CN216502750U - Taper composite reamer - Google Patents
Taper composite reamer Download PDFInfo
- Publication number
- CN216502750U CN216502750U CN202121085860.1U CN202121085860U CN216502750U CN 216502750 U CN216502750 U CN 216502750U CN 202121085860 U CN202121085860 U CN 202121085860U CN 216502750 U CN216502750 U CN 216502750U
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- China
- Prior art keywords
- reaming
- reamer
- cutter body
- taper hole
- taper
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- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
The utility model discloses a taper composite reamer, which comprises a reamer handle and a reamer body, wherein the reamer body is fixedly connected to the front end of the reamer handle, the rear section of the reamer body is a straight hole reaming part, the rotating profile of the reamer body is cylindrical, the front section of the reamer body is a taper hole reaming part, the rotating profile of the reamer body is a circular truncated cone, the maximum diameter of the taper hole reaming part is equal to the diameter of the straight hole reaming part, and the inclination angle of the outer surface of the taper hole reaming part relative to the axis of the reamer body is alpha; when the reamer is used for reaming a taper hole with an angle at the front end and a straight hole at the rear end connected with the taper hole, the straight-groove reaming edge can realize the shaping reaming of the taper hole and the straight hole, and a single taper reamer is not needed for reaming, so that the processing efficiency is improved, errors generated in the tool changing process are avoided, and the processing precision is ensured.
Description
Technical Field
The utility model belongs to the technical field of metal cutting processing, and particularly relates to a taper composite reamer.
Background
The taper hole with the taper is generally used for cooperating with taper pin axle, plays the effect of relatively fixed grafting in mechanical structure junction, is generally greater than conventional round hole for the hole processing degree of difficulty of toper to the bottom. The conventional processing mode needs to go through a plurality of reaming processes, and the common process is to drill a small hole at first, the aperture is slightly lower than the small diameter of the taper hole, then carry out rough reaming and finish reaming, use the rough reamer to ream the straight hole into the taper hole first to reduce the cutting force of the finish reamer, finally finish by the finish reamer processing, reach the taper hole size, form and position tolerance and surface roughness that the product required. The traditional machining mode needs to replace the cutter for many times in the machining process, which brings larger positioning error and causes lower precision of the machined taper hole.
Disclosure of Invention
The utility model provides a taper compound reamer, aiming at overcoming the defects of low accuracy and low processing efficiency caused by the fact that multiple tool changing and multiple positioning are needed for processing taper holes in the prior art.
The technical scheme of the utility model is as follows: the taper composite reamer comprises a reamer handle and a reamer body, wherein the reamer body is fixedly connected to the front end of the reamer handle, the rear section of the reamer body is a straight hole reaming part, the rotating profile of the reamer body is cylindrical, the front section of the reamer body is a taper hole reaming part, the rotating profile of the reamer body is a circular truncated cone, the maximum diameter of the taper hole reaming part is equal to the diameter of the straight hole reaming part, and the outer surface of the taper hole reaming part is alpha relative to the inclination angle of the axis of the reamer body. The reamer can be used for compositely connecting the straight reaming part with the tapered reaming part, processing the straight hole with the bottom being the tapered hole, and performing one-step forming during processing without using different reamers for repeated reaming.
Furthermore, the cutter body is provided with four straight groove reaming edges around the periphery of the cutter body, each straight groove reaming edge penetrates through the taper hole reaming part and the straight hole reaming part along the length direction, and a chip discharge groove is formed between every two adjacent straight groove reaming edges. The chip discharge groove continuously discharges machining chips outwards in the process that the reamer is deeply reamed.
Further, the straight flute reaming edge is edged from the end face of the taper hole reaming part, and an edge point is formed on the end face. The edge is formed from the end face, and the blade point can be formed, so that the large-area contact between the end part of the reamer and a workpiece can be avoided, and the generation of a vibration cutter can be avoided.
Furthermore, one seventh section in the front of the cutter body is a taper hole reaming part.
Furthermore, the value range of the alpha is more than or equal to 3 and less than or equal to 5.
Further, the cutter body and the cutter handle are integrally formed parts made of hard alloy, and the surface of the cutter body is coated with a nitrogen-aluminum-titanium coating.
Compared with the prior art, the utility model has the beneficial effects that: the front end of the taper composite reamer is provided with a truncated cone-shaped taper hole reaming part, can machine deep holes with the bottoms in taper hole shapes and the upper parts in normal circular holes, and can be matched with a pin shaft to be mutually inserted at a mechanical connection part. When the angle taper hole is formed at the front end of the straight groove reaming edge, and the straight hole is formed at the rear end of the straight groove reaming edge, the straight groove reaming edge can be used for reaming the taper hole and the straight hole, and an independent taper reamer is not required to be used for reaming for multiple times during machining, so that the straight groove reaming edge can be formed in one-time drilling mode, the precision error caused by repeated tool setting is avoided, and the machining efficiency is effectively improved.
Drawings
FIG. 1 is an axial view of a tapered compound reamer of the present invention;
labeled as: the tool comprises a tool shank 1, a tool body 2, a straight hole reaming part 21, a taper hole reaming part 22, a straight groove reaming edge 23, a chip groove 24 and a blade tip 25.
Detailed Description
The utility model is further described below with reference to the figures and examples.
As shown in fig. 1, the taper compound reamer of the utility model comprises a shank 1 and a cutter body 2, wherein the cutter body 2 is fixedly connected to the front end of the shank 1, the cutter body 2 comprises a taper hole reaming part 22 and a straight hole reaming part 21, wherein the rear section of the cutter body 2 is the straight hole reaming part 21, the rotation contour of the straight hole reaming part is cylindrical, the front section of the cutter body is the taper hole reaming part 22, and the rotation contour of the straight hole reaming part is circular truncated cone; furthermore, one seventh section in the front of the cutter body 2 is a taper hole reaming part 22, the rest part is a straight hole reaming part 21, and the maximum diameter of the taper hole reaming part 22 is equal to the diameter of the straight hole reaming part 21.
The cutter body 2 is provided with four straight groove reaming edges 23 around the periphery of the cutter body, each straight groove reaming edge 23 penetrates through the taper hole reaming part 22 and the straight hole reaming part 21 along the length direction, a chip discharge groove 24 is formed between every two adjacent straight groove reaming edges 23, and the chip discharge grooves 24 continuously discharge machining chips outwards in the process that the reamer is deeply reamed.
The straight flute reaming edge 23 is edged from the end face of the countersink reaming portion 22 and forms a cutting edge 25 on the end face. The edge is formed from the end face, and the blade tip 25 is formed, so that the large-area contact between the end part of the reamer and a workpiece can be avoided, and the generation of the cutter vibration can be avoided.
The inclination angle of the outer surface of the taper hole reaming part 22 relative to the axis of the cutter body 2 is alpha, and the value range of alpha is more than or equal to 3 and less than or equal to 5; the cutter body 2 and the cutter handle 1 are integrally formed parts made of hard alloy, and the surface of the cutter body 2 is coated with a nitrogen-aluminum-titanium coating.
While the utility model has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The taper compound reamer is characterized in that: including handle of a knife and cutter body, cutter body fixed connection is at the handle of a knife front end, the cutter body back end is straight hole reaming portion, and its profile of rotation is cylindrical, and the cutter body anterior segment is taper hole reaming portion, and its profile of rotation is the round platform type, and the maximum diameter of taper hole reaming portion equals with straight hole reaming portion diameter, the inclination of taper hole reaming portion surface for the cutter body axis is alpha.
2. The tapered compound reamer of claim 1 wherein: the cutter body is equipped with four straight flute reaming edges around its periphery, and every straight flute reaming edge all runs through in taper hole reaming portion and straight hole reaming portion along length direction, forms the chip groove between the adjacent straight flute reaming edge.
3. The tapered compound reamer of claim 2 wherein: the straight flute reaming edge is edged from the end face of the taper hole reaming part, and an edge tip is formed on the end face.
4. The tapered compound reamer of claim 1 wherein: one seventh section in front of the cutter body is a taper hole reaming part.
5. The tapered compound reamer of claim 1 wherein: the value range of the alpha is more than or equal to 3 and less than or equal to 5.
6. The tapered compound reamer of claim 1 wherein: the cutter body and the cutter handle are integrally formed parts made of hard alloy, and the surface of the cutter body is coated with a nitrogen-aluminum-titanium coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121085860.1U CN216502750U (en) | 2021-05-19 | 2021-05-19 | Taper composite reamer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121085860.1U CN216502750U (en) | 2021-05-19 | 2021-05-19 | Taper composite reamer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216502750U true CN216502750U (en) | 2022-05-13 |
Family
ID=81461186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121085860.1U Active CN216502750U (en) | 2021-05-19 | 2021-05-19 | Taper composite reamer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216502750U (en) |
-
2021
- 2021-05-19 CN CN202121085860.1U patent/CN216502750U/en active Active
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| GR01 | Patent grant |