阅读说明：本技术 一种将废旧铰刀改为可调铰刀的方法 (Method for changing waste reamer into adjustable reamer ) 是由 于德庆 赵波 周礼旎 张月 王孙菲 于 2021-09-18 设计创作，主要内容包括：本发明公开了一种将废旧铰刀改为可调铰刀的方法,首先选取一根因直径磨损而报废的铰刀,使用砂轮磨铰刀刃,将废旧铰刀加工所述台阶孔；将废旧铰刀侧面锯出一条加工缝,加工缝与台阶孔连通,加工缝的轴向长度延伸至越过铰刀体上刀片端部位置；领取一段钢料,加工出所述的胀体,将胀体拧入废旧铰刀端部加工的台阶孔中；根据实际需要,通过胀体上的加工槽旋转胀体,调节废旧铰刀直径实际值,将实际值调整至需加工尺寸公差内；使用铰刀加工零件,检验零件上孔径大小,根据孔径大小判断是否需要再次调节铰刀直径实际值。本发明方法可降低铰刀报废率,节省成本；由于该种铰刀直径可调,同时提高了加工的合格率。(The invention discloses a method for changing a waste reamer into an adjustable reamer, which comprises the steps of firstly selecting a reamer which is scrapped due to diameter abrasion, grinding a reaming edge by using a grinding wheel, and processing the waste reamer into a step hole; sawing a processing seam on the side surface of the waste reamer, wherein the processing seam is communicated with the step hole, and the axial length of the processing seam extends to a position over the end part of the upper blade of the reamer body; a section of steel material is taken, the expansion body is processed, and the expansion body is screwed into a step hole processed at the end part of the waste reamer; rotating the expansion body through a processing groove on the expansion body according to actual needs, adjusting the actual value of the diameter of the waste reamer, and adjusting the actual value to be within the tolerance of the size to be processed; and (3) processing the part by using the reamer, checking the aperture size on the part, and judging whether the actual value of the diameter of the reamer needs to be adjusted again according to the aperture size. The method can reduce the rejection rate of the reamer and save the cost; because the diameter of the reamer is adjustable, the processing qualification rate is improved.)

1. A method of converting a used reamer to an adjustable reamer, comprising:

firstly, selecting a reamer which is scrapped due to diameter abrasion, grinding a reamer cutting edge by using a grinding wheel, and machining a stepped hole in the end part of the waste reamer along the axial direction; the first section of the stepped hole is a cylindrical inner hole, the second section of the stepped hole is a conical inner hole with a large front part and a small back part, and the third section of the stepped hole is a threaded hole; sawing a processing seam on the outer wall of the waste reamer along the axial direction, wherein the processing seam is communicated with the step hole, and the axial length of the processing seam extends to a position beyond the end part of the blade on the reamer body; a section of steel material is taken and processed into an expansion body, the expansion body is divided into three sections, the first section of the expansion body is a cylindrical body, the second section of the expansion body is a conical body, the third section of the expansion body is an external thread cylinder, and a processing groove is arranged on the front end face of the expansion body along the radial direction;

screwing the expansion body into a step hole processed at the end part of the waste reamer; rotating the expansion body through a processing groove on the expansion body according to actual needs, adjusting the actual value of the diameter of the waste reamer, and adjusting the actual value to be within the tolerance of the size to be processed; and (3) processing the part by using the reamer, checking the aperture size on the part, and judging whether the actual value of the diameter of the reamer needs to be adjusted again according to the aperture size.

2. The method for changing the waste reamer into the adjustable reamer according to claim 1, wherein the adjusted reamer is used for machining parts again if needed until the size of the machined aperture is qualified, so that the machined adjustable reamer is obtained.

3. The method of changing a used reamer into an adjustable reamer as claimed in claim 1, wherein the diameter of the first section of the stepped bore of the reamer body is greater than the outer diameter of the first section of the expander.

4. The method for changing the waste reamer into the adjustable reamer as claimed in claim 1, wherein the taper of the second section of conical inner hole of the stepped hole of the reamer body is matched with the taper of the second section of conical outer diameter of the expansion body 3.

5. The method for changing the waste reamer into the adjustable reamer as claimed in claim 1, wherein the specification of the third section of the threaded hole of the reamer body stepped hole is matched with the outer diameter of the third section of the thread of the expander, and the axial length of the third section of the threaded hole is greater than that of the third section of the threaded hole on the expander.

6. The method for changing the waste reamer into the adjustable reamer as claimed in claim 1, wherein the end of the first section of the expansion body is provided with a processing groove for screwing or unscrewing during adjustment, thereby changing the size of the outer diameter of the reamer body.

7. The method of changing a used reamer into an adjustable reamer as claimed in claim 1, wherein the total length of the expander is less than the total depth of the stepped hole of the reamer body so that the expander can be completely submerged into the inner hole.

8. The method for changing the waste reamer into the adjustable reamer as claimed in claim 1, wherein the length of the external thread on the expansion body is smaller than the effective depth of the thread of the threaded hole in the stepped hole of the reamer body.

Technical Field

The invention belongs to the field of machining, and particularly relates to a method for changing a waste reamer into an adjustable reamer.

Background

Use reamer processing aperture usually in the machining to guarantee aperture size, long-term the use can lead to the reamer wearing and tearing, when the reamer diameter is less than the deviation under the processing aperture, the reamer need be scrapped, the reamer premium is comparatively frequent, can lead to the cost extravagant like this.

Disclosure of Invention

The invention aims to provide a method for changing a waste reamer into an adjustable reamer, which can enable the scrapped reamer to be reused and prolong the service life.

In order to realize the task, the invention adopts the following technical scheme:

a method of converting a used reamer to an adjustable reamer comprising:

firstly, selecting a reamer which is scrapped due to diameter abrasion, grinding a reamer cutting edge by using a grinding wheel, and machining a stepped hole in the end part of the waste reamer along the axial direction; the first section of the stepped hole is a cylindrical inner hole, the second section of the stepped hole is a conical inner hole with a large front part and a small back part, and the third section of the stepped hole is a threaded hole; sawing a processing seam on the outer wall of the waste reamer along the axial direction, wherein the processing seam is communicated with the step hole, and the axial length of the processing seam extends to a position beyond the end part of the blade on the reamer body; a section of steel material is taken and processed into an expansion body, the expansion body is divided into three sections, the first section of the expansion body is a cylindrical body, the second section of the expansion body is a conical body, the third section of the expansion body is an external thread cylinder, and a processing groove is arranged on the front end face of the expansion body along the radial direction;

screwing the expansion body into a step hole processed at the end part of the waste reamer; rotating the expansion body through a processing groove on the expansion body according to actual needs, adjusting the actual value of the diameter of the waste reamer, and adjusting the actual value to be within the tolerance of the size to be processed; and (3) processing the part by using the reamer, checking the aperture size on the part, and judging whether the actual value of the diameter of the reamer needs to be adjusted again according to the aperture size.

And further, if the adjustment is needed, the parts are machined again by using the adjusted reamer until the machined aperture is qualified, and the machined adjustable reamer is obtained.

Further, the diameter of the first section of the reamer body step hole is larger than the outer diameter of the first section of the expansion body.

Furthermore, the taper of the second section of conical inner hole of the step hole of the reamer body is matched with the taper of the second section of conical outer diameter of the expansion body 3.

Furthermore, the specification of a third section of threaded hole of the reamer body step hole is matched with the outer diameter of a third section of thread of the expansion body, and the axial length of the third section of threaded hole is greater than that of the third section of threaded hole in the expansion body.

Further, a processing groove is formed in the end portion of the first section of the expansion body and used for screwing or loosening during adjustment, and therefore the size of the outer diameter of the reamer body is changed.

Further, the total length of the expansion body is smaller than the total depth of the stepped hole of the reamer body, so that the expansion body can be completely immersed into the inner hole.

Further, the length of the external thread on the expansion body is smaller than the effective depth of the thread of the threaded hole in the stepped hole of the reamer body.

Compared with the prior art, the invention has the following technical characteristics:

the method can reduce the rejection rate of the reamer and save the cost. Because the diameter of the reamer is adjustable, the processing qualification rate is improved.

Drawings

FIG. 1 is a schematic flow diagram of the process of the present invention;

FIG. 2 is a schematic view of the modified reamer;

FIG. 3 is a schematic view of the reamer body;

fig. 4 is a schematic structural view of the expander.

In the figure: 1 reamer body, 2 expansion body.

Detailed Description

Referring to fig. 1 to 4, the present invention provides a method for changing a waste reamer into an adjustable reamer, wherein the adjustable reamer comprises a reamer body 1 and an expansion body 2; a stepped hole is formed in the front end of the reamer body 1 along the axial direction, the first section of the stepped hole is a cylindrical inner hole, the second section of the stepped hole is a conical inner hole with a large front part and a small rear part, and the third section of the stepped hole is a threaded hole; a processing seam is arranged on the outer wall of the reamer body 1 along the axial direction; the expansion body 2 is divided into three sections, wherein the first section of the expansion body 2 is a cylindrical body, the second section of the expansion body is a conical body, and the third section of the expansion body is an external thread cylinder; a processing groove is arranged on the front end surface of the expansion body 1 along the radial direction; the expansion body 1 is assembled in a step hole of the reamer body 1.

The side surface of the reamer body 1 is provided with a processing seam which is communicated with the step hole, and the diameter of the processing seam is increased after the expansion body is screwed into the step hole.

The diameter of the first section of the stepped hole of the reamer body 1 is larger than the outer diameter of the first section of the expansion body 3.

The taper of the second section of conical inner hole of the stepped hole of the reamer body 1 is matched with the taper of the second section of conical outer diameter of the expansion body 3.

The specification of the third section of threaded hole of the stepped hole of the reamer body 1 is matched with the outer diameter of the third section of threaded hole of the expansion body 3, and the axial length of the third section of threaded hole is greater than that of the third section of threaded hole on the expansion body 3.

The processing groove arranged at the end part of the first section of the expansion body 2 is used for screwing or loosening during adjustment, and can be clamped into the adjusting groove through a tool, such as a wrench and the like, so as to rotate, and the expansion body is screwed into or withdrawn from the stepped hole under the matching of the external thread cylinder and the internal thread hole of the stepped hole; in the screwing-in process, the adjusting seam is enlarged due to the matching of the conical inner hole and the conical body, so that the actual outer diameter of the reamer body is changed; in the withdrawing process, the adjusting gap is reduced and the external diameter of the reamer body is reduced due to the elasticity of the reamer body.

The total length of the expansion body 2 is smaller than the total depth of the stepped hole of the reamer body 1, so that the expansion body 2 can be completely immersed into the inner hole, and the expansion body 2 is prevented from being exposed outside to cause interference in the machining process.

The length of the external thread on the expansion body 2 is smaller than the effective depth of the thread of the threaded hole in the stepped hole of the reamer body 1.

The method comprises the following steps:

step 1, firstly, selecting a scrapped reamer due to diameter abrasion.

And 2, grinding the hinged blade by using a grinding wheel to ensure the sharpness of the blade.

And 3, processing the waste reamer into a step hole according to the graph 3.

And 4, sawing a processing seam on the side surface of the waste reamer by using a saw blade, wherein the axial length of the processing seam needs to extend to a position beyond the end part of the blade on the reamer body.

And 5, taking a section of steel material, and processing the expansion body according to the shape of the graph 4.

And 6, screwing the expansion body into a step hole processed at the end part of the waste reamer.

And 7, rotating the expansion body through the processing groove on the expansion body 3 according to actual needs, adjusting the actual value of the diameter of the waste reamer, and adjusting the actual value to be within the tolerance of the size to be processed.

And 8, machining the part by using a reamer.

Step 9, checking the aperture size of the part, and judging whether the actual value of the diameter of the reamer needs to be adjusted again according to the aperture size;

step 10, if the adjustment is needed, machining the part again by using the adjusted reamer;

and 11, checking the aperture size of the part, repeating the steps 10-11 if the aperture size of the part is unqualified, and finishing the operation until the aperture size of the processed part is qualified to obtain the processed adjustable reamer.

Example (b):

step 1, firstly, selecting a scrapped reamer due to diameter abrasion; the original diameter of the reamer is phi 18+0.03mm, the maximum diameter after abrasion is phi 17.98mm, and the length of the cutting edge of the reamer is 19.5 mm;

and 2, grinding the hinged blade by using a grinding wheel to ensure the sharpness of the blade.

Step 3, machining inner holes of the waste reamers according to the schematic diagram of the figure 3; the length of the first section of inner hole phi 9 is 6 mm; the diameter phi 7 of the small end of the inner hole of the second section is 5 mm; the diameter phi of the third section of the threaded hole is 6, and the length is 9 mm.

And 4, sawing a processing seam on the side surface of the waste reamer by using a saw blade, wherein the width of the processing seam is 1mm, and the length of the processing seam is 20 mm.

And 5, taking a section of steel material.

Step 6, processing the expansion body according to the shape of the figure 4; the first section phi is 8.6, and the length is 5 mm; the diameter phi of the small end of the inner hole of the second section is 7.5, and the length is 4 mm; the diameter of the third section of the threaded hole is phi 6, and the length of the third section of the threaded hole is 8.5 mm.

And 7, screwing the expansion body into the waste reamer.

And 8, adjusting the actual value of the maximum diameter of the reamer to be within 18.02 +/-0.01 mm through a slot on the expansion body 3 according to the maximum diameter of the reamer to be processed to be 18.03 mm.

And 9, machining the part by using a reamer.

And step 10, checking the aperture size of the part, and adjusting the actual value of the diameter of the reamer again according to the aperture size.

And 11, machining the part by using the adjusting reamer.

And 12, checking the aperture size of the part, repeating the steps of 10-11 if the part is unqualified, and continuing the subsequent steps after the part is qualified.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equally replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application, and are intended to be included within the scope of the present application.