High-stability straight groove stepped reamer

Abstract

The utility model provides a high-stability straight fluted stepped reamer which comprises a reamer body, the reamer body is composed of a front-section cutting edge and a rear-section reamer handle, the cutting edge comprises a plurality of circumferential cutting edges and end cutting edges, and the circumferential cutting edges comprise a first circumferential cutting edge and a second circumferential cutting edge. The first circumferential blade is connected with the end blade, and the end blade, the first circumferential blade and the second circumferential blade are sequentially arranged. The end edges are arranged at the end, away from the cutter handle, of the cutter body, and the end edges are arranged in a staggered tooth mode. The cutter body is provided with a cold water hole which is arranged along the axis of the cutter body. The first circumferential blade and the second circumferential blade are used for reaming a stepped hole at the same time, the end blade is used for machining the bottom face of the stepped hole, cooling liquid is directly fed into a machining area through the cold water hole, the cooling liquid flows outwards from the bottom of the stepped hole, cuttings are helped to be removed, machining heat of a cutting area is taken away, and built-up edges are prevented from occurring on a cutting edge. The end edges are arranged in a staggered mode, cutting force is effectively dispersed, resonance is avoided, better surface smoothness is obtained, and machining quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to a reamer, in particular to a high-stability straight groove step reamer. Background Art

[0002] At present, the processing of stepped blind holes usually requires the processing of the upper and lower stepped holes separately, and the chamfering of the stepped parts requires additional tools for processing, which has low processing efficiency. Especially in blind hole processing, chip removal is difficult and chip accumulation is prone to occur. The coolant cannot be delivered to the cutting part, resulting in heat accumulation, affecting the processing accuracy and further limiting the processing efficiency. In addition, during the processing, the temperature of the cutting area is too high, causing the material to soften and adhere, and it is easy to cause built-up edge, scratch the inner hole wall, and affect the processing quality. For inner holes with large cutting volume, resonance is easy to occur during the processing, and vibration marks appear, which cannot meet the requirements of high-precision and high-quality inner hole processing.

[0003] Therefore, the above problems need to be solved urgently. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the above-mentioned shortcomings, the utility model provides a highly stable straight groove step reamer, which can form the step blind hole in one processing, adopts internal cooling water outlet, and sprays the coolant directly into the cutting area to help remove chips, take away the heat in the cutting area, prevent heat accumulation, avoid the appearance of built-up edge on the cutting edge, and set the end blade to a staggered tooth form to avoid resonance.

[0005] Technical solution: In order to achieve the above-mentioned purpose, the utility model provides a highly stable straight groove step reamer, including a tool body, the tool body is composed of a front blade and a rear handle, the blade includes a plurality of peripheral blades and end blades, and the peripheral blades include a first peripheral blade and a second peripheral blade. The first peripheral blade is connected to the end blade, and the end blade, the first peripheral blade, and the second peripheral blade are arranged in sequence. A chip removal groove is arranged between adjacent peripheral blades, and the end blade is arranged at the end of the tool body away from the tool handle, and the end blade is arranged according to staggered teeth. The tool body is provided with a cold water hole, and the cold water hole is arranged along the axis of the tool body. During the use of the utility model, the blade is extended into the step blind hole to be processed, the first peripheral blade and the second peripheral blade are respectively reaming the step hole, and the end blade is processing the bottom surface of the step hole. The coolant is directly sent into the processing area through the cold water hole and flows out from the end blade. Since the step hole is a blind hole, the coolant flows out from the bottom of the step hole to help remove chips, take away the processing heat in the cutting area, prevent heat accumulation, and avoid the appearance of built-up edge on the cutting edge. In addition, the end cutting edges are set according to the staggered teeth, and the adjacent tooth angles are set at different levels, which can effectively disperse the cutting force, avoid resonance, avoid vibration marks, obtain better surface finish, and ensure processing quality.

[0006] Furthermore, in the above-mentioned high-stability straight groove step reamer, the side wall of the cutter body is provided with a side water outlet hole, and the side water outlet hole is connected to the cold water hole. There are one or more side water outlet holes. The side water outlet hole design allows the coolant to directly reach the cutting area, taking away chips and heat, improving the cooling effect, and reducing friction during the processing.

[0007] Furthermore, in the above-mentioned high-stability straight groove step reamer, the diameter of the first peripheral blade is smaller than the diameter of the second peripheral blade. The end blade and the first peripheral blade are connected by the first forming blade, and the first peripheral blade and the second peripheral blade are connected by the second forming blade. The first forming blade and the second forming blade can perform forming processing on the corner of the stepped hole, reduce the number of processing times, and improve processing efficiency.

[0008] Furthermore, in the above-mentioned high-stability straight groove step reamer, four peripheral blades are provided, and the peripheral blades are straight blades.

[0009] Furthermore, in the above-mentioned high-stability straight groove step reamer, the end blades include a first end blade, a second end blade, a third end blade, and a fourth end blade. The first end blade and the second end blade form a first angle, the second end blade and the third end blade form a second angle, the third end blade and the fourth end blade form a third angle, and the fourth end blade and the first end blade form a fourth angle. The first angle is the same as the third angle, the second angle is the same as the fourth angle, and the first angle and the second angle are different. The angles formed by adjacent end blades are different, which disperses the cutting force and avoids resonance, so that better surface finish can be obtained and processing quality is guaranteed.

[0010] Furthermore, in the above-mentioned high-stability straight groove step reamer, the first angle and the third angle are 88 degrees, and the second angle and the fourth angle are 92 degrees.

[0011] Furthermore, in the above-mentioned high-stability straight groove step reamer, in order to form the step hole in one step, the cross section of the first forming blade is an arc shape, and the cross section of the first forming blade is an oblique line.

[0012] Furthermore, in the above-mentioned high-stability straight groove stepped reamer, in order to facilitate chip removal and to process the bottom surface of the stepped hole for easy chip removal, the end cutting edge is higher than the end surface of the cutter body.

[0013] Furthermore, in the above-mentioned high-stability straight groove step reamer, the end blade is a flat blade, and the end blade is perpendicular to the axis of the cutter body.

[0014] Furthermore, in the above-mentioned high-stability straight-groove step reamer, in order to improve chip removal efficiency, the chip removal groove is a straight groove.

[0015] It can be seen from the above technical scheme that the utility model has the following beneficial effects: the utility model high stability straight groove step reamer can complete the step hole forming process in one time, reduce the number of tool changes, and improve the processing efficiency. In order to ensure the processing quality, the tool body is provided with a cold water hole and a side water outlet hole, which greatly reduces the temperature of the cutting area and avoids the generation of built-up edge. The end blade is set according to the staggered teeth to avoid resonance and vibration marks, so as to obtain a better surface finish and ensure the processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of a highly stable straight groove step reamer of the utility model;

[0017] Figure 2 for Figure 1 A partial enlarged view of

[0018] Figure 3 for Figure 1 Left view of .

[0019] In the figure: 1. tool body, 2. blade, 21. peripheral blade, 211. first peripheral blade, 212. second peripheral blade, 213. first forming blade, 214. through second forming blade, 22. end blade, 221. first end blade, 222. second end blade, 223. third end blade, 224. fourth end blade, 225. first angle, 226. second angle, 227. third angle, 228. fourth angle, 3. tool handle, 4. chip groove, 5. cold water hole, 6. side water outlet hole. DETAILED DESCRIPTION

[0020] Example 1

[0021] like Figure 1-2A high-stability straight groove step reamer shown in the figure comprises a tool body 1, which is composed of a front blade 2 and a rear handle 3. The blade 2 comprises a plurality of peripheral blades 21 and an end blade 22. The peripheral blades 21 are provided with four, and the peripheral blades 21 are straight blades. The peripheral blades 21 comprise a first peripheral blade 211 and a second peripheral blade 212. The first peripheral blade 211 is connected to the end blade 22, and the end blade 22, the first peripheral blade 211, and the second peripheral blade 212 are arranged in sequence. The diameter of the first peripheral blade 211 is smaller than the diameter of the second peripheral blade 212. The end blade 22 and the first peripheral blade 211 are connected by a first profile blade 213, and the first peripheral blade 211 and the second peripheral blade 212 are connected by a second profile blade 214. The cross section of the first profile blade 213 is an arc shape, and the cross section of the second profile blade 214 is an oblique line. A chip removal groove 4 is provided between adjacent peripheral blades 21, and the chip removal groove (4) is a straight groove. The end blade 22 is arranged at the end of the blade body 1 away from the blade handle 3, and the end blade 22 is arranged according to the staggered teeth. The end blade 22 is higher than the end surface of the blade body 1. The end blade (22) is a flat blade, and the end blade 22 is perpendicular to the axis of the blade body 1. The blade body 1 is provided with a cold water hole 5, and the cold water hole 5 is arranged along the axis of the blade body 1. The side wall of the blade body 1 is provided with a side water outlet hole 6, and the side water outlet hole 6 is connected to the cold water hole 5. There are two or more side water outlet holes 6.

[0022] like Figure 3 The high stability straight groove step reamer shown, the end blade 22 includes a first end blade 221, a second end blade 222, a third end blade 223, and a fourth end blade 224. The first end blade 221 and the second end blade 222 form a first angle 225, the second end blade 222 and the third end blade 223 form a second angle 226, the third end blade 223 and the fourth end blade 224 form a third angle 227, and the fourth end blade 224 and the first end blade 221 form a fourth angle 228. The first angle 225 is the same as the third angle 227, the second angle 226 is the same as the fourth angle 228, and the first angle 225 and the second angle 226 are different. The first angle 225 and the third angle 227 are 88 degrees, and the second angle 226 and the fourth angle 228 are 92 degrees.

[0023] The above embodiments are exemplary, and their purpose is to illustrate the technical concept and features of the utility model so that people familiar with this field can understand the content of the utility model and implement it accordingly, and they cannot limit the protection scope of the utility model in turn. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A highly stable straight groove step reamer, characterized by: The invention comprises a tool body (1), wherein the tool body (1) is composed of a front blade (2) and a rear blade handle (3), wherein the blade (2) comprises a plurality of peripheral blades (21) and end blades (22), wherein the peripheral blades (21) comprise a first peripheral blade (211) and a second peripheral blade (212); the first peripheral blade (211) and the end blade (22) are connected, and the end blades (22), the first peripheral blade (211), and the second peripheral blade (212) are arranged in sequence; a chip removal groove (4) is arranged between adjacent peripheral blades (21), the end blades (22) are arranged at an end of the tool body (1) away from the blade handle (3), and the end blades (22) are arranged in a staggered tooth pattern; and the tool body (1) is provided with a cooling water hole (5), and the cooling water hole (5) is arranged along the axis of the tool body (1).

2. The high stability straight groove step reamer according to claim 1, characterized in that: The side wall of the blade body (1) is provided with a side water outlet hole (6), and the side water outlet hole (6) is connected to the cold water hole (5).

3. The high stability straight groove step reamer according to claim 1, characterized in that: The diameter of the first peripheral blade (211) is smaller than the diameter of the second peripheral blade (212); the end blade (22) and the first peripheral blade (211) are connected via a first molding blade (213); and the first peripheral blade (211) and the second peripheral blade (212) are connected via a second molding blade (214).

4. The high stability straight groove step reamer according to claim 1, characterized in that: Four peripheral blades (21) are provided, and the peripheral blades (21) are straight blades.

5. The high stability straight groove step reamer according to claim 1, characterized in that: The end blade (22) comprises a first end blade (221), a second end blade (222), a third end blade (223), and a fourth end blade (224); the first end blade (221) and the second end blade (222) form a first angle (225); the second end blade (222) and the third end blade (223) form a second angle (226); the third end blade (223) and the fourth end blade (224) form a third angle (227); and the fourth end blade (224) and the first end blade (221) form a fourth angle (228); the first angle (225) and the third angle (227) are the same, the second angle (226) and the fourth angle (228) are the same, and the first angle (225) and the second angle (226) are different.

6. The high stability straight groove step reamer according to claim 5, characterized in that: The first included angle (225) and the third included angle (227) are 88 degrees, and the second included angle (226) and the fourth included angle (228) are 92 degrees.

7. The high stability straight groove step reamer according to claim 3, characterized in that: The cross section of the first forming blade (213) is an arc shape, and the cross section of the second forming blade (214) is an oblique line.

8. The high stability straight groove step reamer according to claim 1, characterized in that: The end edge (22) is higher than the end surface of the blade body (1).

9. The high stability straight groove step reamer according to claim 1, characterized in that: The end blade (22) is a flat blade, and the end blade (22) is perpendicular to the axis of the blade body (1).

10. The high stability straight groove step reamer according to claim 1, characterized in that: The chip removal groove (4) is a straight groove.

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