CN217492940U - Adjustable reamer - Google Patents
Adjustable reamer Download PDFInfo
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- CN217492940U CN217492940U CN202222169199.3U CN202222169199U CN217492940U CN 217492940 U CN217492940 U CN 217492940U CN 202222169199 U CN202222169199 U CN 202222169199U CN 217492940 U CN217492940 U CN 217492940U
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- hole
- external screw
- conical ring
- screw thread
- ring
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Abstract
The utility model relates to a reamer technical field discloses a reamer with adjustable, include: the cutter body comprises a main body and a cutter head arranged at the first end of the main body, the cutter head is provided with a through hole, and the first end of the main body is provided with a hole communicated with the through hole; the conical ring is arranged inside the through hole, one end of the conical ring close to the main body is a small head end, and the outer side wall of the conical ring is in contact with the inner side wall of the through hole; the spliced pole, the first end and the second end of spliced pole are provided with first external screw thread and the second external screw thread that the same but the pitch is different of turning round respectively, and the first end of spliced pole sets up in the trompil, is provided with first internal thread on the inside wall of trompil, first external screw thread and first internal thread threaded connection, and the second end of spliced pole sets up in the awl ring, is provided with the second internal thread on the inside wall of awl ring, second external screw thread and second internal thread threaded connection. The reamer can not only enlarge the diameter of the cutter head, but also reduce the diameter of the cutter head, and meanwhile, the diameter of the cutter head is adjusted to be high in accuracy.
Description
Technical Field
The utility model relates to a reamer technical field especially relates to a reamer with adjustable.
Background
Reamers are rotary tools having one or more cutting edges for removing a thin layer of metal from the surface of a machined hole. The adjustable reamer is a reamer with the diameter of the cutter head adjustable, during actual machining, holes with different diameters are often required to be processed, the holes with different diameters are required to be matched with the cutter heads with different diameters, the frequent replacement of the reamer can lead to low working efficiency, the problem is effectively solved by the adjustable reamer, and the working efficiency is greatly improved.
The adjustable reamer commonly used at present comprises a cutter body, a cutter head, a conical ring and a single-head screw, wherein the cutter head is arranged at one end of the cutter body, the cutter head can radially expand or contract along the cutter head, the cutter head is provided with a through hole, the conical ring is arranged in the through hole, the small head end of the conical ring is opposite to the cutter body, the outer side wall of the conical ring is in contact with the inner side wall of the through hole, and the single-head screw penetrates through the conical ring and is in threaded connection with the cutter body. When the adjustable screwdriver is used, the single-head screw is rotated, and the single-head screw drives the conical ring to move, so that the diameter of the screwdriver head is adjusted. Currently, the adjustable reamers in common use mainly have the following defects:
1. referring to fig. 5, a limiting step is arranged inside a conical ring of a commonly used adjustable reamer at present, a nut of a single-head screw abuts against the limiting step to drive the conical ring to move synchronously, when the single-head screw is rotated, the limiting step is separated from the nut of the single-head screw, and when the single-head screw moves, the conical ring cannot move synchronously with the single-head screw, so that the commonly used adjustable reamer at present can only reduce the diameter of a cutter head and cannot increase the diameter of the cutter head;
2. the cap screw passes through threaded connection with the cutter body, and in order to guarantee the fastness that cap screw and cutter body are connected, cap screw and main part need adopt coarse pitch threaded connection, and the rotatory round of coarse pitch screw cap screw, the distance that the awl ring removed is big, and then makes the diameter change of tool bit big, so, tool bit diameter adjustment accuracy is low.
Therefore, it is an urgent need to solve the problem of the art to provide an adjustable reamer which can adjust the diameter of the reamer head to be large or small and has high accuracy of adjusting the diameter of the reamer head.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model provides a both can enlarge the tool bit diameter, can reduce the tool bit diameter again, the adjustable reamer that tool bit diameter adjustment accuracy is high simultaneously.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a reamer with adjustable, include: the cutter body comprises a main body and a cutter head arranged at the first end of the main body, the cutter head is provided with a through hole, and the first end of the main body is provided with a hole communicated with the through hole; the conical ring is arranged inside the through hole, one end of the conical ring close to the main body is a small head end, and the outer side wall of the conical ring is in contact with the inner side wall of the through hole; be used for the drive the awl ring is followed the spliced pole that the axis direction of tool bit removed, the first end of spliced pole sets up in the trompil, just the first end of spliced pole is provided with first external screw thread, be provided with first internal thread on the inside wall of trompil, first external screw thread with first internal thread threaded connection, the second end of spliced pole set up in the awl ring, just the second end of spliced pole is provided with the second external screw thread, be provided with the second internal thread on the inside wall of awl ring, the second external screw thread with second internal thread threaded connection, just the pitch of first external screw thread is greater than the pitch of second external screw thread, the turning of first external screw thread with the turning of second external screw thread is the same.
Preferably, the inner side wall of the through hole is a tapered surface.
Preferably, the axis of the through hole coincides with the axis of the conical ring, and the difference between a first included angle between a generatrix of the outer side wall of the conical ring and the axis of the conical ring and a second included angle between the generatrix of the inner side wall of the through hole and the axis of the conical ring is 0.5-1.5 degrees.
Preferably, the vertex angle of the outer side wall of the conical ring is 4-6 degrees.
Preferably, the difference in pitch between the first external thread and the second external thread is 0.25 mm.
Preferably, the tool bit comprises an elastic base body and a cutting edge arranged on the outer side wall of the elastic base body, the through hole is formed in the elastic base body, and the elastic base body is arranged at the first end of the main body.
Preferably, the elastic base body is made of spring steel, and the cutting edge of the tool bit is made of diamond.
Preferably, the conical ring is an alloy tool steel conical ring.
The utility model discloses for prior art gain following technological effect:
1. the utility model provides a second end of reamer spliced pole with adjustable set up in the taper ring to with taper ring threaded connection, so set up, when the spliced pole circles round, the spliced pole can not with taper ring alternate segregation, the taper ring can be along with spliced pole synchronous motion, and then the utility model provides an adjustable reamer both can enlarge the tool bit diameter, can adjust the tool bit diameter again.
2. The utility model provides a first external screw thread of reamer with adjustable is different with second external screw thread pitch, and the pitch of first external screw thread is greater than the screw thread of second external screw thread, and during the rotatory spliced pole, the actual displacement of awl ring is poor for the pitch of first external screw thread and second external screw thread, so, the rotatory round of spliced pole, tool bit diameter change is little, the diameter of adjustment tool bit that the operator can be more accurate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a perspective view of an adjustable reamer provided in an embodiment of the present invention;
fig. 2 is a cross-sectional view of an adjustable reamer provided in an embodiment of the present invention;
fig. 3 is a schematic structural view of an adjustable reamer coupling post provided in an embodiment of the present invention;
fig. 4 is a schematic view illustrating a matching manner between an inner sidewall of the adjustable reamer through hole and an outer sidewall of the cone ring according to an embodiment of the present invention;
FIG. 5 is a schematic view of a conventional adjustable reamer;
reference numbers in fig. 1-4 illustrate: 100. an adjustable reamer; 1. a main body; 2. a cutter head; 201. a cutting edge; 3. a conical ring; 4. connecting columns;
the reference numerals in fig. 5 illustrate: 1', a single-head screw; 2' and a conical ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
The utility model aims at providing a both can enlarge the tool bit diameter, can transfer the tool bit diameter to diminish again, the adjustable reamer that tool bit diameter adjustment accuracy is high simultaneously.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 to 4, the present embodiment provides an adjustable reamer 100, including: the cutter body comprises a main body 1 and a cutter head 2 arranged at the first end of the main body 1, wherein the cutter head 2 is provided with a through hole, and the first end of the main body 1 is provided with a hole communicated with the through hole; the conical ring 3 is arranged in the through hole, one end of the conical ring 3 close to the main body 1 is a small end, the outer side wall of the conical ring 3 is in contact with the inner side wall of the through hole, and the cutter head 2 can radially expand outwards or radially contract inwards under the action of the conical ring 3; a spliced pole 4 that is used for driving conical ring 3 to remove along the axis direction of tool bit 2, the first end of spliced pole 4 sets up in the trompil, and the first end of spliced pole 4 is provided with first external screw thread, be provided with first internal thread on the inside wall of trompil, first external screw thread and first internal thread threaded connection, the second end of spliced pole 4 sets up in conical ring 3, and the second end of spliced pole 4 is provided with the second external screw thread, be provided with the second internal thread on conical ring 3's the inside wall, second external screw thread and second internal thread threaded connection, and the pitch of first external screw thread is greater than the pitch of second external screw thread, this adjustable reamer 100 both can enlarge tool bit 2 diameter, can reduce tool bit 2 diameter again, 2 diameter adjustment accuracy of tool bit is high simultaneously.
In the embodiment, for convenience of operation, the rotation directions of the first external thread, the first internal thread, the second external thread and the second internal thread are all clockwise. Of course, the turning directions of the first external thread, the first internal thread, the second external thread and the second internal thread are not limited to be clockwise, and the turning directions of the first external thread, the first internal thread, the second external thread and the second internal thread may also be counterclockwise.
In this embodiment, as shown in fig. 4, the inner wall of the through hole is a tapered surface. Further, the axis of the through hole coincides with the axis of the conical ring 3, the difference between a first included angle between the bus of the outer side wall of the conical ring 3 and the axis of the conical ring 3 and a second included angle between the bus of the inner side wall of the through hole and the axis of the conical ring 3 is 0.5-1.5 degrees, the included angle between the inner side wall of the through hole and the outer side wall of the conical ring 3 is very small, the inner side wall of the through hole and the outer side wall of the conical ring 3 are approximately in surface-to-surface contact, after extrusion deformation, the surface-to-surface contact is realized between the inner side wall of the through hole and the outer side wall of the conical ring 3, and therefore the assembly precision of the conical ring 3 is guaranteed.
Further, as shown in fig. 4, in the present embodiment, specifically, a difference between a first angle between a generatrix of the outer sidewall of the conical ring 3 and the axis of the conical ring 3 and a second angle between the generatrix of the inner sidewall of the through hole and the axis of the conical ring 3 is 1 degree.
In this embodiment, the vertex angle of the outer sidewall of the conical ring 3 is 4 ° to 6 °, the outer sidewall of the conical ring 3 is of a conical structure, and the vertex angle refers to the vertex angle of a cone.
In this embodiment, the pitch difference between the first external thread and the second external thread is 0.25 mm. Specifically, the pitch of the first external thread is 1mm, and the pitch of the second external thread is 0.75 mm. It should be noted that the reason why the first external thread and the second external thread are provided instead of using the small pitch thread instead of the second external thread is that the connection strength of the connection post 4 to the main body 1 is poor when the small pitch thread is used. In addition, the diameter of the cutter head 2 is adjusted by utilizing the pitch difference between the first external thread and the second external thread, so that the diameter adjustment accuracy of the cutter head 2 is higher.
In the present embodiment, as shown in fig. 1-2, the cutting head 2 includes an elastic base and a cutting blade 201 disposed on an outer side wall of the elastic base, the through hole is disposed on the elastic base, and the elastic base is disposed at the first end of the body 1.
In the present embodiment, the elastic base is made of spring steel, and the cutting edge 201 of the tip 2 is made of diamond. It should be noted that the resilient base is not limited to spring steel, and the cutting edge 201 of the cutting tip 2 is not limited to diamond, which is only illustrated here.
In the present embodiment, the conical ring 3 is an alloy tool steel conical ring. As above, the material of the conical ring 3 is not limited to alloy tool steel, and is only exemplified here.
Under the action of the friction force between the outer side wall of the conical ring 3 and the inner side wall of the through hole, the conical ring 3 can only move along the axial direction of the main body 1 and cannot rotate. In the specific use, the spliced pole 4 is rotated clockwise, and under the drive of spliced pole 4, the cone ring 3 removes to the direction that is close to 1 first end of main part, along with the removal of cone ring 3, radial outside expansion, the increase of 2 diameters of tool bit 2 are followed to tool bit 2. On the contrary, rotating the connecting column 4 towards the anticlockwise direction, i.e. rotating the connecting column 4 around, the connecting column 4 drives the conical ring 3 to move towards the direction away from the first end of the main body 1, in the process, along with the movement of the conical ring 3, the cutter head 2 contracts along the radial direction of the cutter head, and the diameter of the cutter head 2 is reduced. Thus, by rotating the connecting column 4, the diameter of the cutter head 2 can be easily adjusted to be large or small.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. An adjustable reamer, comprising:
the cutter body comprises a main body and a cutter head arranged at the first end of the main body, the cutter head is provided with a through hole, and the first end of the main body is provided with a hole communicated with the through hole;
the conical ring is arranged inside the through hole, one end of the conical ring close to the main body is a small head end, and the outer side wall of the conical ring is in contact with the inner side wall of the through hole;
be used for the drive the awl ring is followed the spliced pole that the axis direction of tool bit removed, the first end of spliced pole sets up in the trompil, just the first end of spliced pole is provided with first external screw thread, be provided with first internal thread on the inside wall of trompil, first external screw thread with first internal thread threaded connection, the second end of spliced pole set up in the awl ring, just the second end of spliced pole is provided with the second external screw thread, be provided with the second internal thread on the inside wall of awl ring, the second external screw thread with second internal thread threaded connection, just the pitch of first external screw thread is greater than the pitch of second external screw thread, the turning of first external screw thread with the turning of second external screw thread is the same.
2. The adjustable reamer of claim 1, wherein the inner sidewall of the through hole is a tapered surface.
3. The adjustable reamer of claim 2, wherein the axis of the through hole coincides with the axis of the conical ring, and the difference between a first included angle between a generatrix of the outer side wall of the conical ring and the axis of the conical ring and a second included angle between the generatrix of the inner side wall of the through hole and the axis of the conical ring is 0.5-1.5 degrees.
4. The adjustable reamer of claim 1 wherein the apex angle of the outer sidewall of the cone ring is between 4 ° and 6 °.
5. The adjustable reamer of claim 1 wherein the difference in pitch of the first external thread and the second external thread is 0.25 mm.
6. The adjustable reamer of claim 1, wherein the cutting head comprises an elastomeric base and a cutting edge disposed on an outer sidewall of the elastomeric base, the through hole is disposed on the elastomeric base, and the elastomeric base is disposed at the first end of the body.
7. The adjustable reamer of claim 6 wherein the elastomeric matrix is made of spring steel and the cutting edge of the cutting head is made of diamond.
8. The adjustable reamer of claim 1 wherein the cone ring is an alloy tool steel cone ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222169199.3U CN217492940U (en) | 2022-08-18 | 2022-08-18 | Adjustable reamer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222169199.3U CN217492940U (en) | 2022-08-18 | 2022-08-18 | Adjustable reamer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217492940U true CN217492940U (en) | 2022-09-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222169199.3U Active CN217492940U (en) | 2022-08-18 | 2022-08-18 | Adjustable reamer |
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| CN (1) | CN217492940U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116638152A (en) * | 2023-06-15 | 2023-08-25 | 易优创(苏州)精密工具有限公司 | Adjustable reamer |
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2022
- 2022-08-18 CN CN202222169199.3U patent/CN217492940U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116638152A (en) * | 2023-06-15 | 2023-08-25 | 易优创(苏州)精密工具有限公司 | Adjustable reamer |
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