Special cutter for machining blade groove

Abstract

The utility model discloses a special cutter for processing a blade groove. The special cutter comprises a cutter bar and a blade, a screw used for locking the blade is arranged on the head of the cutter bar in the radial direction. A blade groove used for containing the blade is formed in the head of the cutter bar in the axial direction. The blade is formed by integrally and fixedly arranging a blade main body and a blade edge body; the blade main body is accommodated in the blade groove and is locked with the cutter bar through a screw; the blade edge body is formed by integrally and fixedly arranging a left hand edge and a right hand edge; and the blade surfaces of the left blade and the right blade are arranged outwards. By widening the width of the blade main body and shortening the length of the blade main body, the rigidity of the cutter is enhanced, and the machining stability is improved; the left hand blade and the right hand blade are combined and arranged in a staggered mode, one-time machining of parts can be completed, tool clamping and tool setting time is saved, and machining efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical processing tools, and in particular relates to a special tool for processing blade grooves. Background Art

[0002] The structures of aircraft engine casing parts are becoming increasingly complex, and most of them are large, thin-walled components. Casing deformation significantly impacts the assembly accuracy, performance, and reliability of the engine, and seriously hinders the development of aircraft engines. As design precision requirements continue to increase, so too do manufacturing precision requirements. The following problems exist when machining casing blade grooves using conventional L-shaped grooving cutters: 1. The grooving cutter blade body is small in width (4mm) and has low rigidity, which can easily cause slight torsional deformation of the blade during turning, resulting in severe blade bottom vibration marks; 2. The grooving cutter head cantilever is too long, further reducing the grooving cutter strength, affecting turning processability, and resulting in unqualified product surface quality; 3. The blade grooves require front and rear grooves, which requires adjustment of the blade cutting direction, resulting in repeated tool installation and alignment, reducing production efficiency. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a special tool for machining blade grooves, which aims to improve the stability of groove cutter machining and reduce the time for repeated tool installation and setting.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A special tool for processing blade grooves, comprising a tool rod and a blade; a screw for locking the blade is radially provided on the head of the tool rod; a blade groove for accommodating the blade is axially provided on the head of the tool rod; the blade is fixed integrally by a blade body and a blade cutting edge; the blade body is accommodated in the blade groove and locked to the tool rod by a screw; the blade cutting edge is fixed integrally by a left-hand cutting edge and a right-hand cutting edge; the left-hand cutting edge and the right-hand cutting edge are arranged with their cutting edges facing outwards.

[0006] Furthermore, convex strips are axially provided at the top and bottom of the blade slot; sliding grooves are axially provided at the top and bottom of the blade body; and the blade body is accommodated in the blade slot through the sliding groove and the convex strips in a sliding fit.

[0007] Furthermore, the left-hand blade and the right-hand blade are relatively staggered, and the staggered size is 1.5 mm.

[0008] Furthermore, the width of the blade body mounting surface is widened to 6.75 mm.

[0009] Furthermore, the blade body width and R angle are customized according to the size requirements of the processed parts.

[0010] Compared with conventional L-shaped groove cutters, the utility model is a special tool for processing blade grooves, which has the following advantages: 1. By shortening the length of the blade body and increasing the width of the blade body, the rigidity of the tool is improved, thereby enhancing the processing stability; 2. By merging the left and right-hand blades together, the grooves on both sides can be processed at one time, which reduces the time for repeated tool installation and tool setting, and improves the turning processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be described below with reference to the accompanying drawings.

[0012] Figure 1 This is a schematic structural diagram of a blade slot special tool of the utility model.

[0013] Figure 2 This is a schematic diagram of the structure of a blade special tool for blade grooves of the utility model.

[0014] Figure 3 This is a schematic diagram of the structure of a blade groove special tool arbor of the utility model.

[0015] Figure 4 It is a schematic diagram of parts processed by a special tool for blade grooves of the utility model.

[0016] In the figure: 1, knife bar; 2, blade; 3, screw; 4, blade slot; 21, blade body; 22, blade edge body; 211, sliding groove; 221, left-hand blade; 222, right-hand blade; 41, convex strip. DETAILED DESCRIPTION

[0017] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The embodiments described are merely a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0018] like Figure 1-3 As shown, the utility model is a special tool for machining blade grooves, comprising a tool arbor 1 and a blade 2. The head of the tool arbor 1 is radially provided with a screw 3 for locking the blade 2. The head of the tool arbor 1 is axially provided with a blade groove 4 for accommodating the blade 2. The blade 2 is fixed integrally by a blade body 21 and a blade cutting edge 22. The top and bottom of the blade groove 4 are axially provided with ridges 41. The top and bottom of the blade body 21 are axially provided with sliding grooves 211. The blade body 21 is accommodated in the blade groove 4 through the sliding grooves 211 and the ridges 41, and is locked and connected to the tool arbor 1 via the screw 3. The blade cutting edge 22 is staggered outward with the cutting surfaces of the left-hand cutting edge 221 and the right-hand cutting edge 222.

[0019] During use, the blade body 21 of the blade 2 extends into the blade slot 4 through the sliding groove 211 and the ridge 41. The ridge 41 and the sliding groove 211 cooperate to provide a guide for the installation of the blade 2, limiting the rotation or swing of the blade 2. The shank 1 and the blade body 21 are fixed by the radial pressure of the screw 3. The width of the blade body 21 is widened to 6.75mm, further shortening the length of the blade body 21. The left-hand edge 221 and the right-hand edge 222 are staggered by 1.5mm relative to each other to avoid gaps in the front and rear grooves of the part. The width and R angle of the blade body 22 are customized according to the required blade slot dimensions.

[0020] In processing Figure 4 The part shown in the figure can complete the processing of the grooves on both sides by setting the left-hand blade 221 and the right-hand blade 222 with the cutting edges facing outward, so that the tool can be clamped in one go, saving tool installation time and tool setting time; by customizing the width and R angle of the blade body 22, the blade groove can be processed in one go, saving processing time; by widening the width of the blade body 21 and shortening the length of the blade body 21, the stability of the tool cutting processing is increased.

[0021] Other aspects of the present invention that are not described in detail are all conventional technologies known to those skilled in the art.

[0022] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements that are inherent to such process, method, article, or apparatus.

[0023] The protection scope of the present invention is not limited to the technical solutions disclosed in the specific implementation methods. Any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A special tool for machining blade grooves, comprising a tool bar (1) and a blade (2); characterized in that: The head of the shank (1) is radially provided with a screw (3) for locking the blade (2); the head of the shank (1) is axially provided with a blade slot (4) for accommodating the blade (2); the blade (2) is fixed integrally by a blade body (21) and a blade edge body (22); the blade body (21) is accommodated in the blade slot (4) and is locked to the shank (1) by the screw (3); the blade edge body (22) is fixed integrally by a left-hand edge (221) and a right-hand edge (222); the left-hand edge (221) and the right-hand edge (222) are arranged with their edge surfaces facing outwards.

2. The blade groove machining tool according to claim 1, characterized in that: The top and bottom of the blade slot (4) are axially provided with convex strips (41); the top and bottom of the blade body (21) are axially provided with sliding grooves (211); the blade body (21) is accommodated in the blade slot (4) by slidingly fitting with the convex strips (41) through the sliding grooves (211).

3. The special tool for machining blade grooves according to claim 1, characterized in that: The left-hand blade (221) and the right-hand blade (222) are relatively staggered, with a staggering size of 1.5 mm.

4. The special tool for machining blade grooves according to claim 1, characterized in that: The mounting surface width of the blade body (21) is widened to 6.75 mm.

5. The special tool for machining blade grooves according to claim 1, characterized in that: The width and R angle of the blade body (22) are customized according to the size requirements of the processed parts.

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