CN210731121U

CN210731121U - Drill bit for machining of built-in cutting fluid injection structure

Info

Publication number: CN210731121U
Application number: CN201921369283.1U
Authority: CN
Inventors: 黄凌锋
Original assignee: Suzhou Tianyin Tengda Mechanical And Electrical Engineering Co Ltd
Current assignee: Suzhou Tianyin Tengda Mechanical And Electrical Engineering Co Ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-06-12
Anticipated expiration: 2029-08-22

Abstract

The utility model discloses a drill bit is used in machining of built-in cutting fluid injection structure, including drill bit body, mounting panel and cutting edge, the drill bit body includes dead lever and drilling rod, the top at the transport box is fixed to the mounting panel, feed liquor pipe and first sap cavity are linked together, the below in first sap cavity is provided with the second sap cavity, the surface and the inside at the dead lever are seted up respectively to feed liquor hole and main entrance, and the bottom of main entrance and the top of reposition of redundant personnel passageway are linked together, the cutting edge is fixed on the drilling rod, and the surface of cutting edge is provided with first tangent plane and second tangent plane respectively. This drill bit for machining of built-in cutting fluid injection structure, through the mode of built-in cutting fluid spraying structure, utilize drilling rod self to rotate as the jet power source, be convenient for with the cutting fluid spout on the third tangent plane of never with the work piece contact, both guaranteed the real-time accurate of spraying the position, can ensure again that work piece hole internal surface can not influence the efficiency that the cutting fluid sprayed, design more rationally.

Description

Drill bit for machining of built-in cutting fluid injection structure

Technical Field

The utility model relates to a relevant technical field of machining specifically is a drill bit is used in machining of built-in cutting fluid injection structure.

Background

The drill bit is one of cutter in the machining field, the application in the machining field is very extensive, in current drill bit structure, be three sword formula structures mostly, be connected through the whole fixed rod portion on its top of drill bit and mechanical equipment, the drill rod part contacts with the workpiece surface who takes drilling, high-speed rotation through the drill bit and the back-and-forth movement under mechanical equipment control of oneself, realize drilling and purposes such as enlarged aperture operation, because the drill bit itself is metallic alloy material, so can produce a large amount of heats at drilling process, if the wearing and tearing that can cause the drill bit influence follow-up use untimely cooling then, consequently, current drill bit still exists following problem when in-service use:

1. in order to ensure that the self sufficient heat dissipation and the cutting process are smoother, the existing drill bit structure mostly uses a corresponding cutting fluid spraying structure in mechanical equipment, and the whole drill bit is subjected to cutting fluid spraying operation from the outside, but the structural design has the defects that the spraying angle is fixed and inconvenient, the fixed spraying angle cannot realize accurate spraying along with the extension of the drill bit in a workpiece, and a large amount of cutting fluid is easily wasted;

2. among the current drill bit structure, the part can be in its inside single cutting fluid flow channel that sets up, the rethread sets up the play liquid hole in avris or bottom and derives the cutting fluid, realizes the purpose of spraying the cutting fluid in real time, but this type of structural design's shortcoming lies in that the drill bit is when carrying out drilling operation, no matter its bottom or limit lateral wall, all can keep the state of highly laminating with the work piece, it is also the same in the play liquid hole that the drill bit surface was seted up, consequently cause the cutting fluid to go out liquid efficiency lower under the shutoff effect of work piece hole inner wall easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a drill bit for machining with a built-in cutting fluid injection structure, which aims to solve the problems that the external spraying angle is fixed and inconvenient in the cutting fluid spraying structure in the existing drill bit proposed in the background technology, and the fixed spraying angle cannot realize accurate spraying and easily causes a great amount of waste of the cutting fluid along with the extension of the drill bit in a workpiece; the built-in cutting fluid is easy to cause the problem of lower fluid outlet efficiency under the plugging action of the inner wall of the hole of the workpiece.

In order to achieve the above object, the utility model provides a following technical scheme: a drill bit with a built-in cutting fluid injection structure for machining comprises a drill bit body, a mounting plate and a cutting edge, the drill bit body comprises a fixed rod and a drill rod, the bottom end of the fixed rod is fixedly connected with the top end of the drill rod, and the upper half section of the fixed rod is provided with a conveying box, the mounting plate is fixed at the top end of the conveying box, and the side of the conveying box is connected with a liquid inlet pipe which is communicated with a first liquid cavity, the first liquid cavity is arranged at the upper half section in the conveying box, a second liquid cavity is arranged below the first liquid cavity and is arranged at the lower half section inside the conveying box, the second liquid cavity is communicated with the main channel through a liquid inlet hole, the liquid inlet hole and the main channel are respectively arranged on the surface and inside the fixed rod, and the bottom end of the main channel is communicated with the top end of the shunt channel, the cutting edge is fixed on the drill rod, and the surface of the cutting edge is provided with a first tangent plane and a second tangent plane respectively.

Preferably, the first liquid cavity is internally provided with a paddle plate which is horizontally distributed, and the center of the paddle plate is fixed on the fixing rod.

Preferably, the top end of the second liquid cavity is communicated with the bottom end of the first liquid cavity through a communication channel, and the communication channel and the liquid inlet pipe are symmetrically distributed around the central line of the paddle board.

Preferably, the number of the flow dividing channels is 3, and the flow dividing channels are distributed on the drill rod and the fixing rod at equal angles relative to the center line of the drill rod.

Preferably, the inclination direction of the second tangent plane is opposite to the inclination direction of the first tangent plane, a third tangent plane arranged on the surface of the cutting edge is arranged below the second tangent plane, and the inclination direction of the third tangent plane is opposite to the inclination direction of the second tangent plane.

Preferably, a liquid outlet hole is formed in the third section and communicated with the flow dividing channel through the first cavity and the second cavity, and an included angle between the first cavity and the second cavity is an obtuse angle.

Compared with the prior art, the beneficial effects of the utility model are that: according to the machining drill bit with the built-in cutting fluid spraying structure, the drill rod is used as a spraying power source by utilizing the rotation of the drill rod in a mode of the built-in cutting fluid spraying structure, so that the cutting fluid is conveniently sprayed out from a third section which is not in contact with a workpiece, the real-time accuracy of a spraying position is ensured, the efficiency of spraying the cutting fluid on the inner surface of a hole of the workpiece cannot be influenced, and the design is more reasonable;

1. the blade plate, the first liquid cavity, the second liquid cavity and the communicating channel are designed in an equal structure, so that the blade plate is driven to synchronously rotate at high speed by utilizing the high-speed rotation of the drill bit, external cutting fluid is conducted by the principle of water delivery of an impeller in a water pump, and the complete cutting fluid is pressurized, sprayed and conveyed in each channel;

2. the position structure design of the three sections ensures that when the drill rod drills a workpiece, the first section and the second section on the adjacent cutting edge form a region contacted with the workpiece, and the side of the region, the closed region formed by the third section and the surface of the drill rod do not contact with the workpiece, so that the cutting fluid sprayed out from the third section is not blocked by the workpiece, and sufficient cutting fluid can be ensured to be used for heat dissipation between the surface of the drill bit and the workpiece.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of the cross-sectional structure of the conveying box of the present invention;

FIG. 3 is a schematic view of the top cross-section structure of the conveying box of the present invention;

fig. 4 is a schematic view of the drill rod elevation section structure of the present invention.

In the figure: 1. a drill bit body; 2. fixing the rod; 3. a drill stem; 4. a transport box; 5. mounting a plate; 6. a liquid inlet pipe; 7. a first fluid chamber; 71. a paddle board; 72. a communicating channel; 8. a second fluid chamber; 9. a liquid inlet hole; 10. a main channel; 11. a flow dividing channel; 12. a cutting edge; 13. a first section; 14. a second section; 141. a third section; 142. a liquid outlet hole; 143. a first cavity; 144. a second cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a drill bit with a built-in cutting fluid injection structure for machining comprises a drill bit body 1, a fixed rod 2, a drill rod 3, a conveying box 4, a mounting plate 5, a fluid inlet pipe 6, a first fluid cavity 7, a paddle plate 71, a communication channel 72, a second fluid cavity 8, a fluid inlet hole 9, a main channel 10, a diversion channel 11, a cutting edge 12, a first tangent plane 13, a second tangent plane 14, a third tangent plane 141, a fluid outlet hole 142, a first cavity 143 and a second cavity 144, wherein the drill bit body 1 comprises the fixed rod 2 and the drill rod 3, the bottom end of the fixed rod 2 is fixedly connected with the top end of the drill rod 3, the conveying box 4 is mounted on an upper half bearing of the fixed rod 2, the mounting plate 5 is fixed at the top end of the conveying box 4, the lateral side of the conveying box 4 is connected with the fluid inlet pipe 6, the fluid inlet pipe 6 is communicated with the first fluid cavity 7, the first fluid cavity 7 is arranged on an upper half section inside the conveying box 4, the second fluid cavity 8, and the second liquid chamber 8 is seted up in the inside lower half section of transport box 4 to second liquid chamber 8 is linked together through feed liquor hole 9 and main passage 10, and feed liquor hole 9 and main passage 10 are seted up respectively in the surface and the inside of dead lever 2, and the bottom of main passage 10 and the top of reposition of redundant personnel passageway 11 are linked together, and cutting edge 12 is fixed on drilling rod 3, and the surface of cutting edge 12 is provided with first tangent plane 13 and second tangent plane 14 respectively.

The horizontal distribution paddle plates 71 are arranged in the first liquid cavity 7, the centers of the paddle plates 71 are fixed on the fixing rod 2, the top end of the second liquid cavity 8 is communicated with the bottom end of the first liquid cavity 7 through the communicating channel 72, the communicating channel 72 and the liquid inlet pipe 6 are symmetrically distributed about the center line of the paddle plates 71, the drill bit body 1 can be in a high-speed rotating state under the driving of a driving mechanism in the equipment, the fixing rod 2 in the figure 2 can drive the paddle plates 71 to synchronously rotate in the first liquid cavity 7 during rotation, the first liquid cavity 7 is in a negative pressure state at the moment, and the cutting liquid can be led into the first liquid cavity 7 from the outside through the liquid inlet pipe 6.

3 diversion channels 11 are distributed at equal angles relative to the center line of the drill rod 3, the diversion channels 11 are distributed on the drill rod 3 and the fixing rod 2, a liquid outlet hole 142 is formed in the third section 141, the liquid outlet hole 142 is communicated with the diversion channel 11 through a first cavity 143 and a second cavity 144, an included angle between the first cavity 143 and the second cavity 144 is an obtuse angle, cutting liquid in the first liquid cavity 7 can enter the second liquid cavity 8 along a communication channel 72 in fig. 2, can enter the main channel 10 along a liquid inlet hole 9 in fig. 2 and 3, can enter the diversion channel 11 through the main channel 10, can enter the second cavity 144 and the first cavity 143 in fig. 4, and is finally sprayed out from the liquid outlet hole 142.

The inclination direction of the second tangent plane 14 is opposite to that of the first tangent plane 13, a third tangent plane 141 arranged on the surface of the cutting edge 12 is arranged below the second tangent plane 14, the inclination direction of the third tangent plane 141 is opposite to that of the second tangent plane 14, the drill rod 3 rotates anticlockwise, so that the first tangent plane 13 and the second tangent plane 14 are directly contacted with the workpiece, the third tangent plane 141 is in a cutting dead zone, and the third tangent plane 141 is not contacted with the workpiece, so that the surface of the workpiece cannot block the liquid outlet of the liquid outlet hole 142.

The working principle is as follows: firstly, the fixed rod 2 of the drill body 1 in fig. 1 can be installed at a designated position of cutting equipment, and the connection mode of the fixed rod 2 and the fixed rod is the same as that of the existing drill and the existing equipment, so detailed description is omitted, before actual cutting is started, a user can fix the installation plate 5 on the equipment by using fixing parts such as bolts and the like to ensure that the conveying box 4 is kept in a non-rotating state, then the liquid inlet pipe 6 is communicated with an external cutting liquid storage point, the equipment is powered on to operate, the drill body 1 is in a high-speed rotating state under the drive of a driving mechanism in the equipment, and the fixed rod 2 in fig. 2 drives the paddle boards 71 to synchronously rotate in the first liquid cavity 7 while rotating, at the moment, the inside of the first liquid cavity 7 is in a negative pressure state, and the liquid inlet pipe 6 can guide the cutting liquid into the first liquid cavity 7;

when the drill bit body 1 in fig. 1 drills a workpiece, as shown in fig. 4, because the drill rod 3 rotates counterclockwise, the first tangent plane 13 and the second tangent plane 14 directly contact the workpiece, and the third tangent plane 141 is in a dead cutting zone, the third tangent plane 141 does not contact the workpiece, and therefore the surface of the workpiece does not block the liquid outlet of the liquid outlet hole 142.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a drill bit for machining of built-in cutting fluid injection structure, includes drill bit body (1), mounting panel (5) and cutting edge (12), its characterized in that: the drill bit body (1) comprises a fixing rod (2) and a drill rod (3), the bottom end of the fixing rod (2) is fixedly connected with the top end of the drill rod (3), the upper half section of the fixing rod (2) is provided with a conveying box (4), a mounting plate (5) is fixed at the top end of the conveying box (4), the side of the conveying box (4) is connected with a liquid inlet pipe (6), the liquid inlet pipe (6) is communicated with a first liquid cavity (7), the first liquid cavity (7) is arranged at the upper half section inside the conveying box (4), a second liquid cavity (8) is arranged below the first liquid cavity (7), the second liquid cavity (8) is arranged at the lower half section inside the conveying box (4), the second liquid cavity (8) is communicated with a main channel (10) through a liquid inlet hole (9), the liquid inlet hole (9) and the main channel (10) are respectively arranged on the surface and inside the fixing rod (2), the bottom end of the main channel (10) is communicated with the top end of the diversion channel (11), the cutting edge (12) is fixed on the drill rod (3), and the surface of the cutting edge (12) is provided with a first tangent plane (13) and a second tangent plane (14) respectively.

2. A machining drill with a built-in cutting fluid jetting structure according to claim 1, characterized in that: the first liquid cavity (7) is internally provided with a paddle plate (71) which is horizontally distributed, and the center of the paddle plate (71) is fixed on the fixed rod (2).

3. A machining drill with a built-in cutting fluid jetting structure according to claim 2, characterized in that: the top end of the second liquid cavity (8) is communicated with the bottom end of the first liquid cavity (7) through a communicating channel (72), and the communicating channel (72) and the liquid inlet pipe (6) are symmetrically distributed around the central line of the paddle board (71).

4. A machining drill with a built-in cutting fluid jetting structure according to claim 1, characterized in that: the number of the flow distribution channels (11) is 3 about the center line of the drill rod (3) in an equal angle distribution mode, and the flow distribution channels (11) are distributed on the drill rod (3) and the fixing rod (2).

5. A machining drill with a built-in cutting fluid jetting structure according to claim 1, characterized in that: the inclination direction of the second tangent plane (14) is opposite to that of the first tangent plane (13), a third tangent plane (141) arranged on the surface of the cutting edge (12) is arranged below the second tangent plane (14), and the inclination direction of the third tangent plane (141) is opposite to that of the second tangent plane (14).

6. The drill bit for machining with a built-in cutting fluid jetting structure according to claim 5, characterized in that: the third section (141) is provided with a liquid outlet hole (142), the liquid outlet hole (142) is communicated with the flow dividing channel (11) through the first cavity (143) and the second cavity (144), and an included angle between the first cavity (143) and the second cavity (144) is an obtuse angle.