A rough-fine boring quick conversion boring cutter

Abstract

The utility model discloses a rough fine boring quick conversion boring tool relates to vehicle processing technical field, including boring tool rest and boring tool head, and one end of boring tool head rotatable setting in boring tool rest, and the other end is equipped with fine boring tool and a pair of rough boring tool, and fine boring tool and a pair of rough boring tool are set up on boring tool head with the central axis of boring tool head 120 DEG circumferential, and the central axis of boring tool head is eccentric with the rotation center line of boring mill, and is provided with the positioning cone hole corresponding setting of fine boring tool and a pair of rough boring tool on boring tool head, and is provided with the tool head fixed bolt on boring tool rest, and is provided with the positioning notch on boring tool rest, and the positioning notch penetrates boring tool rest one end, and is equipped with positioning steel ball, return spring and locking screw plug in the positioning notch, and positioning steel ball can slide to one of the positioning cone hole on boring tool head, and the problem of commercial vehicle rear axle housing boring efficiency reduction caused by the rough boring tool and fine boring tool unable to complete quick switching when the boring mill of present is used is solved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle processing technology, specifically to a roughing and finishing boring tool that allows for quick conversion between roughing and finishing. Background Technology

[0002] The rear axle housing of a commercial vehicle is a shell made of thick steel plate through processes such as stamping and welding. During installation, bores need to be drilled at both ends of the housing to facilitate subsequent assembly. Currently, boring is generally performed on the rear axle housing of commercial vehicles using a boring machine.

[0003] However, current boring machines have some drawbacks in use, as follows:

[0004] First, when switching between the roughing and finishing boring tools in a boring machine, the tools need to be re-clamped. This makes it impossible for the roughing and finishing boring tools in the current boring machine to switch quickly, which in turn reduces the boring efficiency of the rear axle housing of commercial vehicles.

[0005] Second, most boring machines currently use single-blade tools, which cannot perform chamfering and end-face machining on workpieces. This results in the need to change tools and re-clamp multiple times when machining the rear axle housing of commercial vehicles, affecting the machining accuracy of the boring holes in the rear axle housing of commercial vehicles.

[0006] Therefore, there is an urgent need for a boring tool that can quickly switch between roughing and finishing boring. Utility Model Content

[0007] Based on this, and in response to the above problems, this utility model proposes a rapid conversion boring tool for roughing and finishing, which solves the problem of reduced boring efficiency of commercial vehicle rear axle housings caused by the inability to quickly switch between roughing and finishing boring tools when using current boring machines.

[0008] The technical solution of this utility model is:

[0009] A roughing and finishing boring tool with quick conversion includes a boring tool holder and a boring tool head. The boring tool holder can be installed on a boring machine. One end of the boring tool head is rotatably disposed in the boring tool holder, and the other end is provided with a finishing boring tool and a pair of roughing boring tools. The finishing boring tool and the pair of roughing boring tools are arranged circumferentially on the boring tool head at 120° around the central axis of the boring tool head, and are detachably connected to the boring tool head. The central axis of the boring tool head is eccentrically disposed with respect to the rotation center line of the boring machine.

[0010] The boring head has positioning cone holes corresponding to the fine boring tool and a pair of rough boring tools respectively. The boring tool holder is equipped with a tool head fixing bolt. One end of the tool head fixing bolt passes through the boring tool holder and is threadedly connected to the boring tool holder. The end of the tool head fixing bolt can be inserted into one of the positioning cone holes on the boring head.

[0011] The boring bar holder is provided with a positioning slot that extends through one end of the boring bar holder. The positioning slot contains a positioning steel ball, a return spring, and a locking plug. The positioning steel ball is located in the positioning slot and is slidably connected to the positioning slot. The locking plug is located on the boring bar holder, with one end extending into the positioning slot and threadedly connected to the positioning slot. One end of the return spring contacts the positioning steel ball, and the other end contacts the locking plug. The positioning steel ball can slide into one of the positioning tapered holes on the boring bar head.

[0012] Preferably, the boring bar holder is provided with a mounting slot that extends through both ends of the boring bar holder. One end of the boring bar head is set in the mounting slot and is rotatably connected to the mounting slot. One end of the boring bar head fixing bolt extends into the mounting slot, and the positioning slot is connected to the mounting slot.

[0013] Preferably, the boring bar holder is provided with a rear cover plate, which is set on the boring bar holder and is detachably connected to the boring bar holder by fixing screws. The rear cover plate is fitted to one end of the mounting slot to close the mounting slot. The end of the boring bar head located in the mounting slot contacts the rear cover plate and is rotatably connected to the rear cover plate.

[0014] Preferably, the boring head is provided with a pair of O-rings, which are embedded in and detachably connected to the boring head. The pair of O-rings are respectively fitted to both ends of the mounting groove and contact the inner wall of the mounting groove.

[0015] Preferably, the other end of the boring head is provided with a tool cover, which is detachably connected to the boring head by three connecting bolts.

[0016] Preferably, a first mounting port is provided between the boring head and the tool cover to mate with a precision boring tool. The first mounting port passes through the boring head, and one end of the precision boring tool is installed in the first mounting port and rotatably connected to the first mounting port. A threaded connection part is provided in the first mounting port. A precision boring adjusting screw is provided at the end of the precision boring tool located in the first mounting port. One end of the precision boring adjusting screw passes through the threaded connection part and is threadedly connected to the end of the precision boring tool. The precision boring adjusting screw is threadedly connected to the threaded connection part. A precision boring clamping bolt is provided on the tool cover. One end of the precision boring clamping bolt passes through the tool cover and is threadedly connected to the tool cover. The end of the precision boring clamping bolt is pressed against the precision boring tool.

[0017] Preferably, a pair of second mounting ports are provided between the boring head and the tool cover to cooperate with a pair of rough boring tools. One end of each pair of rough boring tools is respectively disposed in the second mounting port and slidably connected to the second mounting port. The end of the rough boring tool located in the second mounting port is provided with an inclined surface. A pair of locking adjustment members are respectively provided on the tool cover to cooperate with the pair of rough boring tools. The pair of locking adjustment members are used to adjust and lock the pair of rough boring tools.

[0018] Preferably, the locking adjustment component includes a coarse boring clamping bolt and a coarse boring adjusting screw. One end of the coarse boring clamping bolt passes through the tool cover and is threadedly connected to the tool cover. The end of the coarse boring clamping bolt is pressed against the coarse boring tool. One end of the coarse boring adjusting screw passes through the tool cover and is threadedly connected to the tool cover. The end of the coarse boring adjusting screw abuts against the inclined surface on the coarse boring tool.

[0019] Preferably, the boring bar holder is provided with a face boring bar, one end of which is inserted into the boring bar holder and slidably connected to it. The end of the face boring bar inserted into the boring bar holder has an inclined surface. The boring bar holder is provided with a pair of face clamping bolts for fixing the face boring bar. One end of the pair of face clamping bolts passes through the boring bar holder and is threadedly connected to it. The ends of the pair of face clamping bolts are respectively pressed against the face boring bar. The boring bar holder is provided with a face adjusting screw for adjusting the face boring bar. One end of the face adjusting screw passes through the boring bar holder and is threadedly connected to it. The end of the face adjusting screw abuts against the inclined surface on the face boring bar.

[0020] Preferably, the boring bar holder is equipped with a chamfering cutter. One end of the chamfering cutter is inserted into the boring bar holder and is slidably connected to it. The end of the chamfering cutter inserted into the boring bar holder has an inclined surface. The boring bar holder is equipped with a pair of chamfering clamping bolts for fixing the chamfering cutter. One end of the pair of chamfering clamping bolts passes through the boring bar holder and is threadedly connected to it. The ends of the pair of chamfering clamping bolts are respectively pressed against the chamfering cutter. The boring bar holder is equipped with a chamfering adjusting screw for adjusting the chamfering cutter. One end of the chamfering adjusting screw passes through the boring bar holder and is threadedly connected to it. The end of the chamfering adjusting screw abuts against the inclined surface on the chamfering cutter.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] In use, this invention allows for easy disengagement of the boring head from the positioning cone hole by loosening the head fixing bolt, followed by rotating the boring head. During rotation, the boring head compresses the positioning steel ball, disengaging it from the positioning cone hole, thus enabling rotation. Each 120° rotation of the boring head completes a tool switch. After switching to the desired tool, the positioning steel ball re-enters the positioning cone hole, and tightening the head fixing bolt secures the boring tool. This achieves rapid switching between roughing and finishing tools, solving the problem of reduced boring efficiency in commercial vehicle rear axle housings caused by the inability to quickly switch between roughing and finishing tools on current boring machines. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a partial cross-sectional view of a roughing and finishing boring tool described in this embodiment of the present invention. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the structure of a roughing and finishing boring tool as described in an embodiment of this utility model;

[0026] Figure 3 This is a partial cross-sectional view of a roughing and finishing boring tool described in this embodiment of the present invention. Figure 2 ;

[0027] Figure 4 This is as described in the embodiments of this utility model. Figure 2 A magnified schematic diagram of a partial cross-section of the AA structure;

[0028] Figure 5 This is as described in the embodiments of this utility model. Figure 2 A magnified cross-sectional view of part of BB;

[0029] Explanation of reference numerals in the attached figures:

[0030] 10-Bore holder, 11-Bore head, 12-Fine boring tool, 13-Rough boring tool, 14-Positioning taper hole, 15-Tool head fixing bolt, 16-Positioning groove, 17-Positioning steel ball, 18-Return spring, 19-Locking plug, 20-Mounting groove, 21-Rear cover plate, 22-Fixing screw, 23-O-ring seal, 24-Tool cover, 25-Connecting bolt, 26-First mounting port, 27-Threaded connection, 28-Fine boring adjusting screw, 29-Fine boring clamping bolt, 30-Second mounting port, 31-Locking adjustment component, 32-Rough boring clamping bolt, 33-Rough boring adjusting screw, 34-End face boring tool, 35-End face clamping bolt, 36-End face adjusting screw, 37-Chamfering tool, 38-Chamfering clamping bolt, 39-Chamfering adjusting screw. Detailed Implementation

[0031] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0032] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0035] In this embodiment of the invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0037] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0038] Example:

[0039] like Figures 1 to 5 As shown, this embodiment discloses a roughing and finishing boring tool that can be quickly converted, including a boring tool holder 10 and a boring tool head 11. The boring tool holder 10 can be installed on a boring machine. One end of the boring tool head 11 is rotatably disposed in the boring tool holder 10, and the other end is provided with a finishing boring tool 12 and a pair of roughing boring tools 13. The finishing boring tool 12 and the pair of roughing boring tools 13 are arranged circumferentially at 120° around the central axis of the boring tool head 11 and are detachably connected to the boring tool head 11. The central axis of the boring tool head 11 is eccentrically disposed with respect to the rotation center line of the boring machine.

[0040] The boring head 11 is provided with positioning cone holes 14 corresponding to the fine boring tool 12 and a pair of rough boring tools 13 respectively. The boring tool holder 10 is provided with a tool head fixing bolt 15. One end of the tool head fixing bolt 15 passes through the boring tool holder 10 and is threadedly connected to the boring tool holder 10. The end of the tool head fixing bolt 15 can be inserted into one of the positioning cone holes 14 on the boring head 11.

[0041] The boring bar holder 10 is provided with a positioning slot 16, which passes through one end of the boring bar holder 10. The positioning slot 16 is provided with a positioning steel ball 17, a return spring 18 and a locking screw plug 19. The positioning steel ball 17 is disposed in the positioning slot 16 and is slidably connected to the positioning slot 16. The locking screw plug 19 is disposed on the boring bar holder 10, with one end of the locking screw plug 19 extending into the positioning slot 16 and being threadedly connected to the positioning slot 16. One end of the return spring 18 contacts the positioning steel ball 17 and the other end contacts the locking screw plug 19. The positioning steel ball 17 can slide into one of the positioning cone holes 14 on the boring bar head 11.

[0042] In use, this invention allows for the loosening of the tool head fixing bolt 15, disengaging the end of the bolt from the positioning cone hole 14 on the boring head 11, and then rotating the boring head 11. During rotation, the boring head 11 compresses the positioning steel ball 17, causing it to disengage from the positioning cone hole 14, thus enabling the boring head 11 to rotate. During rotation, the boring head 11 completes one boring tool switch every 120° of rotation. After switching to the desired boring tool, the positioning steel ball 17 re-enters the positioning cone hole 14, and then the boring tool is fixed by tightening the tool head fixing bolt 15. This achieves rapid switching between the roughing boring tool 13 and the finishing boring tool 12. This solves the problem of reduced boring efficiency in commercial vehicle rear axle housings caused by the inability to quickly switch between the roughing boring tool 13 and the finishing boring tool 12 in current boring machines.

[0043] Before use, one of the rough boring tools 13 can be positioned at the highest point of the eccentric position as the initial position. During use, the fine boring tool 12 or the other rough boring tool 13 can be quickly switched by rotating the boring head 11120° clockwise or counterclockwise.

[0044] Generally speaking, rough boring usually involves two steps: first, you need to switch to the rough boring tool 13 to bore the hole, and then switch to the fine boring tool 12 to bore the hole.

[0045] To facilitate the installation of the boring head 11 and to make it easier to rotate or fix the boring head 11, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that the boring tool holder 10 is provided with a mounting slot 20, which passes through both ends of the boring tool holder 10. One end of the boring head 11 is set in the mounting slot 20 and is rotatably connected to the mounting slot 20. One end of the tool head fixing bolt 15 extends into the mounting slot 20, and the positioning slot 16 communicates with the mounting slot 20.

[0046] The mounting slot 20 facilitates the installation of the boring head 11, and also makes it easy to rotate or fix the boring head 11.

[0047] To reduce the impact of dust and debris on the boring accuracy, this embodiment is an improvement on the above embodiment. The difference is that the boring tool holder 10 is provided with a rear cover plate 21. The rear cover plate 21 is set on the boring tool holder 10 and is detachably connected to the boring tool holder 10 by fixing screws 22. The rear cover plate 21 is fitted with one end of the mounting slot 20 to close the mounting slot 20. The end of the boring tool head 11 located in the mounting slot 20 contacts the rear cover plate 21 and is rotatably connected to the rear cover plate 21.

[0048] The boring head 11 is provided with a pair of O-rings 23. The pair of O-rings 23 are embedded in the boring head 11 and are detachably connected to the boring head 11. The pair of O-rings 23 are respectively matched with the two ends of the mounting groove 20 and the pair of O-rings 23 are in contact with the inner sidewall of the mounting groove 20.

[0049] The pair of O-rings 23 can help reduce the entry of dust and debris into the mounting slot 20, thereby reducing the impact of dust and debris on the boring accuracy.

[0050] To facilitate the installation and subsequent replacement of the rough boring tool 13 and the fine boring tool 12, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that the other end of the boring tool head 11 is provided with a tool cover 24, and the tool cover 24 and the boring tool head 11 are detachably connected by three connecting bolts 25.

[0051] The boring head 11 and the tool cover 24 are provided with a first mounting port 26 that is configured to cooperate with the precision boring tool 12. The first mounting port 26 passes through the boring head 11. One end of the precision boring tool 12 is installed in the first mounting port 26 and is rotatably connected to the first mounting port 26. The first mounting port 26 is provided with a threaded connection part 27. The end of the precision boring tool 12 located in the first mounting port 26 is provided with a precision boring adjusting screw 28. One end of the precision boring adjusting screw 28 passes through the threaded connection part 27 and is threadedly connected to the end of the precision boring tool 12. The precision boring adjusting screw 28 is threadedly connected to the threaded connection part 27. The tool cover 24 is provided with a precision boring clamping bolt 29. One end of the precision boring clamping bolt 29 passes through the tool cover 24 and is threadedly connected to the tool cover 24. The end of the precision boring clamping bolt 29 is pressed against the precision boring tool 12.

[0052] A pair of second mounting openings 30 are provided between the boring head 11 and the tool cover 24 to cooperate with a pair of rough boring tools 13. One end of each pair of rough boring tools 13 is respectively set in the second mounting opening 30 and is slidably connected to the second mounting opening 30. The end of the rough boring tool 13 located in the second mounting opening 30 is provided with an inclined surface. A pair of locking adjustment members 31 are respectively provided on the tool cover 24 to cooperate with the pair of rough boring tools 13. The pair of locking adjustment members 31 are used to adjust and lock the pair of rough boring tools 13.

[0053] By providing a first mounting port 26, a second mounting port 30, and a removable tool cover 24, the installation and subsequent replacement of the roughing boring tool 13 and the finishing boring tool 12 can be facilitated. The finishing boring adjusting screw 28 and the threaded connection part 27 facilitate adjustment of the position of the finishing boring tool 12, and the finishing boring clamping bolt 29 is used to fix the finishing boring tool 12.

[0054] The locking adjustment component 31 includes a coarse boring clamping bolt 32 and a coarse boring adjusting screw 33. One end of the coarse boring clamping bolt 32 passes through the tool cover 24 and is threadedly connected to the tool cover 24. The end of the coarse boring clamping bolt 32 is pressed against the coarse boring tool 13. One end of the coarse boring adjusting screw 33 passes through the tool cover 24 and is threadedly connected to the tool cover 24. The end of the coarse boring adjusting screw 33 abuts against the inclined surface on the coarse boring tool 13.

[0055] The rough boring adjusting screw 33 allows for easy adjustment of the position of the rough boring tool 13. The rough boring clamping bolt 32 is used to fix the rough boring tool 13.

[0056] To facilitate simultaneous grinding of the end face of the rear axle housing of commercial vehicles and avoid the decrease in machining accuracy caused by repeated clamping of the housing, this embodiment is an improvement on the above embodiment. The difference lies in that the boring bar holder 10 is equipped with an end face boring bar 34, one end of which is inserted into and slidably connected to the boring bar holder 10. The end of the end face boring bar 34 inserted into the boring bar holder 10 has an inclined surface. The boring bar holder 10 is provided with a tool for fixing the end face boring bar 34. A pair of end face clamping bolts 35 are provided on the face boring tool 34. One end of the pair of end face clamping bolts 35 passes through the boring tool holder 10 and is threadedly connected to the boring tool holder 10. The ends of the pair of end face clamping bolts 35 are respectively pressed into the face boring tool 34. The boring tool holder 10 is provided with an end face adjusting screw 36 for adjusting the face boring tool 34. One end of the end face adjusting screw 36 passes through the boring tool holder 10 and is threadedly connected to the boring tool holder 10. The end of the end face adjusting screw 36 abuts against the inclined surface on the face boring tool 34.

[0057] A face boring tool 34 is installed on the boring bar holder 10, which allows for simultaneous grinding of the housing end face during rough boring and finish boring, reducing the number of times the housing needs to be re-clamped and thus avoiding the decrease in machining accuracy caused by repeated clamping. The face clamping bolt 35 is used to fix the face boring tool 34. The face adjusting screw 36 is used to adjust the position of the face boring tool 34.

[0058] To facilitate simultaneous chamfering of the end face of the rear axle housing of commercial vehicles and avoid the decrease in machining accuracy caused by repeated clamping of the housing, this embodiment is an improvement on the above embodiment. The difference lies in that the boring bar holder 10 is equipped with a chamfering tool 37. One end of the chamfering tool 37 is inserted into the boring bar holder 10 and slidably connected to it. The end of the chamfering tool 37 inserted into the boring bar holder 10 has an inclined surface. The boring bar holder 10 is provided with a fixing mechanism. A pair of chamfering clamping bolts 38 are provided on the chamfering cutter 37. One end of the pair of chamfering clamping bolts 38 passes through the boring tool holder 10 and is threadedly connected to the boring tool holder 10. The ends of the pair of chamfering clamping bolts 38 are respectively pressed into the chamfering cutter 37. The boring tool holder 10 is provided with chamfering adjusting screws 39 for adjusting the chamfering cutter 37. One end of the chamfering adjusting screw 39 passes through the boring tool holder 10 and is threadedly connected to the boring tool holder 10. The end of the chamfering adjusting screw 39 abuts against the inclined surface on the chamfering cutter 37.

[0059] A chamfering cutter 37 is installed on the boring bar holder 10, which allows for simultaneous chamfering of the housing during rough boring and finish boring, reducing the number of times the housing needs to be re-clamped and thus avoiding the decrease in machining accuracy caused by repeated clamping. The chamfering clamping bolt 38 is used to fix the chamfering cutter 37. The chamfering adjusting screw 39 is used to adjust the position of the chamfering cutter 37.

[0060] Working principle of this utility model:

[0061] In use, this invention allows for the loosening of the tool head fixing bolt 15, disengaging the end of the bolt from the positioning cone hole 14 on the boring head 11, and then rotating the boring head 11. During rotation, the boring head 11 compresses the positioning steel ball 17, causing it to disengage from the positioning cone hole 14, thus enabling the boring head 11 to rotate. Each 120° rotation of the boring head 11 completes one switching of the boring tool. After switching to the desired boring tool, the positioning steel ball 17 re-enters the positioning cone hole 14, and then the boring tool is fixed by tightening the tool head fixing bolt 15, achieving rapid switching between the roughing boring tool 13 and the fine boring tool 12. Meanwhile, by setting the end face boring tool 34 and the chamfering tool 37, the end face grinding and chamfering can be completed simultaneously during rough boring and fine boring. As a result, this utility model only needs to be clamped once to complete the rough boring and fine boring of the inner hole of the commercial vehicle rear axle housing, and at the same time complete the grinding and chamfering of the housing, which greatly reduces the impact of repeated clamping of the housing on the machining accuracy.

[0062] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0063] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rapid-change boring tool for roughing and finishing, characterized in that, It includes a boring post (10) and a boring head (11). The boring post (10) can be installed on a boring machine. One end of the boring head (11) is rotatably set inside the boring post (10), and the other end is provided with a fine boring tool (12) and a pair of rough boring tools (13). The fine boring tool (12) and the pair of rough boring tools (13) are arranged circumferentially on the boring head (11) at 120° around the central axis of the boring head (11) and are detachably connected to the boring head (11). The central axis of the boring head (11) is eccentrically set with respect to the rotation center line of the boring machine. The boring head (11) is provided with positioning cone holes (14) respectively corresponding to the fine boring tool (12) and a pair of rough boring tools (13). The boring tool holder (10) is provided with a tool head fixing bolt (15). One end of the tool head fixing bolt (15) passes through the boring tool holder (10) and is threadedly connected to the boring tool holder (10). The end of the tool head fixing bolt (15) can be inserted into one of the positioning cone holes (14) on the boring head (11). The boring tool holder (10) is provided with a positioning slot (16), which passes through one end of the boring tool holder (10). The positioning slot (16) is provided with a positioning steel ball (17), a return spring (18) and a locking screw plug (19). The positioning steel ball (17) is set in the positioning slot (16) and is slidably connected to the positioning slot (16). The locking screw plug (19) is set on the boring tool holder (10). One end of the locking screw plug (19) extends into the positioning slot (16) and is threadedly connected to the positioning slot (16). One end of the return spring (18) contacts the positioning steel ball (17) and the other end contacts the locking screw plug (19). The positioning steel ball (17) can slide into one of the positioning cone holes (14) on the boring tool head (11).

2. The roughing and finishing boring tool according to claim 1, characterized in that, The boring tool holder (10) is provided with a mounting slot (20), which extends through both ends of the boring tool holder (10). One end of the boring tool head (11) is set in the mounting slot (20) and is rotatably connected to the mounting slot (20). One end of the tool head fixing bolt (15) extends into the mounting slot (20), and the positioning slot (16) is connected to the mounting slot (20).

3. A roughing and finishing boring tool for quick conversion according to claim 2, characterized in that, The boring bar holder (10) is provided with a rear cover plate (21). The rear cover plate (21) is set on the boring bar holder (10) and is detachably connected to the boring bar holder (10) by fixing screws (22). The rear cover plate (21) is fitted with one end of the mounting slot (20) to close the mounting slot (20). The end of the boring bar head (11) located in the mounting slot (20) is in contact with the rear cover plate (21) and is rotatably connected to the rear cover plate (21).

4. A roughing and finishing boring tool for quick conversion according to claim 3, characterized in that, The boring head (11) is provided with a pair of O-rings (23). The pair of O-rings (23) are embedded in the boring head (11) and are detachably connected to the boring head (11). The pair of O-rings (23) are respectively matched with the two ends of the mounting groove (20) and the pair of O-rings (23) are in contact with the inner wall of the mounting groove (20).

5. A roughing and finishing boring tool according to claim 4, characterized in that, The other end of the boring head (11) is provided with a tool cover (24), which is detachably connected to the boring head (11) by three connecting bolts (25).

6. A roughing and finishing boring tool according to claim 5, characterized in that, A first mounting opening (26) is provided between the boring head (11) and the tool cover (24) to cooperate with the fine boring tool (12). The first mounting opening (26) passes through the boring head (11). One end of the fine boring tool (12) is installed in the first mounting opening (26) and is rotatably connected to the first mounting opening (26). A threaded connection part (27) is provided in the first mounting opening (26). The end of the fine boring tool (12) located in the first mounting opening (26) is provided with a fine boring adjustment. The screw (28) has one end passing through the threaded connection part (27) and threadedly connected to the end of the precision boring tool (12). The precision boring adjusting screw (28) is threadedly connected to the threaded connection part (27). The tool cover (24) is provided with a precision boring clamping bolt (29). One end of the precision boring clamping bolt (29) passes through the tool cover (24) and is threadedly connected to the tool cover (24). The end of the precision boring clamping bolt (29) is pressed against the precision boring tool (12).

7. A roughing and finishing boring tool according to claim 6, characterized in that, A pair of second mounting ports (30) are provided between the boring head (11) and the tool cover (24) to cooperate with a pair of rough boring tools (13). One end of the pair of rough boring tools (13) is respectively set in the second mounting port (30) and is slidably connected with the second mounting port (30). The end of the rough boring tool (13) located in the second mounting port (30) is provided with an inclined surface. A pair of locking adjustment members (31) are respectively provided on the tool cover (24) to cooperate with a pair of rough boring tools (13). The pair of locking adjustment members (31) are used to adjust and lock the pair of rough boring tools (13).

8. A roughing and finishing boring tool according to claim 7, characterized in that, The locking adjustment component (31) includes a coarse boring clamping bolt (32) and a coarse boring adjusting screw (33). One end of the coarse boring clamping bolt (32) passes through the tool cover (24) and is threadedly connected to the tool cover (24). The end of the coarse boring clamping bolt (32) is pressed against the coarse boring tool (13). One end of the coarse boring adjusting screw (33) passes through the tool cover (24) and is threadedly connected to the tool cover (24). The end of the coarse boring adjusting screw (33) abuts against the inclined surface on the coarse boring tool (13).

9. A roughing and finishing boring tool according to claim 8, characterized in that, A face boring bar (34) is provided on the boring bar holder (10). One end of the face boring bar (34) is inserted into the boring bar holder (10) and is slidably connected to the boring bar holder (10). The end of the face boring bar (34) inserted into the boring bar holder (10) has an inclined surface. A pair of face clamping bolts (35) for fixing the face boring bar (34) are provided on the boring bar holder (10). One end of the pair of face clamping bolts (35) passes through the boring bar holder (10). And is threadedly connected to the boring bar holder (10). The ends of a pair of end face clamping bolts (35) are respectively pressed into the end face boring bar (34). The boring bar holder (10) is provided with an end face adjusting screw (36) for adjusting the end face boring bar (34). One end of the end face adjusting screw (36) passes through the boring bar holder (10) and is threadedly connected to the boring bar holder (10). The end of the end face adjusting screw (36) abuts against the inclined surface on the end face boring bar (34).

10. A roughing and finishing boring tool for quick conversion according to claim 9, characterized in that, A chamfering tool (37) is provided on the boring tool holder (10). One end of the chamfering tool (37) is inserted into the boring tool holder (10) and is slidably connected to the boring tool holder (10). The end of the chamfering tool (37) inserted into the boring tool holder (10) has an inclined surface. A pair of chamfering clamping bolts (38) for fixing the chamfering tool (37) are provided on the boring tool holder (10). One end of the pair of chamfering clamping bolts (38) passes through the boring tool holder (10). And is threadedly connected to the boring bar holder (10), the ends of a pair of chamfering clamping bolts (38) are respectively pressed into the chamfering cutter (37), the boring bar holder (10) is provided with a chamfering adjusting screw (39) for adjusting the chamfering cutter (37), one end of the chamfering adjusting screw (39) passes through the boring bar holder (10) and is threadedly connected to the boring bar holder (10), and the end of the chamfering adjusting screw (39) abuts against the inclined surface on the chamfering cutter (37).

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