Cutting boring bar with simultaneous installation and position adjustment of internal and external bytes

Abstract

The present invention relates to a boring bar for cutting capable of simultaneously mounting and positioning inner and outer diameter bits, and more specifically, to a boring bar capable of adjusting the length of a bit, wherein a body (10) is configured such that its upper portion is coupled to a processing device, and first and second insertion holes (11, 11a) are formed on one side of the body's exterior that are spaced apart from each other and have the same or different shapes and depths, and inner and outer diameter bits (13, 13a) of different shapes are provided so that the first and second insertion holes (11, 11a) are respectively inserted therein, and first and second adjustment holes (15, 15a) extending from the first and second insertion holes (11, 11a) are formed on the other side of the body (10) where the first and second insertion holes (11, 11a) are formed, and first and second adjustment members (17, 17a) are formed in the first and second adjustment holes (15, 15a). The invention is a useful invention that allows two operations (inner and outer diameter machining) to be performed with a single setting (fastening, etc.), thereby providing convenience, reducing machining time, reducing worker fatigue, and maximizing productivity, and also improving precision by minimizing the error range during machining, as it does not require replacement whenever machining conditions change.

Description

Technology Field

[0001] The present invention relates to a cutting boring bar capable of simultaneously mounting and positioning inner and outer diameter bits. More specifically, it is a technology that enables rapid operation without replacing the bits with a single feed to match the machining conditions of a workpiece by mounting separate inner and outer diameter bits for machining under different conditions of the workpiece, thereby allowing for general-purpose use, which reduces tool change time and increases precision. Background Technology

[0002] Typically, boring refers to a cutting process in which a hole drilled with a drill is enlarged or, if the inner wall surface of the hole is not smooth, a boring bar is used to cut the hole to expand its diameter or improve the surface roughness of the inner wall.

[0003] Such boring is typically performed using a boring bar, and in the case of the boring bar, a cutting tool is connected to one side of the body to substantially come into contact with the workpiece and perform the processing.

[0005] However, conventional boring bars have a problem in that, when machining a workpiece that requires different inner and outer diameters after connecting a cutting tool, only the inner or outer diameter can be processed in a single movement, resulting in a large amount of processing time.

[0006] In other words, conventional boring bars reduced overall productivity due to the long replacement time required for either the entire boring bar or the bit replacement, and also had the problem of reduced precision as the margin of error could increase due to the replacement.

[0008] First, if we look at conventional technologies,

[0009] Publication No. 10-2023-0133027 (Patent) is a technology relating to a boring bar fixing structure of a machine tool comprising a boring bar on which a boring tool is mounted and a base holder into which the boring bar is inserted and fixed, wherein the boring bar is structured such that a length marking scale line is provided on its surface.

[0011] Technology regarding a boring bar, registered under No. 20-0206718 (practical), comprising a boring bar equipped with an insertion groove for inserting and fixing a bite bar and a fixing hexagonal bolt, wherein the diameter of each stage equipped with the insertion groove for inserting and fixing the bite bar and the fixing hexagonal bolt is configured to gradually increase, and inclined surfaces are provided between each stage to facilitate the discharge of cutting pieces.

[0013] Publication No. 10-2016-0038257 (Patent) is a technology relating to a boring bar comprising a processing means equipped with a cutting tool capable of processing a material at one end, a mounting part inserted into and mounted on a machine tool at one end, and a holder part inserted at the other end to fix the processing means by adjusting the length at which the processing means is exposed.

[0015] Patent No. 10-1578330 (Patent) A boring bar for processing a workpiece, wherein the boring bar comprises a shank mounted on a tool holder of a machine tool, a boring head coupled to one side of the shank and having a cutting tip for cutting a workpiece attached thereto, and a screw that moves the position of the boring head, wherein a groove is formed on one side of the outer surface of the screw and a protrusion of a guide support is fitted into the groove so that the position is maintained constant even when the screw is rotated, and this is a technology for a boring bar capable of adjusting the position of the cutting tip.

[0017] The aforementioned conventional technologies generally focus on position control by configuring only a single byte.

[0018] In other words, since only one bit is mounted on the boring bar, if the machining conditions of the workpiece are not met through position adjustment, the inconvenience of having to replace the entire bit or the entire boring bar is unavoidable.

[0019] Looking at other forms of technology, multiple bits are configured to face different directions at different heights; however, due to their structure, the position of the bits cannot be adjusted, so they still have the problem of requiring the bits or boring bars to be replaced to suit the conditions of the workpiece. The problem to be solved

[0020] The present invention was devised to solve the problems of the aforementioned conventional technology. It focuses on providing a cutting boring bar capable of simultaneous mounting and position adjustment of inner and outer diameter bits, which is configured with inner and outer diameter bits having different shapes and sizes, and allows either one to be used depending on the machining conditions of the workpiece to be machined. This eliminates the need for continuous replacement of the boring bar, thereby shortening machining time and reducing operator fatigue while increasing productivity. means of solving the problem

[0021] Accordingly, the present invention relates to a boring bar capable of adjusting the length of a bit, wherein a body (10) is configured such that its upper portion is coupled to a processing device, and first and second insertion holes (11, 11a) are formed on one side of the body's exterior, spaced apart from each other and having the same or different shapes and depths, and inner and outer diameter bits (13, 13a) of different shapes are provided and inserted into the first and second insertion holes (11, 11a), respectively, and on the other side of the body (10) where the first and second insertion holes (11, 11a) are formed, first and second adjustment holes (15, 15a) extending from the first and second insertion holes (11, 11a) are formed, and first and second adjustment members (17, 17a) are configured in the first and second adjustment holes (15, 15a), and the first and second insertion holes (11, 11a) and The technical feature is that a first and second fixing member (12, 12a) for fixing an inner and outer diameter bit (13, 13a) inserted into the first and second insertion holes (11, 11a) is configured on the other side of a body (10) in which the first and second adjustment holes (15, 15a) are formed, so that the position of the inner and outer diameter bit (13, 13a) can be selectively adjusted according to the processing conditions of the workpiece.

[0022] The technical feature is that the first and second fixing members (12, 12a) are composed of multiple members, and the outer sides of the inner and outer diameter bits (13, 13a) are each uniformly pressed and fixed at a certain distance apart.

[0023] The technical feature of the second insertion hole (11a) is that its lower portion is formed to be completely open. Effects of the invention

[0024] According to the cutting boring bar of the present invention, which allows for the simultaneous mounting and position adjustment of inner and outer diameter bits, the original purpose of the boring bar is maintained, and by configuring inner and outer diameter bits having different shapes and sizes according to the machining conditions of the workpiece to be machined, two operations (inner and outer diameter machining) can be performed with a single setting (such as fastening), thereby providing convenience, shortening machining time, reducing operator fatigue, and maximizing productivity. Furthermore, since there is no need to replace the bits whenever machining conditions change, the margin of error during machining can be minimized, thereby improving precision. This is a useful invention. Brief explanation of the drawing

[0025] FIG. 1 is a perspective view showing a preferred embodiment of the present invention. FIG. 2 is a perspective view showing a preferred embodiment of the present invention. FIG. 3 is a front view showing the first and second fixing members of the present invention not configured. FIG. 4 is a front view showing the configuration of the first and second fixing members of the present invention. FIG. 5 is a right side view showing that the first and second adjusting members of the present invention are not configured. FIG. 6 is a right side view showing the configuration of the first and second adjusting members of the present invention. FIG. 7 is a plan view illustrating a preferred embodiment of the present invention. FIG. 8 is a cross-sectional view illustrating a preferred embodiment of the present invention. FIG. 9 is an exploded view showing a preferred embodiment of the present invention. FIG. 10 is an operating state diagram showing a preferred embodiment of the present invention. Specific details for implementing the invention

[0026] The present invention provides a cutting boring bar capable of simultaneous mounting and position adjustment of inner and outer diameter bits, which allows for general-purpose use by mounting separate bits for machining a workpiece under different conditions, thereby reducing tool change time and increasing precision. This enables rapid operation without replacing the bits with a single feed according to the machining conditions of the workpiece.

[0028] Hereinafter, the preferred configuration and operation of the present invention for achieving the above objective in relation to the attached drawings will be described with reference to FIGS. 1 to 10 as follows.

[0030] First, before describing the present invention, let us examine its configuration with reference to FIGS. 1 to 5.

[0031] In a boring bar capable of adjusting the length of a bit, a body (10) is configured such that its upper portion is coupled to a processing device, and on one side of the body, first and second insertion holes (11, 11a) are formed that are spaced apart from each other and have the same or different shapes and depths, and inner and outer diameter bits (13, 13a) of different shapes are provided so that the first and second insertion holes (11, 11a) are respectively inserted therein, and on the other side of the body (10) where the first and second insertion holes (11, 11a) are formed, first and second adjustment holes (15, 15a) extending from the first and second insertion holes (11, 11a) are formed, and first and second adjustment members (17, 17a) are configured in the first and second adjustment holes (15, 15a), and the first and second insertion holes (11, 11a) and On the other side of the body (10) in which the first and second adjustment holes (15, 15a) are formed, first and second fixing members (12, 12a) for fixing the inner and outer diameter bits (13, 13a) inserted into the first and second insertion holes (11, 11a) are configured so that the position of the inner and outer diameter bits (13, 13a) can be selectively adjusted according to the processing conditions of the workpiece.

[0033] To explain this in more detail, the body (10) is configured to substantially fix the bits while also being coupled to a processing device, and is made of a material having relatively high rigidity, and an arbor is configured on the upper part to substantially be coupled to the processing device. The arbor can typically be configured in various structures for coupling to the processing device.

[0034] Meanwhile, as shown in FIG. 9, first and second insertion holes (11, 11a) are formed on one side of the body (10) at a mutually spaced apart and having a certain depth, respectively. The first insertion hole (11) is into which an inner diameter bit (13) for machining the inner diameter of a workpiece is inserted, and the second insertion hole (11a) is into which an outer diameter bit (13a) for machining the outer diameter of a workpiece is inserted.

[0035] At this time, the first and second insertion holes (11, 11a) may have the same or different shapes and depths, which are formed to correspond to the outer shape of the inner and outer diameter bits (13, 13a) so that the bits can be firmly fixed.

[0036] The first and second insertion holes (11, 11a) can be formed in a circular shape, a semicircle, a polygon, etc., and can be formed in the same or different shapes. In the present invention, the first insertion hole (11) is formed in a circular shape and the second insertion hole (11a) is formed in a square shape, so they are formed in different shapes and are shown to have the same depth.

[0038] Meanwhile, as shown in FIG. 9, the inner and outer diameter bits (13, 13a) are formed such that the shape of the outer shape inserted into the first and second insertion holes (11, 11a) corresponds to the shape of the bits, and are inserted into the first and second insertion holes (11, 11a), respectively.

[0039] That is, the first and second insertion holes (11, 11a) are formed in a circular and square shape, respectively, and are formed to correspond thereto and are inserted, and a tip that substantially contacts and processes the workpiece is connected to the end that is not inserted into the first and second insertion holes (11, 11a), which is not separately illustrated in the present invention.

[0040] As described above, the inner and outer diameter bits (13, 13a) of the present invention are each configured to be spaced apart from each other on the body (10), so that the inner diameter or outer diameter can be freely machined according to the machining conditions of the workpiece, thereby providing convenience in use.

[0041] In addition, the second insertion hole (11a) is formed so that its lower end is completely open, thereby enabling quick replacement when inserting or removing the outer diameter bit (13a).

[0043] Here, as illustrated in FIG. 5 or 9, on the other side of the body (10) in which the first and second insertion holes (11, 11a) are formed, a first and second adjustment hole (15, 15a) is formed into which a first and second adjustment member (17, 17a) that extends from the first and second insertion holes (11, 11a) and can adjust the position of the inner and outer diameter bits (13, 13a) is inserted.

[0044] In other words, the first adjusting member (17) can adjust the position of the inner diameter bit (13), and the second adjusting member (17a) can adjust the position of the outer diameter bit (13a). The adjustment method is configured such that when rotated in one direction, the first and second adjusting members (17, 17a) advance, and when rotated in the other direction, they retract, thereby allowing the positions of the inner and outer diameter bits (13, 13a) to be adjusted.

[0045] At this time, as illustrated in FIG. 10, it is preferable to achieve a fine loosening of the first and second fixing members (12, 12a) to be described below when adjusting the position of the inner and outer diameter bits (13, 13a). The first and second adjusting members (17, 17a) have screw threads formed on their outer sides for fine adjustment of the inner and outer diameter bits (13, 13a), and screw threads formed on the inner sides of the first and second adjusting holes (15, 15a), so that they are screw-coupled to each other, thereby enabling fine adjustment of the inner and outer diameter bits (13, 13a).

[0047] When the inner and outer diameter bits (13, 13a) are inserted into the first and second insertion holes (11, 11a) in this way, the outer side of the inner and outer diameter bits (13, 13a) is fixed by pressing them together through the first and second fixing members (12, 12a), and then used according to the processing conditions of the workpiece. When some processing conditions change, the position of the inner and outer diameter bits (13, 13a) can be adjusted using the first and second adjustment parts (17, 17a) coupled to the first and second adjustment holes (15, 15a).

[0048] At this time, if it is difficult to adjust the position of the inner and outer diameter bits (13, 13a) due to the strong tightening of the first and second fixing members (12, 12a), the first and second fixing members (12, 12a) can be slightly loosened, the position of the inner and outer diameter bits (13, 13a) can be adjusted, and then the first and second fixing members (12, 12a) can be strongly tightened again to fix them.

[0050] The structure of the present invention allows for the internal diameter bit (13) and the external diameter bit (13a) to be configured on a single body (10) and selectively adjusted according to the processing conditions of the workpiece, thereby minimizing errors that may occur during the replacement process of the bit or boring bar and improving precision through precision machining. Furthermore, since the bit or boring bar does not need to be replaced every time according to the processing conditions of the workpiece, it is possible to improve work convenience, shorten processing time, reduce worker fatigue, and increase productivity.

[0052] In addition, as shown in FIGS. 1 to 5, the first and second fixing members (12, 12a) are configured in multiple numbers on the front surface of the body (10), and the outer sides of the inner and outer diameter bits (13, 13a) are each uniformly pressed and fixed at regular intervals, thereby maximizing the fixing force of the inner and outer diameter bits (13, 13a), so that shaking can be completely eliminated when processing a workpiece. As shown in FIG. 3, it is preferable that the first and second fixing holes (14, 14a) are formed in the body (10) to which the first and second fixing members (12, 12a) are coupled to fix or release the inner and outer diameter bits (13, 13a).

[0054] According to the cutting boring bar of the present invention, which allows for the simultaneous mounting of bits and adjustment of the position of each bit, the original purpose of the boring bar is maintained, and by configuring inner and outer diameter bits having different shapes and sizes according to the machining conditions of the workpiece to be machined, two operations (inner and outer diameter machining) can be performed with a single setting (such as fastening), thereby providing convenience, shortening machining time, reducing operator fatigue, and maximizing productivity. Furthermore, since there is no need to replace the bits whenever machining conditions change, the margin of error during machining can be minimized, thereby improving precision. This is a useful invention. Explanation of the symbols

[0055] 10 : Body 11 : First insertion groove 11a : Second insertion groove 12: First fixed member 12a : Second fixed member 13: Internal diameter bit 13a : External diameter cutting tool 14: First fixing hole 14a : Second fixing hole 15 : 1st adjustment hole 15a : Second adjustment hole 17 : First adjusting member 17a : Second adjustment member

Claims

Claim 1 In a boring bar with adjustable bit length, A body (10) is configured such that the upper part is combined with a processing device, and First and second insertion holes (11, 11a) are formed on one side of the exterior of the above body, spaced apart from each other, and having the same or different shapes and depths. Inner and outer diameter bits (13, 13a) of different shapes are provided so that the first and second insertion holes (11, 11a) are respectively inserted, and A first and second adjustment hole (15, 15a) extending from the first and second insertion hole (11, 11a) is formed on the other side of the body (10) in which the first and second insertion hole (11, 11a) is formed, and a first and second adjustment member (17, 17a) is configured in the first and second adjustment hole (15, 15a). On the other side of the body (10) in which the first and second insertion holes (11, 11a) and the first and second adjustment holes (15, 15a) are formed, first and second fixing members (12, 12a) for fixing inner and outer diameter bits (13, 13a) inserted into the first and second insertion holes (11, 11a) are configured. A cutting boring bar capable of simultaneous mounting and position adjustment of inner and outer diameter bits, characterized by being configured to selectively adjust the positions of the inner and outer diameter bits (13, 13a) according to the processing conditions of the workpiece. Claim 2 In Article 1, The above first and second fixing members (12, 12a) are composed of multiple units, A cutting boring bar capable of simultaneous mounting and position adjustment of inner and outer diameter bits, characterized by the outer sides of the inner and outer diameter bits (13, 13a) being uniformly pressed and fixed at a certain distance apart. Claim 3 In Article 1, The second insertion hole (11a) above is, A cutting boring bar capable of simultaneous mounting and position adjustment of inner and outer diameter bits, characterized by having a completely open lower section.

Images