CN210435388U

CN210435388U - Turning tool

Info

Publication number: CN210435388U
Application number: CN201921296778.6U
Authority: CN
Inventors: 李静
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-05-01
Anticipated expiration: 2029-08-12

Abstract

The utility model discloses a turning tool, including cutter arbor, blade and clamping mechanism, be provided with the sword groove on the cutter arbor, the blade passes through clamping mechanism installs the sword inslot of cutter arbor, the blade has vertical side and slope bottom surface, the slope bottom surface with the longitudinal feed direction of blade parallel and with the contained angle of vertical side is α, and contained angle α satisfies 70 ^ α < 90, the sword groove have with vertical side and slope bottom surface match respectively vertical lateral wall and slope diapire the utility model discloses a turning tool, simple structure, it is convenient to make, and the blade is pressed from both sides more tightly in the machining process more, can not take place to drop because of the vibration.

Description

Turning tool

Technical Field

The utility model relates to the field of machining, concretely relates to lathe tool.

Background

The mechanically clamped turning tool is one kind of turning tool with blunt blade and replaceable worn blade, and has no crack produced in the carbide blade and reduced cutter durability.

The clamping of the mechanical clamping type turning tool has the following three forms: an upward pressing type, a lateral pressing type and a cutting force clamping type. The up-press type is the most used form in machining. The three most common upper pressing structures are a bridge type pressing plate upper pressing structure, a hook type pressing plate upper pressing structure and a blade belt pressing groove upper pressing structure, however, the three upper pressing structures apply vertical pressing force above the blade, the bottom surface of the blade is positioned in a plane, no horizontal clamping force exists, and in machining vibration, the clamping mode has the risk of loosening or shifting in the horizontal direction.

SUMMERY OF THE UTILITY MODEL

For solving above technical problem, the utility model aims at providing a lathe tool sets up the slope bottom surface in the bottom of blade, sets up the slope diapire in the sword inslot of cutter arbor, makes the blade have the clamp force at horizontal direction and vertical direction under clamping mechanism's extrusion.

In order to achieve the above purpose, the present invention adopts the following technical solution.

A turning tool comprises a tool bar, a blade and a clamping mechanism, wherein the tool bar is provided with a tool slot, the blade is arranged in the tool slot of the tool bar through the clamping mechanism, the blade is provided with a vertical side surface and an inclined bottom surface, the inclined bottom surface is parallel to the longitudinal feeding direction of the blade, the included angle between the inclined bottom surface and the vertical side surface is α, and the included angle α meets the requirements that the included angle is 70 degrees & lt α & lt 90 degrees;

the pocket has vertical side walls and an inclined bottom wall that mate with the vertical side surfaces and the inclined bottom surface, respectively.

Further, the included angle α is 80 °.

Furthermore, the upper part of the tail part of the blade is provided with an inclined tail end face, the inclined tail end face is parallel to the transverse feeding direction of the blade and forms an included angle of β with the top surface of the blade, the included angle β meets the requirement that 125 degrees is larger than β degrees and smaller than 145 degrees, and the cutter groove is provided with an inclined tail wall matched with the inclined tail end face.

Further, the included angle β is 135 °.

Further, the clamping mechanism comprises a pressing block and a bolt; a pressing block mounting hole is vertically formed in the pressing block, a screw hole is formed in the upper surface of the cutter bar, and the bolt penetrates through the pressing block mounting hole and is screwed into the screw hole; the lower surface of briquetting head is provided with the pressure head, the upper surface of blade be provided with the indent that the pressure head matches.

Further, the pressure head is horizontal cylinder, just horizontal cylinder's axis with the contained angle in the longitudinal feed positive direction of blade is gamma, and contained angle gamma satisfies: gamma is more than 35 degrees and less than 55 degrees.

Further, the angle γ is 45 °.

Further, the pressing block mounting hole is a kidney-shaped hole parallel to the longitudinal feeding direction of the cutter.

Further, the section of the blade perpendicular to the transverse feeding direction of the blade is a centrosymmetric figure.

The utility model discloses technical scheme is for prior art's blade clamping mode, simple structure, and it is convenient to make, and the blade presss from both sides more tightly in the use more, can not take place to drop because of the vibration.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of a bridge press plate pressing type blade clamping mode;

FIG. 2 is a schematic view of a manner of clamping a hook-shaped pressing plate and an upward pressing type blade;

FIG. 3 is a schematic view of a pressing type blade clamping manner on a blade belt pressing groove;

fig. 4 is a schematic perspective view of the turning tool of the present invention, in which a blade is assembled to a tool bar;

fig. 5 is a schematic perspective view of a tool bar according to an embodiment of the turning tool of the present invention;

fig. 6 is a schematic perspective view of a blade according to an embodiment of the turning tool of the present invention;

fig. 7 is a front view of a blade according to an embodiment of the turning tool of the present invention;

fig. 8 is a cross-sectional view of an embodiment of a turning tool of the present invention at section C in fig. 7;

fig. 9 is a schematic perspective view of a pressing block according to an embodiment of the turning tool of the present invention;

fig. 10 is a top view of a pressing block according to an embodiment of the turning tool of the present invention.

In the above figures: 1, a cutter bar; 2, cutting blades; 201 vertical sides; 202 an inclined bottom surface; 203 inclining the tail end face; 204 pressing a groove; 3 cutter grooves; 301 vertical side walls; 302 an inclined bottom wall; 303 an inclined trailing wall; 4, briquetting; 401 pressing block mounting holes; 402, a pressure head; 5, bolts;

a, the longitudinal feeding positive direction of the blade;

b, the positive direction of transverse feeding of the blade;

α the angle between the inclined bottom of the blade and the vertical side of the blade;

β the included angle between the inclined tail end face and the blade top face;

the included angle between the central axis of the gamma horizontal cylindrical pressure head and the positive longitudinal feeding direction of the blade.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of other ways than those described herein, and those skilled in the art will be able to make similar generalizations without departing from the spirit of the invention. The invention is therefore not limited to the specific embodiments disclosed below.

Referring to fig. 1, 2 and 3, fig. 1 is a schematic view of a bridge type pressing plate upper pressing type blade clamping mode, fig. 2 is a schematic view of a hook type pressing plate upper pressing type blade clamping mode, and fig. 3 is a schematic view of a blade belt pressing groove upper pressing type blade clamping mode.

In the three upper pressing type blade clamping modes, the bottom surface of the blade is a horizontal plane, the clamping mechanism can only apply pressing force to the blade in the vertical direction, the clamping mechanism does not apply clamping force in the horizontal direction, and the blade has the risk of loosening or moving towards the open end of the cutter groove and even falling off in the vibration of machining.

Referring to fig. 4 and 5, to the above problem, the utility model provides a lathe tool, including cutter arbor 1, blade 2 and clamping mechanism, be provided with sword groove 3 on the cutter arbor 1, blade 2 passes through clamping mechanism installs in the sword groove 3 of cutter arbor 1.

Transverse feeding: feeding perpendicular to the central line of the main shaft, wherein the direction B in fig. 4 is the positive direction of transverse feeding of the blade;

longitudinal feeding: feeding parallel to the axis of the workpiece spindle, wherein the direction A in the figure 4 is the positive direction of longitudinal feeding of the blade;

referring to fig. 6 to 8, the blade 2 has a vertical side surface 201 and an inclined bottom surface 202, the inclined bottom surface 202 is parallel to the longitudinal feed direction of the blade 2 and has an included angle α with the vertical side surface 201, an included angle α satisfies 70 ° < α < 90 °, and the pocket 3 has a vertical side wall 301 and an inclined bottom wall 302 matching with the vertical side surface 201 and the inclined bottom surface 202, respectively.

In the above embodiment, since the inclined bottom surface 202 is provided at the bottom of the insert 2 and the inclined bottom wall 302 is provided in the pocket 3, the vertical clamping force acting on the top of the insert 2 is transmitted to the inclined bottom surface 202, and the reaction force of the arbor 1 is decomposed into the vertical clamping force in the vertical direction and the horizontal clamping force in the opposite direction to the lateral feeding of the insert 2, so that the more the insert 2 is clamped, the more the horizontal clamping force prevents the insert 2 from moving toward the open end of the pocket 3.

Further, it is preferred that angle α be 80 ° in practice, angle α is best tested at 80 °.

Furthermore, the upper part of the tail part of the blade 2 is provided with an inclined tail end face 203, the inclined tail end face 203 is parallel to the transverse feeding direction of the blade 2 and forms an included angle β with the top surface of the blade 2, the included angle β meets the requirements that 125 degrees is smaller than β and smaller than 145 degrees, and the knife groove 3 is provided with an inclined tail wall 303 matched with the inclined tail end face 203.

In the above embodiment, the inclined trailing end surface 203 is provided at the trailing end of the blade 2, when the blade 2 is fed in the forward longitudinal feed direction, the reverse force of the workpiece acts on the blade 2 and is transmitted to the inclined trailing end surface 203, and the reaction force of the inclined trailing wall 303 of the pocket 3 acts on the blade 2 to generate the horizontal force in the forward longitudinal feed direction and the downward vertical force, and the downward vertical force makes the blade 2 get more and more clamped.

Further, it is preferred that angle β be 135 ° in practice, angle β is tested as having an optimum value of 135 °.

Further, the clamping mechanism comprises a pressing block 4 and a bolt 5; a pressing block mounting hole 401 is vertically formed in the pressing block 4, a screw hole is formed in the upper surface of the cutter bar 1, and the bolt 5 penetrates through the pressing block mounting hole 401 and is screwed into the screw hole; the lower surface of the head of the pressing block 4 is provided with a pressing head 402, and the upper surface of the blade 2 is provided with a pressing groove 204 matched with the pressing head 402.

In the above embodiment, specifically, the clamping mechanism specifically includes the pressing block 4 and the bolt 5. The pressing block 4 is provided with a pressing block mounting hole 401, the cutter bar 1 is provided with a screw hole, and the pressing block 4 is clamped on the cutter bar 1 through a bolt 5.

Further, referring to fig. 9 and 10, preferably, the pressing head 402 is a horizontal cylinder, and an included angle γ between a central axis of the horizontal cylinder and a positive longitudinal feeding direction of the blade 2 is satisfied: gamma is more than 35 degrees and less than 55 degrees.

In the above embodiment, since the pressing head 402 is a horizontal cylinder, the central axis of the horizontal cylinder is horizontal, and the included angle between the central axis of the horizontal cylinder and the positive longitudinal feeding direction of the blade 2 is γ, accordingly, the included angle between the upper pressing groove 204 of the blade 2 and the positive longitudinal feeding direction of the blade 2 is also equal to γ. When the blade 2 is withdrawn in the direction opposite to the longitudinal feeding direction, the frictional resistance of the workpiece prevents the blade 2 from being withdrawn, at the moment, the acting force of the blade 2 is transmitted to the pressure head 402 of the pressing block 4, the acting force of the pressure head 402 on the blade 2 is decomposed into a horizontal force in the direction opposite to the transverse feeding direction and a horizontal force in the direction opposite to the longitudinal feeding direction, and the horizontal component force in the direction opposite to the transverse feeding direction and the horizontal force in the direction opposite to the longitudinal feeding direction jointly act to prevent the blade 2 from moving towards the opening end of the cutter groove and.

Further, it is preferable that the angle γ be 45 °. In practice, tests prove that gamma is 45 degrees, so that good effects can be achieved.

Further, the press block mounting hole 401 is a kidney-shaped hole parallel to the longitudinal feeding direction of the cutter.

In the above embodiment, in order to adjust the clamping force of the bolt 5, the press block mounting hole 401 is a kidney-shaped hole.

Further, the section of the blade 2 perpendicular to the transverse feeding direction of the blade 2 is a centrosymmetric figure.

In order to enable the blade 2 to be repeatedly used, the blade 2 is made into a central symmetry structure, namely, the section of the blade 2 along the direction vertical to the transverse feeding direction is a central symmetry figure, so that when one cutting edge of the blade 2 is worn, the clamping mechanism is loosened, the blade 2 is installed after rotating 180 degrees around the horizontal direction, and the blade can be used again.

Although the invention has been described in detail in this specification with reference to specific embodiments and illustrative embodiments, it will be apparent to those skilled in the art that certain changes and modifications can be made therein without departing from the scope of the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The turning tool is characterized by comprising a tool bar (1), a blade (2) and a clamping mechanism, wherein a tool groove (3) is formed in the tool bar (1), and the blade (2) is installed in the tool groove (3) of the tool bar (1) through the clamping mechanism;

the blade (2) has a vertical side surface (201) and an inclined bottom surface (202), the inclined bottom surface (202) is parallel to the longitudinal feed direction of the blade (2) and has an included angle α with the vertical side surface (201), and the included angle α satisfies 70 degrees < α < 90 degrees;

the pocket (3) has vertical side walls (301) and an inclined bottom wall (302) matching the vertical side surfaces (201) and the inclined bottom surface (202), respectively.

2. The turning tool of claim 1, wherein the included angle α is 80 °.

3. The turning tool according to claim 1, characterized in that the upper tail part of the blade (2) is provided with an inclined tail end face (203), the inclined tail end face (203) is parallel to the transverse feeding direction of the blade (2) and forms an angle β with the top surface of the blade (2), and the angle β satisfies 125 ° < β < 145 °;

the pocket (3) has an inclined trailing wall (303) matching the inclined trailing end face (203).

4. The turning tool of claim 3, wherein the included angle β is 135 °.

5. The turning tool according to claim 1, characterized in that the clamping mechanism comprises a pressing block (4) and a bolt (5);

a pressing block mounting hole (401) is vertically formed in the pressing block (4), a screw hole is formed in the upper surface of the cutter bar (1), and the bolt (5) penetrates through the pressing block mounting hole (401) and is screwed into the screw hole;

the lower surface of the head of the pressing block (4) is provided with a pressing head (402), and the upper surface of the blade (2) is provided with a pressing groove (204) matched with the pressing head (402).

6. The turning tool according to claim 5, wherein the pressing head (402) is a horizontal cylinder, and the central axis of the horizontal cylinder forms an angle γ with the positive longitudinal feeding direction of the blade (2), and the angle γ satisfies: gamma is more than 35 degrees and less than 55 degrees.

7. The turning tool of claim 6, wherein the included angle γ is 45 °.

8. The turning tool according to claim 5, wherein the compact mounting hole (401) is a kidney-shaped hole parallel to the longitudinal feed direction of the tool.

9. The turning tool according to claim 1, characterized in that the cross-section of the insert (2) perpendicular to the direction of transverse feed of the insert (2) is a centrosymmetric pattern.