CN221018946U - A metal ceramic reamer - Google Patents

Abstract

The utility model discloses a metal ceramic reamer, comprising: a shank, one end of which is provided with a blade core, and a blade portion is arranged around the outer side of the blade core; the blade portion comprises an entry blade, a cutting blade and a chip removal blade which are arranged in sequence, the entry blade is arranged at an angle to the blade core axis, the cutting blade is spirally arranged along the blade core axis, and the chip removal blade transitionally extends to the shank; on the one hand, a 6-blade unequally divided structure is adopted, the thickness of the blade and the angle of the blade are different, the workpiece obstruction is overcome by increasing the strength of part of the blade, the chip groove is not occupied, the tool vibration is reduced, the cutting amount is reduced by reducing the thickness of part of the blade, the burr is removed, and the surface roughness is reduced; on the other hand, an angled cutting surface is obtained through the entry portion, so that the tool gradually cuts into the workpiece, the feed amount is reduced, the loss of the cutting blade is reduced, a smaller grinding amount is obtained, thereby increasing the number of grinding times and making the reamer life longer.

Description

A metal ceramic reamer

Technical Field

The utility model belongs to the technical field of metal processing tools, in particular to a metal ceramic reamer.

Background technique

A reamer is a tool that uses subtractive processing to give a product a specific shape. It is commonly used on various metal processing machines and is widely used in light and heavy industries.

In the actual production of reamers, the reamers will continue to wear and accumulate cutting tumors, which will cause deformation of the cutting part of the tool, affect processing, and the reamer will not be able to continue working. It needs to be re-grinded frequently, and the reamer itself is also easily damaged and broken. Therefore, due to the customer's requirements for the service life and number of re-grinding of the reamer, the reamer is innovated and improved.

The current reamer has the following main problems:

1. Most of the current reamers have service life issues. Due to wear and deformation of the reamers, they need to be sharpened frequently, which causes the working area of the reamers to become smaller until they cannot be used.

2. Most of the current reamers have problems with machining accuracy. When the reamer is cutting, it is affected by the material distribution inside the workpiece, and the reaction force on the blade is different, resulting in chatter marks and other phenomena, resulting in low precision of the processed holes.

Summary of the invention

Purpose of the invention: In order to overcome the above shortcomings, the purpose of the utility model is to provide a metal ceramic reamer, which, on the one hand, adopts a 6-blade unequal structure with different blade thicknesses and angles, overcomes the obstruction of the workpiece by increasing the strength of part of the blade, does not occupy the chip groove, reduces tool vibration, reduces the cutting amount by reducing the thickness of part of the blade, removes burrs, and reduces surface roughness. On the other hand, an angled cutting surface is obtained through the cutting portion, so that the tool gradually cuts into the workpiece, reduces the feed amount, reduces the loss of the cutting edge, obtains a smaller grinding amount, thereby increasing the number of grinding times and extending the life of the reamer.

Technical solution: In order to achieve the above purpose, the utility model provides a metal ceramic reamer, comprising:

A handle, one end of which is provided with a blade core, and a blade portion is arranged around the outer side of the blade core;

The blade portion includes a cutting edge, a cutting edge and a chip removal edge. The cutting edge is provided at the top of the blade core. The cutting edge is arranged at an angle to the axis of the blade core. The cutting edge is connected to the cutting edge. The cutting edge is spirally arranged along the axis of the blade core. The cutting edge is connected to the chip removal edge. The chip removal edge transitions and extends to the shank.

The arrangement of the reamer in the utility model obtains an angled cutting surface through the cutting portion, so that the tool gradually cuts into the workpiece, reduces the feed amount, reduces the wear of the cutting edge, obtains a smaller grinding amount, thereby increasing the number of grinding times and extending the life of the reamer.

The cutting blade described in the utility model includes a first blade group and a second blade group connected end to end, the first blade group includes a first blade portion, a second blade portion and a third blade portion arranged in a circular array along the blade core, the structure of the second blade group is the same as that of the first blade group, the size of the first blade portion is smaller than the size of the second blade portion, and the size of the second blade portion is smaller than the size of the third blade portion.

The first blade group described in the utility model also includes a first blade angle, a second blade angle and a third blade angle. The first blade angle is set between the first blade portion and the second blade portion, the second blade angle is set between the second blade portion and the third blade portion, and the third blade angle is set between the third blade portion and the first blade portion in the second blade group. The first blade angle is smaller than the second blade angle, and the second blade angle is smaller than the third blade angle.

The second blade group described in the utility model also includes a fourth blade angle, a fifth blade angle and a sixth blade angle. The fourth blade angle is arranged relative to the first blade angle, and the fourth blade angle is smaller than the first blade angle. The fifth blade angle is arranged relative to the second blade angle, and the fifth blade angle is the same as the second blade angle. The sixth blade angle is arranged relative to the third blade angle, and the sixth blade angle is larger than the third blade angle.

The cutting edge arrangement of the utility model adopts a 6-edge unequally divided structure with different blade thicknesses and angles. The strength of some blades is increased to overcome the obstruction of the workpiece, the chip groove is not occupied, the tool vibration is reduced, and the cutting amount is reduced by reducing the thickness of some blades, burrs are removed, and the surface roughness is reduced.

The first blade angle described in the utility model is preferably 59°, the second blade angle is preferably 60°, the third blade angle is preferably 61°, the fourth blade angle is preferably 53°, the fifth blade angle is preferably 60°, and the sixth blade angle is preferably 67°.

The cutting edge rake angle of the cutting portion described in the utility model is 2°.

The cutting edge rake angle of the cutting part of the utility model adopts a smaller angle, which reduces cutting resistance and improves processing efficiency.

The cutting edge of the cutting part of the utility model is polished.

The arrangement of the cutting edge of the cutting part in the utility model reduces burrs on the surface of the tool and improves processing accuracy.

The cutting blade of the utility model comprises a cutting blade surface, and the cutting blade surface forms an angle of 60°-65° with the blade core axis.

The arrangement of the cutting edge of the cutting portion in the utility model is beneficial to reducing the grinding amount and extending the number of grinding times, thereby extending the overall life of the tool.

The cutting edge surface described in the utility model has an axial depth of 0.35mm-0.8mm along the blade core.

The cutting edge surface described in the utility model is provided with a first back angle surface and a second back angle surface arranged in sequence on one side, the first back angle surface and the second back angle surface are arranged at an angle, and there is an angle of 11°-16° between the first back angle surface and the cutting edge surface.

The rear angle surface of the utility model adopts two rear angle surfaces with angles between each other, so that the cutting speed of the rear section is accelerated, and the feed speed is increased without accelerating the wear of the tool.

The radial dimension of the blade away from the handle end of the utility model is greater than the radial dimension of the blade close to the handle end, and the reverse taper of the blade diameter is 0.01/100-0.03/100.

The blade portion of the utility model adopts an inverted cone structure, because the processed hole will shrink when being processed by a practical alloy tool, so the shrinkage of the processed hole can avoid affecting the smoothness of the tool or even getting stuck, thereby improving the processing efficiency and protecting the tool.

The blade part described in the utility model is made of metal ceramic material.

The arrangement of the blade portion in the utility model improves the strength of the tool and reduces wear.

It can be seen from the above technical solution that the utility model has the following beneficial effects:

1. The metal ceramic reamer described in the utility model obtains an angled cutting surface through the cutting portion, so that the tool gradually cuts into the workpiece, reduces the feed amount, reduces the loss of the cutting edge, obtains a smaller grinding amount, thereby increasing the number of grinding times and extending the life of the reamer.

2. The metal ceramic reamer described in the utility model adopts a 6-blade unequal structure with blades of different thicknesses and angles. It overcomes the obstruction of the workpiece by increasing the strength of part of the blade, does not occupy the chip groove, reduces tool vibration, reduces the cutting amount by reducing the thickness of part of the blade, removes burrs, and reduces surface roughness.

3. The metal ceramic reamer described in the utility model adopts an inverted cone structure to prevent the shrinkage of the processed hole during processing from affecting the smoothness of the tool or even getting stuck, thereby improving processing efficiency and protecting the tool.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of the utility model;

FIG2 is a schematic structural diagram of the end surface of the blade of the utility model;

FIG3 is a schematic diagram of the structure of the cutting edge of the utility model;

FIG4 is a schematic diagram of a structure of the end surface of the blade of the utility model;

In the figure: shank 1, blade core 2, blade 3, cutting edge 31, first back angle surface 311, second back angle surface 312, cutting edge 32, first blade 321, second blade 322, third blade 323, first inter-blade angle 324, second inter-blade angle 325, third inter-blade angle 326, fourth blade angle 327, fifth blade angle 328, sixth blade angle 329, chip removal blade 33.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

Example 1

A metal ceramic reamer as shown in FIG1-4 includes:

A handle 1, one end of which is provided with a blade core 2, and a blade 3 is arranged around the outer side of the blade core 2;

The blade portion 3 includes a cutting edge 31, a cutting edge 32 and a chip removal edge 33. The cutting edge 31 is provided at the top of the blade core 2. The cutting edge 31 is arranged at an angle to the axis of the blade core 2. The cutting edge 31 is connected to the cutting edge 32. The cutting edge 32 is spirally arranged along the axis of the blade core 2. The cutting edge 32 is connected to the chip removal edge 33. The chip removal edge 33 transitionally extends to the shank 1.

The cutting edge 32 described in this embodiment includes a first blade group and a second blade group connected end to end, the first blade group includes a first blade portion 321, a second blade portion 322 and a third blade portion 323 arranged in a circular array along the blade core 2, the second blade group structure is the same as the first blade group structure, the first blade portion 321 is smaller than the second blade portion 322, and the second blade portion 322 is smaller than the third blade portion 323.

The first blade group described in this embodiment also includes a first blade angle 324, a second blade angle 325 and a third blade angle 326. The first blade angle 324 is arranged between the first blade portion 321 and the second blade portion 322, the second blade angle 325 is arranged between the second blade portion 322 and the third blade portion 323, and the third blade angle 326 is arranged between the third blade portion 323 and the first blade portion 321 in the second blade group. The first blade angle 324 is smaller than the second blade angle 325, and the second blade angle 325 is smaller than the third blade angle 326.

The second blade group described in this embodiment also includes a fourth blade angle 327, a fifth blade angle 328 and a sixth blade angle 329. The fourth blade angle 327 is arranged opposite to the first blade angle 324, and the angle of the fourth blade angle 327 is smaller than the angle of the first blade angle 324. The fifth blade angle 328 is arranged opposite to the second blade angle 325, and the angle of the fifth blade angle 328 is the same as the angle of the second blade angle 325. The sixth blade angle 329 is arranged opposite to the third blade angle 326, and the angle of the sixth blade angle 329 is larger than the angle of the third blade angle 326.

The front angle of the cutting edge 32 of the cutting portion described in this embodiment is 2°.

The cutting edge 32 described in this embodiment is polished.

The cutting edge described in this embodiment includes a cutting edge face, and the cutting edge face forms an angle of 60°-65° with the axis of the blade core 2.

The cutting edge surface described in this embodiment has an axial depth of 0.35 mm to 0.8 mm along the cutting core 2 .

The cutting edge surface described in this embodiment is provided with a first rear angle surface 311 and a second rear angle surface 312 arranged in sequence on one side, the first rear angle surface 311 and the second rear angle surface 312 are arranged at an angle, and there is an angle of 11°-16° between the first rear angle surface 311 and the cutting edge surface.

In this embodiment, the radial dimension of the blade 3 at the end away from the shank 1 is greater than the radial dimension of the blade 3 at the end close to the shank 1, and the reverse taper of the blade diameter of the blade 3 is 0.01/100-0.03/100.

Example 2

A metal ceramic reamer as shown in FIG1 , comprising:

A handle 1, one end of which is provided with a blade core 2, and a blade 3 is arranged around the outer side of the blade core 2;

The blade portion 3 includes a cutting edge 31, a cutting edge 32 and a chip removal edge 33. The cutting edge 31 is provided at the top of the blade core 2. The cutting edge 31 is arranged at an angle to the axis of the blade core 2. The cutting edge 31 is connected to the cutting edge 32. The cutting edge 32 is spirally arranged along the axis of the blade core 2. The cutting edge 32 is connected to the chip removal edge 33. The chip removal edge 33 transitionally extends to the shank 1.

The blade part described in the utility model is made of metal ceramic material.

Example 3

A metal ceramic reamer as shown in FIGS. 1 and 4 comprises:

A handle 1, one end of which is provided with a blade core 2, and a blade 3 is arranged around the outer side of the blade core 2;

The blade portion 3 includes a cutting edge 31, a cutting edge 32 and a chip removal edge 33. The cutting edge 31 is provided at the top of the blade core 2. The cutting edge 31 is arranged at an angle to the axis of the blade core 2. The cutting edge 31 is connected to the cutting edge 32. The cutting edge 32 is spirally arranged along the axis of the blade core 2. The cutting edge 32 is connected to the chip removal edge 33. The chip removal edge 33 transitionally extends to the shank 1.

The cutting edge 32 described in this embodiment includes a first blade group and a second blade group connected end to end, the first blade group includes a first blade portion 321, a second blade portion 322 and a third blade portion 323 arranged in a circular array along the blade core 2, the second blade group structure is the same as the first blade group structure, the first blade portion 321 is smaller than the second blade portion 322, and the second blade portion 322 is smaller than the third blade portion 323.

The first blade group described in this embodiment also includes a first blade angle 324, a second blade angle 325 and a third blade angle 326. The first blade angle 324 is arranged between the first blade portion 321 and the second blade portion 322, the second blade angle 325 is arranged between the second blade portion 322 and the third blade portion 323, and the third blade angle 326 is arranged between the third blade portion 323 and the first blade portion 321 in the second blade group. The first blade angle 324 is smaller than the second blade angle 325, and the second blade angle 325 is smaller than the third blade angle 326.

The second blade group described in this embodiment also includes a fourth blade angle 327, a fifth blade angle 328 and a sixth blade angle 329. The fourth blade angle 327 is arranged opposite to the first blade angle 324, and the angle of the fourth blade angle 327 is smaller than the angle of the first blade angle 324. The fifth blade angle 328 is arranged opposite to the second blade angle 325, and the angle of the fifth blade angle 328 is the same as the angle of the second blade angle 325. The sixth blade angle 329 is arranged opposite to the third blade angle 326, and the angle of the sixth blade angle 329 is larger than the angle of the third blade angle 326.

The front angle of the cutting edge 32 of the cutting portion described in this embodiment is 2°.

The first blade angle described in the utility model is preferably 59°, the second blade angle is preferably 60°, the third blade angle is preferably 61°, the fourth blade angle is preferably 53°, the fifth blade angle is preferably 60°, and the sixth blade angle is preferably 67°.

The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims (9)

1. A metal ceramic reamer, characterized in that it comprises: A handle (1) having a blade core (2) disposed at one end thereof, and a blade portion (3) disposed around the outer side of the blade core (2); The blade portion (3) comprises a cutting blade (31), a cutting blade (32) and a chip removal blade (33); the cutting blade (31) is arranged at the top of the blade core (2); the cutting blade (31) is arranged at an angle to the axis of the blade core (2); the cutting blade (31) is connected to the cutting blade (32); the cutting blade (32) is arranged spirally along the axis of the blade core (2); the cutting blade (32) is connected to the chip removal blade (33); the chip removal blade (33) transitionally extends to The handle (1) comprises a first blade group and a second blade group connected end to end, the first blade group comprises a first blade portion (321), a second blade portion (322) and a third blade portion (323) arranged in a circular array along the blade core (2), the structure of the second blade group is the same as that of the first blade group, the size of the first blade portion (321) is smaller than the size of the second blade portion (322), and the size of the second blade portion (322) is smaller than the size of the third blade portion (323). 2. A metal ceramic reamer according to claim 1, characterized in that: the first blade group further includes a first blade angle (324), a second blade angle (325) and a third blade angle (326), the first blade angle (324) is arranged between the first blade portion (321) and the second blade portion (322), the second blade angle (325) is arranged between the second blade portion (322) and the third blade portion (323), the third blade angle (326) is arranged between the third blade portion (323) and the first blade portion (321) in the second blade group, the first blade angle (324) is smaller than the second blade angle (325), and the second blade angle (325) is smaller than the third blade angle (326). 3. A metal ceramic reamer according to claim 2, characterized in that: the second blade group further includes a fourth blade angle (327), a fifth blade angle (328) and a sixth blade angle (329), the fourth blade angle (327) is arranged relative to the first blade angle (324), the fourth blade angle (327) is smaller than the first blade angle (324), the fifth blade angle (328) is arranged relative to the second blade angle (325), the fifth blade angle (328) is the same as the second blade angle (325), the sixth blade angle (329) is arranged relative to the third blade angle (326), the sixth blade angle (329) is larger than the third blade angle (326). 4. A metal ceramic reamer according to claim 1, characterized in that the front angle of the cutting edge (32) is 2°. 5. The metal ceramic reamer according to claim 1, characterized in that the cutting edge (32) is polished. 6. A metal ceramic reamer according to claim 1, characterized in that: the cutting edge (31) comprises a cutting edge face, and the cutting edge face forms an angle of 60°-65° with the axis of the cutting core (2). 7. A metal ceramic reamer according to claim 6, characterized in that the cutting edge (31) has an axial depth of 0.35 mm to 0.8 mm along the cutting edge core (2). 8. A metal ceramic reamer according to claim 7, characterized in that: a first back angle surface (311) and a second back angle surface (312) arranged in sequence are provided on one side of the cutting edge surface, the first back angle surface (311) and the second back angle surface (312) are arranged at an angle, and an angle of 11°-16° is formed between the first back angle surface (311) and the cutting edge surface. 9. A metal ceramic reamer according to claim 1, characterized in that the radial dimension of the end of the blade (3) away from the handle (1) is larger than the radial dimension of the end of the blade (3) close to the handle (1), and the blade diameter of the blade (3) has a reverse taper of 0.01/100-0.03/100.