CN212168984U - Positive and negative direction boring composite cutter - Google Patents
Positive and negative direction boring composite cutter Download PDFInfo
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- CN212168984U CN212168984U CN202020376682.7U CN202020376682U CN212168984U CN 212168984 U CN212168984 U CN 212168984U CN 202020376682 U CN202020376682 U CN 202020376682U CN 212168984 U CN212168984 U CN 212168984U
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Abstract
A composite cutter for boring in the positive and negative directions relates to a cutter. The using end of the knife handle is coaxially fixed with the rear knife body, the front end of the rear knife body is eccentrically fixed with the front knife body, and the front knife body, the rear knife body and the knife handle are integrally cast and molded; the side wall of the rear cutter body is detachably fixed with the first stepped hole cutting blade and the second stepped hole cutting blade, the radial distance between the cutting edge of the first stepped hole cutting blade and the central line of the rear cutter body is smaller than the radial distance between the cutting edge of the second stepped hole cutting blade and the central line of the rear cutter body, the side wall of the front cutter body is detachably and fixedly connected with the reverse boring cutting blade, the reverse boring cutting blade and the first stepped hole cutting blade are arranged on the same side, and the radial distance between the cutting edge of the reverse boring cutting blade and the central line of the front cutter body is larger than the radial distance between the cutting edge of the first stepped hole cutting blade. The utility model provides some of box class part have reduced the processing cost because the machining efficiency that part structure restriction method carried out positive machined surface or positive and negative bore hole.
Description
Technical Field
The utility model relates to a cutter, especially a just, reverse direction bore hole gang tool.
Background
In the machining of engine case parts (cylinder bodies, casings and the like), part of machined holes need to be chamfered at two ends of the holes or bored at two ends of the holes, and certain machined parts cannot be machined in the front side (namely the side opposite to a main shaft of a machining center) due to the structural limitation of the parts. In the existing industry, an angle head (a tool for transmitting the rotation power of a main shaft and capable of changing the machining angle) or a circular interpolation milling method is generally used for machining the surfaces of parts which cannot be machined frontally.
The angle head is internally driven by the gear, when heavy cutting machining is carried out, because the machining load is large, the internal parts of the angle head are easily abraded, the machining precision is reduced, the purchase cost of the angle head is high, and the machining cost of the parts is increased. The circular interpolation milling method is more commonly applied, the tool cost is lower, but the circular interpolation milling method can only be applied to reverse side milling face machining or chamfer machining, cannot be applied to cylinder hole machining, and simultaneously, the machining efficiency is lower due to the long interpolation feed path.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the background technology, the utility model provides a boring compound cutter in the positive and negative directions.
The purpose is achieved, the utility model adopts the following technical proposal: a forward-reverse boring composite tool comprises a rear tool body, a front tool body, a second stepped hole cutting blade, a reverse boring cutting blade, a first stepped hole cutting blade and a tool handle, wherein the use end of the tool handle is coaxially and fixedly connected with the rear tool body, the front end of the rear tool body is eccentrically and fixedly connected with the front tool body, and the front tool body, the rear tool body and the tool handle are integrally cast and formed; the side wall of the rear cutter body is detachably and fixedly connected with a first stepped hole cutting blade and a second stepped hole cutting blade, the radial distance between the cutting edge of the first stepped hole cutting blade and the central line of the rear cutter body is smaller than that between the cutting edge of the second stepped hole cutting blade and the central line of the rear cutter body, the side wall of the front cutter body is detachably and fixedly connected with a reverse boring cutting blade, the reverse boring cutting blade and the first stepped hole cutting blade are arranged on the same side, and the radial distance between the cutting edge of the reverse boring cutting blade and the central line of the front cutter body is larger than that between the cutting edge of the first stepped hole cutting blade and the central line of the rear.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses back cutter body and preceding cutter body and first shoulder hole cutting blade, second shoulder hole cutting blade, reverse bore hole cutting blade have constituted positive, reverse bore hole special tool. By utilizing the principles of 'concentric circles' and 'eccentric circles', the three blades are arranged at intervals, the machining diameters of the three blades are different, cutter relieving action is realized, concentric machining is carried out during machining, and the machining requirements are met.
2. The utility model relates to a processing engine box class special boring cutter that part used on numerical control machining center, reverse side when the reverse side of processing hole is because of processing space, reasons such as stroke restriction can't openly process or improve just, when reverse side bore hole machining efficiency, can use this cutter to accomplish processing, compound front boring cutter and reverse side boring cutter, accomplish the rapid tooling of some specific holes, it is good to have the rigidity, the process velocity is fast, the machining precision is high, the low grade advantage of processing cost, some that have promoted box class part because part structure limiting method carries out the machining efficiency of front machined surface or positive and negative bore hole, the processing cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a left side view of FIG. 1;
fig. 3 is a schematic structural diagram of a starter using the present invention;
FIG. 4 is a schematic view of the center line of the front cutter body being concentric with the machined hole during use of the present invention;
FIG. 5 is a schematic view of the first stepped hole cutting insert during use of the present invention, but short of the end face of the hole being machined;
FIG. 6 is a schematic view of the center line of the front cutter body being concentric with the machined hole during use of the present invention;
fig. 7 is a schematic view of the first stepped hole cutting blade and the second stepped hole cutting blade cutting until the forward boring processing of the first stepped hole and the second stepped hole is completed during the use of the present invention;
fig. 8 is a schematic view of a reverse bore cutting insert during use of the present invention when the reverse bore cutting insert has not reached the reverse bore end face;
FIG. 9 is a schematic view of the utility model when it is processed to a specified depth during the use process;
FIG. 10 is a schematic view of the center line of the front cutter body being concentric with the hole being machined during use of the present invention;
fig. 11 is a schematic view of the present invention after the process is completed during the use.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
The first embodiment is as follows: as shown in fig. 1 to 11, the utility model discloses a boring composite tool in the positive and negative directions, including rear cutter body 1, front cutter body 2, second stepped hole cutting blade 3, reverse boring cutting blade 4, first stepped hole cutting blade 5 and handle of a knife 6, the user end of handle of a knife 6 is connected with rear cutter body 1 is coaxial fixed, the front end of rear cutter body 1 is connected with front cutter body 2 is eccentric fixed, the eccentric size is designed according to the diameter size of the concrete processing hole, front cutter body 2, rear cutter body 1 and handle of a knife 6 are cast into one piece; the side wall of the rear cutter body 1 is detachably and fixedly connected with the first stepped hole cutting blade 5 and the second stepped hole cutting blade 3, for forward boring, the radial distance between the cutting edge of the first stepped hole cutting blade 5 and the central line of the rear cutter body 1 is smaller than the radial distance between the cutting edge of the second stepped hole cutting blade 3 and the central line of the rear cutter body 1, the side wall of the front cutter body 2 is detachably and fixedly connected with the reverse boring cutting blade 4, the reverse boring cutting blade 4 is arranged on the same side as the first stepped hole cutting blade 5 and used for reverse boring, the radial distance between the cutting edge of the reverse boring cutting blade 4 and the central line of the front cutter body 2 is larger than that between the cutting edge of the first stepped hole cutting blade 5 and the central line of the rear cutter body 1, and the radial distance between the cutting edge of the reverse boring cutting blade 4 and the central line of the front cutter body 2 and the radial distance between the cutting edge of the second stepped hole cutting blade 3 and the central line of the rear cutter body 1 have no corresponding relation.
The second embodiment is as follows: as shown in fig. 1 to 2, the present embodiment is a description of a first embodiment, and the radius of the front blade body 2 is smaller than the radius of the rear blade body 1.
The third concrete implementation mode: as shown in fig. 1, this embodiment is further described with respect to the second embodiment, and the side wall of the front cutter body 2 is provided with a protrusion, and the protrusion is detachably and fixedly connected with the reverse boring cutting insert 4.
The fourth concrete implementation mode: as shown in fig. 1, in this embodiment, a third embodiment is further described, wherein the first stepped hole cutting insert 5, the second stepped hole cutting insert 3 and the reverse boring cutting insert 4 are respectively mounted on corresponding tool holders, the tool holders are correspondingly connected with the protrusions of the front tool body 2 and the rear tool body 1 through screws, the tool holders and the screws are common parts in machining tools, and the tool holders and the three inserts can be specifically designed according to the material, machining allowance, surface finish requirement and the like of the machined parts.
The fifth concrete implementation mode: as shown in fig. 1 to 2, in the present embodiment, a fourth embodiment is further described, and the distance between the cutting edge of the counter bore cutting insert 4 and the center line of the front cutter body 2 is larger than the radius of the rear cutter body 2.
The utility model discloses generally be used for just, reverse boring diameter is greater than 50 mm's shoulder hole, and the hole of processing is precast hole, through-hole, or is using the utility model discloses preceding processing out the bottom outlet on the work piece, and hole diameter must be greater than 2 diameters of front cutter body, just, when the hole is bored in the opposite direction, numerical control machining center main shaft orientation makes reverse bore hole cutting blade 4 towards Y-direction (also can other angles), removes and makes front cutter body 2, makes its central line and the hole of processing concentric (as shown in fig. 4), then the utility model discloses stretch into in the hole of processing, make reverse bore hole cutting blade 4 pass through the hole of processing completely, first shoulder hole cutting blade 5 did not reach the terminal surface in the hole of processing this moment (as shown in fig. 5). The rear cutter body 1 is moved to make the center line thereof concentric with the machined hole (as shown in fig. 6), and then the rear cutter body 1 starts to rotate and move forward, and the first stepped hole cutting blade 5 and the second stepped hole cutting blade 3 start to cut in sequence until the forward boring machining of the first stepped hole 8 and the second stepped hole 9 is completed (as shown in fig. 7). After the first stepped hole 8 and the second stepped hole 9 are machined to a specified depth, the rear cutter body 1 is quickly moved backward until the first stepped hole cutting blade 5 and the second stepped hole cutting blade 3 exit from the machined holes, and at this time, the reverse boring cutting blade 4 does not reach the end surface of the reverse hole 10 (as shown in fig. 8). When the quick tool retracting action is completed, the rear tool body 1 starts to retract at a set machining speed, and the reverse boring cutting blade 4 starts reverse boring machining of the reverse hole 10 until a specified depth is machined (as shown in fig. 9). After the reverse boring is finished, the rear cutter body 1 stops and orients the main shaft of the numerical control machining center to orient the reverse boring cutting blade 4 to the Y-direction, then the main shaft of the numerical control machining center moves to enable the center line of the front cutter body 2 to be concentric with the machined hole (as shown in figure 10), the rear cutter body 1 moves backwards to enable the front cutter body 2 and the reverse boring cutting blade 4 to pass through the first stepped hole 8 until the front cutter body and the reverse boring cutting blade exit to positions far away from the end face of the hole, and at this time, the forward boring and the reverse boring machining of each hole is finished (as shown in figure 11.
As shown in fig. 3, taking the processing of the starter mounting hole by the company as an example, the reverse hole 10 of the starter mounting hole is blocked by the front end surface structure, and the existing tool cannot process the reverse hole 10 of the starter mounting hole in the front direction. Therefore, it is
The first processing scheme is as follows:
the angle head is used for machining a reverse hole 10 of the starter mounting hole, the boring cutter is used for machining the first stepped hole 8 and the second stepped hole 9, two cutters are needed in the scheme, machining efficiency is low, cost investment of the angle head is high, and service life is short.
And a second processing scheme:
the reverse hole 10 of the starter mounting hole is machined by using a boring cutter through an arc interpolation milling method, the first stepped hole 8 and the second stepped hole 9 are machined by using the boring cutter, two cutters are needed in the scheme, the arc interpolation milling machining path is long, the rigidity of the cutters is poor, the machining efficiency is low, and the cutter cost is low.
However, use the utility model discloses can process the reverse hole 10 of starter mounting hole, first step hole 8 and second step hole 9 together, have that machining path is short, the cutter rigidity is good, machining efficiency is high, the advantage of cutter with low costs. Compared with the first scheme and the second scheme, the cost of the cutter is reduced by more than 50%, and the processing efficiency is improved by 2 times.
The utility model relates to a combine inseparable special tool with the production reality is a high efficiency, high accuracy, high rigidity, low-cost bore hole processing cutter, is fit for being used for the just, the processing of anti-bore hole in some holes of engine box class part. By utilizing the principles of 'concentric circles' and 'eccentric circles', the difference design of the diameter of the cutter body and the machining diameter of the blade and the eccentric design of the cutter body are carried out, the blades are arranged at intervals, and finally the boring machining of forward and reverse multi-step holes is met. The problems of low processing efficiency and high processing cost of the forward and reverse boring are solved.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A kind of positive, reverse direction bore hole compound cutting tool, characterized by: the tool comprises a rear tool body (1), a front tool body (2), a second stepped hole cutting blade (3), a reverse boring cutting blade (4), a first stepped hole cutting blade (5) and a tool handle (6), wherein the use end of the tool handle (6) is coaxially and fixedly connected with the rear tool body (1), the front end of the rear tool body (1) is eccentrically and fixedly connected with the front tool body (2), and the front tool body (2), the rear tool body (1) and the tool handle (6) are integrally cast and formed; the side wall of the rear cutter body (1) is detachably and fixedly connected with a first stepped hole cutting blade (5) and a second stepped hole cutting blade (3), the radial distance between the cutting edge of the first stepped hole cutting blade (5) and the central line of the rear cutter body (1) is smaller than that between the cutting edge of the second stepped hole cutting blade (3) and the central line of the rear cutter body (1), the side wall of the front cutter body (2) is detachably and fixedly connected with a reverse boring cutting blade (4), the reverse boring cutting blade (4) is arranged on the same side as the first stepped hole cutting blade (5), and the radial distance between the cutting edge of the reverse boring cutting blade (4) and the central line of the front cutter body (2) is larger than that between the cutting edge of the first stepped hole cutting blade (5) and the central line of the rear cutter body (1).
2. A positive and negative direction boring composite tool as claimed in claim 1, wherein: the radius of the front cutter body (2) is smaller than that of the rear cutter body (1).
3. A forward and reverse direction boring composite tool as set forth in claim 2, wherein: the side wall of the front cutter body (2) is provided with a bulge, and the bulge is detachably and fixedly connected with the reverse boring cutting blade (4).
4. A forward and reverse direction boring composite tool as set forth in claim 3, wherein: the first stepped hole cutting blade (5), the second stepped hole cutting blade (3) and the reverse boring cutting blade (4) are respectively installed on corresponding tool holders, and the tool holders are correspondingly connected with the bulges of the front tool body (2) and the rear tool body (1) through screws.
5. The forward and reverse direction boring composite tool according to claim 4, wherein: the radial distance between the cutting edge of the reverse boring cutting blade (4) and the center line of the front cutter body (2) is larger than the radius of the rear cutter body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020376682.7U CN212168984U (en) | 2020-03-23 | 2020-03-23 | Positive and negative direction boring composite cutter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020376682.7U CN212168984U (en) | 2020-03-23 | 2020-03-23 | Positive and negative direction boring composite cutter |
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| CN212168984U true CN212168984U (en) | 2020-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020376682.7U Active CN212168984U (en) | 2020-03-23 | 2020-03-23 | Positive and negative direction boring composite cutter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115582572A (en) * | 2022-11-18 | 2023-01-10 | 成都和鸿科技股份有限公司 | Reverse side hole milling cutter and milling method |
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2020
- 2020-03-23 CN CN202020376682.7U patent/CN212168984U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115582572A (en) * | 2022-11-18 | 2023-01-10 | 成都和鸿科技股份有限公司 | Reverse side hole milling cutter and milling method |
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