JPS6054232A - Tool system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tool system for flaring metal tubing, and more particularly to a tool system for advancing a tie toward a workpiece by rotating a threaded shaft. Regarding the portable flaring tool system, the portable flaring tool is made of relatively soft materials, e.g.
It is commonly used to draw, flare, and lengthen tubing made of copper and having a diameter in the range of 4.76wn - 15.87vm. One example of such a tool is disclosed in U.S. Pat. A pair of elongated payloads defining holes in the block include a generally U-shaped yoke attached to the block, and a threaded shaft attached to the yoke. The opposite threaded shaft supports the tie. A screwed collar is rotatably attached to this screwed shaft, and this collar is concentric with a cylindrical thrust element having a base shaped like a circle φ1#. The die has a slanted bottom portion dimensioned to receive the thrust element and a threaded top portion that threads into the collar.

These trailing bars are secured together by wing nuts in order to pack tubular workpieces in their ml, and this shaft is rotated to displace the ties towards the workpieces. This die (d) typically includes a short pilot section dimensioned to fit into the open end of the workpiece and swages or otherwise enlarges the end of the workpiece. As the shaft continues to rotate, the tie is forced into the end of the workpiece where the bead enlarges the inner diameter of the end of the workpiece.

After the swaging operation is performed, the shaft is rotated in the opposite direction, thereby withdrawing the end of the die from the workpiece. Because this die enlarges the internal diameter of the workpiece, the inherent elasticity of the wall material often causes the wall to grip the tie, thereby preventing removal from the end of the workpiece - however, the tie is attached to the shaft. Due to the threaded twist, the die is able to resist the tension that occurs when it is removed from the workpiece and thus remains fixed to the shaft. This type of device suffers from several disadvantages. have.

For example, removing a tie from the end of a shaft and replacing it with a different die can be somewhat tedious and time consuming. This is because these ties must be continuously unscrewed from the collar and must be continuously screwed into the collar.

Providing gradient rotation between the tie and collar is made more difficult due to the tension and compression forces imparted to the threaded joint during the swaging and removal operations. If the joint between the die and the shaft does not allow relative rotation, the swage effect (difficulty of rotating the screwed shaft by hand) increases significantly.

This is because the die must rotate relative to the fixed workpiece.

Another drawback is that threaded joints can limit the useful life of the swaging tool. If the threads on either the die or the shaft become worn or otherwise deformed after extended use, the shaft or die becomes useless. Furthermore, foreign matter, ie, dust, metal chips, rust, etc., can prevent successful screwing or unscrewing of the die and collar.

Another type of manual flaring tool is disclosed in U.S. Pat.
No. 5,036. This flaring tool is of the type having a pair of clamping members biased together by an over-center lever arrangement and adjustably mounted within a planar body. A strap is positioned over the clamping member by means of a pair of posts and supports a threaded shaft attaching the die to the lower end. The strap is pivoted to one of these posts and is placed in a fixed R position in a predetermined register with the shaft and die or tubular workpiece held by these clamping members. It is now possible to swing it.

In one embodiment, a tubular recess is disposed remote from the lower end of the threaded shaft, and the tubular recess has a flexible tubular washer thereon having an outer diameter greater than the outer diameter of the shaft. keeping. The die includes on its upper surface a lumen dimensioned to receive the washer and the shaft, and a tubular rift that partially closes the lumen of and. The die is attached to the lower end of the shaft by an interference fit in which the washer is retained within the bore by a t'-shaped rib.

This interference fit provides a bond between the shaft and tie that allows for relatively quick replacement of the tie, but provides a relatively low resistance to tension in this connection. If the die sticks to the tubular workpiece during swaging, even if you rotate the shaft in the opposite direction to remove the tie from the workpiece, the shaft will move away from the die and become embedded in the die or the end of the workpiece. No. 2,595,036 also discloses an apparatus for double flaring metallic tubing. The device consists of a plate with a plurality of tubular concave working surfaces of different diameters, each concentric with a cylindrical guide. This plate is arranged to be inserted into the end of the tubular workpiece held in the guide or clamping member, and on the opposite side of the plate a ram is arranged. The ram is held in register by a flange that engages a post on the tool body.

Hitting this ram with a hammer drives the end of the tube against the tubular concave working surface, thereby collapsing the end of the tube in its longitudinal dimension to form a tubular rib. This tubular rib is further collapsed to form a double flared end by a conical die attached to the threaded shaft in the above condition.

One drawback of this type of apparatus for forming double flared ends is that two separate tools are required. namely a flaring tool and a plate with multiple working surfaces for carrying out the first stage of the dual flaring process. A second drawback is that the guides often stick to the ends of the tubular workpiece, requiring manual removal, a process that consumes the user's time and effort. .

Therefore, portable swaging or flaring is possible where the tie can be screwed onto the shaft by a joint that provides relative rotation between the tie and the shaft to reduce the effort required to rotate the shaft and drive the tie into the workpiece. A forming tool system is also required, with a die-to-shaft interface that facilitates rapid die replacement and that resists tension sufficient to rotate the shaft and pull the tie from the end of the workpiece. Has become a mobile flare formation,
A stretching or sizing tooling system will be required. Furthermore, such tooling system should be capable of swaging soft non-copper abrasive materials and should perform a double flaring process with minimal time and effort. A portable tool system is provided in which a given die is attached to a threaded shaft by a joint that facilitates quick replacement. Furthermore, the die and threaded shaft can have relatively loose tolerances and still be able to function aggressively, thereby reducing their manufacturing costs. The present invention provides a joint that allows relative rotation of the tie and shaft to reduce the effort required to rotate the shaft, yet resists tension sufficiently to cause the shaft to rotate in reverse and pull the tie from the workpiece. to the die and shaft.

The present invention provides a pair of clamping members for gripping a workpiece therebetween, a strap part disposed apart from the clamping member, and a strap disposed so as to be displaced in the direction of and away from the clamping member. A type having a shaft screwed into the member and a tie having a working surface for forming a workpiece which is attached to this screwed shaft and which is gripped by the clamping member when the shaft is displaced in the direction of the feeding member. tool system. The threaded shaft includes a die support end that includes a circumferential groove formed in and adjacent the head. The head portion of the shaft is generally cylindrical in shape and includes a substantially flat bearing link surface opposing the clamping member. This tie (r'1) includes a recess having a substantially flat mating bear link surface which, when attached to the tie or shaft,
The bearing surface is oriented against the head to engage and transmit compressive forces from the shaft through the tie to the workpiece held by the clamping member. When this threaded shaft is rotated, the bear link surface of the head portion rotates relative to the bear link surface of the concave DI of the tie, so that relative rotation between the die and the shaft is possible.

In a preferred embodiment, the die includes a laterally opening recess dimensioned to receive the head portion therein and is positioned opposite the working surface and for slidably receiving the circumferential groove of the threaded shaft. It includes a pair of holes forming a slot between them. The die is retained on the die supporting end of the shaft by engagement between the head and the shoulder of the transverse recess.

The advantage of this side-opening recess is that the shaft can be pushed back from the clamping member sufficiently to allow the end of the shaft to be inserted into the end of the die opposite its working surface, i.e. by a distance greater than the length of the die. The die can be attached to the end of the shaft without any problems. Alternatively, at 9, the shaft may be returned far enough from the clamping member that the end of the shaft enters the side-opening recess, ie a distance less than the length of the tie. This is especially important when using long tube expansion dies.

This preferred embodiment also includes: A detent includes a spring detent ball retained in the bearing surface of the head of the shaft and a detent hole formed in the bearing surface of the die recess. The detent balls and detent holes are positioned relative to their respective bearing surfaces so as to be in register when properly positioned in the head of the die or shaft.

Because substantially all of the forces applied to the die-shaft joint extend through the central axes of these members, it is necessary to prevent radial movement relative to the die or shaft. It is not necessary to use additional fixing means.

Therefore, the concave bottle can be kept open at all times during the process. When the tool is not in use, the force between the detent ball and the detent is sufficient to retain the tie on the shaft.

According to another embodiment of the invention, the head portion of the shaft comprises:
It is retained within the die recess by a slotted cap rotatably mounted on the top of the die. When this cap rotates, the following considerations are taken into account. That is, the slot is in register with the slot of the die so that the head portion is disposed within the recess. When the slot is rotated out of register with the slot in the die recess, the head is captured within the recess. In this embodiment, the above-mentioned detent is not necessary.

According to another embodiment of the invention, the die is modified in such a way that the recess of the die does not have a lateral opening, but a straight bore in the top part of the die body. A cam spring is rotatably mounted on the cylindrical side wall of the die, and the cam spring includes six points extending away from the surface of the body. The spring passes through a pin that is slidably housed within the die body and is oriented to engage a groove on the shaft. Rotation of the cam spring causes the pin to engage the groove, thereby retaining the die or the shaft, or disengage the pin from engagement with the groove, thereby allowing the die to be removed from the shaft. .

The tool system of the present invention also includes a gauge to facilitate the dual flaring process.

The gauge includes a plurality of increments formed on its longitudinal edges and extending upwardly from the jaws of the clamping member toward the die to indicate the correct length of tubing to effect the correct double flaring stroke. Preferably, the bar has a notch. Each notch corresponds to a different diameter tube. The gauge may also take the form of a tubular notch formed in the outer surface of the die.

To ensure correct swaging with predictable and reproducible results, the die of the tooling system of the present invention performs a diameter enlargement process on the tube so that the length of the enlarged tube is free from leak-tight solder. A stop member is included which is disposed a predetermined distance from the swaging or expanding surface of the die to optimize the formation of the joint.

An advantage of the present invention over prior art devices, i.e. devices that are screwed into a die or shaft, is that the attachment means provide a greater clearance between the mating parts than is allowed between the retaining screws. These features allow the present invention to have greater tolerances to dust and wear, and are less costly to manufacture. An advantage is that the construction of the swaging die working surface is not limited to swaging only copper tubing in a soft state. Hard copper pipe material,
For example, L-type copper and M-type copper tube materials can be swaged as desired.

The tool system of the present invention also includes a die that facilitates the rapid formation of double flared ends on metallic cylindrical workpieces. The die has a generally cylindrical pilot portion extending outwardly from its working surface. The die also has a generally concave tubular portion concentric with the pilot portion. To perform the double flaring process, the die described above is mounted on a shaft and advanced to the end of a cylindrical workpiece. The ends of the workpiece are crushed by a die and bent longitudinally by a tubular section, thereby forming tubular ribs. This double flared die is attached to the shaft by a joint, thus facilitating its attachment and easy removal from the end of the workpiece.

This process is completed by removing the die, attaching a tie with a conical working surface to the shaft, and bending the end member of the cylindrical section inward to form a flared end. Complete.

Therefore, an object of the present invention is to provide a tool system as follows. That is, it is a portable swaging tool system in which a swaging die is attached to the shaft by a joint that facilitates relative rotation between the tie and the shaft, and the joint between the die and the shaft is connected to the workpiece of the tie. 4.6, a tooling system that is sufficiently strong to withstand the tension applied during removal of the For materials including copper tubing,
A tooling system that performs sheep-flaring and dual-flaring, swaging, and sizing processes in a fast, accurate, and reproducible manner.

As shown in FIGS. 1 and 2, the tool system according to the present invention includes a main body, generally designated 10, and a tie body, designated generally as 12, as a swaging die. Contains.

The main body 10 is generally channel-shaped and encloses a pair of complementary fastening members 14,16. The clamping members 14, 16 each have a threaded semi-cylindrical cutout 2 with different diameters corresponding to the standard external shape of the metal tubing.
It includes a plurality of clamping surfaces 18 including zero.

The clamping member 14 is rotatably attached to the main body 10 by a rod 22. The rod 22 is the main body.
It is screwed into the post 24 and extends integrally with the post 24. The post 24 extends outward from the main body. The tightening member 6 is rotatably attached to the rod 26, and the rod 26 passes through a yoke 28 that is slidably mounted in the main body 10. It extends integrally with a post 30 extending from the main body in parallel with the main body. Both of these single weight lots 22,24 provide increased strength and stiffness when compared to similar conventional devices having posts that are assemblies of separate parts.

The sliding movement of this yoke is such that the yoke can be displaced towards or away from the clamping member 14.
It is defined by engagement with a guide slot 32 formed therein. A lever 34 is pivotally mounted on the main body 10 by an adjusting screw 36 having an eccentric shank 37.
, this lever 34 engages the end of the yoke 28 so that this lever drives the yoke and clamping member 16 toward the feed section 14 as it moves toward the handle section 40 of the main boat. It includes a roller 38 at one inner end thereof which acts as a cam.

A strap 42 is pivotally mounted to the upper end of the post 30 and is held by a seat nut 44, and the strap 42 has a hook 46 that engages the upper neck of the post 24.
at one opposing end. A spring washer 48 is disposed in the lower extension 43 of the strap 42 and urges the strap upwardly against the nut 44. Such a sprinkling action prevents the strap 42 from freely pivoting about the extension 43. However, the strap 42 is
When the feed section 16 is withdrawn from the feed member 14, it pivots about the extension 43 to a position 42', as shown in FIG. 14, thereby facilitating die replacement.

Strap 42 includes a central post 52 that receives a threaded shaft 54 therebetween. The strap has a shaft in register and coaxial relationship with the lumen 56 formed by the complementary notch 20 of the fastening member 14.16 when the strap is secured to the post 24.3o. It is arranged in a lively manner. The top of shaft 54 includes a nozzle 57 that slidably receives a handle 58 to facilitate rotation of the shaft by the user.

As best seen in FIG. 17, this housing 57 includes a spring-loaded return seat 59 disposed in a recess 60 extending inwardly from a hole 61 for receiving a handle 58.
and each end of the handle includes a necked frustoconical portion 62 and an inwardly facing stop member 63. Handle 58 is inserted into hole 61 such that detent 59 engages the rear side of handle 58 . hole 61
If you try to remove the handle 58 from the
comes into contact with the stop member 63, so the handle and shaft 5
4. Misunderstanding of assembly is prevented. Circle button.

Because the platform 62 is gradually sloped, the return stop 59 is displaced downwardly away from the handle during normal movement of the handle in and out. Furthermore, it is held in the desired release position by a return stop 59 which is pressed against the contour of the handle 58.

As can be clearly seen from FIGS. 1 and 3, the shaft 54
The lower portion of the die support end 64 includes a generally cylindrical head 65 and a circumferential groove 66 disposed adjacent the head.

This head portion 65 terminates in a bearing surface 68 that is substantially planar and oriented perpendicular to the longitudinal axis of the shaft. The bearing surface 68 includes a spring-loaded detent pawl 70 that is disposed concentrically with respect to the central axis of the shaft 54.

As shown in the fourth screen and FIG.
2 includes a sizing surface 72 which, in this embodiment, is connected to a generally circular pilot portion 74 and to a swage concentric with the pilot portion. It includes one machined circular rust part 76. It should be noted that the tool system according to the invention preferably includes a number of such dies 12, each dimensioned to engage a tubular workpiece having a different diameter. .

An annular stop wall 77 is vertically disposed on the sizing surface 72 and swages when it abuts the enlarged end of a tubular workpiece that has passed through the sizing surface 72. The process is automatically stopped. This stop wall 7
7 is spaced a predetermined distance from the truncated cone 76 to form an enlarged end of the workpiece having an optimum length to form a sink-free solder joint. This distance 11iffl varies with the diameter of the tube to be swaged.

The long pilot portion 74 of tie 12 serves a dual function. In other words, the pilot part 74 not only facilitates the placement of the tie on the tubular workpiece, but also functions as a kite for the moving round piece part 76 of the die 12 during swaging processing. 1) The properties of the enlarged end are improved.

The body 78 of the die 12 has the head portion 6 of the shaft therein.
5 (see FIG. 1). This recess includes monolead shoulders 82,84 on a face 86 opposite face 72, these shoulders forming a slot 88 therebetween for receiving the annular groove 66 of the shaft. . This recess 80 is filled with debris 82.84
a concentrically disposed detent hole 92 including a substantially flat bearing surface 90 opposing the detent pawl 70 (FIG. 3) of the shaft 54; have.

In general, the swaging process of the present tool begins with the swaging die 12 being inserted onto the shaft 54 of the pod 10. The tie 12 is positioned so that the recess Dr 80 is adjacent to and opposed to the head 65 of the shaft 54, and the tie 12 is also laterally displaced until the head is placed within the recess. When the detent ball 70 is inserted into the detent hole 92, the tie 12 is attached to the shaft 54.
The lever 34, which is prevented from slipping out of its predetermined position, pivots away from the bolt 40 of the tenon 10, thereby tightening the clamping part 16. It can be displaced away from the clamping member 14. The end of the tubular workpiece 94 (the first figure is disposed between opposing complementary notches 200 of the clamping member 14.16, so that the end of the workpiece 94 engages the truncated cone 76). When the lever 34 pivots toward the handle, the swaging member 1
4.16 is fixedly engaged to the tubular workpiece.

While holding lever 34 and handle 40 together in one hand, the user grasps handle 58 with the other hand and rotates shaft 54 to move die 12 toward workpiece 94. Once the truncated cone 76 enters the end of the workpiece, the tubular workpiece 9
The end of 4 is enlarged.

Further displacement of the truncated cone 76 causes the workpiece 94 to expand at the point where the end of the workpiece abuts the stop wall 77 . During this period of displacement, the sizing iki 72 causes the tubular workpiece 94 to
The inner diameter of is sized correctly. The reason why the die 12 can swage the hard copper tube material is due to this circle ψ['', which is the combination of the tie portion 76 and the sizing portion 72.

Once the enlargement step is complete, the user removes the die 12 from the end of the workpiece 94 by reversing the rotation of the shaft. The lever 34 is then rotated away from the nondle portion 40, allowing the user to separate the clamping members 14,16 and remove the finished workpiece 94 therefrom.

As shown in FIGS. 6 and 8g7, a tool according to the invention employs a double flare-forming die 12A with working surfaces 72A, 72B having different shapes, and a single flare-forming die 12B. A flaring process can be performed. Blood 72A of tie 12A includes a substantially cylindrical pilot portion 74A extending therefrom and an annular quadrant 96 concentric with the pilot portion. The single flaring gouer 12B has a conical working surface 72B and is equally useful for performing single flaring and square flaring.

As shown in Figure 6, to begin the double flaring process, the tubular workpiece 94A is clamped between the clamping members 14, 16 in the manner previously described. Determine the length of workpiece 94A projecting above clamping member 14.16 by using a cage similar to the gauge disclosed in U.S. Pat. No. 2,595,036. However, the tool system preferably includes a package 97 shown in FIG. 19 having a counting notch 98. Each notch 98 has a depth corresponding to the appropriate length if a workpiece of a given diameter projects above the clamping member 14.16. In the example, each die 12C of the tooling system used to perform the dual flaring process has an annular notch extending to a depth corresponding to the appropriate amount of overhang into the sized tubing to be flared by the tie. Shaped by 98C.

Kui 12A or 12C is attached to shaft 54 and advanced toward workpiece 94A until the end of the workpiece engages annulus 96. As the hook 12A continues to be displaced downward, the end portion of the workpiece 94A is crushed downward and in the vertical dimension, thereby forming a lobed rib 99.

The next step in the double flaring process is shown in FIG. Die 12A is removed from shaft 54 and die 12A is removed from shaft 54.
2B is installed in its place.

Shaft 54 moves downwardly until conical swage surface 72B abuts the collapsed end of workpiece 94A.

As the die 12B continues to move downward, the already crushed ends fold themselves over each other, causing the double flared end 1
00 is formed.

Preferably, the tooling system of the present invention includes a tie 12D, shown in FIG. 16, for forming a single 180° flare. For die 12D, swage surface 72D is a flat annular surface oriented substantially perpendicular to the longitudinal axis of the die, and swage surface 72D includes pilot portion 74D. To form such a 180° flared end, a tubular workpiece 94E is first installed between the delivery members 14.16 (FIG. 15), which
2 are made so that they protrude above these pay members 14,16. First, this end portion is flared by a die 12F having a trapezoidal swage processing surface 72E with an included angle of 90°. The die 12D (FIG. 16) is then taken on the shaft 54 (=1 cut and this flat swage machining 'ji 721) ends 1026-, :,1
The 80° flare is pressed in the 1L direction with a Y-flare. Die 12El-i, 90° bowl 1 lower angle, e.g. 7
It may be formed with an included angle of 4°, which makes it effective to perform a single flaring to perform the first stage of such a flaring process. .

Another embodiment of a tool system according to the invention is shown in FIGS. 8-10. In this embodiment, the return correcting ball 70 and the detent hole 92 (FIGS. 3 and 4) are omitted, and the head portion 65 is secured within the recess 79r80F by the cap 104. Cap 104 includes an m section i, rn 1.06 including a radially extending slot 110 and an annular sidewall 108 . The lower edge of the sidewall 108 includes an inwardly extending rim 112, which has a rim 112Q.
Annular is formed on F body 78F: 11
The cap 104, which is sized and arranged to mate with the cap 104, is preferably made of a strong plastic material with sufficient flexibility.

This is so that the cap snaps onto the top of body 78F and is held thereon by engagement of rim 112 and groove 114.

However, the fit should be sufficiently loose.

This is to allow the cap 104 to rotate relative to the die 12F.

In order to attach the die 12F” to the shaft 54, the eighth
As shown, cap 104 is first rotated so that slot 110 is in register with slot 88F of tie 12. In this way, the head portion 65 of the shaft 54 can be inserted into the recess 80F from the side. In order to fix the shaft 54 in the recess J'li 80 F, the slot 1 is then inserted as shown in No. 101 No. 1.
The cap 104 is rotated so that the die 10 is in a position out of register with the slot 88F' of the die 12F.

The dimensions of the rounded ends of slot 110 and slot 88F are as follows:
4 are rotated, their intersecting portions are sized to form a circular open cavity corresponding to the surface diameter of the groove 660 separating the head portion 65 from the dead portion of the shaft 54. ing. Thus, the shaft 54 is connected to the die 12.
It can rotate freely relative to F, and the downward thrust of the shaft 54 can be transmitted from the bearing surface 68 of the head portion 65 to the bear link 190F of the tie 12F'. Connect tie 12F from shaft 54 to jfP
To remove the culm, the cap 104 is rotated so that it is aligned again with the slot 110 or the slot 88F, and the die is then removed from the head 65 of the shaft by the ear υ9. Another 11 examples of Invention V (Research) are shown in Figures 4.11 to 13.
11t1 match, Thailand 12G is formed as follows.

Elf, in order to prevent the body 78G from having a lateral opening, the recess 80G accommodates the shape of a straight bore.
The cam spring 118 is substantially circular in shape and accommodates a cam spring 118 including an outwardly protruding convex portion 120, so that the cam spring 118 is rotated relative to the body 78G. It is disposed within the groove 116 for this purpose. In the radially oriented hole 124 disposed in the pod 78G of the die 12G at the height of the groove 66 formed in the end of the shaft 54 when the shaft is inserted into the recess Pjr80G Fixed pin 122
is slidably arranged. The outer end of pin 122 includes a hole 126 through which cam spring 118 is slidably inserted.

In order to attach the tie 12G to the shaft 54, the 12th
Cam spring 118 is rotated to cause protrusion 120 to pass through hole 126 in pin 122, as shown.

The pin 122 is displaced outwardly relative to the hole 124. This pin 122rrJ, cam spring 1.18
is dimensioned so that it is completely displaced from the recess 80G when it is rotated to the position shown in FIG. In this way, the head portion 65 of the shaft 54 can be inserted into the recess 80G - to secure the head portion 65 in the recess 80G (bow, the cam spring 118 is rotated to the position shown in FIG. 13). When it comes to this position, cam spring 1
18 urges the pin 122 into the hole 124 such that its radially inner end pushes the head 65 into the shaft 5.
It enters a groove 66 that is separated from the remaining portion of No. 4. In such a case, the head portion 65 cannot be removed from the concave DI80G.

According to all of the ties 12.12A to 12G described above, the compressive force transmitted from the shaft 54 to the workpiece 94 through the tie IF++ is transferred to the bear link surface 68 of the head portion 65.
to the bearing surface 90G within the recess 80. Rotating the shaft causes the bearing link surface 68 to rotate relative to the bearing surface 90 so that rotational motion is not transferred to the tie 12 itself, thereby reducing the effort required to rotate the shaft. . The action of removing the die 12 from the end of the workpiece 94 is effected by the head 65 and shoulders 82,84.
Or it is facilitated by engagement with pin 122.

It should be noted that each of these shoulders and pins has sufficient strength to withstand the tension that would cause the die to separate from the shaft 54 during removal of the die. Although described as being implemented in a similar manner, it should be understood that tubing made of other materials, such as aluminum and mild steel, are equally unnecessary. Therefore, it should be understood that the reference to metallic tubing material is merely an example and does not limit the scope of the present invention. Similarly, while the first type of device described herein constitutes a preferred embodiment of the invention, the invention is limited to these detailed forms of the device. It is to be understood that variations may be made without departing from the scope of the invention.

[Brief explanation of the drawing]

FIG. 1 is a side view of the main body of the tool system according to the present invention, showing a partially cut-away side view of the swage machining die with a portion switched to show the structure of the clamping member; 2 is a plan view of the main body of FIG. 1, in which the tightening member is shown in silhouette, and FIG. 3 is a plan view of the end of the shaft of the main body of FIG. perspective detail view,
4 is a side view of a tie of a tooling system used to enlarge the end of a cylindrical workpiece by a swaging operation; FIG. 5 is a top view of the die of FIG. 4; and FIG. Detailed view of a tooling system according to the invention using a double flaring die to crush the ends of a cylindrical workpiece (ki11 side view, detail with ties and clamping members shown in cross section) Side view 1, Figure 7 shows the present invention using a flaring die to complete the double flaring process when the workpiece is crushed by the die shown in Figure 6. Detailed side view of the tooling system, FIG. 8 is an exploded perspective view of the die of another embodiment of the tooling system according to the invention,
9 is a partially sectional side view of the die of FIG. 8; FIG. 10' is a detailed perspective view of the die of FIG. 8; FIG. 12 is a detailed side view of a tie of another embodiment of a tooling system according to the invention, the tie being shown in section and also showing a portion of the shaft; FIG. , 11th
FIG. 13 is a cross-sectional plan view of the die of FIG. 11 similar to FIG. 12, showing the cam spring rotated; FIG. 14 is a detailed plan view of the strap of the main body of FIG. 1, showing the strap in silhouette in a pivoted position;
FIG. 15 is a detailed side view of the tooling system of FIGS. 1-7 showing a tie flaring a tubular workpiece; FIG. 17 is a detailed partial side view of the tooling system of FIGS. 1-7 showing the die forming a 180° flare; FIG. 17 is a detailed partial side view of the tooling system of FIGS. FIG. 18 is a detailed side view of the shaft and handle of the invention, showing the shaft in section; FIG. 18 is a detailed side view of the die of another embodiment of the invention; FIG. , a further perspective view of the cage of the tool system according to the present invention. 10...Main both 112-...Qui, 14, 16...
・Tightening member, 42...Strap, 54...Shaft, 60/80...Recess, 65...Part of spatula 1,
66...Circumference i? 7L 6・8...Bear link surface, 7
2A/72B... working surface, 94/94A... workpiece. (5 people outside)

Claims (7)

[Claims] (1) A main body having a pair of clamping members for gripping the workpiece therebetween, a strap portion disposed apart from the clamping members, moving toward or away from the gripping member; a shaft having a die supporting end threaded onto the strap member and adjacent the clamping member, and each having a die supporting end adjacent the clamping member upon movement of the shaft relative to the clamping member; In a tool system of the type having a plurality of dies that collapses the working surface for forming a workpiece gripped by: a circle whose die supporting end terminates in and is adjacent to the head; a circumferential groove and a bearing surface at the end thereof opposite the clamping member; each of the dies has a recess dimensioned to receive the head; means for engaging the die recess and thereby retaining the head portion within the recess; and having a mating bear link surface within the interior of the die recess; The surface is arranged to abut the bearing surface of the head when the head is delivered into the recess so as to be transmitted from the mating bearing surface to the mating bearing surface. tool system. (2) The groove engagement means is rotatably mounted around the recess of the tie and includes a protrusion, a circular cam spring that is slidably attached to the tie. A fixed pin,
A fixed pin extending radially and inwardly toward the recess so that its inner end engages and meets the circumference 7t (t) when displaced radially and inwardly. 2. The tool system of claim 1, including a locking pin having a radially outer end slidably engaging said cam spring. (3) shoulder means in which the groove engagement means defines a laterally open cavity in the die dimensioned to receive the head and a slot at the end of the die opposite the working surface; shoulder means for slidably receiving the circumferential groove so that the die is retained on the die support end by engagement of the head and the shoulder means; the recess having;
and means for releasably retaining said head within said recess. (4) the retaining means comprises a spring-loaded detent ball disposed on the bearing surface of the head and a detent recess formed in the mating bearing surface of the die; Characterizing Claim No. 3J
The tooling system described in Jt. (5) the retaining means includes a cap rotatably carried on the die, the upper cap having slot means for placing the head into the recess; The slot means may be rotated to place the slot in register with the slot of the die, or the slot may be rotated into register with the slot of the tie such that the head is taken into the recess. 4. A tool system as claimed in claim 3, wherein the tool system is rotatably arranged to remove the slot means from the tool. (6) At least one of the dies forms a gauge means for setting the optimum distance that the tubular workpiece should project from the clamping member. tooling system. (7) said gauge means forming an annular notch in said die, said notch having a depth corresponding to said optimum distance and a width not less than the outer diameter of the tubular workpiece to be swaged; Claim 6 characterized by
Tool system according to item 〇 (8) The shaft of the main body is a housing disposed at an end opposite to the goo supporting end, and a hole extending across the housing. a housing having: a handle slidably disposed in the hole;
a handle having a frustoconical neck adjacent one end thereof and a stop disposed between the neck and the adjacent end; and a spring load return located within the housing. stop means for contacting the handle such that an end of the handle can be inserted into the hole, whereby the return stop means engages the frustoconical neck but returns the handle; +4; Claim 1, further comprising a spring-loaded return means, wherein the handle is prevented from being removed from the hole by contact between the handle and the stop. tooling system. (9) At least one of the dies includes a working surface having a flat annular shape and oriented in a plane perpendicular to the longitudinal axis of the die. The tool system according to 01: a pair of clamping members for gripping a workpiece therebetween, a strap member disposed apart from the clamping members, the strap member moving towards or away from the clamping members; a shaft having a gouging support end threaded onto said strap member and adjacent said fastening member; and said fastening member of said shaft being attached to said gouging support end; In a tool of the type having a die having a working surface for forming a workpiece gripped by said clamping member during movement in the direction of: terminating in and adjacent to said head part; The gooey supporting end portion has a circumferential groove; the gooey support end portion has a laterally opening recess having dimensions J and S to accommodate the head portion, and includes a scrap means disposed on the side opposite to the working surface of the upper U-pin 9; a slot for slidably receiving said groove such that said shoulder means is retained on said goo support end by engagement with said shoulder means of said die or said head portion; and means for releasably retaining the head within the recess. θη the head is generally cylindrical in shape; a substantially flat bearing surface opposite the fastening member; and when the tie is attached to the shaft;
When the shaft is displaced toward the clamping member and driving the working surface towards a workpiece gripped by the clamping member, the bearing surface engages and transmits a compressive force from the shaft to the tie. 11. A tool as claimed in claim 10, characterized in that said recess includes a substantially flat bearing surface facing said shoulder means in order to do so. (b) The tool according to claim 11, wherein the holding means includes a return means attached to the bear link surface. α) The detent means includes a spring-loaded detent ball mounted in the upper δ[1 bearing surface of the head and a detent hole formed in the bearing surface of the die; Claim 12, wherein the detent pole and the detent hole are arranged so that they are in a predetermined register when the tie is attached to the upper Sl:', head section. A tool according to claim 13, wherein the working surface includes a generally cylindrical pilot portion and a generally concave annular portion concentrically with the pilot portion. . α→ Claims characterized in that the working surface includes a generally frusto-conical portion and a pilot portion extending outwardly from and in concentric relation with the frusto-conical portion. 10. The tool according to claim 13, wherein the operating surface has a substantially round button shape. means for gripping a tubular workpiece, a threaded shaft having a die supporting end, means attached to said shaft for moving towards or away from the gripped workpiece; and said A tool of the type having a die attached to the die support end, the die having an effect jn1, and said tie having a laterally opening recess dimensioned to accommodate a portion of said die support end. said die or said die to be retained on said shaft by engagement of said waste means with said die support end by said scrap means disposed on the opposite side of said working surface; A tool comprising a scrap means defining a slot therebetween for slidably engaging the groove. 0→ The above action of the tie -1ii1 is the pilot part,
The patent claim includes a truncated conical portion disposed inside the pilot portion, and a cylindrical sizing portion disposed inside the intracranial conical fall portion. Range 1
Tools described in Section 7. The tool according to claim 17, wherein the workpiece is a hard steel pipe.