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KR-20260067173-A - CHUCK JIG FOR CNC MACHINE FOR MACHINING BLADE OF BEARING ATTACHING TOOL

KR20260067173AKR 20260067173 AKR20260067173 AKR 20260067173AKR-20260067173-A

Abstract

The present invention relates to a chuck jig for a CNC machining machine, and more specifically, to a chuck jig for a CNC machining machine specialized for machining blades of a bearing removal tool, which stably spaces and supports a plurality of blades introduced into the interior of a sub-chuck and arranged at equal intervals along the circumferential direction, thereby enabling the sub-chuck to more stably grip and fix the blades, and operates to smoothly and quickly discharge each miniaturized blade after machining is completed from the sub-chuck, thereby promoting the productivity of the blades.

Inventors

  • 정영균

Assignees

  • 정영균

Dates

Publication Date
20260512
Application Date
20241105

Claims (5)

  1. In a chuck jig for a CNC machining machine in which a plurality of blades arranged at equal intervals along the circumferential direction are introduced into the interior of the sub-chuck and the ends of each of these blades are radially spaced apart and supported within the sub-chuck, A cylinder body formed with an open end and a guide bar extending a certain length toward the entrance of the sub-chuck, which is inserted into the center of each blade introduced into the entrance of the sub-chuck at the other end; A head that is mounted on the outer side of the above guide bar to be capable of reciprocating forward and backward, and moves to the rear of the guide bar when it comes into contact with and is supported by the end of a blade introduced into the sub-chuck; and A chuck jig for a CNC machining machine for machining a blade of a bearing removal tool, characterized by including: a resilient member that is connected to the head while installed inside the cylinder body and, when the sub-chuck is opened, moves the head, which has been pushed backward by the blade, forward to facilitate the forced ejection of the blade from the sub-chuck.
  2. In claim 1, A first operating space is formed extending forward and backward within the cylinder body, and a second operating space is formed extending forward and backward within the guide bar, communicating with the first operating space but having an inner diameter narrower than that of the first operating space. A long guide slot extending forward and backward is formed through the guide bar toward the second operating space, and The above-mentioned carbon fiber part is, A cock mounted at the rear end of the cylinder body to close the open end of the first operating space; A piston that operates to reciprocate back and forth along the longitudinal direction within the first and second operating spaces; A linkage pin that links a head mounted on the outer side of the guide bar and the piston; and A chuck jig for a CNC machining machine for machining a blade of a bearing removal tool, characterized by including a spring interposed between the piston and the cock to elastically press the piston forward.
  3. In claim 2, A chuck jig for a CNC machining machine for machining a blade of a bearing removal tool, characterized in that when the restraining force of the blade and the head supported by the blade is released as the sub-chuck is opened, the piston moves forward by the elastic restoring force of the elastic spring, and the head is pulled by this and moves forward along the guide bar, thereby being forcibly elasticated to the outside of the sub-chuck.
  4. In claim 3, The head has a cylindrical structure that is fitted over the outer side of the guide bar, and a first pinhole is formed vertically through a corresponding position of the guide slot. The above piston is, An operating bar having a long rod-shaped structure inserted into the second operating space and having a second pinhole formed vertically through a corresponding position of the guide slot; and It includes a stopper formed at the rear end of the above-mentioned operating bar, disposed in the first operating space, and supported by being caught at a point between the first operating space and the second operating space to restrict forward movement; A chuck jig for a CNC machining machine for machining a blade of a bearing removal tool, characterized in that the above-mentioned interlocking pin mutually penetrates the first pin hole, guide slot, and second pin hole to connect the head and the piston.
  5. In claim 4, The forward and backward movement range of the head is within the formation range of the guide slot, and A chuck jig for a CNC machine for machining blades of a bearing removal tool, characterized in that the end of the guide bar has a diagonally inclined surface formed thereon to radially guide each blade introduced toward the end of the guide bar.

Description

Chuck jig for CNC machine for machining blade of bearing attachment tool The present invention relates to a chuck jig for a CNC machining machine, and more specifically, to a chuck jig for a CNC machining machine specialized for machining blades of a bearing removal tool, which stably spaces and supports a plurality of blades introduced into the interior of a sub-chuck arranged at equal intervals along the circumferential direction, thereby enabling the sub-chuck to more stably grip and fix the blades, and operates to smoothly and quickly discharge each miniaturized blade after machining is completed from the sub-chuck, thereby promoting blade productivity. FIG. 11 shows a bearing removal tool (1) for removing a bearing from a bushing. The bearing removal tool (1) described above is structured to include a plurality of blades (1a) that are radially mounted around a shaft (1c) and the shaft (1c), and are inserted into the inner ring of the bearing and supported by being caught on the inner ring, thereby enabling the bearing to be forcibly pulled when an external force is applied in the axial direction. Meanwhile, the blade (1a) of the bearing removal tool (1) must not only implement a precise curvature that matches the inner diameter of a standardized bearing, but also be applicable to small bearings, so in some cases, it must be machined to be very small. Additionally, to machine the catch (1b) at both ends to catch on the inner ring of the bearing, the workpiece in the form of a round bar must be manufactured by precision machining using equipment such as a CNC. As an example of a conventional method for processing the above blade (1a) using CNC equipment, the manufacturing process is carried out by gripping and fixing both ends of a round bar workpiece with a chuck, processing the fixed workpiece into an arc shape, and then alternately separating the gripped and fixed ends to perform a locking projection on the ends. However, when using this method, since the blade (1a) is extracted in series along the longitudinal direction of the workpiece, the portion excluding the arc-shaped blade (1a) from the workpiece of the round bar is lost, resulting in a high loss rate and significant waste of raw materials. Additionally, there was a disadvantage of poor production efficiency because the chucks at both ends had to be alternately detached and reattached to perform the cutting of the stopper (1b). Figure 1 is a drawing illustrating the process of machining the blade of a bearing removal tool using a CNC machining machine. FIGS. 2 and 3 are drawings illustrating the overall appearance of a chuck jig for a CNC machining machine for machining the blade of a bearing removal tool according to the present invention. FIG. 4 is a diagram showing the exploded configuration of a chuck jig for a CNC machining machine for machining the blade of a bearing removal tool according to the present invention. FIG. 5 is a schematic diagram illustrating the cross-sectional configuration of a chuck jig for a CNC machining machine for machining the blade of a bearing removal tool according to the present invention, when mounted on a sub-chuck. FIG. 6 is a schematic diagram illustrating a cross-sectional configuration in which a blade is introduced into the interior of a sub-chuck while a chuck jig for a CNC machining machine for machining a blade of a bearing removal tool according to the present invention is mounted on a sub-chuck. FIG. 7 is a schematic diagram illustrating the longitudinal section configuration of the blade portion shown in FIG. 6. FIG. 8 is an enlarged view of the configuration of the main part of FIG. 5. FIG. 9 is an enlarged view of the configuration of the main part of FIG. 6. FIG. 10 is a drawing exemplarily illustrating the process of discharging a blade. FIG. 11 is a drawing illustrating a bearing removal tool. To fully understand the present invention, preferred embodiments of the invention are described with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be interpreted as being limited to the embodiments described in detail below. These embodiments are provided to more completely explain the present invention to those with average knowledge in the art. Accordingly, the shapes of elements in the drawings may be exaggerated to emphasize clearer explanations. It should be noted that in each drawing, identical components may be depicted with the same reference numeral. Detailed descriptions of known functions and configurations that are deemed to unnecessarily obscure the essence of the present invention are omitted. The present invention relates to a chuck jig (100) for a CNC machine (hereinafter referred to as the chuck jig (100)) for exclusively machining the blade (1a) of the bearing removal tool (1) described above. Prior to the detailed description of the present invention, a description of the