Combined fine boring cutter

Abstract

The utility model discloses a combined fine boring cutter which comprises a cutter bar, the upper portion of the cutter bar is sequentially provided with a stepped hole small hole cutter head installation section, a connecting section and a stepped hole large hole cutter head installation section from top to bottom, and the diameter of the stepped hole small hole cutter head installation section is smaller than that of the stepped hole large hole cutter head installation section. Mounting holes are respectively formed in the stepped hole small hole tool bit mounting section and the stepped hole large hole tool bit mounting section, adjustable tool bits are respectively and correspondingly mounted in the mounting holes, and the adjustable tool bits are used for adjusting the boring diameter of the stepped hole. According to the utility model, the stepped holes can be precisely bored, the coaxiality can be ensured while the machining efficiency is improved, the diameters of the two stepped holes can be independently and radially adjusted according to the machining size and tolerance requirements, the adjustment precision is 0.01 mm, the adjustment range is wider, and the boring device can be suitable for precisely boring the stepped holes with various hole diameters.

Description

Technical Field

[0001] The utility model relates to the technical field of precision boring tools, in particular to a combined precision boring tool. Background Art

[0002] When the existing precision boring tool is used to perform precision boring on the stepped hole, two boring tools are required to be used for processing in batches, which takes a long time and has low efficiency; more importantly, the coaxiality of the stepped hole after processing cannot be guaranteed.

[0003] Of course, there are also combination tools for precision boring of stepped holes, but the diameter of the stepped holes targeted by such tools is fixed and cannot be adjusted. They cannot be adapted to a variety of hole diameters and have a small scope of application. Utility Model Content

[0004] In order to solve the above technical problems, the utility model designs a combined fine boring tool.

[0005] The utility model adopts the following technical solutions:

[0006] A combined fine boring tool comprises a tool bar, wherein a stepped hole small hole cutter head mounting section, a connecting section and a stepped hole large hole cutter head mounting section are sequentially arranged on the upper part of the tool bar from top to bottom, the stepped hole small hole cutter head mounting section has a smaller diameter than the stepped hole large hole cutter head mounting section, the stepped hole small hole cutter head mounting section and the stepped hole large hole cutter head mounting section are respectively provided with mounting holes, and adjustable cutter heads are respectively correspondingly mounted in the mounting holes, and the adjustable cutter heads are used to adjust the stepped hole boring diameter size.

[0007] Preferably, the adjustable cutter head includes an adjusting knob, an adjusting screw, an adjusting nut, a guide sleeve, a blade seat and a blade. The adjusting knob is fixedly connected to the adjusting screw, and the adjusting knob is rotatably connected to one end of the mounting hole. The adjusting screw is threadedly connected to an adjusting nut, and the adjusting nut is fixedly connected to a guide sleeve outside the adjusting nut. The guide sleeve moves in a straight line along the mounting hole, and the rear end of the guide sleeve is fixedly connected to the blade seat, on which a blade is mounted.

[0008] Preferably, a locking nut is threadedly fastened to the inner side of the adjusting screw, and the adjusting knob is rotatably connected to one end of the mounting hole through the snap-fitting of the locking nut.

[0009] Preferably, the blade seat is provided with a blade seating groove, in which a blade is fixedly connected by bolts.

[0010] Preferably, a blade removal opening is provided on one side of the blade seating groove on the blade seat.

[0011] Preferably, a bolt hole is provided at the rear end of the guide sleeve, and the blade seat is fixedly connected to the rear end of the guide sleeve via a hexagon socket bolt and the bolt hole.

[0012] Preferably, a connector is provided at one end of the knife rod.

[0013] Preferably, the connecting section is in the shape of a truncated cone that is smaller at the top and larger at the bottom.

[0014] Preferably, a dial is fixedly mounted on the adjusting knob.

[0015] The beneficial effect of the utility model is that the utility model designs a combined precision boring tool, which can realize the precision boring of stepped holes, ensure the coaxiality while improving the processing efficiency, and the diameters of the two stepped holes can be independently adjusted radially according to the processing size and tolerance requirements, with an adjustment accuracy of 0.01 mm and a wide adjustment range, which can be suitable for the precision boring of stepped holes with various apertures. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a front view of the utility model;

[0018] Figure 3 It is a right side view of the utility model;

[0019] Figure 4 It is a rear view of the utility model;

[0020] Figure 5 yes Figure 2 A cross-sectional view in the AA direction;

[0021] Figure 6 yes Figure 5 An enlarged view of position I in the middle;

[0022] In the figure: 1. tool rod, 2. adjustable tool head, 3. connecting head, 4. stepped hole large hole tool head mounting section, 5. stepped hole small hole tool head mounting section, 6. connecting section, 7. adjusting knob, 8. locking nut, 9. adjusting screw, 10. adjusting nut, 11. guide sleeve, 12. blade seat, 13. blade, 14. removal port, 15. hexagon socket bolt, 16. mounting hole. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0024] Example: Figure 1-Figure 6As shown, a combined fine boring tool comprises a tool bar 1, on the upper part of which a stepped hole small hole cutter head mounting section 5, a connecting section 6 and a stepped hole large hole cutter head mounting section 4 are sequentially arranged from top to bottom. The stepped hole small hole cutter head mounting section has a smaller diameter than the stepped hole large hole cutter head mounting section. The stepped hole small hole cutter head mounting section and the stepped hole large hole cutter head mounting section are respectively provided with mounting holes 16, in which adjustable cutter heads 2 are respectively installed, and the adjustable cutter heads are used to adjust the diameter size of the stepped hole boring hole.

[0025] The adjustable cutter head includes an adjusting knob 7, an adjusting screw 9, an adjusting nut 10, a guide sleeve 11, a blade seat 12 and a blade 13. The adjusting knob is fixedly connected to the adjusting screw, and the adjusting knob is rotatably connected to one end of the mounting hole. The adjusting screw is threadedly connected to an adjusting nut, and the adjusting nut is fixedly connected to a guide sleeve outside the adjusting nut. The guide sleeve moves in a straight line along the mounting hole. The tail end of the guide sleeve is fixedly connected to the blade seat, and a blade is installed on the blade seat.

[0026] The inner side of the adjusting screw is fastened with a locking nut 8 through a thread, and the adjusting knob is rotatably connected to one end of the mounting hole through the snap-fitting of the locking nut.

[0027] The blade holder is provided with a blade placement groove, in which a blade is fixedly connected by bolts. A blade taking opening 14 is provided on one side of the blade placement groove on the blade holder.

[0028] A bolt hole is provided at the rear end of the guide sleeve, and the blade seat is fixedly connected to the rear end of the guide sleeve through the hexagon socket bolt 15 and the bolt hole.

[0029] A connector 3 is provided at one end of the knife rod. The connecting section is in the shape of a truncated cone with a small top and a large bottom. A dial is fixedly mounted on the adjusting knob.

[0030] When the combined precision boring tool is in use, the adjusting knobs are rotated according to the dials of the upper and lower adjustable cutter heads according to the boring diameter of the stepped hole to be processed, and the adjusting knob drives the adjusting screw to rotate. The adjusting screw rotates to drive the guide sleeve to adjust along the straight line of the mounting hole, and the position of the blade seat is adjusted, thereby adjusting the boring position of the blade to adapt to the stepped hole to be processed, so as to achieve precision boring of the stepped hole, improve the processing efficiency and ensure the coaxiality, and the diameters of the two stepped holes can be independently adjusted radially according to the processing size and tolerance requirements, with an adjustment accuracy of 0.01 mm and a wide adjustment range, and can be suitable for precision boring of stepped holes of various apertures.

[0031] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. A combined fine boring tool, comprising a tool bar (1), characterized in that: The upper part of the tool rod (1) is provided with a stepped hole small hole cutter head mounting section (5), a connecting section (6) and a stepped hole large hole cutter head mounting section (4) in order from top to bottom. The stepped hole small hole cutter head mounting section (5) has a smaller diameter than the stepped hole large hole cutter head mounting section (4). The stepped hole small hole cutter head mounting section (5) and the stepped hole large hole cutter head mounting section (4) are respectively provided with mounting holes (16). Adjustable cutter heads (2) are respectively installed in the mounting holes (16). The adjustable cutter heads (2) are used to adjust the diameter size of the stepped hole boring hole.

2. The combined fine boring tool according to claim 1 is characterized in that: The adjustable cutter head (2) comprises an adjusting knob (7), an adjusting screw (9), an adjusting nut (10), a guide sleeve (11), a blade seat (12) and a blade (13); the adjusting knob (7) is fixedly connected to the adjusting screw (9); the adjusting knob (7) is rotatably connected to one end of a mounting hole (16); the adjusting screw (9) is threadedly connected to the adjusting nut (10); the adjusting nut (10) is fixedly connected to the outside of the adjusting nut (10); the guide sleeve (11) moves linearly along the mounting hole (16); the rear end of the guide sleeve (11) is fixedly connected to the blade seat (12); and the blade seat (12) is mounted with the blade (13).

3. The combined fine boring tool according to claim 2, characterized in that: The inner side of the adjusting screw rod (9) is fastened with a locking nut (8) through a thread, and the adjusting knob (7) is rotatably connected to one end of the mounting hole (16) through the snap-fitting of the locking nut (8).

4. The combined fine boring tool according to claim 2 is characterized in that: The blade seat (12) is provided with a blade placement groove, and a blade (13) is fixedly connected to the blade placement groove via bolts.

5. The combined fine boring tool according to claim 4 is characterized in that: A blade removal opening (14) is provided on one side of the blade placement groove on the blade seat (12).

6. The combined fine boring tool according to claim 2 is characterized in that: A bolt hole is provided at the rear end of the guide sleeve (11), and the blade seat (12) is fixedly connected to the rear end of the guide sleeve (11) via a hexagon socket bolt (15) and the bolt hole.

7. The combined fine boring tool according to claim 1 is characterized in that: A connecting head (3) is provided at one end of the knife rod (1).

8. The combined fine boring tool according to claim 1, characterized in that: The connecting section (6) is in the shape of a truncated cone that is smaller at the top and larger at the bottom.

9. The combined fine boring tool according to claim 2, characterized in that: A dial is fixedly mounted on the adjusting knob (7).

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