CN214321887U

CN214321887U - Boring mechanism

Info

Publication number: CN214321887U
Application number: CN202120442419.8U
Authority: CN
Inventors: 高东海; 章娇凤
Original assignee: Zhangchen Heavy Industry Suzhou Co ltd
Current assignee: Zhangchen Heavy Industry Suzhou Co ltd
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2021-10-01
Anticipated expiration: 2031-03-01

Abstract

The invention relates to a boring mechanism, which comprises a machine tool and a boring rod-shaped boring cutter arranged on the machine tool, wherein the machine tool is horizontally extended and mutually vertical, and comprises a machine tool frame, a main shaft gearbox arranged on the machine tool frame and a main shaft chuck arranged on the main shaft gearbox, a slide rail extending along the longitudinal direction is arranged on the machine tool frame, the machine tool also comprises a slide carriage arranged on the slide rail and sliding along the longitudinal direction, a workpiece frame arranged on the slide carriage and sliding along the transverse direction, and a thimble tailstock arranged on the slide rail and sliding along the longitudinal direction, the workpiece frame is used for clamping a workpiece, the boring rod-shaped boring cutter is clamped on the main shaft chuck, and the thimble tailstock is used for abutting against and supporting the boring rod-shaped boring cutter; when the boring mechanism provided by the invention is used for processing a workpiece with a slender hole, the strength of the boring cutter can be effectively improved, so that the tool consumption can be increased, the cutting processing efficiency can be improved, the situations of cutter back-off, cutter vibration and the like can be avoided, the service life of a blade is prolonged, and the processing precision can be improved.

Description

Boring mechanism

Technical Field

The invention relates to a boring mechanism.

Background

When the traditional mode is used for boring and turning, a workpiece is clamped on a lathe spindle chuck to rotate, and a cutter moves in a feeding mode. When the common boring bar-shaped boring cutter is used for machining a boring hole by a vehicle, the boring cutter is limited by conditions for a workpiece with longer length and smaller aperture, the cutter bar of the boring cutter is required to be made to be slender, and the strength of the cutter bar of the boring cutter is very low; therefore, the back tool consumption during cutting cannot be too large, and sometimes two or even three or four tools need to be moved back and forth to finish the finish machining turning allowance, so that the cutting efficiency is very low.

Moreover, the common boring bar-shaped boring cutter can not avoid the occurrence of the cutter shaking phenomenon, the surface roughness of the processed hole wall is high and not smooth enough, even turning processing can not be carried out due to the cutter shaking phenomenon, the blade of the boring cutter is very easy to break, the cutter is replaced back and forth, the cutter setting size is frequent, the working efficiency is very low, and an operator is very irritated.

In addition, because the cutter arbor is slender, intensity is low, very easily produces "back-off" phenomenon and takes place, and the finish machining size is very difficult to guarantee, can't reach at all to the processing requirement that the precision is slightly high, and some slender holes's slenderness ratio is too big even, has surpassed the limit of cutter, can't use traditional turning technology to process.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a boring mechanism.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides a boring mechanism, boring mechanism includes the lathe, install the boring bar shape boring cutter on the lathe, the lathe has horizontal extension and mutually perpendicular's horizontal and vertical, the lathe includes the lathe frame, locate the main shaft gearbox on the lathe frame, install the main shaft chuck on the main shaft gearbox, the slide rail along longitudinal extension has on the lathe frame, the lathe still includes along longitudinal sliding locate the carriage apron on the slide rail, locate the work rest on the carriage apron along lateral sliding, locate the thimble tailstock on the slide rail along longitudinal sliding, the work rest is used for the clamping work piece, boring bar shape boring cutter clamping is on the main shaft chuck, the thimble tailstock is used for contradicting boring bar shape boring cutter and supports it.

Preferably, the boring bar-shaped boring cutter comprises a cutter bar and a detachable blade arranged on the cutter bar, the cutter bar comprises a cutter handle and a rod body, the blade is detachably arranged in the middle of the rod body, and a supporting positioning hole is formed in the center of the end face of one end part, far away from the cutter handle, of the rod body.

Preferably, the rod body is provided with a mounting hole for mounting the blade.

Preferably, the boring bar-shaped boring tool further comprises a compression screw for press-fixing the insert in the mounting hole from one side of the insert.

Preferably, the mounting hole is obliquely provided with respect to a length extending direction of the pole body, and the mounting hole penetrates through the pole body.

Preferably, the boring bar-shaped boring cutter further includes an adjustment screw threadedly coupled with a rear end of the mounting hole.

Preferably, the shank is integrally formed with the shank body.

Preferably, the tool shank and the shank body are arranged separately.

Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:

the boring mechanism adopts a lathe, and is different from the traditional lathe in that a tool rest for clamping a tool on the traditional lathe is replaced by a workpiece frame for clamping a workpiece, a spindle chuck does not clamp the workpiece any more, but the spindle chuck is changed into the clamping tool, and an ejector pin tailstock at the tail of the lathe is not used for supporting the workpiece, but is used for supporting the boring tool, so that when the boring mechanism is used for processing the workpiece with the slender hole, the strength of the boring tool can be effectively improved, the tool consumption can be increased, the cutting processing efficiency can be improved, the situations of tool relieving, tool shaking and the like can be avoided, the service life of a blade can be prolonged, and the processing precision can be improved; in addition, for the slender holes which cannot be machined by adopting the traditional equipment and process, the boring mechanism can smoothly realize hole machining. The boring mechanism effectively solves the problems of various bulges and difficult effective solution in boring processing in the prior art, can greatly improve the processing efficiency of enterprises, and greatly improves the economic benefits of the enterprises.

Drawings

FIG. 1 is a schematic front view of the machine tool of the present invention;

FIG. 2 is a side view of a conventional boring bar-shaped boring tool in the prior art;

FIG. 3 is a schematic side view of the boring bar-shaped boring tool according to the present invention;

FIG. 4 is a schematic side view of the boring bar-shaped boring tool (the tool shank and the bar body are separately arranged) according to the present invention;

wherein: a1, a machine tool frame; a2, a main shaft gearbox; a3, spindle chuck; a4, a slide rail; a5, a slide box; a6, workpiece rack; a7, thimble tailstock; 10. a rod body; 11. a blade; 100. supporting the positioning hole; 101. a compression screw; 102. an adjusting screw; 20. a knife handle.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples.

As shown in fig. 1 to 4, the boring mechanism comprises a machine tool and a boring bar-shaped boring tool mounted on the machine tool, wherein the machine tool has a horizontal direction and a longitudinal direction which extend horizontally and are perpendicular to each other, the machine tool comprises a machine frame a1, a spindle gearbox a2 arranged on the machine frame a1, and a spindle chuck a3 mounted on the spindle gearbox a2, the machine frame a1 is provided with a slide rail a4 which extends along the longitudinal direction, the machine tool further comprises a slide carriage a5 which slides along the longitudinal direction and is arranged on the slide rail a4, a workpiece frame a6 which slides along the horizontal direction and is arranged on the slide carriage a5, and a thimble a7 which slides along the longitudinal direction and is arranged on the slide rail a4, the workpiece frame a tailstock 6 is used for clamping a workpiece, the boring bar-shaped boring tool is clamped on the spindle chuck a3, and the thimble tailstock a7 is used for abutting against and supporting the boring bar-shaped boring tool. The boring mechanism is particularly suitable for processing elongated hole workpieces, when the boring mechanism is used for processing, the workpiece to be processed performs feed motion (including feeding cutting motion along the longitudinal direction and feeding motion along the transverse stepping), and the boring bar-shaped boring cutter performs rotary motion.

The boring mechanism adopts a lathe, and is different from the traditional lathe in that a tool rest for clamping a tool on the traditional lathe is replaced by a workpiece frame a6 for clamping a workpiece, a main shaft chuck a3 does not clamp the workpiece any more but changes the tool into a clamping tool, and an ejector pin tailstock a7 at the tail of the lathe is not used for supporting the workpiece but is used for supporting the boring tool, so that the boring mechanism can effectively improve the strength of the boring tool when the boring mechanism is used for processing the workpiece with the elongated hole.

The invention improves the common lathe, namely the original tool rest is replaced by a workpiece frame a6 (the workpiece frame a6 can be a chuck, a vice and the like, or special fixtures designed according to different specific appearances of workpieces), the improvement is very simple and easy to realize, the improvement cost is very low, and the brought results are huge.

In this example, the boring bar-shaped boring tool includes a tool bar and a detachable blade 11 disposed on the tool bar, the tool bar includes a tool holder 20 and a bar body 10, the blade 11 is detachably disposed in the middle of the bar body 10, and a supporting positioning hole 100 is disposed in the center of an end surface of one end of the bar body 10 away from the tool holder 20.

The tool holder 20 and the rod body 10 are integrally formed, a mounting hole (the mounting hole is precisely machined by wire cutting) for mounting the blade 11 is formed in the rod body 10, the mounting hole is obliquely arranged relative to the length extending direction of the rod body 10, and the mounting hole penetrates through the rod body 10. The boring bar-shaped boring tool further includes a compression screw 101 for press-fixing the insert 11 in the mounting hole from one side of the insert 11, and an adjustment screw 102 threadedly coupled to a rear end of the mounting hole.

The compression screw 101 can fix the blade 11, the adjusting screw 102 abuts against the rear end of the blade 11, the cutting depth of the blade 11 can be finely adjusted, the cutting depth of the cutter can be finely adjusted conveniently by screwing the adjusting screw 102, the machining size requirement can be met, and the feeding amount of the blade 11 can be calculated according to the lead of the adjusting screw 102. The adjusting screw 102 is pressed against the blade 11 from the rear of the blade 11, so that the problem of dimension error caused by displacement of the blade 11 in the cutting process can be solved, and the method is suitable for the condition that the size of the cutter bar is relatively large and the position of the adjusting screw 102 is installed.

In addition, in the boring cutter of the present invention, the cutter handle 20 and the rod body 10 may also be separately arranged (see fig. 3), the separate arrangement is mainly applied to the case that the hole diameter of the hole to be processed is small and the cutter bar is thin, because the cutter bar is thin and there is not enough space for installing the adjusting screw 102, the cutter handle 20 and the rod body 10 are separately arranged, so that the cutter handle 20 and the rod body can realize relative displacement, so that the cutter handle and the rod body are eccentric, and finally the tool-cutting amount of the blade 11 is finely adjusted.

When the boring cutter is used for machining, one end of the boring cutter is fixed and the other end of the boring cutter is supported, so that most of cutting force is perfectly offset, the rigidity of the cutter during cutting is greatly improved, three cutting factors are reasonably selected under the support of the tailstock, higher machining rotating speed can be selected during cutting, the back cutting amount and the feeding speed are increased, and the cutting efficiency is remarkably improved. The cutter shaking phenomenon cannot occur, and the machined surface roughness can well meet the finish machining requirement; because the situations such as cutter vibration and the like do not occur, the phenomenon that the blade is broken is solved, the cutter can reach the normal service life, the processing efficiency is improved, and the labor intensity of an operator for changing the cutter back and forth and adjusting the size is reduced.

In conclusion, the boring mechanism adopts the lathe, and is different from the traditional lathe in that the tool rest of the clamping tool on the traditional lathe is replaced by the workpiece frame for clamping the workpiece, the spindle chuck does not clamp the workpiece any more but changes the clamping tool into a tool, and the ejector pin tailstock at the tail part of the lathe is not used as a support workpiece but used for supporting the boring tool, so that when the boring mechanism of the invention is used for processing the workpiece with the elongated hole, the strength of the boring tool can be effectively improved, the tool consumption can be increased, the cutting processing efficiency can be improved, the situations of tool relieving, tool shaking and the like can be avoided, the service life of a blade can be prolonged, and the processing precision can be improved; in addition, for the slender holes which cannot be machined by adopting the traditional equipment and process, the boring mechanism can smoothly realize hole machining. The boring mechanism effectively solves the problems of various bulges and difficult effective solution in boring processing in the prior art, can greatly improve the processing efficiency of enterprises, and greatly improves the economic benefits of the enterprises.

The present invention has been described in detail in order to enable those skilled in the art to understand the invention and to practice it, and it is not intended to limit the scope of the invention, and all equivalent changes and modifications made according to the spirit of the present invention should be covered by the present invention.

Claims

1. A boring mechanism comprises a machine tool and a boring bar-shaped boring cutter arranged on the machine tool, and is characterized in that: the machine tool is provided with a horizontal direction and a vertical direction which extend horizontally and are vertical to each other, the machine tool comprises a machine tool frame, a main shaft gearbox arranged on the machine tool frame, and a main shaft chuck arranged on the main shaft gearbox, wherein a slide rail extending along the vertical direction is arranged on the machine tool frame, the machine tool further comprises a slide carriage arranged on the slide rail along the vertical direction, a workpiece frame arranged on the slide carriage along the horizontal direction in a sliding manner, and a thimble tailstock arranged on the slide rail along the vertical direction in a sliding manner, the workpiece frame is used for clamping a workpiece, the boring bar-shaped boring cutter is clamped on the main shaft chuck, and the thimble tailstock is used for abutting against the boring bar-shaped boring cutter and supporting the boring bar-shaped boring cutter.

2. The boring mechanism according to claim 1, characterized in that: the boring bar-shaped boring cutter comprises a cutter bar and a detachable blade arranged on the cutter bar, the cutter bar comprises a cutter handle and a rod body, the detachable blade is arranged in the middle of the rod body, and a supporting positioning hole is formed in the center of the end face of one end part of the rod body, which is far away from the cutter handle.

3. The boring mechanism according to claim 2, characterized in that: the rod body is provided with a mounting hole for mounting the blade.

4. The boring mechanism of claim 3, wherein: the boring bar-shaped boring tool further comprises a compression screw which presses and fixes the blade in the mounting hole from one side of the blade.

5. The boring mechanism of claim 3, wherein: the mounting hole is obliquely arranged relative to the length extending direction of the rod body, and the mounting hole penetrates through the rod body.

6. The boring mechanism of claim 5, wherein: the boring bar-shaped boring cutter further comprises an adjusting screw in threaded connection with the rear end of the mounting hole.

7. The boring mechanism according to claim 2, characterized in that: the handle and the rod body are integrally formed.

8. The boring mechanism according to claim 2, characterized in that: the knife handle and the rod body are arranged in a split mode.