Large-cutting-depth cutter with three-dimensional chip breaker grooves

Abstract

The utility model relates to the technical field of indexable blades, and provides a large-cutting-depth cutter with a three-dimensional chip breaker groove, which comprises a cutter bar and a blade, a fixing groove is arranged on one side of the front end of the cutter bar, the blade is arranged in the fixing groove, and limiting edges are arranged on the right side of the top and the left side of the bottom of the blade. Three-dimensional chip breaker grooves are formed in the left side of the top of the blade and the right side of the bottom of the blade, a plurality of V-shaped positioning grooves are formed in the back of the blade, a plurality of V-shaped butt joint blocks are arranged on the inner wall of the fixing groove, and an inclined face is arranged at the corner of the top end of the interior of the fixing groove. The cutting resistance of the blade in the vertical direction can be effectively counteracted through clamping type butt joint, and it is guaranteed that the blade is stable in the machining process and high in positioning precision; the limiting edge on the right side of the top of the blade is tightly attached to the inclined face in the fixing groove, precise positioning of the blade in the horizontal direction is achieved, and the overall working stability of the cutter is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to indexable insert technical field, especially in a big cutting depth cutter with three -dimensional chip breaker groove. BACKGROUND

[0002] In today's manufacturing industry, the application of numerical control machine tool is extremely wide, which puts forward strict requirement to the performance of the tool, and the tool needs to have the characteristics of reliable machining and wide machining range. The commonly used cutting groove insert has many drawbacks, which seriously restricts the machining efficiency and quality.

[0003] The commonly seen cutting groove insert on the market adopts a V-shaped groove positioning mode, and the positioning precision of the positioning mode is poor, and the locking effect is not ideal. In the actual machining process, the insert is prone to collapse or tool breaking phenomenon, which not only reduces the reliability of machining, but also may cause machining interruption and increase the production cost. At the same time, burrs or flash may appear on the blade edge of the insert pressed by the grinding tool, and increasing the blade edge passivation value solves the problem, but the sharpness of the blade edge is reduced, which is difficult to meet the high-precision machining requirement for fine machining.

[0004] In addition, other shape cutting groove inserts such as triangle or rhombus have a limitation of the shape of the insert, and the cutting depth is generally shallow, and the applicable machining range is extremely limited. When facing some machining tasks with high cutting depth requirement, these inserts are helpless, and cannot meet the diversified machining requirement of modern manufacturing industry. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a big cutting depth cutter with three -dimensional chip breaker groove, and the device is used for work, so that the above problems are solved.

[0006] In order to solve the above technical problem, the utility model provides the following technical scheme: a big cutting depth cutter with three -dimensional chip breaker groove, including the knife bar and the insert, the one side of the knife bar front end is equipped with the fixed groove, the fixed groove is provided with the insert, the right side of the insert top and the left side of the bottom are provided with the limit edge, the left side of the insert top and the right side of the bottom are equipped with three -dimensional chip breaker groove, the back of the insert is provided with a plurality of V-shaped positioning groove, the inner wall of the fixed groove is provided with a plurality of V-shaped butt joint block, and the corner of the inside top of the fixed groove is provided with an inclined surface.

[0007] Preferably, the limit edge on the right side of the top of the insert is rotationally symmetrical with the limit edge on the left side of the bottom of the insert, and the three -dimensional chip breaker groove on the left side of the top of the insert is rotationally symmetrical with the three -dimensional chip breaker groove on the right side of the bottom of the insert.

[0008] Preferably, the limit edge and the inclined surface are both ° inclined end surfaces, and the limit edge on the right side of the top of the insert is closely attached to the inclined surface.

[0009] Preferably, the size of the V-shaped positioning groove matches the size of the V-shaped butt joint block, and the V-shaped butt joint block can be clamped into the V-shaped positioning groove.

[0010] Preferably, the inside of the blade is provided with a screw hole, and a locking screw is arranged in the screw hole, and the locking screw is used for fixing the blade in the fixing groove.

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

[0012] 1. The utility model provides a big cutting depth tool with three -dimensional chip breaking groove, V type positioning groove of blade back portion and V type butt joint block of fixed groove inner wall size match, and the clamping type butt joint can effectively offset the cutting resistance in the vertical direction of the blade, ensures that the blade is stable in the processing, and the positioning precision is high.

[0013] 2. The utility model provides a big cutting depth tool with three -dimensional chip breaking groove, and the limiting edge of the right side of the blade top is closely attached to the inclined plane in the fixed groove, realizes accurate positioning to the blade horizontal direction, and guarantees the stability of the whole tool work.

[0014] 3. The utility model provides a big cutting depth tool with three -dimensional chip breaking groove, after completing positioning, with V positioning surface as reference datum, the cutting edge is precisely ground, the edge precision and position precision are improved, the tool can retain the chip breaking effect of three -dimensional chip breaking groove, the edge quality reaches the standard suitable for fine machining, and the problems of unstable edge quality of conventional three -dimensional chip breaking groove blade and unsuitable fine machining are solved.

[0015] 4. The utility model provides a big cutting depth tool with three -dimensional chip breaking groove, and the three -dimensional chip breaking groove on the blade can ensure that the iron filings are fully deformed into small short sections during the forming process, convenient to discharge, avoid the iron filings winding and tool breaking, and improve the processing safety and efficiency.

[0016] 5. The utility model provides a big cutting depth tool with three -dimensional chip breaking groove, because the blade positioning is reliable, the tool can stably process under the working condition of large cutting depth, the maximum cutting depth can reach 10mm, can also realize groove cutting, cutting and external circle processing, and is suitable for a wide range of applications. DRAWINGS

[0017] Figure 1 It is the whole structure schematic diagram of the utility model;

[0018] Figure 2 It is the front view structure schematic diagram of the utility model;

[0019] Figure 3 It is the overhead structure schematic diagram of the utility model;

[0020] Figure 4 It is the side view structure schematic diagram of the utility model;

[0021] Figure 5 It is the overall structure schematic view of the blade of the utility model;

[0022] Figure 6 It is the front view structure schematic view of the blade of the utility model;

[0023] Figure 7 It is the rear view structure schematic view of the blade of the utility model;

[0024] Figure 8 It is the side view structure schematic view of the blade of the utility model;

[0025] Figure 9 It is the top view structure schematic view of the blade of the utility model.

[0026] The reference signs in the drawing are explained: 1, cutter bar; 2, fixed groove; 21, inclined surface; 22, V-shaped butt joint block; 3, blade; 31, screw hole; 32, locking screw; 33, three-dimensional chip breaking groove; 34, limiting edge; 35, V-shaped positioning groove. DETAILED DESCRIPTION

[0027] 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, not 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.

[0028] In order to further understand the content of the utility model, the utility model will be described in detail in combination with the drawings.

[0029] In combination with Figures 1 to 9 The utility model discloses a big cutting depth tool with three-dimensional chip breaking groove, including cutter bar 1 and blade 3, the side of the front end of cutter bar 1 is provided with fixed groove 2, the blade 3 is arranged in fixed groove 2, the right side of the top of blade 3 and the left side of the bottom are provided with limiting edge 34, the left side of the top of blade 3 and the right side of the bottom are provided with three-dimensional chip breaking groove 33, the back of blade 3 is provided with multiple V-shaped positioning groove 35, the inner wall of fixed groove 2 is provided with multiple V-shaped butt joint block 22, the corner at the top inside of fixed groove 2 is provided with inclined surface 21.

[0030] The limiting edge 34 of the right side of the top of blade 3 is rotationally symmetrical with the limiting edge 34 of the left side of the bottom of blade 3, and the three-dimensional chip breaking groove 33 of the left side of the top of blade 3 is rotationally symmetrical with the three-dimensional chip breaking groove 33 of the right side of the bottom of blade 3.

[0031] The limiting edge 34 and the inclined surface 21 are both 45° inclined end surfaces, and the limiting edge 34 of the right side of the top of blade 3 is closely attached to the inclined surface 21.

[0032] The size of the V-shaped positioning groove 35 matches the size of the V-shaped abutting block 22, and the V-shaped abutting block 22 can be clamped into the V-shaped positioning groove 35.

[0033] The inside of the blade 3 is provided with a screw hole 31, and a locking screw 32 is arranged in the screw hole 31, which is used to fix the blade 3 in the fixed groove 2.

[0034] Specifically, the blade 3 blank is manufactured by adopting a powder metallurgy lateral three-dimensional groove forming device. A plurality of V-shaped positioning grooves 35 correspond to and abut against the V-shaped abutting blocks 22 in the fixed groove 2, the V-shaped positioning groove 35 has high positioning precision in cooperation with the V-shaped abutting block 22, and can effectively offset the cutting resistance of the blade 3 in the vertical direction.

[0035] The blade 3 is locked in the fixed groove 2 of the tool bar 1 through the screw hole 31 and the locking screw 32. The limiting edge 34 on the top right side of the blade 3 is tightly combined with the inclined surface 21 in the fixed groove 2, so as to position the blade 3 in the horizontal direction.

[0036] After positioning, the cutting edge surface directly participating in cutting work is finely ground with the V-shaped positioning surface as a reference datum. The fine grinding of the cutting edge surface can improve the edge precision and position precision, so that the cutting tool can retain the chip breaking effect of the three-dimensional chip breaking groove 33, and the edge quality meets the standard suitable for fine machining. The problem that the edge quality of the conventional blade 3 with the three-dimensional chip breaking groove 33 is unstable and is not suitable for fine machining is avoided.

[0037] The three-dimensional chip breaking groove 33 on the blade 3 ensures that the iron filings are fully deformed in the forming process and become small short sections, which are convenient to discharge and will not cause tool breakage due to iron filings winding. Since the blade 3 is reliably positioned, it can be stably machined under the working condition of large cutting depth, the maximum cutting depth can reach 10mm, and slot cutting, cutting and external circle machining can be realized.

[0038] It should be noted that the relational terms herein such as first and second and the like are used only to differentiate one entity or action from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or actions. In addition, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device.

[0039] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A heavy depth of cut cutter with three dimensional chip breaker flutes comprising a shank (1) and an insert (3) characterised in that: The fixed groove (2) is provided with the blade (3), the right side of the top of the blade (3) and the left side of the bottom are provided with the limiting edge (34), the left side of the top of the blade (3) and the right side of the bottom are provided with the three-dimensional chip breaking groove (33), the back of the blade (3) is provided with a plurality of V-shaped positioning grooves (35), the inner wall of the fixed groove (2) is provided with a plurality of V-shaped butt blocks (22), and the corner at the top of the fixed groove (2) is provided with an inclined surface (21).

2. A heavy depth of cut cutter with three-dimensional chip breakers according to claim 1, characterized in that: The limiting edge (34) on the right side of the top of the blade (3) is rotationally symmetrical with the limiting edge (34) on the left side of the bottom of the blade (3), and the three-dimensional chip breaking groove (33) on the left side of the top of the blade (3) is rotationally symmetrical with the three-dimensional chip breaking groove (33) on the right side of the bottom of the blade (3).

3. A heavy depth of cut cutter with three-dimensional chip breakers according to claim 2, characterized in that: The limiting edge (34) and the inclined surface (21) are both 45° inclined end surfaces, and the limiting edge (34) on the right side of the top of the blade (3) is closely attached to the inclined surface (21).

4. A heavy depth of cut cutter with three dimensional chip breakers as claimed in claim 3 wherein: The size of the V-shaped positioning groove (35) matches the size of the V-shaped butt block (22), and the V-shaped butt block (22) can be clamped into the V-shaped positioning groove (35).

5. A heavy depth cutter with three-dimensional chip breaker groove according to claim 1, characterized in that: The inside of the blade (3) is provided with a screw hole (31), the screw hole (31) is provided with a locking screw (32), and the locking screw (32) is used for fixing the blade (3) in the fixed groove (2).

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