PCD cutter with chip breaker groove

Abstract

The utility model discloses a PCD (Poly Crystal Diamond) cutter with chip breaker grooves, which relates to the field of cutting tools and comprises a rhombic cutter body, PCD cutter edges are fixed at two acute angles on one side of the cutter body, the chip breaker grooves are formed on the outer walls of the PCD cutter edges, a connecting ring is fixed in the middle of one side of the cutter body close to the PCD cutter edges, and the connecting ring is connected with the PCD cutter edges. The connecting ring and the mounting hole in the cutter body are coaxially arranged; according to the PCD cutter with the chip breaker groove, the cover plate is arranged, the corresponding angle limiting mechanism is arranged on the cover plate, the cover plate can completely cover the side face, close to a PCD cutter edge, of the cutter body, the PCD cutter edge can be covered and protected, the probability that the PCD cutter edge is damaged is reduced, when the cover plate is completely covered, the outer edge of the PCD cutter edge can protrude out of the periphery of the cutter body, and therefore the PCD cutter edge is prevented from being damaged. Therefore, when the whole cutter body falls, the PCD cutter edge can be protected on the side face, and the cutter edge part is prevented from being directly impacted.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of cutting tools, especially to a PCD tool with chip breaking groove. BACKGROUND

[0002] The PCD tool is a tool with a cutting edge made of polycrystalline diamond (PCD) material. In order to ensure that the chips can be broken and discontinuous during cutting, a chip breaking groove of a specific shape is provided in the cutting edge part. In daily use, the tool needs to be carefully stored to protect the cutting edge from damage.

[0003] In the prior art, in order to achieve the effect of protecting the cutting edge, a cylindrical milling cutter or drill bit is sleeved with a protective sleeve at the cutting edge part, and the protective sleeve is positioned at the cutting edge part by friction or buckle structure, so that the protection of the cutting edge is realized, and damage to the cutting edge is avoided. However, the VB type PCD turning tool arranged in a rhombus shape is currently stored by being placed in a plastic box with a plurality of compartments due to its special shape. This storage method has the problems of large storage space occupation and inability of the tool to be protected individually. SUMMARY

[0004] In order to make up for the deficiencies of the prior art, the purpose of the utility model is to provide a PCD tool with chip breaking groove which saves storage space and allows individual tools to be protected individually.

[0005] In order to solve the problems of the prior art, the technical scheme of the utility model is as follows:

[0006] A PCD tool with chip breaking groove, comprising a tool body arranged in a rhombus shape, two acute corners of one side of the tool body are each fixed with a PCD cutting edge, a chip breaking groove is formed on the outer wall of the PCD cutting edge, a connecting ring is fixed at the middle of the side of the tool body close to the PCD cutting edge, the connecting ring is coaxially arranged with the mounting hole on the tool body, and the inner diameter of the connecting ring is greater than the inner diameter of the mounting hole;

[0007] A cover plate is rotatably mounted on the outer side of the connecting ring, one side of the cover plate is attached to the outer wall of the side of the tool body close to the connecting ring, and the cover plate can completely cover the side of the tool body close to the connecting ring;

[0008] A limiting assembly is arranged on the cover plate to limit the angle of the cover plate on the outer side of the connecting ring.

[0009] Preferably, the cover plate is arranged in a rhombus shape with the same shape as the tool body, and the outer contour size of the cover plate is greater than the outer contour size of the tool body.

[0010] Preferably, the cover plate is rotatably connected to the outer wall of the connecting ring through a bearing.

[0011] Preferably, the cover plate is sleeved on the outer side of the connecting ring through the perforation formed in the middle part thereof, and a protruding edge is formed on the outer wall of the connecting ring away from the one end of the cutter body, and the cover plate is limited between the protruding edge and the cutter body.

[0012] Preferably, the limiting assembly comprises first limiting protrusions symmetrically formed on the outer edge part of the cover plate near the one side of the cutter body, and the first limiting protrusions are arranged in a hemispherical shape, and the two first limiting protrusions can simultaneously abut on any two adjacent outer vertical surfaces on the cutter body.

[0013] Preferably, the limiting assembly comprises a friction surface formed on the inner wall of the perforation, and the outer wall of the connecting ring is in interference fit with the inner wall of the friction surface.

[0014] Preferably, the limiting assembly comprises four arc-shaped grooves formed on the inner wall of the perforation at equal angles with the axis of the perforation as the center, the outer wall of the connecting ring is provided with second limiting protrusions, the second limiting protrusions are arranged in an arc-shaped protruding shape matched with the outer shape of the arc-shaped grooves, and the second limiting protrusions abut on the inner side of one of the arc-shaped grooves.

[0015] Compared with the prior art, the utility model has the advantages as follows:

[0016] 1. The utility model discloses a cover plate is installed on the outer wall of the cutter body near the PCD cutting edge in rotation, and corresponding angle limiting mechanism is arranged on the cover plate, so that the cover plate can completely cover the one side of the cutter body near the PCD cutting edge, the PCD cutting edge part can be covered and protected, the probability that the PCD cutting edge part is damaged is reduced, and when the cover plate is completely covered, the outer edge part of the cover plate can protrude from the outer periphery of the cutter body, so that the PCD cutting edge can be protected on the side when the whole cutter body falls, and the cutting edge part is directly prevented from being impacted.

[0017] 2. The utility model discloses a cover plate's protection structure, compared with the form of the prior art that a plurality of cutting heads are loaded and protected through the plastic box with compartments, the occupied space size of the whole cutter body when storing is saved after protection, and independent protection of the cutting head is realized. ACCURACY OF DRAWINGS

[0018] Figure 1 It is the whole structure schematic diagram of the embodiment of the utility model.

[0019] Figure 2 It is the cutter body structure schematic diagram of the utility model.

[0020] Figure 3 It is the first limiting protrusion structure schematic diagram of the utility model.

[0021] Figure 4 It is the first limiting protrusion structure schematic diagram of the utility model.

[0022] Figure 5 It is the structure schematic view of the second embodiment of the utility model.

[0023] Figure 6 It is the structure schematic view of the convex edge of the utility model.

[0024] Figure 7 It is the structure schematic view of the second limiting convex block of the utility model.

[0025] Figure 8 It is the structure schematic view of the arc-shaped groove of the utility model.

[0026] Figure 9 It is the structure schematic view of the friction surface of the utility model.

[0027] Reference signs: 1, cutter body; 101, mounting hole; 102, outer facade; 2, PCD cutter edge; 201, chip breaker groove; 3, connecting ring; 301, convex edge; 4, cover plate; 401, perforation; 4011, friction surface; 5, first limiting convex block; 6, arc-shaped groove; 7, second limiting convex block. DETAILED DESCRIPTION

[0028] The technical scheme in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0029] Embodiment one, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the embodiment provides a kind of PCD cutter with chip breaker groove, including the cutter body 1 of diamond-shaped setting, two acute angles of the side of cutter body 1 are all fixed with PCD cutter edge 2, and PCD cutter edge 2 is formed with chip breaker groove 201 on outer wall, and the middle part of the side of cutter body 1 close to PCD cutter edge 2 is fixed with connecting ring 3, connecting ring 3 can be fixed on cutter body 1 using bonding mode, connecting ring 3 is coaxially arranged with mounting hole 101 on cutter body 1, and the inner diameter of connecting ring 3 is greater than the inner diameter of mounting hole 101;

[0030] When cutter body 1 is installed, by inserting bolt into mounting hole 101, bolt is screwed into the mounting seat of cutting equipment, so as to fix cutter body 1 on cutting equipment;

[0031] The outer side of the connecting ring 3 is rotatably installed with a cover plate 4 through a bearing, one side of the cover plate 4 is attached to the outer wall of the side of the cutter body 1 close to the connecting ring 3, the cover plate 4 is in the same rhombus shape as the cutter body 1, and the outer contour size of the cover plate 4 is larger than the outer contour size of the cutter body 1, so that the cover plate 4 can cover the entire side of the cutter body 1 close to the connecting ring 3, and the outer edge of the cover plate 4 also protrudes from the outer facade 102 of the cutter body 1 when the cover plate 4 covers the side of the cutter body 1 close to the connecting ring 3;

[0032] When the cover plate 4 completely covers the side of the cutter body 1, the PCD cutting edge 2 can be covered and protected to avoid damage to the cutting edge part by external force, and as shown in the covered state of Figure 1 and Figure 3 , the outer edge of the cover plate 4 also protrudes from the outer facade 102 of the cutter body 1, which ensures that the cover plate 4 forms an obstacle to avoid the PCD cutting edge 2 from contacting the falling surface during the entire tool falling, thereby further protecting the PCD cutting edge 2 and reducing the probability of impact;

[0033] The outer edge of the side of the cover plate 4 close to the cutter body 1 is symmetrically formed with first limiting protrusions 5, the first limiting protrusions 5 are in a hemispherical shape, and the two first limiting protrusions 5 can simultaneously abut on any two adjacent outer facades 102 on the cutter body 1, after the tool is installed on the mounting seat of the cutting equipment, the tool needs to be used, the cover plate 4 is rotated to deform the first limiting protrusions 5 to be squeezed between the cover plate 4 and the cutter body 1, until the entire cover plate 4 is turned by 90 degrees to the state as shown in Figure 1 and Figure 3 , at this time, the two first limiting protrusions 5 abut on the two adjacent outer facades 102 of the cutter body 1 in an obtuse angle, thereby exposing the PCD cutting edge 2, so that the tool can be used for cutting, and during daily storage and transportation, the cover plate 4 can be in the state of covering the cutter body 1 as shown in Figure 1 , the angle of the cover plate 4 is limited by the first limiting protrusions 5 to avoid random rotation.

[0034] In the second embodiment, please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , the present embodiment provides a PCD tool with a chip breaking groove 201, which comprises a cutter body 1 in a rhombus shape, two PCD cutting edges 2 are fixed at the two acute angles of one side of the cutter body 1, the chip breaking groove 201 is formed on the outer wall of the PCD cutting edge 2, a connecting ring 3 is fixed at the middle of the side of the cutter body 1 close to the PCD cutting edge 2, the connecting ring 3 is coaxially arranged with the mounting hole 101 on the cutter body 1, and the inner diameter of the connecting ring 3 is larger than the inner diameter of the mounting hole 101;

[0035] The cover plate 4 is sleeved on the outer side of the connecting ring 3 through the perforation 401 formed in the middle part of the cover plate 4, and the connecting ring 3 is formed with a protruding edge 301 on the outer wall of the end away from the cutter body 1, and the cover plate 4 is limited between the protruding edge 301 and the cutter body 1;

[0036] One side of the cover plate 4 is attached to the outer wall of the cutter body 1 close to the connecting ring 3, the cover plate 4 is arranged in a rhombus shape same as the cutter body 1, and the outer contour size of the cover plate 4 is larger than the outer contour size of the cutter body 1, so that the cover plate 4 can cover the entire side of the cutter body 1 close to the connecting ring 3;

[0037] The outer edge part of the cover plate 4 close to the side of the cutter body 1 is symmetrically formed with first limiting protrusions 5, the first limiting protrusions 5 are arranged in a hemispherical shape, and the two first limiting protrusions 5 can simultaneously abut on any two adjacent outer vertical surfaces 102 on the cutter body 1;

[0038] Compared with the first embodiment, the protruding edge 301 is used to complete the rotation connection and limiting work between the cover plate 4 and the connecting ring 3, and the structure is more convenient to assemble than the first embodiment. Before the connecting ring 3 is bonded to the cutter body 1, the cover plate 4 is sleeved on the outer side of the connecting ring 3, and then the bonding work is performed, that is, the assembly work of the cover plate 4 is completed, without using a bearing, thereby reducing the manufacturing cost.

[0039] In the third embodiment, please refer to Figure 7 and Figure 8 The difference between the third embodiment and the second embodiment is that four arc-shaped grooves 6 are formed on the inner wall of the perforation 401 at equal angles with the axis of the perforation 401 as the center, the outer wall of the connecting ring 3 is formed with second limiting protrusions 7, the second limiting protrusions 7 are arranged in an arc shape protruding outward matched with the outer shape of the arc-shaped grooves 6, and the second limiting protrusions 7 abut against the inner side of one of the arc-shaped grooves 6;

[0040] Different from the second embodiment, the angle limiting work of the cover plate 4 is realized by using the second limiting protrusions 7 on the inner side of the connecting ring 3, the protrusions used for limiting are hidden between the inner wall of the perforation 401 and the outer wall of the connecting ring 3, the contact with the external environment is reduced, and the service life is improved to a certain extent.

[0041] In the fourth embodiment, please refer to Figure 9 The difference between the fourth embodiment and the second embodiment is that a friction surface 4011 is formed on the inner wall of the perforation 401, and the outer wall of the connecting ring 3 is in interference fit with the inner wall of the friction surface 4011. Different from the second embodiment, the positioning of the cover plate 4 is realized by using friction force, and the complexity of the structure is reduced.

[0042] In conclusion, the utility model discloses the setting of lid body can cover the protection to PCD knife edge 2 part, reduce its probability of being damaged, and time the independent protection of tool, reduced the occupation space size of the storage transportation of the protected cutter body 1.

[0043] Although the embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A PCD cutter with chip breaker groove, comprising a rhombic cutter body (1), two PCD cutting edges (2) are fixed at two acute corners of one side of the cutter body (1), and a chip breaker groove (201) is formed on the outer wall of the PCD cutting edge (2), characterized in that, The connecting ring (3) is coaxially arranged with the mounting hole (101) on the cutter body (1), and the inner diameter of the connecting ring (3) is larger than the inner diameter of the mounting hole (101); The outer side of the connecting ring (3) is rotatably provided with a cover plate (4), one side of the cover plate (4) is attached to the outer wall of the cutter body (1) near the connecting ring (3), and the cover plate (4) can completely cover the side of the cutter body (1) near the connecting ring (3); The cover plate (4) is provided with a limiting assembly for limiting the angle of the cover plate (4) outside the connecting ring (3).

2. The PCD cutter with a chip breaker groove of claim 1, wherein, The cover plate (4) is provided in a rhombus shape same as the shape of the cutter body (1), and the outer contour size of the cover plate (4) is larger than the outer contour size of the cutter body (1).

3. The PCD cutter with a chip breaker groove of claim 2, wherein, The cover plate (4) is rotatably connected to the outer wall of the connecting ring (3) through a bearing.

4. The PCD cutter with a chip breaker groove of claim 2, wherein, The cover plate (4) is rotatably sleeved outside the connecting ring (3) through a through hole (401) formed in the middle of the cover plate (4), and a convex edge (301) is formed on the outer wall of the end of the connecting ring (3) away from the cutter body (1), and the cover plate (4) is limited between the convex edge (301) and the cutter body (1).

5. The PCD cutter with a chip-breaker according to claim 3 or 4, wherein, The limiting assembly includes first limiting protrusions (5) symmetrically formed on the outer edge part of the side of the cover plate (4) near the cutter body (1), the first limiting protrusions (5) are provided in a hemispherical shape, and the two first limiting protrusions (5) can simultaneously abut on any two adjacent outer vertical surfaces (102) on the cutter body (1).

6. The PCD cutter with a chip breaker groove of claim 4, wherein, The limiting assembly includes a friction surface (4011) formed on the inner wall of the through hole (401), and the outer wall of the connecting ring (3) is in interference fit with the inner wall of the friction surface (4011).

7. The PCD cutter with a chip breaker groove of claim 4, wherein, The limiting assembly includes four arc-shaped grooves (6) formed on the inner wall of the through hole (401) at equal angles with the axis of the through hole (401) as the center, the outer wall of the connecting ring (3) is provided with a second limiting protrusion (7), the second limiting protrusion (7) is provided in an arc shape protruding outward matched with the shape of the arc-shaped groove (6), and the second limiting protrusion (7) abuts against the inner side of one of the arc-shaped grooves (6).

Images