Jig device for fixing the workpiece for machine tools

Abstract

The present invention relates to a jig for fixing a workpiece, wherein the configuration comprises: a jig body portion provided so that the outer surface of the workpiece may be seated on an upper surface; and a workpiece fixing block portion provided to be movable in a first direction horizontal to the upper surface of the jig body portion so as to come into contact with any side portion of the workpiece placed on the upper surface of the jig body portion, and having a fixing projection portion formed protruding outwardly along the upper surface so as to fix the corner of the workpiece when it comes into contact with the side portion of the workpiece. According to the above configuration, the problem of deformation of the workpiece occurring when the entire side portion of the workpiece is pressed and fixed with a clamp or the like can be fundamentally resolved.

Description

Technology Field

[0001] The present invention relates to a workpiece fixing jig capable of fixing a workpiece without deformation during mechanical processing such as cutting. Background Technology

[0002] Generally, when machining a workpiece using machine tools such as MCTs, the workpiece is fixed in place using a fixing jig equipped on the machine tool to prevent movement during processing. Various types of such workpiece fixing jigs have been developed and are in use.

[0003] A conventional "jig for fixing a workpiece" is disclosed in Korean Registered Patent No. 10-1875025 (registered on June 29, 2018). According to the aforementioned publication, the invention relates to a jig for fixing a workpiece having a novel structure that allows the tilt of the workpiece to be freely adjusted and fixed when processing the workpiece using a machine tool.

[0004] However, conventional workpiece fixing jigs have a problem in that deformation of the workpiece may occur if the entire side of the workpiece is pressed down with a clamp or the like when fixing the workpiece.

[0005] In particular, during machining, if the entire side of the workpiece is pressed with a clamp or similar device while the internal strength of the workpiece is weakened by the machining process, deformation occurs very easily, leading to a high defect rate and imposing significant limitations on product manufacturing. The problem to be solved

[0006] The present invention has been devised to solve the aforementioned problems, and aims to provide a workpiece fixing jig that can fundamentally solve the problem of deformation of the workpiece when the entire side of the workpiece is pressed and fixed with a clamp or the like, by having the fixing projection fix the corner of the workpiece when the workpiece fixing block part comes into contact with the side part of the workpiece. means of solving the problem

[0007] The present invention comprises: a jig body portion provided so that the outer surface of a workpiece can be seated on an upper surface; and a workpiece fixing block portion provided to be movable in a first direction horizontal to the upper surface of the jig body portion so as to come into contact with any side portion of the workpiece placed on the upper surface of the jig body portion, and having a fixing projection portion formed protruding outwardly along the upper surface so as to fix the corner of the workpiece when it comes into contact with the side portion of the workpiece.

[0008] In the present invention, a guide plate having a first fastening hole formed on the upper surface of the jig body part is provided, and a first elongated hole is formed in one direction corresponding to the first fastening hole in the workpiece fixing block part, so that the workpiece fixing block part is movable along the guide plate, and when a fastening means is fastened to the first fastening hole and the first elongated hole, the fixing projection part presses the edge of the workpiece to fix the workpiece.

[0009] In the present invention, a stopper is provided on the lower edge of the workpiece fixing block so that when the workpiece fixing block moves along the guide plate, it catches on the guide plate and cannot move further.

[0010] In the present invention, a second fastening hole is formed on the upper surface of the jig body part, and a positioning block is provided to contact a side part of the workpiece and to align the position where the workpiece is placed. A second elongated hole is formed in one direction in the workpiece fixing block part corresponding to the second fastening hole, so that the workpiece fixing block part is movable along the positioning block. When a fastening means is fastened to the second fastening hole and the second elongated hole, the fixing projection part presses the edge of the workpiece to fix the workpiece.

[0011] In the present invention, a stopper is provided on the lower edge of the workpiece fixing block so that when the workpiece fixing block moves along the positioning block, it gets caught on the positioning block and cannot move further.

[0012] The present invention further comprises a position fixing block portion configured to be movable in a second direction perpendicular to the first direction and horizontal with respect to the upper surface of the jig body portion so as to be able to come into contact with another side portion of the workpiece placed on the upper surface of the jig body portion.

[0013] In the present invention, a cooling channel is formed in a groove shape on the upper surface of the jig body portion, so that cooling water can flow between the workpiece and the cooling channel during the cutting process of the workpiece.

[0014] In the present invention, the cooling channel is characterized by being formed in a grid pattern on the upper surface of the jig body. Effects of the invention

[0015] According to the jig for fixing a workpiece of the present invention, the following effects are achieved.

[0016] When the workpiece fixing block part comes into contact with the side of the workpiece, the fixing projection part presses and fixes the corner of the workpiece, thereby fundamentally resolving the problem where deformation of the workpiece may occur when the entire side of the workpiece is pressed and fixed with a clamp or the like.

[0017] A cooling channel is formed in a groove shape on the upper surface of the jig body, allowing cooling water to flow between the workpiece and the channel during cutting, thereby reducing and removing heat accumulation in the cutting section and the workpiece. Brief explanation of the drawing

[0018] FIG. 1 is a perspective view illustrating a jig for fixing a workpiece according to a preferred embodiment of the present invention. FIGS. 2 and FIGS. 3 are drawings illustrated to show the operation of the workpiece fixing block part and the position fixing block part in FIG. 1. FIG. 4 is a cross-sectional view illustrated to show the operation of the workpiece fixing block part in FIG. 2. FIG. 5 is a cross-sectional view illustrated to show the operation of the position-fixing block part in FIG. 1. FIG. 6 is a perspective view showing a workpiece fixed using a workpiece fixing jig according to a preferred embodiment of the present invention in a state where processing is completed. Specific details for implementing the invention

[0019] Preferred embodiments according to the present invention will be described in detail below with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, and should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention.

[0020] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention; thus, it should be understood that various equivalents and modifications that can replace them may exist at the time of filing this application.

[0021] The workpiece presented in this specification is a part of an electron microscope case and is approximately L-shaped; however, the workpiece is not necessarily limited to an electron microscope case, and any L-shaped part is sufficient. Furthermore, the present invention is a workpiece fixing jig capable of fixing such a workpiece during machining processes such as cutting.

[0022] As illustrated in FIG. 1, a jig for fixing a workpiece according to a preferred embodiment of the present invention includes a jig body part (100) and a workpiece fixing block part (200).

[0023] It is preferable that the jig body (100) be in the shape of an L-shape so that the outer surface of the workpiece (10) in the shape of an L-shape can be placed thereon. In this specification, as the workpiece (10) is depicted with both wings having an angle of 90 degrees or more rather than being exactly vertical, the upper surface (100a, 100b) of the jig body (100), that is, the horizontal surface (100a) and vertical surface (100b) on which the workpiece (10) is placed, may have an angle of 90 degrees or more, similar to the shape of the outer surface of the workpiece (10). In this way, the upper surface (100a, 100b) of the jig body (100) may vary depending on the shape of the workpiece (10).

[0024] On the upper surface of the jig body (100), a guide plate (130) having a first fastening hole (131) formed therein is provided as shown in FIG. 4. In this embodiment, one guide plate (130) is provided on the front side in FIG. 1 on the horizontal plane (100a) of the jig body (100), and another guide plate (130) is provided on the front side in FIG. 1 on the vertical plane (100b) of the jig body (100).

[0025] Additionally, a positioning block (150) having a second fastening hole (151) formed therein is provided on the upper surface of the jig body (100) as shown in FIG. 4. The positioning block (150) is provided to contact a side of the workpiece (10) to align the position where the workpiece (10) is placed. A step portion (153) is formed on the upper surface of the positioning block (150). In this embodiment, one positioning block (150) is provided on the rear side in FIG. 1 on the horizontal plane (100a) of the jig body (100), and another positioning block (150) is provided on the rear side in FIG. 1 on the vertical plane (100b) of the jig body (100).

[0026] As illustrated in FIGS. 2 and 3, the workpiece fixing block portion (200) is provided to be movable in a first direction (direction indicated in the drawing) horizontal with respect to the upper surface (100a, 100b) of the jig body portion (100) so as to come into contact with any side portion (11) of the workpiece (10) placed on the upper surface (100a, 100b) of the jig body portion (100). To this end, the workpiece fixing block portion (200) has a first elongated hole (210) formed in the first direction corresponding to the first fastening hole (131). Accordingly, as shown in FIG. 4, when a fastening means (20) is fastened to the first fastening hole (131) of the guide plate (130) and the first elongated hole (210) of the workpiece fixing block part (200), the fixing projection part (230) presses the corner of the workpiece (10) to fix the workpiece (10). Similarly, a second elongated hole (220) is formed in the workpiece fixing block part (200) in a first direction corresponding to the second fastening hole (151). Accordingly, when a fastening means (30) is fastened to the second fastening hole (151) of the positioning block (150) and the second elongated hole (220) of the workpiece fixing block part (200), the fixing projection part (230) presses the corner of the workpiece (10) to fix the workpiece (10).

[0027] In the workpiece fixing block (200), a fixing projection (230) protruding outward along the upper surface is formed so that the corner of the workpiece (10) can be fixed as shown in FIG. 4 when the workpiece fixing block (200) comes into contact with the side of the workpiece (10).

[0028] Additionally, the workpiece fixing block (200) is provided with a stopper (250) that protrudes downward along the edge, which prevents the workpiece fixing block (200) from moving further by getting caught on the guide plate (130) or the positioning block (150) as shown in FIG. 4 when the workpiece fixing block (200) moves along the guide plate (130) or the positioning block (150). In this embodiment, the stopper (250) is provided on the outer part of the lower surface of the workpiece fixing block (200), so that the workpiece fixing block (200) is prevented from moving further in the inner direction of the jig body (100) by the stopper (250) getting caught on the stepped portion (153) of the guide plate (130) or the positioning block (150).

[0029] As illustrated in FIGS. 2 and 3, the position fixing block portion (300) is provided to be movable in a second direction (direction indicated in the drawing) that is horizontal to the upper surface of the jig body portion (100) and perpendicular to the first direction, so as to be able to come into contact with the other side portion (13) of the workpiece (10) placed on the upper surface of the jig body portion (100). To this end, as shown in FIG. 5, a third fastening hole (170) is formed on the upper surface of the jig body portion (100), and a third elongated hole (310) is formed in the position fixing block portion (300) that corresponds to the third fastening hole (170) and extends in the second direction. Accordingly, when a fastening means is fastened to the third fastening hole (170) of the jig body part (100) and the third slot (310) of the position fixing block part (300), the position fixing block part (300) comes into contact with the side part of the workpiece (10), thereby acting as a stopper (250) that prevents the workpiece (10) from moving in the second direction.

[0030] As illustrated in FIG. 1, it is preferable that a cooling channel (190) be formed in the shape of a groove on the upper surface of the jig body (100). It is preferable that the cross-section of the groove be curved so that cooling water can flow well on the cooling channel (190) and prevent scratches from forming on the workpiece (10).

[0031] It is preferable that these cooling channels (190) be formed in a grid pattern on the upper surface of the main body to increase cooling efficiency.

[0032] It is preferable that a discharge channel (191, 193, 195) through which cooling water is discharged is formed on one or both sides of the cooling channel (190). In this embodiment, a multi-layered discharge channel (191) is formed at the lower end of the cooling channel (190) on the vertical surface (100b), and discharge channels (193, 195) are formed on one side and the other side of the cooling channel (190), respectively, on the horizontal surface (100a).

[0033] As described above, when a cooling channel (190) is formed on the upper surface of the jig body (100), cooling water can flow between the workpiece (10) and the cooling channel (190) during the cutting process of the workpiece (10).

[0034] FIG. 6 illustrates the state in which a workpiece (10) fixed by the workpiece fixing jig of the present invention configured as above has been cut. As shown in FIG. 6, when the interior of the workpiece (10) is cut, deformation such as bending inward may occur when the entire side portion of the workpiece is pressed and fixed with a clamp or the like. However, as in the present invention, when the workpiece fixing block portion (200) comes into contact with the side portion of the workpiece (10), the fixing projection portion (230) presses and fixes the corner of the workpiece (10), thereby fundamentally solving this problem.

[0035] A cooling channel (190) is formed in a groove shape on the upper surface of the jig body (100), so that cooling water can flow between the workpiece (10) and the cooling channel (190) during the cutting process of the workpiece (10), thereby reducing and removing heat accumulation in the cutting section and the workpiece.

[0036] As described above, although the present invention has been explained by limited embodiments and drawings, the present invention is not limited thereto and it is obvious that various modifications and variations are possible within the scope of the technical spirit of the present invention and the equivalent scope of the claims described below by those skilled in the art to which the present invention belongs. Explanation of the symbols

[0037] 100: Jig main body 130: Guide plate 131 : First fastening hole 150 : Positioning block 151 : Second fastening hole 190 : Cooling channel 200 : Workpiece fixing block part 210 : First elongated hole 220 : Second slot 230 : Fixing projection 250 : Stopper 300 : Position fixing block part

Claims

Claim 1 A jig for fixing a workpiece, comprising: a jig body portion provided so that the outer surface of a workpiece may be seated on the upper surface; and a workpiece fixing block portion provided to be movable in a first direction horizontal to the upper surface of the jig body portion so as to come into contact with any side portion of the workpiece placed on the upper surface of the jig body portion, and having a fixing projection portion formed protruding outwardly along the upper surface so as to fix the corner of the workpiece when it comes into contact with the side portion of the workpiece; wherein a guide plate having a first fastening hole formed on the upper surface of the jig body portion is provided, and a first elongated hole corresponding to the first fastening hole is formed in the workpiece fixing block portion so as to be movable along the guide plate, and when a fastening means is fastened to the first fastening hole and the first elongated hole, the fixing projection portion presses the corner of the workpiece to fix the workpiece. Claim 2 delete Claim 3 A jig for fixing a workpiece according to claim 1, characterized in that a stopper is provided on the lower edge of the workpiece fixing block so that when the workpiece fixing block moves along the guide plate, it catches on the guide plate and cannot move further. Claim 4 A jig for fixing a workpiece according to claim 1, wherein a second fastening hole is formed on the upper surface of the jig body part, and a positioning block is provided to be provided to be in contact with a side part of the workpiece so as to be positioned such that the workpiece is placed therein, and a second elongated hole is formed in one direction in the workpiece fixing block part corresponding to the second fastening hole, so that the workpiece fixing block part is movable along the positioning block, and when a fastening means is fastened to the second fastening hole and the second elongated hole, the fixing projection part presses the edge of the workpiece to fix the workpiece. Claim 5 A jig for fixing a workpiece according to claim 4, characterized in that a stopper is provided on the lower edge of the workpiece fixing block portion so that when the workpiece fixing block portion moves along the positioning block, it gets caught on the positioning block and cannot move further. Claim 6 A jig for fixing a workpiece, characterized by further including, in any one of claims 1, 3, 4, and 5, a position fixing block portion arranged to be movable in a second direction perpendicular to the first direction and horizontal with respect to the upper surface of the jig body portion so as to be in contact with another side portion of the workpiece placed on the upper surface of the jig body portion. Claim 7 A jig for fixing a workpiece, characterized in that, in any one of claims 1, 3, 4, and 5, a cooling channel is formed in a groove shape on the upper surface of the jig body portion, so that cooling water can flow between the workpiece and the cooling channel during cutting of the workpiece. Claim 8 A jig for fixing a workpiece according to claim 7, characterized in that the cooling channel is formed in a grid pattern on the upper surface of the jig body part.

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