CN210755425U

CN210755425U - T-shaped milling cutter convenient for replacing cutter head

Info

Publication number: CN210755425U
Application number: CN201921497448.3U
Authority: CN
Inventors: 张建兴; 杨梓; 张寅�
Original assignee: Changzhou Ruiyu Communication Equipment Manufacturing Co ltd
Current assignee: Changzhou Ruiyu Communication Equipment Manufacturing Co ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-06-16
Anticipated expiration: 2029-09-10

Abstract

The utility model discloses a T type milling cutter convenient to change tool bit relates to machining cutter technical field, aim at solving the technical problem that the tool bit is difficult to change, its technical scheme main points are including handle of a knife and connect in the tool bit of handle of a knife tip, the tool bit is along its axle center fixedly connected with connecting rod, the handle of a knife is equipped with along its axle center and supplies the connecting rod adaptation to insert the connecting hole of establishing, connecting rod and handle of a knife run through and are equipped with the pinhole, the interpolation of adaptation is equipped with the round pin axle in the pinhole, the slidable cover in the handle of a knife outside is equipped with the lag cylinder that is used for the closing cap pinhole, the fixed cover of one side that the handle of a knife is; the dismouting of tool bit and handle of a knife can be realized to the present case, avoids need abandoning tool bit and handle of a knife wholly after tool bit wearing and tearing are serious, only needs to change the tool bit now, can not waste the handle of a knife, more economic environmental protection.

Description

T-shaped milling cutter convenient for replacing cutter head

Technical Field

The utility model relates to a machining cutter technical field, more specifically say, it relates to a T type milling cutter convenient to change tool bit.

Background

The T-shaped milling cutter is a tool for machining T-shaped grooves on various machine table tops or other structures.

The existing Chinese patent with the publication number of CN206747673U provides a T-shaped milling cutter, which comprises a cutter handle and a cutter head arranged at the end part of the cutter handle, wherein when the T-shaped milling cutter is used, the cutter handle is arranged on a numerical control main shaft of a milling machine, and then the cutter head is used for machining a workpiece to be machined.

However, the tool bit is easy to wear after being used for a long time, and the tool bit and the tool holder in the prior art are often integrally formed or welded and fixed, so that the tool bit is not easy to be detached from the tool holder, i.e., the tool bit is not easy to be replaced, and therefore the improvement is needed.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a T type milling cutter convenient to change tool bit, it has the advantage of being convenient for dismantle the tool bit with the handle of a knife with the change tool bit.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a T type milling cutter convenient to change tool bit, includes the handle of a knife and connects in the tool bit of handle of a knife tip, the tool bit is along its axle center fixedly connected with connecting rod, the handle of a knife is equipped with along its axle center and supplies the connecting rod adaptation to insert the connecting hole of establishing, connecting rod and handle of a knife run through and are equipped with the pinhole, inserting of downthehole adaptation of pinhole is equipped with the round pin axle, handle of a knife outside slidable cover is equipped with a lag section of thick bamboo that is used for the closing cap pinhole, the handle of a knife is located the pinhole and is equipped with down the spacing ring towards.

Through adopting above-mentioned technical scheme, when the tool bit is dismantled to needs, upwards slide the protective sleeve towards upper limit ring for the protective sleeve no longer covers the pinhole, can be afterwards with the ejecting pinhole of round pin axle, can take out the connecting rod from the connecting hole afterwards, can accomplish the dismantlement of tool bit and handle of a knife, convenient operation.

When needs installation tool bit, insert earlier the connecting rod and establish to the connecting hole in, insert when the connecting rod and establish to connecting hole bottom after, pinhole coaxial on handle of a knife and the connecting rod, later with the protective sleeve section of thick bamboo towards last spacing ring slip, make the pinhole expose, later the manual work inserts the round pin axle and establishes to the pinhole in, loosen the protective sleeve section of thick bamboo, later the protective sleeve section of thick bamboo is automatic down under its self action of gravity, make the protective sleeve cover pinhole again, can make the round pin axle thereafter can not slide from the pinhole by oneself, stable state, can realize the installation of tool bit and handle of a knife, and convenient operation.

The dismouting of tool bit and handle of a knife can be realized to the present case, avoids need abandoning tool bit and handle of a knife wholly after tool bit wearing and tearing are serious, only needs to change the tool bit now, can not waste the handle of a knife, more economic environmental protection.

Further, the handle of a knife is located that one side cover that the protective sleeve back of the body turned to the tool bit is equipped with last spacing ring, go up spacing ring and protective sleeve between be equipped with and be used for the spacing elastic component that the protective sleeve promotes towards lower spacing ring.

Through adopting above-mentioned technical scheme, spacing elastic component can be with the more stable butt of protective sleeve cover at lower spacing ring roof, can make the state of protective sleeve cover pinhole more stable, can further make the round pin axle be difficult for slipping from the pinhole by oneself.

Further, the upper limiting ring is in threaded connection with the cutter handle.

Through adopting above-mentioned technical scheme, the tensioning degree of spacing elastic component can be adjusted in order to adjust the position of spacing ring for the handle of a knife on rotatable spacing ring.

Furthermore, a plurality of anti-skid protrusions are uniformly distributed on the outer side wall of the upper limiting ring along the circumferential direction of the upper limiting ring.

Through adopting above-mentioned technical scheme, can promote the coefficient of friction of spacing ring lateral wall, can be so that the staff rotate the upper limit ring time hand be difficult for with last spacing ring lateral wall take place the slippage, promoted to rotate the stability of controlling of spacing ring in-process.

Further, the end wall of the connecting rod, which faces away from the cutter head, is provided with a guide surface.

Through adopting above-mentioned technical scheme, can promote and insert the convenience of establishing to the connecting hole in-process with the connecting rod, promote the installation effectiveness of tool bit and handle of a knife.

Furthermore, the outer side wall of the connecting rod is provided with a plurality of force bearing convex strips, the length directions of the force bearing convex strips are all parallel to the axial direction of the connecting rod, and the inner wall of the connecting hole is provided with a plurality of force bearing grooves for the corresponding force bearing convex strips to be matched and inserted.

Through adopting above-mentioned technical scheme, the atress of round pin axle can be dividedly carried out to the load sand grip, can make the actual cutting in-process round pin axle of tool bit can not bear torsion alone to make the difficult fracture of round pin axle, promoted the life-span of round pin axle.

Furthermore, a plurality of force bearing convex strips are uniformly arranged along the axial direction of the outer wall of the connecting rod.

By adopting the technical scheme, the stress of the plurality of bearing convex strips can be more uniform.

Furthermore, one end of the knife handle close to the knife head is in a circular truncated cone shape.

By adopting the technical scheme, the tool bit can be used in the actual cutting process, the generated waste chips are not easy to vertically collide with the end wall of the tool holder and then return to the surface of a workpiece, and the waste chips can be enabled to collide with the inclined side wall and then splash towards the outer side of the workpiece under the action of the circular truncated cone-shaped inclined side wall.

To sum up, the utility model discloses following beneficial effect has:

1. the cutter head is fixedly connected with a connecting rod along the axis of the cutter head, the cutter handle is provided with a connecting hole along the axis of the cutter handle, the connecting rod is inserted into the connecting hole in a matching manner, the connecting rod and the cutter handle are provided with a pin hole in a penetrating manner, a pin shaft is inserted into the pin hole in a matching manner, a protective sleeve for sealing the pin hole is slidably sleeved on the outer side of the cutter handle, a lower limiting ring is fixedly sleeved on one side of the cutter handle, which is positioned in the pin hole and faces; when the tool bit needs to be disassembled, the protecting sleeve slides upwards towards the upper limiting ring, so that the pin hole is not covered by the protecting sleeve any more, the pin shaft can be ejected out of the pin hole, the connecting rod can be pulled out of the connecting hole, and the tool bit and the tool handle can be disassembled, so that the operation is convenient; when a tool bit needs to be installed, the connecting rod is inserted into the connecting hole, after the connecting rod is inserted to the bottom of the connecting hole, the pin holes in the tool handle and the connecting rod are coaxial, then the protecting sleeve slides towards the upper limiting ring to expose the pin hole, then the pin shaft is manually inserted into the pin hole, the protecting sleeve is loosened, then the protecting sleeve automatically descends under the action of self gravity, the pin hole is sealed by the protecting sleeve again, the pin shaft cannot automatically slide away from the pin hole, the state is stable, the tool bit and the tool handle can be installed, and the operation is convenient; according to the scheme, the tool bit and the tool handle can be disassembled and assembled, the situation that the tool bit and the whole tool handle need to be discarded after the tool bit is seriously abraded is avoided, the tool handle is not wasted due to the fact that the tool bit is only required to be replaced, and the tool handle is more economical and environment-friendly;

2. an upper limiting ring is sleeved on one side, opposite to the tool bit, of the tool shank, and a limiting elastic piece used for pushing the protective sleeve towards the lower limiting ring is arranged between the upper limiting ring and the protective sleeve; spacing elastic component can be with the more stable butt of a protection sleeve section of thick bamboo at lower spacing ring roof, can make the state of a protection sleeve section of thick bamboo closing cap pinhole more stable, can further make the round pin axle be difficult for slipping from the pinhole by oneself.

Drawings

FIG. 1 is a schematic structural diagram of the present embodiment;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a sectional view of the present embodiment for showing the connection relationship between the connecting rod and the tool holder.

In the figure: 1. a knife handle; 11. a cutter head; 12. a connecting rod; 120. connecting holes; 13. a guide surface; 2. a pin shaft; 20. a pin hole; 21. a protective sleeve; 22. a lower limit ring; 23. an upper limiting ring; 24. anti-skid projections; 25. a limiting elastic part; 3. force bearing convex strips; 30. bearing groove.

Detailed Description

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

Example (b):

the utility model provides a T type milling cutter convenient to change tool bit, refers to fig. 1, and it includes handle of a knife 1 and connects in the tool bit 11 of handle of a knife 1 tip, and tool bit 11 is equipped with along its axle center fixedly connected with connecting rod 12 along its axle center, and handle of a knife 1 is equipped with along its axle center and supplies connecting rod 12 adaptation to insert the connecting hole 120 of establishing. One end of the knife handle 1 close to the knife head 11 is in a circular truncated cone shape.

Referring to fig. 2, a plurality of force bearing convex strips 3 are uniformly distributed on the outer side wall of the connecting rod 12 along the axial direction, and the force bearing convex strips 3 and the connecting rod 12 are integrally formed. The length directions of the plurality of force bearing convex strips 3 are all parallel to the axial direction of the connecting rod 12, the inner wall of the connecting hole 120 is provided with a plurality of force bearing grooves 30, and the plurality of force bearing convex strips 3 are all inserted into the corresponding force bearing grooves 30 in a matching manner.

Referring to fig. 3, the end wall of the connecting rod 12 facing away from the cutting head 11 (see fig. 1) is provided with a guide surface 13. Connecting rod 12 and handle of a knife 1 run through and are equipped with pinhole 20, and the interpolation of adaptation is equipped with round pin axle 2 in the pinhole 20, and the slidable cover in the handle of a knife 1 outside is equipped with protection sleeve 21, and protection sleeve 21 is used for the closing cap pinhole 20. One side, located at the pin hole 20, of the tool shank 1 and facing the tool bit 11 is sleeved with a lower limiting ring 22, and the lower limiting ring 22 is welded and fixed with the tool shank 1. The bottom wall of the protective sleeve 21 abuts against the top wall of the lower retainer 22.

Referring to fig. 3, the side, opposite to the tool bit 11, of the protective sleeve 21 of the tool holder 1 is provided with an upper limiting ring 23 in a threaded sleeve manner, a plurality of anti-skidding protrusions 24 are uniformly distributed on the outer side wall of the upper limiting ring 23 along the circumferential direction of the upper limiting ring, and the anti-skidding protrusions 24 and the upper limiting ring 23 are integrally formed. Be equipped with spacing elastic component 25 between last spacing ring 23 and the protective sleeve 21, spacing elastic component 25 preferred be the spring, the preferred cover of spacing elastic component 25 is established in the handle of a knife 1 outside, and spacing elastic component 25 is used for promoting protective sleeve 21 towards lower spacing ring 22.

The working principle is as follows: when the tool bit 11 needs to be disassembled, the protecting sleeve 21 slides upwards towards the upper limiting ring 23, so that the protecting sleeve 21 does not cover the pin hole 20 any more, the pin shaft 2 can be ejected out of the pin hole 20, the connecting rod 12 can be pulled out of the connecting hole 120, the tool bit 11 and the tool shank 1 can be disassembled, and the operation is convenient.

When the tool bit 11 needs to be installed, the connecting rod 12 is inserted into the connecting hole 120, the force-bearing convex strips 3 are inserted into the corresponding force-bearing grooves 30, after the connecting rod 12 is inserted into the bottom of the connecting hole 120, the pin holes 20 on the tool holder 1 and the connecting rod 12 are coaxial, the protecting sleeve 21 slides towards the upper limiting ring 23, the pin holes 20 are exposed, the limiting elastic pieces 25 shrink at the moment, the pin shaft 2 is manually inserted into the pin holes 20, the protecting sleeve 21 is loosened, then the limiting elastic pieces 25 recover deformation, the protecting sleeve 21 can automatically descend under the action of gravity and the thrust of the limiting elastic pieces 25, the pin holes 20 are sealed by the protecting sleeve 21 again, the tool bit 2 cannot automatically slide away from the pin holes 20, the state is stable, the installation of the tool bit 11 and the tool holder 1 can be achieved, and the operation is convenient.

The present case can realize the dismouting of tool bit 11 and handle of a knife 1, avoids needing to abandon tool bit 11 and handle of a knife 1 wholly after 11 wearing and tearing of tool bit are serious, only needs to change tool bit 11 now, can not waste handle of a knife 1, more economic environmental protection.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a T type milling cutter convenient to change tool bit, includes handle of a knife (1) and connects in tool bit (11) of handle of a knife (1) tip, its characterized in that: tool bit (11) are along its axle center fixedly connected with connecting rod (12), handle of a knife (1) is equipped with along its axle center and supplies connecting rod (12) adaptation to insert connecting hole (120) of establishing, connecting rod (12) and handle of a knife (1) run through and are equipped with pinhole (20), inserting of pinhole (20) interior adaptation is equipped with round pin axle (2), handle of a knife (1) outside slidable cover is equipped with a protecting sleeve section of thick bamboo (21) that is used for closing cap pinhole (20), handle of a knife (1) is located pinhole (20) and is equipped with down spacing ring (22) towards the fixed cover in one side of tool bit (11), the roof of spacing ring (22) is under protecting sleeve section of thick bamboo (21) diapire butt.

2. A T-shaped milling cutter for facilitating bit replacement as set forth in claim 1, wherein: one side cover that handle of a knife (1) is located protective sleeve (21) dorsad tool bit (11) is equipped with upper limit ring (23), be equipped with between upper limit ring (23) and protective sleeve (21) and be used for with protective sleeve (21) down spacing elastic component (25) that spacing ring (22) promoted down.

3. A T-shaped milling cutter for facilitating bit replacement as set forth in claim 2, wherein: the upper limiting ring (23) is in threaded connection with the cutter handle (1).

4. A T-shaped milling cutter for facilitating bit replacement as set forth in claim 3, wherein: and a plurality of anti-skid protrusions (24) are uniformly distributed on the outer side wall of the upper limiting ring (23) along the circumferential direction.

5. A T-shaped milling cutter for facilitating bit replacement as set forth in claim 1, wherein: the end wall of the connecting rod (12) back to the cutter head (11) is provided with a guide surface (13).

6. A T-shaped milling cutter for facilitating bit replacement as set forth in claim 1, wherein: the connecting rod (12) lateral wall is equipped with a plurality of load sand grip (3), and is a plurality of the length direction of load sand grip (3) all with the axial direction parallel of connecting rod (12), connecting hole (120) inner wall is equipped with a plurality of corresponding load sand grip (3) adaptations of confession and inserts load groove (30) of establishing.

7. A T-shaped milling cutter for facilitating bit replacement as set forth in claim 6, wherein: a plurality of force bearing convex strips (3) are uniformly arranged along the axial direction of the outer wall of the connecting rod (12).

8. A T-shaped milling cutter for facilitating bit replacement as set forth in claim 1, wherein: one end of the knife handle (1) close to the knife head (11) is in a circular truncated cone shape.