Groove milling cutter for drilling inclined holes

Abstract

The utility model discloses a slot milling cutter for drilling inclined holes, which comprises a cylindrical cutter handle and a spiral blade arranged at the bottom of the cylindrical cutter handle, a movable cutter handle is arranged at the top of the cylindrical cutter handle, a threaded column is fixedly arranged at the bottom of the movable cutter handle, and the bottom end of the threaded column penetrates through and extends into the cylindrical cutter handle. The inner wall of the cylindrical cutter handle is provided with internal threads and is in threaded connection with the threaded column, and through grooves are formed in the two sides of the cylindrical cutter handle. According to the utility model, the extension groove is connected with the chip removal groove of the spiral blade, so that the chip removal length is expanded, chips can be discharged more smoothly when an inclined hole is drilled, the accumulation of the chips in the cutter is reduced, the chip removal efficiency is improved, and meanwhile, the length of the cutter handle is adjustable and can be changed through simple operation to meet different processing requirements; in addition, the round micro protrusions on the inner walls of the extension grooves can disturb cuttings, adhesion or blockage of the cuttings is avoided, smooth chip removal is guaranteed, and the groove milling cutter can stably and efficiently complete inclined hole drilling operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to milling cutter technical field more specifically, relate to a groove milling cutter of drilling inclined hole. BACKGROUND

[0002] In the field of mechanical processing, drilling inclined hole is a common and certain degree of difficulty processing operation. The traditional groove milling cutter has many deficiencies when drilling inclined hole.

[0003] For example, the chip removal capacity is limited, since the particularity of inclined hole, the chip is not easy to discharge, is easy to accumulate in the cutter inside, influences the machining accuracy and tool life, simultaneously, the length of the shank is mostly fixed, is difficult to adapt to the demand of different machining depth and working condition, leads to the processing flexibility to be limited. In addition, in the drilling process, the chip is easy to stick or block in the chip removal groove, further influence the chip removal effect, therefore the person skilled in the art provides a groove milling cutter of drilling inclined hole to solve the above-mentioned problem. SUMMARY

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a groove milling cutter of drilling inclined hole.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A kind of groove milling cutter of drilling inclined hole, including cylindrical shank and the spiral cutting edge being installed at its bottom, the top of the cylindrical shank is provided with movable handle, the bottom of the movable handle is fixedly installed with threaded column, the bottom end of the threaded column penetrates and extends to the inside of cylindrical shank, internal thread is formed in the inner wall of the cylindrical shank and is connected with threaded column, the two sides of the cylindrical shank are all set with through slot, the bottom end of the threaded column is installed with limit block, the inside of the limit block is provided with limit shaft, the limit shaft both ends respectively penetrate two through slots and all extend to the outside of cylindrical shank, the outside of the cylindrical shank is set with the evenly distributed extension slot.

[0007] As a further description of the above technical scheme: the limit block is rotatably connected at the bottom of threaded column, annular array limit hole is formed in the outside of the limit block, the inside of the limit hole is communicated with the inside of limit block, the limit shaft is in the inside of limit hole.

[0008] As a further description of the above technical scheme: the outside of the movable handle is fixedly connected with synchronous ring, the synchronous ring is set with the evenly distributed slot edge.

[0009] As a further description of the above technical solution: the extension groove comprises a spiral part and a vertical part, the spiral part and the vertical part are both arranged on the outer side of the cylindrical tool shank, the bottom end of the spiral part is connected with the notch at the top of the helical blade, and the vertical part is located at the top of the spiral part and communicates with the inside of the spiral part.

[0010] As a further description of the above technical solution: the inner wall of the vertical part and the spiral part is connected with a micro protrusion, and the micro protrusion is circular in shape.

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] In the utility model, the extension groove is connected with the chip removal groove of the helical blade, the chip removal length is expanded, the chips can be smoothly discharged when drilling an inclined hole, the chip accumulation in the tool is reduced, the chip removal efficiency is improved, the length of the tool shank can be adjusted, the length of the tool shank can be changed through simple operation, different processing requirements are met, in addition, the circular micro protrusion on the inner wall of the extension groove can disturb the chips, the chips are prevented from being adhered or blocked, the chip removal is ensured to be smooth, the slot milling cutter can stably and efficiently complete the drilling inclined hole operation. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a schematic view of the three-dimensional structure of the utility model;

[0014] Figure 2 It is a schematic view of the three-dimensional structure of the utility model; Figure 1 It is an enlarged structure schematic view of A in the utility model;

[0015] Figure 3 It is a schematic view of the cross-sectional structure of the cylindrical tool shank of the utility model;

[0016] Figure 4 It is a schematic view of the top view cross-sectional structure of the limiting block of the utility model.

[0017] Mark number explanation in the drawing:

[0018] 1, cylindrical tool shank, 2, helical blade, 3, movable tool shank, 4, threaded column, 5, through groove, 6, limiting block, 7, limiting shaft, 8, extension groove, 801, spiral part, 802, vertical part, 9, limiting hole, 10, synchronous ring, 11, micro protrusion. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model;

[0020] Please refer to Figures 1 to 4The utility model discloses a kind of slot milling cutters of drilling inclined hole, including cylindrical shank 1 and spiral blade 2 installed in its bottom, the top of cylindrical shank 1 is provided with movable handle 3, movable handle 3 bottom is fixedly installed with threaded column 4, the bottom end of threaded column 4 is penetrated and extends to the inside of cylindrical shank 1, internal thread is set on the inner wall of cylindrical shank 1 and is connected with threaded column 4 by screw thread, both sides of cylindrical shank 1 are provided with through slot 5, the bottom end of threaded column 4 is installed with limit block 6, the inside of limit block 6 is provided with limit shaft 7, both ends of limit shaft 7 are penetrated two through slots 5 respectively and all extend to the outside of cylindrical shank 1, both ends of limit shaft 7 are all connected with lock nut by screw thread, the outside of cylindrical shank 1 is provided with evenly distributed extension groove 8;

[0021] Limit block 6 is rotatably connected at the bottom of threaded column 4, limit hole 9 of annular array is set on the outside of limit block 6, the inside of limit hole 9 is communicated with the inside of limit block 6, limit shaft 7 is in the inside of limit hole 9;

[0022] Extension groove 8 includes spiral part 801 and vertical part 802, spiral part 801 and vertical part 802 are all set on the outside of cylindrical shank 1, the bottom end of spiral part 801 is connected with the notch of the top of spiral blade 2, vertical part 802 is located at the top of spiral part 801 and is communicated with the inside of spiral part 801;

[0023] Miniature protrusion 11 is all connected on the inner wall of vertical part 802 and spiral part 801, and the shape of miniature protrusion 11 is circular.

[0024] When drilling inclined hole operation needs to use slot milling cutter of drilling inclined hole, user first installs tool on corresponding equipment;

[0025] In normal drilling process, spiral blade 2 is cut to workpiece, and the generated chip will enter the notch at the top of spiral blade 2, since the bottom end of spiral part 801 of extension groove 8 is connected with the notch at the top of spiral blade 2, chip will move upwards along spiral part 801, then enter vertical part 802 and finally discharge, extension groove 8 is connected with the chip removal groove of spiral blade 2, expands the length of chip removal, so that chip can be discharged more smoothly, reduce the accumulation of chip in tool, improve chip removal efficiency;

[0026] When the length of the tool shank needs to be adjusted, the user first unscrews the lock nuts at both ends of the limiting shaft 7, and then pulls out the limiting shaft 7 from the through slot 5 and the limiting hole 9, at this time, the limiting of the movable tool shank 3 by the limiting shaft 7 is released, and the user can rotate the movable tool shank 3, since the threaded column 4 at the bottom of the movable tool shank 3 is connected with the internal thread on the inner wall of the cylindrical tool shank 1, by rotating the movable tool shank 3, the threaded column 4 will move up and down under the action of the internal thread in the cylindrical tool shank 1, thereby realizing the change of the length of the tool shank, when the length of the tool shank is adjusted to the appropriate position, the limiting shaft 7 is inserted into the limiting hole 9 outside the limiting block 6 again, and extends to the outside of the cylindrical tool shank 1 through the two through slots 5 at both ends respectively, and finally the lock nuts are screwed on both ends of the limiting shaft 7 to fix the limiting shaft 7, thereby completing the adjustment of the length of the tool shank;

[0027] In the process of discharging the chips along the extension groove 8, the vertical part 802 and the circular micro protrusions 11 on the inner wall of the spiral part 801 can disturb the chips to a certain extent, avoiding the adhesion or blockage of the chips in the groove, further ensuring the smoothness of the chip removal, so that the slot milling cutter for drilling inclined holes can stably and efficiently complete the drilling work.

[0028] In the utility model, the extension groove 8 is connected with the chip removal groove of the spiral blade 2, the chip removal length is expanded, the chips can be discharged more smoothly when drilling inclined holes, the chip accumulation in the cutter is reduced, the chip removal efficiency is improved, meanwhile, the length of the tool shank can be adjusted, and the length of the tool shank can be changed through simple operation, different processing requirements are met, in addition, the circular micro protrusions 11 on the inner wall of the extension groove 8 can disturb the chips, avoiding the adhesion or blockage of the chips, ensuring the smoothness of the chip removal, so that the slot milling cutter can stably and efficiently complete the drilling inclined hole operation.

[0029] Please refer to Figure 1 and 3 Wherein: the outer side of the movable tool shank 3 is fixedly connected with a synchronous ring 10, and the synchronous ring 10 is provided with uniformly distributed slot edges.

[0030] In the utility model, when the user needs to adjust the length of the tool shank, the synchronous ring 10 with the slot edges can make the user more conveniently rotate, and it is convenient to use the tool.

[0031] The above describes only the preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the improvement concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A slotting cutter for drilling an inclined hole, comprising a cylindrical shank (1) and a helical cutting edge (2) mounted on the bottom of the shank, characterized in that: The top of the cylindrical tool handle (1) is provided with a movable tool handle (3), the bottom of the movable tool handle (3) is fixedly provided with a threaded column (4), the bottom end of the threaded column (4) penetrates and extends to the inside of the cylindrical tool handle (1), the inner wall of the cylindrical tool handle (1) is provided with an internal thread and is threadedly connected with the threaded column (4), both sides of the cylindrical tool handle (1) are provided with through grooves (5), the bottom end of the threaded column (4) is provided with a limiting block (6), the inside of the limiting block (6) is provided with a limiting shaft (7), both ends of the limiting shaft (7) penetrate through two through grooves (5) and extend to the outside of the cylindrical tool handle (1), both ends of the limiting shaft (7) are threadedly connected with lock nuts, the outside of the cylindrical tool handle (1) is provided with uniformly distributed extension grooves (8).

2. A slot mill for drilling an angled hole according to claim 1, characterized in that: The limiting block (6) is rotatably connected at the bottom of the threaded column (4), the outside of the limiting block (6) is provided with an annular array of limiting holes (9), the inside of the limiting hole (9) is in communication with the inside of the limiting block (6), and the limiting shaft (7) is located in the inside of the limiting hole (9).

3. A slot mill for drilling an angled hole according to claim 1, characterized in that: The outside of the movable tool handle (3) is fixedly connected with a synchronous ring (10), the synchronous ring (10) is provided with uniformly distributed groove edges.

4. A slotting cutter for drilling an inclined hole according to claim 1, characterized in that: The extension groove (8) comprises a spiral part (801) and a vertical part (802), the spiral part (801) and the vertical part (802) are both provided on the outside of the cylindrical tool handle (1), the bottom end of the spiral part (801) is connected with the notch at the top of the spiral blade (2), and the vertical part (802) is located at the top of the spiral part (801) and is in communication with the inside of the spiral part (801).

5. A slot mill for drilling an angled hole according to claim 4, characterized in that: The inner wall of the vertical part (802) and the spiral part (801) is connected with a micro protrusion (11), and the micro protrusion (11) is circular in shape.

Images