Abstract
The present disclosure relates to a grip jaw structure with characteristics as follows: a cam disk is driven by a rotary motor; two transmission shafts are driven through two slotted guideways in the cam disk; lubricants inside the slotted guideways adhere to a plurality of bearings in which the transmission shafts in the slotted guideways are inserted when the transmission shafts are shifted; sliders between which a workpiece is clamped are driven to be shifted by the transmission shafts along linear rails at the top of the framework for stresses sustained and dispersed by bearings.
Claims
1. A grip jaw structure, which is characteristic of: a cam disk, which is driven by a rotary motor fixed under a framework such that two transmission shafts inside two slotted guideways of said cam disk are shifted correspondingly and lubricants in said slotted guideways adhere to and circulate in a plurality of bearings in which said transmission shafts in said slotted guideways are inserted; two sliders, which are fixed on two slide blocks separately and driven to be shifted by said transmission shafts along two linear rails at the top of framework such that the bearings sustain and disperse stresses with a workpiece clamped between said sliders.
2. The grip jaw structure as claimed in claim 1 wherein a framework comprises an upper frame, a main frame and a lower frame.
3. The grip jaw structure as claimed in claim 1 wherein the cam disk comprises a lubricant guideway which communicates with said slotted guideways.
4. The grip jaw structure as claimed in claim 1 wherein said cam disk comprises lock holes in which two set screws are inserted such that a relative position between said transmission shaft of the motor and said cam disk is fixed.
5. The grip jaw structure as claimed in claim 1 wherein said transmission shaft is inserted into and rivets said bearing.
6. The grip jaw structure as claimed in claim 1 wherein said transmission shaft has a thick portion which is shifted in a through hold portion of said upper frame.
7. The grip jaw structure as claimed in claim 1 wherein said transmission shaft has a thin portion inserted in one of the bearings.
8. The grip jaw structure as claimed in claim 1 wherein said slide block comprises a load-carrying portion and two rail portions.
9. The grip jaw structure as claimed in claim 3 wherein said lubricant guideway through which lubricants inside slotted guideways communicate with each other for metal residues held in lubricants uniformly prevents the transmission shafts from being worn unevenly and contributes to suppressing noise attributed to discrepancy of lubricants between slotted guideways.
10. The grip jaw structure as claimed in claim 3 wherein said slotted guideways in which lubricants are accommodated and both said transmission shafts and said bearings are immersed partially rely on said lubricant guideway for accommodations of lubricants inside said slotted guideway uniformly.
Description
BRIEF DESCRIPTIONS OF THE DRAWINGS
[0024] FIG. 1 is a schematic perspective view of a grip jaw structure in a preferred embodiment;
[0025] FIG. 2 is an exploded perspective view of a grip jaw structure in a preferred embodiment;
[0026] FIG. 3a is the first side view of a grip jaw structure in a preferred embodiment;
[0027] FIG. 3b is the first schematic view for slotted guideways of a grip jaw structure in a preferred embodiment;
[0028] FIG. 3c is the second schematic view for slotted guideways of a grip jaw structure in a preferred embodiment;
[0029] FIG. 3d is a side view for a transmission shaft of a grip jaw structure in a preferred embodiment;
[0030] FIG. 4a is the second side view of a grip jaw structure in a preferred embodiment;
[0031] FIG. 4b is a partial exploded view of a grip jaw structure in a preferred embodiment;
[0032] FIG. 4c is the first cross-sectional view of a grip jaw structure in a preferred embodiment;
[0033] FIG. 5a is the second cross-sectional view of a grip jaw structure in a preferred embodiment;
[0034] FIG. 5b is the third cross-sectional view of a grip jaw structure in a preferred embodiment;
[0035] FIG. 5c is the fourth cross-sectional view of a grip jaw structure in a preferred embodiment;
[0036] FIG. 6a is a schematic view for slide blocks of a grip jaw structure in a preferred embodiment;
[0037] FIG. 6b is the fifth cross-sectional view of a grip jaw structure in a preferred embodiment;
[0038] FIG. 7a is the first schematic view for operation of a grip jaw structure in a preferred embodiment;
[0039] FIG. 7b is the second schematic view for operation of a grip jaw structure in a preferred embodiment;
[0040] FIG. 7c is the third schematic view for operation of a grip jaw structure in a preferred embodiment.
DETAILED DESCRIPTIONS OF THE PREFERRED EMBODIMENTS
[0041] A grip jaw structure is explained in the preferred embodiments for clear understanding of purposes, characteristics and effects of the present disclosure.
[0042] Referring to FIG. 2 for the first embodiment, which illustrates a grip jaw structure consisting of multiple parts and comprising a framework (10), a motor (20), a cam disk (30), two transmission shafts (40) and two slide blocks (50).
[0043] In a grip jaw structure, as shown in FIGS. 1 and 2, the framework (10) comprises laminar or block-shaped structures on which components are fixed and a plurality of holes and/or grooves for installations of components to assemble.
[0044] Preferably, as shown in FIGS. 4a and 4c, the framework (10) comprises an upper frame (11), a main frame (12) and a lower frame (13), all of which are fixed and secured sequentially through a lock-up, welding or snap joint mechanism. In a grip jaw structure, the upper frame (11) used to fix two linear rails (52) thereon is opposite to the main frame (12) adequately (FIG. 4a). Moreover, the main frame (12) used to protect the cam disk (30) is opposite to the lower frame (13) adequately and has a hole in which the cam disk (30) is accommodated partially (FIG. 4c). Additionally, the lower frame (13) used to fix the motor (20) also has a hole in which both the motor (20) and the cam disk (30) are accommodated partially (FIG. 4c). As mentioned previously, the framework (10) divided into multiple parts structurally contributes to dispersing stresses sustained by the transmission shaft from layer to layer such that sliders between which a workpiece is clamped sustains more stresses.
[0045] In a grip jaw structure, the cam disk (30) is driven by a transmission shaft of the motor (20) clockwise or counterclockwise; in general, the motor (20) also known as an electric motor is an electric device transforming power energy to mechanical energy with which kinetic energy is generated for driving other facilities.
[0046] In a grip jaw structure, the cam disk (30), which is a component transmitting rotations induced by the motor (20) (FIG. 3a), comprises two slotted guideways (31). As shown in FIG. 3b, the slotted guideway (31) based on the Archimedean spiral in design is a groove structure in which lubricants are accommodated for lubrication, low frictions inside the slotted guideway (31) and a longer service life and replaces a traditional design that is characteristic of a groove designed are accommodate for lubrication and a guideway, both of which are separated from each other and criticized for its large dimension structurally and barely satisfactory capacity for lubricants. Moreover, referring to FIG. 6b, which illustrates a relative position between the transmission shaft of the motor (20) and the cam disk (30) is fixed by two set screws (301) in lock holes on the cam disk (30).
[0047] In a grip jaw structure, the transmission shaft (40) which is a rotary linear structure is used to transmit dynamic forces, that is, rotary forces generated by the motor (20) are transmitted to the slide blocks (50) from the cam disk (30).
[0048] Preferably, as shown in FIG. 3d, the transmission shaft (40) has a thick portion (401) and a thin portion (402): the thick portion (401) is consistently shifted in a portion through hold (111) in the upper frame (11) (FIG. 5b); the thin portion (402) is inserted into one of a plurality of bearings (41) (FIGS. 4b and 4c). Moreover, the bearing (41) also known as a component supporting a spindle or shaft parts for a linear movement is able to sustain a rotator or an object for a linear reciprocal motion mechanically, maintain a spindle at a central position and regulate a running mechanical component for reduced frictions between a transmission shaft (40) and a slotted guideway (31) when relative movements among components take place on a spindle (FIG. 4c); a transmission shaft (40) is inserted into and rivets a bearing (41) (not shown in figures).
[0049] In a grip jaw structure, as shown in FIG. 5c, a slide block (50) matches a linear rail (52): the slide block (50) is shifted on a rail; the linear rail (52) also known as a linear rail, a slide rail, a linear guide rail or a linear slide rail for a linear reciprocal movement sustains a certain torque and completes a high-precision linear motion which supports and navigates a moving component in a predetermined direction back and forth in the case of high loading. In the present disclosure, a grip jaw structure comprises two linear rails for better stability, load capacity and strength.
[0050] Preferably, as shown in FIGS. 5c and FIG. 6a, a slide block (50) comprises a load-carrying portion (501) and two rail portions (502) such that stresses are dispersed over all divided components of a slide block for a stable and durable occlusion of a grip jaw structure.
[0051] As mentioned previously, a detailed process is shown in the following sections.
[0052] Referring to FIG. 6b, which illustrates a relative position between the transmission shaft of the motor (20) and the cam disk (30) is fixed by two set screws (301) placed in lock holes on the cam disk (30). Moreover, referring to FIG. 3a, which illustrates a relationship that the cam disk (30) is driven and rotated by the rotary transmission shaft of the motor (20) fixed under the framework (10) clockwise or counterclockwise.
[0053] Referring to FIGS. 4c and 5a, which illustrate two transmission shafts (40) are accommodated inside two slotted guideways (31) of the cam disk (30) separately and each of the two transmission shafts (40) is inserted into one of a plurality of bearings (41). In practice, as shown in FIG. 4c, the slotted guideways (31) accommodate lubricants in which the transmission shafts (40) and the bearings (41) are immersed partially.
[0054] Then, the two transmission shafts (40) in the two slotted guideways (31) are driven to be shifted by the rotary cam disk (30) such that lubricants adhere to the transmission shafts (40) and a plurality of bearings (41), both of which are being shifted, as shown from FIG. 7a to FIG. 7b.
[0055] Referring to FIG. 5b, which illustrates the thick portion (401) of the transmission shaft (40) is shifted inside the through hold portion (111) of the upper frame (11) regularly for stability of the shifted transmission shaft (40); referring to FIG. 5c, which illustrates two slide blocks (50) are driven to be shifted by the transmission shafts (40) separately along the two linear rails (52) at the top of the framework (10). In detail, as shown in FIG. 6a, the slide block (50) is driven to be shifted by the rail portions (502) fixed under the load-carrying portion (501) in which the transmission shaft (40) is inserted along the two linear rails (52) at the top of the framework (10).
[0056] The process to clamp a workpiece (6) by sliders (51) is shown from FIG. 7a to FIG. 7b and FIG. 7c; the workpiece (6) is clamped by the sliders (51) fixed on and driven by the two slide blocks (50) and shifted along the two linear rails (52) on the framework (10) and stresses are dispersed over all mounted components through the bearings (41).
[0057] Referring to FIG. 3c, which illustrates a grip jaw structure in the second embodiment in which the characteristics and symbols identical to those of the first embodiment in FIGS. 1, 2, 3a, 3b, 3d, 4a, 4b, 4c, 5a, 5b, 5c, 6a, 6b, 7a, 7b and 7c are not explained hereinafter. The difference in the second embodiment differing from the first embodiment is the cam disk (30) which is changed structurally.
[0058] As shown in FIG. 3c, the cam disk (30) comprises a lubricant guideway (32) linking the slotted guideways (31); the lubricant guideway (32) through which lubricants inside slotted guideways (31) communicate with each other for metal residues held in lubricants uniformly prevents the transmission shafts (40) from being worn unevenly and contributes to suppressing noise attributed to discrepancy of lubricants between slotted guideways (31).
[0059] As mentioned previously, the detailed process is shown in the following sections.
[0060] Referring to FIG. 6b, which illustrates a relative position between the transmission shaft of the motor (20) and the cam disk (30) is fixed by two set screws (301) placed in lock holes (not shown in FIG. 6b) on the cam disk (30). Referring to FIG. 3a, which illustrates a relationship that the cam disk (30) is driven and rotated by the rotary transmission shaft of the motor (20) fixed under the framework (10) clockwise or counterclockwise
[0061] Referring to FIGS. 4c and 5a, which illustrate two transmission shafts (40) are accommodated inside two slotted guideways (31) of the cam disk (30) separately and each of the two transmission shafts (40) is inserted into one of a plurality of bearings (41). In practice, as shown in FIG. 4c, the slotted guideways (31) accommodates lubricants in which the transmission shafts (40) and the bearings (41) are immersed partially. Referring to FIG. 3c, which illustrates lubricants accommodated in the slotted guideways (31) uniformly through the lubricant guideway (32) prevent metal residues generated by frictions from being scattered in the slotted guideways (31) unevenly.
[0062] Then, the two transmission shafts (40) in the two slotted guideways (31) are driven to be shifted by the rotary cam disk (30) such that lubricants adhere to the transmission shafts (40) and a plurality of bearings (41), both of which are being shifted, as shown from FIG. 7a to FIG. 7b, and circulate between the slotted guideways (31) through the lubricant guideway (32) for consistent lubrication and no noise attributed to frictions induced by poor lubrication.
[0063] Referring to FIG. 5b, which illustrates the thick portion (401) of the transmission shaft (40) is shifted inside the through hold portion (111) of the upper frame (11) regularly for stability of the shifted transmission shaft (40); referring to FIG. 5c, which illustrates two slide blocks (50) are driven to be shifted by the transmission shafts (40) along the two linear rails (52) at the top of the framework (10). In detail, as shown in FIG. 6a, the slide block (50) is driven to be shifted by the rail portions (502) fixed under the load-carrying portion (501) in which the transmission shaft (40) is inserted along the two linear rails (52) at the top of the framework (10).
[0064] The process to clamp a workpiece (6) by the sliders (51) is shown from FIG. 7a to FIG. 7b and FIG. 7c; the workpiece (6) is clamped by the sliders (51) fixed on and driven by the two slide blocks (50) and shifted along the two linear rails (52) on the framework (10) and stresses are dispersed over all mounted components through the bearings (41).
[0065] As shown in previous embodiments, a grip jaw structure in which slotted guideways are integrated with a lubricant container for less space required comprises a lubricant guideway additive for better stability of a grip jaw structure operated for a long period of time. Accordingly, a grip jaw structure which is different from an ordinary gripper device and referred to as creative work in applications meets patentability and is applied for the patent.
[0066] It should be reiterated that the above descriptions present the preferred embodiments, and any equivalent changes in specifications, claims or drawings still belongs to the technical field within the present disclosure with reference to claims hereinafter.
