Pneumatic honing head

Abstract

The utility model belongs to the technical field of inner hole machining, and discloses a pneumatic honing head. The pneumatic honing head is composed of a body, a piston, a gland and an oilstone box. The oilstone box is connected with two pistons in a group, the two pistons are distributed on two sides of the body, inner holes of two cylinders on two sides of the body are communicated, a hose and an air pressure adjusting valve are connected through the same connector, and pressure of the pistons on the two sides is consistent all the time. The honing difficulty of the taper hole is that the honing pressure is inconsistent due to the change of the diameter of the inner hole, the constant air pressure of the pneumatic honing head ensures that the output pressure of each piston is kept unchanged, so that the honing pressure is consistent, the honing removal amount of the inner wall of the taper hole is basically consistent, and the original taper is not changed. In the honing of inner holes with different tapers, only the appearance angle of the honing head body needs to be changed, the whole structure does not need to be changed, and the honing head adapts to honing of various tapers through the simplest change. The granularity of oilstone strips required by parts made of different materials and the air pressure value during honing are determined through trial grinding, so that efficient honing is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of inner hole processing, in particular to a pneumatic honing head. Background Art

[0002] An alloy steel cylinder part manufactured in the factory has a certain taper inner hole, a diameter dimension accuracy of 0.07mm, and a roughness of Ra1.6. The existing equipment and honing methods are inefficient and difficult, which seriously restricts production. It is necessary to design a simple, stable and efficient special tool based on the existing equipment. Utility Model Content

[0003] The inner tapered hole of a cylindrical part of a product has a length of 2300mm, a taper of 2:150, a diameter tolerance of 0.07mm, and a roughness of Ra1.6. Traditional honing tools are difficult to achieve uniform honing due to the variation in the inner hole diameter. A special honing tool needs to be designed to ensure uniform honing of the entire length of the inner tapered hole and ensure dimensional accuracy. Specifically, it can be used to hone long inner tapered holes, and it can also be used to hone round straight holes.

[0004] To achieve the above purpose, the utility model proposes the following technical solutions: a pneumatic honing head includes a honing head and an air pressure regulating valve; the honing head includes a body 1, a gland 2, a piston 3, an oilstone box 4, and a joint 5;

[0005] Different groups of cylinders are arranged in the body 1, and are located on both sides of the body 1;

[0006] The inner holes of the cylinders of different groups are connected and connected to the air pressure regulating valve by the same connector 5, so that the pressure of the pistons 3 on both sides is always consistent;

[0007] A piston 3 is installed in the end of the cylinder; the piston 3 is distributed on both sides of the body 1;

[0008] Each group of pistons 3 is connected to an oilstone box 4, and the oilstone box 4 is driven to expand and contract through the piston 3;

[0009] An oilstone strip 6 is installed in the oilstone box 4; the oilstone strip 6 is pressed tightly against the inner wall of the workpiece.

[0010] The gland 2 is mounted on the piston 3 to limit the piston 3 to be located in the cylinder and prevent the piston 3 from falling off.

[0011] The piston 3 is connected to the oilstone box 4 via a spring pin.

[0012] The cylinders are arranged in two groups, which are respectively located on both sides of the body 1 .

[0013] The oilstone strip 6 is replaced with different particle sizes according to the actual situation during honing, and the air pressure is adjusted to achieve high-quality honing of the inner tapered hole.

[0014] The beneficial effects of the utility model are as follows: the pneumatic honing head for inner tapered holes solves the problems of low honing efficiency and unstable quality in long inner tapered holes, and the efficiency is significantly improved. Moreover, the honing head uses a unified air source within the factory, and does not require additional auxiliary equipment. It can be used on a variety of machine tools, and is an economical and efficient honing solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of an inner tapered hole.

[0016] Figure 2 It is a three-dimensional diagram of a cylinder with an inner tapered hole.

[0017] Figure 3 It is a pneumatic honing head.

[0018] Figure 4 It is an air pressure regulating valve.

[0019] In the figure: 1-body; 2-pressure cover; 3-piston; 4-oilstone box; 5-connector; 6-oilstone strip. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work, such as changes in the form of the body, device connection, etc., apply the principle ideas of the solution of the utility model and belong to the scope of protection of the utility model.

[0021] Design a special tool - pneumatic honing head. This tool consists of two parts: pneumatic honing head and pressure regulating valve. The pneumatic honing head consists of a body 1, a piston 3, a gland 2, and an oilstone box 4. The oilstone box 4 connects a group of two pistons 3, and the two groups of pistons 3 are distributed on both sides of the body 1. The inner holes of the two groups of cylinders on both sides of the body 1 are connected, and the hose and the air pressure regulating valve are connected by the same joint to ensure that the pressure of the pistons 3 on both sides is always consistent. When honing, replace the oilstone strips 6 of different granularity according to the actual situation, adjust the air pressure, and achieve high-quality honing of the inner tapered hole.

[0022] Taking this example, the taper of the corresponding honing head body and the size and form of the cylinder are designed according to the actual size and taper of the inner hole of the part, so that the oilstone strip 6 can be consistent with the taper of the inner hole and fit the inner surface tightly during honing. The joint form of the honing head body is designed according to the connection part of the equipment, so that the honing head body can be stably fixed on the equipment. Before use, check whether the piston 3 can move freely, and inflate to check whether there is leakage. After checking that there is no problem, the piston 3 is pressed to the minimum size, and the pneumatic honing head is placed at the entrance of the part. The oilstone strip 6 enters the part about 2 / 3, the equipment is started, the part is rotated, the air pressure regulating valve is opened, and the gas pressure is slowly adjusted to make the piston 3 slowly extend, driving the oilstone strip 6 to approach the inner wall of the part until the oilstone strip contacts the inner wall of the part, and the gas pressure is continued to increase until the oilstone strip 6 fits tightly with the inner wall of the part and has a certain pressure, stop adjusting the air pressure regulating valve, and record the pressure value of the air pressure regulating valve. Start the equipment and make the pneumatic honing head reciprocate in the inner hole of the part to achieve the honing purpose. During the honing process, observe the surface roughness of the inner hole and the process stability, and adjust the gas pressure to achieve the best effect.

[0023] This inner hole pneumatic honing can be applied to the honing of through holes whose inner holes are tapered holes or straight holes, and is not limited to the tapered holes in the embodiments of the present utility model.

[0024] The honing can be performed on a variety of holes with different tapers, and is not limited to the inner hole taper in the present embodiment.

Claims

1. A pneumatic honing head, characterized in that: The pneumatic honing head comprises a honing head and an air pressure regulating valve; the honing head comprises a body (1), a gland (2), a piston (3), an oilstone box (4), and a joint (5); Different groups of cylinders are arranged in the body (1), respectively located on both sides of the body (1); The inner holes of the cylinders of different groups are connected and connected to the air pressure regulating valve by the same connector (5), so that the pressure of the pistons (3) on both sides is always consistent; A piston (3) is installed in the end of the cylinder; the piston (3) is distributed on both sides of the body (1); Each group of pistons (3) is connected to an oilstone box (4), and the oilstone box (4) is driven to expand and contract through the pistons (3); An oilstone strip (6) is installed in the oilstone box (4); the oilstone strip (6) is pressed tightly against the inner wall of the workpiece.

2. The pneumatic honing head according to claim 1, characterized in that: The gland (2) is mounted on the piston (3) and is used to limit the piston (3) to be located in the cylinder and prevent the piston (3) from falling off.

3. The pneumatic honing head according to claim 1 or 2, characterized in that: The piston (3) is connected to the oilstone box (4) via a spring pin.

4. The pneumatic honing head according to claim 1 or 2, characterized in that: The cylinders are arranged in two groups, respectively located on both sides of the body (1).

5. The pneumatic honing head according to claim 3, characterized in that: The cylinders are arranged in two groups, respectively located on both sides of the body (1).

6. The pneumatic honing head according to claim 1, 2 or 5, characterized in that: The oilstone strip (6) is replaced with different particle sizes according to the actual situation during honing, and the air pressure is adjusted to achieve high-quality honing of the inner tapered hole.

7. The pneumatic honing head according to claim 3, characterized in that: The oilstone strip (6) is replaced with different particle sizes according to the actual situation during honing, and the air pressure is adjusted to achieve high-quality honing of the inner tapered hole.

8. The pneumatic honing head according to claim 4, characterized in that: The oilstone strip (6) is replaced with different particle sizes according to the actual situation during honing, and the air pressure is adjusted to achieve high-quality honing of the inner tapered hole.

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