Cutter bar device for machining long hole of tubular workpiece

Abstract

The cutter bar device for machining the long hole of the tubular workpiece comprises a long cutter bar which is fixedly connected with a telescopic part of a hollow rotary oil cylinder at the rear part of a machine tool into a whole through a universal chuck; the front end of the long cutter bar sequentially penetrates out of the hollow rotary oil cylinder and a long pipe clamped and fixed to a hollow chuck of a machine tool and is detachably and fixedly connected with a cutter bit at the outer end of the long pipe into a whole, and a plurality of cutters used for machining a shaft hole of the long pipe are evenly distributed on the outer wall of the cutter bit in the circumferential direction. According to the utility model, the structure that the long cutter bar of the long pipe is connected with the telescopic part of the hollow rotary oil cylinder at the rear part of the machine tool, penetrates out of the hollow rotary oil cylinder and is fixedly clamped on the hollow chuck of the machine tool and the cutter head provided with the cutter is arranged, so that the machining of the shaft hole of the long pipe is realized; the device overcomes the defect that the machining difficulty of the shaft hole of the long pipe workpiece is large, the machining range of the pipe workpiece is large, the device is particularly suitable for chambering machining of the long pipe with the small shaft hole and the large machining allowance, the machining efficiency is high, the production period is short, and the machining cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and in particular relates to a tool bar device for processing long holes in pipe workpieces. Background Art

[0002] When reaming long tube parts, due to the limited length of the boring tool bar, it is impossible to complete the processing of long tube parts with longer lengths. Moreover, before reaming the long tube, when the axial hole of the long tube is small, the tool bar diameter is large when the hole pulling method is used, and the tool bar cannot enter the interior of the long tube at all, resulting in great difficulty in reaming long rod parts with longer lengths and low processing efficiency. Therefore, in order to achieve reliable processing of long tube parts on a lathe, it is necessary to design a tool bar auxiliary processing device for processing long tube parts to solve the above technical problems. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a tool rod device for processing long holes in pipe workpieces. By setting a structure that is connected to the telescopic part of the hollow rotary oil cylinder at the rear of the machine tool and passes through the hollow rotary oil cylinder and the long tube fixed on the hollow chuck of the machine tool and is connected to the tool head installed with the tool, the processing of the long tube axial hole is realized, which solves the disadvantage that the processing of the axial hole of the pipe workpiece with a longer size is difficult. The processing range of the pipe workpiece is large, and it is particularly suitable for the expansion processing of the long tube axial hole with a small processing allowance and a large processing allowance. The processing efficiency is high, the production cycle is short, the processing cost is low, and the use value is high.

[0004] The technical solution adopted by the present invention is as follows: a tool rod device for processing long holes in pipe workpieces, comprising a long tool rod, which is fixedly connected to the telescopic part of the hollow rotary oil cylinder at the rear of the machine tool through a universal chuck, and the front end of the long tool rod successively passes through the hollow rotary oil cylinder and the long tube fixed on the hollow chuck of the machine tool and is detachably fixedly connected to the tool head at the outer end of the long tube, and a plurality of tools for processing the axial hole of the long tube are evenly distributed on the circumference of the outer wall of the tool head.

[0005] Among them, the long knife rod is a hollow tubular structure with a larger aperture at the front end pipe mouth than the aperture in the middle and rear sections. A cooling hole connected to the axial hole of the long knife rod is formed on the end face of the knife head, and the cooling tube end insertion part that penetrates into the interior of the long knife rod from the rear end is adapted to the cooling hole of the knife head.

[0006] Furthermore, the connecting column at the rear end of the cutter head is adapted to be inserted into the inner hole at the front end of the long knife rod, and the connecting column and the outer wall at the rear end of the long knife rod are both provided with through holes of corresponding positions, and the bolts pass through the through holes at the connecting column and the rear end of the long knife rod and are adapted to be connected with the locking nut, thereby realizing a detachable fixed connection between the cutter head and the long knife rod.

[0007] Furthermore, the cross-sectional shape of the tool is a triangular structure, a plurality of mounting grooves are evenly distributed on the outer circumferential wall of the tool head, and the root of the tool with the cutting edge facing outward is inserted and adapted to fit into the mounting groove and is welded and fixedly connected to the tool as a whole.

[0008] Furthermore, the cutter head is cylindrical or a straight column with rounded corners.

[0009] The advantages of this utility model compared with the prior art are:

[0010] 1. This technical solution achieves the machining of long tube axial holes by providing a structure that is connected to the telescopic part of the hollow rotary oil cylinder at the rear of the machine tool and passes through the hollow rotary oil cylinder and is connected to the long tube arbor fixed on the hollow chuck of the machine tool and the cutter head with the tool installed. This solves the disadvantage of the difficulty in machining axial holes of long tube workpieces. It has a wide machining range for tube workpieces and is particularly suitable for reaming of long tube axial holes with small shaft holes and large machining allowances.

[0011] 2. This technical solution adopts a structure in which a long hollow tool bar is matched with a tool head with a cooling hole in the middle to provide cooling conditions for the axial hole processing of long tube workpieces, ensuring the quality and service life of the tool;

[0012] 3. The cutter head and the long tool rod of this technical solution adopt a detachable connection structure, which provides conditions for the expansion processing of equal diameter holes;

[0013] 4. This technical solution has a simple structure, novel design, convenient and quick replacement of the cutter head, high processing efficiency, short production cycle, low processing cost and high use value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the main view of the structure of the utility model;

[0015] Figure 2 This is a top view of the structure of the utility model. DETAILED DESCRIPTION

[0016] The following is a combination of the embodiments of the present invention Figure 1-2 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0017] It should be noted that, in this document, unless otherwise stated, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate positions or relationships based on those shown in the accompanying drawings. These are intended only to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] As used herein, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the elements.

[0019] Tool bar device for processing long holes in pipe workpieces, such as Figure 1-2 As shown, it includes a long tool rod 1, which is fixedly connected to the telescopic part of the hollow rotary oil cylinder at the rear of the machine tool through a universal chuck, and the front end of the long tool rod 1 passes through the hollow rotary oil cylinder and the long tube fixed on the hollow chuck of the machine tool in turn, and is detachably fixed to the cutter head 2 at the outer end of the long tube, and a plurality of tools 3 for processing the axial hole of the long tube are evenly distributed on the circumference of the outer wall of the cutter head 2; in the above structure, the long tool rod 1 connected to the telescopic part of the hollow rotary oil cylinder at the rear of the machine tool and passing through the hollow rotary oil cylinder and the long tube fixed on the hollow chuck of the machine tool and the cutter head 2 equipped with the tool 3 are provided, so that the processing of the axial hole of the long tube is realized, which solves the problem that the axial hole processing of the pipe workpiece with a longer size is difficult, has a large processing range for the pipe workpiece, and is particularly suitable for the reaming processing of the long tube axial hole with a small processing allowance;

[0020] The specific detachable fixed connection structure of the long tool rod 1 and the cutter head 2 is as follows: the long tool rod 1 is a hollow tubular structure with a larger aperture at the front end than the aperture in the middle and rear sections. The end face of the cutter head 2 is provided with a cooling hole 5 connected to the axial hole of the long tool rod 1, and the cooling pipe end insert inserted into the interior of the long tool rod 1 by the rear end is adapted to the cooling hole 5 of the cutter head 2. The hollow structure of the long tool rod 1 and the cutter head 2 with the cooling hole 5 in the middle provide cooling for the axial hole processing of long tube workpieces. Conditions, to ensure the quality and service life of the tool 3; specifically, the connecting column 4 at the rear end of the cutter head 2 is adapted to be inserted into the inner hole at the front end of the long tool rod 1, and the connecting column 4 and the outer wall of the rear end of the long tool rod 1 are both formed with through holes corresponding to the positions, and the bolt 7 passes through the through holes of the connecting column 4 and the rear end of the long tool rod 1 and is adapted to be connected with the locking nut to realize the detachable connection between the cutter head 2 and the long tool rod 1. In the above structure, the cutter head 2 and the long tool rod 1 adopt a detachable connection structure, which provides conditions for the expansion processing of equal-diameter holes;

[0021] The specific shape and fixing structure of the tool 3 are as follows: the cross-sectional shape of the tool 3 is a triangular structure, and a plurality of mounting grooves 6 are evenly distributed on the outer circumferential wall of the tool head 2. The root of the tool 3 with the cutting tip facing outward is inserted into the mounting groove 6 and is welded and fixed to the tool 3 as a whole, and the tool 3 is made of cemented carbide material.

[0022] The cutter head 2 is cylindrical or a straight column with rounded corners.

[0023] The technical solution has a simple structure, a novel design, and the cutter head 2 is easy and quick to replace, has high processing efficiency, a short production cycle, low processing cost, and high use value.

[0024] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0025] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A tool bar device for processing long holes in pipe workpieces, characterized by: The invention comprises a long tool rod (1), wherein the long tool rod (1) is fixedly connected to the telescopic part of the hollow rotary oil cylinder at the rear of the machine tool through a universal chuck, and the front end of the long tool rod (1) passes through the hollow rotary oil cylinder and the long tube fixed on the hollow chuck of the machine tool in sequence and is detachably fixedly connected to the tool head (2) at the outer end of the long tube, and a plurality of tools (3) for processing the axial hole of the long tube are evenly distributed on the circumference of the outer wall of the tool head (2).

2. The tool bar device for machining long holes in pipe workpieces according to claim 1, characterized in that: The long blade rod (1) is a hollow tubular structure with a larger aperture at the front end than at the middle and rear end. A cooling hole (5) communicating with the axial hole of the long blade rod (1) is formed on the end face of the blade head (2), and a cooling pipe end insert inserted from the rear end of the long blade rod (1) is adapted to fit into the cooling hole (5) of the blade head (2).

3. The tool bar device for machining long holes in pipe workpieces according to claim 2, characterized in that: The connecting column (4) at the rear end of the cutter head (2) is adapted to be inserted into the inner hole at the front end of the long cutter rod (1), and the outer walls of the rear ends of the connecting column (4) and the long cutter rod (1) are both provided with through holes corresponding to the positions, and the bolt (7) passes through the through holes at the rear ends of the connecting column (4) and the long cutter rod (1) and is adapted to be connected with the locking nut, thereby realizing a detachable fixed connection between the cutter head (2) and the long cutter rod (1).

4. The tool bar device for machining long holes in pipe workpieces according to claim 1, characterized in that: The cross-section of the tool (3) is triangular, and a plurality of mounting grooves (6) are evenly distributed on the outer circumferential wall of the tool head (2). The root of the tool (3) with the cutting edge facing outward is inserted and adapted to fit into the mounting groove (6) and is welded and fixedly connected to the tool (3) as a whole.

5. The tool bar device for machining long holes in pipe workpieces according to any one of claims 1 to 4, characterized in that: The cutter head (2) is cylindrical or a straight column with rounded corners.

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