Ball-end milling cutter for machining aero-engine blade

Abstract

The utility model belongs to the technical field of machining of engine blades, particularly relates to a ball-end milling cutter for machining of aero-engine blades, and provides the following scheme aiming at the problem that the existing ball-end milling cutter is troublesome to replace: the ball-end milling cutter comprises a cutter bar, a cutter head is arranged below the cutter bar, and a replacing mechanism is arranged in the cutter bar; the replacement mechanism comprises a penetrating rod, the penetrating rod is fixed to the end, penetrating into the cutter bar, of the cutter head, a limiting rod is fixed to the outer wall of the penetrating rod, a clamping groove is formed in the position, corresponding to the penetrating rod, of the lower portion of the interior of the cutter bar, and a sliding groove is formed in the outer wall of the cutter bar. The tool bar and the tool bit are initially connected, the lantern ring slides, the abutting block slides along the sliding groove, and therefore the positioning block fixed by the abutting block penetrates into the positioning hole, the penetrating rod can be pressed and limited under connection of the threaded sleeve, the stability after connection is improved, and the tool bar and the tool bit can be rapidly disassembled and assembled.

Description

TECHNICAL FIELD

[0001] The utility model relates to a milling cutter for engine blade processing, in particular to a ball head milling cutter for aero-engine blade processing and belongs to the technical field of milling cutter. BACKGROUND

[0002] The ball head milling cutter is a cutter with a ball head blade assembled on a milling machine for milling various curved surfaces and circular arc grooves. The ball head milling cutter is also called R cutter. It can mill die steel, cast iron, carbon steel, alloy steel, tool steel, and general iron materials. It is a vertical milling cutter and can operate normally in high-temperature environments, making it suitable for aero-engine blades made of relatively hard materials.

[0003] In the prior art, such as the ball head milling cutter for aero-engine blade processing disclosed in CN216575746U, when connecting the cutter handle and the cutter rod, the connecting sleeve and the screwing piece are first sleeved on the cutter handle, the upper part of the cutter rod is inserted into the connecting groove, the insertion plate is inserted into the insertion groove, and then the screwing piece is rotated by a tool to threadedly connect the screwing piece to the cutter handle, thereby achieving the connection of the cutter handle and the cutter rod. When the cutter rod needs to be disassembled, the screwing piece is rotated in the opposite direction to separate the screwing piece from the cutter handle, and the cutter rod can be removed from the cutter handle. When the cutter head is damaged, the cutter rod can be removed from the cutter handle, and a new cutter rod and cutter head can be installed, without the need to replace the entire cutter handle, cutter rod, and cutter head.

[0004] However, in the implementation of the related technology, it is found that the ball head milling cutter for aero-engine blade processing has the following problems: although the existing technology can replace the cutter rod and cutter head, in actual use, multiple operations are required to replace them, resulting in low efficiency and inconvenience. Therefore, a ball head milling cutter for aero-engine blade processing is provided to overcome the above-mentioned defects. INVENTION CONTENTS

[0005] The utility model discloses a ball head milling cutter for aero-engine blade processing to solve the technical problem that multiple operations are required to replace the cutter rod and cutter head, resulting in low efficiency and inconvenience.

[0006] The utility model discloses a ball head milling cutter for aero-engine blade processing to solve the technical problem that multiple operations are required to replace the cutter rod and cutter head, resulting in low efficiency and inconvenience.

[0007] The replacement mechanism comprises a penetrating rod, the penetrating rod is fixed at one end of a tool head penetrating tool rod, and a limiting rod is fixed to the outer wall of the penetrating rod; a clamping groove is formed in the tool rod inside and below the position corresponding to the penetrating rod; a sliding groove is formed in the outer wall of the tool rod; a contact block is slidably connected in the sliding groove of the outer wall of the tool rod; a collar is fixed to one end of the contact block penetrating out of the sliding groove; and a threaded sleeve is sleeved on one side of the outer sliding groove of the tool rod.

[0008] As a further scheme of the utility model, the limiting rod and the tool rod form a sliding structure through the clamping groove, and the tool rod and the penetrating rod form a sliding structure.

[0009] As a further scheme of the utility model, the threaded sleeve and the tool rod are threadedly connected, and the tool rod and the threaded sleeve form a sliding structure.

[0010] As a further scheme of the utility model, the bottom end of the contact block is fixed with a positioning block, and the top end of the penetrating rod is provided with a positioning hole.

[0011] As a further scheme of the utility model, one side of the threaded sleeve is provided with an anti-sputtering mechanism, the anti-sputtering mechanism comprises a connecting plate, the connecting plate is arranged between the collar and the threaded sleeve, the outer wall of the connecting plate is fixed with a baffle, and a through hole is formed in the connecting plate inside and at the position corresponding to the tool rod.

[0012] As a further scheme of the utility model, the anti-sputtering mechanism further comprises a limiting column, the limiting column is fixed to the top end of the collar, and a limiting hole is formed in the connecting plate inside and at the position corresponding to the limiting column.

[0013] As a further scheme of the utility model, the collar is closely attached to the connecting plate, and the connecting plate is closely attached to the threaded sleeve.

[0014] The utility model discloses the beneficial effect is: the limiting rod of penetrating rod outer wall slides along the clamping groove and rotates and engages, and the tool rod and the tool head are preliminarily linked, the sliding collar is slid, and the contact block slides along the sliding groove, thereby the positioning block fixed with the contact block penetrates into the positioning hole, under the linking of the threaded sleeve, the penetrating rod can be compressed and limited to improve the stability after connection, thereby the tool rod and the tool head can be quickly disassembled and assembled.

[0015] The connecting plate is sleeved outside the limiting column through the limiting hole, is sleeved outside the tool rod through the through hole and is located between the collar and the threaded sleeve, convenient for disassembling, and the fixed baffle plays a shielding effect, and splashing of debris during work is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is whole structure schematic diagram of the utility model;

[0017] Fig. 2The utility model discloses a schematic diagram of the penetrating rod structure.

[0018] Fig. 3 The utility model discloses a schematic diagram of the resisting block structure.

[0019] Fig. 4 The utility model discloses a schematic diagram of the limiting hole structure.

[0020] In the figure: 1, cutter bar;2, cutter head;3, replacement mechanism;301, penetrating rod;302, limiting rod;303, clamping groove;304, collar;305, resisting block;306, sliding slot;307, threaded sleeve;4, positioning block;5, positioning hole;6, anti-sputtering mechanism;601, connecting plate;602, baffle;603, through hole;604, limiting column;605, limiting hole. DETAILED DESCRIPTION

[0021] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model. Embodiment one

[0022] As Figs. 1 to 4 shown, a ball head milling cutter for aero-engine blade machining, including cutter bar 1, the lower portion of cutter bar 1 is provided with cutter head 2, the inside of cutter bar 1 is provided with replacement mechanism 3;Replacement mechanism 3 includes penetrating rod 301, penetrating rod 301 is fixed in the one end of cutter head 2 penetrating cutter bar 1, the outer wall of penetrating rod 301 is fixed with limiting rod 302, the position corresponding to penetrating rod 301 is provided with clamping groove 303 in the inside lower portion of cutter bar 1, the outer wall of cutter bar 1 is provided with sliding slot 306, the inside sliding connection of sliding slot 306 of cutter bar 1 outer wall is provided with resisting block 305, the one end of resisting block 305 penetrating sliding slot 306 is fixed with collar 304, the one side of sliding slot 306 of cutter bar 1 outer portion is provided with threaded sleeve 307, limiting rod 302 and cutter bar 1 between the structure of sliding structure is formed by clamping groove 303, the sliding structure is formed between cutter bar 1 and penetrating rod 301, threaded sleeve 307 and cutter bar 1 are connected in screw thread, the sliding structure is formed between cutter bar 1 and threaded sleeve 307, the bottom end of resisting block 305 is fixed with positioning block 4, the top end of penetrating rod 301 is provided with positioning hole 5;Limiting rod 302 of the outer wall of penetrating rod 301 is along clamping groove 303 and is rotated and engaged, let cutter bar 1 and cutter head 2 preliminary link, sliding collar 304, let resisting block 305 along sliding slot 306 slide, so that the fixed positioning block 4 of resisting block 305 penetrates positioning hole 5, under the link of threaded sleeve 307, can to penetrating rod 301 compression and limiting improve the stability of connection, so that cutter bar 1 and cutter head 2 can be quickly disassembled. Embodiment two

[0023] In addition to comprising all the technical features in embodiment one, the embodiment comprises: one side of the threaded sleeve 307 is provided with a splash-proof mechanism 6, the splash-proof mechanism 6 comprises a connecting plate 601, the connecting plate 601 is arranged between the sleeve ring 304 and the threaded sleeve 307, an outer wall of the connecting plate 601 is fixed with a baffle 602, a through hole 603 is arranged in the connecting plate 601 corresponding to the position of the cutter bar 1, the splash-proof mechanism 6 further comprises a limiting column 604, the limiting column 604 is fixed at the top end of the sleeve ring 304, a limiting hole 605 is arranged in the connecting plate 601 corresponding to the position of the limiting column 604, the sleeve ring 304 is closely attached to the connecting plate 601, and the connecting plate 601 is closely attached to the threaded sleeve 307; the connecting plate 601 is sleeved outside the limiting column 604 through the limiting hole 605, and is sleeved outside the cutter bar 1 through the through hole 603 and is located between the sleeve ring 304 and the threaded sleeve 307, which facilitates disassembly and assembly, and the fixed baffle 602 plays a shielding effect to avoid splashing of debris during work.

[0024] Working principle: the penetrating rod 301 of the tool bit 2 penetrates into the cutter bar 1, the limiting rod 302 slides along the clamping groove 303 and is clamped, the sleeve ring 304 fixedly arranged abutting block 305 slides along the sliding groove 306, the abutting block 305 abuts against the penetrating rod 301, and after adjustment through threaded sleeve 307 and threaded connection with the cutter bar 1, the abutting block 305 is pressed tightly, so that the tool bit 2 can be quickly disassembled and assembled, the positioning block 4 penetrates into the positioning hole 5 to further improve the stability, avoid the tool bit 2 from loosening, the connecting plate 601 slides along the cutter bar 1 through the through hole 603, and is sleeved outside the limiting column 604 through the limiting hole 605, the threaded sleeve 307 presses the connecting plate 601 to be fixed, and the baffle 602 can play a splash-proof effect on the debris during the work of the cutter.

[0025] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0026] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. A ball-end milling cutter for machining aero-engine blades, comprising a cutter bar (1), characterized in that: A cutter head (2) is provided below the cutter bar (1), and a replacement mechanism (3) is provided inside the cutter bar (1); The replacement mechanism (3) includes an insertion rod (301), the insertion rod (301) is fixed to one end of the cutter head (2) that penetrates the cutter rod (1), and a limiting rod (302) is fixed to the outer wall of the insertion rod (301), a slot (303) is provided at the lower part of the interior of the cutter rod (1) corresponding to the position of the insertion rod (301), and a sliding groove (306) is provided on the outer wall of the cutter rod (1), a resistance block (305) is slidably connected to the inner part of the sliding groove (306) on the outer wall of the cutter rod (1), and a collar (304) is fixed to one end of the resistance block (305) that penetrates the sliding groove (306), and a threaded sleeve (307) is provided on one side of the sliding groove (306) outside the cutter rod (1).

2. The ball-end milling cutter for machining aero-engine blades according to claim 1, characterized in that: The limiting rod (302) forms a sliding structure with the knife rod (1) through the clamping groove (303), and the knife rod (1) forms a sliding structure with the penetration rod (301).

3. The ball-end milling cutter for machining aero-engine blades according to claim 1, characterized in that: The threaded sleeve (307) is threadedly connected to the knife rod (1), and a sliding structure is formed between the knife rod (1) and the threaded sleeve (307).

4. The ball-end milling cutter for machining aero-engine blades according to claim 1, characterized in that: A positioning block (4) is fixed to the bottom end of the interference block (305), and a positioning hole (5) is provided at the top end of the penetration rod (301).

5. The ball-end milling cutter for machining aero-engine blades according to claim 1, characterized in that: An anti-splashing mechanism (6) is provided on one side of the threaded sleeve (307), and the anti-splashing mechanism (6) includes a connecting plate (601). The connecting plate (601) is provided between the collar (304) and the threaded sleeve (307), and a baffle (602) is fixed to the outer wall of the connecting plate (601). A through hole (603) is provided inside the connecting plate (601) at a position corresponding to the knife rod (1).

6. The ball-end milling cutter for machining aero-engine blades according to claim 5, characterized in that: The anti-sputtering mechanism (6) further comprises a limiting post (604), wherein the limiting post (604) is fixed to the top end of the collar (304), and a limiting hole (605) is provided inside the connecting plate (601) at a position corresponding to the limiting post (604).

7. The ball-end milling cutter for machining aircraft engine blades according to claim 5, characterized in that: The collar (304) is tightly fitted to the connecting plate (601), and the connecting plate (601) is tightly fitted to the threaded sleeve (307).

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