Inner-cooling stepped drill with chip removal function

Abstract

The utility model discloses an internal cooling step drill with a chip removal function, which comprises a step drill body, the bottom of the step drill body is fixedly connected with a drill bit, the top of the step drill body is fixedly connected with a mounting seat, the top of the mounting seat is provided with a groove, a mounting head is inserted into the groove, and the mounting head is fixedly connected with the bottom of the step drill body. Two sets of limiting holes are symmetrically formed in the bottom of the mounting head, limiting rods are inserted into the two sets of limiting holes, and the mounting head moves towards the interior of the groove, so that the two sets of clamping blocks are clamped into the two sets of clamping grooves correspondingly, and the two sets of clamping balls are inserted into the two sets of semicircular grooves correspondingly; and at the moment, the two sets of limiting rods are located in the two sets of limiting holes correspondingly, so that the installation head is fixedly installed in the groove, the installed installation head and the installation base are stable, the step drill body, the installation base and the installation head are prevented from shaking in the high-speed rotating process, and the situation that the machining quality of a workpiece is affected is avoided.

Description

Technical Field

[0001] This utility model relates to the field of internal cooling stepped drill technology, specifically an internal cooling stepped drill with chip removal function. Background Technology

[0002] Step drills, also known as pedestal drills or pagoda drills, are mainly used for drilling thin steel plates up to 3mm thick. One drill bit can replace multiple drill bits, and can process holes of different diameters as needed. Large holes can be completed in one go without changing drill bits or drilling positioning holes. Internally cooled step drills have an internal cooling system that cools the tool and workpiece during drilling, reducing friction and heat generation, thereby extending the life of the step and improving the quality of the hole wall.

[0003] For example, an internally cooled stepped drill with chip removal function (publication number: CN220462332U) includes a stepped drill body, a drill bit, and an mounting head. The drill bit is located at the bottom of the stepped drill body, and the mounting head is connected to the top of the stepped drill body. A water inlet channel is opened in the middle of the mounting head, and an internal cooling channel is opened in the middle of the stepped drill body. A chip-collecting groove is opened on the surface of the stepped drill body, and a chip removal mechanism is provided inside the chip-collecting groove. The chip removal mechanism includes a water outlet and a water outlet channel. The water outlet is opened on the surface of the chip-collecting groove. This internally cooled stepped drill with chip removal function can quickly discharge residual chips inside the chip-collecting groove through the water outlets that are equally spaced inside the spiral chip-collecting groove by the action of water flow, so that the internally cooled stepped drill has a good chip removal function. The limiting mechanism set between the stepped drill body and the mounting head facilitates the quick replacement of the mounting head on the internally cooled stepped drill, making the application range of the internally cooled stepped drill wider.

[0004] When in use, the device fixes the mounting head by the cooperation of two sets of mating pins and two sets of mating grooves. However, this mounting method is not very stable. The stepped drill body and the mounting head will shake during high-speed rotation, which will affect the machining quality of the workpiece. Therefore, we need to propose an internally cooled stepped drill with chip removal function. Utility Model Content

[0005] The purpose of this invention is to provide an internally cooled step drill with chip removal function to prevent the step drill body, mounting base and mounting head from shaking during high-speed rotation, thereby avoiding affecting the machining quality of the workpiece and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An internally cooled stepped drill with chip removal function includes a stepped drill body. A drill bit is fixedly connected to the bottom of the stepped drill body, and a mounting base is fixedly connected to the top of the stepped drill body. A groove is formed on the top of the mounting base, and a mounting head is inserted into the groove. Two sets of limiting holes are symmetrically formed on the bottom of the mounting head, and limiting rods are inserted into the two sets of limiting holes. The bottom ends of the two sets of limiting rods are fixedly connected to the mounting base. Two sets of mounting slots are symmetrically formed on the mounting base, and both sets of mounting slots are connected to the groove. A locking component for locking the mounting head is provided inside the two sets of mounting slots. Two cavities connected to the groove are also symmetrically formed on the mounting base, and auxiliary components for improving the stability of the mounting head are provided inside the two sets of cavities.

[0008] Preferably, the engaging assembly includes two sets of first springs, which are fixedly installed inside the mounting groove. One end of each set of first springs is fixedly connected to a locking block. The mounting base has limit grooves on both sides of the mounting groove. Limit blocks are slidably installed inside each of the two sets of limit grooves. The two sets of limit blocks are fixedly connected to both sides of the locking block, respectively.

[0009] Preferably, the outer wall of the mounting head has two sets of slots symmetrically arranged, and the two sets of locking blocks are respectively locked into the two sets of slots.

[0010] Preferably, the top of the mounting base is provided with two sets of sliding grooves, which are respectively connected to two sets of mounting slots. A pull rod is slidably installed inside each of the two sets of sliding grooves, and the bottom of each of the two sets of pull rods is fixedly connected to two sets of locking blocks.

[0011] Preferably, the auxiliary component includes a telescopic rod, which is fixedly installed inside the cavity. One end of the telescopic rod is fixedly connected to a retaining ball, and a second spring is sleeved on the outer wall of the telescopic rod.

[0012] Preferably, the outer wall of the mounting head is provided with two sets of semi-circular grooves, and the two sets of retaining balls are respectively inserted into the two sets of semi-circular grooves.

[0013] Preferably, the mounting head has a water inlet groove, the mounting base has a water inlet channel located directly below the water inlet groove, and the stepped drill body has an internal cooling channel located below the water inlet channel. The outer wall of the stepped drill body has several sets of water outlet channels, and all sets of water outlet channels are connected to the internal cooling channel.

[0014] Preferably, the bottom of the mounting head is provided with a waterproof groove, the waterproof groove is connected to the water inlet groove, a waterproof cover is provided inside the waterproof groove, the bottom of the waterproof cover is fixedly connected to the mounting base, and the waterproof cover is connected to the water inlet channel.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention moves the mounting head into the groove, causing two sets of locking blocks to engage with the two sets of locking slots, and two sets of locking balls to be inserted into the two sets of semi-circular grooves. At this time, two sets of limiting rods are located inside the two sets of limiting holes, so that the mounting head is fixedly installed inside the groove. The installed mounting head and the mounting base are relatively stable, preventing the stepped drill body, mounting base and mounting head from shaking during high-speed rotation, thus avoiding affecting the processing quality of the workpiece. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0020] Figure 4 This is a schematic diagram of the structure of the present invention with the top section cut open;

[0021] Figure 5 This is a schematic diagram of the structure of the mounting head of this utility model.

[0022] In the diagram: 1. Step drill body; 2. Drill bit; 3. Mounting base; 4. Mounting head; 5. Limiting rod; 6. First spring; 7. Clamping block; 8. Limiting block; 9. Pull rod; 10. Telescopic rod; 11. Clamping ball; 12. Second spring; 13. Water inlet groove; 14. Water inlet channel; 15. Internal cooling channel; 16. Water outlet channel; 17. Waterproof cover. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5 This utility model provides a technical solution:

[0025] An internally cooled stepped drill with chip removal function includes a stepped drill body 1. A drill bit 2 is fixedly connected to the bottom of the stepped drill body 1, and a mounting base 3 is fixedly connected to the top of the stepped drill body 1. A groove is formed on the top of the mounting base 3, and a mounting head 4 is inserted into the groove. Two sets of limiting holes are symmetrically formed on the bottom of the mounting head 4. Limiting rods 5 are inserted into the two sets of limiting holes, and the bottom ends of the two sets of limiting rods 5 are fixedly connected to the mounting base 3. Two sets of mounting grooves are symmetrically formed on the mounting base 3, and the two sets of mounting grooves are connected to the groove. The interior of the two sets of mounting grooves is provided with... There is a locking component for locking the mounting head 4. The mounting base 3 is also symmetrically provided with two sets of cavities connected to the groove. The interior of each set of cavities is provided with auxiliary components to improve the stability of the mounting head 4. By moving the mounting head 4 into the groove, the mounting head 4 is fixedly installed inside the groove by the cooperation of the locking component and the auxiliary components. The installed mounting head 4 and the mounting base 3 are relatively stable, preventing the stepped drill body 1, the mounting base 3 and the mounting head 4 from shaking during high-speed rotation, thus avoiding affecting the processing quality of the workpiece.

[0026] The locking assembly includes two sets of first springs 6, which are fixedly installed inside the mounting groove. One end of each set of first springs 6 is fixedly connected to a locking block 7. The mounting base 3 has limit grooves on both sides of the mounting groove. Limit blocks 8 are slidably installed inside each of the two limit grooves. The two limit blocks 8 are fixedly connected to both sides of the locking block 7. The locking block 7 can slide inside the mounting groove. Through the cooperation of the two limit blocks 8 and the two limit grooves, the locking block 7 can be limited to prevent it from falling out of the mounting groove.

[0027] Two sets of slots are symmetrically opened on the outer wall of the mounting head 4. The two sets of locking blocks 7 are respectively locked into the two sets of slots. By the rebound force of the four sets of first springs 6, the two sets of locking blocks 7 can be moved and locked into the two sets of slots to fix the mounting head 4.

[0028] The top of the mounting base 3 is provided with two sets of sliding grooves, which are connected to two sets of mounting slots respectively. A pull rod 9 is slidably installed inside the two sets of sliding grooves, and the bottom of the two sets of pull rods 9 is fixedly connected to two sets of locking blocks 7 respectively. By pulling the pull rod 9, the pull rod 9 can drive the locking block 7 fixedly connected to it to move, so that the locking block 7 moves away from the slot and cancels the fixation of the mounting head 4.

[0029] The auxiliary components include a telescopic rod 10, which is fixedly installed inside the cavity. One end of the telescopic rod 10 is fixedly connected to a retaining ball 11, and a second spring 12 is sleeved on the outer wall of the telescopic rod 10. Two sets of semi-circular grooves are opened on the outer wall of the mounting head 4, and the two sets of retaining balls 11 are respectively inserted into the two sets of semi-circular grooves. The telescopic rod 10 can limit the retaining ball 11, so that the retaining ball 11 can move accurately in the cavity. The rebound force of the second spring 12 drives the retaining ball 11 to move, so that the retaining ball 11 is located inside the semi-circular groove, which helps to improve the stability of the mounting head 4. The retaining ball 11 is semi-circular, which makes it easy to enter or move away from the semi-circular groove.

[0030] The mounting head 4 has a water inlet groove 13, and the mounting base 3 has a water inlet channel 14 located directly below the water inlet groove 13. The stepped drill body 1 is located below the water inlet channel 14 and has an internal cooling channel 15 connected to it. Several sets of water outlet channels 16 are opened on the outer wall of the stepped drill body 1, and the several sets of water outlet channels 16 are all connected to the internal cooling channel 15. Water flows through the water inlet groove 13 inside the mounting head 4 into the interior of the water inlet channel 14, and then into the interior of the internal cooling channel 15. The water inside the internal cooling channel 15 will be discharged through the several sets of water outlet channels 16, which facilitates the cooling of the stepped drill body 1 for chip removal.

[0031] The bottom of the mounting head 4 is provided with a waterproof groove, which is connected to the water inlet groove 13. A waterproof cover 17 is provided inside the waterproof groove. The bottom of the waterproof cover 17 is fixedly connected to the mounting base 3, and the waterproof cover 17 is connected to the water inlet channel 14. It can be seen that the waterproof cover 17 can effectively waterproof the water, and a rubber gasket can be installed here to prevent water from leaking from the connection between the water inlet groove 13 and the water inlet channel 14.

[0032] Working principle: When this utility model is used, by moving the mounting head 4 into the groove, the two sets of locking blocks 7 are respectively locked into the two sets of locking slots, and the two sets of locking balls 11 are respectively inserted into the two sets of semi-circular grooves. At this time, the two sets of limiting rods 5 are respectively located inside the two sets of limiting holes, so that the mounting head 4 is fixedly installed inside the groove. The mounting head 4 and the mounting base 3 are relatively stable after installation, preventing the stepped drill body 1, the mounting base 3 and the mounting head 4 from shaking during high-speed rotation, thus avoiding affecting the processing quality of the workpiece.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An internally cooled stepped drill with chip removal function, characterized in that, include: A step drill body (1), wherein a drill bit (2) is fixedly connected to the bottom of the step drill body (1); The top of the stepped drill body (1) is fixedly connected to a mounting base (3). The top of the mounting base (3) is provided with a groove. A mounting head (4) is inserted into the groove. The bottom of the mounting head (4) is provided with two sets of limiting holes symmetrically. A limiting rod (5) is inserted into the two sets of limiting holes, and the bottom ends of the two sets of limiting rods (5) are fixedly connected to the mounting base (3). The mounting base (3) is symmetrically provided with two sets of mounting slots, both sets of mounting slots are connected to the groove, and both sets of mounting slots are provided with a locking component for locking the mounting head (4). The mounting base (3) is symmetrically provided with two sets of cavities that communicate with the groove. The interior of each set of cavities is provided with auxiliary components to improve the stability of the mounting head (4).

2. The internally cooled stepped drill with chip removal function according to claim 1, characterized in that: The engaging assembly includes two sets of first springs (6), which are fixedly installed inside the mounting groove. One end of each set of first springs (6) is fixedly connected to a locking block (7). The mounting base (3) has limit grooves on both sides of the mounting groove. Limit blocks (8) are slidably installed inside each of the two sets of limit grooves. The two sets of limit blocks (8) are fixedly connected to both sides of the locking block (7).

3. The internally cooled stepped drill with chip removal function according to claim 2, characterized in that: The outer wall of the mounting head (4) is symmetrically provided with two sets of slots, and the two sets of slots (7) are respectively engaged in the interior of the two sets of slots.

4. The internally cooled stepped drill with chip removal function according to claim 3, characterized in that: The top of the mounting base (3) is provided with two sets of sliding grooves, which are connected to two sets of mounting slots respectively. Pull rods (9) are slidably installed inside the two sets of sliding grooves, and the bottoms of the two sets of pull rods (9) are fixedly connected to two sets of locking blocks (7) respectively.

5. The internally cooled stepped drill with chip removal function according to claim 1, characterized in that: The auxiliary component includes a telescopic rod (10), which is fixedly installed inside the cavity. One end of the telescopic rod (10) is fixedly connected to a ball (11), and a second spring (12) is sleeved on the outer wall of the telescopic rod (10).

6. The internally cooled stepped drill with chip removal function according to claim 5, characterized in that: The outer wall of the mounting head (4) is provided with two sets of semi-circular grooves, and the two sets of locking balls (11) are respectively inserted into the two sets of semi-circular grooves.

7. The internally cooled stepped drill with chip removal function according to claim 1, characterized in that: The mounting head (4) is provided with a water inlet groove (13), the mounting base (3) is provided with a water inlet channel (14) directly below the water inlet groove (13), and the stepped drill body (1) is provided with an internal cooling channel (15) below the water inlet channel (14). Several sets of water outlet channels (16) are provided on the outer wall of the stepped drill body (1), and the several sets of water outlet channels (16) are all connected to the internal cooling channel (15).

8. The internally cooled stepped drill with chip removal function according to claim 7, characterized in that: The bottom of the mounting head (4) is provided with a waterproof groove, which is connected to the water inlet groove (13). A waterproof cover (17) is provided inside the waterproof groove. The bottom of the waterproof cover (17) is fixedly connected to the mounting base (3), and the waterproof cover (17) is connected to the water inlet channel (14).

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