Milling cutter for producing turbine blade of aero-engine

Abstract

The utility model belongs to the technical field of machining cutters, and particularly relates to a milling cutter for producing turbine blades of aero-engines, which comprises an alloy cutter handle and an alloy cutter head fixed at the bottom end of the alloy cutter handle, and further comprises a protective sleeve, a milling cutter head, a milling cutter head and a milling cutter head, the rubber sheet is bonded and fixed to the top end of the protective sleeve, and a through hole allowing the alloy knife handle to penetrate through is formed in the rubber sheet; the bearing is fixed on the protective sleeve, and the inner ring of the bearing is fixedly connected with the bottom end of the protective sleeve; the rubber ring is fixed on the bottom surface of the outer ring of the bearing; according to the alloy cutter, the protection effect is further improved through the arranged rubber sheet, scraps are prevented from splashing from a gap between the protection sleeve and the alloy cutter handle, the situation that the blade is abraded due to the fact that relative friction is generated between the protection sleeve and the blade is avoided through the arranged bearing and the arranged rubber ring, and the machining safety is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining tools, and in particular relates to a milling cutter for producing turbine blades of aviation engines. Background Art

[0002] A ball end mill is a tool with a blade similar to a ball end that is mounted on a milling machine and is used to mill various curved surfaces and circular grooves. A ball end mill is a tool with a blade similar to a ball end that is mounted on a milling machine and is used to mill various curved surfaces and circular grooves. A ball end mill is also called an R cutter. A ball end mill can mill mold steel, cast iron, carbon steel, alloy steel, tool steel, and general iron materials. It is an end mill. A ball end mill can operate normally in a high temperature environment. Turbine blades, as the core component of aircraft engines, require a ball end mill for milling during processing.

[0003] During processing, metal chips will fly around. In order to avoid the chips from flying around and injuring people, and to prevent the milling cutter from accidentally breaking and splashing around and injuring people, protective measures are usually set on the tool.

[0004] It was retrieved that in the prior art, a Chinese utility model patent with authorization announcement number CN221064579U discloses "a ball-end milling cutter for machining aircraft engine blades", comprising a tool handle, a connecting groove 1 is provided on one side of the tool handle, a disassembly assembly component is provided on the inner side wall of the connecting groove 1, a connecting block is clamped at the bottom of the tool handle, connecting grooves 2 are provided on both sides of the connecting block, the disassembly assembly component is connected to the connecting grooves 2, a milling cutter body is fixedly installed at the bottom of the connecting block, fixing plates are fixedly installed on both sides of the tool handle, a round rod is fixedly installed at the bottom of the fixing plate, a spring is sleeved on the side wall of the round rod, and a limiting block is fixedly installed at the bottom end of the round rod to reduce the possibility of scratches after breakage.

[0005] Although the ball-end milling cutters in the prior art, including those mentioned above, can meet general protection needs, in actual use, because the milling cutter needs to rotate at high speed when working, and the blades being processed are generally stationary, this causes relative friction between the sliding frame and the workpiece, which can easily cause blade wear.

[0006] In order to solve the above problems, the present application proposes a milling cutter for producing aircraft engine turbine blades. Utility Model Content

[0007] In order to solve the above problems existing in the prior art, the utility model provides a milling cutter for producing aircraft engine turbine blades, which has the characteristics of easy use and high safety performance.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a milling cutter for producing turbine blades of an aircraft engine, comprising an alloy tool holder and an alloy tool head fixed to the bottom end of the alloy tool holder, and further comprising:

[0009] A protective sleeve, which is sleeved on the alloy cutter head and elastically connected to the alloy cutter handle;

[0010] A rubber sheet, the rubber sheet is bonded and fixed to the top end of the protective sleeve, and the rubber sheet has a through hole for the alloy knife handle to pass through;

[0011] A bearing, wherein the bearing is fixed on the protective sleeve, and the inner ring of the bearing is fixedly connected to the bottom end of the protective sleeve;

[0012] A rubber ring is fixed to the bottom surface of the outer ring of the bearing.

[0013] As a preferred technical solution of the utility model, it also includes:

[0014] A number one fixing block, a plurality of said number one fixing blocks being fixed to the outer wall of said alloy knife handle at equal intervals along the circumferential direction;

[0015] A number-two fixing block, a plurality of number-two fixing blocks being fixed to the outer wall of the protective sleeve at equal intervals along the circumferential direction;

[0016] A threaded screw, the threaded screw is fixed to the bottom surface of the first fixing block, and the threaded screw passes through the second fixing block;

[0017] A locking nut, the locking nut being installed on the protruding end of the threaded screw by means of a threaded engagement;

[0018] A return spring is sleeved on the threaded screw and is located between the first fixing block and the second fixing block.

[0019] As a preferred technical solution of the utility model, the rubber sheet is provided with a plurality of deformation seams which are evenly spaced along the circumferential direction, and the deformation seams are communicated with the through holes.

[0020] As a preferred technical solution of the utility model, it also includes:

[0021] A connecting block, the connecting block is integrally formed at the top of the alloy cutter head, and has a locking hole on the connecting block, and a mounting groove for embedding the connecting block at the bottom of the alloy cutter handle;

[0022] Clamping plates, two of which are symmetrically distributed in the mounting groove;

[0023] A locking pin, the locking pin being fixed to the clamping plate and embedded in the locking hole;

[0024] An adjusting screw, wherein the adjusting screw is mounted on the alloy knife handle by screwing, and an end of the adjusting screw is rotatably connected to the clamping plate;

[0025] A regular hexagonal knob is fixed to an end of the adjusting screw away from the clamping plate.

[0026] As a preferred technical solution of the utility model, it also includes:

[0027] Guide rods, two of which are symmetrically fixed on the clamping plate, and the guide rods penetrate the alloy knife handle.

[0028] As a preferred technical solution of the present utility model, the width of the connecting block is equal to the width of the installation groove.

[0029] As a preferred technical solution of the present utility model, the outer wall of the locking pin abuts against the inner wall of the locking hole.

[0030] As a preferred technical solution of the utility model, two locking pins distributed at intervals are fixed on the same clamping plate.

[0031] Compared with the prior art, the beneficial effects of the utility model are:

[0032] In the utility model, the protective effect is further improved by the provision of a rubber sheet, which prevents debris from splashing from the gap between the protective sleeve and the alloy knife handle. The provision of a bearing and a rubber ring prevents relative friction between the protective sleeve and the blade from causing blade wear, thereby improving processing safety.

[0033] Other additional advantages and beneficial effects of the present application will be given in part in the following description, and in part will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0035] Figure 1 It is a schematic diagram of the structure of the utility model;

[0036] Figure 2 It is a schematic diagram of the cross-sectional structure in the utility model;

[0037] Figure 3 For this utility model Figure 2 A in the figure is an enlarged structural diagram.

[0038] In the figure: 1. Alloy knife handle; 11. No. 1 fixing block; 12. Mounting slot; 2. Alloy knife head; 21. Connecting block; 211. Locking hole; 3. Protective sleeve; 31. No. 2 fixing block; 4. Threaded screw; 5. Locking nut; 6. Reset spring; 7. Rubber sheet; 71. Through hole; 72. Expansion joint; 8. Bearing; 9. Rubber ring; 10. Clamp; 101. Locking pin; 102. Adjusting screw; 103. Hexagonal knob; 104. Guide rod. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] See also Figure 1-Figure 3 The utility model provides the following technical solutions: a milling cutter for producing aircraft engine turbine blades, comprising an alloy shank 1 and an alloy cutter head 2 fixed to the bottom end of the alloy shank 1, and also comprising: a protective sleeve 3, a rubber sheet 7, a bearing 8 and a rubber ring 9.

[0041] Further, by Figure 1 and Figure 2 As shown, in this embodiment, the protective sleeve 3 is sleeved on the alloy cutter head 2 and elastically connected to the alloy tool handle 1, the rubber sheet 7 is bonded and fixed to the top of the protective sleeve 3, and a through hole 71 is provided on the rubber sheet 7 for the alloy tool handle 1 to pass through, the bearing 8 is fixed on the protective sleeve 3, and the inner ring of the bearing 8 is fixedly connected to the bottom end of the protective sleeve 3, and the rubber ring 9 is fixed to the bottom surface of the outer ring of the bearing 8. After adopting the above scheme, when in use, the alloy tool handle 1 is fixed on the tool seat of the machine tool, the blade is clamped by a clamp, and the blade is milled by the alloy cutter head 2. During the processing, the protective sleeve 3 effectively prevents debris from splashing, and the rubber ring 9 can resist the blade. The protective sleeve 3 will rotate with the rotation of the alloy cutter head 2, and the rubber ring 9 will not rotate, so as to prevent the protective sleeve 3 and the blade from generating relative friction and causing the blade to wear, thereby improving the safety of the processing. The protective effect is further improved by setting the rubber sheet 7 to prevent debris from splashing from the gap between the protective sleeve 3 and the alloy tool handle 1.

[0042] Optionally, by Figure 1 and Figure 2As shown, in this embodiment, it also includes: a No. 1 fixing block 11, a No. 2 fixing block 31, a locking nut 5 and a reset spring 6. A plurality of No. 1 fixing blocks 11 are fixed to the outer wall of the alloy tool handle 1 at equal intervals along the circumferential direction, and a plurality of No. 2 fixing blocks 31 are fixed to the outer wall of the protective sleeve 3 at equal intervals along the circumferential direction. The threaded screw 4 is fixed to the bottom surface of the No. 1 fixing block 11, and the threaded screw 4 passes through the No. 2 fixing block 31. The locking nut 5 is installed on the protruding end of the threaded screw 4 by threaded engagement. The reset spring 6 is sleeved on the threaded screw 4 and is located between the No. 1 fixing block 11 and the No. 2 fixing block 31. After adopting the above scheme, when the alloy cutter head 2 is fed, the reset spring 6 contracts, and the rubber ring 9 always presses against the blade. When the alloy cutter head 2 is separated from the blade, the reset spring 6 releases the elastic force and the protective sleeve 3 is reset.

[0043] Preferably, by Figure 1 As shown, in this embodiment, the rubber sheet 7 is provided with a plurality of deformation seams 72 which are evenly spaced along the circumferential direction, and the deformation seams 72 are connected to the through holes 71. The presence of the deformation seams 72 enables the alloy handle 1 to be deformed during feeding, thereby reducing the resistance between the rubber sheet 7 and the alloy handle 1 while ensuring the protective effect.

[0044] Optionally, by Figure 1-Figure 3 As shown, in this embodiment, it also includes: a connecting block 21, a clamping plate 10, a locking pin 101, an adjusting screw 102 and a regular hexagonal knob 103. The connecting block 21 is integrally formed at the top of the alloy tool head 2, and a locking hole 211 is provided on the connecting block 21. The bottom end of the alloy tool handle 1 has a mounting groove 12 for the connecting block 21 to be embedded. The two clamping plates 10 are symmetrically distributed in the mounting groove 12. The locking pin 101 is fixed on the clamping plate 10 and embedded in the locking hole 211. The adjusting screw 102 is installed on the alloy tool handle 1 by screwing, and the end of the adjusting screw 102 is rotatably connected to the clamping plate 10. The hexagonal knob 103 is fixed to the end of the adjusting screw 102 away from the clamping plate 10. After adopting the above scheme, when installing the alloy cutter head 2, the connecting block 21 is inserted into the installation groove 12, and then the hexagonal knob 103 is screwed, so that the adjusting screw 102 pushes the clamping plate 10 to move under the action of the thread rotation, and the connecting block 21 is clamped by the clamping plates 10 on both sides, and the locking pin 101 is inserted into the locking hole 211 for further locking, thereby ensuring the stability of the installation of the alloy cutter head 2. The above scheme can realize the detachable installation of the alloy cutter head 2, and while ensuring the installation stability, it is also convenient to disassemble and replace the alloy cutter head 2.

[0045] Preferably, by Figure 1-Figure 3As shown, in this embodiment, it also includes: guide rods 104, two guide rods 104 are symmetrically fixed on the splint 10, and the guide rods 104 pass through the alloy knife handle 1. The two guide rods 104 are used to guide the splint 10, thereby improving the stability of the splint 10.

[0046] Preferably, by Figure 1-Figure 3 As shown, in this embodiment, the width of the connecting block 21 is equal to the width of the installation groove 12, which further ensures the stability of the installation of the alloy cutter head 2 and avoids shaking.

[0047] Preferably, by Figure 1-Figure 3 As shown, in this embodiment, the outer wall of the locking pin 101 abuts against the inner wall of the locking hole 211, which has high stability and further prevents the alloy tool head 2 from shaking relative to the alloy tool handle 1 during operation.

[0048] Preferably, by Figure 1-Figure 3 As shown, in this embodiment, two locking pins 101 are fixed on the same clamping plate 10 and are spaced apart from each other, which further improves the installation stability of the alloy cutter head 2 and effectively prevents the alloy cutter head 2 from shaking or rotating relative to each other.

[0049] Components not described in detail herein are prior art.

[0050] Working principle and use process of the utility model: When the milling cutter of the utility model is used, the alloy tool handle 1 is fixed on the tool seat of the machine tool, the blade is clamped by a fixture, and the blade is milled by the alloy tool head 2;

[0051] During processing, the protective sleeve 3 effectively prevents debris from splashing, and the rubber ring 9 can resist the blade. The protective sleeve 3 will rotate with the rotation of the alloy cutter head 2, and the rubber ring 9 will not rotate, so as to prevent the relative friction between the protective sleeve 3 and the blade from causing blade wear, thereby improving the safety of processing. The protective effect is further improved by the provision of the rubber sheet 7, so as to prevent debris from splashing from the gap between the protective sleeve 3 and the alloy tool handle 1.

[0052] The alloy cutter head 2 is detachable. When installing the alloy cutter head 2, insert the connecting block 21 into the installation groove 12, and then screw the hexagonal knob 103 to make the adjusting screw 102 push the clamping plate 10 to move under the action of thread rotation. The connecting block 21 is clamped by the clamping plates 10 on both sides, and the locking pin 101 is inserted into the locking hole 211 for further locking, thereby ensuring the stability of the installation of the alloy cutter head 2 and facilitating the disassembly and replacement of the alloy cutter head 2.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A milling cutter for producing aircraft engine turbine blades, comprising an alloy shank (1) and an alloy cutter head (2) fixed to the bottom end of the alloy shank (1), characterized in that: Also includes: A protective sleeve (3), the protective sleeve (3) being sleeved on the alloy cutter head (2) and elastically connected to the alloy cutter handle (1); A rubber sheet (7), the rubber sheet (7) being bonded and fixed to the top end of the protective sleeve (3), and having a through hole (71) for the alloy knife handle (1) to pass through on the rubber sheet (7); A bearing (8), wherein the bearing (8) is fixed on the protective sleeve (3), and the inner ring of the bearing (8) is fixedly connected to the bottom end of the protective sleeve (3); A rubber ring (9), wherein the rubber ring (9) is fixed to the bottom surface of the outer ring of the bearing (8).

2. A milling cutter for producing aircraft engine turbine blades according to claim 1, characterized in that: Also includes: A number one fixing block (11), a plurality of the number one fixing blocks (11) being fixed to the outer wall of the alloy knife handle (1) at equal intervals along the circumferential direction; A second fixing block (31), wherein a plurality of the second fixing blocks (31) are fixed to the outer wall of the protective sleeve (3) at equal intervals along the circumferential direction; A threaded screw (4), the threaded screw (4) being fixed to the bottom surface of the first fixing block (11), and the threaded screw (4) passing through the second fixing block (31); A locking nut (5), wherein the locking nut (5) is mounted on the protruding end of the threaded screw rod (4) by means of a threaded engagement; A return spring (6), wherein the return spring (6) is sleeved on the threaded screw (4) and is located between the first fixing block (11) and the second fixing block (31).

3. A milling cutter for producing aircraft engine turbine blades according to claim 1, characterized in that: The rubber sheet (7) is provided with a plurality of deformation slits (72) distributed at equal intervals along the circumferential direction, and the deformation slits (72) are communicated with the through holes (71).

4. A milling cutter for producing aircraft engine turbine blades according to claim 1, characterized in that: Also includes: A connecting block (21), the connecting block (21) being integrally formed at the top end of the alloy cutter head (2), and having a locking hole (211) on the connecting block (21), and having a mounting groove (12) for embedding the connecting block (21) at the bottom end of the alloy cutter handle (1); A clamping plate (10), wherein two clamping plates (10) are symmetrically distributed in the mounting groove (12); A locking pin (101), the locking pin (101) being fixed on the clamping plate (10) and embedded in the locking hole (211); An adjusting screw (102), wherein the adjusting screw (102) is mounted on the alloy knife handle (1) by means of a threaded engagement, and an end of the adjusting screw (102) is rotatably connected to the clamping plate (10); A regular hexagonal knob (103) is fixed to an end of the adjusting screw (102) away from the clamping plate (10).

5. A milling cutter for producing aircraft engine turbine blades according to claim 4, characterized in that: Also includes: Guide rods (104), two guide rods (104) are symmetrically fixed on the clamping plate (10), and the guide rods (104) penetrate the alloy knife handle (1).

6. A milling cutter for producing aircraft engine turbine blades according to claim 4, characterized in that: The width of the connecting block (21) is equal to the width of the installation groove (12).

7. A milling cutter for producing aircraft engine turbine blades according to claim 4, characterized in that: The outer wall of the locking pin (101) abuts against the inner wall of the locking hole (211).

8. A milling cutter for producing aircraft engine turbine blades according to claim 7, characterized in that: Two locking pins (101) are fixed on the same clamping plate (10) and are spaced apart from each other.

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