CN217889628U

CN217889628U - Anti-loosening milling cutter

Info

Publication number: CN217889628U
Application number: CN202221338349.2U
Authority: CN
Inventors: 王辉
Original assignee: Shenzhen Xinminghui Diamond Tool Co ltd
Current assignee: Shenzhen Xinminghui Diamond Tool Co ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-11-25
Anticipated expiration: 2032-05-31

Abstract

The utility model discloses an anti-loosening milling cutter, handle of a knife and tool bit including interconnect, the terminal surface of the one end of handle of a knife is first connection face, the connecting hole has been seted up on the first connection face, the terminal surface that the tool bit is close to the handle of a knife is the second connection face, the second is connected and has been seted up the through-hole on the face, still includes the fastener, the one end of fastener is passed the through-hole and is fixed in the connecting hole, be equipped with first holding piece on the first connection face, it holds the piece to be equipped with the second on the second connection face, first holding piece and second hold the piece and can mutually support the locking to prevent relative rotation between handle of a knife and the tool bit. The utility model provides a pair of locking take off milling cutter can reduce the probability that the tool bit breaks away from the handle of a knife, has reduced the potential safety hazard.

Description

Anti-loosening milling cutter

Technical Field

The utility model belongs to the technical field of the cutting tool technique and specifically relates to an anti-loosening milling cutter is related to.

Background

The milling cutter is a processing cutter for cutting a metal workpiece, one end of the milling cutter is a cutter head for cutting the metal workpiece, the other end of the milling cutter is a cutter handle for installation, the cutter head is easier to damage than the cutter handle, and in order to improve the recycling rate of the cutter handle, a user separates the cutter head with a cutting edge from the cutter handle and then detachably installs the cutter head on the cutter handle, so that the cutter head can be directly replaced after the cutting edge of the cutter head is worn, and the handle does not need to be replaced. However, after long-time use, looseness may occur between the cutter head and the cutter handle, and the cutter head may be separated from the cutter handle under the action of high-speed rotation and impact, so that potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti-loosening milling cutter can reduce the probability that the tool bit breaks away from the handle of a knife, has reduced the potential safety hazard.

The utility model discloses a technical scheme that locking milling cutter adopted is:

the utility model provides an anti-loosening milling cutter, includes interconnect's handle of a knife and tool bit, the terminal surface of the one end of handle of a knife is first connection face, the connecting hole has been seted up on the first connection face, the terminal surface that the tool bit is close to the handle of a knife is the second connection face, the through-hole has been seted up on the second connection face, still includes the fastener, the one end of fastener is passed the through-hole and is fixed in the connecting hole, be equipped with first holding member on the first connection face, be equipped with the second holding member on the second connection face, first holding member and second holding member can mutually support the locking to prevent relative rotation between handle of a knife and the tool bit.

Preferably, the first blocking member is a protrusion, the second blocking member is a groove, and the protrusion is located in the groove to block each other.

Preferably, the cross section of the protrusion is isosceles trapezoid, the width of the top of the protrusion is smaller than that of the bottom of the protrusion, and the cross section of the groove is isosceles trapezoid, and the width of the opening of the groove is larger than that of the bottom of the groove.

As the preferred scheme, the number of the bulges is multiple, the bulges are uniformly distributed around the through hole, and the grooves and the bulges are correspondingly arranged around the connecting hole.

According to the preferable scheme, the fastener is a bolt, the through hole is a stepped hole, the connecting hole is a threaded hole, one side, away from the second connecting surface, of the stepped hole is a large hole, a nut of the bolt is located in the large hole, and the bolt is in threaded connection with the connecting hole.

The utility model discloses a locking milling cutter's beneficial effect is: the cutter head is connected and fixed with the cutter handle through a fastener; the first blocking piece on the tool bit and the second blocking piece on the tool handle are mutually matched and locked to prevent the tool bit and the tool handle from rotating as a center, and further prevent the fastener from loosening; thereby fixing the tool bit and the tool handle from two mutually perpendicular directions, obviously reducing the probability that the tool bit breaks away from the tool handle and reducing the potential safety hazard.

Drawings

Fig. 1 is an exploded view of the anti-loose milling cutter of the present invention.

Fig. 2 is a schematic view of the cutter head of the anti-loose milling cutter of the present invention.

Detailed Description

The invention will be further elucidated and described with reference to a specific embodiment and a drawing of the description, in which:

referring to fig. 1 to 2, an anti-loose milling cutter includes a cutter handle 10, a cutter head 20 and a fastener 30, wherein the cutter head 20 is detachably mounted on the cutter handle 10 through the fastener 30, an end surface of the cutter handle 10 near one end of the cutter head 20 is a first connecting surface 11, a connecting hole 12 is formed in the first connecting surface 11, a second connecting surface 21 is formed on one side of the cutter head 20 near the first connecting surface 11, a through hole 22 is formed in the center of the second connecting surface 21, and one end of the fastener 30 passes through the through hole 22 and is fixed in the connecting hole 12. The first connecting surface 11 is provided with a first blocking member, the second connecting surface 21 is provided with a second blocking member, the first connecting member 13 and the second connecting member 23 can be matched and locked with each other, and when the tool bit 20 is used for cutting a metal workpiece, the tool bit 20 can be prevented from rotating under the action of force in the tangential direction of the metal workpiece after being used for a long time, so that the fastener 30 is not loosened. The cutter head 20 and the cutter handle 10 are fixed in two mutually perpendicular directions, so that the probability that the cutter head 20 is separated from the cutter handle 10 is remarkably reduced, and potential safety hazards are reduced.

The first blocking member is a groove 13, the second blocking member is a protrusion 23, and the protrusion 23 is located in the groove 13 to block each other. The cutting head 20 is engaged with the groove 13 of the holder 10 via the protrusion 23, so that the cutting head 20 is restricted from rotating with respect to the holder 10 centering on the fastening member 30, further preventing the fastening member 30 from loosening.

The cross section of the protrusion 23 is isosceles trapezoid, the width of the top is smaller than that of the bottom, and the cross section of the groove 13 is isosceles trapezoid, and the width of the opening is larger than that of the bottom. Thereby facilitating the snapping of the projection 23 into the recess 13.

The number of the bulges 23 and the number of the grooves 13 can be multiple, the bulges 23 are uniformly distributed around the through hole 22, and the grooves 13 and the bulges 23 are correspondingly arranged around the connecting hole 11. Thereby improving the stability of the connection between the tool tip 20 and the tool shank 10.

Fastener 30 is the bolt, and through-hole 22 is the shoulder hole, connecting hole 12 screw holes, and the one side that the second was connected face 21 was kept away from to the shoulder hole is the macropore, and the nut of bolt is located the macropore, and the threaded end of bolt is located the screw hole, bolt and screw hole threaded connection to through protruding 23 and recess 13 locking back of mutually supporting, thereby can effectively prevent to drive the bolt and deviate from the screw hole because of the long-time rotation back of tool bit.

In summary, the tool bit 20 is installed at one end of the tool holder 10, the tool bit 20 is fixed on the tool holder 10 through the fastener 30, and the tool bit 20 is locked with the groove 13 of the tool holder 10 through the protrusion 23, so that the tool bit 20 is prevented from driving the fastener 30 to be loosened after being rotated for a long time, the probability of tool bit separation is reduced, and potential safety hazards are reduced.

It should be finally noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit the scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides an anti-loosening milling cutter, includes interconnect's handle of a knife and tool bit, its characterized in that, the terminal surface of the one end of handle of a knife is first connection face, the connecting hole has been seted up on the first connection face, the terminal surface that the tool bit is close to the handle of a knife is the second connection face, the through-hole has been seted up on the second connection face, still include the fastener, the one end of fastener is passed the through-hole and is fixed in the connecting hole, be equipped with first holding part on the first connection face, be equipped with the second holding part on the second connection face, first holding part and second holding part can mutually support the locking to prevent relative rotation between handle of a knife and the tool bit, first holding part is the arch, the second holding part is the recess, the arch is located the recess to block each other, bellied cross-section is that the width of isosceles trapezoid and top is less than the width of bottom, the cross-section of recess is that isosceles trapezoid and opening width is more than the bottom width.

2. The anti-loosening milling cutter according to claim 1, wherein the protrusions are provided in plural numbers and are uniformly arranged around the through hole, and the recesses and the protrusions are provided around the connecting hole correspondingly.

3. The anti-loosening milling cutter according to any one of claims 1 to 2, wherein the fastening member is a bolt, the through hole is a stepped hole, the connecting hole is a threaded hole, a side of the stepped hole away from the second connecting surface is a large hole, a nut of the bolt is located in the large hole, and the bolt is in threaded connection with the connecting hole.