Taper thread milling cutter with inner cooling structure

Abstract

The utility model belongs to the technical field of milling cutters, particularly relates to a taper thread milling cutter with an inner cooling structure, and aims to solve the problem that the service life of the taper thread milling cutter is shortened due to high-temperature ablation caused by high-speed rotation of the conventional taper thread milling cutter during working. One end of the milling cutter fixing handle is connected with a milling cutter body, and a cooling mechanism for cooling the milling cutter is arranged on the outer surface of the milling cutter fixing handle. Cooling water is discharged to the outside through the discharging hole in the milling cutter body, the milling cutter body is located in the cutting hole of the workpiece, so that the sprayed cooling water can flow out from the hole of the workpiece, when the cooling water passes through the chip discharging groove, waste chips can be flushed out, the cooling water can cool the milling cutter body, and the service life of the milling cutter body is prolonged. The condition that the temperature of the milling cutter body is too high is effectively reduced, and the service life of the milling cutter is prolonged.

Description

Technical Field

[0001] The utility model relates to a tapered thread milling cutter, in particular to a tapered thread milling cutter with an internal cooling structure, belonging to the technical field of milling cutters. Background Art

[0002] Taper thread milling cutters are cutting tools specifically designed for producing tapered threads. Their structural design and performance characteristics make them widely applicable in the thread processing industry. They are primarily used to produce threads with a taper, meaning the thread diameter gradually changes along the axial direction. These cutters are widely used in the machining of shafts and various housing components within the machinery industry, particularly where high-precision and complex thread shapes are required.

[0003] In the prior art, a tapered milling cutter for aluminum disclosed in announcement number CN217964954U includes a cutter head body, one side of the cutter head body is fixedly connected to a handle body, an adjustment sleeve is provided on the outside of the handle body, a connecting sleeve is provided on the outside of the adjustment sleeve, a threaded sleeve is fixedly connected to one side of the connecting sleeve, a mounting sleeve is fixedly connected to the outside of the threaded sleeve, a limiting rod is provided inside the adjusting sleeve, and the top of the limiting rod is fixedly connected to a limiting plate. The limiting rod is removed from the mounting groove, the limiting plate is pulled upward, the positioning block at the bottom of the limiting plate is moved out of the positioning slot, and then the limiting rod is removed from the mounting groove. At this time, the adjusting sleeve can be moved. After the adjusting sleeve is moved to a suitable length outside the cutter head body, the limiting rod is inserted into the mounting groove to fix it. This structure realizes the function of facilitating the adjustment of the installation length of the milling cutter.

[0004] Although the above technical solution facilitates the adjustment of the milling cutter installation length by removing the limit rod from the installation groove and pulling the limit plate upward, the tapered thread milling cutter needs to rotate at high speed during operation, which will cause high-temperature ablation and reduce the service life of the tapered thread milling cutter. In view of this, a tapered thread milling cutter with an internal cooling structure is provided to overcome the above defects. Utility Model Content

[0005] The utility model provides a tapered thread milling cutter with an internal cooling structure to solve the problem that the tapered thread milling cutter needs to rotate at high speed during operation, which will cause high-temperature ablation and reduce the service life of the tapered thread milling cutter.

[0006] The utility model achieves the above-mentioned object through the following technical solutions: a tapered thread milling cutter with an internal cooling structure, comprising a milling cutter fixing handle, one end of the milling cutter fixing handle is connected to a milling cutter body, an outer surface of the milling cutter fixing handle is provided with a cooling mechanism for cooling the milling cutter, and a disassembly mechanism for disassembling the milling cutter is fixed to the end of the milling cutter fixing handle;

[0007] The cooling mechanism includes a protective shell, which is sleeved on the outer surface of the milling cutter fixing handle. The outer wall of the protective shell is provided with a water inlet, the outer wall of the milling cutter fixing handle is provided with a through hole interconnected with the protective shell, the interior of the milling cutter fixing handle is provided with a flow cavity interconnected with the through hole, and the end of the milling cutter body is provided with a discharge hole interconnected with the flow cavity.

[0008] As a further solution of the present invention: the disassembly mechanism includes a connecting rod, and the connecting rod is fixed to the end of the milling cutter fixed handle.

[0009] As a further solution of the present invention: two fixing bars are fixed to the outer surface of the connecting rod, and the outer surfaces of the two fixing bars are plug-connected with fixing grooves provided on the inner wall of the milling cutter body.

[0010] As a further solution of the present invention: two fixing holes are provided on the outer wall of the connecting rod.

[0011] As a further solution of the present invention: fixing screws threadedly connected to the milling cutter body are plugged into the interior of the two fixing holes.

[0012] As a further solution of the present invention, four chip removal grooves are provided on the outer surface of the milling cutter body.

[0013] As a further solution of the present invention: the inner wall of the protective shell is inlaid with a fixed bearing, and the interior of the fixed bearing is provided with a fixed ring fixedly connected to the fixed handle of the milling cutter.

[0014] The beneficial effects of the utility model are as follows: cooling water is discharged to the outside through the discharge hole on the milling cutter body. Since the milling cutter body is in the cutting hole of the workpiece, the sprayed cooling water will flow out from the hole of the workpiece, and when the cooling water passes through the chip discharge groove, the waste chips can be flushed out. In addition, the cooling water can cool the milling cutter body, effectively reducing the situation where the milling cutter body is overheated, and prolonging the service life of the milling cutter.

[0015] Unscrew the fixing screw on the milling cutter body to separate the fixing screw and the fixing hole on the connecting rod. With the cooperation of the fixing bar and the fixing groove, the milling cutter body and the milling cutter fixing handle can be disassembled, and the milling cutter body can be replaced separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the protective shell of the utility model;

[0018] Figure 3This is a schematic diagram of the cross-sectional structure of the milling cutter body of the utility model;

[0019] Figure 4 For this utility model Figure 2 Enlarged view of point A in the middle.

[0020] In the figure: 1. Milling cutter fixing handle; 2. Milling cutter body; 3. Protective shell; 31. Water inlet; 32. Through hole; 33. Flow cavity; 34. Discharge hole; 4. Connecting rod; 41. Fixing bar; 42. Fixing groove; 43. Fixing hole; 44. Fixing screw; 5. Chip groove; 6. Fixing bearing; 7. Fixing ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0022] like Figures 1 to 4 As shown, a tapered thread milling cutter with an internal cooling structure includes a milling cutter fixing handle 1, one end of which is connected to a milling cutter body 2, a cooling mechanism for cooling the milling cutter is provided on the outer surface of the milling cutter fixing handle 1, and a disassembly mechanism for disassembling the milling cutter is fixed to the end of the milling cutter fixing handle 1;

[0023] The cooling mechanism includes a protective shell 3, which is sleeved on the outer surface of the milling cutter fixing handle 1. The outer wall of the protective shell 3 is provided with a water inlet 31, and the outer wall of the milling cutter fixing handle 1 is provided with a through hole 32 interconnected with the protective shell 3. The interior of the milling cutter fixing handle 1 is provided with a flow cavity 33 interconnected with the through hole 32, and the end of the milling cutter body 2 is provided with a discharge hole 34 interconnected with the flow cavity 33. The disassembly mechanism includes a connecting rod 4, which is fixed to the end of the milling cutter fixing handle 1. Two fixing bars 41 are fixed on the outer surface of the connecting rod 4. The outer surfaces of the two fixing bars 41 are plugged and connected with a fixing groove 42 opened on the inner wall of the milling cutter body 2. The machine tool drives the milling cutter into the cooling mechanism. The protective shell 3 rotates, thereby driving the milling cutter body 2 to mill the workpiece, and the water inlet 31 provided on the protective shell 3 is connected to the external water pipe, so that the coolant can enter the protective shell 3, and the cooling water then flows into the flow cavity 33 in the milling cutter fixed handle 1 through the through hole 32, and then is discharged to the outside through the discharge hole 34 on the milling cutter body 2. Since the milling cutter body 2 is in the cutting hole of the workpiece, the sprayed cooling water will flow out from the hole of the workpiece, and when the cooling water passes through the chip groove 5, the waste chips can be flushed out, and the cooling water can cool the milling cutter body 2, effectively reduce the situation where the temperature of the milling cutter body 2 is too high, and improve the service life of the milling cutter. Example 2

[0024] In addition to all the technical features of Example 1, this embodiment also includes: two fixing holes 43 are provided on the outer wall of the connecting rod 4, and the inside of the two fixing holes 43 are plugged with fixing screws 44 threadedly connected to the milling cutter body 2, and the outer surface of the milling cutter body 2 is provided with four chip removal grooves 5, and the inner wall of the protective shell 3 is inlaid with a fixed bearing 6, and the interior of the fixed bearing 6 is provided with a fixing ring 7 fixedly connected to the milling cutter fixing handle 1. Through the fixed bearing 6 arranged in the protective shell 3, with the cooperation of the fixing ring 7, when the milling cutter fixing handle 1 rotates, the protective shell 3 will not be driven to rotate, thereby ensuring the normal delivery of cooling water. When the milling cutter body 2 is damaged, the fixing screws 44 on the milling cutter body 2 can be unscrewed to separate the fixing screws 44 and the fixing holes 43 on the connecting rod 4. With the cooperation of the fixing bar 41 and the fixing groove 42, the milling cutter body 2 and the milling cutter fixing handle 1 can be disassembled, and the milling cutter body 2 can be replaced separately.

[0025] Working principle: Before using the tapered thread milling cutter with an internal cooling structure, first connect and fix the milling cutter to the output end of the driving machine tool, connect the milling cutter fixing handle 1 to the output shaft, and then fix the milling cutter. The machine tool drives the milling cutter to rotate, thereby driving the milling cutter body 2 to mill the workpiece, and the water inlet 31 provided on the protective shell 3 is connected to the external water pipe, so that the coolant can enter the protective shell 3, and the cooling water then flows into the flow cavity 33 in the milling cutter fixing handle 1 through the through hole 32, and then is discharged to the outside through the discharge hole 34 on the milling cutter body 2. Since the milling cutter body 2 is in the cutting hole of the workpiece, the sprayed cooling water will flow out from the hole in the workpiece, and the cooling water When passing through the chip groove 5, the waste chips can be flushed out, and the cooling water can cool the milling cutter body 2, effectively reducing the situation where the milling cutter body 2 is overheated, and improving the service life of the milling cutter. Through the fixed bearing 6 arranged in the protective shell 3, with the cooperation of the fixing ring 7, when the milling cutter fixed handle 1 rotates, it will not drive the protective shell 3 to rotate, thereby ensuring the normal delivery of cooling water. When the milling cutter body 2 is damaged, the fixing screw 44 on the milling cutter body 2 can be unscrewed, so that the fixing screw 44 and the fixing hole 43 on the connecting rod 4 are separated. With the cooperation of the fixing bar 41 and the fixing groove 42, the milling cutter body 2 and the milling cutter fixed handle 1 can be disassembled, and the milling cutter body 2 can be replaced separately, thereby improving practicality.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0027] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A tapered thread milling cutter with an internal cooling structure, comprising a milling cutter fixing handle (1), characterized in that: One end of the milling cutter fixing handle (1) is connected to a milling cutter body (2), an outer surface of the milling cutter fixing handle (1) is provided with a cooling mechanism for cooling the milling cutter, and a disassembly mechanism for disassembling the milling cutter is fixed to the end of the milling cutter fixing handle (1); The cooling mechanism comprises a protective shell (3), the protective shell (3) being sleeved on the outer surface of the milling cutter fixing handle (1), the outer wall of the protective shell (3) being provided with a water inlet (31), the outer wall of the milling cutter fixing handle (1) being provided with a through hole (32) communicating with the protective shell (3), the interior of the milling cutter fixing handle (1) being provided with a flow cavity (33) communicating with the through hole (32), and the end of the milling cutter body (2) being provided with a discharge hole (34) communicating with the flow cavity (33).

2. The tapered thread milling cutter with an internal cooling structure according to claim 1, characterized in that: The disassembly mechanism comprises a connecting rod (4), and the connecting rod (4) is fixed to the end of the milling cutter fixing handle (1).

3. The tapered thread milling cutter with an internal cooling structure according to claim 2, characterized in that: Two fixing bars (41) are fixed to the outer surface of the connecting rod (4), and the outer surfaces of the two fixing bars (41) are plug-connected with fixing grooves (42) provided on the inner wall of the milling cutter body (2).

4. The tapered thread milling cutter with an internal cooling structure according to claim 3, characterized in that: Two fixing holes (43) are provided on the outer wall of the connecting rod (4).

5. The tapered thread milling cutter with an internal cooling structure according to claim 4, characterized in that: The interiors of the two fixing holes (43) are plugged with fixing screws (44) that are threadedly connected to the milling cutter body (2).

6. The tapered thread milling cutter with an internal cooling structure according to claim 1, characterized in that: Four chip removal grooves (5) are provided on the outer surface of the milling cutter body (2).

7. The tapered thread milling cutter with an internal cooling structure according to claim 1, characterized in that: The inner wall of the protective shell (3) is inlaid with a fixed bearing (6), and the interior of the fixed bearing (6) is provided with a fixed ring (7) fixedly connected to the milling cutter fixed handle (1).

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