Electric deburring tool for through hole of small-aperture part

Abstract

The invention belongs to the field of precise assembly of aero-engine accessories, and relates to an electric deburring tool for a through hole of a small-aperture part, which solves the problem that the inner cavity (inner hole) of the part is narrow and cannot be deburred, and comprises a tool bit, a soft transmission part and a motor, and the rear end of the tool bit is connected with the motor through the soft transmission part. The oil stone tool bit is applied to the field of deburring of through hole parts of small-aperture parts and complex cavity structure parts, the oil stone tool bit can be used for deburring and polishing, the edge is smoothly transferred after deburring, and the deburring effect is excellent; the oil stone tool bit is long in service life and suitable for batch processing; the soft transmission part is good in flexibility, can be freely and properly bent in the machining process, and can be suitable for different application scenes; the motor is controlled by a pedal switch, so that equipment and parts can be conveniently controlled by two hands.

Description

Technical Field

[0001] The invention belongs to the field of precision assembly of aviation engine accessories and relates to an electric deburring tool for intersecting holes of small-diameter parts. Background Art

[0002] There are two main ways to deburr such parts: one is to manually deburr the intersecting parts by inserting a scraper or sandpaper roll from the large hole. On the one hand, due to spatial limitations, the chamfer sizes are uneven, and the sharp edge transition is not smooth; on the other hand, the tool penetrating into the large hole is prone to scratches on the inner hole of the part, which can easily cause the part to be scrapped for finishing the inner hole of the part. The other way is to use abrasive flow deburring. On the one hand, abrasive flow deburring requires the design and manufacture of special tooling, which has poor versatility. On the other hand, abrasive flow deburring will introduce excess material, and it is difficult to control the excess material of complex cavity parts, which poses a hidden danger to product safety. Summary of the invention

[0003] The purpose of the present invention is to provide an electric deburring tool for intersecting holes of small-diameter parts, so as to solve the problem that the inner cavity (inner hole) of the parts has a small space and cannot be deburred.

[0004] The technical solution of the present invention is:

[0005] An electric deburring tool for intersecting holes of small-diameter parts, comprising:

[0006] A cutter head, a soft transmission part, and a motor, wherein the rear end of the cutter head is connected to the motor through the soft transmission part.

[0007] The cutter head includes: an oil stone 1, a radial transmission rod 2, a bevel gear 3, a blade 4, an axial transmission rod 5, a bearing 7, and a housing 9;

[0008] The rear end of the oilstone 1 passes through the blade 4 and is connected to one end of the radial transmission rod 2. The other end of the radial transmission rod 2 is connected to the front end of the axial transmission rod 5 through two vertically meshed bevel gears 3. The axial transmission rod 5 passes through the blade 4, and the rear end of the axial transmission rod 5 is connected to the soft transmission part.

[0009] The rear end of the axial transmission rod 5 is sleeved with a bearing 7 .

[0010] The cutter head is covered with a housing 9 .

[0011] The soft transmission part includes: a plastic sleeve 10, in which a soft transmission shaft 6 is arranged, the front end of the soft transmission shaft 6 is connected to the cutter head, the rear end of the soft transmission shaft 6 is connected to the front end of the connecting rod 8, the front end of the connecting rod 8 is outer-circuited with a bearing 7, and the rear end of the connecting rod 8 is connected to the motor.

[0012] The motor is a stepless speed regulating motor 11 .

[0013] The blade 4 is made of metal.

[0014] The shell 9 is made of plastic.

[0015] The advantages of the present invention are:

[0016] 1. The oilstone head can both deburr and polish. After deburring, the edge is smoothly connected, and the deburring effect is excellent;

[0017] 2. The oilstone cutter head has a long service life and is suitable for batch processing;

[0018] 3. The soft transmission part has good flexibility and can be bent appropriately during processing, which can be applied to different application scenarios;

[0019] 4. The motor is controlled by a foot switch, which is convenient for controlling the equipment and parts with both hands. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0022] The present invention discloses an electric deburring tool for intersecting holes of small-diameter parts, which is mainly used for deburring intersecting holes of parts such as fuel regulators and plunger pump product housings, valve sleeves, etc. Figure 1 As shown, including:

[0023] A cutter head, a soft transmission part, and a motor, wherein the rear end of the cutter head is connected to the motor through the soft transmission part.

[0024] The cutter head includes: an oil stone 1, a radial transmission rod 2, a bevel gear 3, a blade 4, an axial transmission rod 5, a bearing 7, and a housing 9;

[0025] The rear end of the oilstone 1 passes through the blade 4 and is connected to one end of the radial transmission rod 2. The other end of the radial transmission rod 2 is connected to the front end of the axial transmission rod 5 through two vertically meshed bevel gears 3. The axial transmission rod 5 passes through the blade 4, and the rear end of the axial transmission rod 5 is connected to the soft transmission part.

[0026] The rear end of the axial transmission rod 5 is sleeved with a bearing 7 .

[0027] The cutter head is covered with a housing 9 .

[0028] The soft transmission part includes: a plastic sleeve 10, in which a soft transmission shaft 6 is arranged, the front end of the soft transmission shaft 6 is connected to the cutter head, the rear end of the soft transmission shaft 6 is connected to the front end of the connecting rod 8, the front end of the connecting rod 8 is outer-circuited with a bearing 7, and the rear end of the connecting rod 8 is connected to the motor.

[0029] The motor is a stepless speed regulating motor 11 .

[0030] The blade 4 is made of metal.

[0031] The shell 9 is made of plastic.

[0032] Directions:

[0033] Hold the tool, insert the tool head into the large hole of the part, and make the oilstone fit with the radial hole of the part. After adjusting the motor rotation speed, control the motor switch through the foot pedal, drive the oilstone to rotate through the soft transmission shaft, and hold the power tool to control the fit between the tool and the part to perform deburring operations.

[0034] The invention is applied to deburring, chamfering and polishing of intersecting holes of small-diameter parts in aerospace, mechanical engineering and the like.

[0035] Main solutions:

[0036] 1. Difficulties in deburring and polishing intersecting holes of parts with small apertures (φ12mm and above).

[0037] 2. Difficulties in deburring and polishing intersecting holes in the inner cavity of complex structural parts.

[0038] 3. The problem of uneven deburring and chamfering of intersecting holes.

[0039] 4. The problem of scratches on the side walls of the intersecting holes at the deburring position after fine machining.

[0040] 5. The problem of low efficiency of manual deburring processing.

[0041] 6. The inner cavity (inner hole) of the part is too small to remove burrs.

Claims

1. An electric deburring tool for intersecting holes of small-diameter parts, characterized in that: include: A cutter head, a soft transmission part, and a motor, wherein the rear end of the cutter head is connected to the motor through the soft transmission part.

2. The electric deburring tool for intersecting holes of small-diameter parts as claimed in claim 1, characterized in that: The cutter head comprises: an oil stone (1), a radial transmission rod (2), a bevel gear (3), a blade (4), an axial transmission rod (5), a bearing (7), and a housing (9); The rear end of the oilstone (1) passes through the blade plate (4) and is connected to one end of the radial transmission rod (2). The other end of the radial transmission rod (2) is connected to the front end of the axial transmission rod (5) through two vertically meshed bevel gears (3). The axial transmission rod (5) passes through the blade plate (4), and the rear end of the axial transmission rod (5) is connected to the soft transmission part.

3. The electric deburring tool for intersecting holes of small-diameter parts as claimed in claim 2, characterized in that: The rear end of the axial transmission rod (5) is sleeved with a bearing (7).

4. The electric deburring tool for intersecting holes of small-diameter parts as claimed in claim 3, characterized in that: The cutter head is covered with a shell (9).

5. The electric deburring tool for intersecting holes of small-diameter parts as claimed in claim 1, characterized in that: The soft transmission part comprises: a plastic sleeve (10), a soft transmission shaft (6) is arranged inside the plastic sleeve (10), the front end of the soft transmission shaft (6) is connected to the cutter head, the rear end of the soft transmission shaft (6) is connected to the front end of a connecting rod (8), the front end of the connecting rod (8) is outer-circuited with a bearing (7), and the rear end of the connecting rod (8) is connected to a motor.

6. The electric deburring tool for intersecting holes of small-diameter parts as claimed in claim 1, characterized in that: The motor is a stepless speed regulating motor (11).

7. The electric deburring tool for intersecting holes of small-diameter parts as claimed in claim 2, characterized in that: The blade (4) is made of metal.

8. The electric deburring tool for intersecting holes of small-diameter parts as claimed in claim 2, characterized in that: The shell (9) is made of plastic.

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