CN118123064A - PCD forming cutter - Google Patents

Abstract

The application relates to the technical field of forming cutters, and provides a PCD forming cutter which comprises a cutter handle piece and a cutter blade piece; the knife handle comprises a knife handle part and a connecting part; the connecting part is arranged at one end of the knife handle part and is provided with an inclined surface; the top surface of the connecting part is provided with a connecting groove along the inclined direction of the inclined surface, and one end of the inclined surface, which is close to the handle part, is provided with a clamping part; two accommodating cavities are formed in the bottom of the connecting groove towards two sides, and locking pieces are arranged in the two accommodating cavities; the blade piece comprises a blade part and a plug-in part; the blade part is connected with the plug-in connection part, a reserved opening is arranged between the blade part and the plug-in connection part, and the plug-in connection part is matched with the connecting groove; the blade part moves along the inclined surface and is clamped with the clamping part; the inserting part synchronously moves and is inserted into the connecting groove to be connected with the locking piece. The application has the advantages that the cutters do not need to be rigidly connected, and the assembly is convenient.

Description

PCD forming cutter

Technical Field

The application relates to the technical field of forming cutters, in particular to a PCD forming cutter.

Background

PCD cutters are structurally divided mainly into monolithic PCD cutters and welded PCD blades. In recent years, welded PCD tools with handles are rapidly developed in the industries of automobiles and parts thereof. For PCD cutters, the welding of PCD composite sheets and hard alloy or steel substrates is very important, and the welding method of PCD mainly comprises the following steps: laser welding, vacuum diffusion welding, vacuum brazing, high frequency induction brazing, and the like. The brazing process of PCD compacts is one of the key technologies restricting the application of PCD cutters.

In general, the brazing of the hard alloy adopts a high-temperature brazing process (the brazing temperature is about 1000 ℃), while the PCD composite sheet is required to be brazed at a low temperature, otherwise, the PCD composite sheet is subjected to thermal damage, and the cutting performance of the PCD composite sheet is affected. The joint strength of low-temperature brazing is low, and the joint strength of the PCD welding forming cutter can be directly influenced due to the fact that the joint strength is easy to cause desoldering in the cutter machining process.

When some PCD cutters are connected with PCD blades in a welding mode, the PCD cutters are rigidly connected, so that when the PCD composite sheet is subjected to excessive force in the use process, the PCD cutters are easy to rigidly connect and break, and the subsequent use safety is affected.

Disclosure of Invention

In order to ameliorate the above problems, the present application provides a PCD forming cutter.

The PCD forming cutter provided by the application adopts the following technical scheme:

a PCD forming cutter comprising a shank member and a blade member; the knife handle comprises a knife handle part and a connecting part; the connecting part is arranged at one end of the knife handle part and is provided with an inclined surface; the top surface of the connecting part is provided with a connecting groove along the inclined direction of the inclined surface, and one end of the inclined surface, which is close to the handle part, is provided with a clamping part; two accommodating cavities are formed in the bottom of the connecting groove towards two sides, and locking pieces are arranged in the two accommodating cavities; the blade piece comprises a blade part and a plug-in part; the blade part is connected with the plug-in connection part, a reserved opening is arranged between the blade part and the plug-in connection part, and the plug-in connection part is matched with the connecting groove; the blade part moves along the inclined surface and is clamped with the clamping part; the inserting part synchronously moves and is inserted into the connecting groove to be connected with the locking piece.

Through adopting above-mentioned technical scheme, when needs are installed handle of a knife spare and blade spare, blade portion removes along the inclined plane, until blade portion removes to joint portion, and with joint portion joint, and grafting portion follows blade portion synchronous movement, grafting portion inserts along the spread groove removes in the spread groove, support tightly the retaining member when removing to the retaining member, after blade portion and joint portion joint, grafting portion is synchronous with retaining member joint for whole handle of a knife spare and blade spare interconnect need not to use welded mode also can realize convenient and firm connection.

Optionally, the locking member includes an elastic portion and a wedge portion; the elastic part is connected with the inner cavity wall surface of the accommodating cavity; the wedge-shaped part is positioned in the accommodating cavity and connected with the elastic part, the wedge-shaped surface of the wedge-shaped part is inclined from the notch of the connecting groove to the bottom of the connecting groove, and the wedge-shaped part is provided with a locking groove; wedge-shaped protrusions are arranged on two sides of the plug-in portion, and when the plug-in portion is inserted into the connecting groove, the wedge-shaped protrusions move along the surface of the wedge-shaped portion until the wedge-shaped protrusions enter the locking groove and are clamped with the wedge-shaped portion.

Through adopting above-mentioned technical scheme, utilize the elastic part to provide the mode of wedge elasticity for after the wedge received the bellied promotion of wedge, can withdraw and hold the chamber in, until locking groove and wedge are protruding when unanimous, the wedge receives the elasticity effect and removes to the wedge arch, make the wedge protruding card go into locking groove in, utilize wedge arch and locking groove to lock grafting portion in the spread groove, the blade portion receives the effect synchronous joint of joint portion outside the inclined plane fixedly, make blade piece and handle of a knife piece firmly be connected.

Optionally, the locking piece further comprises a limiting part; a limiting groove is formed in the inner wall of the accommodating cavity; the wedge-shaped part is in sliding connection with the limiting groove through the limiting part.

Through adopting above-mentioned technical scheme, spacing portion restriction in spacing inslot can only follow spacing inslot and remove to spacing with the position of wedge, can avoid wedge under receiving the bellied promotion of wedge, the position emergence skew, with the stability that improves the fixed point removal and the removal process of wedge.

Optionally, the locking piece further comprises a locking part; the locking part is positioned at one end of the wedge-shaped part, which is close to the notch of the connecting groove, and extends towards the direction away from the elastic part; the locking part is clamped with the inserting part.

Through adopting above-mentioned technical scheme, utilize locking portion and grafting portion to provide secondary locking effect, further improve the steadiness between grafting portion and the spread groove.

Optionally, one end of the locking part, which is close to the plugging part, is a hemispherical arc surface.

Through adopting above-mentioned technical scheme, when utilizing the arcwall face can make locking portion receive wedge bellied promotion, adapt to different atress directions, avoid wedge bellied to be blocked and can't continue to remove to the tank bottom of spread groove.

Optionally, the plugging part is three sections, a section close to the bottom of the connecting groove is provided with the wedge-shaped protrusion, a section close to the notch of the connecting groove is provided with a fitting part, the fitting part is provided with a fitting groove matched with the locking part, and the fitting part is clamped with the locking part through the fitting groove; the middle section between the engaging part and the wedge-shaped bulge is a hollow section.

Through adopting above-mentioned technical scheme, when the grafting portion inserts the spread groove, wedge bulge moves along the spread groove at first, when moving to locking portion, promote locking portion to the elastic part direction, until wedge bulge breaks away from locking portion, make locking portion reset to the hollow section, along with wedge bulge and wedge portion contact, promote wedge portion to the elastic part direction again, locking portion is moving along holding chamber or spacing groove once, until wedge bulge moves to the lock groove, locking portion is leveled with the fit groove, make wedge bulge and lock groove joint, locking portion and fit groove joint, through two joint effects, in order to guarantee that the installation of grafting portion and spread groove is stable.

Optionally, a buffer layer is disposed on the engaging portion.

Through adopting above-mentioned technical scheme, the main application of buffer layer provides the compressive resistance and the buffer capacity of engaging portion, when blade portion receives too big pressure in the use, can receive to engaging portion and connecting portion, if engaging portion and connecting portion direct rigid contact make engaging portion fracture easily, consequently set up the buffer layer after, multiplicable buffer force, the atress dispersion offset when engaging portion and connecting portion contact to the protection engaging portion reduces the circumstances that the atress is too big and breaks off.

Optionally, the device also comprises an absorption part; the adsorption piece is connected with the knife handle piece; the wedge-shaped part is also provided with a magnetic attraction part; the adsorption piece is magnetically connected with the magnetic attraction part, and the magnetic force of the adsorption piece is larger than the elastic force of the elastic part.

Through adopting above-mentioned technical scheme, when blade spare wearing and tearing or damage, can separate blade spare and handle of a knife spare to change new blade spare, and when needs change, because wedge and grafting portion's joint state, make grafting portion can't break away from the spread groove, consequently set up and inhale the part with wedge and grafting portion's joint state separation with magnetism.

Optionally, the adsorption element is detachably connected with the knife handle element.

Through adopting above-mentioned technical scheme, make through detachable connection's mode adsorb the piece and make convenient and handle of a knife spare interconnect, do not influence the use of handle of a knife spare in daily flow simultaneously to also prevent the loss of adsorbing the piece, when influencing follow-up needs change blade spare, can't provide the adsorption effect

Optionally, a clamping groove is formed in the inclined surface, and the blade part is spliced with the clamping groove.

Through adopting above-mentioned technical scheme, utilize the joint groove can provide the spacing effect of blade portion for every direction of blade portion all receives spacing effect, further avoids taking place the skew condition when using.

In summary, the present application includes at least one of the following beneficial technical effects:

1. When the cutter handle piece and the cutter blade piece are required to be installed, the cutter blade part moves along the inclined plane until the cutter blade part moves to the clamping part and is clamped with the clamping part, the inserting part moves synchronously along the cutter blade part, the inserting part is inserted into the connecting groove and moves along the connecting groove, the locking part is abutted when the inserting part moves to the locking part, and after the cutter blade part is clamped with the clamping part, the inserting part is synchronously clamped with the locking part, so that the integral cutter handle piece and the cutter blade piece are connected with each other, and convenient and stable connection can be realized without using a welding mode;

2. The elastic part is utilized to provide the elastic force of the wedge-shaped part, so that the wedge-shaped part can be retracted into the accommodating cavity after being pushed by the wedge-shaped bulge, until the locking groove is consistent with the wedge-shaped bulge, the wedge-shaped part moves towards the wedge-shaped bulge under the action of the elastic force, the wedge-shaped bulge is clamped into the locking groove, the wedge-shaped bulge and the locking groove are utilized to lock the inserting part in the connecting groove, the blade part is synchronously clamped and fixed outside the inclined plane under the action of the clamping part, and the blade part is firmly connected with the cutter handle part;

3. when the plug-in part is inserted into the connecting groove, the wedge-shaped bulge firstly moves along the connecting groove, and when the wedge-shaped bulge moves to the locking part, the locking part is pushed to the direction of the elastic part until the wedge-shaped bulge is separated from the locking part, so that the locking part is restored to the hollow section, the wedge-shaped bulge is contacted with the wedge-shaped part, and then the wedge-shaped part is pushed to the direction of the elastic part, the locking part moves along the accommodating cavity or the limiting groove once until the wedge-shaped bulge moves to the locking groove, the locking part is leveled with the engaging groove, so that the wedge-shaped bulge is clamped with the locking groove, and the locking part is clamped with the engaging groove, so that the stable installation of the plug-in part and the connecting groove is ensured through the clamping effect of two parts;

4. When the blade piece is worn or damaged, the blade piece and the cutter handle piece can be separated to be replaced by a new blade piece, and when the blade piece needs to be replaced, the wedge-shaped part and the plug-in part cannot be separated from the connecting groove due to the clamping state of the wedge-shaped part and the plug-in part, so that the suction piece and the magnetic suction part are arranged to separate the clamping state of the wedge-shaped part and the plug-in part.

Drawings

FIG. 1 is a schematic perspective view of a forming tool according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a first embodiment of a connection portion according to the present application;

FIG. 3 is a schematic side view of a blade member in accordance with some embodiments of the application;

FIG. 4 is a schematic cross-sectional view of a second embodiment of a connection portion according to the present application;

FIG. 5 is a schematic cross-sectional view of a third embodiment of a connection portion according to the present application;

FIG. 6 is a schematic cross-sectional view of a first alternative connection configuration in accordance with some embodiments of the present application;

FIG. 7 is a schematic diagram of a second cross-sectional configuration of a variation of the connection in some embodiments of the application;

FIG. 8 is a schematic view of a second perspective of a forming tool according to some embodiments of the application;

FIG. 9 is a schematic diagram of a fourth cross-sectional structure of a connection portion according to some embodiments of the present application;

FIG. 10 is a schematic perspective view of a connector and blade member according to some embodiments of the present application;

FIG. 11 is a schematic top view illustrating a state in which a blade portion is engaged with an engaging groove according to some embodiments of the present application;

the marks in the drawings are: 1. the tool holder comprises a tool holder body, 11, a tool holder body, 12, a connecting part, 13, a clamping part, 121, an inclined surface, 122, a connecting groove, 123, a containing cavity, 124, a limiting groove, 125, a clamping groove, 2, a blade body, 21, a blade part, 22, a plug-in part, 221, a wedge-shaped bulge, 222, a fitting groove, 23, a reserved opening, 24, a fitting part, 241, a buffer layer, 3, a locking part, 31, an elastic part, 32, a wedge-shaped part, 321, a locking groove, 33, a limiting part, 34, a locking part, 35, a magnetic attraction part, 4 and an absorption part.

Detailed Description

Other advantages and effects of the present application will be readily apparent to those skilled in the art from the following detailed description of the embodiments of the application. The application may be practiced or carried out in other embodiments and with various details, and various modifications and alterations may be made to the details of the application from various points of view and applications without departing from the spirit of the application. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.

The embodiments of the present application will be described in detail below with reference to the attached drawings so that those skilled in the art to which the present application pertains can easily implement the present application. This application may be embodied in many different forms and is not limited to the embodiments described herein.

In the context of the present description, reference to the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples, as well as features of various embodiments or examples, presented herein may be combined and combined by those skilled in the art without conflict.

Furthermore, the terms "first," "second," and the like, are used merely for purposes of referring to objects, and are not intended to indicate or imply relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the context of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" with other elements interposed therebetween. In addition, when a certain component is said to be "included" in a certain device, unless otherwise stated, other components are not excluded, but it means that other components may be included.

The present application will be described in further detail with reference to fig. 1 to 11.

The embodiment of the application discloses a PCD forming cutter.

A PCD forming cutter, referring to fig. 1, comprising a shank member 1 and a blade member 2; the knife handle comprises a knife handle part 11 and a connecting part 12; the connecting part 12 is mounted at one end of the handle part 11, and the connecting part 12 is provided with an inclined surface 121; the shank 11 may have a rectangular elongated structure, the connecting portion 12 is mounted on the top end of the shank 11, the connecting portion 12 may be a T-shaped block, and an inclined surface 121 is formed on the right side (right side in the drawing) of the T-shaped block, and the inclined surface 121 is used for mounting the blade 2.

The connecting groove 122 has been seted up along the incline direction of inclined plane 121 to connecting portion 12 top surface, and inclined plane 121 is close to shank portion 11 one end and is provided with joint portion 13, and connecting groove 122 slope is offered equally, and the gradient is parallel with inclined plane 121, and joint portion 13 sets up in the outer wall bottom of inclined plane 121, and joint portion 13 can be barb-like structure for block blade piece 2, in order to carry out spacingly to blade piece 2 surface.

Referring to fig. 2, two accommodating cavities 123 are provided at the bottom of the connecting groove 122 toward two sides, and locking pieces 3 are provided in the two accommodating cavities 123, that is, two locking pieces 3 are provided and are respectively located in the two accommodating cavities 123, and locking pieces 3 can be locking pieces with resetting elasticity.

Referring to fig. 3, the blade member 2 includes a blade portion 21 and a socket portion 22; the blade portion 21 is connected with the plug portion 22, a reserved opening 23 is arranged between the blade portion 21 and the plug portion 22, the length of the reserved opening 23 is consistent with the length from the notch of the connecting groove 122 to the tail end of the inclined surface 121, the plug portion 22 is matched with the connecting groove 122, the blade portion 21 is a PCD composite sheet, and the blade portion 21 is hereinafter referred to as the blade portion 21.

The plug-in portion 22 can adopt a plug-in board or a plug-in frame, the plug-in portion 22 and the blade portion 21 can be fixedly connected, and the plug-in portion 22 and the blade portion 21 are parallel to each other, so that when the plug-in portion 22 is required to be installed, the connection groove 122 is tightly attached to the plug-in portion 22, the blade portion 21 is tightly attached to the inclined surface 121 and moved, and the reserved opening 23 is a space for inserting a portion of the connection portion 12 between the plug-in portion 22 and the blade portion 21 when the plug-in portion 22 is inserted into the connection groove 122.

Specifically, when the tool holder 1 and the tool 2 need to be mounted, the tool part 21 moves along the inclined surface 121 until the tool part 21 moves to the clamping part 13 and is clamped with the clamping part 13, the inserting part 22 moves synchronously along the tool part 21, the inserting part 22 is inserted into the connecting groove 122 and moves along the connecting groove 122, the locking part 3 is abutted when moving to the locking part 3, and after the tool part 21 is clamped with the clamping part 13, the inserting part 22 is synchronously clamped with the locking part 3, so that the whole tool holder 1 and the tool 2 are connected with each other, and stable connection can be realized without using a welding mode.

Further, referring to fig. 2 and 4, the locker 3 includes an elastic portion 31 and a wedge portion 32; the elastic part 31 is connected with the inner cavity wall surface of the accommodating cavity 123, and the elastic part 31 can adopt a compression spring, and the compression spring is positioned in the accommodating cavity 123 to provide elastic force supply.

The wedge-shaped part 32 is located in the accommodating cavity 123 and is connected with the elastic part 31, the wedge-shaped surface of the wedge-shaped part 32 is inclined from the notch of the connecting groove 122 to the bottom of the connecting groove 122, the wedge-shaped part 32 is provided with a locking groove 321, the wedge-shaped part 32 can be a wedge-shaped plate or a wedge-shaped block, and after the elastic part 31 of the wedge-shaped part 32 is connected, the elastic part 31 provides the elastic force for the movement of the wedge-shaped part 32 to the connecting groove 122.

Wedge-shaped protrusions 221 are arranged on two sides of the plug-in portion 22, when the plug-in portion 22 is inserted into the connecting groove 122, the wedge-shaped protrusions 221 move towards the bottom of the connecting groove 122, and due to the fact that the wedge-shaped portions 32 are under the action of the elastic portions 31, the wedge-shaped portions 32 are located in the connecting groove 122, and the plug-in portion 22 is prevented from moving towards the bottom of the connecting groove 122.

When the plug-in part 22 continues to move under the action of force, the wedge-shaped protrusion 221 moves along the surface of the wedge-shaped part 32, the wedge-shaped part 32 is pushed to the elastic part 31 along the accommodating cavity 123 in the moving process, the plug-in part 22 is abutted to the bottom of the connecting groove 122, and when the wedge-shaped protrusion 221 moves to the locking groove 321 on the wedge-shaped part 32, the wedge-shaped protrusion 221 and the wedge-shaped part 32 are in a hollow state, and after the wedge-shaped part 32 loses the pushing of the wedge-shaped protrusion 221, the wedge-shaped protrusion 221 moves to the plug-in part 22 along the accommodating cavity 123 under the elastic action of the elastic part 31, so that the wedge-shaped protrusion 221 is clamped in the locking groove 321, and the clamping connection between the plug-in part 22 and the wedge-shaped part 32 is completed.

The elastic part 31 is utilized to provide the elastic force of the wedge part 32, so that the wedge part 32 can be retracted into the accommodating cavity 123 after being pushed by the wedge protrusion 221, until the locking groove 321 is consistent with the wedge protrusion 221, the wedge part 32 is moved towards the wedge protrusion 221 under the action of the elastic force, the wedge protrusion 221 is clamped into the locking groove 321, the wedge protrusion 221 and the locking groove 321 are utilized to lock the inserting part 22 in the connecting groove 122, the blade part 21 is synchronously clamped and fixed under the action of the clamping part 13 outside the inclined surface 121, and the blade part 2 is firmly connected with the knife handle part 1.

Further, referring to fig. 5, the locking member 3 further includes a limiting portion 33; a limiting groove 124 is formed in the inner wall of the accommodating cavity 123; the wedge-shaped part 32 is slidably connected with the limiting groove 124 through the limiting part 33, the limiting part 33 can adopt a limiting block, the limiting groove 124 can adopt a special-shaped groove, such as a T-shaped groove, an I-shaped groove or a chamfer-shaped groove, and the shape of the corresponding limiting block is matched with the shape of the inner groove of the limiting groove 124.

The limiting part 33 is connected with the wedge part 32, so that the limiting part 33 is limited in the limiting groove 124 and can only move along the limiting groove 124, so that the position of the wedge part 32 is limited, the wedge part 32 can be prevented from being shifted under the pushing of the wedge protrusion 221, and the fixed point movement and the stability of the movement process of the wedge part 32 are improved.

In some embodiments, referring to fig. 6, the locking member 3 further includes a locking portion 34; the locking part 34 is located at one end of the wedge-shaped part 32 near the notch of the connecting groove 122 and extends away from the elastic part 31, the locking part 34 is clamped with the plugging part 22, and the locking part 34 can be a locking column, a locking frame or a locking plate.

Divided into a top end and a bottom end of the wedge-shaped portion 32, wherein the top end of the wedge-shaped portion 32 is close to the notch of the connecting groove 122, the bottom end of the wedge-shaped portion 32 is close to the bottom of the connecting groove 122, and the top end length of the wedge-shaped portion 32 is smaller than the bottom end length, so that the top end to the bottom end of the wedge-shaped portion 32 forms a wedge-shaped surface or an inclined surface, and the installation position of the locking portion 34 is located at the top end of the wedge-shaped portion 32.

At the same time, the locking portion 34 extends the length of the wedge-shaped surface until it is flush with the vertical position of the bottom end, or is longer than the length of the bottom of the wedge-shaped surface, so that a secondary locking effect can be provided by the locking portion 34 and the plug portion 22.

If a socket is formed on the plugging portion 22, when the wedge-shaped protrusion 221 moves to the locking groove 321, the socket moves to a position horizontal to the locking portion 34 synchronously, so that when the wedge-shaped portion 32 moves to the plugging portion 22 under the action of the elastic force of the elastic portion 31, the wedge-shaped protrusion 221 is clamped with the locking groove 321, and the locking portion 34 is inserted into the socket, so that the clamping effect is also achieved.

The locking portion 34 is a hemispherical arc surface near one end of the plug portion 22, so that when the wedge-shaped protrusion 221 moves to the locking portion 34, the wedge-shaped protrusion 221 can push the locking portion 34 along the arc surface, so that the locking portion 34 drives the wedge-shaped portion 32 to move towards the elastic portion 31, until the locking portion 34 is separated from the wedge-shaped protrusion 221, the wedge-shaped protrusion 221 contacts with the wedge-shaped surface of the wedge-shaped portion 32, and when the locking portion 34 is pushed by the wedge-shaped protrusion 221, the arc surface is utilized to adapt to different stress directions, so that the wedge-shaped protrusion 221 is prevented from being blocked and cannot continuously move towards the bottom of the connecting groove 122.

Further, referring to fig. 7, the plugging portion 22 is divided into three sections, a wedge-shaped protrusion 221 is provided near the bottom of the connecting groove 122, and a engaging portion 24 is provided near the notch of the connecting groove 122, and the engaging portion 24 is engaged with the locking portion 34; the middle section between the engaging portion 24 and the wedge-shaped protrusion 221 is a hollow section, and after the hollow section is provided, the plugging portion 22 is not blocked by the influence of the locking portion 34 when it descends along the connecting slot 122, and the length of the locking portion 34 is not limited to be equal to the vertical position of the bottom end or longer than the length of the bottom of the wedge-shaped surface.

Meanwhile, the engaging portion 24 is matched with the notch of the connecting groove 122, so that when the inserting portion 22 moves to the bottom of the connecting groove 122, the engaging portion 24 plugs the notch of the connecting port, sundries can be prevented from entering the connecting groove 122, and the engaging portion 24 is provided with an engaging groove 222 for inserting the locking portion 34 and matching the size and shape of the locking portion 34.

The provision of the wedge-shaped protrusions 221 is substantially identical to the above-described embodiments, and a detailed description thereof will not be repeated.

Specifically, when the plugging portion 22 is inserted into the connection groove 122, the wedge-shaped protrusion 221 moves along the connection groove 122 first, and pushes the locking portion 34 towards the direction of the elastic portion 31 when moving to the locking portion 34 until the wedge-shaped protrusion 221 is separated from the locking portion 34, so that the locking portion 34 is restored to the hollow section, and as the wedge-shaped protrusion 221 contacts with the wedge-shaped portion 32, the wedge-shaped portion 32 is pushed towards the direction of the elastic portion 31, the locking portion 34 moves along the accommodating cavity 123 or the limiting groove 124 once until the wedge-shaped protrusion 221 moves to the locking groove 321, the locking portion 34 is leveled with the engaging groove 222, so that the wedge-shaped protrusion 221 is clamped with the locking groove 321, and the locking portion 34 is clamped with the engaging groove 222, so that the mounting stability of the plugging portion 22 and the connection groove 122 is ensured through the two clamping effects.

Further, the engaging portion 24 is provided with a buffer layer 241, and the buffer layer 241 may be a rubber material layer or a plastic material layer.

The buffer layer 241 is mainly used for providing compression resistance and buffering capacity of the engaging portion 24, when the blade portion 21 receives excessive pressure during use, the engaging portion 24 is pressed against the connecting portion 12, and if the engaging portion 24 is in direct rigid contact with the connecting portion 12, the engaging portion 24 is easily broken, so that after the buffer layer 241 is provided, the buffering force can be increased, and the stress dispersion when the engaging portion 24 is in contact with the connecting portion 12 is counteracted, so that the engaging portion 24 is protected, and the situation that the stress is excessive and the breaking is reduced.

In some embodiments, referring to fig. 8, an adsorbing member 4 is further included; the absorption part 4 is connected with the knife handle part 1; the wedge-shaped part 32 is also provided with a magnetic attraction part 35; the absorbing part 4 is magnetically connected with the magnetic absorbing part 35, the magnetic force of the absorbing part 4 is larger than the elastic force of the elastic part 31, the absorbing part 4 can adopt permanent magnets, the number of the permanent magnets is two, the permanent magnets are respectively used for separating the two locking parts 3, and the magnetic absorbing part 35 can adopt magnetic absorbing blocks or magnetic absorbing rings made of ferrous metal or metal materials which can be magnetically absorbed.

When the blade member 2 is worn or damaged, the blade member 2 can be separated from the cutter handle member 1 to replace the blade member 2, and when the blade member 2 needs to be replaced, the wedge-shaped portion 32 and the plug-in portion 22 cannot be separated from the connecting groove 122 due to the clamped state of the wedge-shaped portion 32 and the plug-in portion 22, so that the suction member 4 and the magnetic suction portion 35 are arranged to separate the clamped state of the wedge-shaped portion 32 and the plug-in portion 22.

The magnetic attraction part 35 can be arranged at one end of the wedge part 32, which is contacted with the elastic part 31, when the plug part 22 is required to be separated from the wedge part 32, the attraction part 4 is arranged on the outer wall of the connecting part 12, which is close to the magnetic attraction part 35, and the magnetic attraction force of the attraction part 4 is larger than the elastic force provided by the elastic part 31, so that the magnetic attraction part 35 is attracted by the attraction part 4 to drive the wedge part 32 to move along the accommodating cavity 123 or the limit groove 124 towards the direction of the elastic part 31, and the elastic part 31 is extruded.

During the movement of the wedge-shaped part 32, the wedge-shaped protrusion 221 is separated from the locking groove 321, the locking part 34 is separated from the engaging groove 222, the plug-in part 22 loses the locking function of the locking part 34 and the locking groove 321, and can be pulled out along the connecting groove 122, and the blade part 21 is separated from the clamping part 13, so that the blade part 2 is separated from the handle part 1 integrally, and the blade part 2 can be replaced conveniently.

Further, the detachable connection between the absorbing member 4 and the handle member 1 may be a screw connection, for example, a screw groove is formed at one end of the handle member 1 away from the connecting portion 12, i.e. at the bottom of the handle member 1, a threaded rod is disposed on the absorbing member 4, and the absorbing member 4 is screwed with the screw groove of the handle member 1 by using the threaded rod, so that the absorbing member 4 is firmly installed, and when the absorbing member 4 needs to be used, the absorbing member 4 is rotated, so that the absorbing member 4 is separated from the screw groove.

Make the suction member 4 convenient with handle of a knife spare 1 interconnect through detachable connection's mode, do not influence handle of a knife spare 1 simultaneously and use in daily flow to also prevent the loss of suction member 4, influence when later need changing blade piece 2, can't provide the adsorption effect.

In some embodiments, referring to fig. 10 and 11, the inclined surface 121 is provided with a clamping groove 125, the blade portion 21 is in an i-shaped sheet structure, the blade portion 21 is inserted into the clamping groove 125, and the inclined surface 121 is provided with the clamping groove 125, so that the blade portion 21 can be inserted into the clamping groove 125.

The blade portion 21 may adopt a tooling type sheet structure or a monolithic structure, for example, when adopting the tooling type sheet structure, the centers of the two side edges of the blade portion 21 are arranged in a hollow manner, so that the connecting portion 12 at the clamping slot 125 is clamped at the centers of the two sides of the blade portion 21 in a hollow manner, thereby realizing the limiting effect.

If the single-sheet structure is adopted, the blade part 21 is directly inserted into the clamping groove 125 and penetrates into the groove bottom of the clamping groove 125 to limit the blade part 21, the single-sheet structure is compared with the I-shaped sheet structure, the consumable materials can be saved, and the I-shaped sheet structure is compared with the single-sheet structure, the thickness is increased to some extent, and the service life is longer.

The embodiments of the present application are all preferred embodiments of the present application, and are not intended to limit the scope of the present application, wherein like reference numerals are used to refer to like elements throughout. Therefore: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (10)

1. A PCD forming cutter comprising a shank member (1) and a blade member (2); the knife handle comprises a knife handle part (11) and a connecting part (12); the connecting part (12) is arranged at one end of the handle part (11), and the connecting part (12) is provided with an inclined surface (121), and the connecting part is characterized in that a connecting groove (122) is formed in the top surface of the connecting part (12) along the inclined direction of the inclined surface (121), and a clamping part (13) is arranged at one end, close to the handle part (11), of the inclined surface (121); two accommodating cavities (123) are formed in the bottom of the connecting groove (122) towards two sides, and locking pieces (3) are arranged in the two accommodating cavities (123); the blade piece (2) comprises a blade part (21) and a plug-in part (22); the blade part (21) is connected with the plug part (22), a reserved opening (23) is arranged between the blade part (21) and the plug part (22), and the plug part (22) is matched with the connecting groove (122); the blade part (21) moves along the inclined surface (121) and is clamped with the clamping part (13); the plug-in part (22) moves synchronously and is inserted into the connecting groove (122) to be connected with the locking piece (3).

2. A PCD shaping cutter as claimed in claim 1, wherein the locking member (3) comprises a resilient portion (31) and a wedge portion (32); the elastic part (31) is connected with the inner cavity wall surface of the accommodating cavity (123); the wedge-shaped part (32) is positioned in the accommodating cavity (123) and is connected with the elastic part (31), the wedge-shaped surface of the wedge-shaped part (32) is inclined from the notch of the connecting groove (122) to the bottom of the connecting groove (122), and the wedge-shaped part (32) is provided with a locking groove (321); wedge-shaped protrusions (221) are arranged on two sides of the plug-in portion (22), when the plug-in portion (22) is inserted into the connecting groove (122), the wedge-shaped protrusions (221) move along the surface of the wedge-shaped portion (32) until the wedge-shaped protrusions (221) enter the locking groove (321) and are clamped with the wedge-shaped portion (32).

3. A PCD shaping cutter as claimed in claim 2, wherein the locking member (3) further comprises a spacing portion (33); a limiting groove (124) is formed in the inner wall of the accommodating cavity (123); the wedge-shaped part (32) is in sliding connection with the limit groove (124) through the limit part (33).

4. A PCD shaping cutter as claimed in claim 2 or 3, wherein the locking member (3) further comprises a locking portion (34); the locking part (34) is positioned at one end of the wedge-shaped part (32) close to the notch of the connecting groove (122) and extends in a direction away from the elastic part (31); the locking part (34) is clamped with the inserting part (22).

5. A PCD shaping cutter as claimed in claim 4, wherein the locking portion (34) has a hemispherical arcuate surface at an end thereof adjacent the spigot portion (22).

6. The PCD forming cutter according to claim 5, wherein the spigot portion (22) is divided into three sections, the wedge-shaped protrusion (221) is provided at a section near the bottom of the connecting groove (122), the engaging portion (24) is provided at a section near the notch of the connecting groove (122), the engaging portion (24) is provided with an engaging groove (222) matching the locking portion (34), and the engaging portion (24) is engaged with the locking portion (34) through the engaging groove (222); an intermediate section between the engagement portion (24) and the wedge-shaped protrusion (221) is a hollow section.

7. A PCD forming cutter as claimed in claim 6, wherein the engaging portion (24) is provided with a buffer layer (241).

8. A PCD shaping cutter as claimed in claim 2, further comprising an absorbent member (4); the adsorption piece (4) is connected with the knife handle piece (1); the wedge-shaped part (32) is also provided with a magnetic attraction part (35); the adsorption piece (4) is magnetically connected with the magnetic attraction part (35), and the magnetic force of the adsorption piece (4) is larger than the elastic force of the elastic part (31).

9. A PCD shaping cutter as claimed in claim 8, wherein the adsorbing member (4) is detachably connected to the shank member (1).

10. A PCD shaping cutter as claimed in claim 1, wherein the inclined face (121) is provided with a clamping groove (125), the blade portion (21) being in engagement with the clamping groove (125).