阅读说明：本技术 一种切削刀头 (Cutting tool bit ) 是由 张�杰 付晓钟 于 2021-09-27 设计创作，主要内容包括：本发明属于切削刀头技术领域,具体的说是一种切削刀头,通过将套状刀座固定在车床上,用刀座上的按钮控制其内部卡扣,用刀座上的拉杆控制其内部气孔的打开和封闭,换刀时只配合卡扣和气孔将刀具拔出和插入,此固定方式由于刀体完全包裹在套状刀座内部且刀体表面贴合套状刀座内壁可以很好的传递和抵消掉切削产生的径向力和径向抖动,避免了刀具在切削过程中可能产生的轴向位移。(The invention belongs to the technical field of cutting tool bits, and particularly relates to a cutting tool bit, wherein a sleeve-shaped tool apron is fixed on a lathe, a button on the tool apron is used for controlling an internal buckle, a pull rod on the tool apron is used for controlling an internal air hole to be opened and closed, and the tool is pulled out and inserted only by matching the buckle and the air hole during tool changing.)

1. A cutting insert characterized by: the cutting tool comprises a blade (1), wherein a tool bit (2) is arranged below the blade (1), and the blade (1) is welded in a tool slot of the tool bit (2); the tail of the tool bit (2) is provided with a tool body (3), the tool bit (2) is fixedly connected with the tool body (3), and the tool bit (2) and the tool body (3) jointly form a main body part of the turning tool; the tail part of the cutter body (3) is provided with an axial convex shaft (4), and the convex shaft (4) is a part of the cutter body (3); the upper surface of the convex shaft (4) is provided with a triangular bulge (5); a sleeve-shaped tool apron (6) is arranged outside the tool body (3), the tool body (3) is inserted into the sleeve-shaped tool apron (6) and fixed, and the sleeve-shaped tool apron (6) is fixedly connected to a lathe; a triangular buckle (7) is arranged on the front inner wall of a triangular bulge (5) on the surface of an axial convex shaft (4) at the tail part of a cutter body (3) in the sleeve-shaped cutter holder (6), a first spring (8) is arranged on the upper part of the triangular buckle (7), one end of the first spring (8) is fixedly connected with the upper end of the triangular buckle (7), and the other end of the first spring (8) is fixedly connected with the inside of the sleeve-shaped cutter holder (6); an air hole (14) is formed in the sleeve-shaped cutter holder (6) at the bottom of the convex shaft (4).

2. A cutting insert according to claim 1, wherein: a warping rod (9) is arranged on the right side of the triangular buckle (7), one end of the warping rod (9) is rotatably connected with the upper end of the triangular buckle (7) through a pin, a round hole (10) is formed in the middle of the warping rod (9), and the round hole (10) is rotatably connected with the inner part of the sleeve-shaped tool apron (6) through a pin; the other end of the warping rod (9) is provided with a pressing sheet (11), and the other end of the warping rod (9) is rotatably connected with the side part of the pressing sheet (11) through a pin.

3. A cutting insert according to claim 2, wherein: the improved structure is characterized in that a long shaft (12) is arranged above the pressing sheet (11), the lower end of the long shaft (12) is fixedly connected with the upper surface of the pressing sheet (11), a button (13) is arranged at the upper end of the long shaft (12), and the upper end of the long shaft (12) is fixedly connected with the bottom of the button (13).

4. A cutting insert according to claim 1, wherein: the improved cutter holder is characterized in that a hemispherical air plug (15) is arranged on the right side of the air hole (14), a second spring (16) is arranged on the right side of the air plug (15), the right side of the air plug (15) is fixedly connected with one end of the second spring (16), the hemispherical side of the air plug (15) is abutted against the air hole (14) under the action of the elastic force of the second spring (16), and the other end of the second spring (16) is fixedly connected with the inner portion of the sleeve-shaped cutter holder (6).

5. A cutting insert according to claim 4, wherein: the air plug (15) is made of rubber materials.

6. A cutting insert according to claim 4, wherein: no. two spring (16) and shell form blade holder (6) junction middle part are equipped with style of calligraphy wall hole (19), style of calligraphy wall hole (19) middle part is equipped with pull rod (17), pull rod (17) one end is cylindrical and gas stopper (15) right side bottom fixed connection, pull rod (17) other end is a style of calligraphy card and a style of calligraphy wall hole (19) inside, pull rod (17) are located a style of calligraphy wall hole (19) outside and are equipped with pull ring (18), pull ring (18) and pull rod (17) terminal fixed connection.

Technical Field

The invention belongs to the technical field of cutting tool bits, and particularly relates to a cutting tool bit.

Background

The cutting tool bit plays a vital role in the field of metal cutting as a necessity for lathe machining, the general cutting tool bit and the tool body are integrated, the tool body is fixed on the tool apron through a bolt pressing block, a cutting part of the tool bit is contacted with a workpiece to generate cutting force to cut the workpiece in the cutting process, and the tool body and the tool apron are fixed to offset radial force generated by cutting.

When high accuracy lathe work is being processed, the lathe chuck is high-speed rotatory, and the cutting force that produces when work piece and cutter contact is big, and the processing feed volume is little, and process time is long, and traditional bolt briquetting cutter fixed mode only compresses tightly fixedly to the handle of a knife end of cutter, may produce the vibration under long-time big cutting force effect, and the precision that not only seriously influences cutting process still aggravates the wearing and tearing to the cutter.

In view of the above, in order to overcome the technical problems, the invention designs and develops a cutting tool bit.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the cutting tool bit provided by the invention can greatly reduce the time for tool changing, is convenient for workers to change tools, reduces the working time and improves the efficiency, and meanwhile, because the positions of the top points of the tool tips of different standard tool bits are the same after the different standard tool bits are fixed on the sleeve-shaped tool apron, the tool bit does not need to be reset, a large number of steps in the machining process are omitted, and errors caused by different positioning after tool changing are avoided.

The invention provides a cutting tool bit, which comprises a blade, wherein a tool bit is arranged below the blade, and the blade is welded in a tool bit tool groove; the tail part of the tool bit is provided with a cutter body, the tool bit is fixedly connected with the cutter body, and the tool bit and the cutter body jointly form the main part of the turning tool; the tail part of the cutter body is provided with an axial convex shaft which is a part of the cutter body; the upper surface of the convex shaft is provided with a triangular bulge; the cutter body is fixedly inserted into the sleeve-shaped cutter holder, and the sleeve-shaped cutter holder is fixedly connected to a lathe; a triangular buckle is arranged on the inner wall of the triangular protrusion front part on the surface of the axial convex shaft at the tail part of the cutter body in the sleeve-shaped cutter holder, a first spring is arranged on the upper part of the triangular buckle, one end of the first spring is fixedly connected with the upper end of the triangular buckle, and the other end of the first spring is fixedly connected with the inside of the sleeve-shaped cutter holder; and air holes are formed in the sleeve-shaped cutter holder at the bottom of the convex shaft.

Preferably, a raising rod is arranged on the right side of the triangular buckle, one end of the raising rod is rotatably connected with the upper end of the triangular buckle through a pin, a round hole is formed in the middle of the raising rod, and the round hole is rotatably connected with the inner part of the sleeve-shaped tool apron through a pin; the other end of the warping rod is provided with a pressing sheet, and the other end of the warping rod is rotatably connected with the side part of the pressing sheet through a pin.

Preferably, a long shaft is arranged above the pressing sheet, the lower end of the long shaft is fixedly connected with the upper surface of the pressing sheet, a button is arranged at the upper end of the long shaft, and the upper end of the long shaft is fixedly connected with the bottom of the button.

Preferably, the air hole right side is equipped with hemispherical air plug, the air plug right side is equipped with No. two springs, the air plug right side and No. two spring one end fixed connection, the hemispherical one side of air plug supports the air hole under the effect of No. two spring elastic forces, No. two spring other ends and the inside fixed connection of shell form blade holder.

Preferably, the air plug is made of rubber materials.

Preferably, a linear wall hole is formed in the middle of the joint of the second spring and the sleeve-shaped cutter holder, a pull rod is arranged in the middle of the linear wall hole, one end of the pull rod is fixedly connected with the bottom of the right side of the air plug in a cylindrical mode, the other end of the pull rod is a linear clamp and the inside of the linear wall hole, the pull rod is located on the outer side of the linear wall hole and is provided with a pull ring, and the pull ring is fixedly connected with the tail end of the pull rod.

The invention has the following beneficial effects:

the invention provides a cutting tool bit, which is closely attached to the inner wall of a sleeve-shaped tool apron through the surface of a tool body and is adsorbed and fixed under the action of atmospheric pressure.

Drawings

The invention will be further explained with reference to the drawings.

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

FIG. 2 is a top view of the turning tool of the present invention;

FIG. 3 is a cross-sectional view of the present invention after the turning tool and the sleeve-shaped tool holder are assembled;

FIG. 4 is an enlarged view of a portion of the triangular clasp at position A of FIG. 3 in accordance with the present invention;

FIG. 5 is a partial enlarged view of the button and internal connections at B in FIG. 3 according to the present invention;

FIG. 6 is an enlarged view of a portion of the gas lock at C of FIG. 3 in accordance with the present invention;

FIG. 7 is a view of the vent of the present invention in the closed position, shown in FIG. 3D;

FIG. 8 is a view of the vent of the present invention in the air inlet position of FIG. 3D;

in the figure: the cutter comprises a blade 1, a cutter head 2, a cutter body 3, a convex shaft 4, a triangular protrusion 5, a sleeve-shaped cutter holder 6, a triangular buckle 7, a first spring 8, a tilting rod 9, a round hole 10, a pressing sheet 11, a long shaft 12, a button 13, an air hole 14, an air plug 15, a second spring 16, a pull rod 17, a pull ring 18 and a straight-line-shaped wall hole 19.

Detailed Description

The technical means, the creation features, the achievement purposes and the effects of the invention are easy to understand, and the invention is further explained by combining the specific embodiments.

The invention provides a cutting tool bit, which comprises a blade 1, wherein a tool bit 2 is arranged below the blade 1, and the blade 1 is welded in a tool slot of the tool bit 2; the tail part of the tool bit 2 is provided with a tool body 3, the tool bit 2 and the tool body 3 are fixedly connected, and the tool bit 2 and the tool body 3 jointly form the main body part of the turning tool; the tail part of the cutter body 3 is provided with an axial convex shaft 4, and the convex shaft 4 is a part of the cutter body 3; the upper surface of the convex shaft 4 is provided with a triangular bulge 5; the cutter body 3 is externally provided with a sleeve-shaped cutter holder 6, the cutter body 3 is inserted into the sleeve-shaped cutter holder 6 and fixed, and the sleeve-shaped cutter holder 6 is fixedly connected to a lathe; a triangular buckle 7 is arranged on the front inner wall of a triangular bulge 5 on the surface of an axial convex shaft 4 at the tail part of a cutter body 3 in the sleeve-shaped cutter holder 6, a first spring 8 is arranged on the upper part of the triangular buckle 7, one end of the first spring 8 is fixedly connected with the upper end of the triangular buckle 7, and the other end of the first spring 8 is fixedly connected with the inside of the sleeve-shaped cutter holder 6; an air hole 14 is arranged inside the sleeve-shaped cutter holder 6 at the bottom of the convex shaft 4.

When a worker needs to replace a tool, the corresponding mechanism is pressed to enable the triangular buckle 7 to move upwards to release a locking state, the worker holds the tool bit 2 to slowly pull out the whole tool, the air hole 14 slowly admits air in the pulling-out process, after an old tool is pulled out, the triangular buckle 7 locking release mechanism is released, the triangular buckle 7 also moves downwards under the action of the elastic force of the spring 8 to return to the locking state, a new tool is slowly inserted into the sleeve-shaped tool apron 6, the convex shaft 4 of the tool body 3 is aligned with the groove in the sleeve-shaped tool apron 6, the air in the sleeve-shaped tool apron 6 rises due to the reduced air pressure of the space, the air is forced out from the air hole 14, the triangular buckle 7 moves upwards when the right side of the triangular bulge 5 on the upper surface of the convex shaft 4 abuts against the left side of the triangular buckle 7, and when the top of the triangular bulge 5 on the upper surface of the convex shaft 4 is translated to the right side of the lower end of the triangular buckle 7, the triangular buckle 7 moves downwards under the action of the elastic force of the spring 8, and the right side of the triangular bulge 5 abuts against the right side of the triangular bulge 5 The left side is locked, and because the air in the sleeve-shaped tool apron 6 is extruded and exhausted by the tool body 3, the tool is adsorbed in the sleeve-shaped tool apron 6 under the action of the atmospheric pressure, and is further locked and fixed, because a certain group of high-precision lathe is mostly used for finish machining one process, different processes are finished by different lathes, and in comparison, the tool replacement frequency is relatively low, so that the surface of the tool body 3 is tightly attached to the inner wall of the sleeve-shaped tool apron 6, and the atmospheric pressure action is continuously and effectively ensured; this fixed mode is because cutter body 3 wraps up completely inside the box-shaped blade holder 6 and the box-shaped blade holder 6 inner wall of 3 surface laminating of cutter body can be fine transmission, with the various power evenly distributed to whole handle of a knife department that cutting in-process cutter received, thereby can offset the radial force and the radial shake that the cutting produced fast, because atmospheric pressure tightly adsorbs the cutter at the box-shaped blade holder 6 inside axial displacement who has avoided the cutter probably to produce at the cutting in-process again, the vibration and the wearing and tearing of cutter have further been reduced, thereby machining precision has been improved.

As a specific embodiment of the invention, a seesaw rod 9 is arranged on the right side of the triangular buckle 7, one end of the seesaw rod 9 is rotatably connected with the upper end of the triangular buckle 7 through a pin, a round hole 10 is arranged in the middle of the seesaw rod 9, the round hole 10 is rotatably connected with the inside of the sleeve-shaped tool apron 6 through a pin, a pressing sheet 11 is arranged at the other end of the seesaw rod 9, and the other end of the seesaw rod 9 is rotatably connected with the side portion of the pressing sheet 11 through a pin.

When the pressing plate 11 moves downwards, one end of the tilting rod 9 is rotatably connected with the middle of the pressing plate 11 through the pin, one end of the tilting rod 9 moves downwards along with the pressing rod, the round hole 10 in the middle of the tilting rod 9 is rotatably connected with the inner wall of the sleeve-shaped tool apron 6 through the pin, one end of the tilting rod 9 moves downwards along with the pressing plate 11, the other end of the tilting rod moves upwards, the other end of the tilting rod 9 is rotatably connected with the triangular buckle 7 through the pin, the triangular buckle 7 moves upwards along with the other end of the tilting rod 9, the triangular buckle 7 can be unlocked upwards due to linkage of the tilting rod 9 when a force is given to the pressing plate 11, when the force disappears, the triangular buckle 7 can restore the locking state downwards due to the elastic force of the first spring 8, and the device simply realizes control over the locking state of the triangular buckle 7.

In a specific embodiment of the present invention, a long shaft 12 is disposed above the pressing sheet 11, a lower end of the long shaft 12 is fixedly connected to an upper surface of the pressing sheet 11, a button 13 is disposed at an upper end of the long shaft 12, and an upper end of the long shaft 12 is fixedly connected to a bottom of the button 13.

When the locking state of the triangular buckle 7 needs to be released, only a downward force needs to be applied to the button 13, the long shaft 12 moves downward under the action of the pressure of the button 13, at the moment, the lower end of the long shaft 12 abuts against the upper surface of the pressing sheet 11 to move downward together, when the button 13 is released, the first spring 8 applies a downward force to the triangular buckle 7, one end of the tilting rod 9 moves downward together with the triangular buckle 7, at the moment, one end, connected with the pressing sheet 11, of the tilting rod 9 drives the pressing sheet 11 to move upward, the pressing sheet 11 abuts against the long shaft 12 to move upward, and the button 13 returns to the initial position; this device links to each other inside buckle take-up unit with the external world, can operate the elasticity of buckle through pressing button 13, makes things convenient for workman's operation.

In a specific embodiment of the present invention, a hemispherical air plug 15 is disposed on the right side of the air hole 14, a second spring 16 is disposed on the right side of the air plug 15, the right side of the air plug 15 is fixedly connected to one end of the second spring 16, the hemispherical side of the air plug 15 abuts against the air hole 14 under the action of the elastic force of the second spring 16, and the other end of the second spring 16 is fixedly connected to the inside of the sleeve-shaped tool holder 6.

When the cutter inserts shell form blade holder 6, 6 inside air of shell form blade holder are compressed, when inside atmospheric pressure is greater than No. two spring 16 elasticity, 6 inside gas of shell form blade holder can push up the hemispherical air plug 15 in 14 right sides of open air hole and outwards discharge, when the cutter inserts 6 inside of shell form blade holder completely, inside and outside atmospheric pressure is balanced, air plug 15 can support gas hole 14 under the effect of No. two spring 16 elasticity, avoid the outside air to get into, the cutter can't extract shell form blade holder 6 under the effect of outside atmospheric pressure this moment, this device has guaranteed that the cutter can insert 6 insides of shell form blade holder, and guarantee that the cutter can't extract after inserting 6 inside shell form blade holders.

In one embodiment of the present invention, the air plug 15 is made of rubber.

The material has good sealing performance, can effectively prevent external air from entering the interior of the sleeve-shaped tool apron 6, and ensures that the tool cannot be pulled out under the action of external atmospheric pressure.

As a specific embodiment of the present invention, a linear wall hole 19 is formed in the middle of the joint of the second spring 16 and the sleeve-shaped tool holder 6, a pull rod 17 is arranged in the middle of the linear wall hole 19, one end of the pull rod 17 is cylindrical and is fixedly connected with the bottom of the right side of the air plug 15, the other end of the pull rod 17 is a linear clamp and is arranged inside the linear wall hole 19, a pull ring 18 is arranged on the pull rod 17 and is located outside the linear wall hole 19, and the pull ring 18 is fixedly connected with the tail end of the pull rod 17.

When a cutter needs to be replaced, the pull ring 18 is pulled out, the pull ring 18 and the pull rod 17 are fixedly connected, the pull rod 17 can move outwards along with the pull ring 18, the round end of the pull rod 17 is fixedly connected with the air plug 15, the air plug 15 moves outwards along with the pull rod 17 by overcoming the elastic force of the second spring 16, the blocked air hole 14 is opened, air can enter the sleeve-shaped cutter seat 6, one side of the pull rod 17, which is close to the pull ring 18, is in a straight line shape and is clamped in the middle of the straight line-shaped wall hole 19, the straight line-shaped part of the pull rod 17 moves outwards along the straight line-shaped wall hole 19 in the outward movement process of the pull ring 18, when the straight line-shaped part of the pull rod 17 completely moves outside the straight line-shaped wall hole 19, the straight line-shaped part of the pull rod 17 can be clamped outside the straight line-shaped wall hole 19 by rotating the pull ring 18, so that the air plug 15 cannot return to the original position to block the air hole 14 under the elastic force of the second spring 16, and the air hole 14 is in a continuous opening state, when the cutter is completely pulled out, the pull ring 18 is rotated to enable the linear part of the pull rod 17 to return to the linear wall hole 19, at the moment, the pull rod 17 moves inwards under the action of the elasticity of the second spring 16, the air plug 15 returns to the air hole 14 to block the air hole 14 again, and the device ensures that outside air enters the sleeve-shaped cutter holder 6, balances the inside and outside atmospheric pressure in the process of pulling out the cutter, and enables the cutter to be pulled out.

The working principle is as follows: when a worker needs to change a tool, firstly, the air hole 14 is adjusted to be in an air inlet state, the pull ring 18 is pulled out, the pull ring 18 and the pull rod 17 are fixedly connected, the pull rod 17 moves outwards along with the pull ring 18, the round end of the pull rod 17 is fixedly connected with the air plug 15, the air plug 15 moves outwards along with the pull rod 17 against the elastic force of the second spring 16, the blocked air hole 14 is opened, air can enter the sleeve-shaped tool apron 6, one side of the pull rod 17, which is close to the pull ring 18, is in a straight shape and is clamped in the middle of the straight-shaped wall hole 19, the straight-shaped part of the pull rod 17 moves outwards along the straight-shaped wall hole 19 in the outward movement process of the pull ring 18, when the straight-shaped wall hole 19 of the pull rod 17 completely moves outwards, the straight-shaped part of the pull rod 17 can be clamped outside the straight-shaped wall hole 19 by rotating the pull ring 18, and the air plug 15 cannot return to the original position to block the air hole 14 under the elastic force of the second spring 16, the air hole 14 is in a state of continuously opening, then the button 13 is pressed, the long shaft 12 moves downwards under the action of the pressure of the button 13, the lower end of the long shaft 12 abuts against the upper surface of the pressing sheet 11 and moves downwards together, when the pressing sheet 11 moves downwards, one end of the tilting rod 9 is rotatably connected with the middle of the pressing sheet 11 through a pin, one end of the tilting rod 9 moves downwards along with the pressing rod, and because the round hole 10 in the middle of the tilting rod 9 is rotatably connected with the inner wall of the sleeve-shaped tool apron 6 through a pin, when one end of the tilting rod 9 moves downwards along with the pressing sheet 11, the other end of the tilting rod 9 moves upwards, and because the other end of the tilting rod 9 is rotatably connected with the triangular buckle 7 through a pin, the triangular buckle 7 moves upwards along with the other end of the tilting rod 9 to release the locking state, at the moment, the old cutter can be pulled out from the inner part of the sleeve-shaped tool apron 6, after the cutter is completely pulled out, the pull ring 18 is rotated to enable the linear part of the pull rod 17 to return to the linear wall hole 19, at the moment, the pull rod 17 moves inwards under the action of the elasticity of the second spring 16, the air plug 15 returns to the position of the air hole 14 to block the air hole 14 again, the triangular buckle 7 of the button 13 is loosened to restore the locking state downwards under the action of the elasticity of the first spring 8, one end of the tilting rod 9 moves downwards along with the triangular buckle 7, one end of the tilting rod 9 connected with the pressing sheet 11 drives the pressing sheet 11 to move upwards, the pressing sheet 11 pushes against the long shaft 12 to move upwards, the button 13 returns to the initial position, a new cutter is slowly inserted into the sleeve-shaped cutter holder 6, the convex shaft 4 of the cutter body 3 is partially aligned with the groove in the sleeve-shaped cutter holder 6, the air in the sleeve-shaped cutter holder 6 rises due to the reduced air pressure of the space, when the internal air pressure is greater than the elasticity of the second spring 16, the air in the sleeve-shaped cutter holder 6 pushes the hemispherical air plug 15 on the right side of the air hole 14 to escape outwards, and when the right side of the triangular bulge 5 on the upper surface of the convex shaft 4 pushes against the left side of the triangular buckle 7 to move upwards, when protruding 5 tops of 4 upper surface triangles of protruding axle translated to triangle-shaped buckle 7 lower extreme right sides, triangle-shaped buckle 7 can make its right side withstand triangle-shaped protruding 5 left sides and accomplish the locking under the effect of spring 8 elasticity down, when the cutter inserts nested blade holder 6 inside completely, inside and outside atmospheric pressure is balanced, air plug 15 can support gas pocket 14 under the effect of spring 16 elasticity No. two, avoid the outside air to get into, the cutter can't extract nested blade holder 6 under the effect of outside atmospheric pressure this moment, cutter after the tool changing is accomplished tightly is adsorbed in nested blade holder 6 inside and cutter body 3 surface and the sealed laminating of 6 inner walls of nested blade holder just as an organic whole can perfectly deal with cutting force and the shake that produces when high accuracy cutting is processed because the atmospheric pressure effect, the stability of cutting process has been improved.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.