CN216858337U

CN216858337U - Three-blade hard alloy drill bit with inner cooling oil hole

Info

Publication number: CN216858337U
Application number: CN202121392326.5U
Authority: CN
Inventors: 张卓翊
Original assignee: Zhuzhou Chutian Cemented Carbide Co ltd
Current assignee: Zhuzhou Chutian Cemented Carbide Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2022-07-01
Anticipated expiration: 2031-06-22

Abstract

The utility model discloses a three-blade inner-cooling oil hole hard alloy drill bit, which relates to the technical field of hole machining and comprises a cutter handle, a disassembly and assembly structure convenient to maintain, a three-blade structure with high applicability and a backflow prevention structure for preventing oil leakage, wherein an installation rod is arranged at the top end of the cutter handle, a mounting groove is formed in the central position of the top end of the installation rod, the disassembly and assembly structure is arranged between the installation rod and the cutter handle, an oil filling port is formed in one side of the installation rod, the three-blade structure is arranged on the outer wall of the cutter handle below the oil filling port, three baffles are arranged inside the cutter handle on one side of the oil filling port, and the backflow prevention structure is arranged inside the baffles. According to the utility model, the cutting edge of the cutter body contacts the workpiece to drill the workpiece, and meanwhile, the chip groove can quickly convey chips generated during drilling to one side, so that the chips are prevented from interfering with machining, and the structure is favorable for improving the applicability of the device.

Description

Three-blade hard alloy drill bit with inner cooling oil hole

Technical Field

The utility model relates to the technical field of hole machining, in particular to a three-blade hard alloy drill bit with an inner cooling oil hole.

Background

Along with the continuous development of industry, the spot facing work field, high efficiency operation is more and more important, and the drill bit exists a lot, generally is two sword drill bits, but the limitation that this drill bit exists is great, and this some aspect, this drill bit can't satisfy the requirement at all, and this needs to use three sword drill bits, and current three sword inner cooling oilhole carbide drill bits still have a lot of weak points.

Through retrieval, chinese patent No. CN209424600U, published 2019, 09.24, the publication suggests that "the blade tip 19 can reduce the friction area with the processing material, thereby reducing the friction heat generated by the blade 1," the shape of the novel trapezoidal inner cooling oil hole 5 reduces the cutting heat by increasing the ejection amount of the cooling oil, "the oil injection has backflow, which causes the waste of the cooling oil.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a three-blade hard alloy drill with an inner cooling oil hole, which aims to solve the problem of waste of cooling oil in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the three-blade hard alloy drill bit with the inner cooling oil hole comprises a tool shank, a disassembly and assembly structure convenient to maintain, a three-blade structure with high applicability and a backflow preventing structure for preventing oil leakage;

the mounting structure comprises a knife handle and a mounting rod, wherein the top end of the knife handle is provided with the mounting rod, the center of the top end of the mounting rod is provided with a mounting groove, and the dismounting structure is arranged between the mounting rod and the knife handle;

an oil filling port is formed in one side of the mounting rod, and the three-blade structure is arranged on the outer wall of the cutter handle below the oil filling port;

three baffles are arranged in the knife handle on one side of the oil filling port, and the backflow preventing structure is arranged in the baffles.

Preferably, the backflow preventing structure comprises a pore plate, the pore plate is arranged on the inner wall of the baffle, a limiting barrel is arranged at the top end of one side inside the baffle, one side inside the limiting barrel is connected with a return spring, and one end of the return spring is connected with an extension rod.

Preferably, the one end of extension rod extends to between spacing section of thick bamboo and the orifice plate, and the baffle is installed to the one end of extension rod.

Preferably, the dismouting structure includes thread piece, dead slot, external screw thread and sleeve, the bottom of installation pole is seted up in the dead slot, and the thread piece sets up in the top of handle of a knife, the external screw thread sets up in the outer wall of installation pole and handle of a knife, and the outer wall sliding connection of external screw thread has the sleeve.

Preferably, the top end of the screw block extends to the inside of the empty groove, and the screw block and the empty groove are connected through screw threads.

Preferably, three sword structures include blade, cutting edge and chip groove, the blade sets up the handle of a knife outer wall in oiling mouth below, and the bottom of blade is provided with three cutting edge.

Preferably, the bottom ends of the knife bodies between the cutting edges are provided with three chip flutes.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the utility model provides a cutter body, a cutting edge and a chip groove, wherein a drill bit is arranged on a device through a mounting groove by utilizing the cutter body, the cutting edge of the cutter body contacts a workpiece to drill the workpiece when the device starts to work, and meanwhile, the chip groove can quickly convey chips generated during drilling to one side to prevent the chips from interfering processing;

(2) the utility model provides a sleeve, an external thread and a mounting rod, wherein the sleeve is rotated by utilizing the sleeve, the sleeve can move towards the mounting rod under the matching of the external thread until the sleeve is separated from the limitation on a tool handle, then the tool handle is rotated, the tool handle can be completely taken down under the matching of a thread block and a hollow groove for replacement and maintenance, otherwise, the tool handle can be installed again, and the structure realizes the function of convenient maintenance;

(3) the utility model provides a hole channel, a pore plate and a baffle plate, wherein before the hole channel is used, cooling oil enters the hole channel, then passes through the pore plate and extrudes the baffle plate, so that an extension rod slides towards the inside of an extension cylinder, thereby extruding a return spring to deform, enabling the cooling oil to smoothly enter the hole channel, and enabling the baffle plate to recover the original shape under the reaction force of the return spring after the cooling oil is added.

Drawings

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

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic bottom view of the present invention;

FIG. 4 is a schematic top view of the present invention;

fig. 5 is an enlarged schematic view of a portion a in fig. 1 according to the present invention.

In the figure: 1. an orifice plate; 2. a baffle plate; 3. a duct; 4. a limiting cylinder; 5. a return spring; 6. an extension rod; 7. mounting grooves; 8. a disassembly and assembly structure; 801. a thread block; 802. an empty groove; 803. an external thread; 804. a sleeve; 9. a three-blade structure; 901. a blade body; 902. a blade; 903. a chip pocket; 10. mounting a rod; 11. a knife handle; 12. and an oil filling port.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: referring to fig. 1-5, the three-blade hard alloy drill bit with the inner cooling oil hole comprises a tool shank 11, a disassembly and assembly structure 8 convenient to maintain, a three-blade structure 9 with strong applicability and a backflow prevention structure for preventing oil leakage;

the top end of the knife handle 11 is provided with an installation rod 10, the center of the top end of the installation rod 10 is provided with an installation groove 7, and the dismounting structure 8 is arranged between the installation rod 10 and the knife handle 11;

an oil filling port 12 is formed in one side of the mounting rod 10, and the three-blade structure 9 is arranged on the outer wall of the cutter handle 11 below the oil filling port 12;

three baffles 2 are arranged in the knife handle 11 on one side of the oil injection port 12, and the backflow prevention structure is arranged in the baffles 2.

Referring to fig. 1-5, the three-blade inner-cooling oil hole hard alloy drill further comprises a backflow prevention structure, the backflow prevention structure comprises a hole plate 1, the hole plate 1 is arranged on the inner wall of a baffle 2, a limiting cylinder 4 is arranged at the top end of one side inside the baffle 2, one side inside the limiting cylinder 4 is connected with a return spring 5, and one end of the return spring 5 is connected with an extension rod 6;

one end of the extension rod 6 extends to a position between the limiting cylinder 4 and the pore plate 1, and one end of the extension rod 6 is provided with the baffle 2;

specifically, as shown in fig. 1, fig. 2 and fig. 5, when the mechanism is used, after cooling oil enters the pore channel 3, the cooling oil passes through the pore plate 1 and extrudes the baffle 2, so that the extension rod 6 slides towards the inside of the extension cylinder 4, the extrusion return spring 5 deforms, the cooling oil smoothly enters the pore channel 3, the addition is completed, and under the reaction force of the return spring 5, the baffle 2 can be restored to the original state, the cooling oil is prevented from flowing backwards, and the cooling oil is wasted.

Example 2: the dismounting structure 8 comprises a thread block 801, an empty groove 802, an external thread 803 and a sleeve 804, wherein the empty groove 802 is arranged at the bottom end of the mounting rod 10, the thread block 801 is arranged at the top end of the tool handle 11, the external thread 803 is arranged on the outer walls of the mounting rod 10 and the tool handle 11, and the sleeve 804 is connected to the outer wall of the external thread 803 in a sliding manner;

the top end of the screw block 801 extends to the inside of the empty groove 802, and the screw block 801 is connected with the empty groove 802 through screw threads;

specifically, as shown in fig. 1, 2, 3 and 4, when the mechanism is used, the sleeve 804 is rotated, the sleeve 804 can be moved toward the mounting rod 10 under the cooperation of the external threads 803 until the sleeve 804 is separated from the limit of the tool holder 11, the tool holder 11 can be completely removed for replacement and maintenance under the cooperation of the thread block 801 and the empty groove 802 by rotating the tool holder 11, and conversely, the tool holder can be installed again.

Example 3: the three-blade structure 9 comprises a blade 901, blades 902 and chip flutes 903, wherein the blade 901 is arranged on the outer wall of the handle 11 below the oil filling port 12, and the bottom end of the blade 901 is provided with the three blades 902;

the bottom ends of the blade bodies 901 between the blades 902 are provided with chip flutes 903, and the number of the chip flutes 903 is three;

specifically, as shown in fig. 1, 2 and 3, when the mechanism is used, the cutting edge 902 of the blade 901 contacts a workpiece to drill the workpiece, and the chip groove 903 can quickly convey chips generated during drilling to one side to prevent the chips from interfering with machining.

The working principle is as follows: when using this device, at first, install the drill bit on the device through mounting groove 7, the during operation begins:

the first step is as follows: the cutting edge 902 of the cutter body 901 contacts the workpiece to drill the workpiece;

the second step is that: the chip groove 903 can convey chips generated in drilling to one side quickly, and the chips are prevented from interfering machining.

After that, when the drill bit is used for a long time, the drill bit is easily damaged, and maintenance is performed.

The implementation step of the second innovation point:

the first step is as follows: rotating sleeve 804, in cooperation with external threads 803, may cause sleeve 804 to move toward mounting rod 10 until sleeve 804 is free from the constraint on tool shank 11;

the second step is that: the tool handle 11 is rotated, and the tool handle 11 can be completely taken down to be replaced and maintained under the matching of the thread block 801 and the empty groove 802, and can be installed again on the contrary.

Finally, before operation, the operator introduces a sufficient quantity of cooling oil into the duct 3 through the oil injection port 12.

The third innovation point implementation step:

the first step is as follows: after entering the pore channel 3, the cooling oil passes through the pore plate 1 and extrudes the baffle plate 2, so that the extension rod 6 slides towards the inside of the extension cylinder 4, and the return spring 5 is extruded to deform;

the second step is that: during cooling oil got into pore 3 smoothly, add and finish, under reset spring 5's reaction force, can make baffle 2 reconversion, prevent the cooling oil refluence, cause the cooling oil extravagant.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. Three sword internal cooling oilhole carbide drill bits, including handle of a knife (11), its characterized in that: the device also comprises a disassembly and assembly structure (8) convenient to maintain, a three-blade structure (9) with strong applicability and a backflow preventing structure for preventing oil leakage;

the mounting rod (10) is arranged at the top end of the cutter handle (11), the mounting groove (7) is formed in the center of the top end of the mounting rod (10), and the dismounting structure (8) is arranged between the mounting rod (10) and the cutter handle (11);

an oil filling port (12) is formed in one side of the mounting rod (10), and the three-blade structure (9) is arranged on the outer wall of the cutter handle (11) below the oil filling port (12);

three baffles (2) are arranged inside the cutter handle (11) on one side of the oil filling port (12), and the backflow preventing structure is arranged inside the baffles (2).

2. The three-blade hard alloy drill bit with the internal cooling oil hole as defined in claim 1, wherein: the backflow preventing structure comprises a pore plate (1), the pore plate (1) is arranged on the inner wall of a baffle (2), a limiting barrel (4) is arranged at the top end of one side inside the baffle (2), one side inside the limiting barrel (4) is connected with a return spring (5), and one end of the return spring (5) is connected with an extension rod (6).

3. The three-blade hard alloy drill bit with the internal cooling oil hole as claimed in claim 2, characterized in that: one end of the extension rod (6) extends to a position between the limiting barrel (4) and the pore plate (1), and the baffle (2) is installed at one end of the extension rod (6).

4. The three-blade hard alloy drill bit with the internal cooling oil hole as defined in claim 1, wherein: dismouting structure (8) are including screw thread piece (801), dead slot (802), external screw thread (803) and sleeve (804), the bottom of installation pole (10) is seted up in dead slot (802), and screw thread piece (801) set up in the top of handle of a knife (11), external screw thread (803) set up in the outer wall of installation pole (10) and handle of a knife (11), and the outer wall sliding connection of external screw thread (803) has sleeve (804).

5. The three-blade hard alloy drill bit with the internal cooling oil hole as defined in claim 4, wherein: the top end of the thread block (801) extends to the inside of the empty groove (802), and the thread block (801) is connected with the empty groove (802) through threads.

6. The three-blade hard alloy drill bit with the internal cooling oil hole as defined in claim 1, wherein: the three-edge structure (9) comprises a knife body (901), a knife edge (902) and a chip groove (903), wherein the knife body (901) is arranged on the outer wall of the knife handle (11) below the oil filling port (12), and the bottom end of the knife body (901) is provided with three knife edges (902).

7. The three-blade inner-cooling oil hole hard alloy drill bit as claimed in claim 6, characterized in that: the bottom end of the knife body (901) between the cutting edges (902) is provided with three chip flutes (903), and the number of the chip flutes (903) is three.