CN215902857U

CN215902857U - Automobile oil way valve plate reaming type oil mist cooling PCD reamer

Info

Publication number: CN215902857U
Application number: CN202122198605.4U
Authority: CN
Inventors: 沈冰熔
Original assignee: Shanghai Jingchi Precision Tools Co ltd
Current assignee: Shanghai Jingchi Precision Tools Co ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-02-25
Anticipated expiration: 2031-09-10

Abstract

The utility model relates to a reaming type oil mist cooling PCD reamer for an automobile oil way valve plate, which relates to the technical field of machining tools and comprises a clamping part, a guiding part and a cutting part, wherein a PCD blade is arranged on the cutting part, an oil supply hole is formed in the clamping part, a first cooling cavity is formed in the guiding part, and the first cooling cavity is communicated with the oil supply hole; a second cooling cavity is formed in the cutting part and communicated with one end, far away from the oil supply hole, of the first cooling cavity; an atomizing block is arranged in the first cooling cavity in a penetrating mode, an oil inlet is formed in one end, close to the oil supply hole, of the atomizing block, a plurality of oil outlets are formed in the other end of the atomizing block, the oil outlets are communicated with the oil inlet, the sectional area of the oil outlets is smaller than that of the oil inlet, a plurality of jet holes are formed in the cutting portion, and one ends of the jet holes are communicated with the second cooling cavity. This application has improved the cooling effect of guide part when not influencing the cooling effect of cutting part.

Description

Automobile oil way valve plate reaming type oil mist cooling PCD reamer

Technical Field

The utility model relates to the field of machining tools, in particular to an automobile oil way valve plate reaming type oil mist cooling PCD reamer.

Background

PCD cutters, also called polycrystalline diamond cutters, have the characteristics of high hardness, high compressive strength, good heat conductivity, good wear resistance and the like, and can obtain very high processing precision and processing efficiency in high-speed cutting. The reamer is a tool dedicated for reaming or repairing a hole among machining tools, and the PCD reamer is a tool dedicated for reaming or repairing a hole using polycrystalline diamond as a blade.

At present, the announcement day is 2014 12 months 31 days, and chinese utility model patent that the announcement number is CN204053124U provides an automobile oil circuit valve plate reaming type oil mist cooling PCD spiral guide strip reamer, and it includes the clamping part be connected with the main shaft, set up the guide part of keeping away from main shaft one end at the clamping part and set up the cutting part of keeping away from clamping part one end at the guide part, installs the PCD blade on the cutting part. The reamer is provided with an oil supply hole, the oil supply hole completely penetrates through the clamping part and the rear part of the guide part to penetrate through the cutting part, a plurality of injection holes are formed in the cutting part and are uniformly distributed along the circumferential direction of the cutting part, and one end of each injection hole is communicated with the oil supply hole.

In use, the cooling oil mist is injected into the oil supply hole in the main shaft, and then the cooling oil mist is ejected from the ejection hole. The cutting part of the reamer is fully cooled by the cooling oil mist under the jet impact action, the gas-liquid two-phase strong convection action and the vaporization action of the cooling oil mist.

In view of the above-described related art, the inventors believe that the cooling oil mist does not form an effective jet impact action, a strong gas-liquid two-phase convection action, and a vaporization action in the oil supply hole, so that the cooling efficiency of the guide portion is low.

SUMMERY OF THE UTILITY MODEL

In order to improve the cooling efficiency of the guide part, the utility model provides an automobile oil way valve plate reaming type oil mist cooling PCD reamer.

The utility model provides a reaming type oil mist cooling PCD reamer for an automobile oil way valve plate, which adopts the following technical scheme:

a PCD reamer for reaming an oil way valve plate of an automobile comprises a clamping part, a guide part and a cutting part, wherein a PCD blade is mounted on the cutting part, an oil supply hole is formed in the clamping part, a first cooling cavity is formed in the guide part, and the first cooling cavity is communicated with the oil supply hole; a second cooling cavity is formed in the cutting part and communicated with one end, far away from the oil supply hole, of the first cooling cavity;

an atomizing block penetrates through the first cooling cavity, an oil inlet is formed in one end, close to the oil supply hole, of the atomizing block, a plurality of oil outlets are formed in the other end of the atomizing block, the oil outlets are communicated with the oil inlets, the sectional areas of the oil outlets are smaller than those of the oil inlets, jet holes are formed in the cutting portion, and one ends of the jet holes are communicated with the second cooling cavity.

By adopting the technical scheme, when the workpiece is reamed, the cooling oil is introduced into the oil supply hole, then the cooling oil flows into the first cooling cavity, and at the moment, the cooling oil cools the supporting part; and then cooling oil flows into the atomizing block through the oil inlet, forms cooling oil mist under the atomizing action of the atomizing block, flows into the spray hole through the second cooling cavity, and is sprayed out from the spray hole to cool the cutting part. Because the cooling oil is liquid in the first cooling cavity, the cooling oil can be fully contacted with the inner wall of the first cooling cavity, the cooling effect of the guide part is improved, and the probability that the guide part is blocked in a workpiece by thermal expansion is reduced.

Optionally, the cross sections of the first cooling cavity and the second cooling cavity are circular, and the diameter of the second cooling cavity is smaller than that of the first cooling cavity, so that a limiting portion is formed at one end of the cutting portion, which is close to the guide portion.

Through adopting above-mentioned technical scheme, the cooling oil in the first cooling chamber is applyed and is given atomizing piece pressure, makes atomizing piece compress tightly in spacing portion, has reduced the probability of atomizing piece drunkenness in first cooling chamber and second cooling chamber.

Optionally, a sealing gasket is arranged between the atomization block and the limiting part, one end of the sealing gasket is abutted to the atomization block, and the other end of the sealing gasket is abutted to the limiting part.

Through adopting above-mentioned technical scheme, the cooling oil in the first cooling chamber is exerted for atomizing piece pressure, and then compresses tightly sealed the pad in spacing portion, has reduced the probability that the cooling oil in the first cooling chamber reveals to the second cooling chamber between atomizing piece and the limiting plate, has improved the cooling effect of cutting portion.

Optionally, spacing portion is close to a terminal surface in first cooling chamber is first spigot surface, first spigot surface is the conical surface, be provided with the second spigot surface on the atomizing piece, the second spigot surface also is the conical surface, first spigot surface with the second spigot surface is parallel, sealed one end with first spigot surface butt, the other end with the second spigot surface butt.

Through adopting above-mentioned technical scheme, when the cooling oil in the first cooling chamber was exerting pressure to the atomizing piece, the pressure of sealed pad was exerted for to the second spigot surface, and the pressure that sealed pad was exerted for to the second spigot surface is greater than the pressure that the cooling oil exerted for the atomizing piece, has further reduced the probability that the cooling oil in the first cooling chamber leaked to the second cooling chamber between atomizing piece and the limiting plate, has improved the cooling effect of cutting portion.

Optionally, the cross-section of the atomizing block is circular, and the diameter of the atomizing block is smaller than that of the first cooling cavity, and the diameter of the oil supply hole is not smaller than that of the first cooling cavity.

Through adopting above-mentioned technical scheme, when the atomizing piece takes place to block up, can take out the atomizing piece from first cooling chamber and change, so prolonged the life of reamer, can guarantee to get into the quantity of cooling oil mist in the second cooling chamber simultaneously, and then guarantee the cooling effect of cutting portion.

Optionally, the second cooling cavity extends completely through the cutting portion.

Through adopting above-mentioned technical scheme, when atomizing piece card died in first cooling chamber, maintainer can follow in the second cooling chamber and exert pressure for atomizing piece, is convenient for pull down atomizing piece from first cooling chamber, and then is convenient for the maintenance of reamer.

Optionally, a plug is arranged in the second cooling cavity in a penetrating manner, the outer peripheral surface of the plug is abutted to the inner wall of the second cooling cavity, and the plug is arranged at one end, far away from the first cooling cavity, of the second cooling cavity.

By adopting the technical scheme, the end cap plugs the end, away from the first cooling cavity, of the second cooling cavity, so that the leakage probability of the cooling oil mist from the end, away from the first cooling cavity, of the second cooling cavity is reduced, the flow of the cooling oil mist in the spray hole is improved, and the cooling effect of the cutting part is further improved.

Optionally, a sealing ring is sleeved on the outer peripheral surface of the plug, and the outer peripheral surface of the sealing ring is abutted to the inner peripheral surface of the second cooling cavity.

By adopting the technical scheme, the sealing ring is used for sealing the gap between the plug and the second cooling cavity, so that the leakage probability of the cooling oil mist from one end of the second cooling cavity far away from the first cooling cavity is further reduced, the flow of the cooling oil mist in the spray hole is improved, and the cooling effect of the cutting part is further improved.

Optionally, one end of the plug close to the atomizing block is connected with a connecting rod, and one end of the connecting rod far away from the plug is connected with the atomizing block.

Through adopting above-mentioned technical scheme, when changing end cap and atomizing piece, the end cap links together with the atomizing piece all the time, has reduced the probability of end cap adhesion in second cooling chamber or oil feed hole, and then the maintenance of the reamer of being convenient for.

Optionally, one end of the connecting rod is in threaded connection with the atomizing block, and the other end of the connecting rod is in threaded connection with the plug.

Because the model of reamer is different, the length of its cutting portion, the diameter in first cooling chamber, the diameter in second cooling chamber all probably are different, through adopting above-mentioned technical scheme, but according to the different end cap of different reamer optional model, atomizing piece and connecting rod, improved the suitability of end cap, atomizing piece and connecting rod.

In summary, the utility model includes at least one of the following beneficial technical effects:

through the setting of atomizing piece, the cooling oil is liquid in first cooling chamber, and the cooling oil is the fog in the jet orifice, so when not influencing the cooling effect of cutting portion, improved the cooling effect of guide part.

Through the setting of sealed pad, reduced the cooling oil in the first cooling chamber and revealed the probability in the second cooling chamber from between atomizing piece and the limiting plate, improved the cooling effect of cutting portion.

Through setting up the second cooling chamber into the cutting portion that runs through completely, when atomizing piece card died in first cooling chamber, maintainer can follow in the second cooling chamber and exert pressure for atomizing piece, is convenient for pull down atomizing piece from first cooling chamber, and then is convenient for the maintenance of reamer.

Through the arrangement of the plug, the probability of leakage of the cooling oil mist from one end, far away from the first cooling cavity, of the second cooling cavity is reduced, the flow of the cooling oil mist in the spray hole is improved, and the cooling effect of the cutting part is further improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a partial schematic view of the vicinity of the cutting portion of FIG. 1;

FIG. 3 is a schematic cross-sectional view A-A of FIG. 1;

FIG. 4 is a partial structural view of the vicinity of the cutting portion in FIG. 3;

FIG. 5 is a schematic view illustrating a connection relationship between an atomizing block and a plug according to an embodiment of the present application.

Description of reference numerals: 100. a clamping portion; 110. an oil supply hole; 200. a guide portion; 210. a groove; 220. a guide strip; 230. a first cooling chamber; 300. a cutting portion; 310. a first cutting section; 311. a first chip discharge groove; 312. a limiting part; 313. a first guide surface; 320. a second cutting segment; 321. a second chip groove; 400. a second cooling chamber; 410. a first cooling section; 420. a second cooling section; 500. an injection hole; 510. a first stage of jet orifices; 520. a second section of jet holes; 610. an atomizing block; 611. a second guide surface; 620. a gasket; 630. a plug; 640. a seal ring; 650. a connecting rod; 700. a PCD blade.

Detailed Description

The present invention is described in further detail below with reference to figures 1-5.

The embodiment of the application provides an automobile oil way valve plate reaming type oil mist cooling PCD reamer. Referring to fig. 1 and 2, the automobile oil circuit valve plate reaming type oil mist cooling PCD reamer comprises a clamping portion 100, a guide portion 200 and a cutting portion 300 which are coaxially arranged, wherein the clamping portion 100 is mounted on a main shaft. The guide portion 200 is integrally formed at an end of the clamping portion 100 away from the spindle, and the diameter of the guide portion 200 is smaller than that of the clamping portion 100. The guide portion 200 has a plurality of spiral grooves 210 formed on an outer circumferential surface thereof, so that a plurality of spiral guide bars 220 are formed on the guide portion 200. The cutting part 300 comprises a first cutting segment 310 and a second cutting segment 320, the diameter of the first cutting segment 310 is equal to that of the guide part 200, and the first cutting segment 310 is integrally formed at one end of the guide part 200 far away from the clamping part 100; the diameter of the second cutting segment 320 is smaller than that of the first cutting segment 310, and the second cutting segment 320 is integrally formed at one end of the guide portion 200 away from the clamping portion 100. A first chip groove 311 is formed in the outer peripheral surface of the first cutting section 310, a second chip groove 321 is formed in the outer peripheral surface of the second cutting section 320, and the PCD blade 700 is welded to the side wall of the first chip groove 311 and the side wall of the second chip groove 321 on the same side.

When a workpiece is cut, the reamer rotates around the axis of the reamer under the driving action of the main shaft and simultaneously feeds towards the workpiece along the length direction of the reamer; the PCD cutter 700 on the second cutting section 320 contacts with the workpiece and performs primary cutting on the workpiece, then the PCD cutter 700 on the first cutting section 310 contacts with the workpiece and performs secondary cutting on the workpiece, then the guide portion 200 extends into the workpiece, the outer circumferential surface of the guide strip 220 abuts against the inner wall of the workpiece, and then the reamer is guided.

Referring to fig. 3, an oil supply hole 110 is coaxially formed in the clamping portion 100, and the oil supply hole 110 communicates with an oil jet on the main shaft. The guide portion 200 is coaxially provided with a first cooling cavity 230, the diameter of the first cooling cavity 230 is smaller than that of the oil supply hole 110, and the first cooling cavity 230 is communicated with the oil supply hole 110. The cutting portion 300 is coaxially opened with a second cooling cavity 400, the first cooling cavity 400 is a first cooling section 410 on the first cutting portion 300, and the second cooling cavity 400 is a second cooling section 420 on the second cutting portion 300. The diameter of the first cooling section 410 is smaller than that of the first cooling cavity 230, so that a limiting part 312 is formed at one end of the cutting part 300 close to the guide part 200, and the first cooling section 410 is communicated with the first cooling cavity 230; the diameter of the second cooling section 420 is smaller than that of the first cooling section 410, and the second cooling section 420 communicates with the first cooling section 410.

Referring to fig. 2 and 3, the cutting segment is provided with an injection hole 500, and the injection hole 500 includes a first segment injection hole 510 and a second segment injection hole 520. The number of the first stage injection holes 510 is the same as the number of the first flute 311, one first flute 311 corresponds to one first stage injection hole 510, one end of the first stage injection hole 510 communicates with the first flute 311, the other end communicates with the first cooling stage 410, and one end of the first injection hole 500 near the first cooling stage 410 is inclined toward the first cooling chamber 230. The number of the second stage injection holes 520 is the same as that of the second junk slots 321, one second junk slot 321 corresponds to one second stage injection hole 520, one end of the second stage injection hole 520 is communicated with the second junk slot 321, the other end is communicated with the second cooling stage 420, and one end of the second injection hole 500 close to the second cooling stage 420 is inclined toward the first cooling chamber 230.

Referring to fig. 3 to 5, an atomizing block 610 and a sealing gasket 620 are inserted into the first cooling chamber 230, and the cross section of the atomizing block 610 is circular. The diameter of the atomizing block 610 is smaller than the diameter of the first cooling chamber 230, and the diameter of the atomizing block 610 is larger than the diameter of the first cooling section 410. The limiting part 312 is provided with a first tapered guide surface 313, one end of the atomizing block 610 close to the first cooling section 410 is provided with a second tapered guide surface 611, and the first guide surface 313 and the second guide surface 611 are parallel. The gasket 620 is interposed between the atomizing block 610 and the stopper 312, the gasket 620, and the atomizing block 610 are sequentially abutted.

Referring to fig. 3 to 5, an oil inlet is formed at one end of the atomizing block 610 close to the first cooling chamber 230, a plurality of oil outlets are formed at one end of the atomizing block 610 close to the first cooling section 410, the oil outlets are communicated with the oil inlet, and the sectional areas of the oil outlets are smaller than the sectional areas of the oil inlets.

Referring to fig. 3 to 5, a plug 630 and a sealing ring 640 are coaxially inserted into the second cooling section 420, the sealing ring 640 is sleeved on the outer circumferential surface of the plug 630, and the outer circumferential surface of the sealing ring 640 is abutted against the inner circumferential surface of the second cooling section 420. The plug 630 is disposed at an end of the second cooling section 420 away from the first cooling chamber 230, such that the second section injection hole 520 can communicate with the first cooling section 410 through the second cooling section 420. The end of the plug 630 close to the atomizing block 610 is in threaded connection with a connecting rod 650, and the end of the connecting rod 650 far away from the plug 630 is in threaded connection with the atomizing block 610.

When the reamer is used, cooling oil is sprayed into the oil supply hole 110 from the main shaft and then flows into the first cooling cavity 230, and the cooling oil cools the support part; then, the cooling oil flows into the atomizing block 610 through the oil inlet, the cooling oil forms a cooling oil mist under the action of the oil outlet when flowing out of the atomizing block 610, part of the cooling oil mist passes through the first cooling section 410 and the first section of spray holes 510 and is finally sprayed out from the first chip discharge slot 311, and the rest of the cooling oil passes through the second cooling section 420 and the second section of spray holes 520 and is finally sprayed out from the second chip discharge slot 321. Thus, the cooling oil can be fully contacted with the inner wall of the first cooling cavity 230, the cooling effect of the guide part 200 is improved, and the probability that the guide part 200 is blocked in a workpiece due to thermal expansion is reduced; and simultaneously ensures the cooling effect of the cutting section.

When the reamer is maintained, pressure is applied to the plug 630 from the end of the second cooling section 420 far away from the first cooling section 410, so that the plug 630 and the atomizing block 610 slide towards the oil supply hole 110, and then the plug 630 and the atomizing block 610 can be taken out from the oil supply hole 110, so as to clean the atomizing block 610. If the atomizing block 610 is damaged, the atomizing block 610 is detached from the connecting rod 650, and then a new atomizing block 610 is installed on the connecting rod 650, so that the plug 630 can be reused, and the utilization rate of the plug 630 is improved.

The implementation principle of this application embodiment a car oil circuit valve plate reaming formula oil mist cooling PCD reamer is:

when cutting a workpiece, the reamer is driven by the main shaft to rotate around its axis and simultaneously feed toward the workpiece along its longitudinal direction, and the cooling oil is sprayed from the main shaft into the oil supply hole 110.

The cooling oil flows into the first cooling chamber 230 from the oil supply hole 110, thereby cooling the support portion; then, the cooling oil flows into the atomizing block 610 through the oil inlet, the cooling oil forms a cooling oil mist under the action of the oil outlet when flowing out of the atomizing block 610, part of the cooling oil mist passes through the first cooling section 410 and the first section of spray holes 510 and is finally sprayed out from the first chip discharge slot 311, and the rest of the cooling oil passes through the second cooling section 420 and the second section of spray holes 520 and is finally sprayed out from the second chip discharge slot 321.

The PCD cutter 700 of the second cutting segment 320 is brought into contact with the workpiece to perform primary cutting on the workpiece, the cooling oil mist ejected from the second segment ejection hole 520 cools the second cutting segment 320, then the PCD cutter 700 of the first cutting segment 310 is brought into contact with the workpiece to perform secondary cutting on the workpiece, the cooling oil mist ejected from the first segment ejection hole 510 cools the first cutting segment 310, then the guide portion 200 is inserted into the workpiece, and the outer circumferential surface of the guide bar 220 abuts against the inner wall of the workpiece to guide the reamer.

Because the cooling oil is in a liquid state in the first cooling cavity 230, the cooling oil can be in full contact with the inner wall of the first cooling cavity 230, the cooling effect of the guide part 200 is improved, and the probability that the guide part 200 is blocked in a workpiece due to thermal expansion is reduced; and the cooling oil is in a mist state from the first-stage injection holes 510 and the second-stage injection holes 520, ensuring the cooling effect of the cutting stage.

The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims

1. The automobile oil way valve plate reaming type oil mist cooling PCD reamer is characterized by comprising a clamping part (100), a guide part (200) and a cutting part (300), wherein a PCD blade (700) is mounted on the cutting part (300), an oil supply hole (110) is formed in the clamping part (100), a first cooling cavity (230) is formed in the guide part (200), and the first cooling cavity (230) is communicated with the oil supply hole (110); a second cooling cavity (400) is formed in the cutting part (300), and the second cooling cavity (400) is communicated with one end, away from the oil supply hole (110), of the first cooling cavity (230);

an atomizing block (610) penetrates through the first cooling cavity (230), an oil inlet is formed in one end, close to the oil supply hole (110), of the atomizing block (610), a plurality of oil outlets are formed in the other end of the atomizing block (610), the oil outlets are communicated with the oil inlet, the sectional area of the oil outlets is smaller than that of the oil inlet, an injection hole (500) is formed in the cutting portion (300), and one end of the injection hole (500) is communicated with the second cooling cavity (400).

2. The automotive oil circuit valve plate reaming type oil mist cooling PCD reamer as claimed in claim 1, wherein: the cross sections of the first cooling cavity (230) and the second cooling cavity (400) are circular, the diameter of the second cooling cavity (400) is smaller than that of the first cooling cavity (230), and a limiting part (312) is formed at one end, close to the guide part (200), of the cutting part (300).

3. The automotive oil way valve plate reaming type oil mist cooling PCD reamer as claimed in claim 2, wherein: atomizing piece (610) with be provided with sealed pad (620) between spacing portion (312), the one end of sealed pad (620) with atomizing piece (610) butt, the other end with spacing portion (312) butt.

4. The automotive oil way valve plate reaming type oil mist cooling PCD reamer as claimed in claim 3, wherein: the limiting part (312) is close to one end face of the first cooling cavity (230) and is a first guide surface (313), the first guide surface (313) is a conical surface, a second guide surface (611) is arranged on the atomizing block (610), the second guide surface (611) is also a conical surface, the first guide surface (313) is parallel to the second guide surface (611), one end of the sealing gasket (620) is abutted to the first guide surface (313), and the other end of the sealing gasket is abutted to the second guide surface (611).

5. The automotive oil circuit valve plate reaming type oil mist cooling PCD reamer as claimed in claim 4, wherein: the cross-section of atomizing piece (610) is circular setting, just the diameter of atomizing piece (610) is less than the diameter of first cooling chamber (230), the diameter of oil feed hole (110) is not less than the diameter of first cooling chamber (230).

6. The automotive oil circuit valve plate reaming type oil mist cooling PCD reamer as claimed in any one of claims 1 to 5, wherein: the second cooling cavity (400) extends completely through the cutting portion (300).

7. The automotive oil way valve plate reaming type oil mist cooling PCD reamer as claimed in claim 6, wherein: a plug (630) penetrates through the second cooling cavity (400), the outer peripheral surface of the plug (630) is abutted to the inner wall of the second cooling cavity (400), and the plug (630) is arranged at one end, far away from the first cooling cavity (230), of the second cooling cavity (400).

8. The automotive oil way valve plate reaming type oil mist cooling PCD reamer as claimed in claim 7, wherein: the outer peripheral surface of the plug (630) is sleeved with a sealing ring (640), and the outer peripheral surface of the sealing ring (640) is abutted to the inner peripheral surface of the second cooling cavity (400).

9. The automotive oil way valve plate reaming type oil mist cooling PCD reamer as claimed in claim 7, wherein: the end, close to atomizing piece (610), of end cap (630) is connected with connecting rod (650), the one end that connecting rod (650) kept away from end cap (630) with atomizing piece (610) is connected.

10. The automotive oil way valve plate reaming type oil mist cooling PCD reamer as claimed in claim 9, wherein: one end of the connecting rod (650) is in threaded connection with the atomizing block (610), and the other end of the connecting rod (650) is in threaded connection with the plug (630).