Jig device for machining column-shaped parts

Abstract

The present invention relates to a jig device for machining column-shaped parts that enables the simultaneous machining of various shaft parts and pie-type post parts, and other parts having a column shape. To this end, the present invention aims to provide a jig device for machining column-shaped parts that can significantly improve the machining and manufacturing productivity of column-shaped parts, shorten machining time, and improve the workability of the operator by fixing a plurality of hollow column-shaped parts, which are the workpieces to be machined, to a jig plate of a predetermined area using a jig and bolts, and then allowing an end mill of a CNC milling machine to continuously perform hole or groove machining on a pre-designed part of each column-shaped part fixed to the jig plate along a pre-set coordinate, thereby enabling hole or groove machining for a plurality of column-shaped parts to be performed at once.

Description

Technology Field

[0001] The present invention relates to a jig device for machining column-shaped parts, and more specifically, to a jig device for machining column-shaped parts capable of simultaneously machining various shaft parts and pie-type post parts having a column shape. Background Technology

[0003] Column-shaped parts, such as shaft components and pie-type post components used in various industrial machinery, automobiles, and ships, are manufactured by first machining them into hollow parts with a circular or elliptical column shape, and then further machining various types of holes and grooves into pre-designed areas of the pre-machined hollow parts according to the purpose and application of the part.

[0004] For example, the above column-shaped part can be manufactured through a process of first processing a workpiece into a hollow part having a circular or elliptical column shape, and a process of secondarily processing a hole or groove for the use of the part on a pre-designed part such as the upper and lower surfaces of the first-processed hollow part, or secondarily processing a long groove having a predetermined depth along the longitudinal direction on the circumferential surface.

[0005] However, according to the conventional technology for processing the above-mentioned column-shaped parts, there is a problem of significantly reduced productivity because the first-processed hollow parts are fixed one by one in a vise, and then holes or grooves are secondarily processed in the pre-designed parts fixed in the vise to produce the column-shaped parts one by one.

[0006] In addition, there are problems such as excessive setting time required for processing parts, including fixing the first-processed hollow parts one by one in a vise, and workers complaining of musculoskeletal fatigue due to accumulated fatigue and simple repetitive tasks. Prior art literature

[0008] Registered Patent No. 10-1655875 (September 2, 2016) The problem to be solved

[0009] The present invention was devised to solve the aforementioned conventional problems, and aims to provide a jig device for machining column-shaped parts that can significantly improve the machining and manufacturing productivity of column-shaped parts, shorten machining time, and improve the workability of the operator by fixing a plurality of hollow column-shaped parts, which are the workpieces to be machined, to a jig plate of a predetermined area using a jig and bolts, and then allowing the end mill of a CNC milling machine to move along a preset coordinate to continuously perform hole or groove machining on a pre-designed part of each column-shaped part fixed to the jig plate, thereby enabling hole or groove machining for a plurality of column-shaped parts to be performed at once. means of solving the problem

[0011] To achieve the above-mentioned objective, the present invention comprises: a jig plate having a plurality of jig fixing grooves formed at predetermined intervals along the horizontal and vertical directions; a part fixing jig provided with a hollow structure having a first female screw portion formed in an inner diameter portion, which is inserted and fastened into each jig fixing groove; and a part fixing bolt inserted and fastened into the female screw portion of the part fixing jig through the hollow portion of the column-shaped part, while a column-shaped part, which is a workpiece to be processed, is inserted and placed in the outer diameter portion of each part fixing jig; and is configured such that an end mill of a CNC milling machine can continuously or simultaneously perform hole or groove machining while moving along preset coordinates at a preset position of each column-shaped part fixed by the part fixing jig and the part fixing bolt. The above-described jig device for machining a column-shaped part comprises: (a) a jig plate in the shape of a rectangular metal plate, wherein jig fixing grooves are formed on its upper surface at equal intervals in 12 horizontal rows and 3 vertical rows, totaling 36 grooves, and jig mounting holes are formed at both ends and in the middle of the jig plate so as to be fixed to a machining table of a CNC milling machine by bolt fastening; (b) a part fixing jig having a first female screw thread formed in its inner diameter is inserted into each jig fixing groove, a second female screw thread is formed in the inner diameter of the jig fixing groove, and a jig fixing male screw thread is formed in the lower outer diameter of the part fixing jig and is screw-fastened to the second female screw thread to be screw-fixed to the jig plate; and (c) a column-shaped part, which is the workpiece to be machined, is inserted into the outer diameter of the part fixing jig, and a part fixing bolt penetrates the hollow portion of the column-shaped part and is fastened to the first female screw thread, and the head of the bolt presses against the upper surface of the column-shaped part to fix the column-shaped part. The invention is characterized by the fact that, for a plurality of fixed column-shaped parts as described above, the end mill of a CNC milling machine can perform hole or groove machining continuously or simultaneously while moving along preset coordinates.

[0012] In addition, a plurality of jig mounting holes (13) for mounting the jig plate to a CNC milling machine are formed at both ends and in the middle of the jig plate, a second female screw is formed in the inner diameter of the jig fixing groove of the jig plate, and a male screw for fixing the jig is formed in the outer diameter of the lower end of the jig for fixing the part to be screw-fastened to the second female screw.

[0013] In addition, the horizontal and vertical pitches of the jig fixing grooves are designed to be equal, and the coordinate system of each column and row corresponds to the CNC program coordinates; jig mounting holes are arranged at both ends and in the middle to suppress sagging and vibration through multi-point fastening; the jig for fixing parts is fixed without shaking by screw fastening between the male screw part for fixing the jig and the second female screw part; the head of the bolt for fixing parts directly presses the upper surface of the column-shaped part to suppress shaking caused by external force; and is configured to machine holes and grooves continuously or simultaneously for multiple column-shaped parts on the same jig plate. Effects of the invention

[0015] Through the means for solving the above-mentioned problem, the present invention provides the following effects.

[0016] First, by fixing a number of hollow column-shaped parts to a jig plate of a predetermined area using a jig and bolts for fixing parts, and then enabling the continuous machining of holes or grooves in pre-designed parts of each column-shaped part at once, the machining of holes or grooves for a number of column-shaped parts can be performed simultaneously, thereby significantly improving the machining and manufacturing productivity of column-shaped parts.

[0017] Second, as hole or groove machining for multiple column-shaped parts is performed simultaneously, it is possible to reduce machining time and improve worker efficiency, and it is possible to provide the effects of reducing labor and preventing musculoskeletal disorders. Brief explanation of the drawing

[0019] FIG. 1 is a plan view illustrating a jig plate of a jig device for machining a column-shaped part according to the present invention. FIG. 2 is a plan view illustrating a state in which a part fixing jig is inserted and fastened to a jig plate of a jig device for processing a column-shaped part according to the present invention. FIG. 3 is a plan view illustrating a state in which a column-shaped part to be processed is fastened to a part fixing jig of a jig device for processing a column-shaped part according to the present invention. FIG. 4 is a cross-sectional view taken along line AA of FIG. 3, FIG. 5 is a cross-sectional view taken along line BB of FIG. 3, FIG. 6 is a plan view illustrating a state in which a part fixing jig is screw-fastened to a jig plate of a jig device for machining a column-shaped part according to the present invention. FIG. 7 is a schematic diagram illustrating an example in which a hole is machined in a column-shaped part fixed to a part fixing jig of a jig device for machining a column-shaped part according to the present invention. FIG. 8 is a schematic diagram illustrating an example in which hole machining and groove machining are performed on a column-shaped part fixed to a part fixing jig of a jig device for machining a column-shaped part according to the present invention. Specific details for implementing the invention

[0020] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0021] Figure 1 attached is a plan view showing a jig plate of a jig device for machining a column-shaped part according to the present invention, Figure 2 is a plan view showing a state in which a jig for fixing a part is inserted and fastened to the jig plate of a jig device for machining a column-shaped part according to the present invention, and Figure 3 is a plan view showing a state in which a column-shaped part to be machined is fastened to the jig for fixing a part of a jig device for machining a column-shaped part according to the present invention.

[0022] A jig plate (10), which is a component of a jig device for processing a column-shaped part according to the present invention, can be manufactured in a rectangular plate shape made of metal material as shown in FIG. 1, with a plurality of jig fixing grooves (11) formed at predetermined intervals along the horizontal and vertical directions.

[0023] Preferably, the jig fixing grooves (11) formed on the jig plate (10) may be formed at equal intervals of 12 along the horizontal direction and 3 along the vertical direction, for a total of 36 grooves formed at equal intervals.

[0024] In addition, as shown in FIGS. 1 and FIGS. 5, a plurality of jig mounting holes (13) may be formed at both ends and the middle portion of the jig plate (10) to fix-mount the jig plate (10) to a mounting position such as a machining table of a CNC milling machine (not shown).

[0025] To elaborate, by inserting a bolt through the jig mounting hole (13) of the jig plate (10) and inserting and fastening it to the work table of a CNC milling machine (not shown), the jig plate (10) can be maintained in a firmly fixed state on the work table of a CNC milling machine (not shown).

[0026] A part fixing jig (20) for fixing a column-shaped part (100) to be processed can be inserted and fastened into each jig fixing groove (11) of the above jig plate (10).

[0027] To this end, the above-mentioned jig (20) for fixing parts is provided with a hollow structure having a first female screw portion (21) formed in the inner diameter portion as shown in FIGS. 2 and 4, and can be inserted and fastened into each jig fixing groove (11) of the jig plate (10).

[0028] Accordingly, as shown in FIG. 3, a column-shaped part (100), which is a workpiece, can be inserted and placed in the outer diameter of each jig fixing groove (11) of the jig plate (10).

[0029] To elaborate, as the above column-shaped part (100) is manufactured in a hollow shape, when the column-shaped part (100) is inserted and positioned in the outer diameter portion of the jig (20) for fixing each part, the jig (20) for fixing each part is positioned in the inner diameter portion of the column-shaped part (100).

[0030] At this time, when machining a hole or groove for a column-shaped part (100) inserted into the part fixing jig (20), the column-shaped part (100) may shake due to external force from an end mill tool or the like, so it is desirable to firmly fix the column-shaped part (100).

[0031] To this end, as shown in FIG. 4, a bolt (30) for fixing a part is inserted through the hollow portion of the column-shaped part (100) and fastened to the first female screw portion (21) of the jig (20) for fixing a part, and the head of the bolt (30) for fixing a part presses against the upper surface of the column-shaped part (100), thereby allowing the column-shaped part (100) to be maintained in a firmly fixed state.

[0032] As described above, the jig plate (10) is firmly fixed to the work table of a CNC milling machine (not shown), and the column-shaped part (100) is fixed by the part fixing jig (20) and the part fixing bolt (30). Then, the end mill of the CNC milling machine can move along preset coordinates to continuously or simultaneously perform hole (101) or groove (102) machining at preset positions of each column-shaped part (100).

[0033] Accordingly, a plurality of holes (101) can be formed at a pre-designed location of the column-shaped part (100) through hole machining as shown in FIG. 7 and FIG. 8, or an elongated groove (102) can be formed through groove machining as shown in FIG. 8.

[0034] Meanwhile, even if the above-mentioned jig (20) for fixing parts is inserted and fastened into each jig fixing groove (11) of the jig plate (10), holes (101) or grooves (102) can be machined at pre-designed positions of each column-shaped part (100). However, since the jig (20) for fixing parts may shake due to external force from an end mill tool or the like, it is desirable to firmly fix the jig (20) for fixing parts.

[0035] To this end, as shown in FIG. 6 as another embodiment of the present invention, a second female screw portion (12) is formed in the inner diameter portion of the jig fixing groove (11) of the jig plate (10), and a jig fixing male screw portion (22) that is screw-fastened to the second female screw portion (12) is formed in the lower outer diameter portion of the jig (20) for fixing parts, so that the jig (20) for fixing parts can also be maintained in a state where it is firmly fixed by screw-fastening the jig fixing male screw portion (22) to the second female screw portion (12).

[0036] Here, the assembly and usage process of the jig device for machining column-shaped parts according to the present invention is reviewed again in order as follows.

[0037] First, the above jig plate (10) is mounted on the machining table of a CNC milling machine (not shown).

[0038] To this end, a bolt is inserted through the jig mounting hole (13) of the jig plate (10) and fastened to the machining table of a CNC milling machine (not shown), thereby allowing the jig plate (10) to be arranged in a fixed state on the machining table of a CNC milling machine (not shown).

[0039] Next, a jig (20) for fixing parts is inserted and fastened into each jig fixing groove (11) of the jig plate (10).

[0040] Referring to FIG. 6, by screwing the jig fixing male screw (22) formed on the component fixing jig (20) into the second female screw (12) formed in each jig fixing groove (11) of the jig plate (10), the component fixing jig (20) can be arranged in a fixed state in each jig fixing groove (11) of the jig plate (10).

[0041] Next, a column-shaped part (100), which is the workpiece, is inserted and placed in a part fixing jig (20) fixed in each jig fixing groove (11) of the jig plate (10).

[0042] At this time, as shown in FIGS. 3 and 4, a bolt (30) for fixing a part is inserted through the hollow portion of the column-shaped part (100) and fastened to the first female screw portion (21) of the jig (20) for fixing a part, and the head of the bolt (30) for fixing a part presses against the upper surface of the column-shaped part (100), so that the column-shaped part (100) can be arranged in a firmly fixed state.

[0043] Next, the end mill (not shown) of the CNC milling machine moves along preset coordinates to continuously or simultaneously perform hole (101) or groove (102) machining at preset positions of each column-shaped part (100).

[0044] Accordingly, a plurality of holes (101) for use of the corresponding part may be formed at a pre-designed location of the column-shaped part (100) as shown in FIG. 7 and FIG. 8, or a long groove (102) having a predetermined depth along its length direction may be formed on the circumferential surface of the column-shaped part (100) as shown in FIG. 8.

[0045] In this way, a plurality of hollow column-shaped parts (100) that are to be processed are fixed at once on a jig plate (10) of a predetermined area using a jig (20) for fixing parts and a bolt (30), and then the end mill of a CNC milling machine moves along a preset coordinate to continuously or simultaneously perform hole (101) or groove (102) machining on a preset part of each column-shaped part (100), thereby allowing hole or groove machining for a plurality of column-shaped parts (100) to be performed at once, so that the machining and manufacturing productivity of the column-shaped parts (100) can be greatly improved, and the processing time can be shortened and the workability of the operator can be improved.

[0046] Although the present invention has been described in detail above as one embodiment, the scope of the present invention is not limited to the above-described embodiment, and various modifications and improvements by those skilled in the art using the basic concept of the present invention as defined in the following claims are also included within the scope of the present invention.

[0048] Meanwhile, a surface reinforcement layer may be formed on the jig (20) for fixing parts to prevent corrosion of the metal surface and improve wear resistance.

[0049] The coating material of this surface reinforcement layer is composed of 26 wt% cyclohexane carboxylic acid, 24 wt% propylamine, 10 wt% hafnium, 12 wt% magnesium organic acid, 8 wt% titanium oxide (TiO2), 12 wt% aluminum oxide (AIO2), and 8 wt% co-modifier, and the coating thickness can be formed to 9 μm.

[0050] Cyclohexane carboxylic acid and propylamine play roles in corrosion prevention, weather resistance, and discoloration prevention, while hafnium, as a transition metal element with wear resistance and weather resistance, plays a role in providing excellent water resistance and corrosion resistance.

[0051] Magnesium organic acid serves to impart alkali resistance and sliding properties to the surface of the coating film, while titanium oxide and aluminum oxide are added for purposes such as refractoriness and chemical stability.

[0052] The reason the ratio of the above-mentioned components and the coating thickness were numerically limited as described above is that, based on the analysis of test results after repeated failures by the inventor, the above ratios demonstrated optimal effects in improving weather resistance and wear resistance.

[0053] In addition, a foreign substance removal layer may be applied to the jig plate (10) to improve the resistance to contamination.

[0054] The composition of the above foreign substance removal layer contains sodium tripolyphosphate (STP) and alkyl taurate in a molar ratio of 1:0.01 to 1:2, and the total content of sodium tripolyphosphate (STP) and alkyl taurate is 2 to 13 weight% with respect to the total aqueous solution.

[0055] The above sodium tripolyphosphate (STP) and alkyl taurate are preferably in a molar ratio of 1:0.01 to 1:2. If the molar ratio deviates from the above range, the coating performance of the jig plate (10) is reduced, or moisture adsorption on the surface increases after coating, causing the coating film to be removed.

[0056] The sodium tripolyphosphate (STP) and alkyl taurate are preferably present in an amount of 2 to 13 weight percent of the total aqueous composition. If the amount is less than 2 weight percent, there is a problem that the coating performance of the jig plate (10) is reduced, and if the amount exceeds 13 weight percent, crystal precipitation is likely to occur due to an increase in the thickness of the coating film.

[0057] Meanwhile, as a method for applying the foreign substance removal layer to the jig plate (10), it is preferable to apply it by a spray method. In addition, the final coating film thickness of the jig plate (10) is preferably 800 to 1500 Å. If the thickness of the coating film is less than 800 Å, there is a problem of deterioration in the case of high-temperature heat treatment, and if it exceeds 1500 Å, there is a disadvantage that crystal precipitation is likely to occur on the coating surface.

[0058] In addition, the foreign matter removal layer can be prepared by adding 0.05 moles of sodium tripolyphosphate (STP) and alkyl taurate to 1000 ml of distilled water and then stirring.

[0059] The reason the ratio of the above components and the thickness of the coating film were numerically limited as described above is that, based on the analysis of test results after repeated failures by the inventor, the optimal anti-fouling coating effect was observed at the above ratios.

[0060] In addition, the jig plate (10) may be coated with an eco-friendly fragrance layer mixed with oil that helps with sterilization and stress relief for workers.

[0061] The mixing ratio of the fragrance material and oil in the eco-friendly fragrance layer is such that 3 to 5 weight percent of oil is mixed with 95 to 97 weight percent of the fragrance material, and the oil consists of 40 weight percent of Cistus oil and 60 weight percent of Cubeb oil.

[0062] Here, it is preferable that the oil be mixed in an amount of 3 to 5 weight percent relative to the fragrance material. If the oil mixing ratio is less than 3 weight percent, the effect is negligible, and if the oil mixing ratio exceeds 5 weight percent, the effect is not significantly improved, while economic efficiency is reduced. Cistus oil and Cubeb oil have good effects in relieving stress and eliminating psychological disorders. Therefore, as the fragrance material mixed with these oils is coated onto the jig plate (10), effects such as sterilizing the jig plate (10) and reducing the worker's stress can be obtained.

[0063] The reason for limiting the constituent components and the numerical values ​​of the mixing ratio for the fragrance material and oil is that, based on the analysis of test results after repeated failures by the inventor, the optimal effect was achieved at the aforementioned constituent components and numerical ratios. Explanation of the symbols

[0065] 10: Jig plate 11: Jig fixing groove 12: Second female thread 13: Jig mounting hole 20: Jig for fixing parts 21: First female thread 22: Male screw part for fixing the jig 30: Bolts for securing parts 100: Column-shaped part 101: Hall 102: Home

Claims

Claim 1 A jig device for processing column-shaped parts comprises: a jig plate (10) formed in the shape of a rectangular metal plate and having a plurality of jig fixing grooves (11) formed at predetermined intervals along the horizontal and vertical directions; and a part fixing jig (20) provided with a hollow structure having a first female screw portion (21) formed in the inner diameter portion and inserted and fastened into each jig fixing groove (11). and a part fixing bolt (30) inserted and fastened to the first female screw portion (21) of the part fixing jig (20) through the hollow portion of the column-shaped part (100) while the column-shaped part (100), which is the workpiece to be processed, is inserted and placed in the outer diameter portion of each part fixing jig (20); wherein the jig plate (10) is formed as a rectangular metal plate fixedly mounted on the work table of a CNC milling machine, and on the upper surface of the jig plate (10), the jig fixing grooves (11) are formed at equal intervals, with 12 along the horizontal direction and 3 along the vertical direction, for a total of 36, and a plurality of jig mounting holes (13) are formed at both ends and the middle portion of the jig plate (10) to fix the jig plate (10) to the work table of a CNC milling machine by bolt fastening, and the plurality of jig mounting holes (13) are the A jig plate (10) is arranged to be connected at multiple points to the machining table of a CNC milling machine, configured to suppress sagging and vibration during machining of the jig plate (10); a second female screw portion (12) is formed in the inner diameter portion of each jig fixing groove (11); the part fixing jig (20) is formed as a hollow jig inserted into the hollow portion of the column-shaped part (100); a jig fixing male screw portion (22) is formed in the lower outer diameter portion of the part fixing jig (20) to be screw-fastened to the second female screw portion (12) of the jig fixing groove (11); and a first female screw portion (21) is formed in the inner diameter portion of the part fixing jig (20) to which the part fixing bolt (30) is fastened.The above-mentioned part fixing jig (20) is screw-fixed to the jig plate (10) at the bottom by screw fastening between the jig fixing male screw portion (22) and the second female screw portion (12), and at the top forms a double screw fastening structure by screwing through the part fixing bolt (30) penetrating the column-shaped part (100) and the first female screw portion (21). The above-mentioned column-shaped part (100) is a hollow part having a circular or elliptical column shape, and is configured to be inserted into the outer diameter portion of the part fixing jig (20) so that the part fixing jig (20) is positioned in the inner diameter portion of the column-shaped part (100). The above-mentioned part fixing bolt (30) is inserted along the hollow portion of the column-shaped part (100) in the axial direction of the part fixing jig (20) and fastened to the first female screw portion (21). The head portion of the part fixing bolt (30) is the column shape The upper surface of the part (100) is directly pressed so that the inner diameter of the column-shaped part (100) is supported by the outer diameter of the part fixing jig (20) and the upper surface of the column-shaped part (100) is pressed by the head of the part fixing bolt (30) are simultaneously formed, and the inner diameter of the column-shaped part (100) is supported by the outer diameter of the part fixing jig (20) and the upper surface is pressed by the head of the part fixing bolt (30), and the part fixing jig (20) is fixed to the jig plate (10) by screw fastening between the jig fixing male screw part (22) and the second female screw part (12), so that shaking of the column-shaped part (100) is suppressed against external force generated during hole (101) machining or groove (102) machining by the end mill of the CNC milling machine, and each jig The horizontal and vertical pitches of the fixing grooves (11) are formed at equal intervals, and the coordinate system of the columns and rows of each jig fixing groove (11) is designed to correspond to the CNC program coordinates of the CNC milling machine.The above jig plate (10) is fixed to the machining table of the CNC milling machine, and a total of 36 column-shaped parts (100) are each inserted and arranged in a part-fixing jig (20) that is screw-fixed to each of the total 36 jig-fixing grooves (11). In a state where the upper surface of each column-shaped part (100) is pressed and fixed by the head of the part-fixing bolt (30), the end mill of the CNC milling machine is configured to continuously perform hole (101) or groove (102) machining at a pre-designed position of each of the total 36 column-shaped parts (100) while moving along the column and row coordinates of each jig-fixing groove (11) corresponding to the CNC program coordinates. The holes (101) are formed in multiple numbers at the pre-designed positions of the column-shaped parts (100), and the grooves (102) are formed as long grooves having a predetermined depth along the longitudinal direction on the circumferential surface of the column-shaped parts (100). A total of 36 component fixing jigs (20) are fixedly arranged on the jig plate (10) by screwing the jig fixing male screw portion (22) of the component fixing jig (20) into the second female screw portion (12) of each jig fixing groove (11) of the jig plate (10), and then a column-shaped component (100) is inserted and arranged into each of the total 36 component fixing jigs (20). Then, a component fixing bolt (30) is inserted through the hollow portion of each column-shaped component (100) and fastened to the first female screw portion (21) to press and fix the upper surface of each column-shaped component (100). In this state, the end mill of the CNC milling machine moves along a preset coordinate, and the hole (101) or groove (102) of each column-shaped component (100) A jig device for machining column-shaped parts characterized by enabling continuous machining. Claim 2 delete Claim 3 delete

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