CN214349717U - Boring cutter auxiliary mechanism for large-aperture deep hole machining - Google Patents

Abstract

A boring cutter auxiliary mechanism for large-aperture deep hole machining aims at solving the problem that a cutter cannot be machined due to vibration when a large-aperture deep hole is machined; the bearing comprises a body, wherein the inside of the body is connected with a shaft sleeve through a ball bearing, four mounting planes are symmetrically arranged on the periphery of the body, a support frame is fixed on each mounting plane through a bolt, an elastic cylinder penetrates through the inside of each support frame, a spring is arranged between each elastic cylinder and the body, and an outer spherical bearing is rotatably arranged at the outer end of each elastic cylinder; the utility model discloses simple structure is ingenious, can provide sufficient support for the cutter that carries out large aperture BTA, reduces the cutter vibrations, guarantees the smooth completion of processing.

Description

Boring cutter auxiliary mechanism for large-aperture deep hole machining

Technical Field

The utility model relates to a spot facing work equipment technical field especially relates to a boring cutter complementary unit for large aperture BTA.

Background

In the mechanical processing, a large number of large-aperture deep holes are processed. According to the prior processing technology, the processing is always carried out on a large-scale horizontal boring and milling machine. However, the equipment always has limitations, some procedures cannot complete all processing on one machine tool, and several pieces of equipment are needed to be matched, so that repeated clamping and repeated positioning of parts are caused. The accumulated error of the processed parts is increased, the precision requirement and the service life of the parts are influenced, and the assembly difficulty is increased. And the design precision of the existing parts is higher and higher. Preferably, the clamping is carried out once, and the scheme for finishing all machining is the most reasonable scheme. Due to the machine tool structure, the equipment characteristics. The large-aperture deep hole machining is always a scaling problem of a gantry pentahedron machining center. If the problem can be solved, the method is a great breakthrough for processing. The precision of parts can be guaranteed, and equipment investment can be reduced.

When the processing aperture is too large, the cutter is shaken in processing, although the length of the cutter can be realized by adding the extension rod, the cutter cannot be processed after the length of the cutter exceeds 500 mm, the cutter shakes too violently, and the cutter is extremely easy to shake and break. Therefore, a mechanism specially assisting the overlong boring cutter in machining needs to be designed, so that the vibration of the cutter is reduced, and the machining of the hole is completed.

SUMMERY OF THE UTILITY MODEL

For overcoming prior art's defect, the utility model provides a boring cutter complementary unit for large aperture BTA, its aim at solves the problem that the cutter vibrations can't be processed when large aperture BTA adds man-hour.

The technical scheme for solving the technical problem is as follows: the utility model provides a boring cutter complementary unit for large aperture BTA, includes the body, and the body is inside to be connected with the axle sleeve through ball bearing, and body periphery symmetry is equipped with four mounting planes, and the last support frame that has of mounting plane through the bolt fastening, the inside elastic tube that wears to be equipped with of support frame is equipped with the spring between elastic tube and the body, and the elastic tube outer end is rotated and is equipped with the insert bearing.

Preferably, the elastic cylinder is internally provided with a strip-shaped through hole, and the support frame is fixed with a limiting rod penetrating through the through hole.

Preferably, the limiting rod is an inner hexagonal screw.

Preferably, the spherical outer bearing is fixed on the top of the elastic cylinder through a cylindrical pin.

The utility model discloses simple structure is ingenious, can provide sufficient support for the cutter that carries out large aperture BTA, reduces the cutter vibrations, guarantees the smooth completion of processing.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the assembled structure of the present invention.

Fig. 3 is an enlarged schematic view of the point a in fig. 1 according to the present invention.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

As can be known from figures 1 to 3, a boring cutter auxiliary mechanism for large aperture deep hole machining, including body 1, body 1 is inside to be connected with axle sleeve 3 through ball bearing 2, and body 1 periphery symmetry is equipped with four mounting plane 4, is fixed with support frame 5 through bolt 12 on the mounting plane 4, and elastic tube 6 is worn to be equipped with in support frame 5 is inside, is equipped with spring 7 between elastic tube 6 and the body 1, and elastic tube 6 outer end rotates and is equipped with spherical outside bearing 8.

For avoiding elastic tube 6 to deviate from in the support frame 5, seted up the through-hole 9 of rectangular shape in the elastic tube 6, be fixed with the gag lever post 10 that passes through-hole 9 on the support frame 5, gag lever post 10 adopts the hexagon socket head cap screw, unscrews gag lever post 10, can take out elastic tube 6, changes inside spring 7, and gag lever post 10 passes through-hole 9, fixes elastic tube 6 on support frame 5, avoids spring 7 to release elastic tube 6.

In order to facilitate the rolling of the spherical outer bearing 8, the spherical outer bearing 8 is fixed on the top of the elastic tube 6 through a cylindrical pin 11.

When the utility model is used in a concrete way,

a set of auxiliary mechanism is respectively installed in front of and behind the boring cutter, and the machining process is as follows: before the front auxiliary mechanism and the rear auxiliary mechanism contact parts, the auxiliary mechanisms rotate along with the boring cutter, the auxiliary mechanisms in front of the boring cutter stop rotating when being in contact with the parts, at the moment, the outer spherical bearings 8 are in contact with the parts, when the feeding is continued along the path of the boring cutter, the outer spherical bearings 8 are compressed inwards under the pressure of the hole wall, the springs 7 are stressed, enough supporting force is provided for the boring cutter during rotation, the cutter does not jump radially, at the moment, the boring cutter continues to rotate and feed, the cutting blade stably finishes cutting under the supporting action of the front auxiliary mechanism, after the rear auxiliary mechanism is in contact with the parts, the working mode is the same as that of the front auxiliary mechanism, when the front auxiliary mechanism leaves the hole, the rear auxiliary mechanism supports the boring cutter, the boring cutter can continue to stably process, and when the cutting is finished, the boring cutter stops rotating and stably retreats, and the processing is finished.

Compared with the prior art, the utility model, following beneficial effect has:

1. the design is unique, and because the floating supports are opposite in pairs, the acting forces are mutually offset, and the radial deviation of the cutter caused by the influence of external force can be reduced to the greatest extent.

2. The inner spring 7 can be replaced according to the working condition, and the pressure of the spring 7 is adjusted to meet the requirements of the rigidity of rough machining and the stability of finish machining.

3. Because two groups of supports are arranged at the front and the back, the stability of feeding and discharging is ensured, and at any time, at least one set of mechanism is arranged to ensure the stability of the cutter during processing.

4. Due to the fact that the support is added, the rigidity of the cutter is obviously increased, cutting amount can be increased during cutting, single-side cutting amount and cutting speed are increased on the original basis, machining time is greatly shortened, and machining cost is reduced.

5. The key point is that the mechanism can complete one-time clamping of the part to complete all processing, thereby ensuring the processing quality of the part and avoiding the accumulated error caused by repeated clamping and repeated positioning.

Claims (4)

1. The utility model provides a boring cutter complementary unit for large aperture BTA, a serial communication port, including body (1), body (1) is inside to be connected with axle sleeve (3) through ball bearing (2), body (1) periphery symmetry is equipped with four mounting surface (4), mounting surface (4) are gone up and are fixed with support frame (5) through bolt (12), elastic tube (6) are worn to be equipped with in support frame (5) inside, be equipped with between elastic tube (6) and body (1) spring (7), elastic tube (6) outer end is rotated and is equipped with spherical outside bearing (8).

2. The boring cutter auxiliary mechanism for large-aperture deep hole machining is characterized in that a long-strip-shaped through hole (9) is formed in the elastic cylinder (6), and a limiting rod (10) penetrating through the through hole (9) is fixed on the support frame (5).

3. The boring cutter auxiliary mechanism for large-aperture deep hole machining is characterized in that the limiting rod (10) is a hexagon socket head cap screw.

4. The boring tool auxiliary mechanism for large-aperture deep hole machining is characterized in that the outer spherical bearing (8) is fixed on the top of the elastic cylinder (6) through a cylindrical pin (11).

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