Inner hole drilling mechanism

By designing an inner hole drilling mechanism, using the extension arm and gear set to drive the drill bit for inner hole processing, the problems of low efficiency, high cost and poor quality in the prior art are solved, and high efficiency and low loss are achieved inner hole processing effect.

CN222429356UActive Publication Date: 2025-02-07FUJIAN YUMEI MASCH TECH CO LTD
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Patent Information

Application Number
CN202420319723.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-02-21
Publication Date
2025-02-07
Estimated Expiration
2034-02-21

AI Technical Summary

Technical Problem

During the mechanical processing, especially when processing the inner side of the cavity, due to the small internal space of the parts, the existing electric spark processing methods are low in efficiency, serious electrode losses, high cost, and insufficient flushing affects the processing quality.

Method used

Design an inner bore drilling mechanism, including a first housing, a second housing, a gear set and a drill bit, and by providing a first extension arm and a second extension arm, combining the gear set, the drill bit can be rotated and penetrated into the inner bore. drilling.

Benefits of technology

It improves the efficiency and quality of inner hole processing, reduces electrode losses during drilling, reduces processing costs, and solves the problem of insufficient flushing.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222429356U_ABST
Patent Text Reader

Abstract

The utility model discloses an inner hole drilling mechanism which comprises a first shell, a second shell, a gear set and a drill bit. A driving cavity is formed in the middle of the first shell, a first extension arm is arranged on the first shell, and a plurality of positioning shafts are arranged on the first shell and the first extension arm; the second shell is arranged on the first shell, a second extension arm is arranged on the second shell, a plurality of positioning grooves are formed in the second shell and the second extension arm, and a positioning shaft is inserted into each positioning groove; the gear set comprises a head gear, a middle gear and a tail gear, the head gear is arranged on a positioning shaft, the side portion of the head gear is located in the driving cavity, the middle gear is arranged on the positioning shaft and meshed with the head gear, and the tail gear is arranged on the positioning shaft and meshed with the middle gear; the drill bit is rotationally arranged at the end of the first extension arm and provided with driving teeth meshed with the tail gear. According to the utility model, the second extension arm and the first extension arm can be conveniently inserted into an inner hole for drilling through a drill bit.
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Description

Technical Field

[0001] The utility model relates to the technical field of drilling processing, in particular to an inner hole drilling mechanism. Background Art

[0002] In the process of mechanical processing, we often encounter the processing of side holes and surfaces of parts, especially the inner side processing of the cavity. Due to the small internal space of the parts, there are certain difficulties in processing.

[0003] At present, the common processing method is electric spark machining, which uses special electrodes to extend into the interior of the part cavity for discharge machining. This processing method has low processing efficiency, serious electrode loss, and high processing cost. When electric spark machining is used for individual parts, due to the limitations of the internal structure of the parts, insufficient flushing will occur, thus affecting the processing quality. In view of this, the inventor conducted in-depth research on the above-mentioned defects in the prior art, and thus this case was created. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent. To this end, the purpose of the utility model is to provide an inner hole drilling mechanism, which is provided with a first housing, a second housing and a drill bit, wherein a first extension arm is provided on the first housing, a second extension arm is provided on the second housing, the drill bit is provided at the end of the first extension arm, and a gear set for driving the drill bit to rotate is provided between the second extension arm and the first extension arm, so as to facilitate the second extension arm and the first extension arm to penetrate into the inner hole to drill a hole through the drill bit.

[0005] In order to achieve the above-mentioned purpose, the utility model proposes an inner hole drilling mechanism, comprising a first housing, a second housing, a gear set and a drill bit;

[0006] A driving cavity is formed in the middle of the first shell, a first extension arm is arranged on the first shell, and a plurality of positioning shafts are arranged on the first shell and the first extension arm; the second shell is arranged on the first shell, a second extension arm is arranged on the second shell, and a plurality of positioning grooves are arranged on the second shell and the second extension arm, and each positioning groove is for inserting a positioning shaft; the gear set includes a first gear, a middle gear and a tail gear, the first gear is arranged on a positioning shaft, the side of the first gear is located in the driving cavity, the middle gear is arranged on the positioning shaft, the middle gear is meshed with the first gear, the tail gear is arranged on the positioning shaft, and the tail gear is meshed with the middle gear; the drill bit is rotatably arranged at the end of the first extension arm, and the drill bit is provided with driving teeth meshed with the tail gear.

[0007] Furthermore, a plurality of positioning axes are distributed in a straight line on the first shell and the first extension arm.

[0008] Furthermore, the distances between two adjacent positioning axes are equal.

[0009] Furthermore, a first mounting hole is provided on the first shell, and a second mounting hole is provided on the second shell, and the second mounting hole corresponds to the first mounting hole.

[0010] Furthermore, a first connecting hole is provided on the first extending arm, and a second connecting hole is provided on the second extending arm, and the second connecting hole corresponds to the first connecting hole.

[0011] Furthermore, a clearance groove is formed on the second shell and the second extension arm, the positioning groove is arranged at the bottom of the clearance groove, and the gear set is located in the clearance groove.

[0012] Furthermore, a through hole is provided at the end of the clearance groove for the drill head to pass through.

[0013] Furthermore, a clearance cavity is formed in the middle of the second shell, and the clearance cavity is arranged opposite to the driving cavity.

[0014] Furthermore, the number of the middle gears is five.

[0015] After adopting the above structure, the inner hole drilling mechanism of the utility model has at least the following beneficial effects:

[0016] 1. When in use, the inner hole drilling mechanism is arranged on the processing device so that the driving shaft of the processing device is located in the driving cavity. The driving shaft rotates through the driving wheel to drive the first gear to rotate. The first gear rotates through the middle gear to drive the tail gear to rotate. The tail gear rotates to drive the drill bit to rotate. The drill bit rotates to achieve drilling. When the inner hole needs to be drilled, the processing device drives the inner hole drilling mechanism to move so that the first extension arm and the second extension arm are inserted into the inner hole. The drill bit rotates to drill the inner wall of the inner hole. By setting the first extension arm and the second extension arm, the first extension arm and the second extension arm are in the shape of long strips, so that it is convenient to go deep into the inner hole. By setting the gear set, the drill bit is effectively driven to rotate to achieve drilling of the side wall of the inner hole.

[0017] Second, since the positioning axes are distributed in a straight line on the first shell and the first extension arm, the distances between two adjacent positioning axes are equal, so that the sizes of the first gear, the middle gear and the tail gear are consistent, which facilitates the installation of the first gear, the middle gear and the tail gear on different positioning axes and prevents the gears from being too large and causing the sides of the gears to protrude from the first extension arm and the second extension arm.

[0018] Third, by setting the first mounting hole and the second mounting hole, when the first shell is connected to the second shell, the gear set is set on the positioning shaft, and then the second shell is placed on the first shell, and the second shell is firmly fixed on the first shell by using screws or other fixing parts to pass through the second mounting hole and the first mounting hole.

[0019] Compared with the prior art, the utility model provides a first shell, a second shell and a drill bit. A first extension arm is provided on the first shell, a second extension arm is provided on the second shell, the drill bit is provided at the end of the first extension arm, and a gear set for driving the drill bit to rotate is provided between the second extension arm and the first extension arm, thereby facilitating the second extension arm and the first extension arm to penetrate into the inner hole for drilling by the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an inner hole drilling mechanism according to an embodiment of the utility model;

[0021] Figure 2 It is an exploded view of the inner hole drilling mechanism according to an embodiment of the utility model;

[0022] Figure 3 It is a schematic diagram of the connection between the gear set and the first housing according to an embodiment of the utility model;

[0023] Figure 4 is a schematic structural diagram of a second housing according to an embodiment of the utility model;

[0024] Figure 5 It is a schematic diagram of the connection between the inner hole drilling mechanism and the driving shaft of the processing device according to an embodiment of the utility model.

[0025] Description of symbols

[0026] The first shell 1, the drive cavity 11, the first mounting hole 12, the second shell 2, the second mounting hole 21, the make way cavity 22, the gear set 3, the first gear 31, the middle gear 32, the tail gear 33, the drill bit 4, the drive tooth 41, the first extension arm 5, the first connecting hole 51, the positioning shaft 6, the second extension arm 7, the second connecting hole 71, the make way groove 72, the through hole 73, and the positioning groove 8. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] like Figures 1 to 5As shown, an internal hole drilling mechanism of the utility model comprises a first shell 1, a second shell 2, a gear set 3 and a drill bit 4; a driving chamber 11 is formed in the middle of the first shell 1, a first extension arm 5 is arranged on the first shell 1, and a plurality of positioning shafts 6 are arranged on the first shell 1 and the first extension arm 5; the second shell 2 is arranged on the first shell 1, a second extension arm 7 is arranged on the second shell 2, and a plurality of positioning grooves 8 are arranged on the second shell 2 and the second extension arm 7, and each positioning groove 8 is provided for a positioning shaft 6 to be inserted; the gear set 3 comprises a first gear 31, a middle gear 32 and a tail gear 33, the first gear 31 is arranged on a positioning shaft 6, the side of the first gear 31 is located in the driving chamber 11, the middle gear 32 is arranged on the positioning shaft 6, the middle gear 32 is meshed with the first gear 31, the tail gear 33 is arranged on the positioning shaft 6, and the tail gear 33 is meshed with the middle gear 32; the drill bit 4 is rotatably arranged at the end of the first extension arm 5, and a driving tooth 41 meshing with the tail gear 33 is arranged on the drill bit 4.

[0029] Thus, the utility model relates to an inner hole drilling mechanism. When in use, the inner hole drilling mechanism is arranged on a processing device, so that the driving shaft of the processing device is located in the driving chamber 11, the driving shaft rotates through the driving wheel to drive the first gear 31 to rotate, the first gear 31 rotates through the middle gear 32 to drive the tail gear 33 to rotate, the tail gear 33 rotates to drive the drill bit 4 to rotate, and the drill bit 4 rotates to achieve drilling. When the inner hole needs to be drilled, the processing device drives the inner hole drilling mechanism to move, so that the first extension arm 5 and the second extension arm 7 are inserted into the inner hole, and the drill bit 4 rotates to drill the inner wall of the inner hole. By setting the first extension arm 5 and the second extension arm 7, the first extension arm 5 and the second extension arm 7 are in the shape of long strips, so that it is convenient to go deep into the inner hole, and by setting the gear set 3, the drill bit 4 is effectively driven to rotate to achieve drilling of the side wall of the inner hole.

[0030] Optionally, a plurality of positioning shafts 6 are distributed in a straight line on the first housing 1 and the first extension arm 5. The distance between two adjacent positioning shafts 6 is equal. Since the positioning shafts 6 are distributed in a straight line on the first housing 1 and the first extension arm 5, the distance between two adjacent positioning shafts 6 is equal, the sizes of the first gear 31, the middle gear 32 and the tail gear 33 can be consistent, which facilitates the installation of the first gear 31, the middle gear 32 and the tail gear 33 on different positioning shafts 6, and prevents the gears from being too large and causing the side of the gears to protrude from the first extension arm 5 and the second extension arm 7.

[0031] Furthermore, a first mounting hole 12 is provided on the first housing 1, and a second mounting hole 21 is provided on the second housing 2, and the second mounting hole 21 corresponds to the first mounting hole 12. By providing the first mounting hole 12 and the second mounting hole 21, when the first housing 1 is connected to the second housing 2, the gear set 3 is provided on the positioning shaft 6, and then the second housing 2 is placed on the first housing 1, and a fixing member such as a screw is passed through the second mounting hole 21 and the first mounting hole 12 to firmly fix the second housing 2 on the first housing 1.

[0032] Further, a first connection hole 51 is provided on the first extension arm 5, and a second connection hole 71 is provided on the second extension arm 7, and the second connection hole 71 corresponds to the first connection hole 51. By providing the first connection hole 51 and the second connection hole 71, when the first extension arm 5 is connected to the second extension arm 7, the gear set 3 is set on the positioning shaft 6, and then the second housing 2 is placed on the first housing 1, so that the second extension arm 7 is placed on the first extension arm 5, and a fixing member such as a screw is passed through the second connection hole 71 and the first connection hole 51 to firmly fix the second extension arm 7 on the first connection hole 51.

[0033] In a preferred embodiment of the utility model, a clearance groove 72 is formed on the second housing 2 and the second extension arm 7, the positioning groove 8 is provided at the bottom of the clearance groove 72, and the gear set 3 is located in the clearance groove 72. After the second housing 2 is connected to the first housing 1, the gear set 3 is located in the clearance groove 72, so that the gear set 3 is prevented from being exposed to the outside world, thereby preventing external dust from entering the gear set 3 and affecting the rotation of the gear set 3.

[0034] In this example, a through hole 73 for the head of the drill bit 4 to pass through is set at the end of the clearance groove 72. When the second shell 2 is connected to the first shell 1, the head of the drill bit 4 protrudes from the through hole 73 through the through hole 73, which makes it convenient for the head of the drill bit 4 to contact the hole wall of the inner hole of the workpiece to be processed, thereby drilling the hole wall of the inner hole.

[0035] Furthermore, a clearance cavity 22 is formed in the middle of the second housing 2, and the clearance cavity 22 is arranged opposite to the driving cavity 11. By setting the clearance cavity 22, it is convenient for the driving shaft to pass through the driving cavity 11 and pass through the clearance cavity 22, so that the driving wheel on the driving shaft is engaged with the first gear 31, and the driving wheel rotates to drive the first gear 31 to rotate, thereby realizing the rotation of the drill bit 4.

[0036] In this example, five middle gears 32 are set, and the head gear 31 and the tail gear 33 are each set to one, so that the first extension arm 5 and the second extension arm 7 have a certain length, which is convenient for processing deep into the inner hole. Of course, the middle gear 32 in this example can be set to other numbers according to different inner hole processing positions, such as three, four, six, seven or eight, etc.

[0037] Compared with the prior art, the utility model provides a first shell body 1, a second shell body 2 and a drill bit 4. A first extension arm 5 is provided on the first shell body 1, a second extension arm 7 is provided on the second shell body 2, the drill bit 4 is provided at the end of the first extension arm 5, and a gear set 3 for driving the drill bit 4 to rotate is provided between the second extension arm 7 and the first extension arm 5, thereby facilitating the second extension arm 7 and the first extension arm 5 to penetrate into the inner hole for drilling through the drill bit 4.

[0038] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. An inner hole drilling mechanism, characterized in that: It includes a first housing, a second housing, a gear set and a drill bit; A driving cavity is formed in the middle of the first shell, a first extension arm is arranged on the first shell, and a plurality of positioning shafts are arranged on the first shell and the first extension arm; the second shell is arranged on the first shell, a second extension arm is arranged on the second shell, and a plurality of positioning grooves are arranged on the second shell and the second extension arm, and each positioning groove is for inserting a positioning shaft; the gear set includes a first gear, a middle gear and a tail gear, the first gear is arranged on a positioning shaft, the side of the first gear is located in the driving cavity, the middle gear is arranged on the positioning shaft, the middle gear is meshed with the first gear, the tail gear is arranged on the positioning shaft, and the tail gear is meshed with the middle gear; the drill bit is rotatably arranged at the end of the first extension arm, and the drill bit is provided with driving teeth meshed with the tail gear.

2. The inner hole drilling mechanism according to claim 1, characterized in that: A plurality of positioning axes are distributed in a straight line on the first shell and the first extension arm.

3. The inner hole drilling mechanism according to claim 2, characterized in that: The distances between two adjacent positioning axes are equal.

4. The inner hole drilling mechanism according to claim 1, characterized in that: The first shell is provided with a first mounting hole, and the second shell is provided with a second mounting hole, and the second mounting hole corresponds to the first mounting hole.

5. The inner hole drilling mechanism according to claim 4, characterized in that: The first extension arm is provided with a first connection hole, and the second extension arm is provided with a second connection hole, and the second connection hole corresponds to the first connection hole.

6. The inner hole drilling mechanism according to claim 1, characterized in that: A clearance groove is formed on the second shell body and the second extension arm, the positioning groove is arranged at the groove bottom of the clearance groove, and the gear set is located in the clearance groove.

7. The inner hole drilling mechanism according to claim 6, characterized in that: The end of the clearance groove is provided with a through hole for the drill head to pass through.

8. The inner hole drilling mechanism according to claim 1, characterized in that: A clearance cavity is formed in the middle of the second shell, and the clearance cavity is arranged opposite to the driving cavity.

9. The inner hole drilling mechanism according to claim 1, characterized in that: The number of the middle gears is five.