CN212761355U - Anti-drop milling cutter - Google Patents

Abstract

The utility model relates to an anticreep milling cutter relates to processing cutter technical field, and it includes handle of a knife, tool bit and fastening bolt, the thread groove has been seted up to the handle of a knife tip, set up the connecting hole that is linked together with the thread groove on the tool bit, fastening bolt passes the connecting hole and passes through threaded connection in the thread groove, the decurrent joint groove of opening has been seted up to the week side that the handle of a knife is located the thread groove, the tool bit is close to one side fixed be provided with of handle of a knife and forms joint complex joint piece with the joint groove. This application except utilizing fastening bolt to fix the tool bit on the handle of a knife, still utilizes the joint cooperation between joint piece and the joint groove, and it is fixed to carry out the double anticreep to tool bit and handle of a knife, improves the anticreep rate of tool bit.

Description

Anti-drop milling cutter

Technical Field

The application relates to the technical field of machining cutters, in particular to an anti-falling milling cutter.

Background

A tool is a tool used for cutting machining in machine manufacturing, and is also called a cutting tool. The cutting tool includes a face mill having a cutting edge disposed in a horizontal plane.

In order to facilitate replacement of the end milling cutter, in the related art, a bolt and thread connection mode is usually adopted, and a cutter head of the milling cutter is detachably fixed on a cutter handle.

According to the related technology, after the tool bit and the tool handle are used for a long time, looseness may occur between the tool bit and the tool handle, and the tool bit may be separated from the tool handle under the action of high-speed rotation and impact, so that safety accidents are caused, and a part to be improved exists.

SUMMERY OF THE UTILITY MODEL

In order to prevent that the tool bit from droing from the handle of a knife, improve the anticreep rate of tool bit, this application provides an anticreep milling cutter.

The application provides a anticreep milling cutter adopts following technical scheme:

the utility model provides an anticreep milling cutter, includes handle of a knife, tool bit and fastening bolt, the thread groove has been seted up to the handle of a knife tip, set up the connecting hole that is linked together with the thread groove on the tool bit, fastening bolt passes the connecting hole and passes through threaded connection in the thread groove, the decurrent joint groove of opening is seted up to the week side that the handle of a knife is located the thread groove, the tool bit is close to one side fixed be provided with of handle of a knife and forms joint complex joint piece with the joint groove.

Through adopting above-mentioned technical scheme, except utilizing fastening bolt to fix the tool bit on the handle of a knife, still utilize the joint cooperation between joint piece and the joint groove, it is fixed to carry out double anticreep to tool bit and handle of a knife, improves the anticreep rate of tool bit.

Preferably, the number of the clamping blocks is two along the radial symmetry of the tool bit, and the number of the clamping grooves is two along the radial symmetry of the tool handle.

Through adopting above-mentioned technical scheme, be provided with two with joint piece and joint groove correspondence, further improve fixed to the joint of tool bit.

Preferably, the joint groove includes vertical groove and horizontal groove, the joint piece slides and sets up in vertical inslot, the joint piece includes vertical piece and horizontal piece, horizontal piece and horizontal groove form the inlay card cooperation.

Through adopting above-mentioned technical scheme, during actual joint, peg graft at vertical inslot with the vertical piece on the joint piece earlier, then rotate certain angle for the horizontal block inlay card carries out limiting displacement to the tool bit in vertical direction in the horizontal groove, improves the connection fixity between tool bit and the handle of a knife.

Preferably, a countersunk groove communicated with the connecting hole is formed in one side, away from the knife handle, of the knife head, and the head of the fastening bolt is embedded into the countersunk groove.

Through adopting above-mentioned technical scheme, utilize countersunk groove, on the one hand, have the guard action to fastening bolt, on the other hand has location installation and spacing effect to fastening bolt.

Preferably, a centering conical surface is arranged between the head of the fastening bolt and the screw rod, and an abutting conical surface matched with the centering conical surface is arranged at the port of the cutter head located in the connecting hole.

Through adopting above-mentioned technical scheme, utilize the butt between centering conical surface and the butt conical surface, improve the centering effect and the fixed effect that fastening bolt and connecting hole are connected.

Preferably, the end of the horizontal block is provided with a guide chamfer.

By adopting the technical scheme, the horizontal block is conveniently inserted into the horizontal groove by utilizing the guide chamfer on the end part of the horizontal block.

Preferably, a first guide inclined plane is arranged at the joint of the vertical groove and the horizontal groove.

Through adopting above-mentioned technical scheme, utilize first guide inclined plane, the installer of further being convenient for pegs graft the horizontal piece in the horizontal groove.

Preferably, the notch of the tool shank located in the vertical groove is provided with a second guiding inclined surface.

Through adopting above-mentioned technical scheme, utilize the second guide inclined plane, the installer of being convenient for inserts vertical piece in the vertical groove.

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

the tool bit is fixed on the tool handle by the fastening bolt, and the tool bit and the tool handle are subjected to double anti-falling fixation by the clamping fit between the clamping block and the clamping groove, so that the anti-falling rate of the tool bit is improved;

with the help of guide chamfer, first guide inclined plane and second guide inclined plane, the installer of being convenient for fixes the tip at the tip of handle of a knife with the tool bit joint.

Drawings

Fig. 1 is a sectional view mainly showing the overall structure of the anti-drop milling cutter in the embodiment;

fig. 2 is a cross-sectional view of the present embodiment mainly showing a top view of the tool holder structure.

Reference numerals: 1. a knife handle; 11. a thread groove; 12. a clamping groove; 121. a vertical slot; 122. a horizontal groove; 2. a cutter head; 21. connecting holes; 22. a countersunk groove; 3. fastening a bolt; 4. a clamping block; 41. a vertical block; 42. a horizontal block; 421. guiding chamfering; 5. a first guide ramp; 6. a second guide ramp; 7. a middle conical surface; 8. abutting against the conical surface.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses anticreep milling cutter. Referring to fig. 1, the anti-falling milling cutter comprises a cutter handle 1, a cutter head 2 and a fastening bolt 3, wherein a thread groove 11 is formed in the center of the end part of the cutter handle 1, a connecting hole 21 communicated with the thread groove 11 is formed in the cutter head 2, the fastening bolt 3 passes through the connecting hole 21 and is connected in the thread groove 11 through a thread, two clamping grooves 12 with downward openings are formed in the periphery of the cutter handle 1 at the position of the thread groove 11, the two clamping grooves 12 are symmetrically arranged along the radial direction of the end part of the cutter handle 1, any one clamping groove 12 comprises a vertical groove 121 and a horizontal groove 122, one side of the cutter head 2 close to the cutter handle 1 is integrally formed with two clamping blocks 4, the two clamping blocks 4 correspond to the two clamping grooves 12, and any one clamping block 4 comprises a vertical block 41, the whole of this joint piece 4 slides and sets up in vertical groove 121, and horizontal piece 42 forms the inlay card cooperation with horizontal groove 122.

In actual use, slide earlier joint piece 4 on tool bit 2 and inlay and establish in vertical groove 121, then rotate to certain angle for horizontal piece 42 inlay card is in horizontal groove 122, accomplishes in advance fixed and prevent directly taking off the pine to tool bit 2, later, passes fastening bolt 3 connecting hole 21 and through threaded connection in thread groove 11, realizes promptly that the double anticreep to tool bit 2 and handle of a knife 1 is fixed, improves tool bit 2's anticreep rate.

Referring to fig. 1 and 2, in order to facilitate the clamping fixation of the clamping block 4 and the clamping groove 12, the end of the horizontal block 42 is provided with a guiding chamfer 421, the joint of the vertical groove 121 and the horizontal groove 122 is provided with a first guiding inclined plane 5, and the position of the knife handle 1 at the vertical downward notch of the vertical groove 121 is provided with a second guiding inclined plane 6.

One side of the tool bit 2, which is far away from the tool holder 1, is provided with a countersunk groove 22 communicated with the connecting hole 21, and the head of the fastening bolt 3 is embedded into the countersunk groove 22; and be provided with centering conical surface 7 between fastening bolt 3's head and the screw rod, tool bit 2 is located the port department of connector and is provided with the butt conical surface 8 with centering conical surface 7 looks adaptation, improves centering nature and the steadiness of fastening bolt 3 installation on tool bit 2.

The implementation principle of the anti-drop milling cutter in the embodiment of the application is as follows:

in actual use, utilize second guide inclined plane 6, slide earlier joint piece 4 on tool bit 2 and inlay and establish in vertical groove 121, then, utilize first guide inclined plane 5 and guide chamfer 421, with horizontal piece 42 at horizontal inslot 122 internal rotation to certain angle, make horizontal piece 42 inlay card in horizontal groove 122, accomplish the pre-fixing of tool bit 2 and prevent directly taking off the pine, afterwards, imbed fastening bolt 3 to countersunk head groove 22 in, then pass connecting hole 21, make centering conical surface 7 support tightly on butt conical surface 8, and through threaded connection in thread groove 11, it is fixed to realize the double anticreep of tool bit 2 and handle of a knife 1 promptly, improve the anticreep rate of tool bit 2.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides an anticreep milling cutter which characterized in that: including handle of a knife (1), tool bit (2) and fastening bolt (3), thread groove (11) have been seted up to handle of a knife (1) tip, set up connecting hole (21) that are linked together with thread groove (11) on tool bit (2), fastening bolt (3) pass connecting hole (21) and pass through threaded connection in thread groove (11), the week side that handle of a knife (1) is located thread groove (11) has seted up joint groove (12) that open side down, one side that tool bit (2) is close to handle of a knife (1) is fixed be provided with and forms joint complex joint piece (4) with joint groove (12).

2. The anti-drop milling cutter according to claim 1, wherein: the clamping blocks (4) are arranged symmetrically along the radial direction of the tool bit (2), and the clamping grooves (12) are arranged symmetrically along the radial direction of the tool handle (1).

3. The anti-drop milling cutter according to claim 1, wherein: the joint groove (12) comprises a vertical groove (121) and a horizontal groove (122), the joint block (4) is arranged in the vertical groove (121) in a sliding mode, the joint block (4) comprises a vertical block (41) and a horizontal block (42), and the horizontal block (42) and the horizontal groove (122) form a clamping and embedding fit.

4. The anti-drop milling cutter according to claim 3, wherein: one side of the tool bit (2) departing from the tool shank (1) is provided with a countersunk groove (22) communicated with the connecting hole (21), and the head of the fastening bolt (3) is embedded into the countersunk groove (22).

5. The anti-drop milling cutter according to claim 4, wherein: be provided with centering conical surface (7) between the head of fastening bolt (3) and the screw rod, tool bit (2) are located the port department of connecting hole (21) and are provided with butt conical surface (8) with centering conical surface (7) looks adaptation.

6. The anti-drop milling cutter according to claim 5, wherein: the end of the horizontal block (42) is provided with a guide chamfer (421).

7. The anti-drop milling cutter according to claim 6, wherein: and a first guide inclined plane (5) is arranged at the joint of the vertical groove (121) and the horizontal groove (122).

8. The anti-drop milling cutter according to claim 1, wherein: the knife handle (1) is provided with a second guide inclined plane (6) at the notch of the vertical groove (121).

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