CN115674028A

CN115674028A - Elastic foil bearing top foil sand blasting device

Info

Publication number: CN115674028A
Application number: CN202211272582.XA
Authority: CN
Inventors: 姚嘉益; 张洋; 李姗; 陈茂才; 孙嘉男
Original assignee: 704th Research Institute of CSIC
Current assignee: 704th Research Institute of CSIC
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2023-02-03

Abstract

The invention relates to an elastic foil bearing top foil sand blasting device which comprises a workpiece sand blasting up-and-down moving mechanism, a workpiece sand blasting rotating mechanism, a workpiece sand blasting tool and a sand containing barrel, wherein the workpiece sand blasting up-and-down moving mechanism is connected with the workpiece sand blasting rotating mechanism, the top of the workpiece sand blasting rotating mechanism is connected with the workpiece sand blasting tool and the sand containing barrel through a bottom plate, the workpiece sand blasting up-and-down moving mechanism and the workpiece sand blasting rotating mechanism drive the workpiece sand blasting tool and the sand containing barrel to realize the synthesis of rotation and up-and-down movement, and the sand blasting can be carried out along a positive and negative spiral track. The up-and-down movement and the rotation around a fixed shaft of the foil are realized simultaneously through the lead screw and the supporting seat, and the rotation and the moving speed can be controlled by the thread pitch, the number of threads and the rotating speed of the motor of the lead screw; the foil is fixedly clamped through the workpiece sand blasting tool, so that deformation of the foil in the sand blasting process is reduced; the track of the sand blasting is a positive and negative spiral, and the track is not repeated due to the existence of the ratchet wheel, so that the uniform sand blasting is realized.

Description

Elastic foil bearing top foil sand blasting device

Technical Field

The invention relates to a sand blasting device for a foil bearing, in particular to a sand blasting device for a top-layer flat foil of a foil bearing.

Background

The foil bearing is widely used in high-speed rotating machinery, and the foil needs to be subjected to a sand blasting procedure during processing and manufacturing, so that impurities on the surface of the foil are cleaned, the smooth surface of the foil reaches certain roughness, and the bonding force during subsequent coating spraying is favorably improved. However, due to the lack of a special sand blasting and spraying device for the foil, the foil is usually manually held during sand blasting, high-pressure gas strongly sprays sand flow to the surface of the foil, the size and the thickness of the base foil are very thin, the periphery of the foil is free and free, the foil is easy to deform, and further the sand blasting is uneven, and the rejection rate is high; and at present, manual sand blasting and spraying operations are generally adopted, and the positioning precision and the sand blasting efficiency are low.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a sand blasting device for top foil of an elastic foil bearing, which can realize uniform and efficient sand blasting so as to reduce the labor intensity of workers and improve the efficiency and quality of sand blasting.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an elasticity foil bearing top layer foil sand blasting unit, includes work piece sandblast reciprocating mechanism, work piece sandblast slewing mechanism, work piece sandblast frock and flourishing sand bucket, work piece sandblast reciprocating mechanism connects work piece sandblast slewing mechanism, and work piece sandblast slewing mechanism top is passed through the bottom plate and is connected work piece sandblast frock and flourishing sand bucket, drives work piece sandblast frock and flourishing sand bucket by work piece sandblast reciprocating mechanism and work piece sandblast slewing mechanism and realizes the synthesis of rotatory and up-and-down motion, realizes that the sandblast can go on along positive and negative spiral orbit.

Further, work piece sandblast reciprocates the mechanism and includes the motor, the shaft coupling, the lead screw, the base, the bearing, the fixed plate, the slide, the nut, the motor is fixed in the base bottom, and the motor passes through lead screw and fixation nut and connects the slide, realizes the up-and-down motion of slide, and the slide passes through the supporting seat and connects the bottom plate.

Furthermore, the workpiece sand blasting rotating mechanism is provided with a ratchet mechanism at the tail end of the lead screw, the ratchet mechanism is connected with the rotating plate, the rotating plate is connected with the supporting seat, the motor drives the rotating plate and the supporting seat to rotate through the lead screw and the ratchet mechanism, the track is not repeated by utilizing the forward and reverse rotation of the motor and the ratchet, and the uniform sand blasting is ensured.

Further, connect work piece sandblast frock and flourishing sand bucket through bolt and magnet on the bottom plate, realize the location of installing and removing the in-process repeatedly of work piece sandblast frock and bottom plate through magnet.

Further, the workpiece sand blasting tool comprises a first tool and a second tool, the first tool and the second tool are compressed into a whole through three groups of bolts which form an angle of 120 degrees with each other, the inner diameter of the second tool is determined by the length of the foil, the inner side of the second tool is provided with a groove, the depth of the groove is determined by the width of the foil, and the second tool is spaced from the lower surface of the second tool by a certain distance and is used for fixing the foil.

Further, during sandblast, the spray tube of connecting the air supply stretches into in the second frock through the roof, carries out the sandblast to the foil of two internal fixation centre grippings of frock to through the external air supply pressure of control, and adjust steady motor speed and realize even sandblast, avoid the foil to warp.

Further, through increasing the lead screw stroke among the work piece sandblast reciprocating mechanism, increase the height of frock one in the work piece sandblast frock, can fold together a plurality of work pieces two from top to bottom.

The invention has the beneficial effects that:

according to the invention, the up-and-down movement and the rotation around the fixed shaft of the foil are realized simultaneously through the screw rod and the supporting seat, and the rotation and the moving speed can be controlled by the screw pitch, the number of lines and the rotating speed of the motor of the screw rod; the foil is fixedly clamped through the first tool and the second tool, so that deformation of the foil in the sand blasting process is reduced; the accurate positioning of the tool I, the tool II and the spray pipe is realized through four pairs of bolts and magnets; the track of the sand blasting is a positive and negative spiral, and the track is not repeated due to the existence of the ratchet wheel, so that the uniform sand blasting is realized.

Drawings

FIG. 1 is a sectional view showing the overall structure of a top foil blasting apparatus for an elastic foil bearing according to the present invention;

FIG. 2 is a schematic view of a combination structure of two tools;

fig. 3 is a magnet bolt connection diagram.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, the sandblasting apparatus for top foil of elastic foil bearing comprises a motor 16, a coupler 13, a lead screw 14, a base 17, a bearing 10, a magnet 6, a bolt 7, a supporting seat 8, a rotating plate 9, a fixing plate 12, a sliding plate 15, a nut 11, a first tool 4, a second tool 5, a nozzle 2, a top plate 1, a sand containing barrel 3, a ratchet mechanism 18 and a bottom plate 19.

The motor 16 is fixed at the bottom of the base 17, the motor 16 drives the screw rod 14 to rotate through the coupler 13, the fixing nut 11 arranged in the middle of the screw rod 14 plays a guiding role to realize the up-and-down movement of the sliding plate 15, and the supporting seat 8 is rotatably connected with the sliding plate 15 through the bearing 10 and moves up and down at the same time; a ratchet mechanism 18 is arranged at the tail end of the screw rod 14, and the ratchet mechanism 18 drives the rotating plate 9 to rotate; the rotating plate 9 is fixedly connected with the supporting seat 8, the upper end face of the supporting seat 8 is connected with the sand containing barrel 3 through the bottom plate 19, the bolt 7 and the magnet 6, the bottom of the sand containing barrel 3 is connected with the first tool 4 and the second tool 5 through the magnet 6, and the sand containing barrel 3, the first tool 4, the second tool 5, the magnet 6, the bolt 7 and the bottom plate 19 can rotate and move up and down under the action of the supporting seat 8. And the spray pipe 2 extends into the second tool 5 through the top plate 1 to perform sand blasting on the foil fixedly clamped in the second tool 5.

As shown in fig. 1 and 3, the bottom plate 19 is provided with four bolt holes, the magnet 6 is fixed on the bottom plate 19 by the bolts 7, the bottom of the tool I4 has the same structure, and the positioning of the tool I4 and the bottom plate 19 in the repeated assembly and disassembly process is realized by four pairs of magnets; the top plate 1 and the spray pipe 2 are fixed and integrally detached.

The second tool 5 and the first tool 4 are compressed into a whole through three groups of bolts which form an angle of 120 degrees with each other, the inner diameter of the second tool 5 is determined by the length of the foil, the inner side of the second tool is provided with a groove, the depth of the groove is determined by the width of the foil, and the second tool is spaced from the lower surface by a certain distance and used for fixing the foil.

In actual production, the stroke of the screw rod 14 can be properly increased, the height of the first tool 4 is increased, and the plurality of second tools 5 are stacked up and down, so that the efficiency is further improved.

After one-time sand blasting is finished, the motor can be controlled to rotate reversely, the screw rod 14 and parts on the supporting seat 8 are lowered, and sand blasting can be continuously performed in the lowering process.

The track of the sand blasting is a positive and negative spiral, the track is not repeated due to the existence of the ratchet wheel 18, so that the uniform sand blasting is realized, an external air source is utilized during the sand blasting, the pressure is well controlled, the rotating speed of the motor is stably regulated, the uniform sand blasting can be realized, and the deformation of foil is avoided.

Claims

1. The utility model provides an elasticity foil bearing top layer foil sand blasting unit which characterized in that: including work piece sandblast reciprocating mechanism, work piece sandblast slewing mechanism, work piece sandblast frock and flourishing sand bucket, work piece sandblast reciprocating mechanism connects work piece sandblast slewing mechanism, and work piece sandblast slewing mechanism top is passed through the bottom plate and is connected work piece sandblast frock and flourishing sand bucket, drives work piece sandblast frock and flourishing sand bucket by work piece sandblast slewing mechanism and work piece sandblast reciprocating mechanism and realizes the synthesis of rotatory and reciprocating motion, realizes that the sandblast can go on along positive and negative spiral orbit.

2. The apparatus of claim 1, wherein the top foil of the elastic foil bearing is sandblasted: the workpiece sand blasting up-and-down moving mechanism comprises a motor, a coupler, a lead screw, a base, a bearing, a fixing plate, a sliding plate and a nut, wherein the motor is fixed at the bottom of the base, the motor is connected with the sliding plate through the lead screw and the fixing nut, up-and-down movement of the sliding plate is realized, and the sliding plate is connected with a bottom plate through a supporting seat.

3. The apparatus of claim 2, wherein the top foil of the elastic foil bearing is sandblasted: the workpiece sand blasting rotating mechanism is characterized in that a ratchet mechanism is arranged at the tail end of a lead screw, the ratchet mechanism is connected with a rotating plate, the rotating plate is connected with a supporting seat, a motor drives the rotating plate and the supporting seat to rotate through the lead screw and the ratchet mechanism, the track is not repeated by utilizing the forward and reverse rotation of the motor and the ratchet, and the sand blasting is ensured to be uniform.

4. The apparatus of claim 1, wherein the top foil of the elastic foil bearing is sandblasted: connect work piece sandblast frock and flourishing husky bucket through bolt and magnet on the bottom plate, realize the location of installing and removing the in-process repeatedly of work piece sandblast frock and bottom plate through magnet.

5. The apparatus of claim 1, wherein the top foil of the elastic foil bearing is sandblasted: the workpiece sand blasting tool comprises a first tool and a second tool, wherein the first tool and the second tool are compressed into a whole through three groups of bolts which form an angle of 120 degrees with each other, the inner diameter of the second tool is determined by the length of a foil, the inner side of the second tool is provided with a groove, the depth of the groove is determined by the width of the foil, and the groove is away from the lower surface by a certain distance and is used for fixing the foil.

6. The apparatus of claim 5, wherein the top foil of the elastic foil bearing is sandblasted: during sandblast, the spray tube of connecting the air supply stretches into the second tool through the top plate, carries out sandblast on the foil fixedly clamped in the second tool, and realizes uniform sandblast through controlling the pressure of the external air supply and adjusting the rotating speed of the stable motor, thereby avoiding the deformation of the foil.

7. The apparatus of claim 1, wherein the top foil of the elastic foil bearing is sandblasted: the height of a first tool in the workpiece sand blasting tool is increased by increasing the stroke of the screw rod in the workpiece sand blasting up-down moving mechanism, and a plurality of second workpieces can be stacked up and down.