The present disclosure is directed to a key duplication machine and, more particularly, to a key duplication machine having a pivoting clamp for securing key blanks during cutting.
An existing key can be duplicated by measuring a profile of the existing key and copying that profile within a corresponding key blank. The key blank generally has a size and shape larger than the master key, so that the key blank can be machined (e.g., cut and/or milled down) to function like the existing key. During machining, the key blank is mounted into a clamp and held stationary. The measured profile is then used to reproduce a corresponding pattern of notches within the key blank, thereby replicating the existing key.
Conventional clamps found within key making machines include a door that is forced toward a base or anvil, such that a portion of the key blank is sandwiched therebetween. Although the conventional clamps may be adequate for some situations, they can also be problematic. For example, during engagement with the key blank, it may be possible for the door to push the key blank partway out of the key making machine before the key is securely sandwiched between the door and the anvil. When this occurs, the key blank may be machined incorrectly, causing the duplication process to fail.
The disclosed key duplication machine and clamp are directed to overcoming one or more of the problems set forth above and/or other problems of the prior art.
In one aspect, the present disclosure is directed to a clamp for a key making machine. The clamp may include an anvil, and a door movable toward the anvil to sandwich a key blank therebetween. The clamp may also include a gate pivotally connected to the door and configured to engage the key blank.
In another aspect, the present disclosure is directed to a key making machine. The key making machine may include a housing having a first opening configured to receive an existing key, and at least a second opening configured to receive at least one key blank. The key making machine may also include an imaging system located within the housing and configured to capture an edge profile of the existing key, and at least one fabrication module configured to cut the edge profile into the at least one key blank. The key making machine may further include a clamp located within the fabrication module and being configured to secure the at least one key blank during cutting of the edge profile. The clamp may include an anvil, and a door having a T-shaped recess formed at a lower end adjacent the anvil and guide channels formed at opposing sides that are configured to engage the housing. The door may be moveable toward the anvil to sandwich the at least one key blank therebetween. The clamp may also include a gate pivotally connected to the door and configured to engage the at least one key blank. The gate may have a T-shaped frame supported within the T-shaped recess, and a piston extending inward from the gate and configured to engage the at least one key blank. An end surface of the piston may extend a greater distance toward the at least one key blank at an inner edge than at an outer edge.
In yet another aspect, the present disclosure is directed to a method of clamping a key blank within a machine for cutting of notches within the key blank. The method may include receiving the key blank to be cut within the machine, and biasing a door toward a beveled surface of an anvil to sandwich the key blank between a lower edge of the door and the anvil. The biasing causes a gate to pivot and thereby push the key blank further into the machine.
A diagrammatic illustration of machine 10 is provided in
As described above, display 22 may provide queues to the user of machine 10 regarding the key duplication process. These queues may include, among other things, when, where, and how to insert the existing key and the key blanks into machine 10. For example, display 22 may have a graphical user interface (GUI) that shows an image of the outside of machine 10, along with highlighting of the active slot(s) (i.e., slot(s) 24 and/or slot 26) that should be used for key insertion. In another example, controller 40 may correlate images on display 22 with illumination of particular indicator lights 32, thereby guiding the user to the correct slot. Further, a color, intensity, and/or frequency of light illumination may vary based on a degree of key insertion. For example, a particular indicator light 32 could initially illuminate in a red color, attracting the attention of the user to the corresponding slot. Then, as the user inserts the existing key or the key blank into that slot, the particular indicator light 32 could illuminate in a yellow color, followed by green when the key is fully and properly inserted. Other illumination strategies may also be employed.
In some embodiments, display 22 may additionally allow the user to input instructions, make selections, and/or answer questions regarding a desired duplication event. The instructions may include, for example, a number of duplicate keys to be produced, a desired pick-up time, a user's name, a desired delivery address, key identification information, a desire for duplication information to be stored for future reference, etc. The questions asked of the user may include for example, a make, model, and/or year of an associated car that the existing key corresponds with; a type and/or brand of lock to which the existing key belongs; and whether the existing key is a transponder key. The instructions, selections, and/or questions, as well as corresponding responses, may be communicated visually, audibly, and/or tactilely via display 22, as desired. For example, display 22 may be a touch screen and/or include another input device such as a key board, a mouse, a light pen, or a microphone that receives input from the user. Information received via display 22 may be directed to controller 40 for further processing, and controller 40 may respond to the customer via display 22.
Reader 30 may be configured to detect and read an index 42 associated with the key blanks. In one example, each index 42 is a unique barcode printed on a card to which each key blank is affixed, and corresponds with information stored in a memory of controller 40. For example, the barcode could correspond with an identity of the affixed key blank and/or a cost associated with using the affixed key blank in a duplication process. It is contemplated that the barcode (or another index 42) could alternatively be located directly on the key blank, if desired. Signals generated by reader 30 may be directed to controller 40 for comparison of the stored identity with an expected identity of a correct key blank. If the identity associated with index 42 does not correspond with the expected identity of the correct key blank, controller 40 may then cause display 22 to alert the user that the selected key blank is incorrect.
Identification module 34 may be configured to detect, identify, and/or measure distinguishing characteristics of the existing key inserted through slot 24. Although identification module 34 is shown in
An exemplary embodiment of key receiving assembly 44 is shown in
Imaging system 46 may be a vision-based system employing one or more sources of visible and/or invisible light, and a receiver. The receiver may be, for example, a camera 52 that is located to any side of the existing key during imaging. Camera 52 may be configured to capture images of the existing key, while the light sources are selectively turned on and off. In the disclosed example, the light sources are “back lights” 54 configured to shine directly or indirectly toward the existing key from a side opposite (e.g., from below) camera 52. Camera 52, at this time, may capture a silhouette image of the existing key showing an exterior edge outline of the existing key and a location of reference features of the existing key (e.g., of shoulders and/or a tip of the existing key). Signals generated by camera 52 may be directed to controller 40 for further processing.
In another example, imaging system 46 may include one or more “side lights” 56 and/or a laser 58. Side lights 56 may be configured to shine light onto the existing key, one at a time, from an oblique side angle. During activation of each side light 56, camera 52 may be used to generate an image of the existing key showing an interior edge outline of notches milled into a center of the existing key. Laser 58 may be configured to scan the existing key while camera 52 generates one or more transverse stripe images. These additional signals generated by camera 52 may also be directed to controller 40 for further processing.
Each fabrication module 36 may include, among other things, a receiving unit 60, and one or more cutting wheels 62 movable relative to receiving unit 60 via a gantry 64. The key blank retrieved by the user based on image data captured via identification module 34 may be inserted through slot 24 into receiving unit 60. After being accepted by the corresponding receiving unit 60 (e.g., after the shank end of the key blank has passed through slot 24), cutting wheel(s) 62 and gantry 64 may be selectively activated to produce desired features within the key blank.
Receiving unit 60 may have any configuration known in the art for receiving, clamping, and/or positioning the inserted key blank relative to cutting wheels 62. In one embodiment, receiving unit 60 includes jaws that are spring-biased toward each other to sandwich the key blank there between, and/or a clamp that is movable to secure the key blank once positioned. In some embodiments, a sensor may be used to measure a shank length of the key blank during insertion, the length being subsequently used by controller 40 as a way to confirm proper placement of the key blank. Once the key blank has been placed at a desired cutting location, the clamp may be actuated to push down on only the key blank. Thereafter, the jaws may be completely withdrawn from the key blank, exposing the shank of the key blank to cutting wheels 62.
Cutting wheels 62 may be used to make notches in one or both shank edges of the key blank. During fabrication of the notches, one or more motors connected to cutting wheels 62 may be selectively activated, and a lead screw of gantry 64 may be driven in an X-direction to move cutting wheels 62 into and out of the shank along the length or Y-direction of the key blank. The amount of movement in the X-direction at a given position in the Y-direction may be controlled based on the pattern of existing notches measured in the existing key by identification module 34. For a singled-edge key, only one of cutting wheels 62 may be used at one side of the key blank. For a dual-edge key, both cutting wheels 62 may be used at the same time or at different times to create notches in opposing sides of the key blank. It is contemplated that some fabrications modules 36 may have only one cutting wheel 62, while other fabrication modules 36 may include the two cutting wheels 62 described above. In particular, some systems may be designed to cut only a single edge into a key blank, while other systems may be designed to cut dual edges. In fact, it may be possible for a single fabrication module 36 to include both types of systems. Any configuration may be possible.
As discussed above, it may be possible for the existing key that the user wishes to duplicate to be embedded with or otherwise include a transponder that enables activation of an associated lock (e.g., an ignition lock in a vehicle). In these situations, it may be desirable to code a new duplicate key (i.e., the key blank notched by machine 10) to match the existing key with the same transponder code to ensure that the duplicate key functions in the same manner as the existing key. In the disclosed embodiment, the transponder code in the existing key can be detected and read at sensor/cloner 38. And after fabricating notches into the shank of the appropriate key blank, the same code may be cloned within the transponder of the new key at sensor/cloner 38. In the disclosed embodiment, sensing and cloning are performed by the same device and at the same location on machine 10. It is contemplated, however, that different devices located together or separately may alternatively be used to perform these functions, if desired.
Controller 40 may embody a single microprocessor or multiple microprocessors that include a means for controlling operations of machine 10. Numerous commercially available microprocessors can be configured to perform the functions of controller 40. Controller 40 may include all the components required to run an application such as, for example, a memory, a secondary storage device, and a processor, such as a central processing unit or any other means known in the art for controlling display 22, reader 30, indicator lights 32, identification module 34, fabrication module(s) 36, and transponder sensor/cloner 38. Various other known circuits may be associated with controller 40, including power supply circuitry, signal-conditioning circuitry, solenoid driver circuitry, communication circuitry, switching circuitry, and other appropriate circuitry.
In some embodiments, machine 10 may also include a means for receiving payment from the user. These means may include, for example, a coin operated mechanism, a bill receiver, a credit card reader, and/or a receipt reader (e.g., a barcode reader configured to recognize a previous payment having already been received at another location and/or time). The means for receiving payment may be located anywhere on machine 10, and be capable of directing signals associated with the payment to controller 40 (or elsewhere) for further processing.
As seen in
Clevis 78 may function as a pivot bracket for pivotally connecting gate 80 to base 77 via pin 79. In particular, clevis 78 may include a mounting plate 94 having an upper surface 95 configured to engage an underside of shelf 90, and two integral and spaced-apart tabs 96 that extend downward in a vertical direction from a lower surface 97. Mounting plate 94 may be connected to shelf 90 by way of one or more fasteners 98. Pin 79 may pass transversely through holes 100 formed within tabs 96 and also through a corresponding hole 102 formed in gate 80, to thereby allow gate 80 to pivot relative to clevis 78 and base 77 about pin 79.
Gate 80 may have a generally T-shaped frame 104 configured to fit with the upside-down T-shaped recess 88 of base 77, such that gate 80 may translate vertically with base 77 under the influence of motor 70 and/or levers 76 (referring to
Piston 106 may have a generally rectangular cross-section and be configured to engage a portion of the inserted key blank during the pre-machining clamping described above. In particular, the cross-section of piston 106 may have a length direction and a width direction, and the length direction may be generally aligned with a shank of the key blank when it is inserted into slot 24 below piston 106. A lower horizontal surface 108 of piston 106, which is configured to engage the key blank, may not be perfectly perpendicular relative to vertical surfaces of gate 80 and/or base 77. In particular, the lower surface may be beveled slightly, such that a distal inner edge of the cross-section of piston 106 extends downward farther than an outer edge adjacent base 77. With this configuration, the downward motion of gate 80 may cause the inner edge to engage the key blank first, thereby creating a counter-clockwise moment about pin 79 (counter-clockwise relative to the perspective of
The disclosed key making machine 10 may allow for greater precision in the key making process. In particular, the disclosed clamp may help to ensure proper positioning of a key blank prior to cutting of notches within the key blank. In addition, the disclosed clamp may provide a secure hold on the key blank during cutting.
To begin the duplication process, a customer or sales associate may insert an existing key of any configuration through slot 26 of identification module 34. In some embodiments, this action may be the very first action taken in the process and, by initiating this action, wake (i.e., trigger activation of) the associated machine 10. As the existing key is inserted through slot 26, the head of the existing key may engage the beveled surfaces of slot 26, while the tip of the existing key engages guide 50. At this time, movement of the existing key in through slot 26 may cause the tip of the existing key to push guide 50 away from slot 26. This motion may continue until the head of the existing key is seated properly inside of the mouth of slot 26. This engagement may cause the head of the existing aster key to align with guide 50 in preparation for imaging.
After the shank of the existing key is inserted into identification module 34, camera 52 may be triggered to capture one or more images of only the shank of the existing key. The images, as described above, may include a backlight image, one or more sidelight images, and/or a laser scan image. These images may show a location of the tip of the key, a profile of the shank, and a location of shoulders at a base of the key's head (if shoulders are present).
Based on the backlight image (i.e., based on the silhouette of the existing key), it may be determined if the existing key is an edge-cut key, a side-mill key, or in some embodiments simply a key that cannot be duplicated with machine 10. In one example, these determinations may be made based on the edge profile of the existing key, as captured in the backlight image. Specifically, if the edge profile is a straight profile, then it may be classified as a side-mill key. Otherwise, it may be classified as an edge cut key. In another example, the master key may be identified as a particular one of a plurality of known keys (e.g., key #66) and, based on the identification, reference a lookup map stored in memory to determine the class of key (edge-cut or side-mill) that it is and if it can be duplicated by machine 10. The backlight image, when the existing key is an edge cut key, may also be used to measure a profile of the biting edge(s) of the key. It is contemplated that, in some embodiments, the step of determining the type of key inserted into identification module 34 may be omitted, and machine 10 may be capable of cutting only one type of key (e.g., only edge cut keys).
When it is determined that the existing key is an edge-cut key, the laser scan image may be used to identify and/or measure a channel profile of the existing key (i.e., the shapes, sizes, and/or locations of channels) in a manner known in the art. In some embodiments, capturing of the laser scan image may only be made after determination that the existing key is an edge-cut key. In other embodiments, the laser scan image may always be captured.
When it is determined that the existing mater key is a side-mill key, the sidelight images may be used together to determine the side-mill profile of the existing key. In particular, each side light may be selectively turned on, one at a time, to capture an inner edge profile. Specifically, by shining the side light across the surface of the existing key, a shadow may be created. By capturing an image at this time, a pattern at a surface of existing key becomes visible. As with the laser-scan image described above, it is contemplated that the sidelight images may always be captured by identification module 34 or only captured in response to classification of the existing key as a side-mill key.
The customer and/or associate may be instructed (e.g., via display 22) to retrieve the appropriate key blank and then insert the retrieved key blank into slot 24 of fabrication module 36. As the shank of the appropriate key blank is being inserted by slot 24 of fabrication module 36, the key blank may be mechanically aligned by the insertion. In some embodiments, an identity of the key blank may first be confirmed (e.g., via interpretation of index 42 by reader 30) prior to insertion of the key blank into slot 24. If an inconsistency is detected at this point in time, the process may be prematurely halted.
It is contemplated that the identity of the key blank inserted into fabrication module 36 may be confirmed without use of index 42, if desired. For example, it may be possible to determine the identity of some key blanks based on characteristics of their heads (e.g., an outer profile, an eyelet shape, etc.). It is also contemplated that these characteristics could be used in conjunction with index 42 and/or a measured length of the key blank, if desired.
Once the correct key blank has been properly placed through slot 24, motor 70 may rotate cam lobe 73 to release door assembly 68, base 77 and gate 80 to move downward toward anvil 72 and sandwich the key blank therebetween. As gate 80 moves downward, the inner edge of piston surface 108 may engage the head of the key blank first. Because of the angled nature of surface 108, further downward movement may generate a moment about pin 79, causing piston 106 to pivot inward until motion limiters 107 engage corresponding features of base 77. This pivoting motion of piston 106 may function to force the key blank further inward into fabrication module 36, just prior to the key blank being fully secured by clamp 66. Precision cutting of the key blank may then begin.
It will be apparent to those skilled in the art that various modifications and variations can be made to the disclosed key making machine and clamp. Other embodiments will be apparent to those skilled in the art from consideration of the specification and practice of the disclosed key making machine and clamp. It is intended that the specification and examples be considered as exemplary only, with a true scope being indicated by the following claims and their equivalents.
This application is a continuation application under 35 U.S.C. § 120 of U.S. patent application Ser. No. 16/564,358, filed Sep. 9, 2019, which is a continuation application of U.S. patent application Ser. No. 15/699,610, filed Sep. 8, 2017, which claims priority under 35 U.S.C. § 119 to U.S. Provisional Patent Application No. 62/393,905, filed on Sep. 13, 2016, the contents of all of which are expressly incorporated herein by reference in their entireties.
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Number | Date | Country | |
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20200246885 A1 | Aug 2020 | US |
Number | Date | Country | |
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62393905 | Sep 2016 | US |
Number | Date | Country | |
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Parent | 16564358 | Sep 2019 | US |
Child | 16855275 | US | |
Parent | 15699610 | Sep 2017 | US |
Child | 16564358 | US |