CN217343626U

CN217343626U - Axial hole precision positioning machining clamp for thin-wall arc-shaped part

Info

Publication number: CN217343626U
Application number: CN202221170776.4U
Authority: CN
Inventors: 王熔; 彭思泽; 彭云杰; 李齐
Original assignee: Avic Power Zhuzhou Aviation Parts Manufacturing Co ltd
Current assignee: Hunan Xingtu Aerospace And Spacecraft Manufacturing Co ltd
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-09-02
Anticipated expiration: 2032-05-16

Abstract

The utility model discloses an axial hole precision positioning processing clamp for a thin-wall arc-shaped piece, relating to the technical field of thin-wall arc-shaped piece processing; the positioning problem during the processing of the thin-wall arc-shaped part is solved; including driving ring fixedly connected with branch all around, branch one end is rotated and is connected with flexible jack catch structure, flexible jack catch structure one end sliding connection has the jack catch groove, one side fixedly connected with change the groove, main shaft one side is opened there is the rotation groove, it has the fixed slot to rotate groove one side and open, the change rotates to be connected in and rotates the groove, change one side transmission and be connected with the gim peg, gim peg fixed connection is in the fixed slot, flexible jack catch structure includes the transfer line, the jack catch pole, the stationary dog, oblique claw and slider, transfer line one end is rotated and is connected in branch and slider, slider one side sliding connection is in the jack catch inslot, slider one end fixedly connected with jack catch pole, jack catch pole one end fixedly connected with stationary dog and oblique claw. The utility model has the advantages of make things convenient for numerical control lathe to carry out finish machining to the work piece bore when preventing that the machined part from removing.

Description

Axial hole precision positioning machining clamp for thin-wall arc-shaped part

Technical Field

The utility model relates to a thin wall arc processes technical field, especially relates to an axial hole precision positioning adds clamping apparatus for thin wall arc.

Background

The thin-wall arc-shaped parts are widely applied to the aerospace industry, such as sealing rings, turbine outer rings and the like. But the precision requirement is high, and the numerical control milling mode is usually adopted for processing. However, the traditional thin-wall arc-shaped part is directly processed into a thin-wall cylinder by a bar material, then the thin-wall cylinder is cut into an arc-shaped part ring by a wire, after the experimental improvement processing flow, the thin-wall cylinder needs to be subjected to numerical control finish machining once after heat treatment, and a conventional clamp cannot clamp the thin-wall cylinder after heat treatment, so that a brand-new axial hole precision positioning processing device is needed.

Through retrieval, the Chinese patent with the publication number of CN108705126B discloses a normal porous deformation-preventing accurate processing method for an arc-shaped thin-wall pipe fitting, which comprises a tire body, a drill plate, a die pin and a positioning pin; the tyre body is of a concave-like structure with a radian on the upper surface, the bottom of a concave-like groove forms an obtuse angle with the horizontal plane, spaces for placing parts are formed between the tops of two sides of the concave-like groove and the drilling template, and the bottoms of two sides of the concave-like groove are wedge-shaped bodies with positioning pins. The following disadvantages exist in the above patents: the clamping device can clamp the thin-wall arc-shaped part, but only can process a hole on one side of the thin wall, cannot process an axial hole, and cannot meet the problem of thin-wall finish machining after the process improvement of the thin-wall arc-shaped part.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an axial hole precision positioning processing clamp for a thin-wall arc-shaped part.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a precision positioning and processing clamp for an axial hole of a thin-wall arc-shaped piece comprises a main shaft and a transmission ring, wherein a supporting rod is fixedly connected to the periphery of the transmission ring, one end of the supporting rod is rotatably connected with a telescopic clamping jaw structure, and one end of the telescopic clamping jaw structure is slidably connected with a clamping jaw groove;

the transmission ring is fixedly connected with change, and main shaft one side is opened there is the rotation groove, and it has the fixed slot to rotate groove one side, and the change rotates to be connected in rotating the groove, and change one side transmission is connected with the gim peg, and gim peg fixed connection is in the fixed slot.

Preferably: the telescopic claw structure comprises a transmission rod, a claw rod, a fixed claw, an inclined claw and a sliding block, one end of the transmission rod is rotatably connected to the supporting rod and the sliding block, one side of the sliding block is slidably connected to the claw groove, one end of the sliding block is fixedly connected with the claw rod, and one end of the claw rod is fixedly connected with the fixed claw and the inclined claw.

Further: and one side of the clamping jaw groove is fixedly connected with a clamping ring, and the inner side of the clamping ring is fixedly connected with the main shaft.

Further: one side of the main shaft is fixedly connected with a connecting seat, and one side of the connecting seat is provided with a chuck groove.

As an optimized scheme of the utility model: one side of the connecting seat is fixedly connected with a three-jaw chuck, one side of the three-jaw chuck is rotatably connected with a numerical control lathe, and one side of the numerical control lathe is slidably connected with a tool apron.

As a further aspect of the present invention: one end of the main shaft is fixedly connected with a screw, one side of the screw is in transmission connection with a threaded ring, and one side of the screw is provided with an axial groove.

As the utility model discloses further scheme again: one side of the threaded ring is rotatably connected with a bearing, one side of the bearing is fixedly connected with an axial sliding rod, and one side of the axial sliding rod is fixedly connected with a reinforcing ring.

On the basis of the scheme: one side of the reinforcing ring is fixedly connected with a workpiece, and the outer side of the workpiece is fixedly connected with the fixed claw and the inclined claw.

On the basis of the scheme: the screw rod one end fixedly connected with preceding baffle, preceding baffle one end fixedly connected with speculum, blade holder one end fixedly connected with tool bit and reflection inductor.

Further, a method for precisely positioning and processing the axial hole of the thin-wall arc-shaped part by using the clamp comprises the following steps:

s1: placing the workpiece in the middle of the inclined claw, and rotating the rotating ring to fix the edge of the workpiece by the inclined claw and the fixed claw;

s2, rotating the fixing bolt to fix the rotating ring;

and S3, rotating the bearing to move the axial slide rod backwards and fix the front of the workpiece.

The utility model has the advantages that:

1. the utility model provides an axial hole precision positioning adds clamping apparatus for thin wall arc spare, can follow the fixed machined part of three direction of machined part through using an axial hole precision positioning adds clamping apparatus for thin wall arc spare, makes things convenient for numerical control lathe to carry out the advantage of finish machining to the work piece bore when preventing that the machined part from removing.

2. The utility model provides an axial hole precision positioning adds clamping apparatus for thin wall arc spare, sends infrared ray or laser forward through installing speculum and reflection inductor, when can not receive the light that the speculum refracted back, explains that the main shaft takes place to deflect, can connect the numerical control lathe at this moment and shut down and prevent further loss advantage.

3. The utility model provides an axial hole precision positioning adds clamping apparatus for thin wall arc spare, is through having that screw ring fastening direction is opposite with processing rotation direction, can be at the processing rotation in-process from the tight advantage that prevents that the reinforcing ring is not hard up.

Drawings

Fig. 1 is a schematic view of an assembly structure of the clamp of the present invention;

fig. 2 is a side view of the first clamp of the present invention;

fig. 3 is a rear view of the clamp of the present invention;

FIG. 4 is a schematic diagram of a side view of the clamp of the present invention;

fig. 5 is a schematic front view of the clamp of the present invention.

In the figure: the device comprises a numerical control lathe 1, a tool apron 2, a tool bit 3, a reflection inductor 4, a three-jaw chuck 5, a machined part 6, a reflector 7, a connecting seat 8, a main shaft 9, a rotating ring 10, a rotating groove 11, a fixing groove 12, a fixing bolt 13, a transmission ring 14, a support rod 15, a transmission rod 16, a clamping ring 17, a clamping groove 18, a clamping rod 19, a fixing jaw 20, a slant jaw 21, a sliding block 22, a screw rod 23, a threaded ring 24, a bearing 25, an axial groove 26, an axial sliding rod 27, a front baffle 28, a reinforcing ring 29 and a chuck groove 30.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by one of ordinary skill in the art as appropriate.

Example 1:

3-5, the clamp comprises a main shaft 9 and a transmission ring 14, wherein support rods 15 are welded around the transmission ring 14, one end of each support rod 15 is rotatably connected with a telescopic claw structure, the telescopic claw structure can clamp and fix a workpiece 6 from the outer side of the workpiece 6 in a circle manner, so that the workpiece 6 can be kept stable during boring and finish machining of a numerical control lathe 1, and one end of the telescopic claw structure is slidably connected with a claw groove 18;

transmission ring 14 one side fixedly connected with change 10, main shaft 9 one side is opened has and is rotated groove 11, rotates groove 11 one side and opens and has fixed slot 12, change 10 rotates to be connected in rotating groove 11, rotates change 10, and accessible transmission ring 14 drives opening and shutting of flexible jack catch structure, and change 10 one side transmission is connected with gim peg 13, and gim peg 13 fixed connection is in fixed slot 12, and the rotatable chucking fixed slot 12 of gim peg 13 and change 10 make it can not remove when processing is rotated.

The problem of stable clamping of the telescopic clamping jaw structure is solved; as shown in fig. 3-4, the telescopic claw structure comprises a transmission rod 16, claw rods 19, a fixed claw 20, a slant claw 21 and a sliding block 22, wherein one end of the transmission rod 16 is rotatably connected to the support rod 15 and the sliding block 22, and when the support rod 15 rotates along with the transmission ring 14, the transmission rod 16 is driven to move, so that the sliding block 22 moves in the claw grooves 18, and the relative distance between the claw rods 19 is changed;

a claw rod 19 is fixed at one end of the sliding block 22 through a screw, a fixed claw 20 and a slant claw 21 are fixedly connected at one end of the claw rod 19, and the fixed claw 20 and the slant claw 21 can fix the inclined outer edge of the workpiece 6.

In order to solve the problem of stability of the moving track of the slide 22; as shown in fig. 2-4, a clamping ring 17 is fixed to one side of the jaw groove 18 by screws, and the inner side of the clamping ring 17 is fixedly connected to the main shaft 9, so that the moving path of the slider 22 is stable, and the clamping accuracy is not affected by shaking.

In order to solve the problem that the main shaft 9 is fixedly connected with the processing mechanism; as shown in fig. 3-5, a connecting seat 8 is fixedly connected to one side of the spindle 9, a chuck groove 30 is formed in one side of the connecting seat 8, a fixing block of the processing device can be inserted and fixed by the chuck groove 30, the number of the chuck grooves 30 can be changed according to different types of connected chucks, and the spindle 9 can be always located in the center of the chuck.

In order to solve the problem of assembly of the connecting socket 8; as shown in fig. 1, a three-jaw chuck 5 is fixed on one side of the connecting seat 8 by a screw, the connecting seat 8 is fixed on the three-jaw chuck 5 by a bolt except the three-jaw chuck 5, one side of the three-jaw chuck 5 is rotatably connected with a numerically controlled lathe 1, and one side of the numerically controlled lathe 1 is slidably connected with a tool apron 2.

When the numerical control lathe is used, the telescopic clamping jaw structure can clamp and fix the workpiece 6 from the outer side of the workpiece 6 by one circle, so that the workpiece 6 can be kept stable during boring and finish machining of the numerical control lathe 1, the rotating ring 10 is rotated, the opening and closing of the telescopic clamping jaw structure can be driven by the transmission ring 14, and the fixing bolt 13 can rotate and clamp the fixing groove 12 and the rotating ring 10, so that the fixing groove and the rotating ring 10 cannot move during machining and rotation;

when the supporting rod 15 rotates along with the transmission ring 14, the transmission rod 16 is driven to move, the sliding block 22 moves in the claw groove 18, the relative distance between the claw rods 19 is changed, and the fixed claw 20 and the inclined claw 21 can fix the inclined outer edge of the workpiece 6;

clamping ring 17 makes slider 22's movement path stable, can not take place to rock and influence the centre gripping accurate, and chuck groove 30 can make processingequipment's fixed block stretch into fixedly, and the quantity of chuck groove 30 can be according to the different changes of chuck type connected, can ensure that main shaft 9 is at the chuck center all the time, and connecting seat 8 is fixed in three-jaw chuck 5 through the bolt except three-jaw chuck 5.

Example 2:

a precise positioning and processing clamp for an axial hole of a thin-wall arc-shaped piece is disclosed, as shown in figure 1, and aims to solve the problem that a processed piece 6 can deflect unstably during rotation; the present embodiment is modified from embodiment 1 as follows: one end of the main shaft 9 is fixedly connected with a screw 23, one side of the screw 23 is in transmission connection with a threaded ring 24, the fastening direction of the threaded ring 24 is opposite to the processing rotating direction and can be self-tightened in the processing rotating process, one side of the screw 23 is provided with an axial groove 26, one side of the threaded ring 24 is in rotating connection with a bearing 25, one side of the bearing 25 is fixedly connected with an axial slide bar 27, and the rotating threaded ring 24 moves the axial slide bar 27 through the bearing 25 in the advancing and retreating processes;

the reinforcing ring 29 is fixed on one side of the axial slide rod 27 through a screw, the reinforcing ring 29 is moved forwards to contact the workpiece 6, so that the workpiece 6 is additionally fixed, the workpiece 6 is fixedly connected on one side of the reinforcing ring 29, the outer side of the workpiece 6 is fixedly connected with the fixed claw 20 and the inclined claw 21, and the workpiece 6 is fixed from three angles to prevent deviation.

In order to solve the problem of prompting when the main shaft 9 deflects; as shown in fig. 1, a front baffle 28 is fixed to one end of the screw 23 by a screw, the front baffle 28 prevents the axial sliding rod 27 from sliding off, a reflector 7 is fixedly connected to one end of the front baffle 28, the reflector 7 can reflect light, a tool bit 3 and a reflective sensor 4 are fixed to one end of the tool apron 2 by a screw, the reflective sensor 4 emits infrared rays or laser forward, when the light reflected by the reflector 7 cannot be received, the spindle 9 deflects, and at this time, the spindle can be connected to the numerically controlled lathe 1 to stop to prevent further loss.

In use, the fastening direction of the threaded ring 24 is opposite to the machining rotation direction, the threaded ring can be self-tightened during the machining rotation, and the axial sliding rod 27 is moved by the bearing 25 during the advancing and retreating processes of the threaded ring 24; the reinforcing ring 29 is moved forward to contact the workpiece 6, so that the workpiece 6 is additionally fixed, and the workpiece 6 is fixed from three angles, so that the deviation is prevented;

the reflection sensor 4 emits infrared rays or laser forward, and when the light refracted by the reflector 7 is not received, the main shaft 9 is deflected, and the numerical control lathe 1 can be connected to stop at the moment to prevent further loss.

In the above description, for the preferred embodiments of the present invention, the protection scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention by combining the prior art or the public general knowledge within the technical scope of the present invention, which is disclosed by any person skilled in the art, should be covered within the protection scope of the present invention.

Claims

1. The precision positioning and processing clamp for the axial hole of the thin-wall arc-shaped part is characterized by comprising a main shaft (9) and a transmission ring (14), wherein supporting rods (15) are fixedly connected to the periphery of the transmission ring (14), one end of each supporting rod (15) is rotatably connected with a telescopic clamping jaw structure, and one end of each telescopic clamping jaw structure is slidably connected with a clamping jaw groove (18);

the rotary ring is fixedly connected with a rotary ring (10) on one side of a transmission ring (14), a rotating groove (11) is formed in one side of a main shaft (9), a fixing groove (12) is formed in one side of the rotating groove (11), the rotary ring (10) is rotatably connected to the rotating groove (11), a fixing bolt (13) is in transmission connection with one side of the rotary ring (10), and the fixing bolt (13) is fixedly connected to the fixing groove (12).

2. The precise positioning and machining clamp for the axial hole of the thin-wall arc-shaped part is characterized in that the telescopic claw structure comprises a transmission rod (16), a claw rod (19), a fixed claw (20), an inclined claw (21) and a sliding block (22), one end of the transmission rod (16) is rotatably connected to the support rod (15) and the sliding block (22), one side of the sliding block (22) is slidably connected into the claw groove (18), one end of the sliding block (22) is fixedly connected with the claw rod (19), and one end of the claw rod (19) is fixedly connected with the fixed claw (20) and the inclined claw (21).

3. The precision positioning machining clamp for the axial hole of the thin-wall arc-shaped piece is characterized in that a clamping ring (17) is fixedly connected to one side of the clamping jaw groove (18), and the inner side of the clamping ring (17) is fixedly connected to the main shaft (9).

4. The clamp for precisely positioning and processing the axial hole of the thin-walled arc-shaped piece as claimed in claim 1, wherein a connecting seat (8) is fixedly connected to one side of the main shaft (9), and a chuck groove (30) is formed in one side of the connecting seat (8).

5. The precise positioning and processing clamp for the axial hole of the thin-wall arc-shaped piece as claimed in claim 4, wherein a three-jaw chuck (5) is fixedly connected to one side of the connecting seat (8), a numerically controlled lathe (1) is rotatably connected to one side of the three-jaw chuck (5), and a tool apron (2) is slidably connected to one side of the numerically controlled lathe (1).

6. The precision positioning and machining clamp for the axial hole of the thin-walled arc-shaped piece as claimed in claim 5, wherein one end of the main shaft (9) is fixedly connected with a screw rod (23), one side of the screw rod (23) is in transmission connection with a threaded ring (24), and one side of the screw rod (23) is provided with an axial groove (26).

7. The precise positioning and processing clamp for the axial hole of the thin-wall arc-shaped part as claimed in claim 6, wherein one side of the threaded ring (24) is rotatably connected with a bearing (25), one side of the bearing (25) is fixedly connected with an axial sliding rod (27), and one side of the axial sliding rod (27) is fixedly connected with a reinforcing ring (29).

8. The precise positioning and processing clamp for the axial hole of the thin-wall arc-shaped part according to claim 7, characterized in that a workpiece (6) is fixedly connected to one side of the reinforcing ring (29), and the outer side of the workpiece (6) is fixedly connected to the fixed claw (20) and the inclined claw (21).

9. The precise positioning and machining clamp for the axial hole of the thin-wall arc-shaped part according to claim 7 is characterized in that one end of the screw rod (23) is fixedly connected with a front baffle (28), one end of the front baffle (28) is fixedly connected with the reflector (7), and one end of the tool apron (2) is fixedly connected with the tool bit (3) and the reflection inductor (4).