JPS6257863A - Device for hydromechanically grinding inner surface of raw part - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for hydromechanically polishing the inner surface of raw parts, which is useful in metallurgy, mechanical construction, and other fields.

[Prior Art] As an apparatus for hydromechanically polishing the inner surface of an unprocessed part, a device equipped with two gripping mechanisms arranged on the inner surface of the part to be processed is conventionally known.

Such devices are equipped with a drive mechanism to which the polishing tool is attached via a long shaft. The polishing tool is secured by a groove and a lubricating and cooling liquid (LCL) supply is connected to the long shaft.

This polishing tool consists of two springs attached to the above-mentioned shaft and a bulging portion. Two polishing honing sticks are attached to this bulge.

With such conventional equipment, the diameter and length of the hole of the part that can be polished is limited, making it difficult to improve the accuracy of the surface roughness, and the supply pressure of lubricating and cooling fluid is low, so the above-mentioned The problem was that the product was only supplied to the parts of the polishing tool, resulting in low productivity. Further, such conventional polishing tools were designed to correspond to the device and were dedicated to the configuration of the device. As a result, the polishing horn stick wears unevenly along its length, and requires automatic maintenance to maintain a predetermined size by resharpening. For this reason, the polishing horn stick is subject to a large amount of wear, and the work of removing the worn polishing horn stick and replacing it with a new horn stick is troublesome, resulting in a problem of wasted time.

[Problems to be Solved by the Invention] The present invention has been made based on the above circumstances, and it is possible to polish even a long hole with a small diameter at one time, to reduce surface roughness, and to improve workability. An object of the present invention is to provide a hydromechanical polishing device that can be improved.

Means for Solving Problem E and Their Effect] The object of the invention is achieved by a device comprising two gripping mechanisms in which the parts to be processed are arranged. The device is supplied with liquid to the polishing tool by a connected lubricating and cooling liquid supply. According to the invention, each gripper structure is provided with an end piece, which end piece constitutes the tip of the feed drive. This end piece is connected to a cooling fluid supply device by a passageway equipped with a throttling mechanism. A floating polishing tool is then placed at the end of the part to be machined. Each gripping mechanism described above is also provided with a non-contact detector, which is connected to the valve of the lubrication and coolant supply system.

Further, the above-mentioned polishing tool is made of a porous elastic member, and a spiral groove is formed in the cylindrical surface thereof. Abrasive particles are contained within this porous elastic member. This porous elastic member is provided with a spherical end member, and a sleeve is movably provided on the end member.

Further, in a second embodiment of the polishing tool of the present invention, another elastic member is provided inside the above-mentioned porous elastic member, and a hole is formed inside this elastic member.

This chamber communicates with the porous elastic member through radial holes.

Furthermore, in a third embodiment of the polishing tool of the present invention, the above-mentioned chamber communicates with the internal space of the part to be machined via an axial opening.

Such an apparatus of the present invention can process a workpiece having a long hole with a small diameter.

Furthermore, the accuracy of the roughness of the machined surface is improved. Furthermore, during polishing, oil is supplied to ensure lubrication, heat is removed effectively, and work efficiency is improved.

In addition, the polishing tool has a technically superior construction and is inexpensive. Another feature is that the polishing tool and the lubrication and cooling fluid supply device are not mechanically coupled.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

The hydromechanical polishing apparatus shown in FIG. are respectively axial openings 3a.

3b is formed, and each of these openings has an aperture mechanism 48.
．． 4b is formed. In addition, the end member 2a of "1",
Gripping mechanisms 5a and 5b are movably attached to each of the end members 2b, and these gripping mechanisms grip both ends of the part 6 to be processed and hold this part in a compressed state between the end members 2a and 2b. A polishing tool 7 is housed inside the component 6 to be machined.

In order to stop and reverse the abrasive tool 7, a non-contact detector 8 is provided, which is connected to the above-described feed devices 1a, lb and valve 9a.

9b.

] As shown in FIG. 2, the polishing worker of the 1st generation was equipped with a porous elastic member 11, and a spiral groove 12 was formed in the circumferential surface of the member. Abrasive particles 1 are contained in this porous elastic member 11.
1a, and spherical end portions 13 are formed at both ends of this porous elastic member, and a sleeve 14 having a spherical receiver portion is freely attached to these spherical end portions.

Further, FIG. 3 shows another embodiment of the polishing tool, and the tool of this embodiment is provided with a porous elastic member 11, and a spiral groove 12 is formed in the porous elastic member. . This porous elastic member is provided on another elastic member 15, and a chamber 16 is formed in this elastic member, and radial holes 17 are formed around this chamber, and these holes are formed. The chamber 16 and the porous elastic member 11 are communicated via the chamber 16 . Further, spherical end portions 13 are formed at the ends of the elastic member 15, and sleeves 114 each having a spherical receiving portion are freely movably attached to these spherical end portions.

FIG. 4 shows another embodiment of this polisher, in which axial holes 18 and 19 are formed in the sleeve and elastic member 15, respectively.

The hydromechanical polishing apparatus constructed as described above operates as follows.

First, the polishing tool 7 is inserted into one end of the part 6 to be machined, and the part 6 is placed between the end members 2a and 2b, and fixed by the gripping mechanisms 5a and 5b.

Then, lubricating and cooling fluid is supplied at high pressure from the supply drive device through the aperture mechanism 4a and the opening 3a, and this pressure moves the polishing tool 7 through the hole of the component 6 to be machined.

When the polishing tool 7 moves to the other end, the non-contact detector 8 detects this and switches the operation to operate the other supply drive device 1b, and at the same time, the one supply drive device '111a is activated. is stopped, valve 9a is closed, and valve 9b is opened. When the polishing tool 7 moves within the part 6 to be machined by the pressure of this lubrication and cooling fluid, the polishing tool is compressed in the axial direction, and the hydraulic fluid sealed in the internal chamber 16 is released. ) increases, and the pressure of this working fluid acts on the porous elastic member 11 containing the abrasive particles 11a through the holes 17 described above. Therefore, during the polishing process of the technically polished surface, lubrication is ensured, the radial pressing force is maintained constant, and the surface is automatically finished to a predetermined size.

Furthermore, in the embodiment shown in FIG. 4, external lubricating and cooling fluid acts internally through the axial holes 18, 19, so that a pressing force is obtained even if this polishing tool 7 is not deformed in the axial direction. be able to.

Further, the spiral groove formed on the circumferential surface of the porous elastic member 11 of the polishing tool 7 causes the polishing worker to rotate the part 6 to be machined when moving in the axial direction.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of the apparatus of the present invention, FIG. 2 is a vertical cross-sectional view of the polishing tool of the first embodiment, FIG. 3 is a vertical cross-sectional view of the polishing tool of the second embodiment, and FIG. FIG. 3 is a longitudinal cross-sectional view of a polishing tool according to a third embodiment.

Claims (1)

[Scope of Claims] 1. A device comprising two gripping mechanisms for holding a part to be machined containing a polishing tool therein and connecting it to a lubrication and cooling fluid supply device, wherein each of the gripping mechanisms ( 5a and 5b) are provided with end members (2a and 2b);
These end pieces are configured as the front end of the feed drive (1a and 1b) and contain passages (3a and 3b) with throttle mechanisms (4a and 4b) and valves (9a and 9b).
) is connected to a lubrication and cooling fluid supply device, a polishing tool (7) is accommodated at the end of the part to be machined (6), and a non-contact detector is mounted in the gripping mechanism (5a and 5b). (8a and 8b) are provided, and these detectors are connected via valves (9a and 9b) to the abovementioned lubrication and cooling fluid supply device. Equipment for polishing. 2. The polishing tool (7) is equipped with a porous elastic member (11), the outer cylindrical surface of which is formed with a spiral groove (12), and the porous elastic member contains abrasive particles ( 11a
), the porous elastic member has a spherical end formed at the end thereof, and a sleeve is freely attached to the raw material according to claim 1. A device that hydromechanically polishes the inner surface of parts. 3. There is an elastic member (1) inside the porous elastic member (11).
5) is inserted, and a chamber (16) is formed in this elastic member, and this chamber is connected to the porous elastic member (11) by a radial hole (17) opened in the circumferential surface. Claim 1 or 2 is characterized in that:
A device for hydromechanically polishing the inner surface of the unprocessed parts described in Section 1. 4. The chamber (16) of the polishing tool (7) has an axial hole (1
8 and 19), the inner surface of the unprocessed part according to any one of claims 1 to 3, characterized in that the inner surface of the unprocessed part (6) is in communication with the inside of the part to be processed (6) through A device for hydro-mechanically polishing.