Rapid normal depth-limiting drilling tool

Abstract

The utility model belongs to the technical field of machining, and relates to a rapid normal depth-limiting drilling tool which comprises a clamping device, a locking ring, a length adjusting device, a chip removal device, a positioning block and a threaded handle drill bit. The upper end of the clamping device is a clamping part, a guide groove section and a chip removal section are sequentially arranged downwards, and the lower end of the clamping device is an internal thread section; the chip removal device is of a sleeve structure with a gear groove in the middle, a chip removal groove is formed in one side of the gear groove, and internal threads are arranged on the other side. A positioning block is installed at the tail end of the side with the chip groove, and the chip groove is used for discharging waste chips in the hole manufacturing process. The length adjusting device is of a sleeve structure with a guide block on the inner wall, a gear groove is formed in the end and used for being meshed with the gear groove in the middle of the chip removal device, and the end face of the other end is aligned with one end of the graduated scale. The quick normal depth-limiting drilling tool has been successfully applied to normal depth-limiting drilling of the outer molded surface of a forepart of a certain model. Rapid normal depth-limiting drilling of multiple holes can be achieved, the drilling effect is good, operation is convenient, and safety and reliability are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining, and relates to a tool for rapid normal depth-limited hole making. Background Art

[0002] In the prior art, in the process of depth-limited hole making, to ensure the normal direction and the hole-making depth, the method of using a drill cup + a drill bushing is usually adopted. When in use, first, the drill bit is installed on the air drill chuck, and then the drill cup and the drill bushing are installed; the length of the drill bit extending out of the end face of the drill cup is adjusted through the drill cup and the drill bushing. Finally, a steel ruler or a vernier caliper is used to measure the length extending out of the end face of the drill cup, so as to ensure the hole-making depth and avoid damaging the internal structure of the product during hole making. When using this method for depth-limited hole making, the operator needs to continuously measure the length of the drill bit extending out of the end face of the drill cup, and the hole-making efficiency is relatively low, which is not suitable for hole making at a large number of hole positions. Moreover, when making holes, to ensure that the drill cup and the drill bushing do not fall off, the operator needs to hold the drill with one hand and support the drill cup and the drill bushing with the other hand, and the reliability is relatively poor. Summary of the Invention

[0003] The purpose of the utility model: Aiming at the problems of low hole-making efficiency and poor reliability when using a drill cup and a drill bushing to achieve normal depth-limited hole making, a tool for rapid normal depth-limited hole making is provided. The tool has a simple design, is convenient to operate, has a wide application range, high hole-making efficiency, and is safe and reliable.

[0004] To solve the above technical problems, the technical solution of the utility model is as follows:

[0005] A tool for rapid normal depth-limited hole making, comprising a clamping device 1, a locking ring 2, a length adjusting device 3, a chip removal device 4, a positioning block 5, and a threaded shank drill bit 6;

[0006] The upper end of the clamping device 1 is a clamping part for connecting with an air drill, and successively downward are a guide groove section, a chip removal section, and the lower end is an internal thread section; the internal thread section at the lower end is fixedly connected with the threaded shank drill bit 6;

[0007] The guide groove section is an external thread with a guide groove for cooperating with the locking ring 2; there is a scale in the guide groove;

[0008] The chip removal section has an external thread in the circumferential direction for connecting with the chip removal device 4;

[0009] The chip removal device 4 is a sleeve structure with a gear groove in the middle. A chip removal groove is opened on one side of the gear groove, and an internal thread is provided on the other side for connecting with the external thread of the chip removal section; a positioning block 5 is installed at the end of the side with the chip removal groove, and the chip removal groove is mainly used for discharging waste chips during the hole-making process;

[0010] The length adjusting device 3 is a sleeve structure with a guide block on the inner wall, and a gear groove is provided at the end for meshing with the gear groove type in the middle of the chip removal device 4, and the other end face is aligned with one end of the scale;

[0011] The guiding block is used to achieve circumferential fixation with the clamping device 1 and guiding for dimensional adjustment.

[0012] Rotate the locking ring 2 to axially position and lock the length adjustment device 3.

[0013] The chip removal device 4 is connected to the positioning block 5 by interference fit. After the chip removal device 4 is connected to the positioning block 5 by interference fit, the chip removal device 4 is connected to the clamping device 1, and is locked through the gear groove between the chip removal device 4 and the length adjustment device 3.

[0014] During hole making, the hole making depth is controlled by the adjusted scale, and the normal direction is ensured by the positioning block 5 and the product surface. By controlling the protrusion amount of the drill bit 6, the hole making depth is further controlled.

[0015] The clamping device 1 has an internal thread for fixedly connecting with the threaded shank drill bit 6.

[0016] The guiding groove is arranged axially. The outer diameter of the guiding groove section is larger than the outer diameter of the chip removal section.

[0017] Make positioning blocks 5 conforming to different profiles to achieve depth-limited hole making for various profiles.

[0018] Preferably, the positioning block 5 is made of polytetrafluoroethylene.

[0019] Advantages of the present utility model:

[0020] The tool for rapid normal direction depth-limited hole making of the present utility model can connect the drill sleeve and the tool for normal direction depth-limited hole making through the threaded part of the threaded shank drill bit, avoiding the tool falling off during hole making; in addition, through the scale on the tool for normal direction depth-limited hole making, the adjustment of the protrusion length of the drill bit is realized. The polytetrafluoroethylene positioning block at the front end of the tool for normal direction depth-limited hole making can be replaced according to the outer profile of the product to achieve depth-limited hole making for various profiles. Specifically, there are the following benefits:

[0021] (1) Achieve rapid depth-limited hole making for a large number of hole positions;

[0022] (2) This tool is fixedly connected to the pneumatic drill and the drill bit, which is safe and reliable and does not fall off;

[0023] (3) The device is simply designed, easy to operate, and has a wide range of applications. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions implemented by the present utility model, the following will briefly explain the drawings required to be used in the examples of the present utility model. Obviously, the following described drawings are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative efforts.

[0025] Figure 1 is a combined schematic diagram of the present utility model;

[0026] Figure 2 is a schematic diagram of the clamping device in the present utility model;

[0027] Figure 3 is a schematic diagram of the length adjustment device in the present utility model;

[0028] Figure 4 is a combined schematic diagram of the chip removal device and the positioning block in the present utility model;

[0029] In the figure, 1 is the clamping device, 2 is the locking ring, 3 is the length adjustment device, 4 is the chip removal device, 5 is the positioning block, and 6 is the threaded shank drill bit. Specific embodiments

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] The features of each aspect of the embodiments of the present utility model will be described in detail below. In the following detailed description, many specific details are set forth in order to provide a thorough understanding of the present utility model. However, it is obvious to those of ordinary skill in the art that the present utility model can also be implemented without these specific details. The following description of the embodiments is only for a better understanding of the present utility model by showing examples of the present utility model. The present utility model is not limited to any specific settings and methods provided below, but covers any improvements, substitutions, etc. of all product structures and methods without departing from the spirit of the present utility model.

[0032] In each of the accompanying drawings and the following description, well-known structures and technologies are not shown to avoid unnecessarily obscuring the present utility model.

[0033] The schematic structural diagram of the tool for rapid normal depth-limited hole making of the present utility model refers to Figure 1 , and the structure of a tool for realizing rapid normal depth-limited hole making is composed of a clamping device 1, a locking ring 2, a length adjustment device 3, a chip removal device 4, a positioning block 5, and a customized threaded shank drill bit 6 combined.

[0034] The structure of the clamping device 1 is as shown in Figure 2As shown, it mainly includes a clamping part for the air drill, an internal thread part connected to the customized threaded shank 6 drill bit, a guide groove (where the scale is located), a threaded connection part with the locking ring 2, and a threaded connection part with the chip removal device 4.

[0035] The structure of the length adjustment device is as Figure 3 shown, and it mainly includes a guide block and a gear groove part. The guide block is used to achieve circumferential fixation with the clamping device 1 and the guiding of size adjustment, and the gear groove is used for connection with the chip removal device 4.

[0036] The structure of the chip removal device is as Figure 4 shown, including a chip removal groove, an internal thread connected to the clamping device, and a gear groove. The chip removal groove is mainly used for discharging waste chips during the hole-making process, the internal thread is used for connection with the clamping device 1, and the gear groove is used for fixation with the depth adjustment device 3.

[0037] When this rapid normal depth-limiting hole-making tool works, first, the customized threaded shank drill bit 6 is connected and fixed to the clamping device 1 through threads. After the threaded shank drill bit 6 is connected to the clamping device 1, the length adjustment device 3 and the chip removal device 4 are installed on the clamping device 1. Among them, the chip removal device 4 is connected to the clamping device through threads and meshes with the length adjustment device through a gear groove. After the length adjustment device 3 is inserted into the clamping device 1, circumferential positioning is carried out through the guide block of the length adjustment device 3 and the guide groove (where the scale is located) of the clamping device 1. The zero scale position of the scale is located in the middle of the scale. When the end face of the length adjustment device 3 is aligned with the zero scale of the scale, the customized threaded shank drill bit 6 extends 5 mm from the end face of the polytetrafluoroethylene positioning block, that is, the hole-making depth is 5 mm. When it is necessary to adjust the depth of the threaded shank drill bit, the length adjustment device 3 is slid in the guide groove (where the scale is located) through the guide block in the direction of the air drill or the polytetrafluoroethylene positioning hole 5. According to the corresponding scale on the scale, sliding 1 scale in the direction of the air drill increases the drill bit extension by 1 mm, and sliding 1 scale in the direction of the polytetrafluoroethylene positioning hole 5 reduces the drill bit extension by 1 mm. By controlling the extension of the drill bit 6, the hole-making depth is further controlled. After adjusting the drill bit extension, tighten the locking ring 2 to fix the length adjustment device 3 on the clamping device 1. The normal direction is ensured by the polytetrafluoroethylene positioning block 5 and the product surface. Polytetrafluoroethylene positioning blocks 5 conforming to different profiles can be made to achieve depth-limiting hole-making for various profiles. The debris generated during the hole-making process is discharged through the chip removal device 4 port.

[0038] After installation, connect the clamping device 1 to the air drill for depth-limiting hole-making. When replacing the drill bit, only need to remove the threaded shank drill bit from this tool, and then replace other specifications of threaded shank drill bits without removing this tool from the air drill.

[0039] The basic motion relationship that can be achieved by the rapid normal depth-limiting hole-making tool of the present utility model is:

[0040] (1) The length adjustment device 3 moves axially along the clamping device 1;

[0041] (2) The locking ring 2 moves circumferentially along the clamping device 1;

[0042] (3) The movement during the hole-making process of the threaded shank drill bit 6;

[0043] This rapid normal depth-limiting hole-making tool has been successfully applied to the normal depth-limiting hole-making of the outer profile surface of the front flap of a certain model. It can achieve rapid normal depth-limiting hole-making at multiple hole positions, and has good hole-making effect, convenient operation, and is safe and reliable.

[0044] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should all be covered within the protection scope of the present invention.

Claims

1. A tool for rapid normal depth-limited hole making, characterized in that: The tool comprises a clamping device (1), a locking ring (2), a length adjustment device (3), a chip removal device (4), a positioning block (5), and a threaded shank drill bit (6); The upper end of the clamping device (1) is a clamping portion used to connect with the air drill, and the lower end is a guide groove section and a chip removal section in sequence, and the lower end is an internal thread section; the internal thread section at the lower end is fixedly connected to the threaded shank drill bit (6); The guide groove section is an external thread with a guide groove, which is used to cooperate with the locking ring (2); a scale is provided in the guide groove; The chip removal segment has external threads in the circumferential direction and is used to be connected to a chip removal device (4); The chip removal device (4) is a sleeve structure with a gear groove in the middle, a chip removal groove is provided on one side of the gear groove, and an internal thread is provided on the other side for connection with the external thread of the chip removal section; a positioning block (5) is installed at the end of the side with the chip removal groove, and the chip removal groove is used for removing waste chips during the hole making process; The length adjustment device (3) is a sleeve structure with a guide block on the inner wall, with a gear groove at the end for meshing with the gear groove in the middle of the chip removal device (4), and the other end face is aligned with one end of the scale; The guide block is used to achieve circumferential fixation with the clamping device (1) and guidance for size adjustment.

2. The tool according to claim 1, characterized in that: The locking ring (2) is rotated to axially position and lock the length adjustment device (3).

3. The tool according to claim 1, characterized in that: The chip removal device (4) is connected to the positioning block (5) by interference fit.

4. The tool according to claim 1, characterized in that: The hole depth is controlled by an adjusted scale, and the normal direction is ensured by the positioning block (5) and the product surface.

5. The tool according to claim 1, characterized in that: The hole making depth is controlled by controlling the extension amount of the threaded shank drill bit (6).

6. The tool according to claim 1, characterized in that: The clamping device (1) has an internal thread which is fixedly connected to a threaded shank drill bit (6).

7. The tool according to claim 1, characterized in that: The guide groove is arranged along the axial direction.

8. The tool according to claim 1, characterized in that: The outer diameter of the guide groove section is greater than the outer diameter of the chip removal section.

9. The tool according to claim 1, characterized in that: Positioning blocks (5) conforming to different profiles are manufactured to achieve depth-limited hole making on the profiles.

10. The tool according to claim 1, characterized in that: The positioning block (5) is made of polytetrafluoroethylene.

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