CN223070484U - Split type module drill - Google Patents
Split type module drill Download PDFInfo
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- CN223070484U CN223070484U CN202422008482.7U CN202422008482U CN223070484U CN 223070484 U CN223070484 U CN 223070484U CN 202422008482 U CN202422008482 U CN 202422008482U CN 223070484 U CN223070484 U CN 223070484U
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Abstract
The utility model provides a split type module drill, which relates to the technical field of drill bits and comprises a head module, a cutter bar module, indexable blades and S drill blades, wherein the head module is provided with a chip pocket, a central drill positioning and mounting structure and indexable blade slots, the indexable blade slots are provided with a plurality of indexable blades for mounting at least two groups of symmetrically arranged indexable blades, the central drill positioning and mounting structure is used for being matched with the S drill blades to realize positioning and mounting of the S drill blades, the chip pocket comprises a forming slot and a chip removal slot, the cutter bar module is provided with a butt joint structure, and the butt joint structure is used for realizing positioning and butt joint of the head module and the cutter bar module. The hole machining efficiency of the diameter depth of more than 5 times of 26 mm can be greatly improved, the service life is prolonged, the scrap discharging effect can be improved by controlling the shape of scrap iron through the arrangement of the forming groove and the scrap discharging groove, the hole wall roughness is reduced, and the machining precision is guaranteed.
Description
Technical Field
The utility model relates to the technical field of drill bits, in particular to a split type module drill.
Background
At present, for processing holes with the diameter of 8 times of the depth of more than 25mm, a U-shaped drilling line with a center positioning drill is generally used for processing, and due to the limitation of materials and structures of the center positioning drill, the drill has the advantages of short service life, low drilling efficiency, unsmooth chip removal and easy chip clamping when in actual processing application, and can reduce the hole wall roughness to influence the drilling precision.
Disclosure of utility model
The utility model aims to provide a split type module drill, which has the advantages that the service life is prolonged, the drilling efficiency is improved, the scrap iron shape is controlled to improve chip removal, and the hole wall roughness and the machining precision are improved by reasonably combining an indexable blade and an S-shaped drill blade.
In order to solve the problems, the utility model provides a split type module drill, which comprises a head module, a cutter bar module, indexable blades and S drill blades, wherein the head module is provided with chip flutes, a central drill positioning and mounting structure and indexable blade grooves, the indexable blade grooves are provided with a plurality of indexable blade grooves for mounting at least two groups of indexable blades which are symmetrically arranged, the central drill positioning and mounting structure is used for being matched with the S drill blades to realize positioning and mounting of the S drill blades, the chip flutes comprise forming grooves and chip grooves, the cutter bar module is provided with a butt joint structure, and the butt joint structure is used for realizing positioning and butt joint of the head module and the cutter bar module.
According to the embodiment of the utility model, the center drill positioning and mounting structure comprises a blade center positioning hole and a positioning groove, and the positioning groove is matched with the S-shaped drill blade in shape and has a rotation stopping effect.
The bottom of the S-shaped drilling blade is provided with a cylindrical locating pin which is used for being inserted into a blade center locating hole to realize center locating, the shape of the side wall of the S-shaped drilling blade is set to be V-shaped, and a corresponding locating groove is set to be a concave V-shaped locating groove.
Preferably, the indexable insert is provided with 2-4 sets.
According to an embodiment of the utility model, the docking structure comprises a positioning hole arranged on the cutter bar module, a positioning column is arranged on the head module, and the positioning column is inserted into the positioning hole to realize positioning assembly of the head module and the cutter bar module.
According to one embodiment of the utility model, the head module is connected with the cutter bar module through a locking screw.
According to an embodiment of the present utility model, the positioning post is provided with a locking inclined plane, and when the locking screw is screwed into the locking inclined plane, a pull-down force is generated due to a structural effect of the inclined plane.
Preferably, the inclination angle of the locking inclined plane is 45-60 degrees.
According to an embodiment of the present utility model, the docking structure further includes a rotation stopping structure, the rotation stopping structure includes a fan-shaped boss disposed on the cutter bar module, and a fan-shaped groove is disposed on the head module.
According to the embodiment of the utility model, the locking inclined plane is provided with a locking inclined plane deflection angle, optionally, the angle of the locking inclined plane deflection angle is 1-10 degrees, and the locking inclined plane deflection angle is used for enabling the head module to be automatically attached to the side surface rotation stopping surface of the fan-shaped boss after being assembled, so that the clearance is eliminated and vibration is inhibited.
In this embodiment, the fan-shaped boss and the fan-shaped groove are both provided with two groups and are symmetrically arranged.
According to an embodiment of the utility model, the head module is provided with guide bars.
The guide strip plays a role in supporting stability, is favorable for improving drilling quality, and increases radial supporting points.
According to an embodiment of the utility model, a cooling module is arranged in the split type module drill, the cooling module comprises a central cooling channel, a central cooling hole and an outer cooling hole, the central cooling channel is arranged in the cutter bar module, the central cooling hole and the outer cooling hole are arranged on the head module, and the central cooling hole and the outer cooling hole are connected with the central cooling channel.
According to the embodiment of the utility model, the indexable insert and the S-shaped drill insert are fixed by the bolts, so that the indexable insert and the S-shaped drill insert are convenient to install and detach.
The utility model has the beneficial effects that the center positioning drill is designed in a modularized manner, as the hard alloy S-shaped drill blade has the same excellent drilling performance as the whole hard alloy, the indexable blade adopts a symmetrical two-edge combined design, the hole machining efficiency of the depth of more than 5 times of 26 mm can be greatly improved, the reasonable combination of the indexable blade and the S-shaped drill blade is beneficial to prolonging the service life, and the chip removal effect can be improved by controlling the shape of the scrap iron through the arrangement of the forming groove and the chip removal groove, the hole wall roughness is reduced, and the machining precision is ensured.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic view of the overall structure of a split modular drill;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view of the structure at A-A in FIG. 1;
FIG. 4 is a schematic cross-sectional view of a split modular drill;
FIG. 5 is an enlarged schematic view of the structure at P in FIG. 4;
FIG. 6 is a schematic view of the structure at B-B in FIG. 4;
FIG. 7 is a schematic view of the structure of the blade center locating hole and locating slot in the head module;
FIG. 8 is a schematic view of an exploded construction of a split modular drill;
FIG. 9 is a schematic view of the structure of the central cooling channel, the lateral cooling channels and the chip flutes;
FIG. 10 is a bottom schematic view of the head module;
fig. 11 is a schematic structural view of an S-drill insert and a positioning groove.
Detailed Description
The following description is presented to enable one skilled in the art to practice the utility model and is provided only to enable the utility model. The embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other arrangements without departing from the spirit and scope of the utility model.
[ Example 1 ]
A split modular drill, as in fig. 1, includes a head module 10, a shank module 20, an indexable insert 13, and an S-drill insert 14.
The head module 10 is provided with a chip flute, a blade center positioning hole 3, a positioning groove 4 and an indexable blade groove 5, the indexable blade groove 5 is provided with a plurality of indexable blades 13 for mounting at least two groups, generally, the indexable blades 13 are provided with 2-4 groups, the number of the mounted blades can be adaptively adjusted according to specific requirements, the blade center positioning hole 3 and the positioning groove 4 are used for being matched with the S-shaped drill blade 14, the positioning groove 4 is matched with the S-shaped drill blade 14 in shape, positioning mounting of the S-shaped drill blade 14 is achieved, specifically, as shown in fig. 11, the bottom of the S-shaped drill blade 14 is provided with a cylindrical positioning pin for being inserted into the blade center positioning hole 3 to achieve center positioning, the side wall of the S-shaped drill blade 14 is provided with a V-shaped, the corresponding positioning groove 4 is provided with a concave V-shaped positioning groove to achieve the effect of further positioning and stabilizing the blades, in this embodiment, the indexable blades 13 and the S-shaped drill blade 14 are convenient to detach and replace, and in this embodiment, the S-shaped drill blade 14 is fixed by the S-shaped drill blade locking screw 7, and the indexable blade 13 is fixed by the indexable blade locking screw 6.
The S-drill insert 14 is typically made of cemented carbide.
The chip flute adopts two-section design, including the shaping groove 1 of anterior segment and chip groove 2 of rear segment, chip groove 2 connects the chip groove of cutter arbor module, and the space of shaping groove 1 is little to form the constraint to the chip, makes the chip in-process form great plastic deformation, and its hardness will be improved to some extent, and plasticity and toughness then show the reduction, and this kind of phenomenon is called cold work hardening. After cooling and hardening, the chip becomes hard and brittle, and is easy to break when being subjected to alternating bending or impact load, the chip containing space of the chip removing groove 2 is large, the chip volume in the central area becomes small after chip breaking, so that the chip removing passage is good and the chip removing is smoother. As shown in fig. 9, the chip removal is improved by controlling the shapes of the chip scraps through the arrangement of the forming groove 1 and the chip removal groove 2, so that the smooth chip removal is achieved, the chip clamping effect is not easy, and the machining precision is improved.
The cutter bar module 20 is provided with a blade back 11, a blade margin 12 and a butt joint structure, the butt joint structure is used for realizing the positioning butt joint of the head module 10 and the cutter bar module 20, and the cutter bar module 20 and the head module 10 form a center positioning drill after being positioned and butted through the butt joint structure.
Specifically, the docking structure comprises a positioning hole 25 arranged on the cutter bar module 20, a positioning column 16 is arranged on the head module 10, and the positioning column 16 is inserted into the positioning hole 25 to realize positioning assembly of the head module 10 and the cutter bar module 20.
As shown in fig. 8, the positioning column 16 is a cylinder, the positioning hole 25 is formed at the end face 23 of the cutter bar module 20, the positioning column 16 is inserted into the positioning hole 25 to realize central positioning, further, the docking structure further comprises a rotation stopping structure, the rotation stopping structure comprises a fan-shaped boss 17 arranged on the cutter bar module 20, a fan-shaped groove 18 is arranged on the head module 10, the fan-shaped boss 17 and the fan-shaped groove 18 are symmetrically arranged in two groups for realizing rotation stopping effect, as shown in fig. 3, the fan-shaped boss 17 is provided with a positioning fan-shaped angle 21, the V1 angle of the positioning fan-shaped angle 21 is selected to be 30-70 degrees, the positioning fan-shaped angle 21 is used for forming suitable driving, stress and rotation stopping surfaces 22 at two sides of the fan-shaped boss 17, and optionally, in other embodiments, other shapes of bosses such as a polygon can be adopted for realizing rotation stopping effect.
In this embodiment, the head module 10 and the cutter bar module 20 may be connected by a locking screw 29, specifically, as shown in fig. 4 and 5, a locking inclined plane 19 is provided on the positioning post 16, when the locking screw 29 is screwed into the locking inclined plane 19, a downward pulling force is generated due to the structural effect of the inclined plane, so that the connection between the head module 10 and the cutter bar module 20 is more compact and reliable, preferably, the locking inclined plane 19 has a locking inclined plane deflection angle 27, the locking inclined plane deflection angle 27 is used for enabling the head module 10 to automatically attach to the driving, stress and rotation stopping surface 22 after being assembled, eliminating the gap suppression vibration, the angle of the locking inclined plane deflection angle 27 is 1-10 °, and the inclination angle of the locking inclined plane 19 is 45-60 °.
Preferably, as shown in fig. 8 and 9, two guide strips 15 are symmetrically installed on the head module 10, the guide strips 15 are fixed by guide strip locking screws 24, and the guide strips 15 play a role in supporting stability, thereby being beneficial to improving drilling quality and increasing radial supporting points.
Further, in this embodiment, a cooling module is further provided, as shown in fig. 2 and 9, including a central cooling channel 8, an outer cooling hole 9, and a lateral cooling channel 26, where the central cooling channel 8 extends from the cutter bar module 20 to the head module 10 to form a central cooling hole, and the lateral cooling channel 26 is provided in the cutter bar module 20, where the outer cooling hole 9 is connected to the central cooling channel 8 through the lateral cooling channel 26. The cooling mode is that water is fed from the cutter bar module 20, the azimuth is that the water is at the center of the rear end of the cutter bar module 20, the water is discharged from the center cooling hole and the outer side cooling hole 9 at the outer circle of the head module 10, and the number of the center cooling hole and the outer side cooling hole 9 is generally 2-4.
The drilling step of the drill bit is that the hard alloy S-shaped drilling blade 14 is responsible for centering to firstly process the 1/2 aperture size, and then the hole is reamed by the indexable blades 13 on two sides to complete the hole processing.
Because the large-diameter integral hard alloy drill bit is very expensive, the same processing efficiency can be realized by utilizing the indexable insert and S-shaped drilling insert combination, and the processing cost of a single hole is reduced. The indexable insert and the S-shaped drill insert are small in size and low in price, are made of hard alloy, so that the machining cutting parameters are unchanged, meanwhile, the indexable insert can be used for indexing, 4 cutting edges can be used for switching, and the S-shaped drill insert in the center is low in cutting speed due to small diameter, so that the abrasion is low.
Therefore, the indexable insert 13 adopts a symmetrical two-edge combined design to greatly improve the hole machining efficiency of the depth of more than 5 times of the diameter of 26 mm, and the modularized design can also reduce the use cost of the cutter because the hard alloy S-shaped drilling insert 14 has the same excellent drilling performance as the integral hard alloy.
It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The objects of the present utility model have been fully and effectively achieved. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model are susceptible to any variations and modifications without departing from the principles.
Claims (10)
1. The split type module drill is characterized by comprising a head module (10), a cutter bar module (20), indexable blades (13) and S-shaped drill blades (14), wherein chip flutes, a central drill positioning and mounting structure and indexable blade grooves (5) are arranged on the head module (10), the indexable blade grooves (5) are formed in a plurality and are used for mounting at least two groups of symmetrically arranged indexable blades (13), the central drill positioning and mounting structure is used for being matched with the S-shaped drill blades (14) to realize positioning and mounting of the S-shaped drill blades (14), the chip flutes comprise forming grooves (1) and chip grooves (2), a butt joint structure is arranged on the cutter bar module (20), and the butt joint structure is used for realizing positioning and butt joint of the head module (10) and the cutter bar module (20).
2. The split modular drill as recited in claim 1, wherein the center drill positioning and mounting structure comprises a blade center positioning hole (3) and a positioning groove (4), and the positioning groove (4) is in shape fit with the S-shaped drill blade (14).
3. The split module drill as claimed in claim 1 or 2, wherein the butt joint structure comprises a positioning hole (25) arranged on the cutter bar module (20), a positioning column (16) is arranged on the head module (10), and the positioning column (16) is inserted into the positioning hole (25) to realize positioning assembly of the head module (10) and the cutter bar module (20).
4. The split modular drill as recited in claim 3, wherein the head module (10) is coupled to the shank module (20) by a locking screw (29).
5. The split modular drill of claim 4, wherein the positioning post (16) is provided with a locking inclined surface (19), and when the locking screw (29) is screwed into the locking inclined surface (19), a downward pulling force is generated due to the structural effect of the inclined surface.
6. The split modular drill of claim 5, wherein the docking structure further comprises a rotation stop feature.
7. The split modular drill as recited in claim 6, wherein the anti-rotation structure comprises a scalloped boss (17) provided on the tool bar module (20), and the head module (10) is provided with a scalloped groove (18).
8. The split modular drill as recited in claim 7, wherein the locking ramp (19) has a locking ramp deflection angle (27).
9. A split modular drill as claimed in any one of claims 4 to 8, wherein the head module (10) has guide bars (15) mounted thereon.
10. The split module drill according to claim 9, wherein a cooling module is arranged in the split module drill, the cooling module comprises a central cooling channel (8), a central cooling hole and an outer cooling hole (9), the central cooling channel (8) is arranged in the cutter bar module (20), the central cooling hole and the outer cooling hole (9) are arranged on the head module (10), and the central cooling hole and the outer cooling hole (9) are connected with the central cooling channel (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422008482.7U CN223070484U (en) | 2024-08-19 | 2024-08-19 | Split type module drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422008482.7U CN223070484U (en) | 2024-08-19 | 2024-08-19 | Split type module drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223070484U true CN223070484U (en) | 2025-07-08 |
Family
ID=96255161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422008482.7U Active CN223070484U (en) | 2024-08-19 | 2024-08-19 | Split type module drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223070484U (en) |
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2024
- 2024-08-19 CN CN202422008482.7U patent/CN223070484U/en active Active
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