CA2136262A1 - Floating punch-holder - Google Patents
Floating punch-holderInfo
- Publication number
- CA2136262A1 CA2136262A1 CA002136262A CA2136262A CA2136262A1 CA 2136262 A1 CA2136262 A1 CA 2136262A1 CA 002136262 A CA002136262 A CA 002136262A CA 2136262 A CA2136262 A CA 2136262A CA 2136262 A1 CA2136262 A1 CA 2136262A1
- Authority
- CA
- Canada
- Prior art keywords
- punch
- holder according
- cavity
- shank
- upper portion
- 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.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/12—Punching using rotatable carriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/34—Perforating tools; Die holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2614—Means for mounting the cutting member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
- B26F1/14—Punching tools; Punching dies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Punching Or Piercing (AREA)
Abstract
The present invention is related to a floating punch-holder comprising holding means adaptable to be attached to a punching apparatus, shank means having upper portion and lower portion, the upper portion of the shank being held by the holding means, punch means being connected to the lower portion of the shank means, die means adapted to cooperate with the punch means, wherein the holding means comprises a cavity adapted to accommodate and immobily lock the upper portion of the shank means, and wherein the upper portion having a configuration adapted to easily and accurately adjust the punch means in any position desired for alignment and centring with the die means while remaining in line as one or other adjustment is made. The holding means is incorporated within the punching apparatus, comprising a chuck means adaptable to be attached to the punching apparatus. The chuck means comprises an upper portion and lower portion, the upper portion is adapted to be securely attached to the apparatus and the lower portion accommodates the cavity and the chuck means has unitary configuration.
Description
2~36262 FLOATING PUNCH-HOLDER
The present invention relates to an apparatus for affixing a punch onto a machine such as a punch press, more particularly to a floating punch-holder, and provide the means to align the punch within the punch-holder with a corresponding hole in a die set on the bed or horn ofthe 5 aforesaid machine to avoid the need of using a spec~ e~l m ~hine or die set.
There is known US patent 4,757,609 describing an appar~lus for joining sheet m~tPri~l~
ili7in~ a novel die construction showing a punch assembly of a convPntinn~l construction including a punch body supporting a stripper retainer. Disposed within retainer is a stripper biased 10 to the stripping position by means of coil springs.
There are also known -^hi~es which are built specially for punching and provide all the f~^ilitips of ~ without complic2tinn~; however those m~hinec can only be used for punching.
- ~1362&~
There known _achines called "C-Frame Holder" which are made to receive a punch and die which will be aligned at all time, but those tools are l~mited to using them as an edge punch up to the throat depth of the frame holder.
There is also known a loating punch-holder which comprises a two-piece chuck that has a hexagonal shaped exterior with six cris-crossing Allen screws ali~mPnt The bottom portion of said chuck is used as a fqet~nPr. A "T"-shaped shank having a top portion of larger diameter and of a circular configuration is placed in said two-piece chuck. In this tool the adj~etmPnte; which are made to align the punch with the die will place the round-shaped top or head ofthe shank off 10 centre when using the a-ljetm~nt screws and as a result cause substantial difficulty in obtaining accurate qlig~.",. ."
It is therefore a primary object ofthis invention to provide an improved and simplified apparatus which per_its easy, quick and accurate qli~,....1 of a punch with the corresponding 15 blanking or drawing die.
The apparatus according to the present invention may be g~qrniehed with a stripper set on a spring so that the blanked mqtçriql _ay be stripped from the punch. The collar _ay also be used as a pressure pad if the punch is used for drawing metal.
Another advantage ofthe present invention is that more than one punch-holder may be used ~imllhq-neously without any ~1im.?neionql restrictions.
The present invention relates to an apparatus for affixing a punch onto a machine such as a punch press, more particularly to a floating punch-holder, and provide the means to align the punch within the punch-holder with a corresponding hole in a die set on the bed or horn ofthe 5 aforesaid machine to avoid the need of using a spec~ e~l m ~hine or die set.
There is known US patent 4,757,609 describing an appar~lus for joining sheet m~tPri~l~
ili7in~ a novel die construction showing a punch assembly of a convPntinn~l construction including a punch body supporting a stripper retainer. Disposed within retainer is a stripper biased 10 to the stripping position by means of coil springs.
There are also known -^hi~es which are built specially for punching and provide all the f~^ilitips of ~ without complic2tinn~; however those m~hinec can only be used for punching.
- ~1362&~
There known _achines called "C-Frame Holder" which are made to receive a punch and die which will be aligned at all time, but those tools are l~mited to using them as an edge punch up to the throat depth of the frame holder.
There is also known a loating punch-holder which comprises a two-piece chuck that has a hexagonal shaped exterior with six cris-crossing Allen screws ali~mPnt The bottom portion of said chuck is used as a fqet~nPr. A "T"-shaped shank having a top portion of larger diameter and of a circular configuration is placed in said two-piece chuck. In this tool the adj~etmPnte; which are made to align the punch with the die will place the round-shaped top or head ofthe shank off 10 centre when using the a-ljetm~nt screws and as a result cause substantial difficulty in obtaining accurate qlig~.",. ."
It is therefore a primary object ofthis invention to provide an improved and simplified apparatus which per_its easy, quick and accurate qli~,....1 of a punch with the corresponding 15 blanking or drawing die.
The apparatus according to the present invention may be g~qrniehed with a stripper set on a spring so that the blanked mqtçriql _ay be stripped from the punch. The collar _ay also be used as a pressure pad if the punch is used for drawing metal.
Another advantage ofthe present invention is that more than one punch-holder may be used ~imllhq-neously without any ~1im.?neionql restrictions.
These and other objects, features and advantages ofthe present invention will become apparent from the subsequent description and the appended claims, taken in conjunction with the accompanymg drawings.
SUMMARY OF THE lNVENTION
Broadly, the present invention is related to a floating punch-holder co~l~ing:
holding means adaptable to be attached to a plmc1lin~: apparatus;
shank means having upper portion and lower portion, the upper portion of said shank being held by said holding means;
punch means being connected to the lower portion of said shank means;
die means adapted to cooperate with said punch means;
wherein said holding means comprises a cavity adapted to accommodate and immobily lock the upper portion of said shank means, and wherein said upper portion having a configuration adapted to easily and accurately adjust said punch means in any position desired for ~ nmPnt and centrin~2;
15 with said die means while r~ ;;g in line as one or other . dj~ls~mPnt is made.
In another embo&ent, said holding means is incorporated within said punching apparatus, and said holding means comprise a chuck means adaptable to be attached to said punching apparatus. Said chuck means comprises an upper poItion and lower portion, said upper portion is adapted to be securely attached to said apparatus and said lower portion accommodates said cavity, and said chuck means having unitary co~ lion.
In yet another embo&ent, the upper portion of said shank means having a head or top portion, and wherein the ~limPn~ion~ of said upper portion in~ ling said head portion are smaller 4 ~35~62 than the ~limpneions of said cavity to provide a space necessary for successful adj~lstmPnt and movement of said shank means within said cavity;
said punch holder further comprises:
an ~lig~ .1 means adapted to cooperate with said head and provided to adjust and hold said 5 punch means in a set position, and fastener means adapted to securely lock said shank means within said cavity in immobile position without disturbing the adi~stmpnt of said punch means. Said cavity has subst~nti~lly cylindrical conli~ ion and said head portion having square-shaped configuration with rounded corners providing easy and wider adjllstmPnt of said shank means within said cavity, and said 10 ~li~mPnt means comprises a set of cris-cross screws located within said cavity, said screws allow to adjust said head portion in right-left or front-back positions during ~lignm~nt In still another embodiment, said f~etPnPr means comprises:
ti~htPnin3~l; means located within said cavity and locking means also located within said cavity.
15 Said tight~ning means comprises thread formed around an outer wall of said fastener means, said thread adapted to cooperate with the corresponding thread formed wlthin said cavity, and said locking means comprises a combination of an obtuse-angled groove formed around an outer wall of said f~et~ner means adapted to cooperate with a set of cris-cross screws located within said cavity, wherein said screws adapted to securely lock said fastener means by way of penetrating 20 into said groove, thus forcing said fastener means upwardly to lock immobily said shank means in place.
In still another embodiment, said groove comprises an upper edge and a lower edge, and ~ '' 5?52 wherein the upper edge of said groove is longer than the lower edge of said groove to facilitate succes.cfill locking of said fastener means by said cris-cross screws, and said groove is formed below said thread. The upper portion of said chuck means comprises a plate adapted to hold a number of said punch-holders aligned to each other, and said shank means having a T-shaped 5 configuration. The upper portion of said chuck means has a stub-like configuration.
In yet another embodiment, said floating punch-holder co~lise~.
holding means attached to said punching apparatus;
shank means having upper portion and lower portion, the upper portion of said shank being held by said holding means;
punch means being connected to the lower portion of said shank means;
die means adapted to cooperate with said punch means;
wherein said holding means comprises a cavity adapted to accommodate and immobily lock the upper portion of said shank means, and wherein said upper portion having a configuration adapted to easily and accurately adjust said punch means in any position desired for ali~.. ~l and centring 15 with said die means while re...-;..;..g in line as one or other adjlletm~nt is made.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 shows a side cross-section ofthe floating punch-holder according to the present invention.
Fig. 2 shows a side cross-section view of the first mollifi~ti. n of the chuck means taken along 20 the lines A-A of Fig.3.
Fig. 3 shows a bottom view of Fig. 2.
Fig. 4 shows a side view ofthe fastener means according to the present invention.
21~52~i2 _ 6 Fig. 5 is a bottom view of Fig. 4.
Fig. 6 shows a side view ofthe shank means according to the present invention.
Fig. 7 is a bottomview of Fig.6.
Fig. 8 shows a partial side cross-section ofthe punch-holder with a chuck means ofthe second 5 modification.
Fig. 9 is a top view of Fig. 8.
Fig. 10 shows a schematic plan cross-section view ofthe Prior Art .
Fig. 11 shows a schematic plan cross-section view of the assembly according to the present invention.
DETAILED DESCRIPTION OF THE PRESENT EMBODIMENTS
~ eferring now to drawings, Fig. 1 shows a floating punch-holder 10 comprising a chuck means 12 of unitary configuration having an upper portion 14 having in the first embodiment a shape of a stub provided for f~nin~ into a ram. The lower portion 16 ofthe chuck 12 having cavity 15 con~ictin~ of a lower cavity 20 and an upper cavity 22. Preferably the cavity 15 is of round or cylin(lri~l conl;guralion (see Fig. 2). Figures 6 and 7 show a shank means 24 comprising an upper portion or head 26 and a body 24 adapted to hold a punch 48 inserted into a bore 32 by means of a set screw (not shown) which is inserted into the corresponding opening 46. The head 26 of the shank 24 has a square-shaped configuration with the rounded comers, and is of smaller 20 (lim~.n~ion than the (limen~;~m ofthe upper portion 22 ofthe cavity 15.The shape ofthe head provides easy and wider adj~ mPnt of said shank 24 within the cavity 15 and also allows the shank 24 to be adjusted right-left or front-back during ~ nm~nt Said head 26 is aligned within _ 7 2l36?~;2 the upper portion 22 ofthe cavity 15 by ~lignmPnt means comprising a set of cris-cross screws 58 being inserted within the corresponding openings 18 formed in the lower portion 16 of chuck 15.
The punch-holder according to the present invention is further comprising a fastener means or collar 34 (see Figures 4 and 5) which is adapted to be fastened in to the cavity 15 ofthe chuck 12 5 by tightening means or thread portion 36 formed on the outer wall of said f~stPner 34. The fastener 34 is adapted to securely lock said shank means 24 within said cavity 15. The thread portion 36 in this case is cooperating with the corresponding thread formed around an inner wall ofthe lower portion 20 ofthe cavity 15. Below the thread portion 36 around the outer wall ofthe fastener 34 a groove 38 is for_ed having a configuration of an obtuse-angle. Preferably an upper 10 edge ofthe groove 38 is longer than a lower edge to facilitate sllcces.cfill locking of said fastener 34, wherein the groove is adapted to cooperate with a set of cris-cross screws 60 which are screwed into four corresponding openings 19 located at the lower portion 16 of chuck 12. This combination of groove 38 and set of cris-crossed screws 60 comprises a locking means, wherein said screws are adapted to penetrate into said groove 38 thus forcing said fastener 34 upwardly to lock immobily the shank 24 within the cavity 15. The lower portion 40 of the fastener 34 is easily tightened within the cavity 15 by means of convPntinn~l tools, such as wrench. Fig. 8 and 9 show a second modification ofthe chuck means having an upper portion _ade in the shape of plate 42 which is attached to the punch machine by means of screws (not shown) inserted into the corresponding openings 44 on said plate 42. Such arrangement allows to mount or hold a number 20 of punch-holders 10 aligned to each other.
The lower portion ofthe shank 24 is provided with a bore 32 for holding punch 48 by means of set screw (not shown) to be inserted within the corresponding opening 46. The punch-?~13fi?r 52 _ 8 holder further includes a spring holder 52, crown 54 and a spring 52. A tip 56 ofthe punch 48 isadapted to cooperate with a die means (not shown) to perform a pllnrhin~- process.
The crntrin~ operation ofthe punch 48 is done by first unscrewing set screws 58 and 60, 5 and then loosening the fastener 34 just until it is untightened. The punch can then be moved to the right by unscrewing the set screws 58 on the right and ti~ht~ning the set screws 58 on the left.
This method or the reverse is used for moving the punch right or left and front or back. Usually minor adiustmrnts can be made by proceeding with successive steps of one quarter turn for each screw. Fastener 34 and all screws must be tightened when the adjllstmrnt is co_pleted. The inspection for concentricit,v can be made visually. Thinner mqtrriql such as 0.012 " or 0.3mm require greater accuracy than thicker material, such as .018" + or 0.45~+.
The punch-holder according to the present invention in co_bination with the conventional punch apparatus is adaptable to be adjusted to perform any punch operation providing forming or deforming materials, such as joining, f~st~nin~, bl~nking, drawing, swaging, stamping and 15 mqrking The unique feature ofthe punch-holder according to the present invention allows easy fi~Pning of steel thicknesses as hght as 0.010" as well as st~inlrss steel with a strong lock.
The apparatus ofthe present invention allows to provide a variety oftoohng configurations and thus to mqmlf~cture di~lel-l-shaped products that may have hard to reach corners, narrow 20 flanges, high sides and other cl~ It is highly pfflr;ont in the air di~llilJulion industry for mqmlf~chlrin~ of ducts, elbows, and fittings.
The fioating punch-holder according to the present invention makes it possible to install `- 9 ~36?~52 .cimllltqneously one or more punches in aligned conli~ alion onto or within the ram ofthe machine, such as punch press with a mating die or dies on the bed or hom of said machine, thus eliminqfin~ the need of a die set or "C" frame and be perfectly aligned and centred with said mating die or dies.
Fig. 10 shows a prior art design, wherein the rounded-shaped head ofthe shank ismounted within a hexagonal-shaped two-piece chuck in which the lower part is performing the function of a fastener. In this arrangement it is necessary to use six a~justmPnt set screws to make qli~mPnt operation. However, those adjl.etmPnt screws may cause the head ofthe shank to be "o~' centre, thus resulting in mieqlignmP.nt To ti hten the system, the f-q-e~t~nPr is tumed, which 10 disturbs the adj--etm~t However when joining hght gauge mqtPriql, the adje,tmPnt must be very accurate to prevent damage.
This problem does not exist with the present co~L~;u,alion ofthe head (see Fig. 11). The improved square-shaped head with round comers leaves the shank immobile as the system is tightened by means of fastener 34 and locked by means of set screws 6Q
The foregoing discloses and describes exemplary embo~ ofthe present invention.
One skilled in the art will readily recognize from such lliec~e~ n and from the accompanying drawings, that various changes, moflifi.~?tit ns and vqri~ n~ may be made therein without departing from the spirit and scope of the invention as defined in the following claims.
SUMMARY OF THE lNVENTION
Broadly, the present invention is related to a floating punch-holder co~l~ing:
holding means adaptable to be attached to a plmc1lin~: apparatus;
shank means having upper portion and lower portion, the upper portion of said shank being held by said holding means;
punch means being connected to the lower portion of said shank means;
die means adapted to cooperate with said punch means;
wherein said holding means comprises a cavity adapted to accommodate and immobily lock the upper portion of said shank means, and wherein said upper portion having a configuration adapted to easily and accurately adjust said punch means in any position desired for ~ nmPnt and centrin~2;
15 with said die means while r~ ;;g in line as one or other . dj~ls~mPnt is made.
In another embo&ent, said holding means is incorporated within said punching apparatus, and said holding means comprise a chuck means adaptable to be attached to said punching apparatus. Said chuck means comprises an upper poItion and lower portion, said upper portion is adapted to be securely attached to said apparatus and said lower portion accommodates said cavity, and said chuck means having unitary co~ lion.
In yet another embo&ent, the upper portion of said shank means having a head or top portion, and wherein the ~limPn~ion~ of said upper portion in~ ling said head portion are smaller 4 ~35~62 than the ~limpneions of said cavity to provide a space necessary for successful adj~lstmPnt and movement of said shank means within said cavity;
said punch holder further comprises:
an ~lig~ .1 means adapted to cooperate with said head and provided to adjust and hold said 5 punch means in a set position, and fastener means adapted to securely lock said shank means within said cavity in immobile position without disturbing the adi~stmpnt of said punch means. Said cavity has subst~nti~lly cylindrical conli~ ion and said head portion having square-shaped configuration with rounded corners providing easy and wider adjllstmPnt of said shank means within said cavity, and said 10 ~li~mPnt means comprises a set of cris-cross screws located within said cavity, said screws allow to adjust said head portion in right-left or front-back positions during ~lignm~nt In still another embodiment, said f~etPnPr means comprises:
ti~htPnin3~l; means located within said cavity and locking means also located within said cavity.
15 Said tight~ning means comprises thread formed around an outer wall of said fastener means, said thread adapted to cooperate with the corresponding thread formed wlthin said cavity, and said locking means comprises a combination of an obtuse-angled groove formed around an outer wall of said f~et~ner means adapted to cooperate with a set of cris-cross screws located within said cavity, wherein said screws adapted to securely lock said fastener means by way of penetrating 20 into said groove, thus forcing said fastener means upwardly to lock immobily said shank means in place.
In still another embodiment, said groove comprises an upper edge and a lower edge, and ~ '' 5?52 wherein the upper edge of said groove is longer than the lower edge of said groove to facilitate succes.cfill locking of said fastener means by said cris-cross screws, and said groove is formed below said thread. The upper portion of said chuck means comprises a plate adapted to hold a number of said punch-holders aligned to each other, and said shank means having a T-shaped 5 configuration. The upper portion of said chuck means has a stub-like configuration.
In yet another embodiment, said floating punch-holder co~lise~.
holding means attached to said punching apparatus;
shank means having upper portion and lower portion, the upper portion of said shank being held by said holding means;
punch means being connected to the lower portion of said shank means;
die means adapted to cooperate with said punch means;
wherein said holding means comprises a cavity adapted to accommodate and immobily lock the upper portion of said shank means, and wherein said upper portion having a configuration adapted to easily and accurately adjust said punch means in any position desired for ali~.. ~l and centring 15 with said die means while re...-;..;..g in line as one or other adjlletm~nt is made.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 shows a side cross-section ofthe floating punch-holder according to the present invention.
Fig. 2 shows a side cross-section view of the first mollifi~ti. n of the chuck means taken along 20 the lines A-A of Fig.3.
Fig. 3 shows a bottom view of Fig. 2.
Fig. 4 shows a side view ofthe fastener means according to the present invention.
21~52~i2 _ 6 Fig. 5 is a bottom view of Fig. 4.
Fig. 6 shows a side view ofthe shank means according to the present invention.
Fig. 7 is a bottomview of Fig.6.
Fig. 8 shows a partial side cross-section ofthe punch-holder with a chuck means ofthe second 5 modification.
Fig. 9 is a top view of Fig. 8.
Fig. 10 shows a schematic plan cross-section view ofthe Prior Art .
Fig. 11 shows a schematic plan cross-section view of the assembly according to the present invention.
DETAILED DESCRIPTION OF THE PRESENT EMBODIMENTS
~ eferring now to drawings, Fig. 1 shows a floating punch-holder 10 comprising a chuck means 12 of unitary configuration having an upper portion 14 having in the first embodiment a shape of a stub provided for f~nin~ into a ram. The lower portion 16 ofthe chuck 12 having cavity 15 con~ictin~ of a lower cavity 20 and an upper cavity 22. Preferably the cavity 15 is of round or cylin(lri~l conl;guralion (see Fig. 2). Figures 6 and 7 show a shank means 24 comprising an upper portion or head 26 and a body 24 adapted to hold a punch 48 inserted into a bore 32 by means of a set screw (not shown) which is inserted into the corresponding opening 46. The head 26 of the shank 24 has a square-shaped configuration with the rounded comers, and is of smaller 20 (lim~.n~ion than the (limen~;~m ofthe upper portion 22 ofthe cavity 15.The shape ofthe head provides easy and wider adj~ mPnt of said shank 24 within the cavity 15 and also allows the shank 24 to be adjusted right-left or front-back during ~ nm~nt Said head 26 is aligned within _ 7 2l36?~;2 the upper portion 22 ofthe cavity 15 by ~lignmPnt means comprising a set of cris-cross screws 58 being inserted within the corresponding openings 18 formed in the lower portion 16 of chuck 15.
The punch-holder according to the present invention is further comprising a fastener means or collar 34 (see Figures 4 and 5) which is adapted to be fastened in to the cavity 15 ofthe chuck 12 5 by tightening means or thread portion 36 formed on the outer wall of said f~stPner 34. The fastener 34 is adapted to securely lock said shank means 24 within said cavity 15. The thread portion 36 in this case is cooperating with the corresponding thread formed around an inner wall ofthe lower portion 20 ofthe cavity 15. Below the thread portion 36 around the outer wall ofthe fastener 34 a groove 38 is for_ed having a configuration of an obtuse-angle. Preferably an upper 10 edge ofthe groove 38 is longer than a lower edge to facilitate sllcces.cfill locking of said fastener 34, wherein the groove is adapted to cooperate with a set of cris-cross screws 60 which are screwed into four corresponding openings 19 located at the lower portion 16 of chuck 12. This combination of groove 38 and set of cris-crossed screws 60 comprises a locking means, wherein said screws are adapted to penetrate into said groove 38 thus forcing said fastener 34 upwardly to lock immobily the shank 24 within the cavity 15. The lower portion 40 of the fastener 34 is easily tightened within the cavity 15 by means of convPntinn~l tools, such as wrench. Fig. 8 and 9 show a second modification ofthe chuck means having an upper portion _ade in the shape of plate 42 which is attached to the punch machine by means of screws (not shown) inserted into the corresponding openings 44 on said plate 42. Such arrangement allows to mount or hold a number 20 of punch-holders 10 aligned to each other.
The lower portion ofthe shank 24 is provided with a bore 32 for holding punch 48 by means of set screw (not shown) to be inserted within the corresponding opening 46. The punch-?~13fi?r 52 _ 8 holder further includes a spring holder 52, crown 54 and a spring 52. A tip 56 ofthe punch 48 isadapted to cooperate with a die means (not shown) to perform a pllnrhin~- process.
The crntrin~ operation ofthe punch 48 is done by first unscrewing set screws 58 and 60, 5 and then loosening the fastener 34 just until it is untightened. The punch can then be moved to the right by unscrewing the set screws 58 on the right and ti~ht~ning the set screws 58 on the left.
This method or the reverse is used for moving the punch right or left and front or back. Usually minor adiustmrnts can be made by proceeding with successive steps of one quarter turn for each screw. Fastener 34 and all screws must be tightened when the adjllstmrnt is co_pleted. The inspection for concentricit,v can be made visually. Thinner mqtrriql such as 0.012 " or 0.3mm require greater accuracy than thicker material, such as .018" + or 0.45~+.
The punch-holder according to the present invention in co_bination with the conventional punch apparatus is adaptable to be adjusted to perform any punch operation providing forming or deforming materials, such as joining, f~st~nin~, bl~nking, drawing, swaging, stamping and 15 mqrking The unique feature ofthe punch-holder according to the present invention allows easy fi~Pning of steel thicknesses as hght as 0.010" as well as st~inlrss steel with a strong lock.
The apparatus ofthe present invention allows to provide a variety oftoohng configurations and thus to mqmlf~cture di~lel-l-shaped products that may have hard to reach corners, narrow 20 flanges, high sides and other cl~ It is highly pfflr;ont in the air di~llilJulion industry for mqmlf~chlrin~ of ducts, elbows, and fittings.
The fioating punch-holder according to the present invention makes it possible to install `- 9 ~36?~52 .cimllltqneously one or more punches in aligned conli~ alion onto or within the ram ofthe machine, such as punch press with a mating die or dies on the bed or hom of said machine, thus eliminqfin~ the need of a die set or "C" frame and be perfectly aligned and centred with said mating die or dies.
Fig. 10 shows a prior art design, wherein the rounded-shaped head ofthe shank ismounted within a hexagonal-shaped two-piece chuck in which the lower part is performing the function of a fastener. In this arrangement it is necessary to use six a~justmPnt set screws to make qli~mPnt operation. However, those adjl.etmPnt screws may cause the head ofthe shank to be "o~' centre, thus resulting in mieqlignmP.nt To ti hten the system, the f-q-e~t~nPr is tumed, which 10 disturbs the adj--etm~t However when joining hght gauge mqtPriql, the adje,tmPnt must be very accurate to prevent damage.
This problem does not exist with the present co~L~;u,alion ofthe head (see Fig. 11). The improved square-shaped head with round comers leaves the shank immobile as the system is tightened by means of fastener 34 and locked by means of set screws 6Q
The foregoing discloses and describes exemplary embo~ ofthe present invention.
One skilled in the art will readily recognize from such lliec~e~ n and from the accompanying drawings, that various changes, moflifi.~?tit ns and vqri~ n~ may be made therein without departing from the spirit and scope of the invention as defined in the following claims.
Claims (33)
1. Floating punch-holder comprising:
holding means adaptable to be attached to a punching apparatus;
shank means having upper portion and lower portion, the upper portion of said shank being held by said holding means;
punch means being connected to the lower portion of said shank means;
die means adapted to cooperate with said punch means;
wherein said holding means comprises a cavity adapted to accommodate and immobily lock the upper portion of said shank means, and wherein said upper portion having a configuration adapted to easily and accurately adjust said punch means in any position desired for alignment and centring with said die means while remaining in line as one or other adjustment is made.
holding means adaptable to be attached to a punching apparatus;
shank means having upper portion and lower portion, the upper portion of said shank being held by said holding means;
punch means being connected to the lower portion of said shank means;
die means adapted to cooperate with said punch means;
wherein said holding means comprises a cavity adapted to accommodate and immobily lock the upper portion of said shank means, and wherein said upper portion having a configuration adapted to easily and accurately adjust said punch means in any position desired for alignment and centring with said die means while remaining in line as one or other adjustment is made.
2. Floating punch-holder according to claim 1, wherein said holding means is incorporated within said punching apparatus.
3. Floating punch-holder according to claim 1, wherein said holding means comprises a chuck means adaptable to be attached to said punching apparatus.
4. Floating punch-holder according to claim 3, wherein said chuck means comprises an upper portion and lower portion, said upper portion is adapted to be securely attached to said apparatus and said lower portion accommodates said cavity.
5. Floating punch-holder according to claim 3, wherein said chuck means having unitary configuration.
6. Floating punch-holder according to claim 3, wherein, the upper portion of said shank means having a head or top portion, and wherein the dimensions of said upper portion including said head portion are smaller than the dimensions of said cavity to provide a space necessary for successful adjustment and movement of said shank means within said cavity;
said punch holder further comprises:
an alignment means adapted to cooperate with said head and provided to adjust and hold said punch means in a set position, and fastener means adapted to securely lock said shank means within said cavity in immobile position without disturbing the adjustment of said punch means.
said punch holder further comprises:
an alignment means adapted to cooperate with said head and provided to adjust and hold said punch means in a set position, and fastener means adapted to securely lock said shank means within said cavity in immobile position without disturbing the adjustment of said punch means.
7. Floating punch-holder according to claim 6, wherein said cavity having substantially cylindrical configuration and said head portion having square-shaped configuration with rounded corners providing easy and wider adjustment of said shank means within said cavity.
8. Floating punch-holder according to claim 6, wherein said alignment means comprises a set of cris-cross screws located within said cavity, said screws allow to adjust said head portion in right-left or front-back positions during alignment.
9. Floating punch-holder according to claim 6, wherein said fastener means comprises:
tightening means located within said cavity and locking means also located within said cavity.
tightening means located within said cavity and locking means also located within said cavity.
10. Floating punch holder according to claim 9, wherein said tightening means comprises thread formed around an outer wall of said fastener means, said thread adapted to cooperate with the corresponding thread formed within said cavity.
11. Floating punch-holder according to claim 9, wherein said locking means comprises a combination of an obtuse-angled groove formed around an outer wall of said fastener means adapted to cooperate with a set of cris-cross screws located within said cavity, wherein said screws adapted to securely lock said fastener means by way of penetrating into said groove, thus forcing said fastener means upwardly to lock immobily said shank means in place.
12. Floating punch-holder according to claim 11, wherein said groove comprises an upper edge and a lower edge, and wherein the upper edge of said groove is longer than the lower edge of said groove to facilitate successful locking of said fastener means by said cris-cross screws.
13. Floating punch-holder according to claim 11, wherein said groove is formed below said thread.
14. Floating punch-holder according to claim 4, wherein the upper portion of said chuck means comprises a plate adapted to hold a number of said punch-holders aligned to each other.
15. Floating punch-holder according to claim 1, wherein said shank means having a T-shaped configuration.
16. Floating punch-holder according to claim 4, wherein the upper portion of said chuck means having a stub-like configuration.
17. Floating punch-holder in combination with a punching apparatus, said floating punch-holder comprising:
holding means attached to said punching apparatus;
shank means having upper portion and lower portion, the upper portion of said shank being held by said holding means;
punch means being connected to the lower portion of said shank means;
die means adapted to cooperate with said punch means;
wherein said holding means comprises a cavity adapted to accommodate and immobily lock the upper portion of said shank means, and wherein said upper portion having a configuration adapted to easily and accurately adjust said punch means in any position desired for alignment and centring with said die means while remaining in line as one or other adjustment is made.
holding means attached to said punching apparatus;
shank means having upper portion and lower portion, the upper portion of said shank being held by said holding means;
punch means being connected to the lower portion of said shank means;
die means adapted to cooperate with said punch means;
wherein said holding means comprises a cavity adapted to accommodate and immobily lock the upper portion of said shank means, and wherein said upper portion having a configuration adapted to easily and accurately adjust said punch means in any position desired for alignment and centring with said die means while remaining in line as one or other adjustment is made.
18. Floating punch-holder according to claim 17, wherein said holding means is incorporated within said punching apparatus.
19. Floating punch-holder according to claim 17, wherein said holding means comprises a chuck means adaptable to be attached to said punching apparatus.
20. Floating punch-holder according to claim 19, wherein said chuck means comprises an upper portion and lower portion, said upper portion is adapted to be securely attached to said apparatus and said lower portion accommodates said cavity.
21. Floating punch-holder according to claim 19, wherein said chuck means having unitary configuration.
22. Floating punch-holder according to claim 19, wherein the upper portion of said shank means having a head or top portion, and wherein the dimensions of said upper portion including said head portion are smaller than the dimensions of said cavity to provide a space necessary for successful adjustment and movement of said shank means within said cavity;
said punch holder further comprises:
an alignment means adapted to cooperate with said head and provided to adjust and hold said punch means in a set position, and fastener means adapted to securely lock said shank means within said cavity in immobile position without disturbing the adjustment of said punch means.
said punch holder further comprises:
an alignment means adapted to cooperate with said head and provided to adjust and hold said punch means in a set position, and fastener means adapted to securely lock said shank means within said cavity in immobile position without disturbing the adjustment of said punch means.
23. Floating punch-holder according to claim 22, wherein said cavity having substantially cylindrical configuration and said head portion having square-shaped configuration with rounded corners providing easy and wider adjustment of said shank means within said cavity..
24. Floating punch-holder according to claim 22, wherein said alignment means comprises a set of cris-cross screws located within said cavity, said screws allow to adjust said head portion in right-left or front-back positions during alignment.
25. Floating punch-holder according to claim 22, wherein said fastener means comprises:
tightening means located within said cavity and locking means also located within said cavity.
tightening means located within said cavity and locking means also located within said cavity.
26. Floating punch holder according to claim 25, wherein said tightening means comprises thread formed around an outer wall of said fastener means, said thread adapted to cooperate with the corresponding thread formed within said cavity.
27. Floating punch-holder according to claim 25, wherein said locking means comprises a combination of an obtuse-angled groove formed around an outer wall of said fastener means, said groove is adapted to cooperate with a set of cris-cross screws located within said cavity, wherein said screws adapted to securely lock said fastener means by way of penetrating into said groove, thus forcing said fastener means upwardly to lock immobily said shank means in place.
28. Floating punch-holder according to claim 27, wherein said groove comprising an upper edge and a lower edge, and wherein the upper edge of said groove is longer than the lower edge to facilitate successful locking of said fastener means by said cris-cross screws.
29. Floating punch-holder according to claim 27, wherein said groove is formed below said thread.
30. Floating punch-holder according to claim 19, wherein the upper portion of said chuck means comprises a plate adapted to hold a number of said punch-holders aligned to each other.
31. Floating punch-holder according to claim 17, wherein said shank means having a T-shaped configuration.
32. Floating punch-holder according to claim 19, wherein the upper portion of said chuck means having a stub-like configuration.
33. Floating punch-holder according to claim 17, wherein said holder in combination with said apparatus are adaptable to be adjusted to perform any punching operations providing forming or deforming materials, such as: joining, fastening, blanking, drawing, swaging, stamping and marking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002136262A CA2136262A1 (en) | 1994-11-21 | 1994-11-21 | Floating punch-holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002136262A CA2136262A1 (en) | 1994-11-21 | 1994-11-21 | Floating punch-holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2136262A1 true CA2136262A1 (en) | 1996-05-22 |
Family
ID=4154707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002136262A Abandoned CA2136262A1 (en) | 1994-11-21 | 1994-11-21 | Floating punch-holder |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2136262A1 (en) |
-
1994
- 1994-11-21 CA CA002136262A patent/CA2136262A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued | ||
| FZDE | Discontinued |
Effective date: 20041122 |