CN220497798U

CN220497798U - Cutting tool with detachable and replaceable tool bit

Info

Publication number: CN220497798U
Application number: CN202321955461.5U
Authority: CN
Inventors: 雷海涛; 徐湘源
Original assignee: Changsha Nanwan Cutting Tools Co ltd
Current assignee: Changsha Nanwan Cutting Tools Co ltd
Priority date: 2023-07-25
Filing date: 2023-07-25
Publication date: 2024-02-20
Anticipated expiration: 2033-07-25

Abstract

The utility model discloses a cutting tool with a detachable and replaceable tool bit, which comprises a tool handle and the tool bit, wherein a first limit groove is formed in the bottom of the tool bit, an installation groove is formed in the upper end face of the tool handle, a rotating shaft is rotatably connected in the installation groove, the lower end of the tool bit is inserted in the installation groove, the rotating shaft is clamped in the first limit groove, the cutting tool also comprises two annular second limit grooves which are sequentially formed in the outer side of the tool bit from top to bottom, a first limit mechanism which can be embedded with the second limit groove positioned above is arranged on the side wall of the upper end of the tool handle, and a second limit mechanism which can be embedded with the second limit groove positioned below is arranged on the inner wall of the installation groove; the cutting tool provided by the utility model is convenient for disassembling and fixing the tool bit, and can be more stably placed in the tool handle, so that the stability of the tool bit in working is enhanced.

Description

Cutting tool with detachable and replaceable tool bit

Technical Field

The utility model relates to the technical field of cutting tools, in particular to a cutting tool with a detachable and replaceable tool bit.

Background

A cutting tool or tool is any tool used to remove certain materials from a workpiece by shear deformation. Cutting may be accomplished by single point or multi-point tools, single point tools for turning, truing, planing and the like, and material removal by a cutting edge, milling and drilling tools are typically multi-point tools. It is an object with teeth or cutting edges. The abrasive tool is also a multi-point tool. Each abrasive grain resembles a microscopic single point cutting edge and shears tiny chips.

The geometric parameters of the cutting part of the cutter have great influence on the cutting efficiency and the processing quality, the cutting blade of the cutting tool is worn quickly in the long-time cutting use process, a bolt connecting hole is formed in the middle of the conventional cutting tool, an operator can fix the cutting blade on the cutting tool through the bolt matching with the bolt connecting hole, but the replacement is troublesome, and the bolt needs to be repeatedly disassembled, so the cutting tool with the detachable and replaceable cutter head is provided to solve the problems.

Disclosure of Invention

According to the defects existing in the prior art, the utility model aims to provide the cutting tool with the detachable and replaceable tool bit, which is convenient for detaching and fixing the tool bit, so that the tool bit is more stably placed in the tool handle, and the stabilizing effect of the tool bit during working is enhanced.

The technical aim of the utility model is realized by the following technical scheme:

the utility model provides a cutting tool of removable change of tool bit, includes handle of a knife and tool bit, first spacing groove has been seted up to the bottom of tool bit, the up end of handle of a knife is provided with the mounting groove, the inside rotation of mounting groove is connected with the pivot, the lower extreme cartridge of tool bit is in the mounting groove, and the inside of pivot joint at first spacing groove still includes

Two annular second limit grooves are sequentially formed in the outer side of the cutter head from top to bottom, a first limit mechanism which can be embedded with the second limit groove positioned above is arranged on the side wall of the upper end of the cutter handle, and a second limit mechanism which can be embedded with the second limit groove positioned below is arranged on the inner wall of the mounting groove.

Through adopting above-mentioned technical scheme, insert the handle of a knife inside through opening first stop gear with the tool bit, loosen first stop gear and make first stop gear and the second spacing groove gomphosis that is located the top, fix the tool bit, assist fixedly to the tool bit through setting up second stop gear and the second spacing groove cooperation that is located the below, make the tool bit more stable place inside the handle of a knife, when needs dismantle the tool bit, break away from first stop gear and second spacing groove through pulling first stop gear, second stop gear can deviate from in the second spacing groove voluntarily under the effect of tensile, pull out the tool bit at this moment and dismantle the change, convenient to use person operates.

The present utility model may be further configured in a preferred example to: the first limiting mechanism comprises two L-shaped plates which are symmetrically arranged on two sides of the cutter handle, the ends of the transverse parts of the two L-shaped plates are respectively fixedly connected with semicircular clamping plates, the two clamping plates are respectively clamped in the second limiting grooves which are arranged above the clamping plates, and the inner sides of the longitudinal parts of the two L-shaped plates are respectively connected with the outer walls of the cutter handle through elastic parts.

Through adopting above-mentioned technical scheme, through setting up first stop gear, pulling two L shaped plates, and then make two grip blocks keep away from the second spacing groove, be convenient for extract the tool bit, loosen the L shaped plate and make the grip block imbed and fix the tool bit in the second spacing groove, be convenient for dismantle and fix the tool bit.

The present utility model may be further configured in a preferred example to: the elastic part comprises a sleeve fixedly connected with the L-shaped plate and a connecting rod with one end sliding in the sleeve, the other end of the connecting rod is fixedly connected with the outer wall of the knife handle, and one end of the connecting rod positioned inside the sleeve is elastically connected with the inner wall of the sleeve through a first spring arranged inside the sleeve.

Through adopting above-mentioned technical scheme, through setting up elastic component, outwards pulling two L shaped plates, make first spring extension, loosen L shaped plate and make first spring retract, and then make the grip block inlay and fix the tool bit in the second spacing inslot.

The present utility model may be further configured in a preferred example to: semicircular bearings are respectively arranged on the inner walls of the two clamping plates, and the two bearings are attached to the inner wall of the second limiting groove above.

Through adopting above-mentioned technical scheme, can become rolling friction with the frictional force of grip block and tool bit through setting up the bearing, significantly reduced frictional force between the two, the tool bit of being convenient for rotates to the bearing is laminated with the inner wall of second spacing groove, reduces to rock, makes structural stability stronger.

The present utility model may be further configured in a preferred example to: the second stop gear is including setting up two recesses that are the symmetry setting in mounting groove inner wall both sides, the recess inner wall is through setting up at the inside second spring elastic connection gag lever post of recess, rotatory embedding has the ball on the terminal surface that second spring one end was kept away from to the gag lever post, two the ball is pivoted respectively and is embedded in the second spacing inslot that is located the below, and is located the below the longitudinal section of second spacing inslot is convex.

Through adopting above-mentioned technical scheme, can assist fixedly to the tool bit through setting up second stop gear, make the tool bit more stable place in the inside of handle of a knife, the stability of reinforcing tool bit during operation, the longitudinal section is the purpose that the realization ball that circular shape second spacing groove and circular shape ball can be convenient deviate from in the second spacing groove under the pulling of external force simultaneously.

The present utility model may be further configured in a preferred example to: and the edge of the end, far away from the second spring, of the limiting rod is rounded.

Through adopting above-mentioned technical scheme, also be in order to be convenient for the tip of gag lever post and ball pull at external force tear can deviate from smoothly from the second spacing groove, realize the separation of tool bit and handle of a knife.

The present utility model may be further configured in a preferred example to: and the edge of the lower end of the cutter head is subjected to fillet treatment.

Through adopting above-mentioned technical scheme, be convenient for insert the inside of handle of a knife with the tool bit, at the in-process that the tool bit moved down simultaneously, can be fine separate two balls until two balls inlay the second spacing inslot.

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

1. when the cutter head is required to be fixed, the two L-shaped plates are pulled, so that the two clamping plates and the bearing are driven to be away from each other, the cutter head is inserted into the cutter handle at the moment, the L-shaped plates are loosened, so that the clamping plates are embedded into the second limiting groove to fix the cutter head, when the cutter head is required to be replaced, the two L-shaped plates are pulled, so that the two clamping plates and the bearing are driven to be away from each other, and the second limiting groove is separated from each other, so that the cutter head is pulled out to be replaced, and the cutter head is convenient to detach and fix;

2. this removable cutting tool who changes of tool bit through setting up second stop gear, is convenient for carry out supplementary fixed to the tool bit, makes the more stable inside of placing at the handle of a knife of tool bit, the stability of reinforcing tool bit during operation.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a schematic view of a partial perspective view of the shank of the present embodiment;

FIG. 3 is a schematic perspective view of the cutter head of the present embodiment;

fig. 4 is a partially enlarged schematic view of the structure at a in fig. 1 in the present embodiment;

fig. 5 is a partially enlarged schematic view of the structure at B in fig. 1 in the present embodiment.

In the figure, 1, a knife handle; 2. a cutter head; 3. a first limit groove; 4. a rotating shaft; 5. the second limit groove; 6. a first limiting mechanism; 7. a second limiting mechanism; 61. an L-shaped plate; 62. a clamping plate; 63. an elastic part; 631. a connecting rod; 632. a sleeve; 633. a first spring; 64. a bearing; 71. a groove; 72. a limit rod; 73. a ball; 74. and a second spring.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

Examples:

referring to fig. 1-5, the utility model discloses a cutting tool with a detachable and replaceable tool bit, which comprises a tool shank 1 and a tool bit 2, wherein a first limit groove 3 is formed in the bottom of the tool bit 2, an installation groove is formed in the upper end face of the tool shank 1, a rotating shaft 4 is rotatably connected in the installation groove, the lower end of the tool bit 2 is inserted in the installation groove, the rotating shaft 4 is clamped in the first limit groove 3, and the cutting tool further comprises

Two annular second limit grooves 5 are sequentially formed in the outer side of the cutter head 2 from top to bottom, a first limit mechanism 6 which can be embedded with the second limit groove 5 positioned above is arranged on the side wall of the upper end of the cutter handle 1, and a second limit mechanism 7 which can be embedded with the second limit groove 5 positioned below is arranged on the inner wall of the mounting groove.

In this embodiment, the first limiting mechanism 6 includes two inverted L-shaped plates 61 symmetrically disposed on two sides of the tool shank 1, the ends of the transverse portions of the two L-shaped plates 61 are respectively and fixedly connected with semicircular clamping plates 62, the two clamping plates 62 are respectively clamped in the second limiting groove 5 located above, and the inner sides of the longitudinal portions of the two L-shaped plates 61 are respectively connected with the outer wall of the tool shank 1 through elastic portions 63;

further, the elastic portion 63 includes a sleeve 632 fixedly connected with the L-shaped plate 61, and a connecting rod 631 with one end sliding in the sleeve 632, the other end of the connecting rod 631 is fixedly connected with the outer wall of the tool holder 1, and one end of the connecting rod 631 located inside the sleeve 632 is elastically connected with the inner wall of the sleeve 632 through a first spring 633 disposed inside the sleeve 632.

In this embodiment, semicircular bearings 64 are respectively disposed on the inner walls of the two clamping plates 62, and the two bearings 64 are attached to the inner wall of the second limiting groove 5 located above.

In this embodiment, the second limiting mechanism 7 includes two grooves 71 symmetrically disposed on two sides of an inner wall of the mounting groove, the inner wall of the groove 71 is elastically connected with a limiting rod 72 through a second spring 74 disposed inside the groove 71, a ball 73 is rotationally embedded on an end surface of the limiting rod 72 far away from one end of the second spring 74, the two balls 73 are respectively rotationally embedded in the second limiting groove 5 located below, and a longitudinal section of the second limiting groove 5 located below is arc-shaped.

In this embodiment, the edge of the end of the stop lever 72 remote from the second spring 74 is rounded.

In this embodiment, when the cutter head 2 needs to be fixed, the two L-shaped plates 61 are pulled to further drive the two clamping plates 62 and the bearing 64 to be away from each other, at this time, the cutter head 2 is inserted into the cutter handle 1, so that the cutter head 2 is abutted against the balls 73, and further the second springs 74 are compressed, at this time, the cutter head 2 is continuously inserted into the second limiting grooves 5 below the balls 73 under the elastic potential energy of the second springs 74, the cutter head 2 is fixed in an auxiliary manner, at the same time, the L-shaped plates 61 are loosened to enable the clamping plates 62 to be inserted into the second limiting grooves 5 above to fix the cutter head 2, when the cutter head 2 needs to be replaced, the two L-shaped plates 61 are pulled outwards to further drive the two clamping plates 62 and the bearing 64 to be away from each other and separate from the second limiting grooves 5 above, at this time, the cutter head 2 is pulled out, and the second limiting grooves 5 below the balls 73 are simultaneously separated, and then the cutter head 2 is replaced.

It should be further explained that, the first spring 633 and the second spring 74 may be used with corresponding dampers, so that the first spring 633 and the second spring 74 operate more stably;

it should be further explained that the longitudinal section of the second limiting groove 5 above is in a shape of , so that the clamping plate 62 and the bearing 64 can be attached to each other conveniently, and the longitudinal section of the second limiting groove 5 below is in a circular arc shape, so that the balls 73 can roll inside the second limiting groove, and meanwhile, the balls are separated conveniently.

It should be further explained that the rotating shaft 4 may be used in combination with a driving motor, so as to drive the cutter head 2 to rotate.

In a further preferred embodiment of the utility model, the edges of the lower end of the cutting head 2 are rounded as shown in fig. 1 and 3.

In the present embodiment, the insertion of the tool bit 2 into the interior of the tool shank 1 is facilitated by rounding the edge of the lower end of the tool bit 2.

The implementation principle of the embodiment is as follows: the cutter head 2 is inserted into the cutter handle 1 by opening the first limiting mechanism 6, the first limiting mechanism 6 is loosened to enable the first limiting mechanism 6 to be embedded with the second limiting groove 5, the cutter head 2 is fixed in an auxiliary mode by arranging the second limiting mechanism 7, and when the cutter head 2 needs to be replaced, the cutter head 2 is pulled out forcefully by opening the first limiting mechanism 6.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a cutting tool that tool bit can dismantle change, includes handle of a knife (1) and tool bit (2), its characterized in that: the utility model discloses a cutter head, including cutter head (2), cutter handle, cutter head, rotary shaft, pivot (4), first spacing groove (3) has been seted up to the bottom of cutter head (2), the up end of handle of a knife (1) is provided with the mounting groove, the inside rotation of mounting groove is connected with, the lower extreme cartridge of cutter head (2) is in the mounting groove, and the inside of pivot (4) joint in first spacing groove (3), still include

Two annular second limit grooves (5) are sequentially formed in the outer side of the cutter head (2) from top to bottom, a first limit mechanism (6) which can be embedded with the second limit groove (5) positioned above is arranged on the side wall of the upper end of the cutter handle (1), and a second limit mechanism (7) which can be embedded with the second limit groove (5) positioned below is arranged on the inner wall of the mounting groove.

2. A cutting tool with a removable replaceable insert as set forth in claim 1, wherein: the first limiting mechanism (6) comprises two L-shaped plates (61) which are symmetrically arranged on two sides of the tool handle (1), semicircular clamping plates (62) are fixedly connected to the end portions of the transverse portions of the L-shaped plates (61) respectively, the two clamping plates (62) are clamped in the second limiting grooves (5) which are arranged above the clamping plates respectively, and the inner sides of the longitudinal portions of the two L-shaped plates (61) are connected with the outer walls of the tool handle (1) through elastic portions (63) respectively.

3. A cutting tool with a removable replaceable insert as set forth in claim 2, wherein: the elastic part (63) comprises a sleeve (632) fixedly connected with the L-shaped plate (61) and a connecting rod (631) with one end sliding in the sleeve (632), the other end of the connecting rod (631) is fixedly connected with the outer wall of the knife handle (1), and one end of the connecting rod (631) located inside the sleeve (632) is elastically connected with the inner wall of the sleeve (632) through a first spring (633) arranged inside the sleeve (632).

4. A cutting tool with a removable replaceable insert as set forth in claim 2, wherein: semicircular bearings (64) are respectively arranged on the inner walls of the two clamping plates (62), and the two bearings (64) are attached to the inner wall of the second limiting groove (5) above.

5. A cutting tool with a removable replaceable insert as set forth in claim 1, wherein: the second limiting mechanism (7) comprises two grooves (71) symmetrically arranged on two sides of the inner wall of the mounting groove, a limiting rod (72) is elastically connected to the inner wall of the groove (71) through a second spring (74) arranged inside the groove (71), balls (73) are embedded in the end face of the limiting rod (72) far away from one end of the second spring (74), the two balls (73) are respectively embedded in a second limiting groove (5) located below, and the longitudinal section of the second limiting groove (5) located below is arc-shaped.

6. A cutting tool with a removable replaceable insert as set forth in claim 5, wherein: the edge of the end, far away from the second spring (74), of the limiting rod (72) is rounded.

7. A cutting tool with a removable replaceable insert as set forth in claim 1, wherein: and the edge of the lower end of the cutter head (2) is subjected to round corner treatment.