of said tool around the outer surface of said adapter portion and, said adapter portion having a further beveled end surface at said other end of said elongated cylindrically shaped body member.
4. A tool as defined in claim 1 or claim 3 wherein there are six of said spherically shaped dimples, thereby requiring less than 60 degrees rotation for chuck engagement of said tool.
5. A machine tool as claimed in claim 1 in combination with a tool-holding chuck assembly having a generally cylindrically shaped body member, said generally cylindrically shaped body member having a hollow first end portion, said hollow first end portion having an inner wall surface threaded to accept the mating threaded spindle of a portable motor, said generally cylindrically shaped body member having a hollow second end portion concen-trically disposed relative to said hollow first end portion for receiving said adapter portion in slip fit relationship therewith; said tool-holding chuck assembly including three cylindrically shaped ball elements, and an axially spring-biased collar member adapted to be raised for causing said three cylindrically shaped ball elements to move outward radially into a recess in said collar member, thereby causing disengagement of said three spherically shaped ball elements from said spherically shaped dimples, said axially spring-biased collar member further adapted to be released for trapping said three spherically shaped ball elements between an inner surface portion of said collar member and said spherically shaped dimples.
6. A machine tool as claimed in claim 1 in combination with a tool-holding chuck assembly having a generally cylindrically shaped body member including a first end portion adapted for coupling to a portable motor and a hollow second end portion for receiving said adapter portion in slip fit relationship therewith; said tool-holding chuck assembly including three spherically shaped ball elements, and a rotary spring-biased collar member adapted to be rotated in the direction of tool rotation, thereby permitting disengagement of said three spherically shaped ball elements from said spherically shaped dimples, said rotary spring-biased collar member further adapted to be released for trapping said three spherically shaped ball elements between a raised inner surface of said assembly and said spherically shaped dimples.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US79940777A | 1977-05-23 | 1977-05-23 | |
| US79940677A | 1977-05-23 | 1977-05-23 | |
| US799,406 | 1977-05-23 | ||
| US799,407 | 1977-05-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1091064A true CA1091064A (en) | 1980-12-09 |
Family
ID=27122107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA303,742A Expired CA1091064A (en) | 1977-05-23 | 1978-05-19 | Motor quick-change chuck system for tool having cylindrically shaped adapter portion |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS549074A (en) |
| AU (1) | AU3630678A (en) |
| CA (1) | CA1091064A (en) |
| DE (1) | DE2822553A1 (en) |
| FR (1) | FR2391800A1 (en) |
| GB (1) | GB1603885A (en) |
| IL (1) | IL54753A (en) |
| NL (1) | NL7805565A (en) |
| SE (1) | SE7805757L (en) |
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|---|---|---|---|---|
| JPH0613824Y2 (en) * | 1986-01-09 | 1994-04-13 | 日東工器株式会社 | Disk grinder |
| DE4448024C5 (en) * | 1993-06-30 | 2015-01-08 | Nitto Kohki Co., Ltd. | Hole cutter connecting device and hole cutter |
| AU670373B2 (en) * | 1993-06-30 | 1996-07-11 | Nitto Kohki Co., Ltd. | Annular cutter connecting apparatus and annular cutter |
| JP4192084B2 (en) | 2003-06-17 | 2008-12-03 | ニッタ株式会社 | Multi-axis sensor |
| JP2005106679A (en) | 2003-09-30 | 2005-04-21 | Nitta Ind Corp | Multiaxial sensor unit and multiaxial sensor using the same |
| JP7477308B2 (en) * | 2020-01-20 | 2024-05-01 | 株式会社Subaru | Shank for cutting tool, cutting tool and cutting method |
| JP7260612B1 (en) * | 2021-10-14 | 2023-04-18 | 株式会社スギノマシン | processing tools |
| JP7263582B1 (en) * | 2022-03-01 | 2023-04-24 | 株式会社スギノマシン | processing tools |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1341934A (en) * | 1919-04-23 | 1920-06-01 | Manufacturers Machine Products | Tool-holder |
| US1835168A (en) * | 1929-02-27 | 1931-12-08 | Titan Tool Co | Slip driving device |
| CH371939A (en) * | 1959-03-04 | 1963-09-15 | Graemiger Ag Geb | Tool change chucks |
| US3398965A (en) * | 1966-05-26 | 1968-08-27 | Balas Collet Company | Quick change tool holder |
-
1978
- 1978-05-17 GB GB20210/78A patent/GB1603885A/en not_active Expired
- 1978-05-19 DE DE19782822553 patent/DE2822553A1/en not_active Withdrawn
- 1978-05-19 CA CA303,742A patent/CA1091064A/en not_active Expired
- 1978-05-19 AU AU36306/78A patent/AU3630678A/en active Pending
- 1978-05-19 SE SE7805757A patent/SE7805757L/en unknown
- 1978-05-21 IL IL54753A patent/IL54753A/en unknown
- 1978-05-22 JP JP6086678A patent/JPS549074A/en active Pending
- 1978-05-22 FR FR7815112A patent/FR2391800A1/en active Granted
- 1978-05-23 NL NL7805565A patent/NL7805565A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| DE2822553A1 (en) | 1978-12-07 |
| NL7805565A (en) | 1978-11-27 |
| IL54753A (en) | 1981-09-13 |
| FR2391800B1 (en) | 1984-06-29 |
| FR2391800A1 (en) | 1978-12-22 |
| SE7805757L (en) | 1978-11-24 |
| AU3630678A (en) | 1979-11-22 |
| JPS549074A (en) | 1979-01-23 |
| GB1603885A (en) | 1981-12-02 |
| IL54753A0 (en) | 1978-07-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |