阅读说明：本技术 一种精密零件内孔加工用车削刀具 (Turning tool for machining inner hole of precision part ) 是由 高连新 蒋勋 于 2019-12-03 设计创作，主要内容包括：本发明公开了一种精密零件内孔加工用车削刀具,包括底座、刀座和刀套,所述底座的上方设置有刀座,且刀座的前后两侧设置有地脚螺栓,所述刀座的上端设置有螺纹孔,且螺纹孔的内侧设置有定位螺栓,所述定位螺栓的上端设置有转动槽,所述刀座的内侧设置有刀套,且刀套的内部设置有空腔,所述刀套的左端设置有出水口,且出水口的上端设置有进水口,所述刀套的内侧设置有刀杆,且刀杆的左端设置有刀头,所述刀头的上方设置有垫片,且垫片的上方设置有刀片。该精密零件内孔加工用车削刀具,与现有的普通车削刀具相比,通过定位螺栓等零部件,减少刀杆的震动,提高了车削精度,同时,冷水流经刀套内部空腔,吸收了刀具的热量,使得刀具寿命延长。(The invention discloses a turning tool for machining an inner hole of a precision part, which comprises a base, a tool apron and a tool sleeve, wherein the tool apron is arranged above the base, foundation bolts are arranged on the front side and the rear side of the tool apron, a threaded hole is formed in the upper end of the tool apron, a positioning bolt is arranged on the inner side of the threaded hole, a rotating groove is formed in the upper end of the positioning bolt, the tool sleeve is arranged on the inner side of the tool apron, a cavity is formed in the tool sleeve, a water outlet is formed in the left end of the tool sleeve, a water inlet is formed in the upper end of the water outlet, a tool bar is arranged on the inner side of the tool sleeve, a tool bit is arranged at the left end of the tool bar. This turning cutter is used in processing of precision part hole compares with current ordinary turning cutter, through spare parts such as set bolt, reduces the vibrations of cutter arbor, has improved the turning precision, and simultaneously, the inside cavity of knife pouch has been absorbed to cold water flow through for the cutter life-span extension.)

1. The utility model provides a precision parts is turning cutter for hole processing, includes base (1), blade holder (10) and broach shell (15), its characterized in that: a tool apron (10) is arranged above the base (1), foundation bolts (13) are arranged on the front side and the rear side of the tool apron (10), a threaded hole (8) is formed in the upper end of the tool apron (10), a positioning bolt (12) is arranged on the inner side of the threaded hole (8), a rotating groove (11) is formed in the upper end of the positioning bolt (12), a tool sleeve (15) is arranged on the inner side of the tool apron (10), a cavity (16) is formed in the tool sleeve (15), a water outlet (17) is formed in the left end of the tool sleeve (15), a water inlet (9) is formed in the upper end of the water outlet (17), a tool bar (7) is arranged on the inner side of the tool sleeve (15), a tool bit (2) is arranged at the left end of the tool bar (7), a gasket (14) is arranged above the tool bit (2), a tool bit (3) is arranged above the gasket (14), a compression bolt, and an anti-rotation bolt (6) is arranged at the rear of the right side of the compression bolt (4), and a pressing plate (5) is arranged at the rear of the anti-rotation bolt (6).

2. The turning tool for machining the inner hole of the precision part as claimed in claim 1, wherein: an integrated structure is formed between the base (1) and the tool apron (10), and the inner surface of the tool apron (10) is attached to the outer surface of the tool sleeve (15).

3. The turning tool for machining the inner hole of the precision part as claimed in claim 1, wherein: the positioning bolts (12) respectively penetrate through the cutter holder (10) and the cutter bar (7), and the positioning bolts (12) are arranged at equal intervals along the horizontal direction.

4. The turning tool for machining the inner hole of the precision part as claimed in claim 1, wherein: the compression bolt (4) penetrates through the blade (3), the gasket (14) and the tool bit (2) respectively, and the side face of the gasket (14) is attached to the side face of the tool bit (2).

5. The turning tool for machining the inner hole of the precision part as claimed in claim 1, wherein: the pressing plate (5) is in threaded connection with the cutter head (2), and the lower surface of the pressing plate (5) is attached to the upper surface of the blade (3).

6. The turning tool for machining the inner hole of the precision part as claimed in claim 1, wherein: the cutter bar (7) penetrates through the interior of the cutter sleeve (15), and the cavity (16) is distributed in the cutter sleeve (15) in a U shape.

Technical Field

The invention relates to the technical field of lathe machining, in particular to a turning tool for machining an inner hole of a precision part.

Background

The tool is an important tool indispensable for cutting machining, and whether the tool is a common machine tool or an advanced numerical control machine tool, a machining center and a flexible manufacturing system, the cutting machining can be completed only by the tool, the development of the tool has an important influence on improving the productivity and the machining quality, the tool material, the tool structure and the geometric shape are three elements determining the cutting performance of the tool, wherein the performance of the tool material plays a critical role, and the tool is a tool for cutting machining in mechanical manufacturing and is also called a cutting tool.

Because the hole lathe tool utilizes the centre gripping part of cutter arbor to install on lathe saddle, so cutter arbor part and cutting part are unsettled when the finish machining rotational speed is higher relatively, under the circumstances that the allowance of finish machining is not much left, the cutter arbor rigidity difference can appear, vibrate greatly, the hole surface of processing out produces the ripple easily, influences the hole precision, can not be fine satisfies people's user demand, to above-mentioned circumstances, carries out technical innovation on current turning tool basis.

Disclosure of Invention

The invention aims to provide a turning tool for machining an inner hole of a precision part, and aims to solve the problems that the common inner hole turning tool provided in the background technology is arranged on a lathe tool rest by utilizing a clamping part of a tool bar, so that the tool bar part and the cutting part are suspended, when the finish machining rotating speed is relatively high and the finish machining allowance is not large, the tool bar has poor rigidity and large vibration, the surface of the machined inner hole is easy to generate ripples, and the precision of the inner hole is influenced, so that the use requirement of people cannot be well met.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a turning cutter is used in processing of precision part hole, includes base, blade holder and broach shell, the top of base is provided with the blade holder, and both sides are provided with rag bolt around the blade holder, the upper end of blade holder is provided with the screw hole, and the inboard of screw hole is provided with positioning bolt, positioning bolt's upper end is provided with the rotation groove, the inboard of blade holder is provided with the broach shell, and the inside of broach shell is provided with the cavity, the left end of broach shell is provided with the delivery port, and the upper end of delivery port is provided with the water inlet, the inboard of broach shell is provided with the cutter arbor, and the left end of cutter arbor is provided with the tool bit, the top of tool bit is provided with the gasket, and the top of gasket is provided with the blade, the top of blade is provided with clamp bolt, and clamp bolt.

Preferably, an integrated structure is formed between the base and the cutter holder, and the inner surface of the cutter holder is attached to the outer surface of the cutter sleeve.

Preferably, the positioning bolts respectively penetrate through the cutter holder and the cutter bar, and the positioning bolts are arranged at equal intervals along the horizontal direction.

Preferably, the compression bolt penetrates through the blade, the gasket and the cutter head respectively, and the side surface of the gasket is attached to the side surface of the cutter head.

Preferably, the pressing plate is in threaded connection with the cutter head, and the lower surface of the pressing plate is attached to the upper surface of the blade.

Preferably, the cutter bar penetrates through the inside of the cutter sleeve, and the cavity is distributed in the cutter sleeve in a U shape.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the cutter bar is fixed through the arrangement of the cutter bar, the threaded hole, the cutter holder, the rotating groove and the positioning bolt, the central axis of the threaded hole in the cutter bar is coincided with the central axis of the threaded hole in the cutter holder through adjusting the position of the cutter bar on the cutter holder, the tool is inserted into the rotating groove, the tool is rotated, the positioning bolt is screwed down, the cutter bar and the cutter sleeve are fixed in the cutter holder, and the vibration of the cutter bar is reduced;

2. according to the invention, the blade is tightly pressed on the cutter head through the arrangement of the compression bolt, the pressing plate, the anti-rotation bolt and the rotation groove, the tool is inserted into the rotation groove, the tool is rotated, the compression bolt, the pressing plate and the anti-rotation bolt are screwed down, the blade is tightly pressed on the cutter head, meanwhile, the anti-rotation bolt not only can compress the blade, but also can prevent the blade from rotating due to the reaction force of a workpiece when the blade turns an inner circle, so that the cutting precision is not influenced;

3. according to the invention, the temperature of the cutter is reduced and the service life of the cutter is prolonged by arranging the water inlet, the cutter sleeve, the cavity and the water outlet, cold water is injected into the cavity inside the cutter sleeve from the water inlet through the water pipe, flows from left to right from the cavity above the inner side of the cutter sleeve, flows to the right end, flows into the cavity below the inner side of the cutter sleeve through the connecting hole, flows from right to left, carries out heat exchange with the cutter bar through the cutter sleeve, and finally, generated hot water flows out through the water outlet.

Drawings

FIG. 1 is a schematic top view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic view of a front view of a half-section structure of the present invention.

In the figure: 1. a base; 2. a cutter head; 3. a blade; 4. a hold-down bolt; 5. pressing a plate; 6. an anti-rotation bolt; 7. a cutter bar; 8. a threaded hole; 9. a water inlet; 10. a tool apron; 11. a rotating groove; 12. positioning the bolt; 13. anchor bolts; 14. a gasket; 15. a knife sheath; 16. a cavity; 17. and (7) a water outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a turning tool for machining an inner hole of a precision part comprises a base 1, a tool apron 10 and a tool sleeve 15, wherein the tool apron 10 is arranged above the base 1, foundation bolts 13 are arranged on the front side and the rear side of the tool apron 10, an integrated structure is formed between the base 1 and the tool apron 10, the inner surface of the tool apron 10 is attached to the outer surface of the tool sleeve 15, a threaded hole 8 is formed in the upper end of the tool apron 10, a positioning bolt 12 is arranged on the inner side of the threaded hole 8, the positioning bolt 12 penetrates through the tool apron 10 and the tool bar 7 respectively, the positioning bolts 12 are arranged at equal intervals along the horizontal direction, the tool bar 7 is fixed through the arrangement of the tool bar 7, the threaded hole 8, the tool apron 10, a rotating groove 11 and the positioning bolt 12, the position of the tool bar 7 on the tool apron 10 is adjusted, the central axis of the threaded hole 8 on the tool bar, the tool is rotated, the positioning bolt 12 is screwed down, and the cutter bar 7 and the cutter sleeve 15 are fixed in the cutter holder 10, so that the vibration of the cutter bar 7 is reduced;

the upper end of the positioning bolt 12 is provided with a rotating groove 11, the inner side of the tool apron 10 is provided with a tool sleeve 15, a cavity 16 is arranged in the tool sleeve 15, the tool bar 7 penetrates through the tool sleeve 15, the cavity 16 is distributed in the tool sleeve 15 in a U shape, the temperature of the tool is reduced through the arrangement of the water inlet 9, the tool sleeve 15, the cavity 16 and the water outlet 17, the service life of the tool is prolonged, cold water is injected into the cavity 16 in the tool sleeve 15 from the water inlet 9 through a water pipe, the cold water flows from the cavity 16 above the inner side of the tool sleeve 15 from left to right and flows to the right end, flows into the cavity 16 below the inner side of the tool sleeve 15 through a connecting hole, then flows from right to left, carries out heat exchange with the tool bar 7 through the tool sleeve 15, and finally generated hot water flows out through the water outlet 17;

a water outlet 17 is arranged at the left end of the knife sleeve 15, a water inlet 9 is arranged at the upper end of the water outlet 17, a knife bar 7 is arranged at the inner side of the knife sleeve 15, a knife head 2 is arranged at the left end of the knife bar 7, a gasket 14 is arranged above the knife head 2, a blade 3 is arranged above the gasket 14, a compression bolt 4 is arranged above the blade 3, an anti-rotation bolt 6 is arranged behind the right side of the compression bolt 4, the compression bolt 4 respectively penetrates through the blade 3, the gasket 14 and the knife head 2, the side surface of the gasket 14 is attached to the side surface of the knife head 2, a pressing plate 5 is arranged behind the anti-rotation bolt 6, the pressing plate 5 is in threaded connection with the knife head 2, the lower surface of the pressing plate 5 is attached to the upper surface of the knife 3, the knife 3 is tightly pressed on the knife head 2 through the arrangement of the compression bolt 4, the pressing plate 5, the anti-rotation bolt 6, the rotary tool is screwed down by the compression bolt 4, the pressing plate 5 and the anti-rotation bolt 6, the blade 3 is tightly pressed on the tool bit 2, the anti-rotation bolt 6 can not only compress the blade 3, but also prevent the blade 3 from rotating due to the reaction force of a workpiece when the blade 3 is turned inside, and the cutting precision is not affected.

The working principle is as follows: when the turning tool for machining the inner hole of the precision part is used, firstly, the cutter sleeve 15 is placed into the cutter holder 10, then the cutter bar 7 is inserted into the cutter sleeve 15, the positions of the cutter bar 7 and the cutter sleeve 15 on the cutter holder 10 are adjusted, so that the central axes of the threaded holes 8 on the cutter bar 7 and the cutter sleeve 15 are coincident with the central axis of the threaded hole 8 on the cutter holder 10, a tool is inserted into the rotating groove 11, the positioning bolt 12 is rotated down, so that the cutter bar 7 and the cutter sleeve 15 are fixed in the cutter holder 10, the vibration of the cutter bar 7 is reduced, the cutter is placed into a workpiece for turning the inner hole, cold water is injected into a cavity 16 inside the cutter sleeve 15 from the water inlet 9 through a water pipe, the cold water flows from the cavity 16 above the inner side of the cutter sleeve 15 from left to right and flows to the right end, the cold water flows into the cavity 16 below the inner side of the cutter sleeve 15 through the connecting hole and flows from right to left, finally, the, the working principle of the turning tool for machining the inner hole of the precision part is shown.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.