CN215698496U

CN215698496U - Guide bar type high-precision PCD reamer

Info

Publication number: CN215698496U
Application number: CN202122302527.8U
Authority: CN
Inventors: 郑仲凯
Original assignee: Hangzhou Konus Precision Tool Co ltd
Current assignee: Hangzhou Konus Precision Tool Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-02-01
Anticipated expiration: 2031-09-23

Abstract

The utility model relates to a guide bar type high-precision PCD reamer, which belongs to the technical field of hole machining tools and comprises a rack, wherein a connecting rotating shaft is arranged on the rack, a reamer component which is movably inserted, embedded, connected and fixed with the connecting rotating shaft is arranged at the lower end of the connecting rotating shaft, and a cooling liquid rotary connecting sleeve which is in sealed communicated nested connection with the reamer component is arranged at the lower end of the connecting rotating shaft. The reamer component comprises a cutter head, a cutter handle frame which is connected with the connecting rotating shaft in an inserting and embedding manner is arranged between the cutter head and the connecting rotating shaft, and a positioning pin is arranged between the cutter handle frame and the cutter head. The structure has the characteristics of high structural strength, good operation stability and long service life. The problem of taper easily produced in the deep hole boring process is solved. And the roundness and the coaxiality can be kept in the processes of reaming the fine holes and reaming the broken holes.

Description

Guide bar type high-precision PCD reamer

Technical Field

The utility model relates to the technical field of hole machining tools, in particular to a guide bar type high-precision PCD reamer.

Background

When a hole is machined, a cutter works in a workpiece body, the structure and the size of the cutter are limited by the size and the depth of the hole, and the problems of chip containing, chip removal, strength, rigidity, guiding, cooling, lubricating and the like in machining need to be solved properly. The machining process cannot be seen visually, the occurrence situation is difficult to prevent in time, and the problems that the deeper the hole, the longer the cutter is suspended, the worse the rigidity is, the cutter is deformed, abraded, unstable in machining and the like are very easy to occur.

The traditional boring cutter is in a suspension state, and in order to improve the rigidity and the part processing precision, the extension of the traditional boring cutter is shortened as much as possible, the rod diameter of the traditional boring cutter is thickened, and a high-elasticity modulus material is adopted. However, the diameter and the elongation of the boring bar are limited by the bore diameter D to be processed and the required length L, so the cantilever processing boring bar has the following defects:

the rigidity is poor, and the bending is easy, so that the roundness and the straightness of the processed dimensional precision and shape precision are poor.

Secondly, the vibration is easily caused by insufficient rigidity, so that a sharp cutter cannot be used, and the quality of the processed surface is not high.

Thirdly, as known from the calculation formula of the rigidity C, in order to enhance the rigidity, a material with high elastic modulus E value is preferably selected. The hard alloy has a higher elastic modulus than heavy metals. The elastic modulus of heavy metals is higher than that of alloy steels. Therefore, only the point is different, and the boring depth limitation is different; the depth of a bore hole is generally set to be below L/D =4 by using an alloy steel boring bar, the depth of a heavy metal boring bar is set to be below L/D =7, and the depth of a hard alloy boring bar is set to be below L/D = 10.

And fourthly, during intermittent cutting, due to large fluctuation of cutting force and large vibration, the general boring cutter rod only needs to reduce the cutting amount, and is difficult to process efficiently.

The common boring method is difficult to adjust the cutter outside the production line, a trial cutting method is needed to adjust the cutter on a machine tool, the operation is troublesome, the size of the cutter is difficult to control at the upper limit of tolerance, and the service life of the cutter is difficult to prolong.

In combination with the above disadvantages, the method has the disadvantages of short service life of the cutter, high labor and time consumption and poor machining precision.

Disclosure of Invention

The utility model mainly solves the defects of poor operation stability, low structural strength and short service life in the prior art, and provides a guide bar type high-precision PCD reamer which has the characteristics of high structural strength, good operation stability and long service life. The problem of taper easily produced in the deep hole boring process is solved. And the roundness and the coaxiality can be kept in the processes of reaming the fine holes and reaming the broken holes.

The technical problem of the utility model is mainly solved by the following technical scheme:

the utility model provides a high-accuracy PCD reamer of gib formula, includes the frame, the frame on be equipped with and connect the pivot, connection pivot lower extreme be equipped with connect the pivot mutually movable insert inlay and connect fixed reamer subassembly, connection pivot lower extreme be equipped with the rotatory adapter sleeve of the coolant liquid of reamer subassembly looks sealed intercommunication formula nested connection. The reamer component comprises a cutter head, a cutter handle frame which is connected with the connecting rotating shaft in an inserting and embedding manner is arranged between the cutter head and the connecting rotating shaft, and a positioning pin is arranged between the cutter handle frame and the cutter head.

Preferably, the tool bit comprises a tool body, the front end of the tool body is provided with a plurality of PCD blades which are distributed in an equidistant annular shape and are inserted into the tool body, and the rear end of the tool body is provided with a connecting flange shaft which is fixedly connected with the tool holder through an inserted bolt.

Preferably, pressing plates are arranged between the two ends of the PCD blade and the cutter body, and double-headed screws are arranged between the lower end of the PCD blade and the cutter body.

Preferably, a tool bit cooling liquid channel communicated with the PCD blade is arranged in the tool body and the connecting flange shaft.

Preferably, the knife handle frame comprises a knife handle, the rear end of the knife handle is provided with a blind rivet which is inserted and embedded in a limiting mode with the connecting rotating shaft, the front end of the knife handle is provided with an inner hexagonal screw which is in penetrating type sleeve joint with the connecting flange shaft, and a knife handle cooling liquid channel communicated with the knife head cooling liquid channel and the cooling liquid rotary connecting sleeve is arranged in the knife handle.

Preferably, a plurality of fastening screws which are distributed in an annular shape at equal intervals and are in compression joint with the connecting flange shaft are arranged on the excircle of the front part of the cutter handle.

Preferably, a plurality of locking assemblies which are distributed in an annular shape at equal intervals and are connected with the connecting rotating shaft in an embedded manner are arranged between the connecting rotating shaft and the knife handle frame.

Preferably, the locking assembly comprises a spring, and a steel ball which is fixedly connected with the spring in an embedded manner is arranged between the spring and the knife rest.

Preferably, a lifting cylinder fixed with the frame through a bearing type flange is arranged between the upper end of the connecting rotating shaft and the frame, and a rotating motor fixed with the lifting cylinder through a flange is arranged at the upper end of the frame. The rotary motor drives the lifting cylinder, the connecting rotating shaft and the reamer assembly to rotate together, and the lifting cylinder is connected with the rotating shaft through driving to achieve up-down lifting of the reamer assembly.

The utility model can achieve the following effects:

compared with the prior art, the guide bar type high-precision PCD reamer has the characteristics of high structural strength, good operation stability and long service life. The problem of taper easily produced in the deep hole boring process is solved. And the roundness and the coaxiality can be kept in the processes of reaming the fine holes and reaming the broken holes.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic view of the reamer assembly of the present invention.

Fig. 3 is a schematic view of a cutter head according to the present invention.

Fig. 4 is a schematic view of the structure of the holder according to the present invention.

Fig. 5 is a schematic view of the construction of the locking assembly of the present invention.

In the figure: the rotary reamer comprises a rack 1, a rotary motor 2, a lifting cylinder 3, a connecting rotating shaft 4, a locking component 5, a cooling liquid rotary connecting sleeve 6, a reamer component 7, a knife handle frame 8, a positioning pin 9, a knife head 10, a knife body 11, a double-head screw 12, a PCD blade 13, a pressing plate 14, a knife head cooling liquid channel 15, a connecting flange shaft 16, a fastening screw 17, a knife handle 18, a rivet 19, a knife handle cooling liquid channel 20, an inner hexagonal screw 21, steel balls 22 and a spring 23.

Detailed Description

The technical scheme of the utility model is further specifically described by the following embodiments and the accompanying drawings.

Example (b): as shown in fig. 1-5, a guide bar type high-precision PCD reamer comprises a frame 1, a connecting rotating shaft 4 is arranged on the frame 1, a lifting cylinder 3 fixed to the frame 1 through a bearing type flange is arranged between the upper end of the connecting rotating shaft 4 and the frame 1, and a rotating motor 2 fixed to the lifting cylinder 3 through a flange is arranged at the upper end of the frame 1. The lower end of the connecting rotating shaft 4 is provided with a reamer component 7 which is movably inserted, embedded, connected and fixed with the connecting rotating shaft 4, and the lower end of the connecting rotating shaft 4 is provided with a cooling liquid rotary connecting sleeve 6 which is in sealed communicated type embedded connection with the reamer component 7. 4 locking components 5 which are distributed in an annular shape with equal intervals and are connected with the connecting rotating shaft 4 in a nested way are arranged between the connecting rotating shaft 4 and the knife handle frame 8. The locking component 5 comprises a spring 23, and a steel ball 22 which is connected and fixed with the spring 23 in an embedded manner is arranged between the spring 23 and the knife holder 8.

Reamer subassembly 7 includes tool bit 10, and tool bit 10 includes

cutter body

11, and 11 front ends of cutter body are equipped with 6 and are equidistant annular distribution and insert the PCD blade 13 of inlaying mutually with cutter body 11, all are equipped with clamp plate 14 between PCD blade 13 both ends and cutter body 11, all are equipped with double-end screw 12 between PCD blade 13 lower extreme and cutter body 11. The rear end of the cutter body 11 is provided with a connecting flange shaft 16 which is fixedly connected with the cutter handle frame 8 through an inserting bolt. A tool bit cooling liquid channel 15 communicated with the PCD blade 13 is arranged in the tool body 11 and the connecting flange shaft 16. A knife handle frame 8 which is inserted and embedded with the connecting rotating shaft 4 is arranged between the knife head 10 and the connecting rotating shaft 4, and a positioning pin 9 is arranged between the knife handle frame 8 and the knife head 10. The tool shank frame 8 comprises a tool shank 18, a rivet 19 which is limited and inserted with the connecting rotating shaft 4 is arranged at the rear end of the tool shank 18, an inner hexagonal screw 21 which is in penetrating type sleeve joint with the connecting flange shaft 16 is arranged at the front end of the tool shank 18, and a tool shank cooling liquid channel 20 which is communicated with the tool bit cooling liquid channel 15 and the cooling liquid rotary connecting sleeve 6 is arranged in the tool shank 18. The excircle of the front part of the knife handle 18 is provided with 4 fastening screws 17 which are distributed annularly at equal intervals and are in compression joint with the connecting flange shaft 16.

To sum up, the guide bar type high-precision PCD reamer has the characteristics of high structural strength, good operation stability and long service life. The problem of taper easily produced in the deep hole boring process is solved. And the roundness and the coaxiality can be kept in the processes of reaming the fine holes and reaming the broken holes.

It is obvious to a person skilled in the art that the utility model is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the essential characteristics of the utility model. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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.

In summary, the above description is only an embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the present invention.

Claims

1. The utility model provides a high-accuracy PCD reamer of gib formula, includes frame (1), its characterized in that: a connecting rotating shaft (4) is arranged on the rack (1), a reamer component (7) which is movably inserted, embedded, connected and fixed with the connecting rotating shaft (4) is arranged at the lower end of the connecting rotating shaft (4), and a cooling liquid rotary connecting sleeve (6) which is in sealed communication type embedded connection with the reamer component (7) is arranged at the lower end of the connecting rotating shaft (4); reamer subassembly (7) include tool bit (10), tool bit (10) and be connected pivot (4) between be equipped with be connected pivot (4) and insert handle frame (8) of being connected mutually, handle frame (8) and tool bit (10) between be equipped with locating pin (9).

2. The bar-guiding high precision PCD reamer of claim 1, wherein: the utility model discloses a PCD cutting tool, including tool bit (10) cutter body (11), cutter body (11) front end be equipped with a plurality of PCD blades (13) that are equidistant annular distribution and inlay mutually with tool bit (11), cutter body (11) rear end be equipped with handle frame (8) mutually insert the fixed flange axle (16) of formula bolted connection.

3. The bar-guiding high precision PCD reamer of claim 2, wherein: pressing plates (14) are arranged between the two ends of the PCD blade (13) and the cutter body (11), and double-headed screws (12) are arranged between the lower end of the PCD blade (13) and the cutter body (11).

4. The bar-guiding high precision PCD reamer of claim 2, wherein: a tool bit cooling liquid channel (15) communicated with the PCD blade (13) is arranged in the tool body (11) and the connecting flange shaft (16).

5. The bar-type high precision PCD reamer of claim 4, wherein: the utility model discloses a handle of a knife, including handle of a knife (18), handle of a knife (8) include handle of a knife (18), handle of a knife (18) rear end be equipped with be connected pivot (4) spacing mutually and insert blind rivet (19) of inlaying, handle of a knife (18) front end be equipped with flange axle (16) looks run-through socket head cap screw (21) that cup joint, handle of a knife (18) in be equipped with handle of a knife cooling liquid corridor (20) that are linked together with tool bit cooling liquid corridor (15), the rotatory adapter sleeve of coolant liquid (6).

6. The bar-guided high precision PCD reamer of claim 5, wherein: the outer circle of the front part of the knife handle (18) is provided with a plurality of fastening screws (17) which are distributed in an equidistant annular shape and are in compression joint with the connecting flange shaft (16).

7. The bar-guiding high precision PCD reamer of claim 1, wherein: a plurality of locking components (5) which are distributed annularly at equal intervals and are connected with the connecting rotating shaft (4) in a nested manner are arranged between the connecting rotating shaft (4) and the knife handle frame (8).

8. The bar-guided high precision PCD reamer of claim 7, wherein: the locking assembly (5) comprises a spring (23), and a steel ball (22) which is fixedly connected with the spring (23) in an embedded manner is arranged between the spring (23) and the handle frame (8).

9. The bar-guiding high precision PCD reamer of claim 1, wherein: the connecting device is characterized in that a lifting cylinder (3) fixed with the frame (1) in a bearing type flange connection mode is arranged between the upper end of the connecting rotating shaft (4) and the frame (1), and a rotating motor (2) fixed with the lifting cylinder (3) in a flange connection mode is arranged at the upper end of the frame (1).