CN107538247B - A thin-walled rotary body clamping tool - Google Patents

Abstract

The present invention relates to a kind of thin-walled revolution workpiece clamping toolings, the working rotary table extended along the longitudinal direction including center of rotation axis, it further include the clamping arm unit for being mounted on working rotary table, clamping arm unit includes multiple extends along the longitudinal direction and for along the circumferentially spaced clamping arm of working rotary table, at least two support columns for the revolution positioning surface press cooperation with corresponding thin-walled revolution workpiece is equipped at intervals on each clamping arm along the longitudinal direction, each support column is respectively provided with the press end for being used to form the corresponding positioning cylindrical surface that coincide with the revolution positioning surface of the thin-walled revolution workpiece, working rotary table is equipped with for making each clamping arm that can radially carry out position adjustment along work sabot to obtain the mounting structure of the different radial dimension of positioning cylindrical surfaces.Suitable for the support Set and Positioning of various sizes of thin-walled revolution workpiece, the versatility of clamping tooling is effectively increased.

Description

A thin-walled rotary body clamping tool

technical field

The invention relates to a thin-walled rotary body clamping tool in the field of machining.

Background technique

In the field of machining, the processing of aluminum alloy thin-walled parts is very common, especially the processing of aluminum alloy cabins with a wall thickness of 2-5mm and φ400mm-φ1200mm of various large cabins. For aluminum alloy thin-walled rotary parts, it usually needs to mill the inner and outer peripheral surfaces. Due to the thin wall thickness, chattering tools are prone to occur. This requires the configuration of corresponding fixtures to reduce vibration to avoid the occurrence of vibrations during the processing of the parts. Deformation overcut problem.

In the processing method of aluminum alloy thin-walled cylindrical parts disclosed in the Chinese invention patent with the authorization announcement number of CN103949851B, it is mentioned that the corresponding tooling used in the inner hole finishing of the cylindrical part, including the positioning device of the corresponding size When using the collet, it is fixed by the three-jaw chuck positioning and clamping cylinder, and then the workpiece to be processed is put into the cylindrical positioning and clamping cylinder, the axial clamping sleeves at both ends are tightened, and the corresponding tool is selected for the cylinder. The inner hole of the shaped part is machined.

In the above-mentioned tooling, the size of the positioning and clamping cylinder needs to correspond to the size of the cylindrical part, so as to provide effective clamping and positioning, avoid the problem of chattering during processing, and thus improve the processing quality. However, due to the different radial specifications of the thin-walled revolving body, if a special tooling is used to correspond to a revolving body of the corresponding size, it is necessary to make toolings of different sizes according to different specifications, which will result in high production cost, poor versatility, and production cycle. It is relatively long and also affects the processing progress of the product.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a thin-walled rotary body clamping tool with good versatility and suitable for different clamping sizes.

In order to achieve the above purpose, the technical solution of the thin-walled revolving body clamping tool provided by the present invention is: a thin-walled revolving body clamping tool, including a working turntable whose rotation center axis extends in the front and rear directions, and a The clamping arm unit on the working turntable, the clamping arm unit includes a plurality of clamping arms extending in the front-rear direction and arranged at intervals along the circumferential direction of the working turntable, and at least two clamping arms are provided on each clamping arm in the front-rear direction. The supporting columns are press-fitted with the rotary positioning surfaces of the corresponding thin-walled rotary bodies, and each support column has a pressing end for forming a positioning cylindrical surface corresponding to the rotary positioning surface of the thin-wall rotary body. There is an installation structure for enabling each clamping arm to adjust the position along the radial direction of the working plate to obtain the positioning cylindrical surface with different radial dimensions.

The beneficial effects of the present invention are: the thin-walled revolving body clamping tool provided by the present invention includes a working turntable and a corresponding clamping arm unit, the clamping arm unit includes a plurality of clamping arms, and each clamping arm is respectively provided with a support Since the position of the clamping arm along the radial direction of the working turntable can be adjusted through the installation structure on the working turntable, the positioning cylindrical surface formed by the top pressing end of the support column with different radial dimensions can be adjusted to obtain different clamping The positioning size is suitable for the support, clamping and positioning of thin-walled rotary bodies of different sizes, which effectively improves the versatility of clamping tooling.

The support column is a vibration-damping support column. The support and positioning of the thin-walled revolving body is realized by the vibration-damping support column, which realizes the vibration-damping processing efficiency and effectively controls the processing deformation during the processing.

The vibration-damping support column is a vibration-damping screw detachably assembled on the corresponding clamping arm. The shock-absorbing support column adopts shock-absorbing screws, which is convenient for installation and replacement.

A plurality of screw mounting holes for mounting the vibration-damping screws are provided on the clamping arm at intervals along the front-rear direction. In this way, an appropriate number of vibration-damping screws can be correspondingly arranged according to the axial length of the thin-walled rotary member to be clamped, thereby improving the clamping stability.

The installation structure includes a plurality of radial adjustment hole units arranged on the working turntable and distributed along the circumferential direction of the working turntable at intervals, and each radial adjustment hole unit includes a plurality of adjustment holes distributed along the radial direction of the working turntable respectively. Each clamping arm is fixed on the corresponding clamping arm mounting seat, and the clamping arm mounting seat is installed at the corresponding radial adjustment hole unit in an adjustable radial position along the working turntable. The installation structure on the working turntable for adjusting the radial position of the clamping arm includes a radial adjustment hole unit, and the radial adjustment hole unit includes a plurality of adjustment holes spaced and distributed along the radial direction of the working turntable.

The clamping arm mounting seat includes a seat body which is installed on the working turntable and is adjustable in radial position along the working turntable. The seat body is fixed with a mounting arm extending in the front and rear directions, and the clamping arm is positioned along the front and rear directions. Adjustable detachable couplings are attached to the corresponding mounting arms. The clamping arm mounting seat includes a seat body and a corresponding mounting arm, which facilitates the fixed installation of the clamping arm and the clamping arm mounting seat.

The seat body is provided with bolt mounting holes correspondingly penetrating through the adjustment holes for the corresponding radial adjustment hole units, and the seat body is detachably fixed on the work surface through the fastening bolts inserted in the bolt mounting holes. on the turntable.

The clamping arm has a fixed arm segment that is fastened and assembled correspondingly to the mounting arm and a cantilevered arm segment overhanging the front side of the mounting arm, and the width of the cantilevered arm segment gradually decreases from back to front.

The clamping tooling has two sets of the clamping arm units, one set of the clamping arm unit is an inner circle clamping unit, the top pressing end of the support column of the inner circle clamping unit is arranged inward, and the other set of the clamping arm unit is an outer clamping unit. For the round clamping unit, the top pressing end of the support column of the external aid clamping unit is arranged outward.

The clamping arm is installed on the work turntable in a position adjustable along the front-rear direction.

Description of drawings

1 is a schematic structural diagram of Embodiment 1 of a thin-walled rotary body clamping tool provided by the present invention;

Figure 2 is a side view of the clamping tool shown in Figure 1;

Fig. 3 is the structural representation of the working turntable in Fig. 1;

Fig. 4 is the structural representation of the clamping arm in Fig. 1;

Figure 5 is a front view of the clamping arm shown in Figure 4;

Fig. 6 is the structural representation of the clamping arm base in Fig. 1;

Figure 7 is a front view of the clamping arm base shown in Figure 6;

Figure 8 is a cross-sectional view of the clamping arm base shown in Figure 7;

Figure 9 is a schematic diagram of the use state of the clamping tool shown in Figure 1 when the thin-walled revolving body is clamped;

FIG. 10 is a schematic structural diagram of Embodiment 2 of the thin-walled rotary body clamping tool provided by the present invention.

Detailed ways

The embodiments of the present invention will be further described below with reference to the accompanying drawings.

The specific embodiment 1 of the thin-walled rotary body clamping tool provided by the present invention:

As shown in FIGS. 1 to 8 , the clamping tool in this embodiment specifically includes a work turntable 1 whose rotation center axis extends in the front-rear direction. A clamping arm unit is provided on the front side of the work plate 1 . The clamping arm unit is specifically an outer circular clamping unit.

In this embodiment, the clamping arm unit specifically includes 8 clamping arms 22 extending in the front-rear direction and spaced apart along the axial direction of the work turntable. The disc is installed on the front side of the work turntable 1 in an adjustable radial position. In fact, there is an installation structure on the work turntable 1 that can make the mounting seat of the clamping arm move and adjust along the radial direction of the work turntable. The front side of the turntable is provided with radial adjustment units spaced along the circumference of the working turntable. Each radial adjustment unit includes a plurality of adjustment holes 10 extending radially along the working turntable. There are respectively provided bolt mounting holes corresponding to the adjustment holes of the corresponding radial adjustment hole unit. Can. When moving the position, loosen the fastening bolts, move the clamping arm mounting seat in place, and then use the fastening bolts to fix the clamping arm mounting seat, and then the adjustment along the radial position of the working turntable can be realized.

In this embodiment, as shown in FIG. 6 , FIG. 7 and FIG. 8 , the clamping arm mounting seat 21 specifically includes a seat body 210 which is installed on the work turntable for being adjustable in position along the radial direction of the work turntable. Mounting arms 212 extending in the front and rear are fixed, and each clamping arm 22 is fastened and assembled on the corresponding mounting arm through a bolt connection structure.

As shown in FIG. 4 and FIG. 5 , correspondingly, the clamping arm 22 includes a fixed arm section 220 that is fastened and assembled with the above-mentioned mounting arm, and a cantilevered arm section 221 that is overhanging the front side of the mounting arm. The width dimension of the arm section 221 gradually decreases from back to front.

In fact, the mounting arm 212 is provided with a plurality of fixed mounting holes extending in the front-rear direction, which enables the fixed arm section 220 of the clamping arm 22 to be detachably coupled to the mounting arm in a position-adjustable front-rear direction. The axial length of the thin-walled revolving body to be supported and positioned adjusts the position of the clamping arm, improving the versatility of the entire clamping tool.

The clamping arm 22 is provided with three supporting columns 4 spaced in the front and rear directions for supporting the corresponding thin-walled revolving body by pressing. Correspondingly, a plurality of screw mounting holes 222 for mounting the vibration-damping screws are provided on the clamping arm 22 at intervals along the front-rear direction.

In fact, each support column on the clamping arm 22 has a top pressing end for press fit corresponding to the rotary positioning surface on the thin-walled rotary body. In fact, when in use, the support of the same adjusting arm unit The top pressing end of the column 4 will form a positioning cylindrical surface corresponding to the rotating positioning surface on the corresponding thin-walled rotating body. When in use, the positioning cylinders with different radial dimensions can be obtained by moving and adjusting the clamping arm along the radial direction of the work plate. surface, corresponding to clamping thin-walled revolving bodies of different radial dimensions.

As shown in FIG. 9 , the processing of the inner cavity is taken as an example. At this time, the outer positioning rotary surface of the thin-walled rotary body is supported and positioned by the clamping unit shown in FIG. 1 . The appropriate clamping arm unit can be selected according to the position of the corresponding rotary positioning surface of the thin-walled rotary body 200 to be processed, and the clamping arm can be positioned and installed at the corresponding radial position of the work turntable 1 according to the radial size of the rotary positioning surface. place. The vibration-damping screw on the clamping arm 22 realizes the effective vibration-damping support for the thin-walled revolving body 200, thereby ensuring the clamping and positioning effect.

When the thin-walled revolving body of other radial dimensions needs to be clamped and positioned, the clamping arm and the clamping arm mounting seat are directly pulled out from the work gripping plate, and then inserted into the adjustment hole at the corresponding position to realize quick installation. dismantle.

In this embodiment, the top pressing end of the support column of the clamping arm unit is arranged inward, and is mainly used for supporting and positioning the outer positioning rotary surface of the thin-walled rotary body. In specific use, it can also be directly turned over so that the top pressing end of the support column is arranged outward, and at this time, it can be used to support and position the inner positioning rotary surface of the thin-walled rotary body.

The present invention also provides Embodiment 2 of a thin-walled rotary body clamping tool:

As shown in FIG. 10 , the main difference from Embodiment 1 is that two sets of clamping arm units are installed on the front side of the working turntable, one set of clamping arm units is the inner circle clamping unit 3, and the other set of clamping arm units is the inner circle clamping unit 3. The unit is the outer circle clamping unit 2. The structures of the two sets of clamping arm units are the same, but the orientations of the two sets of clamping arm units are different. It is not repeated here.

In the above two embodiments, the support column adopts vibration damping screws. In other embodiments, the support column may also adopt a corresponding column structure with vibration-damping rubber pads.

In the above two embodiments, a plurality of screw mounting holes extending in the front-rear direction are arranged on the clamping arm, so that an appropriate number of vibration-damping screws can be selected according to the axial height of the thin-walled revolving body to be processed, so as to achieve the purpose of rational utilization. . In other embodiments, a plurality of shock-absorbing screws can also be directly installed on the clamping arm, and there is no need to disassemble and assemble them again and again.

In the above two embodiments, the clamping arm is detachably mounted on the clamping arm mounting seat to realize its position adjustment in the front-rear direction, that is, the axial direction of the working turntable. In other embodiments, if the length of the clamping arm itself can be telescopic, it can also meet the support requirements of thin-walled rotary bodies with different axial length requirements.

Claims (10)

1. A thin-walled rotary body clamping tool, characterized in that it comprises a working turntable (1) whose rotation center axis extends in the front-rear direction, and also includes a clamping arm unit for being installed on the working turntable. The clamping arm unit It includes a plurality of clamping arms (22) extending in the front-rear direction and arranged at intervals along the circumference of the working turntable, and at least two clamping arms (22) are provided on each clamping arm (22) at intervals along the front-rear direction for connecting with the corresponding thin-walled revolving body (200) the support column (4) press-fitted against the rotary positioning surface of the thin-walled rotary body, each support column (4) respectively has a top pressing end for forming a positioning cylindrical surface corresponding to the rotary positioning surface of the thin-walled rotary body, The working turntable is provided with an installation structure for enabling each clamping arm to adjust its position along the radial direction of the working turntable to obtain the positioning cylindrical surfaces of different radial dimensions. 2 . The thin-walled rotary body clamping tool according to claim 1 , wherein the support column ( 4 ) is a vibration-damping support column. 3 . 3 . The thin-walled rotary body clamping tool according to claim 2 , wherein the vibration-damping support column is a vibration-damping screw detachably assembled on the corresponding clamping arm. 4 . 4 . The thin-walled rotary body clamping tool according to claim 3 , wherein the clamping arm is provided with a plurality of screw mounting holes ( 222 ) spaced in the front-rear direction along the front-rear direction. 5 . 5. The thin-walled rotary body clamping tool according to any one of claims 1 to 4, wherein the installation structure comprises a plurality of spaced apart along the circumferential direction of the working turntable provided on the working turntable. Radial adjustment hole units, each radial adjustment hole unit respectively includes a plurality of adjustment holes (10) spaced apart along the radial direction of the working turntable, and each clamping arm (22) is fixed on the corresponding clamping arm mounting seat (21) Above, the clamping arm mounting seat (21) is installed at the corresponding radial adjustment hole unit in an adjustable radial position along the working turntable. 6. The thin-walled rotary body clamping tool according to claim 5, wherein the clamping arm mounting seat comprises a seat body (210) for being installed on the work turntable whose radial position is adjustable along the work turntable. ), a mounting arm (212) extending along the front and rear is fixed on the seat body, and the clamping arm (22) is detachably connected to the corresponding mounting arm in a position adjustable in the front and rear directions. 7 . The thin-walled rotary body clamping tool according to claim 6 , wherein the seat body ( 210 ) is provided with bolt mounting holes ( 211 ) corresponding to the adjustment holes of the corresponding radial adjustment hole units. 8 . ), the seat body (210) is detachably fixed on the working turntable (1) by means of fastening bolts inserted in the bolt installation holes. 8 . The thin-walled rotary body clamping tool according to claim 6 , wherein the clamping arm has a fixed arm section ( 220 ) that is fastened and assembled corresponding to the installation arm ( 212 ), and a fixed arm section ( 220 ) that is cantilevered over the mounting arm ( 212 ). 9 . The cantilever arm segment (221) on the front side of the mounting arm (212), the width dimension of the cantilever arm segment gradually decreases from back to front. 9. The thin-walled rotary body clamping tool according to any one of claims 1 to 4, characterized in that: the clamping tool has two sets of said clamping arm units, and one set of clamping arm units is an inner circle device In the clamping unit, the top pressure end of the support column of the inner circle clamping unit is arranged inward, and the other sleeve clamping arm unit is an outer circle clamping unit, and the top pressure end of the support column of the outer circle clamping unit is arranged outward. 10. The thin-walled rotary body clamping tool according to any one of claims 1 to 4, wherein the clamping arm is installed on the working turntable in a position adjustable in the front-rear direction.