Punch assembly and tool-free system for holding and releasing chips

Abstract

A punch assembly that allows for selective locking and release of the punch tip to the punch body (or holder) of the assembly, wherein various retention / release systems may be used with the punch body, particularly with respect to the trigger mechanism of such system and its function and use in locking and release of the punch tip, without adversely affecting the long-term effectiveness and efficacy of the assembly.

Description

Technical Field

[0001] The present invention relates to a punch assembly, and more particularly to various systems used with it to selectively hold and release a punch tip. (Cross-reference to related applications) This application claims the priority of U.S. Patent Application No. 17 / 030,326, filed on September 23, 2020, the content of which is incorporated herein.

Background Art

[0002] Punch presses are typically configured to hold a plurality of tools for forming indentations and / or holes of various shapes and dimensions in, for example, a sheet material formed of a thin metal plate. This type of tool generally includes at least one punch assembly and a corresponding die. In a multi-station turret punch press, a rotatable turret is often used to hold a plurality of punch assemblies above the workpiece support surface, and a corresponding plurality of die receiving frames are disposed below the workpiece support surface. In some cases, when a first set of tools is used, it is replaced with a second set of tools, and then replaced with a third set of tools, etc. In some cases, a machine tool includes an elongated rail for storing a set of tools in a cartridge. The cartridge can, for example, slidably engage with the rail, such that the cartridge can slide back and forth relative to the mounting position. When a first workpiece is completely processed using a desired series of tool sets, a second workpiece can, in some cases, be processed starting again from the first set of tools.

[0003] Conventional punch assemblies are known to include a punch body (or holder) and a punch tip. Therefore, various punch assemblies are designed to function further with the use of a punch guide. Generally, the punch body and tip are slidably engaged within the punch guide for reciprocating motion along the central longitudinal axis of the punch guide. Such a punch assembly (and corresponding die) is mounted within a press and positioned in the press's working position, for example, under (or integrally connected to) the ram. Thus, when a downward force is applied to the ram, the punch tip is driven outward from the punch guide, correspondingly through an opening in a stripper plate, to contact and form a recess or hole through the sheet workpiece (using the corresponding die). A stripper plate attached to the end of the punch guide prevents the workpiece from returning into the punch guide when the punch tip retracts.

[0004] In various punch assemblies, the punch body and punch tip are formed integrally. However, designs with a tip that can be detachably attached to the punch body are becoming increasingly common. Those skilled in the art understand that punch assemblies require periodic maintenance and improvement, and these functions can be performed more effectively when using punch assemblies with a removable tip (as opposed to integral punch assemblies). For example, a punch tip that needs to be sharpened or replaced due to wear can be replaced with another readily available tip. As a result, tool downtime can be reduced, and corresponding work delays can be reduced. Furthermore, the punch body (for such designs with a removable tip) can be found to have a significantly increased lifespan and improved versatility. In particular, the punch tip may need to be replaced (or replaced at the end of its life), but the punch body can then be used with a new punch tip. Moreover, these new tips used with the punch body can be similar or different in type and / or dimensions.

[0005] A punch assembly with a releasable punch tip can be an effective design as described above, but the design must be equally effective. In particular, the tip must be properly seated when mounted in the punch body. Those skilled in the art will understand that without proper seating, the corresponding use of the punch assembly may be impaired. In some cases, proper seating may be influenced by the design of the tip holding / release system. One aspect often included in such systems is a trigger mechanism. For this purpose, various designs show that the mechanism not only functions as a trigger for tip release but also as a support for the tip when held by the punch body. Alternatively, or in combination, various designs show external tools used with such a mechanism, while various designs show the use of multiple mechanisms. These and other design aspects may affect the effectiveness (or performance) of the punch assembly over its lifespan. For example, the performance level of an assembly in use may decline over time simply due to a flaw in the overall design. Conversely, such a performance level may be maintained over a long period, but this would incur considerable cost or complexity for the design of the assembly.

[0006] Embodiments of the present invention focus on addressing the above-mentioned problems. [Overview of the project]

[0007] Embodiments of the present invention relate to a punch assembly that enables selective fixing and release of punch tips to and from the punch body (or holder) of the assembly. Other embodiments of the present invention relate to the punch body of such a punch assembly, and a holding / release system used in conjunction with such a punch body. Further embodiments of the present invention relate to a trigger mechanism for such a holding / release system, in particular its function in such a system, and its use with auxiliary components relating to the fixing and release of punch tips. One focus is to provide a punch assembly design having a tip release / holding system that is particularly advantageous in certain respects and improves the effectiveness and efficiency of the assembly.

[0008] In various embodiments, a punch body is provided. The punch body comprises a side wall defining a central cavity, the central cavity extending along the longitudinal direction of the punch body. The punch body further comprises a holding / releasing system including a trigger mechanism, a coupling mechanism, and an elastic member. The trigger mechanism is accessible on the side wall of the punch body and is manually adjustable relative to the side wall. The trigger mechanism connects the punch body to the coupling mechanism. The elastic member resists adjustment of the trigger mechanism. When manual force is applied to the trigger mechanism, the coupling mechanism moves from a first position within the central cavity of the punch body to a second position corresponding to the unlocked state of the punch body relative to the punch tip. The elastic member removes the manual force and moves the coupling mechanism back to the first position, which corresponds to the locked state of the punch body relative to the punch tip.

[0009] In an additional embodiment, a punch body is provided, comprising a side wall defining a central cavity, the central cavity extending along the longitudinal range of the punch body. The punch body further comprises a holding / releasing system including a trigger mechanism, a coupling mechanism, and an elastic member. The trigger mechanism is accessible on the side wall of the punch body and is manually adjustable relative to the side wall. The trigger mechanism connects the punch body to the coupling mechanism, and the elastic member is located in the central cavity of the punch body below the coupling mechanism. The trigger mechanism has an arm portion and a projection portion. The arm portion is configured to receive the force of one or more fingers, and when the finger force is applied, the projection portion corresponds to moving the coupling mechanism. The arm portion in the first position corresponds to the coupling mechanism located in a shallower position within the central cavity of the punch body, corresponding to the locked state of the punch body relative to the punch tip. The arm portion in the second position corresponds to the coupling mechanism located in a deeper position within the central cavity of the punch body, corresponding to the unlocked state of the punch body relative to the punch tip.

[0010] In a further embodiment, a method is provided for securing a punch tip to a punch body. The method includes the step of providing a punch body, which has side walls defining a central cavity extending along the longitudinal direction of the punch body. The punch body comprises a holding / releasing system including a trigger mechanism, a coupling mechanism, and an elastic member. The coupling mechanism is seated in the central cavity of the punch body, and the trigger mechanism connects the punch body and the coupling mechanism. An additional step is to prepare the punch body so that the punch tip can be coupled to the punch body. Another step is to move the coupling mechanism to a position corresponding to the locked state of the punch body.

[0011] Other features and advantages characterizing embodiments of the present invention will become apparent by reading the following detailed description and examining the relevant drawings. [Brief explanation of the drawing]

[0012] The following drawings are illustrative of specific embodiments of the present invention and do not limit the scope of the invention. The drawings are not to a fixed scale (unless otherwise stated) and are intended to be used in conjunction with the descriptions in the following detailed description. Embodiments of the present invention will be described below in conjunction with the accompanying drawings, where similar numbers indicate similar elements. [Figure 1A] Figure 1A is a perspective view of a punch assembly design provided in a first station configuration according to one embodiment of the present invention. [Figure 1B] Figure 1B is a side cross-sectional view of the punch assembly of Figure 1A, cut along line 1B-1B, according to one embodiment of the present invention. [Figure 1C] Figure 1C shows the punch assembly of Figure 1A, as an exploded view according to a specific embodiment of the present invention. [Figure 1D] Figure 1D is the same diagram as the punch assembly shown in Figure 1B, but it merely illustrates the punch body and the trigger mechanism in the operating position according to a specific embodiment of the present invention. [Figure 1AA]Figure 1AA is a perspective view of a punch assembly similar in design to that shown in Figure 1A, further provided in a second station configuration according to one embodiment of the present invention. [Figure 1BB] Figure 1BB is a side cross-sectional view of the punch assembly of Figure 1AA, taken along the line 1BB-1BB, according to a particular embodiment of the present invention. [Figure 1CC] Figure 1CC is an exploded view of the punch assembly shown in Figure 1AA, according to one embodiment of the present invention. [Figure 1DD] Figure 1DD is a diagram of the same punch assembly shown in Figure 1BB, having a trigger mechanism in the operating position, according to a particular embodiment of the present invention. [Figure 2A] Figure 2A is a perspective view of another punch assembly design provided in a first station configuration according to one embodiment of the present invention. [Figure 2B] Figure 2B is a side cross-sectional view of the punch assembly of Figure 2A, cut along line 2B-2B, according to a particular embodiment of the present invention. [Figure 2C] Figure 2C shows the punch assembly of Figure 2A, as an exploded view according to a specific embodiment of the present invention. [Figure 2D] Figure 2D is the same diagram as the punch assembly shown in Figure 2B, and its trigger mechanism is shown in the release position according to a particular embodiment of the present invention. [Figure 2AA] Figure 2AA is a perspective view of a punch assembly similar in design to that shown in Figure 2A, further provided in a second station configuration according to one embodiment of the present invention. [Figure 2BB] Figure 2BB is a side cross-sectional view of the punch assembly of Figure 2AA, cut along line 2BB-2BB according to a particular embodiment of the present invention. [Figure 2CC] Figure 2CC is an exploded view of the punch assembly shown in Figure 2AA, according to one embodiment of the present invention. [Figure 2DD] Figure 2DD is a diagram of the same punch assembly shown in Figure 2BB, having a trigger mechanism in the operating position, according to a particular embodiment of the present invention. [Figure 3A]FIG. 3A is a perspective view of a further punch assembly provided in a first station configuration according to an embodiment of the present invention. [Figure 3B] FIG. 3B is a side cross-sectional view of the punch assembly of FIG. 3A taken along line 3B-3B according to an embodiment of the present invention. [Figure 3C] FIG. 3C is an exploded assembly view of the punch assembly of FIG. 3A according to an embodiment of the present invention. [Figure 3D] FIG. 3D is the same view of the punch assembly shown in FIG. 3B, and its trigger mechanism is shown in the release position according to a particular embodiment of the present invention. [Figure 3AA] FIG. 3AA is a perspective view of a punch assembly similar in design to that shown in FIG. 3A provided in a second station configuration according to an embodiment of the present invention. [Figure 3BB] FIG. 3BB is a side cross-sectional view of the punch assembly of FIG. 3AA taken along line 3BB-3BB according to an embodiment of the present invention. [Figure 3CC] FIG. 3CC is an exploded assembly view of the punch assembly of FIG. 3AA according to an embodiment of the present invention. [Figure 3DD] FIG. 3DD is the same view of the punch assembly shown in FIG. 3BB, and the trigger mechanism is shown in an intermediate position according to a particular embodiment of the present invention. [Figure 4] FIG. 4 is a flowchart of steps for fixing a punch tip for the punch assemblies of FIGS. 1-3 to a punch body according to a particular embodiment of the present invention.

MODE FOR CARRYING OUT THE INVENTION

[0013] The following detailed description is essentially illustrative and is not intended in any way to limit the scope, applicability, or configuration of the invention. Rather, the following description provides practical examples for carrying out exemplary embodiments of the invention. Examples of structure, materials, and dimensions are provided for selected components, and all other components use those known to those skilled in the art of the invention. Those skilled in the art will recognize that many of the embodiments provided have suitable alternatives available.

[0014] The punch assemblies embodied herein exhibit certain advantages, such as shorter downtime for the punch assembly during maintenance / improvement of punch tips and a longer lifespan for the punch body. However, the embodied punch assemblies further include a tip holding / release system having a preferred design configuration, as described herein. For example, the trigger mechanism of these systems has a relatively simple and easy-to-use design. To this end, the embodied holding and release systems are configured to enhance both the effectiveness and advantages of the punch assembly.

[0015] Figure 1A shows a perspective view of a punch assembly 10 provided in a first station configuration (commonly known as the "B" station) according to one embodiment of the present invention. For this purpose, certain station configurations are depicted in the drawings, but these are merely examples for the punch assemblies that will be materialized, and the present invention should not be limited to such configurations. Furthermore, although this assembly 10 and other punch assemblies materialized herein are not shown, those skilled in the art will understand that punch guides are often used with punch assemblies in their configurations for machining processes. Briefly, a punch guide generally forms a tubular channel in which the punch assembly is held when not in use and partially driven when used to perform a machining process. Such a punch guide generally includes a spring pack (or driver) assembly coupled to a first end of the guide and a stripper plate coupled to a second opposing end of the guide. For this purpose, those skilled in the art will understand that the punch assemblies materialized herein can be used, as desired, with a wide variety of punch guide designs, as well as corresponding spring pack assemblies and their stripper plates.

[0016] Returning to Figure 1A, the punch assembly 10 is shown to include a punch body 12 and a punch tip 14. As previously stated, the punch body 12 is configured to selectively hold or release the punch tip 14, and one component of the holding and releasing system used to actuate either the fixing or release of the tip 14 relative to the body 12 is a trigger mechanism 16. For that purpose, the trigger mechanism 16 is operably coupled to the punch body 12, and this coupling allows the trigger mechanism 16 to be selectively moved relative to the punch body 12, through which the trigger mechanism 16 brings the state to hold or release the punch tip 14 relative to the punch body 12.

[0017] Continuing with the trigger mechanism 16, the focus shifts to Figures 1B and 1C, which show a cross-sectional view and an exploded view of the punch assembly 10, respectively. As shown, the punch body 12 has a side wall 22 that defines a central cavity 18 into which the punch tip 14 is fixed. The trigger mechanism 16 is configured, as shown, to pass through an opening 20 in the side wall 22 of the punch body and thus extend into the central cavity 18 of the punch body 12. As shown, in a particular embodiment, the side wall 22 of the punch body is defined by a channel 24 sized to hold the trigger mechanism 16, and the channel 24 further defines an opening 20 that is in fluid communication with the central cavity 18 of the punch body. In a particular embodiment shown, the channel 24 is sized so that the trigger mechanism 16 is embedded within it when it is in its "non-operating" position, as shown in Figures 1A and 1B. Therefore, by holding the trigger mechanism 16 within the channel 24 (and thus not affecting the external shape of the punch body), the punch assembly 10 is better equipped for use with the punch guide as needed. In particular, when the assembly 10 is used within the punch guide, the recessed trigger mechanism 16 (and other trigger mechanisms embodied herein) is restricted from moving from its "non-operating" position (and correspondingly from its "locked" state) due to the surrounding wall of the punch guide. To this end (and as can be better understood from the description / drawings), restricting the operation of the trigger mechanism 16 consequently prevents important and accidental release of the punch tip during machining operations.

[0018] The trigger mechanism 16 is independently and simply molded so that when it is moved, it can initiate the operation of other auxiliary components of the holding / releasing system. Continuing with the trigger mechanism 16, in certain embodiments, as shown, it is formed as a single, integrated component operably coupled to the side wall 22 of the punch body. For example, as shown with reference to Figures 1B, 1C, and 1D, the trigger mechanism 16 is molded as a lever having an arm portion 16a, an elbow portion 16b, and a projection portion 16c. To this end, the elbow portion 16b is operably coupled to the side wall 22 of the punch body, for example, via a pin 26, and as a result, the trigger mechanism 16 is selectively rotatable about the pin 26 and relative to the punch body 12. As shown, the trigger mechanism 16 is located on the punch body 12 The arm portion 16a is coupled to the side wall 22 of the punch body (with the arm portion 16a correspondingly oriented) so as to extend parallel to the longitudinal axis A (see Figure 1D). In the design including the channel 24 (defined in the side wall 22 of the punch body) described above, in certain embodiments the length of the channel may also be correspondingly defined so as to extend parallel to the longitudinal axis A.

[0019] Another auxiliary component of the holding / releasing system may include a coupling mechanism that is held within the punch body 12 and directly coupled to the trigger mechanism 16. In a particular embodiment shown, the coupling mechanism may include a carrier body 28. Referring to Figures 1B and 1C, the carrier body 28 is inserted into the central cavity 18 of the punch body and is defined by a side wall hole 30 configured to align with an opening 20 in the side wall 22 of the punch body 12. Thus, when inserted into the channel 24, the trigger mechanism 16 (and in particular its protruding portion 16c) is configured to pass further through the opening 20 into the hole 30 of the carrier body. As will be described later, this coupling between the carrier body 28 and the trigger mechanism 16 allows for the corresponding movement of the body 28 from the movement of the trigger mechanism 16. As will be described in further detail, other auxiliary components that enable the alternating locking or release of the punch tip 14 from the punch body 12 may include one or more elastic members (e.g., springs 32 and / or 34), a cap 36, and a plurality of wedge members 38.

[0020] Referring to Figures 1B, 1C, and 1D, a first elastic member, such as a spring 32, is positioned beneath the carrier body 28 within the central cavity 18 of the punch body 12. As a result, as shown in Figure 1B, the spring 32 elastically biases the carrier body 28 outward relative to the cavity 18 of the punch body (i.e., toward the front end 12a of the punch body 12). However, as described above, the subsequent connection between the trigger mechanism 16 and the carrier body 28 (via the protruding portion 16c inserted into the side wall hole 30 of the carrier body) prevents the carrier body 28 from being pushed further outward relative to the cavity 18 of the punch body by the spring 32. To this end, the movement of the carrier body 28 is directed via the movement of the trigger mechanism 16 (and the corresponding movement of the protruding portion 16c). In particular, when the arm portion 16a of the trigger mechanism 16 is lifted (at the end opposite to the elbow portion 16b), the projection portion 16c pivots inward in relation to the central cavity 18 of the punch body, and as a result, the body 28 is correspondingly biased away from the front end 12a of the punch body 12 to a deeper position within the cavity 18. Such a deeper positioning of the carrier body 28 is best illustrated in Figure 1D, which probably represents an "unlocked" (or "released") state for the punch body 12 relative to the punch tip 14. Conversely, when the trigger mechanism 16 is released (thereby pulling the arm portion 16a back toward the side wall 22 of the punch body by the action of the spring 32 on the carrier body 28), the projection portion 16c pivots outward in relation to the central cavity 18 of the punch body. Correspondingly, the carrier body 28 is moved toward the front end 12a of the punch body 12 and to a shallower position within the cavity 18 of the punch body. Such shallower positioning of the carrier body 28 is best illustrated in Figure 1B, which probably represents a “locking” (or “holding”) configuration for the punch body 12 relative to the punch tip 14. Against this backdrop, it should be understood that the reason the trigger mechanism 16 is positioned parallel to the longitudinal axis A of the punch body 12 is that the lever-like movement of the mechanism 16 along that axis A allows for the corresponding movement of the carrier body 28 along that axis A.

[0021] In certain embodiments (and further referring to Figures 1B and 1C), additional elastic bodies, such as a spring 34 and a cap 36, are configured together with the carrier body 28. For example, as shown in Figure 1B, the spring 34 is located within the central cavity 40 of the carrier body 28, and the spring 34 is then covered by the cap 36 within the cavity 40. Thus, the spring 34 elastically biases the cap 36 outward relative to the carrier body 28 (i.e., toward the front end 28a of the body 28). In certain embodiments, as shown, an inner projection 42 is provided within the central cavity 40 of the carrier body 28 (e.g., an outer extension on the inner surface). While such a projection 42 may be integrally defined and formed as part of the carrier body 28, it should be understood that in certain embodiments, the projection may be provided as a ring gasket seated within a circular channel in the central cavity 40. Such projections 42, through their extension into the cavity 40, prevent the cap 36 from moving excessively away from the floor 28b of the carrier body 28 via the action of the spring 34. In a particular embodiment as shown, when the outer edge 36a of the cap 36 contacts the projection 42, further outward movement of the cap 36 within the central cavity 40 of the carrier body 28 is prevented. Apart from the inner projection 42, the movement of the cap 36 is further directed via the movement of the carrier body 28 and the corresponding movement of the wedge member 38, as will be described in detail.

[0022] In summary, the trigger mechanism 16 is configured such that its arm portion 16a is lifted relative to the side wall 22 of the punch body, activating auxiliary components of the holding / releasing system to provide an "unlocked" (or "released") state for the punch body 12. It should be understood that the lifting operation of the arm portion 16a is a tool-less operation, meaning that no tools are required. For this purpose, the operation can be easily performed, for example, with a single finger of the user, by moving the arm portion 16a in a single direction, i.e., outward relative to the side wall 22 of the punch body. In certain embodiments, as shown in the figures, the side wall 22 is provided with a recess 44 for accommodating the end of the arm portion 16a to be actuated upon, into which a person can insert their fingertip to scoop up and lift the arm portion 16a. As will be further detailed below (and with reference to Figures 1B and 1C), the alternating movement (or positioning) of the carrier body 28 corresponds to locking or releasing the punch tip 14 relative to the punch body 12.

[0023] The alternating movement of the arm portion 16a correspondingly triggers the opposing movement of the carrier body 28 within the cavity 18 of the punch body, the carrier body 28 is configured to function with a plurality of wedge members 38 in fixing or releasing the punch tip 14 relative to the punch body 12. To this end, with reference to ends 1B, 1C, and 1D, the wedge members 38 are positioned to accommodate the members correspondingly, aligned between a plurality of corresponding openings 28c within the carrier body 28 and grooves 12b defined within the side wall 22 of the punch body 12 (outside the openings 28c). In certain embodiments, at least three wedge members 38 are used, and the grooves 12b are defined to be continuous around the inner surface of the side wall 22. In certain embodiments, as shown, the openings 28c are located at the front end 28a of the carrier body 28, and the openings 28c are defined equidistantly around the circumference of the outer surface of the body. As will be further detailed below (referring to Figures 1B and 1D), the movement of the carrier body 28 (via the movement of the arm portion 16a) results in the wedge member 38 moving in accordance with the opening 28c and groove 12b of the carrier body of the punch body 12.

[0024] For example, starting from Figure 1B, the punch body 12 is shown with the punch tip 14 fixed thereto. Therefore, as shown, the trigger mechanism 16 is in a "deactivated" position, corresponding to the punch body 12 being "locked" to the punch tip 14. In certain embodiments, as shown, when the trigger mechanism 16 is in its "deactivated" position, the arm portion 16a contacts the side wall 22 of the punch body, and the arm portion 16a is driven to contact the side wall 22 in this manner via a force SF from a spring 32 on the carrier body 28. In particular, the spring force SF elastically biases the trigger mechanism 16 to resist a lifting force LF (see Figure 1D) applied to the arm portion 16a, and as a result, the punch body 12 remains in the "locked" state without the lifting force LF being applied. Separately, for comparison, various holding / releasing systems use a tool to activate their trigger mechanism, thereby changing the configuration of the punch body from a "locked" state to an "unlocked" state (and vice versa). One reason for this might be to ensure that the punch body remains "locked" to the punch tip. However, the elastic biasing of the trigger mechanism 16 via the spring force SF (Figure 1B) provides a level of fixation that ensures the punch body 12 remains "locked" unless the arm portion 16a is intentionally lifted.

[0025] Continuing to refer to Figure 1B, in a particular embodiment, when the arm portion 16a is in the “non-operational” position, it extends substantially parallel to the longitudinal axis A of the punch body 12 (Figure 1D). The angular relationship between the projection portion 16c and the arm portion 16a (e.g., about 90°) allows the mechanism 16 to contact and hold the carrier body 28 within the central cavity 18 of the punch body, although the spring force SF biases the body 28 to its shallowest position within the central cavity 18 of the punch body. In such a position of the carrier body 28, as shown, the wedge member 38 is engaged within the opening 28c of the carrier body between the hub 14a of the punch tip 14 and the wall 12c of the inner groove 12b of the side wall 22 of the punch body. Separately, for comparison, various holding / releasing systems use their trigger mechanisms not only to trigger states for holding or releasing the punch tip, but also to fix and seat the punch tip in the punch body. One reason for this might be to reduce the amount (and corresponding cost) of parts used in the punch assembly. However, this type of design can sometimes prove detrimental to the punch assembly, considering the substantial impact force continuously transmitted to the trigger mechanism during the assembly's use. In a punch assembly 10 that uses specific components for fixing and seating the punch tip 14 (such as the carrier body 28 and wedge member 38), the trigger mechanism 16 is indirectly connected to the punch tip 14, and there is a design separation between the trigger function and the seating function, thereby limiting potential crossover effects that could significantly affect the performance of the punch assembly over its lifespan.

[0026] Moving to Figure 1(d), a lifting force LF is applied to the arm portion 16a of the trigger mechanism 16. Thus, the protruding portion 16c of the mechanism 16 is pivoted inward relative to the central cavity 18 of the punch body, and through its contact with the carrier body 28, the carrier body 28 is correspondingly biased inward relative to the cavity 18. This inward positioning of the carrier body 28 (opposed by the spring force SF of the spring 32) aligns the opening 28c of the carrier body with the deeper portion of the groove 12b in the side wall 22 of the punch body. Thus, the larger portion of the wedge member 38 can move from the opening 28c of the carrier body into the groove 12b. Such movement of the wedge member 38 is shown in Figure 1D (compared to that depicted in Figure 1B), which shows that the punch tip 14 is missing, i.e., already released from the punch body 12. In particular, if the wedge member 38 can slide into a deeper portion of the groove 12b, the additional spring 34 and cap 36 can accelerate the process of releasing the punch tip 14. In particular, the spring force SF2 from the spring 34 and the cap 36 The corresponding contact directed from the punch tip onto the hub 14a pushes the hub 14a out of the carrier body 28, and accordingly slides the wedge member 38 into the deeper portion of the groove 12b. Furthermore, as shown in the figure, the cap 36 is pressed toward the front end 28a of the carrier body 28, and as already described, the cap 36 can be held in contact with the inner projection 42. In such a case, this positioning of the cap 36 corresponds to suspending the wedge member 38 in the opening 28c and groove 12b, with the punch tip 14 removed.

[0027] Subsequently, to connect and seat the punch tip 14 to the punch body 12, the user simply inserts and returns the hub 14a of the punch tip into the central cavity 40 of the carrier body without needing to act on the trigger mechanism 16. In certain embodiments, the hub 14a is inserted beyond the wedge member 38 until it contacts the inner projection 42 in the cavity 40. Applying sufficient inward force to the punch tip 14 or its hub 14a will, accordingly, move the carrier body 28 further into the cavity 40 and into contact with the spring 32. In certain embodiments, such an inward force needs to be greater than the spring force SF of the spring 32. As already described, it should be understood that when the spring 32 is compressed, the trigger mechanism 16 is correspondingly lifted outward to its "operated" position (via the link between the carrier body 28 and the projection 16c of the trigger mechanism 16). For that purpose, the subsequent release of the inward force on the punch tip 14 returns the trigger mechanism 16 to its "deactivated" position (given the spring force SF of the spring 32 acting on the carrier body 28 and the protruding portion 16c), and the carrier body 28 moves to its shallower position within the central cavity 18 of the punch body. Correspondingly, the wedge member 38 is displaced from the deeper portion of the groove 12b (via contact with the surrounding wall of the carrier body 28 that defines the opening 28c), and correspondingly returns to their positions in the opening 28c and groove 12b of the carrier body, as shown in Figure 1B. Separately, for comparison, various retaining / releasing systems use multiple trigger mechanisms to trigger states for retaining or releasing the punch tip. This type of design can perhaps divide any impact force transmitted to the trigger mechanism during use of the assembly. However, as described above, keeping the trigger mechanism 16 indirectly connected to the punch tip 14 maintains the fixing and seating function of the punch body 12, and consequently its performance, throughout its lifespan, while simultaneously keeping the design user-friendly and relatively simple in its configuration.

[0028] Figures 1AA–1DD relate to embodiments of punch assembly 10', which are similar in design to assembly 10 shown in Figures 1A–1D, as referenced above, but are provided in a second station configuration (commonly known as the "A" station). As recognized, due to different assemblies, but also based on design similarity, the reference numbers in Figures 1AA–1DD are provided as subsequent iterations of the elements used in Figures 1A–1D. With regard to the main differences between punch assembly 10 and 10', punch assembly 10' has a longer range and, accordingly, increases the range of many of its components, including the punch body 12' and tip 14', the trigger mechanism 16', in particular its arm portion 16a', and the carrier body 28' and cap 36'. Furthermore, in the particular embodiments shown, the protruding portion 16c' of the mechanism 16' is at a larger angle (e.g., about 120°) from the arm portion 16a'. Such an increased angle provides greater lever force to the carrier body 28' (and to the spring 32) when LF' is applied to the trigger mechanism 16', which is beneficial in the longer design of the assembly 10'. Also, the punch assembly 10' has a thinner profile so that the amount of the wedge member 38' can be reduced (to two amounts) while still providing an effective fixing and seating function of the punch body 12' to the punch tip 14'. Furthermore, the fastener 36a' for the cap 36' (for holding the cap 36' in the carrier body 28') holds the cap 36' inside the carrier body 28' via contact with the inner projection 42'. outer edge 36a In contrast to the cap, it is located approximately midway along the side wall. Finally, in Figure 1DD, the punch tip 14' is shown as still attached to the punch body 12'. However, based on the illustrated outward movement of the wedge member 38' in the deeper portion of the groove 12b' (and given the outward movement of the trigger mechanism 16' and the deeper positioning of the carrier body 28' in the central cavity 18' of the punch body), a person skilled in the art will understand that the punch tip 14' is about to be driven out of the punch body 12' via contact from the cap 36 by a spring force SF2' from the spring 34'.

[0029] Figure 2A shows a perspective view of another punch assembly 110 provided in a "B" station configuration according to one embodiment of the present invention. Similar to the punch assembly 10 in Figure 1A, the punch assembly 110 is shown to include a punch body 112 having a trigger mechanism 116 used to actuate either the locking or release of a punch tip 14 relative to the punch body 112. To this end, the punch assembly 110 has similar features (similar functions at the ends) as already described for the punch assembly 10 in Figure 1. For example, similar to the trigger mechanism 16 in Figure 1A, the trigger mechanism 116 is operably coupled to the punch body 112, but the coupling allows the trigger mechanism 116 to be selectively moved relative to the punch body 112, and through such movement, the trigger mechanism 116 brings into a state for holding or releasing the punch tip 14 relative to the punch body 112.

[0030] Moving on to Figures 2B and 2C, which show a cross-sectional view and an exploded view of the punch assembly 110, respectively, many of the structural differences (compared to the punch assembly 10) relate to the punch body 112, the trigger mechanism 116, and related features. Starting with the punch body 112, it has a side wall 122 defined by a central cavity 118, in which the punch tip 14 is fixed to the body 112. The trigger mechanism 116 is configured, as shown, to pass through an opening 120 in the side wall 122 of the punch body and thus extend into the central cavity 118 of the punch body 112. As shown, in a particular embodiment, the side wall 122 of the punch body is defined by a channel 124 sized to hold the trigger mechanism 116, and the channel 124 further defines an opening 120 that is in fluid communication with the central cavity 118 of the punch body. In the particular embodiment shown, the channel 124 is sized such that the trigger mechanism 116 is retracted into it when it is in the “non-operating” position, as shown in Figures 2A and 2B. Thus, by holding the mechanism 116 within the channel 124 (and therefore without affecting the external shape of the punch body), the punch assembly 110 is better equipped for use with the punch guide, as already described.

[0031] Similar to the trigger mechanism 16 in Figure 1A, the trigger mechanism 116 is uniquely but simply molded so that when the trigger mechanism 116 is moved, it can initiate the operation of other auxiliary components within the punch body 112. To this end, the trigger mechanism is formed as a single, integrated part that is operably coupled to the side wall 122 of the punch body. As further shown with respect to Figures 2B, 2C, and 2D, the trigger mechanism 116 is molded as a lever having an arm portion 116a, an elbow portion 116b, a projection portion 116c, and a leg portion 116d. To this end, the elbow portion 116b is operably coupled to the side wall 122 of the punch body, for example, via a pin 126, and as a result, the trigger mechanism 116 is selectively rotatable at the end of the pin 126 and relative to the punch body 112. As shown in the figure, the trigger mechanism 116 is coupled to the side wall 122 of the punch body 114 (with the arm portion 116a correspondingly oriented) so as to extend parallel to the longitudinal axis B of the punch body 114 (see Figure 2D). In the design including the channel 124 (defined in the side wall 122 of the punch body) described above, in certain embodiments the length of the channel may also be correspondingly defined so as to extend parallel to the longitudinal axis B.

[0032] Another auxiliary component of the holding / releasing system may include a coupling mechanism that is held within the punch body 112 and directly coupled to the trigger mechanism 116. In the particular embodiment shown, the coupling mechanism may include a carrier body 128. Referring to Figures 2B and 2C, the carrier body 128 is inserted into the central cavity 118 of the punch body and is defined by a side wall hole 130 configured to align with an opening 120 in the side wall 122 of the punch body 112. Thus, when inserted into the channel 124, the trigger mechanism 116 (in particular its protruding portion 116c) is configured to pass further through the opening 120 into the side wall hole 130 of the carrier body. As already described for assembly 10 in Figure 1A, this coupling of the carrier body 128 and the trigger mechanism 116 allows for the corresponding movement of the body 128 from the movement of the mechanism 116.

[0033] Other auxiliary components that enable the alternating locking or release of the punch tip 14 from the punch body 112 include elastic members (e.g., springs 32 and / or 34), a cap 36, and one or more of a plurality of wedge members 38, similar to those already described for the assembly 10 in Figure 1A. Therefore, the following description of the components for the punch assembly 110 in Figure 2A is limited.

[0034] Referring to Figures 2B, 2C, and 2D, the movement of the carrier body 128 is directed by the movement of the trigger mechanism 116 (and the corresponding movement of the projection 116c). In particular, when the arm portion 116a of the trigger mechanism 116 is pushed downward (at the opposite end of the elbow portion 116b), the projection 116c is pivoted inward in correspondence with respect to the central cavity 118 of the punch body, thereby biasing the body 128 to a deeper position within the cavity 118, correspondingly away from the front end 112a of the punch body 112. Such a deeper positioning of the carrier body 128 is best shown in Figure 2D, which perhaps represents an "unlocked" (or "released") state for the punch body 112 relative to the punch tip 14. Conversely, when the trigger mechanism 116 is released (thereby pulling the arm portion 116a upward toward the side wall 122 of the punch body via the action of the spring 32 on the carrier body 128), the projection portion 116c pivots outward relative to the central cavity 118 of the punch body. Correspondingly, the carrier body 128 moves toward the front end 112a of the punch body 112 and to a shallower position within the cavity 118 of the punch body. Such a shallower positioning of the carrier body 128 is best illustrated in Figure 2B, which perhaps represents a "locked" (or "held") state for the punch body 112 relative to the punch tip 14. With the above in mind, it should be understood that the reason the trigger mechanism 116 is positioned parallel to the longitudinal axis B of the punch body 112 is that the lever-like movement of the mechanism 116 along axis B allows for the corresponding movement of the carrier body 128 along axis B.

[0035] In summary, the trigger mechanism 116 is configured such that its arm portion 116a is pressed inward against the side wall 122 of the punch body to activate an auxiliary component of the holding / releasing system, thereby providing an "unlocked" state for the punch body 112. It should be understood that the pressing action of the arm portion 116a is a tool-less action, meaning that no tools are required. To that end, the action can be easily performed, for example, with a single finger of the user, so that the arm portion 116a is directed in a single direction, i.e., inward against the side wall 122 of the punch body. In certain embodiments, as shown in the figure, the side wall 122 is defined to have a recess 144 to accommodate the end of the arm portion 116a being actuated and to provide a space that the arm portion 116a (and pressing finger) can occupy when the arm portion 116a is pressed. As will be described in more detail below (and with reference to Figures 2B and 2C), the alternating movement (or positioning) of the carrier body 128 corresponds to fixing or releasing the punch tip 14 relative to the punch body 112.

[0036] As best shown in Figures 2B, 2C, and 2D, the wedge members 38 are positioned to accommodate the corresponding wedge members 38 by aligning between a plurality of corresponding openings 128c in the carrier body 128 and corresponding grooves 112b defined in the side wall 122 of the punch body 112 (outside the openings 128c). In certain embodiments, at least three wedge members 38 are used, and the grooves 112b are defined to be continuous around the inner surface of the side wall 122. In certain embodiments, as shown, the openings 128c are located at the front end 128a of the carrier body 128, and the openings 128c are defined equidistantly around the circumference of the outer surface of the body. As will be further detailed below (referring to Figures 2B and 2D), the movement of the carrier body 128 (via the movement of the arm portion 116a) causes the wedge members 38 to move between the openings 128c and grooves 112 in the carrier body of the side wall 122 of the punch body. b This results in movement in response to the situation.

[0037] For example, starting with Figure 2B, the punch body 112 is shown with the punch tip 14 fixed thereto. To this end, as shown, the trigger mechanism 116 is in a "deactivated" position, corresponding to the punch body 112 being "locked" to the punch tip 14. In certain embodiments, as shown, when the trigger mechanism 116 is in the "deactivated" position, the leg portion 116d contacts the side wall 122 of the punch body, and the leg portion 116d is driven to contact the side wall 122 in this manner via a force SF from a spring 32 on the carrier body 128. In particular, the spring force SF elastically biases the trigger mechanism 116 to resist the pressing force PF (see Figure 2D) applied to the arm portion 116a, and as a result, the punch body 112 remains in a "locked" state without any lift force PF being applied. It should be understood that there is a fixed level provided by the elastic biasing of the trigger mechanism 116 via the spring force SF, which ensures that the punch body 112 remains in a "locked" state unless the arm portion 116a is intentionally pushed down.

[0038] Continuing to refer to Figure 2B, in a particular embodiment, when the arm portion 116a is in the “non-operating” position, it extends substantially parallel to the longitudinal axis B of the punch body 112. The angular relationship between the projection portion 116c and the arm portion 116a (e.g., about 90°) allows the mechanism 116 to contact and hold the carrier body 128 within the central cavity 118 of the punch body, although the spring force SF biases the body 128 to its shallowest position within the central cavity 118 of the punch body. In such a position of the carrier body 128, the wedge member 38 is engaged in the opening 128c of the carrier body between the hub 14a of the punch tip 14 and the wall 112c of the inner groove 112b of the side wall 122 of the punch body, as shown. In a punch assembly 110 that uses specific components to fix and seat the punch tip 14 (such as the carrier body 128 and wedge member 38), it should be understood that there are design separations for the trigger function and the seating function such that the trigger mechanism 116 is indirectly connected to the punch tip 14, thereby limiting potential crossover effects that could significantly affect the performance of the punch assembly over its lifespan.

[0039] As shown in Figure 2(d), a pressing force PF is applied to the arm portion 116a of the trigger mechanism 116. Thus, the protruding portion 116c of the trigger mechanism 116 is pivoted inward relative to the central cavity 118 of the punch body, and through its contact with the carrier body 128, the carrier body 128 is correspondingly biased inward relative to the cavity 118. This inward positioning of the carrier body 128 is opposed by a spring force SF, which in turn aligns the opening 128c of the carrier body with the deeper portion of the groove 112b in the side wall 122 of the punch body. Thus (and as shown), the larger portion of the wedge member 38 is able to move from the opening 128c of the carrier body into the groove 112b. For this reason, although the punch tip 14 is shown as still attached to the punch body 112, those skilled in the art will understand that the punch tip 14 is about to be driven away from the punch body 112 by a spring force SF2 from the spring 34 via contact from the cap 36. Subsequently, the inner projection 142 holds it in place, and the cap 36, in turn, suspends the wedge member 38 within the opening 128c and groove 112b, allowing the punch tip 14 to be removed.

[0040] Subsequently, in order to connect and seat the punch tip 14 to the punch body 112, the user simply inserts and returns the punch tip hub 14a into the central cavity 140 of the carrier body without any action being applied to the trigger mechanism 116. In certain embodiments, the hub 14a is inserted beyond the wedge member 38 until it contacts the projection 142 in the cavity 140. By applying sufficient inward force to the punch tip 14 or its hub 14a, the carrier body 28 moves further into the cavity 140 and contacts the spring 32. In certain embodiments, such an inward force needs to be greater than the SF of the spring 32. As already described, it should be understood that when the spring 32 is compressed, the trigger mechanism 116 is correspondingly rotated inward to its "operated" position (via the link between the carrier body 128 and the projection 116c of the trigger mechanism 116). For that purpose, the subsequent release of the inward force on the punch tip 14 causes the trigger mechanism 16 to move to its "deactivated" position (carrier body 128 and trigger mechanism When a spring force SF is applied to 116, the carrier body 128 returns to its shallower position within the central cavity 118 of the punch body. Correspondingly, the wedge member 38 is displaced from the deeper portion of the groove 112b (through contact with the surrounding wall of the carrier body 128 that defines the opening 128c), and correspondingly returns to their positions within the opening 128c and groove 112b of the carrier body, as shown in Figure 2B.

[0041] Figures 2AA to 2DD relate to an embodiment of punch assembly 110' provided in an "A" station configuration, although the design is similar to that of assembly 110 shown in Figures 2A to 2D, as referenced above. As will be recognized, due to the different assemblies, but also based on design similarity, the reference numbers in Figures 2AA to 2DD are provided as subsequent iterations of the elements used in Figures 2A to 2D. In general, the main differences between punch assembly 110 and 110' are similar to those already described with respect to punch assembly 10 and 10' in Figures 1A and 1AA, and therefore no further explanation is provided.

[0042] Figure 3A shows a perspective view of a further punch assembly 210 provided in a "B" station configuration according to one embodiment of the present invention. Similar to the punch assemblies 10 and 110 in Figures 1A and 2A, the punch assembly 210 is shown to include a punch body 212 having a trigger mechanism 216 used to actuate either the locking or release of the punch tip 14 relative to the body 212. To this end, the punch assembly 210 has similar features (similar functions at the ends) to those already described for the punch assemblies 10 and 110. For example, similar to the trigger mechanisms 16 and 116 in Figures 1A and 2A, respectively, the trigger mechanism 216 is operably coupled to the punch body 212, but the coupling allows the trigger mechanism 216 to be selectively moved relative to the punch body 212, through which the trigger mechanism 216 brings into a state for holding or releasing the punch tip 14 relative to the punch body 212.

[0043] Moving on to Figures 3B and 3C, which show a cross-sectional view and an exploded view of the punch assembly 210, respectively, many of the structural distinctions (compared to punch assemblies 10 and 110) relate to the punch body 212, the trigger mechanism 216, and related features. Starting with the punch body 212, it has a side wall 222 that defines a central cavity 218, in which the punch tip 14 is fixed to the body 212. The trigger mechanism 216 is configured to pass through an opening 220 in the side wall 222 of the punch body, as shown, and thus extend into the central cavity 218 of the punch body 212. As shown, in certain embodiments, the side wall 222 of the punch body is defined by a channel 224 that is dimensioned to hold the trigger mechanism 216, and the channel 224 further defines an opening 220 that is in fluid communication with the central cavity 218 of the punch body. In a particular embodiment as illustrated, the channel 224 is dimensioned such that the trigger mechanism 216 is embedded within it when it is in the “non-operational” configuration, as shown in Figures 3A and 3B. Thus, by holding the mechanism 216 within the channel 224 (and therefore not affecting the external shape of the punch body), the punch assembly 210 is better equipped for use with the punch guide, as already described.

[0044] Similar to trigger mechanisms 16 and 116, the trigger mechanism 216 is independently molded such that when the mechanism 216 is moved, it can initiate the operation of other auxiliary components within the punch body 212. For example, as shown with reference to Figures 3B, 3C, and 3D, the trigger mechanism 216 is molded as a joint clip / cam having an arm portion 216a, an elbow portion 216b, and a projection portion 216c. To this end, the arm portion 216a and the projection portion 216c are operably coupled, for example, at the elbow portion 216b via the pin 226, such that the arm portion 216a is selectively rotatable about the pin 226, further torsionable relative to the punch body 212 (and its opening 220), and rotates the projection portion 216c in correspondence with the end. In certain embodiments as illustrated, the projection 216c is formed as a rod-shaped body, dimensioned to extend from one side of the side wall 122 to the other, and when housed in the opening 220, it provides uniform rigidity over the longitudinal range of the projection 116c. In certain embodiments, the front end of the projection 116c may be configured to be operably coupled (via a threaded screw) to the other side of the side wall 122 (e.g., a female thread may be cut) so as to fix the trigger mechanism 216 to the punch body 212 while also allowing rotation of the projection 116c. It should be understood that various coupling mechanisms can be used, along with the front end of the projection 116c, to couple the mechanism 216 to the side wall 122 but to allow its rotation relative to the side wall 122.

[0045] Another auxiliary component of the holding / releasing system may include a coupling mechanism that is held within the punch body 212 and directly coupled to the trigger mechanism 216. In a particular embodiment shown, the coupling mechanism may include a carrier body 228. Referring to Figures 3B and 3C, the carrier body 228 is inserted into the central cavity 218 of the punch body and is defined by a hole 230 configured to align with an opening 220 in the side wall 222 of the punch body 212. Thus, when inserted into the channel 224, the trigger mechanism 216 (in particular its protruding portion 216c) is configured to pass further through the opening 220 into the hole 230 of the carrier body. As already described for assemblies 10 and 110, this coupling of the carrier body 228 and the trigger mechanism 216 allows for the corresponding movement of the body 228 from the movement of the mechanism 216.

[0046] Other auxiliary components that enable the punch tip 14 to alternately lock or release from the punch body 212 include one or more elastic members (e.g., springs 32 and / or 34), a cap 36, and a plurality of wedge members 38, similar to those already described for assemblies 10 and 110. Therefore, the following description of the components for the punch assembly 210 in Figure 3A is limited.

[0047] Referring to Figures 3B, 3C, and 3D, the movement of the carrier body 228 is directed by the movement of the trigger mechanism 216 (and the corresponding movement of the projection 216c). In particular, the arm portion 216a of the trigger mechanism 216 is lifted (at the end opposite to the elbow portion 216b), and in turn rotates the projection 216c relative to the central cavity 218 of the punch body. As the projection 216c rotates, its projection side 216cc rotates toward the spring 32, and as a result, the carrier body 228 is correspondingly biased to a deeper position within the cavity 218, away from the front end 212a of the punch body 212. Such a deeper positioning of the carrier body 228 is best shown in Figure 3D, which probably represents an "unlocked" (or "released") state for the punch body 212 relative to the punch tip 14. Conversely, when the trigger mechanism 216 returns to its "deactivated" position (thereby rotating the arm portion 216a and pushing it back into its concave configuration within the sidewall channel 224), the projection portion 216c is similarly rotated so that its projection side 216cc moves away from the spring 32. Correspondingly, the carrier body 228 is moved toward the front end 212a of the punch body 212 and to a shallower position within the cavity 218 of the punch body. Such a shallower positioning of the carrier body 228 is best illustrated in Figure 3B, which perhaps represents a "locked" (or "held") state for the punch body 212 relative to the punch tip 14.

[0048] In summary, the trigger mechanism 216 is configured such that its arm portion 216a is lifted and rotated (to rotate the corresponding projection portion 216c) relative to the side wall 222 of the punch body, thereby activating auxiliary components of the holding / releasing system and providing the punch body 212 in an "unlocked" state. It should be understood that the lifting and rotation of the arm portion 216a is a tool-less operation, meaning that no tools are required. For this reason, the operation can be easily performed, for example, using the user's fingers and thumb. In certain embodiments, as shown in the figures, the side wall 222 is defined to have a recess 244 for accommodating the end of the arm portion 216a to be actuated upon, into which a person can insert their fingertips to scoop up the arm portion 216a.

[0049] The alternating movement (or positioning) of the carrier body 228 within the central cavity 218 of the punch body corresponds to fixing or releasing the punch tip 14 relative to the punch body 212, a process already described for both the punch bodies 12 and 112. Therefore, the following relevant description with respect to these components for the punch assembly 210 of Figure 3A is limited. Perhaps best shown in Figures 3B, 3C, and 3D, the wedge member 38 is positioned to accommodate the wedge member 38 in correspondence between a plurality of corresponding openings 228c within the carrier body 228 and corresponding grooves 212b defined within the side wall 222 of the punch body 212 (outside the openings 228c). In certain embodiments, at least three wedge members 38 are used, and the grooves 212b are defined to be continuous around the inner surface of the side wall 222.

[0050] Beginning with Figure 3B, the punch body 212 is shown with the punch tip 14 fixed thereto. For this reason, as shown, the trigger mechanism 216 is in a "deactivated" position, corresponding to the punch body 212 being "locked" to the punch tip 14. In certain embodiments, as shown, when the trigger mechanism 216 is in the "deactivated" position, the arm portion 216a contacts the side wall 222 of the punch body, and the arm portion 216a is held within the channel 224. Continuing with the trigger mechanism 216 in the "deactivated" position, the spring force SF biases the carrier body 228 to its shallowest position within the cavity 218 of the punch body. In such a position of the carrier body 228, the wedge member 38 is engaged, as shown, within the opening 228c of the carrier body between the hub 14a of the punch tip 14 and the wall 212c of the inner groove 212b of the side wall 222 of the punch body.

[0051] Moving to Figure 3D, the arm portion 216a of the trigger mechanism 216 is lifted and rotated around the punch body 212 (for example, counterclockwise). Thus, the protruding portion 216c of the trigger mechanism 216 is rotated relative to the spring 32, and the carrier body 228 is biased inward relative to the cavity 218 via the corresponding compression of the spring 32 (through the protruding side 216cc). This inward positioning of the body 228 is counteracted by the spring force SF of the spring 32, which in turn aligns the opening 228c of the carrier body with the deeper portion of the groove 212b in the side wall 222 of the punch body. Thus (and as shown in the figure), the larger portion of the wedge member 38 is able to move from the opening 228c of the carrier body into the groove 212b. For this reason, the punch tip 14 is shown still attached to the punch body 212, but those skilled in the art will understand that the punch tip 14 is about to be driven away from the punch body 212 by the spring force SF2 from the spring 34 via contact from the cap 36. Thereafter held in place by the inner projection 242, the cap 36, in corresponding, suspends the wedge member 38 within the opening 228c and groove 212b, and the punch tip 14 is removed.

[0052] Next, in order to connect and seat the punch tip 14 to the punch body 212, the user needs to lift and rotate the arm portion 216a (and correspondingly rotate the protruding portion 216c), and then insert the punch tip hub 14a into the central cavity 240 of the carrier body and move it beyond the wedge member 38. For this purpose, in certain embodiments, the protruding portion 242 can act as a stopper for a guaranteed insertion depth for the punch tip hub 14a. Alternatively, the cap 36 can bottom out in the cavity 240 of the carrier body (via an inward force from the punch tip 14) and act as a stopper for the punch tip hub 14a. The carrier body 228 is then returned to a shallower position in the central cavity 218 of the punch body by rotating the arm portion 116a and pushing it back into its side wall recess. In response, the wedge member 38 moves out from the deeper portion of the groove 212b through the opening 228c of the carrier body (and into contact with the surrounding wall of the carrier body 228 that defines the opening 228c), and in response, moves back to their positions in the opening 228c and groove 212b, as shown in Figure 3B. It should be understood that the punch assembly 210 requires the initial activation of its trigger mechanism 216 for the punch tip 14 to be connected to the punch body 212, while assemblies 10 and 110 in Figures 1A and 2A do not require such activation, respectively. For this purpose, each of assemblies 10, 110, and 210 offers advantages, some of which are present throughout, and others which are associated with one or more of the assemblies. For example, while the punch tip 14 requires action to be coupled, the punch assembly 210 provides more protection to assemblies 10 and 110 than assemblies 10 and 110, via accidental activation of the trigger mechanism 216, because the assembly 210 directs two separate actions (lifting and rotating) for such action.

[0053] Figures 3A to 3DD relate to an embodiment of punch assembly 210' provided in an "A" station configuration, although the design is similar to that of assembly 210 shown in Figures 3A to 3D, as detailed above. As recognized, due to different assemblies, but also based on design similarity, the reference numbers in Figures 3A to 3DD are provided as subsequent iterations of the elements used in Figures 3A to 3D. Regarding the main differences between punch assembly 210 and 210', punch assembly 210' has a longer range, and correspondingly increases the range of many of its components, including the punch body 212' and tip 14', as well as the carrier body 228' and cap 36'. Also, punch assembly 210' has a thinner profile so that the number of wedge members 38' can be reduced (to two) while still providing an effective fixing and seating function of the punch body 212' for the punch tip 14'. Furthermore, the fastener 36a' for the cap 36' (for holding the cap 36' in the carrier body 228') is located approximately midway along the side wall of the cap (as opposed to the bottom edge 36 for the cap 36) to hold the cap 36' within the carrier body 28' via contact with the inner projection 242'. Finally, in Figure 3DD, the punch assembly 210' is shown following the initial lifting force LF used with the arm portion 216a' of the trigger mechanism 216', but the arm portion 216a' has not yet rotated. Thus, the punch body 212' still appears to be in a "locked" state relative to the punch tip 14. Viewing Figure 3D sequentially, the punch assembly 210 is shown following the rotation of the arm portion 216a (and the corresponding rotation of the projection portion 216c), thereby positioning the punch body 212 in an "unlocked" state (as already described).

[0054] Figure 4 is a flowchart of the steps for securing a punch tip to a punch body for a punch assembly according to one embodiment of the present invention. It should be understood that the flowchart may relate to the punch body and punch tip shown in any of Figures 1A, 1AA, 2A, 2AA, 3A, and 3A of this specification. However, the steps in the flowchart are illustrated with reference to the punch body 12, punch tip 14, and auxiliary components shown in Figure 1A.

[0055] Step 300 of the flowchart includes first providing the punch body 12. As already detailed above, the punch body 12 defines a central cavity 18 that extends along the longitudinal range of the punch body 12. The punch body 12 includes a trigger mechanism 16, a coupling mechanism (carrier body 28), and a holding / releasing system having an elastic member (e.g., a spring 32). The carrier body 28 is seated in the central cavity 18 of the punch body, and the trigger mechanism 16 connects the punch body 12 and the carrier body 28 via aligned openings 20 and holes 30.

[0056] Step 302 includes preparing the punch body 12 so that the punch tip 14 can be connected to the punch body. For this step, the punch body 12 needs to be in an "unlocked" state so that the connecting mechanism is in a first position within the central cavity 18 of the punch body and the wedge member 38 is unlocked within the cavity 18. Step 304 includes moving the connecting mechanism to a position within the cavity 18 of the punch body (i.e., a second position) so that the wedge member 38 is locked within the cavity 18. Finally, the wedge member 38 is locked between the punch tip hub 14a and the side wall 22 of the punch body within the opening 28c of the carrier body 28.

[0057] Furthermore, in steps 302 and 304, and in certain embodiments relating to the punch assemblies of Figures 1A(10) and 2A(110), it is not necessary to act on the trigger mechanisms 16, 116. For example, as already described for the resulting punch assembly, the inward positioning of the punch tip 14 relative to the punch bodies 12, 112 (and their central cavities 18, 118) results in contact between the punch tip hub 14a and the carrier bodies 28, 128 (i.e., their inner projections 42, 142). If the force behind the inward movement of the punch tip 14 is greater than the spring force SF of the spring 32, the carrier bodies 28, 128 may be directed (from the first position) to a first position (i.e., a deeper inner position) within the central cavities 18, 118 of the punch bodies in order to unlock the wedge member 38. Therefore, in step 302 for preparing the punch bodies 12 and 112, the punch tip 14 can be attached thereto, and the punch tip 14 is oriented inward relative to the punch bodies 12 and 112.

[0058] Next, with respect to a specific embodiment of the punch assembly in Figures 1A(10) and 2A(110), with respect to step 304, and when moving the coupling mechanism (carrier bodies 28, 128) to a position corresponding to the "locked" state of the punch bodies 12, 112, the force behind the inward movement of the punch tip 14 can be simply removed. With such release, the spring force SF of the spring 32 automatically drives the carrier bodies 28, 128 in the central cavities 18, 118 of the punch body from a second position to a first position (i.e., an outward, shallower position), locking the wedge member 38 in a position between the punch tip hub 14a and the side walls 22, 122 of the punch body, and correspondingly directing the punch tip 14 to lock into the punch bodies 12, 112.

[0059] Alternatively, in a particular embodiment for the punch assembly of Figure 3A(210), each of steps 302 and 304 requires that the trigger mechanism 216 be acted upon. To this end, preparing the punch body 212 so that the punch tip 14 can be coupled to the punch body (in step 302) may involve moving the trigger mechanism 216 to its “actual” position with a finger and thumb (raising and rotating it), so that the coupling mechanism (carrier body 228) is directed (from the first position) to a first position (i.e., a deeper inner position) in the central cavity 218 of the punch body to unlock the wedge member 38. To this end, step 302 subsequently includes inserting the punch tip 14 into a position in the central cavity 218 of the punch body (and correspondingly in the central cavity 240 of the carrier body) to be coupled to the punch body 212. Compared to step 304, when moving the coupling mechanism (carrier body 228) to a position corresponding to the “locked state” of the punch body 212, the trigger mechanism 216 is simply returned to its “non-operating” position (via corresponding rotational and pressing movements). The carrier body 228 is then returned (from the second position) to the first position (i.e., the outward-facing shallow position) within the central cavity 218 of the punch body, locking the wedge member 38 between the punch tip hub 14a and the side wall 222 of the punch body, and accordingly locking the punch tip 14 into the punch body 212.

[0060] In the detailed description above, the present invention has been described with reference to specific embodiments. However, it should be understood that various improvements and modifications can be made without departing from the scope of the invention as described in the appended claims. The following are some embodiments (configurations) of the present invention. [Aspect 1] The punch itself, A side wall that defines a central cavity, the central cavity extending along the longitudinal range of the punch body, A holding / releasing system comprising a trigger mechanism, a coupling mechanism, and an elastic member, wherein the trigger mechanism is accessible on the side wall of the punch body and adjustable by hand relative to the side wall, the trigger mechanism connects the punch body and the coupling mechanism, and the elastic member in the central cavity of the punch body is arranged to elastically resist adjustment of the trigger mechanism, When finger force is applied to the trigger mechanism, the coupling mechanism moves from a first position within the central cavity of the punch body to a second position corresponding to the unlocked state of the punch body relative to the punch tip. The elastic member moves the coupling mechanism to a first position as the force of the finger is removed and the trigger mechanism returns to its elastically biased state, the first position of the coupling mechanism corresponding to the locked state of the punch body relative to the punch tip, the punch body. [Aspect 2] The punch body according to embodiment 1, wherein the trigger mechanism is formed as a lever and is operably coupled to the side wall via a pin, and the trigger mechanism is rotatable around the pin. [Aspect 3] The punch body according to embodiment 2, wherein the trigger mechanism has an arm portion and a protruding portion, the arm portion is configured to receive the force of the finger, and when the force of the finger is applied, the protruding portion moves the connecting mechanism, and the elastic member is correspondingly compressed by the connecting mechanism in the central cavity of the punch body. [Aspect 4] The punch body according to embodiment 3, wherein the first position of the connecting mechanism is relatively shallower within the central cavity of the punch body than the second position. [Aspect 5] The punch body according to embodiment 2, wherein the trigger mechanism has an arm portion, the arm portion is configured to receive the force of the finger, the force of the finger is directed in a single direction, and the single finger can provide the force. [Aspect 6] The punch body according to embodiment 3, wherein the side wall of the punch body defines a channel in which the trigger mechanism is located, and the channel includes a recess for accommodating a single finger when directing the force of the finger towards the arm portion. [Aspect 7] The punch body according to embodiment 6, wherein the finger force is a lifting force, and the recess is sized to receive a fingertip for scooping up and lifting the arm portion from the recess. [Aspect 8] The punch body according to embodiment 1, wherein the trigger mechanism is arranged on the side wall of the punch body so as to extend parallel to the longitudinal axis of the punch body, and the movement of the connecting mechanism is also parallel to the longitudinal axis. [Aspect 9] The punch body according to embodiment 1, wherein the elastic member is a spring. [Aspect 10] The punch body according to embodiment 1, wherein the coupling mechanism comprises a carrier body, the carrier body having a central cavity that is dimensioned to release the hub of the punch tip when in the second position and to lock the hub of the punch tip when in the first position. [Aspect 11] The punch body according to embodiment 10, wherein the carrier body has a side wall defined to have a plurality of openings configured to support a plurality of corresponding wedge members, the plurality of wedge members pass between the openings and grooves in the side wall of the punch body as the carrier body moves from a first position to a second position, and vice versa. [Aspect 12] The punch body according to embodiment 11, wherein the plurality of wedge members are fixed between the wall of the opening of the carrier body and the groove at the first position. [Aspect 13] The punch body according to embodiment 11, wherein the plurality of wedge members move freely from the opening of the carrier body into the groove at the second position. [Aspect 14] The punch itself, A side wall that defines a central cavity, the central cavity extending along the longitudinal range of the punch body, A holding / releasing system comprising a trigger mechanism, a coupling mechanism, and an elastic member, wherein the trigger mechanism is accessible on the side wall of the punch body and adjustable by hand relative to the side wall, the trigger mechanism connects the punch body and the coupling mechanism, and the elastic member is located below the coupling mechanism within the central cavity of the punch body, The trigger mechanism has an arm portion and a protruding portion, the arm portion is configured to receive the force of one or more fingers, and when finger force is applied, the protruding portion moves the connecting mechanism. The arm portion in the first position corresponds to the connecting mechanism located in a relatively shallow position within the central cavity of the punch body, which corresponds to the locked state of the punch body relative to the punch tip. The arm portion in the second position corresponds to the punch body, which is located in a relatively deep position within the central cavity of the punch body, corresponding to the unlocked state of the punch body relative to the punch tip. [Aspect 15] The punch body according to embodiment 14, wherein the arm portion is configured to receive the force of only a single finger, and the single finger is capable of providing the force. [Aspect 16] The punch body according to embodiment 15, wherein the force of the single finger is directed in a single direction, and when the force of the single finger is applied, the coupling mechanism moves from the relatively shallow position to the relatively deep position, and correspondingly the elastic member is compressed by the coupling mechanism in the central cavity of the punch body. [Aspect 17] The punch body according to embodiment 16, wherein the elastic member moves the coupling mechanism to the relatively shallow position upon removal of the force of the single finger, and the trigger mechanism returns to a setting elastically biased against the side wall of the punch body. [Aspect 18] The punch body according to embodiment 15, wherein the side wall of the punch body defines a channel in which the trigger mechanism is located, and the channel includes a recess for accommodating the single finger when directing the force of the single finger toward the arm portion. [Aspect 19] The punch body according to embodiment 18, wherein the force of the single finger is a lifting force, and the recess is sized to receive a fingertip for scooping up and lifting the arm portion from the recess. [Aspect 20] The punch body according to embodiment 18, wherein the force of the single finger is a pressing force, and the recess is sized to accommodate the pressed-down arm portion. [Aspect 21] The punch body according to embodiment 14, wherein the coupling mechanism comprises a carrier body, the carrier body having a central cavity, the carrier body being dimensioned to release the hub of the punch tip when in the second position and to lock the hub of the punch tip when in the first position. [Aspect 22] A method for fixing a punch tip to the punch body, a) A step of providing a punch body, wherein the punch body has side walls defining a central cavity extending along the longitudinal direction of the punch body, the punch body comprises a holding / releasing system having a trigger mechanism, a coupling mechanism, and an elastic member, the coupling mechanism seating in the central cavity of the punch body, and the trigger mechanism coupling the punch body and the coupling mechanism, (b) The step of preparing the punch body to which the punch tips are connected, (c) The step of moving the coupling mechanism to a position corresponding to the locked state of the punch body, Methods that include... [Aspect 23] The method according to embodiment 22, wherein the step of preparing the punch body includes inserting the punch tip into the punch body with sufficient force by hand in order to deflect the elastic member and move the coupling mechanism from a first position in the central cavity of the punch body to a second position corresponding to the unlocked state of the punch body and the appropriate position of the punch tip within the punch body fixed to the punch body. [Aspect 24] The method according to embodiment 23, wherein the step of moving the coupling mechanism to a position corresponding to the locked state of the punch body includes the step of releasing the force of the hand from the punch tip. [Pattern 25] The method according to embodiment 22, wherein the step of preparing the punch body comprises the step of applying the force of one or more fingers to the trigger mechanism, thereby moving the coupling mechanism from a first position in the central cavity of the punch body to a second position corresponding to the unlocked state of the punch body. [Aspect 26] The method according to embodiment 25, wherein the trigger mechanism has an arm portion and a protruding portion, the arm portion is configured to receive the force of one or more fingers, the arm portion corresponds to the protruding portion moving the coupling mechanism when force is applied, and the elastic member is compressed by the coupling mechanism in the central cavity of the punch body. [Aspect 27] The trigger mechanism has an arm portion and a protruding portion, the arm portion is configured to receive the force of one or more fingers, and when force is applied, the protruding portion moves the connecting mechanism. In the first position, the arm portion is located in a relatively shallow position within the central cavity of the punch body, corresponding to the locked state of the punch body relative to the punch tip of the connecting mechanism. The method according to embodiment 25, wherein the arm portion in the second position is located in a relatively deep position within the central cavity of the punch body, corresponding to the state in which the connecting mechanism is not locked to the punch tip. [Aspect 28] The method according to embodiment 22, wherein the coupling mechanism comprises a carrier body, the carrier body having a plurality of openings, each of which is configured to accommodate one of a plurality of wedge members, and the movement of the carrier body within the central cavity of the punch body causes the plurality of wedge members to move in relation to corresponding grooves defined on the inner surface of the side wall of the punch body.

Claims

1. The punch itself, A side wall that defines a central cavity, the central cavity extending along the longitudinal range of the punch body, A holding / releasing system comprising a trigger mechanism, a coupling mechanism, and an elastic member, wherein the trigger mechanism is accessible on the side wall of the punch body and adjustable by hand relative to the side wall, the trigger mechanism connects the punch body and the coupling mechanism, and the elastic member in the central cavity of the punch body is arranged to elastically resist adjustment of the trigger mechanism, When finger force is applied to the trigger mechanism, the coupling mechanism moves from a first position within the central cavity of the punch body to a second position corresponding to the unlocked state of the punch body relative to the punch tip. The elastic member moves the coupling mechanism to a first position as the force of the finger is removed and the trigger mechanism returns to its elastically biased state, and the first position of the coupling mechanism corresponds to the locked state of the punch body relative to the punch tip. The trigger mechanism is formed as a lever and is operably coupled to the side wall via a pin, and the trigger mechanism is rotatable around the pin. The rotation of the trigger mechanism due to the aforementioned force corresponds to the pivoting of the protruding portion of the trigger mechanism relative to the connecting mechanism, in the punch body.

2. The punch body according to claim 1, wherein the trigger mechanism has an arm portion and a protruding portion, the arm portion is configured to receive the force of the finger, and when the force of the finger is applied, the protruding portion moves the connecting mechanism, and the elastic member is correspondingly compressed by the connecting mechanism in the central cavity of the punch body.

3. The punch body according to claim 2, wherein the first position of the connecting mechanism is relatively shallower within the central cavity of the punch body than the second position.

4. The punch body according to claim 1, wherein the trigger mechanism has an arm portion, the arm portion is configured to receive the force of the finger, the force of the finger is directed in a single direction, and the single finger can provide the force.

5. The punch body according to claim 2, wherein the side wall of the punch body defines a channel in which the trigger mechanism is located, and the channel includes a recess for accommodating a single finger when directing the force of the finger towards the arm portion.

6. The punch body according to claim 5, wherein the finger force is a lifting force, and the recess is sized to receive a fingertip for scooping up and lifting the arm portion from the recess.

7. The punch body according to claim 1, wherein the trigger mechanism is arranged on the side wall of the punch body so as to extend parallel to the longitudinal axis of the punch body, and the movement of the connecting mechanism is also parallel to the longitudinal axis.

8. The punch body according to claim 1, wherein the connecting mechanism comprises a carrier body, the carrier body having a central cavity that is dimensioned to release the hub of the punch tip when in the second position and to lock the hub of the punch tip when in the first position.

9. The punch body according to claim 8, wherein the carrier body has a side wall defined to have a plurality of openings configured to support a plurality of corresponding wedge members, the plurality of wedge members pass between the openings and grooves in the side wall of the punch body as the carrier body moves from a first position to a second position, and vice versa.

10. The punch body according to claim 9, wherein the plurality of wedge members are fixed between the wall of the opening of the carrier body and the groove at the first position.

11. The punch body according to claim 9, wherein the plurality of wedge members move freely from the opening of the carrier body into the groove at the second position.

12. The punch body according to claim 5, wherein the force of the single finger is a pressing force, and the recess is sized to accommodate the pressed-down arm portion.

13. A method for fixing a punch tip to the punch body, a) A step of providing a punch body, wherein the punch body has side walls that define a central cavity extending along the longitudinal direction of the punch body, the punch body comprises a holding / releasing system having a trigger mechanism, a coupling mechanism, and an elastic member, the coupling mechanism seated in the central cavity of the punch body, and the trigger mechanism coupling the punch body and the coupling mechanism, (b) A step of preparing the punch body to which the punch tip is connected, wherein the trigger mechanism is formed as a lever and is operably coupled to the side wall via a pin, the trigger mechanism is rotatable around the pin, and the rotation of the trigger mechanism by force corresponds to the pivot of the protruding portion of the trigger mechanism relative to the coupling mechanism, (c) The step of moving the coupling mechanism to a position corresponding to the locked state of the punch body, Includes, A method comprising the steps of preparing the punch body, deflecting the elastic member, moving the coupling mechanism from a first position in the central cavity of the punch body to a second position corresponding to the unlocked state of the punch body, and inserting the punch tip into the punch body by hand with sufficient force so that the punch tip inside the punch body is fixed to the punch body in an appropriate position.

14. The method according to claim 13, wherein the step of preparing the punch body comprises another step of applying the force of one or more fingers to the trigger mechanism, thereby moving the coupling mechanism from the first position to the second position in the central cavity of the punch body.

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