Stepless diameter adjusting boring cutter

Abstract

The utility model relates to a stepless diameter adjusting boring cutter which comprises a cutter handle, two cutter holders, a rotating rod and two moving blocks. The two tool aprons are both connected with the blade, are in central symmetry and can be connected to the lower portion of the tool handle in a horizontal moving mode relative to the tool handle. A horizontal channel used for containing the rotating rod is arranged between the two tool aprons and the tool handle. The two ends of the rotating rod are both sleeved with and in threaded connection with moving blocks, and the two moving blocks are correspondingly contained in the driving grooves in the tops of the two tool aprons. And the horizontal distances between the blades on the two tool aprons and the central shafts of the tool handles in the axial direction of the rotating rod are different. And when the rotating rod rotates around the horizontal axis of the rotating rod, the two moving blocks can drive the corresponding tool aprons to move towards each other or away from each other in the axial direction of the rotating rod. The device has the beneficial effects that the position of the tool apron can be adjusted only by rotating the rotating rod, operation is easy, precision is high, and the adjusting precision of the cutting diameter of the blade is improved. According to the stepless diameter adjusting boring cutter, the two blades are adopted for cutting at the same time, the single-time cutting amount is increased, and the cutting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of boring cutters, in particular to a stepless diameter-adjustable boring cutter. Background Art

[0002] When adjusting the diameter of the blade of a current boring tool, the tool holder for fixing the blade is generally disassembled, the tool holder is manually moved to the desired position to change the cutting diameter of the blade, and then the tool holder is fixed to the tool handle by bolting. This method is relatively cumbersome, has low adjustment efficiency, is difficult to control the accuracy of the moving position, and has low adjustment accuracy for the cutting diameter of the blade.

[0003] At the same time, current boring tools are generally single-edged, that is, only one blade is provided, so the single cutting amount is small and the cutting efficiency is low. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a stepless diameter-adjusting boring tool.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0008] The utility model provides a stepless diameter-adjustable boring tool, comprising: a tool handle, two tool seats, a rotating rod and two moving blocks;

[0009] The two knife seats are connected to blades, the two knife seats are centrally symmetrical, and can be connected to the lower part of the knife handle in a horizontal manner relative to the knife handle; a horizontal channel for accommodating the rotating rod is provided between the two knife seats and the knife handle; both ends of the rotating rod are sleeved and threadedly connected with the moving blocks, and the two moving blocks are correspondingly accommodated in the driving grooves at the tops of the two knife seats; the horizontal spacings of the central axes of the blades and the knife handle on the two knife seats in the axial direction of the rotating rod are different;

[0010] When the rotating rod rotates around the horizontal axis of the rotating rod, the two moving blocks can drive the corresponding tool holders to move toward or away from each other along the axial direction of the rotating rod.

[0011] According to the utility model, the moving block is an anti-rotation block, and the driving groove is an anti-rotation groove.

[0012] According to the utility model, an axial locking piece is fixedly connected to the knife handle, the axial locking piece is connected to the rotating rod, and the axial locking piece is used to limit the axial position of the rotating rod.

[0013] According to the utility model, an annular groove is provided on the outer periphery of the rotating rod;

[0014] A first threaded hole is provided above the axial locking member, a first screw is inserted into the first threaded hole and threadedly connected, and the first screw is threadedly connected to the knife handle;

[0015] A horizontal through hole is provided below the axial locking member, and the rotating rod is inserted into the horizontal through hole;

[0016] A horizontally oriented second threaded hole is provided below the axial locking member, and the second threaded hole and the horizontal through hole are vertically arranged; a second screw is inserted into and threadedly connected to the second threaded hole, and the second screw is inserted into the annular groove.

[0017] According to the utility model, the axial locking member and the knife seat are coaxially arranged;

[0018] The annular groove is arranged at the axial center of the rotating rod; the axial locking member is sleeved at the axial center of the rotating rod;

[0019] The horizontal spacings between the two moving blocks and the axial locking member in the axial direction of the rotating rod are different.

[0020] According to the utility model, the tool handle is coaxially provided with a stepped hole, the upper inner diameter of the stepped hole is larger than the lower inner diameter and the lower part of the stepped hole is provided with an internal thread;

[0021] A groove is coaxially formed at the bottom of the knife handle;

[0022] The upper part of the axial locking member is accommodated in the groove, and the first screw is threadedly connected to the internal thread of the stepped hole and the first threaded hole in sequence from top to bottom.

[0023] According to the utility model, both knife seats are provided with waist-shaped holes which are vertically oriented and extend along the moving direction of the knife seats, fasteners are inserted into the waist-shaped holes, and both knife seats are detachably connected to the knife handle via the fasteners.

[0024] According to the utility model, a vertically oriented positioning line is provided on the periphery of the knife handle;

[0025] Scale lines extending along the moving direction of the blade are arranged outside the two knife seats, and initial scale lines of the scale lines correspond to the positioning lines.

[0026] According to the utility model, one end or both ends of the rotating rod are provided with a rotating groove for insertion and rotation with the wrench.

[0027] According to the utility model, an accommodating cavity extending along the moving direction of the knife seats is provided on the upper part of the side where the two knife seats are in contact with each other;

[0028] The accommodating cavities of the two knife seats and the bottom of the knife handle form the horizontal channel.

[0029] (III) Beneficial effects

[0030] The beneficial effects of the utility model are as follows: the utility model provides a stepless diameter-adjustable boring tool, which, by rotating a rotating rod, rotates around a horizontal axis, and the rotating rod drives the corresponding tool holder to move toward or away from each other along the axial direction of the rotating rod through two moving blocks, so as to adjust the spacing between the axes of the blades and the tool handle connected to the two tool holders in the axial direction of the rotating rod, so as to change the cutting diameter of the blade rotation, and the cutting diameter of the blade can be adjusted arbitrarily, thereby realizing stepless diameter adjustment of the blade, and the adjustment range of the cutting diameter of the blade is relatively wide, which is suitable for cutting holes of different diameters.

[0031] Compared with the prior art method of manually adjusting the installation position of the tool holder by disassembling the tool holder, the present application only requires rotating the rotating rod to adjust the position of the tool holder. The operation is simple and the adjustment accuracy is high, thereby improving the adjustment accuracy of the blade cutting diameter.

[0032] At the same time, the stepless diameter-adjustable boring tool adopts two blades to cut simultaneously, which increases the single cutting amount and improves the cutting efficiency.

[0033] Furthermore, the horizontal spacing between the center axes of the blades and the handle on the two tool holders in the axial direction of the rotating rod is different, that is, the symmetrical center axes of the two tool holders and the center axis of the handle are not coaxial, and the two blades are arranged with staggered edges. Due to the staggered edges of the two blades, the cutting diameters of the two blades are different during the cutting process. The blade with a smaller cutting diameter and the blade with a larger cutting diameter work in sequence, which effectively increases the cutting depth, thereby improving the cutting efficiency, reducing the cutting force, improving the cutting stability, and extending the tool life. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a three-dimensional schematic diagram of the stepless diameter-adjustable boring cutter of the utility model;

[0035] Figure 2 for Figure 1 Schematic diagram of the decomposition of

[0036] Figure 3 for Figure 1 A top view of

[0037] Figure 4 for Figure 3 Sectional view at AA;

[0038] Figure 5 for Figure 1Side view of

[0039] Figure 6 A three-dimensional schematic diagram of a knife holder;

[0040] Figure 7 It is a top view assembly drawing of the axial locking member, the moving block, the rotating rod and the tool holder;

[0041] Figure 8 for Figure 7 Assembly drawing of the middle rotating rod, moving block and second screw;

[0042] Fig. 9 It is the assembly front view of the rotating rod, the moving block and the axial locking member;

[0043] Fig.10 for Fig. 9 A cross-sectional view of

[0044] Fig.11 It is the front view of the rotating lever.

[0045] [Description of Reference Numerals]

[0046] 1: handle; 11: stepped hole; 12: groove; 13: positioning line;

[0047] 2: knife seat; 21: driving slot; 22: waist-shaped hole; 23: fastener; 24: scale line; 25: accommodating cavity; 26: knife screw; 27: blade;

[0048] 3; rotating rod; 31: annular groove; 32: rotating groove;

[0049] 4: Move the block;

[0050] 5: horizontal channel;

[0051] 6: axial locking member; 61: first threaded hole; 62: horizontal through hole; 63: second threaded hole; 64: first screw; 65: second screw. DETAILED DESCRIPTION

[0052] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below in conjunction with the accompanying drawings through specific implementation methods. Figure 4 The orientation is used as a reference.

[0053] See also Figure 1-11 A stepless diameter-adjustable boring tool provided in an embodiment of the utility model comprises a tool handle 1, a tool seat 2, a rotating rod 3 and two moving blocks 4.

[0054] The top of the tool holder 1 is connected to the machine tool spindle, and the machine tool spindle drives the stepless diameter adjustment boring cutter to rotate as a whole through the tool holder 1 for cutting. Both tool seats 2 are connected to a blade 27. The two tool seats 2 are centrally symmetrical and can be connected to the bottom of the tool holder 1 so as to be horizontally movable relative to the tool holder 1. A horizontal channel 5 for accommodating the rotating rod 3 is provided between the two tool seats 2 and the tool holder 1. Both ends of the rotating rod 3 are sleeved and threaded with moving blocks 4, and the two moving blocks 4 are correspondingly accommodated in the driving grooves 21 at the tops of the two tool seats 2. When the rotating rod 3 rotates around the horizontal axis of the rotating rod 3, the two moving blocks 4 can drive the corresponding tool seats 2 to move toward or away from each other along the axial direction of the rotating rod 3. It should be noted that when the rotating rod 3 rotates around the axis of the rotating rod 3 in a first direction, the two moving blocks 4 can drive the corresponding tool seats 2 to move toward each other along the axial direction of the rotating rod 3; when the rotating rod 3 rotates around the axis of the rotating rod 3 in the opposite direction of the first direction, the two moving blocks 4 can drive the corresponding tool seats 2 to move away from each other along the axial direction of the rotating rod 3.

[0055] By rotating the rotating rod 3, the rotating rod 3 rotates around the horizontal axis, and the rotating rod 3 drives the corresponding tool holder 2 to move toward or away from each other along the axial direction of the rotating rod 3 through the two moving blocks 4, so as to adjust the distance between the axes of the blades 27 connected to the two tool holders 2 and the tool handle 1 in the axial direction of the rotating rod 3, so as to change the cutting diameter of the rotating blade 27. The cutting diameter of the blade 27 can be adjusted arbitrarily, realizing the stepless diameter adjustment of the blade 27, and the adjustment range of the cutting diameter of the blade 27 is wide, which is suitable for cutting holes of different diameters.

[0056] Compared with the method of manually adjusting the installation position of the tool holder 2 by disassembling the tool holder 2 in the prior art, the present application only needs to rotate the rotating rod 3 to adjust the position of the tool holder 2. The operation is simple and the adjustment accuracy is high, thereby improving the adjustment accuracy of the cutting diameter of the blade 27.

[0057] At the same time, the stepless diameter-adjustable boring tool adopts two blades 27 to cut simultaneously, thereby increasing the single cutting amount and improving the cutting efficiency.

[0058] Furthermore, the horizontal spacing between the blades 27 on the two tool seats 2 and the central axis of the tool handle 1 in the axial direction of the rotating rod 3 is different, that is, the symmetrical central axis of the two tool seats 2 and the central axis of the tool handle 1 are not coaxial, and the two blades 27 are arranged with staggered edges. Since the two blades 27 have staggered edges, the cutting diameters of the two blades 27 during the cutting process are different. The blade 27 with a smaller cutting diameter and the blade 27 with a larger cutting diameter work in sequence, which effectively increases the cutting depth, thereby improving the cutting efficiency, and can also reduce the cutting force, improve the cutting stability, and extend the tool life.

[0059] Furthermore, the moving block 4 is an anti-rotation block, and the driving groove 21 is an anti-rotation groove. When the moving block 4 is placed in the driving groove 21, the moving block 4 cannot rotate. Preferably, the moving block 4 is a rectangular block, and the driving groove 21 is a rectangular groove; or, the moving block 4 is an ellipsoid, and the driving groove 21 is an ellipsoid groove; or, the moving block 4 is a prism, and the driving groove 21 is a prism groove; or, the moving block 4 is a special-shaped body with edges, and the driving groove 21 is a special-shaped groove with edges. Of course, there are other steps for the moving block 4 and the driving groove 21, which can limit the moving block 4 from rotating around the axial direction of the rotating rod 3.

[0060] Furthermore, external threads are provided at both ends of the rotating rod 3 , and the two ends of the rotating rod 3 are sleeved and threadedly connected to the moving block 4 .

[0061] Specifically, an annular groove 31 is further provided on the outer circumference of the rotating rod 3 .

[0062] Furthermore, the axial locking member 6 is fixedly connected to the handle 1, and the axial locking member 6 is connected to the rotating rod 3, and is used to limit the axial position of the rotating rod 3. The axial locking member 6 is used to limit the rotating rod 3 from moving along the axial direction of the rotating rod 3, so that the two moving blocks 4 can be driven to move along the axial direction of the rotating rod 3 when the rotating rod 3 rotates around the horizontal axis.

[0063] Specifically, a first threaded hole 61 is provided above the axial locking member 6, a first screw 64 is inserted into and threadedly connected to the first threaded hole 61, and the first screw 64 is threadedly connected to the shank 1 to fix the axial locking member 6 to the shank 1. A horizontal through hole 62 is provided below the axial locking member 6, and the rotating rod 3 is inserted into the horizontal through hole 62. A horizontally oriented second threaded hole 63 is provided below the axial locking member 6, and the second threaded hole 63 and the horizontal through hole 62 are arranged vertically. A second screw 65 is inserted into and threadedly connected to the second threaded hole 63, and the second screw 65 is inserted into the annular groove 31, and the second screw 65 restricts the rotating rod 3 from moving along the axial direction of the rotating rod 3.

[0064] Specifically, the axial locking member 6 is coaxially arranged with the tool holder 2. An annular groove 31 is arranged at the axial center of the rotating rod 3. The axial locking member 6 is sleeved at the axial center of the rotating rod 3. After installation, the tool holder 2 and the axial locking member 6 are coaxially arranged, and the axial direction of the axial locking member 6 corresponds to the axial center of the rotating rod 3, so that when the rotating rod 3 is rotated, the displacement of the corresponding tool holder 2 driven by the two moving blocks 4 is controlled to be consistent, thereby improving the adjustment accuracy.

[0065] More specifically, a coaxial first threaded hole 61 is defined at the top of the axial locking member 6 .

[0066] Preferably, the horizontal spacings of the two moving blocks 4 and the axial locking member 6 in the axial direction of the rotating rod 3 are different. Therefore, the horizontal spacings of the two driving grooves 21 accommodating the moving blocks 4 and the axial locking member 6 in the axial direction of the rotating rod 3 are also different, and the horizontal spacings of the blades 27 and the axial locking member 6 arranged on the two tool seats 2 in the axial direction of the rotating rod 3 are also different, that is, the horizontal spacings of the blades 27 on the two tool seats 2 and the axial direction of the tool handle 1 in the axial direction of the rotating rod 3 are different, so that the two blades 27 of the boring tool are arranged with staggered edges.

[0067] More specifically, the handle 1 is coaxially provided with a stepped hole 11, the upper inner diameter of the stepped hole 11 is larger than the lower inner diameter and the lower part of the stepped hole 11 is provided with an internal thread. The bottom of the handle 1 is coaxially provided with a groove 12. The groove 12 accommodates the upper part of the axial locking member 6, and the first screw 64 is threadedly connected to the internal thread of the stepped hole 11 and the first threaded hole 61 from top to bottom in sequence, so as to facilitate the installation of the axial locking member 6 on the handle 1 and keep the axial locking member 6 and the handle 1 coaxial.

[0068] Further, one end or both ends of the rotating rod 3 are provided with a rotating groove 32 for insertion and rotation with the wrench. When in use, the wrench is inserted into the rotating groove 32 of the rotating rod 3 and transmits torque to the rotating rod 3.

[0069] Preferably, the rotation groove 32 is a hexagonal hole, and the wrench is a hexagonal wrench.

[0070] Furthermore, both knife seats 2 are provided with waist-shaped holes 22 which are vertically oriented and extend along the moving direction of the knife seats 2, and fasteners 23 are inserted into the waist-shaped holes 22. Both knife seats 2 are detachably connected to the knife handle 1 through the fasteners 23.

[0071] When in use, first loosen the fastener 23, then rotate the rotating rod 3, and when the rotating rod 3 drives the corresponding tool holder 2 to move toward or away from the axial direction of the rotating rod 3 through the two moving blocks 4, the waist-shaped hole 22 moves relative to the fastener 23. After the tool diameter is adjusted, the fastener 23 is locked to lock the tool holder 2 on the tool handle 1.

[0072] Preferably, the fastener 23 is a screw.

[0073] Specifically, an accommodating cavity 25 extending along the moving direction of the knife seats 2 is provided at the upper part of the side where the two knife seats 2 are in contact with each other. The accommodating cavities 25 of the two knife seats 2 and the bottom of the knife handle 1 form a horizontal channel 5.

[0074] Specifically, a vertically oriented positioning line 13 is provided on the periphery of the tool handle 1. Scale lines 24 extending along the moving direction of the blade 27 are provided outside the two tool seats 2, and the initial scale lines 24 of the scale lines 24 correspond to the positioning line 13. The initial scale lines 24 on the scale lines 24 indicate the initial cutting diameter of the blade 27.

[0075] When the rotating rod 3 is rotated and the two tool seats 2 are driven to move toward or away from each other along the axial direction of the rotating rod 3, the cutting diameter of the blade 27 after the cutting diameter is adjusted is obtained from the scale line 24 on the tool seat 2 and the positioning line 13 on the tool handle 1, so that the cutting diameter of the adjusted blade 27 can be obtained intuitively and quickly.

[0076] Existing boring tools generally determine the cutting diameter of their blades 27 by trial cutting and measuring operations, that is, firstly, the processed hole is trial cut and bored, then the processed hole diameter is measured, and then the installation position of the tool holder 2 is readjusted. This adjustment method relies on the subjective judgment of the operator, and there are problems such as repeated disassembly and assembly, low adjustment efficiency, and low precision. The stepless diameter adjustment boring tool can adjust the cutting diameter of the blade 27 only by rotating the rotating rod 3, with high adjustment efficiency, and the cutting diameter of the blade 27 can be directly read through the scale line 24 on the tool holder 2 and the positioning line 13 on the tool handle 1, thereby improving the adjustment precision of the blade 27.

[0077] Further, the cutter seat 2 is connected with a cutter blade 27 via a cutter connecting screw 26. The cutter blade 27 is located at one end of the cutter seat 2 in the length direction, and two cutters 27 are located at both ends of the stepless diameter adjustment boring tool.

[0078] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0079] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A stepless diameter-adjustable boring tool, characterized in that: include: A knife handle (1), two knife seats (2), a rotating rod (3) and two moving blocks (4); The two knife seats (2) are both connected to a blade (27); the two knife seats (2) are centrally symmetrical and are connected to the lower side of the knife handle (1) so as to be horizontally movable relative to the knife handle (1); a horizontal channel (5) for accommodating the rotating rod (3) is provided between the two knife seats (2) and the knife handle (1); both ends of the rotating rod (3) are sleeved with and threadedly connected to the moving blocks (4), and the two moving blocks (4) are correspondingly accommodated in the driving grooves (21) at the tops of the two knife seats (2); the central axes of the blades (27) and the knife handle (1) on the two knife seats (2) are at different horizontal distances in the axial direction of the rotating rod (3); When the rotating rod (3) rotates around the horizontal axis of the rotating rod (3), the two moving blocks (4) can drive the corresponding knife seats (2) to move towards or away from each other along the axial direction of the rotating rod (3).

2. The stepless diameter-adjustable boring tool according to claim 1, characterized in that: The moving block (4) is an anti-rotation block, and the driving groove (21) is an anti-rotation groove.

3. The stepless diameter-adjustable boring tool according to claim 1, characterized in that: An axial locking piece (6) is fixedly connected to the knife handle (1), the axial locking piece (6) is connected to the rotating rod (3), and the axial locking piece (6) is used to limit the axial position of the rotating rod (3).

4. The stepless diameter-adjustable boring tool according to claim 3, characterized in that: An annular groove (31) is provided on the outer periphery of the rotating rod (3); A first threaded hole (61) is provided above the axial locking member (6), a first screw (64) is inserted into the first threaded hole (61) and threadedly connected thereto, and the first screw (64) is threadedly connected to the knife handle (1); A horizontal through hole (62) is provided below the axial locking member (6), and the rotating rod (3) is inserted into the horizontal through hole (62); A second threaded hole (63) oriented horizontally is provided below the axial locking member (6), and the second threaded hole (63) and the horizontal through hole (62) are arranged vertically; a second screw (65) is inserted into and threadedly connected to the second threaded hole (63), and the second screw (65) is inserted into the annular groove (31).

5. The stepless diameter-adjustable boring tool according to claim 4, characterized in that: The axial locking member (6) and the knife seat (2) are coaxially arranged; The annular groove (31) is arranged at the axial center of the rotating rod (3); the axial locking member (6) is sleeved at the axial center of the rotating rod (3); The horizontal spacings between the two moving blocks (4) and the axial locking member (6) in the axial direction of the rotating rod (3) are different.

6. The stepless diameter-adjustable boring tool according to claim 4, characterized in that: The tool handle (1) is coaxially provided with a stepped hole (11), the inner diameter of the upper portion of the stepped hole (11) is greater than the inner diameter of the lower portion, and the lower portion of the stepped hole (11) is provided with an internal thread; The bottom of the knife handle (1) is coaxially provided with a groove (12); The groove (12) accommodates the upper part of the axial locking member (6), and the first screw (64) is threadedly connected to the internal thread of the stepped hole (11) and the first threaded hole (61) in sequence from top to bottom.

7. The stepless diameter-adjustable boring tool according to claim 1, characterized in that: Both knife seats (2) are provided with waist-shaped holes (22) which are oriented vertically and extend along the moving direction of the knife seats (2), and fasteners (23) are inserted into the waist-shaped holes (22). Both knife seats (2) are detachably connected to the knife handle (1) via the fasteners (23).

8. The stepless diameter-adjustable boring tool according to claim 1, characterized in that: A vertically oriented positioning line (13) is provided on the outer periphery of the knife handle (1); Scale lines (24) extending along the moving direction of the blade (27) are arranged outside the two blade seats (2), and initial scale lines (24) of the scale lines (24) correspond to the positioning lines (13).

9. The stepless diameter-adjustable boring tool according to claim 1, characterized in that: One end or both ends of the rotating rod (3) are provided with a rotating groove (32) for insertion and rotating with the wrench.

10. The stepless diameter-adjustable boring tool according to claim 1, characterized in that: An accommodating cavity (25) extending along the moving direction of the knife seats (2) is provided on the upper part of one side where the two knife seats (2) are in contact with each other; The accommodating cavities (25) of the two knife seats (2) and the bottom of the knife handle (1) form the horizontal channel (5).

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