CN203281894U - Turning Tool Structure and Turning Blades - Google Patents

Abstract

The utility model discloses a turning tool structure and a turning blade thereof, which mainly comprises a turning tool bar and a turning blade; the top surface of one end of the turning tool rod is sunken with an accommodating area, the turning tool piece is arranged in the accommodating area of the turning tool rod and is provided with two cutting parts, the two cutting parts are symmetrically positioned at opposite positions from the central axis of the turning tool piece to two sides, the top surface end edge of each cutting part is provided with a straight flat cutting end edge, two side edges of the flat cutting end edge are respectively connected with an arc cutting end edge extending in a preset arc curvature, the two arc cutting end edges are symmetrical to each other, and the tail end of each arc cutting end edge is connected with a beveled cutting end edge extending to the axis position in an inclined straight line manner; with the help of the structure, the utility model discloses cut out an annular that has the plane tank bottom to promote the close-fitting effect between the body of rod and foreign object.

Description

Turning Tool Structure and Turning Blades

technical field

The utility model relates to a turning tool, in particular to a turning tool structure capable of cutting an annular groove with a plane groove bottom and a turning blade thereof. the

Background technique

As shown in Figure 1, a general screwdriver consists of a metal shaft 2 with a shape 1 at the front end, and a handle (not shown) is sheathed on the metal shaft 2 to increase the holding time. Comfort and improved grip stability when applying force. the

However, in order to increase the bonding effect between the metal shaft 2 and the grip, generally an annular groove 3 (as shown in Figure 1 ) will be cut out on the metal shaft 2 by turning (as shown in Figure 1 ), but with the current In terms of the turning method and the structure of the turning tool that can be used, an arc-shaped annular groove 3 can only be turned on the metal shaft 2, and the annular groove 3 can be clamped by the steel ball arranged in the handle to increase the metal weight. The tight fitting effect between the shaft 2 and the grip. However, the arc-shaped ring groove 3 and the ball-shaped steel ball often cannot effectively produce a tight-fitting effect, thus resulting in poor tight-fitting effect between the metal shaft 2 and the grip. the

In view of this, the designer aimed at the many shortcomings and inconveniences caused by the imperfect design of the above-mentioned turning tool structure, and deeply conceived, and actively researched and improved the trial production to develop and design this case. the

Utility model content

The purpose of this utility model is to provide a turning tool structure and its turning blade, which can turn an arc-shaped ring groove with a flat groove bottom on a rod body, so as to improve the tight fit effect between the rod body and foreign objects. the

In order to achieve the above object, the solution of the utility model is:

A turning tool structure comprising:

A turning tool bar, the top surface of one end thereof is recessed to have an accommodating area; a turning blade is arranged in the accommodating area of the turning tool bar, and the turning tool blade has two cutting parts, and the two cutting parts are located symmetrically on each other. At the relative position to both sides of the central axis of the turning blade, the top edge of each cutting portion has a straight cut end edge, and the two sides of the straight cut end edge are respectively connected with a predetermined arc curvature extending and the two arc-cut edges are symmetrical to each other, and the end of each arc-cut edge is connected with a beveled edge extending to the axis position in an oblique straight line.

The accommodating area of the turning tool holder is a space surrounded by a bottom wall and a side wall connected to one side of the bottom wall and extending upward. the

A limiting groove is recessed on the side wall of the accommodating area of the above-mentioned turning tool holder, for accommodating and limiting the cutting portion of the turning tool blade. the

The turning tool structure also includes a connecting piece; the bottom wall of the accommodating area of the turning tool bar has a screw hole; the central axis position of the turning blade has a through hole; the connecting piece is inserted into the through hole , and abut against the turning blade, and be screwed with the screw hole of the turning tool bar. the

The through hole of the above-mentioned turning blade is a countersunk hole; the connecting piece is a countersunk screw. the

The outer surface of the above-mentioned turning blade defines a top surface, a bottom surface and a peripheral surface connected between the top surface and the bottom surface, and the peripheral surface is gradually tapered from the connection with the top surface to the connection with the bottom surface. The outer diameter shows a state of being wide at the top and narrow at the bottom. the

The above-mentioned turning insert has a chip relief groove on the top surface of each cutting portion, and each chip relief groove is formed by gradually recessing the flat cutting end edge toward the direction of the central axis to the position of the bevel cutting end edge. the

A turning blade with a turning tool structure, which includes: two cutting parts, the two cutting parts are symmetrically located on opposite sides of the central axis of the turning blade, and the top edge of each cutting part has a The two side edges of the straight-cut end edge are respectively connected with an arc-cut end edge extending in a predetermined arc curvature, and the two arc-cut end edges are mutually symmetrical, and the ends of each arc-cut end edge are connected with a A chamfered end edge that extends in a straight, diagonal line to the location of the axis. the

The outer surface of the above-mentioned turning blade defines a top surface, a bottom surface and a peripheral surface connected between the top surface and the bottom surface, and the peripheral surface is gradually tapered from the connection with the top surface to the connection with the bottom surface. The outer diameter shows a state of being wide at the top and narrow at the bottom. the

Each of the above-mentioned cutting parts has a chip-relief groove on the top surface, and each chip-relief groove is formed by gradually recessing the flat-cut end edge toward the central axis to the position of the chamfered end edge. the

After adopting the above structure, the utility model has the following advantages:

1. Fix a metal shank with a joint shape and the turning tool structure of the present invention on a turning machine, and drive the metal shank to rotate, and then drive the turning tool structure to the radial direction of the metal shank gradually Feed so that the flat-cut end edge on a cutting part of the turning tool structure first contacts the metal rod body, and then gradually feeds a certain depth, and the arc-cut end edges located on both sides of the flat-cut end edge also begin to contact. Cutting to the metal shaft, until the predetermined depth is cut, the turning tool structure can be withdrawn, and the metal shaft can be stopped, so that the metal shaft can be formed on the metal shaft by cutting the edge of the flat cut. A ring groove with a flat groove bottom; the pressing effect between the steel ball and the steel ball can be improved by means of the flat groove bottom of the ring groove, which can not only prevent the steel ball from rolling, but also effectively improve the tightness between the steel ball and the foreign object Combine efficacy.

2. When the turning blade of the utility model is in use, one cutting part can be used for cutting, while the other cutting part is limited in the limiting groove, so as to prevent the turning blade from moving due to external force. It is also possible to turn the blade of the car after the original cutting part for cutting is worn, so that the cutting part that was originally limited in the limit groove is transferred to the cutting position, while the worn cutting part is transferred to the cutting position. In this way, not only can the turning blade be effectively combined with the turning tool holder, but also the turning blade can be used more effectively to reduce the consumption of consumables. the

3. The turning blade of the utility model is on the top surface of each cutting part, and gradually sags from the flat cutting end edge to the direction of the central axis to the position of the chamfering end edge, so that it can be formed separately on the top surface of each cutting part. There is a concave chip relief groove, so that the waste chips generated during cutting can exit smoothly, so as not to affect the cutting operation. 

Description of drawings

Fig. 1 is the perspective view of the metal shank of existing a kind of screwdriver;

Fig. 2 is the three-dimensional exploded view of a preferred embodiment of the utility model;

Fig. 3 is a perspective view of partial components of the embodiment shown in Fig. 2;

Fig. 4 is a three-dimensional combined view of the embodiment shown in Fig. 2;

Fig. 5 is a schematic diagram of the use state of the embodiment shown in Fig. 2;

Fig. 6 is a use state sectional view of the embodiment shown in Fig. 2;

Fig. 7 is a schematic diagram of the use state of the embodiment shown in Fig. 2;

Fig. 8 is a cross-sectional view of the embodiment shown in Fig. 2 in use.

Description of main component symbols

existing

Screwdriver shape 1 metal shaft 2 ring groove 3

The utility model

Turning tool structure 100 Turning tool holder 10 Accommodating area 11

Bottom wall 111 Side wall 112 Screw hole 12

Limiting groove 13 Turning blade 20 Top surface 21

Bottom surface 22 Peripheral surface 23 Cutting part 24

Flat cut edge 241 Arc cut edge 242 Beveled edge 243

Chip relief groove 244 Through hole 25 Connecting piece 30

Metal shaft 90 , plane groove bottom 91 , ring groove 92 .

Detailed ways

In order to further explain the technical solution of the utility model, the utility model is described in detail through specific examples below. the

Please refer to Fig. 2 to Fig. 8, a kind of turning tool structure 100 provided by a preferred embodiment of the present utility model, it mainly comprises a turning tool bar 10, a turning blade 20 and a connecting piece 30, wherein:

Please refer to Fig. 2 to Fig. 4, this turning tool holder 10, its adjoining end top surface is recessed to have a accommodation area 11, and this accommodation area 11 is connected by a bottom wall 111 and a side that is connected to this bottom wall 111 and goes toward. The space surrounded by the extended side wall 112; the bottom wall 111 of the accommodating area 11 of the turning tool holder 10 has a screw hole 12, and a limiting groove is recessed on the side wall 112 of the accommodating area 11 13.

Please refer to Fig. 2 to Fig. 4, this turning blade 20 is arranged in the accommodating area 11 of this turning tool holder 10, and the outer surface of this turning blade 20 can define a top surface 21, a bottom surface 22 and a The peripheral surface 23 between the top surface 21 and the bottom surface 22, and the peripheral surface 23 gradually shrinks its outer diameter from the connection with the top surface 21 to the connection with the bottom surface 22, and presents a state of being wide at the top and narrow at the bottom The turning blade 20 has two cutting portions 24, and the two cutting portions 24 are symmetrically located at relative positions on both sides with the central axis of the turning blade 20, and the top surface edge of each cutting portion 24 has a straight line The flat-cut end edge 241, the two sides of the flat-cut end edge 241 are respectively connected with an arc-cut end edge 242 extending in a predetermined arc curvature, and the two arc-cut end edges 242 are mutually symmetrical, and between the arc-cut end edges 242 The end is connected with a chamfered end edge 243 extending to the axis position in an oblique straight line; the turning blade 20 also has a through hole 25 penetrating from the top surface 21 to the bottom surface 22 at the central axis position. In this embodiment, the through hole 25 is a Spigot. the

Please refer to FIG. 2 to FIG. 4 , the connecting member 30 is used to fixedly connect the turning insert 20 to the accommodating area 11 of the turning tool holder 10 . In the present embodiment, the connecting member 30 is a countersunk screw, and the connecting member 30 penetrates through the through hole 25 on the top surface 21 of the turning blade 20, and presses against the turning blade 20 with its head, and It is screwed into the screw hole 12 of the turning tool bar 10 by its body, so that the turning blade 20 is fixedly connected in the accommodating area 11 of the turning tool bar 10, and one cutting part of the turning tool bar 20 24 is limited in the limiting groove 13 of the turning tool bar 10 to prevent the turning blade 20 from rotating due to force. the

Therefore, the above is the introduction of each component and its assembly method of the turning tool structure 100 of a preferred embodiment provided by the present invention, and then its use characteristics are introduced as follows:

First, as shown in Fig. 5 and Fig. 6, a metal shaft 90 with a joint shape and a turning tool structure 100 of the present utility model are fixed on a turning machine (not shown in the figure), and the metal rod is driven The body 90 rotates, and then drives the turning tool structure 100 to gradually feed in the radial direction of the metal shaft 90 (as shown in Figures 5 and 6), so that the flat cut end edge on a cutting part 24 of the turning tool structure 100 241 first touches on the metal shaft 90, and then gradually advances to a certain depth, and then the arc-cut end edges 242 on both sides of the flat-cut end edge 241 also start to contact and cut to the metal shaft 90 (as shown in Figure 7 and 8), until the predetermined depth is cut, the turning tool structure 100 can be withdrawn, and the metal shank 90 can be stopped, so that the metal shank 90 can be cut by the flat cutting end edge 241, And can form an annular groove 92 with flat groove bottom 91; By means of the flat groove bottom 91 of this annular groove 92, the tight effect with the steel ball can be enhanced, not only can avoid the situation that the steel ball rolls, but also can effectively To enhance the emergency combination effect with foreign objects.

In addition, in the above-mentioned embodiment, when the turning blade 20 is in use, one cutting portion 24 can be used for cutting, while the other cutting portion 24 is limited in the limiting groove 13, except that the turning blade 20 can be avoided. 20 is moved by external force, and after the original cutting part 24 used for cutting is worn out, the turning blade 20 is turned around, so that the cutting part 24 originally limited in the limiting groove 13 is transferred to the cutting position , and the cutting part 24 that produces wear is transferred to the limit groove 13; in this way, not only can the turning blade 20 be effectively combined with the turning tool holder 10, but also the turning blade 20 can be used more effectively, so that Use less consumables. the

Furthermore, as shown in Fig. 2 and Fig. 3, in the above-mentioned embodiment, the turning insert 20 is on the top surface 21 of each cutting portion 24, and is gradually depressed from the flat cutting end edge 241 to the direction of the central axis to the chamfering end edge 243, so that the top surface 21 of each cutting part 24 can be formed with recessed chip relief grooves 244, so that the waste chips generated during cutting can exit smoothly, so as to avoid affecting the cutting. Operation. the

The above-mentioned embodiments and accompanying drawings do not limit the product form and style of the present utility model, and any appropriate changes or modifications made by those skilled in the art should be regarded as not departing from the patent scope of the present utility model. the

Claims (10)

1. A turning tool structure, characterized in that, comprises: A turning tool holder, the top surface of one end of which is recessed to have an accommodating area; A turning blade is arranged in the accommodation area of the turning tool bar. The turning blade has two cutting parts. The top edge of the part has a straight cut end edge, and the two sides of the cut end edge are respectively connected with an arc cut end edge extending in a predetermined arc curvature, and the two arc cut end edges are mutually symmetrical. The end of the arc-cut end edge is connected with a bevel-cut end edge extending to the axis in an oblique straight line. 2. The turning tool structure according to claim 1, wherein the accommodating area of the turning tool holder is surrounded by a bottom wall and a side wall connected to one side of the bottom wall and extending upward. Space. 3 . The turning tool structure according to claim 2 , wherein a limiting groove is recessed on the side wall of the accommodating area of the turning tool holder for accommodating and limiting a cutting portion of the turning tool insert. 4 . 4. The turning tool structure according to claim 2, characterized in that: it also includes a connecting piece; the bottom wall of the accommodating area of the turning tool bar has a screw hole; the central axis position of the turning blade has a penetrating A through hole; the connecting piece penetrates into the through hole, abuts against the turning blade, and is screwed with the screw hole of the turning tool bar. 5 . The turning tool structure according to claim 4 , wherein: the through hole of the turning blade is a countersunk hole; the connecting member is a countersunk screw. 6. The turning tool structure according to claim 1, wherein the outer surface of the turning blade defines a top surface, a bottom surface and a peripheral surface connected between the top surface and the bottom surface, and the peripheral surface is parallel to The connection with the top surface gradually reduces its outer diameter toward the connection with the bottom surface, and presents a state of being wide at the top and narrow at the bottom. 7. The turning tool structure according to claim 6, characterized in that: the turning insert has a chip relief groove on the top surface of each cutting portion, and each chip relief groove gradually moves from the flat cutting edge to The direction of the central axis is recessed to the position of the chamfered end edge. 8. A turning blade with a turning tool structure, characterized in that it comprises: Two cutting parts, the two cutting parts are symmetrically located on the relative positions on both sides of the central axis of the turning blade, the top edge of each cutting part has a straight cut end edge, and the two cut ends of the cut end edge The side edges are respectively connected with an arc-cut end edge extending with a predetermined arc curvature, and the two arc-cut end edges are mutually symmetrical, and the end of each arc-cut end edge is connected with an oblique straight line extending to the axis position. 9. The turning blade of turning tool structure as claimed in claim 8, characterized in that: the outer surface of the turning blade defines a top surface, a bottom surface and a peripheral surface connected between the top surface and the bottom surface, the peripheral surface And the outer diameter is gradually reduced from the connection with the top surface to the connection with the bottom surface, so as to present a state of being wide at the top and narrow at the bottom. 10. The turning insert with the turning tool structure according to claim 9, characterized in that: each cutting portion has a chip relief groove on the top surface, and each chip relief groove gradually moves from the flat cutting end edge to the central axis The direction of the depression is formed at the position of the chamfered end edge.

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