CN107538247A - A kind of thin-walled revolution workpiece clamping tooling - Google Patents

Abstract

The invention relates to a clamping tool for a thin-walled rotary body, which includes a working turntable whose central axis of rotation extends along the front-to-back direction, and a clamping arm unit for being installed on the working turntable. The clamping arm unit includes a plurality of Clamping arms that are extended and arranged at intervals along the circumference of the working turntable, each clamping arm is provided with at least two supporting columns at intervals along the front and rear direction for press fit with the rotary positioning surface of the corresponding thin-walled rotary body, each The support columns respectively have pressing ends for forming a positioning cylindrical surface corresponding to the rotary positioning surface of the thin-walled rotary body, and the working turntable is provided with a position adjustment function for each clamping arm along the radial direction of the working loading plate. In order to obtain the installation structure of the positioning cylindrical surface with different radial dimensions. It is suitable for supporting and clamping positioning of thin-walled rotary bodies of different sizes, and effectively improves the versatility of the clamping tooling.

Description

A clamping tool for thin-walled rotary body

technical field

The invention relates to a thin-wall rotating body clamping tool in the field of mechanical processing.

Background technique

In the field of mechanical processing, the processing of aluminum alloy thin-walled parts is very common, especially the processing of various large-scale cabins of aluminum alloy cabins with a diameter of φ400mm-φ1200mm and a wall thickness of 2-5mm. For aluminum alloy thin-walled rotary parts, it usually needs to mill the inner and outer peripheral surfaces. Due to the thinner wall thickness, it is easy to cause tool chatter, so it is necessary to configure corresponding fixtures to achieve vibration reduction to avoid parts during processing. Deformation overcut problem.

In the processing method of aluminum alloy thin-walled cylindrical parts disclosed in the Chinese invention patent with the authorized notification number CN103949851B, it is mentioned that the corresponding tooling used when finishing the inner hole of the cylindrical part, including the positioning device of the corresponding size The chuck, when in use, is clamped and fixed by the three-jaw chuck positioning and clamping cylinder, then put the workpiece to be processed into the cylindrical positioning and clamping cylinder, tighten the axial clamping sleeves at both ends, and select the corresponding tool to align the cylinder The inner hole of the shaped part is machined.

In the above-mentioned tooling, the size of the positioning clamping cylinder needs to correspond to the size of the cylindrical part, so as to provide effective clamping and positioning, avoid vibration problems during processing, and improve processing quality. However, due to the different radial specifications of the thin-walled rotary body, if special tooling is used to correspond to the corresponding size of the rotary body, it is necessary to make tooling of different sizes according to different specifications, the production cost is high, the versatility is not good, and the production cycle Relatively long, also affects the progress of product processing.

Contents of the invention

The object of the present invention is to provide a thin-walled rotating body clamping tool with good versatility and applicable to different clamping sizes.

In order to achieve the above purpose, the technical solution of the thin-walled rotary body clamping tool provided by the present invention is: a thin-walled rotary body clamping tooling, including a working turntable whose central axis of rotation extends along the front-to-back direction, and also includes a The clamping arm unit on the working turntable, the clamping arm unit includes a plurality of clamping arms extending along the front and rear direction and arranged at intervals along the circumference of the working turntable, each clamping arm is provided with at least two clamping arms spaced along the front and rear direction For the support columns that press fit with the rotary positioning surface of the corresponding thin-walled rotary body, each support column has a pressing end for forming a positioning cylindrical surface corresponding to the rotary positioning surface of the thin-walled rotary body, and the working turntable A mounting structure is provided on the top for enabling each clamping arm to adjust its 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 rotary 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 column, since the position of the clamping arm along the radial direction of the work turntable can be adjusted through the installation structure on the work turntable, the positioning cylindrical surface formed by the top pressure end of the support column with different radial dimensions can be adjusted to obtain different clamping The positioning size is suitable for supporting and clamping positioning of thin-walled rotary bodies of different sizes, which effectively improves the versatility of the clamping tooling.

The support column is a vibration-damping support column. The support and positioning of the thin-walled rotary body is realized by using the vibration-damping support column, which realizes the vibration-damping processing efficiency and effectively controls the processing deformation generated 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 specifically adopts shock-absorbing screws, which are convenient for installation and replacement.

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

The installation structure includes a plurality of radial adjustment hole units arranged at intervals along the circumference of the work turntable on the work turntable, and each radial adjustment hole unit includes a plurality of adjustment holes distributed radially along the work turntable, 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 position along the radial direction of the working turntable. The installation structure for adjusting the radial position of the clamping arm on the working turntable includes a radial adjustment hole unit, and the radial adjustment hole unit includes a plurality of adjustment holes radially spaced along the working turntable.

The mounting seat of the clamping arm includes a seat body installed on the working turntable for adjusting the radial position of the working turntable, and the seat body is fixed with a mounting arm extending forward and backward, and the position of the clamping arm along the front and rear direction is Adjustable detachable couplings on corresponding mounting arms. The mounting seat of the clamping arm includes a seat body and a corresponding mounting arm, which facilitates the fixed installation of the clamping arm and the mounting seat of the clamping arm.

The base body is provided with a bolt installation hole corresponding to the adjustment hole for the corresponding radial adjustment hole unit, and the base body is detachably fixed on the working on the turntable.

The clamping arm has a fixed arm segment that is fastened to the mounting arm and a cantilever arm segment that hangs from the front side of the mounting arm. The width of the cantilever arm segment gradually decreases from the back to the front.

The clamping tool has two sets of the above-mentioned clamping arm units. One set of clamping arm units is an inner circle clamping unit. For a round clamping unit, the top pressure end of the support column of the foreign aid clamping unit is arranged outward.

The clamping arm is installed on the working turntable in an adjustable position along the front and rear directions.

Description of drawings

Fig. 1 is a schematic structural view of Embodiment 1 of the clamping tool for a thin-walled revolving body provided by the present invention;

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

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

Fig. 4 is a schematic structural view of the clamping arm in Fig. 1;

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

Fig. 6 is a schematic structural view of the base of the clamping arm in Fig. 1;

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

Fig. 8 is a sectional view of the base of the clamping arm shown in Fig. 7;

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

Fig. 10 is a schematic structural view of Embodiment 2 of the clamping tool for a thin-walled revolving body provided by the present invention.

detailed description

Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

Specific embodiment 1 of the thin-walled rotating body clamping tool provided by the present invention:

As shown in Figures 1 to 8, the clamping tooling in this embodiment specifically includes a working turntable 1 whose central axis of rotation extends along the front and rear directions. The clamp arm unit is specifically an outer circular clamping unit.

In this embodiment, the clamping arm unit specifically includes 8 clamping arms 22 extending along the front and rear directions and used for spaced distribution along the axial direction of the working turntable. The radial position of the disc is adjustable and installed on the front side of the working turntable 1. In fact, the working turntable 1 is provided with an installation structure that allows the mounting seat of the clamping arm to move and adjust along the radial direction of the working turntable. The installation structure includes the working The front side of the turntable is provided with radial adjustment units distributed along the circumference of the work turntable at intervals. Each radial adjustment unit includes a plurality of adjustment holes 10 extending radially along the work turntable. Each clamping arm mounting seat 21 Bolt installation holes corresponding to the adjustment holes of the corresponding radial adjustment hole units are respectively provided. After the clamping arm moves to the position, the clamping arm mounting seat is fixed at the corresponding position by using the fastening bolts inserted into the bolt installation holes. Can. When moving the position, loosen the fastening bolt, move the mounting seat of the clamping arm to the position, and then use the fastening bolt to fix the mounting seat of the clamping arm to realize the adjustment of the radial position of the working turntable.

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

As shown in Figures 4 and 5, correspondingly, the clamping arm 22 includes a fixed arm section 220 that is fastened and assembled with the above-mentioned installation arm and a cantilever arm section 221 that hangs from the front side of the installation arm. The width of the arm section 221 gradually decreases from the back to the 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 segment 220 of the clamping arm 22 to be detachably coupled to the mounting arm in an adjustable position along the front-rear direction. The axial length of the thin-walled rotary body to be supported and positioned adjusts the position of the clamping arm, improving the versatility of the entire clamping tool.

On the clamping arm 22, three support columns 4 are provided at intervals along the front and rear directions for pressing and supporting the corresponding thin-walled rotary bodies. The vibration-damping screws assembled on the corresponding clamping arms 22, correspondingly, a plurality of screw mounting holes 222 for mounting the vibration-damping screws are arranged at intervals along the front and rear directions on the clamping arms 22.

In fact, each support column on the clamping arm 22 has a press-fit end corresponding to the rotary positioning surface on the thin-walled rotary body. In fact, when in use, the support of the same adjustment arm unit The top pressure end of the column 4 will form a positioning cylinder corresponding to the rotary positioning surface on the corresponding thin-walled rotary body. When in use, the positioning cylinder with different radial dimensions can be obtained by moving the clamping arm radially along the working disk surface, corresponding to clamping thin-walled rotary bodies with different radial dimensions.

As shown in Fig. 9, the processing of the inner cavity is used as an example. At this time, the clamping unit shown in Fig. 1 is used to support and position the outer positioning revolving surface of the thin-walled revolving body. A suitable 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 working turntable 1 according to the radial dimension of the rotary positioning surface place. The vibration-damping screw on the clamping arm 22 realizes effective vibration-damping support for the thin-walled revolving body 200, thereby ensuring the clamping and positioning effect.

When it is necessary to clamp and position a thin-walled rotary body with other radial dimensions, directly pull out the clamping arm together with the mounting seat of the clamping arm from the working gripper, and then insert it into the adjustment hole at the corresponding position to realize quick assembly. dismantle.

In this embodiment, the pressing end of the supporting column of the clamping arm unit is arranged inwardly, which 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 pressing end of the supporting column is arranged outwards, 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 an embodiment 2 of a thin-walled revolving body clamping tool:

As shown in Figure 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 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 installed on the working turntable are different. The structures of the two sets of clamping arm units are the same as those of the clamping arm unit in Example 1. I won't repeat them here.

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

In the above two embodiments, a plurality of screw mounting holes extending along the front and rear directions are provided 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 rotary body to be processed, so as to achieve the purpose of rational utilization . In other embodiments, a plurality of damping screws can also be directly installed on the clamping arm, without disassembling and assembling.

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

Claims (10)

1. A kind of 1. thin-walled revolution workpiece clamping tooling, it is characterised in that：The work extended along the longitudinal direction including center of rotation axis Rotating disk（1）, in addition to it is used for the clamping arm unit being arranged on working rotary table, clamping arm unit prolongs along the longitudinal direction including multiple Stretch and be used for along the circumferentially spaced clamping arm of working rotary table（22）, each clamping arm（22）On be interval with along the longitudinal direction to Few two are used for and corresponding thin-walled revolution workpiece（200）The support column that coordinates of revolution locating surface top pressure（4）, each support column（4）Point There is not be used for the top pressure end for forming the corresponding positioning cylindrical surface that coincide with the revolution locating surface of the thin-walled revolution workpiece, work to turn Disk is provided with different radial dimension of described fixed to obtain for making each clamping arm radially to carry out position adjustment along work sabot The mounting structure of circle of position cylinder.
2. 2. thin-walled revolution workpiece clamping tooling according to claim 1, it is characterised in that：The support column（4）For vibration damping branch Dagger.
3. 3. thin-walled revolution workpiece clamping tooling according to claim 2, it is characterised in that：The vibration reduction support post is dismantled and assembled Fit over the vibration damping screw on corresponding clamping arm.
4. 4. thin-walled revolution workpiece clamping tooling according to claim 3, it is characterised in that：On the clamping arm along the longitudinal direction It is arranged at intervals with multiple screw mounting holes for installing the vibration damping screw（222）.
5. 5. thin-walled revolution workpiece clamping tooling as claimed in any of claims 1 to 4, it is characterised in that：The installation Structure includes multiple radial direction adjusting hole units along the circumferentially-spaced distribution of working rotary table that the working rotary table is provided with, each radial direction Adjusting hole unit includes the multiple adjusting holes being distributed along working rotary table spaced radial respectively（10）, each clamping arm（22）It is installed in phase The clamping arm mounting seat answered（21）On, the clamping arm mounting seat（21）It is arranged on accordingly along working rotary table radial position is adjustable At radial direction adjusting hole unit.
6. 6. thin-walled revolution workpiece clamping tooling according to claim 5, it is characterised in that：The clamping arm mounting seat includes using In the adjustable pedestal on working rotary table along working rotary table radial position（210）, it is installed with pedestal and extends in the longitudinal Installing arm（212）, the clamping arm（22）Position is adjustable along the longitudinal direction removable is connected in corresponding installing arm.
7. 7. thin-walled revolution workpiece clamping tooling according to claim 6, it is characterised in that：The pedestal（210）It is provided with and uses In the bolt mounting holes of insertion corresponding with the adjusting hole of corresponding radial direction adjusting hole unit（211）, the pedestal（210）By installing Fastening bolt in the bolt mounting holes it is removable be fixed on the working rotary table（1）On.
8. 8. thin-walled revolution workpiece clamping tooling according to claim 6, it is characterised in that：The clamping arm has and the peace Fill arm（212）The fixed arm section of corresponding fastening assembling（220）Be overhung at the installing arm（212）The cantilevered leg section of front side （221）, the width dimensions of cantilevered leg section taper into from the front to the back.
9. 9. thin-walled revolution workpiece clamping tooling as claimed in any of claims 1 to 4, it is characterised in that：Clamping tooling With the clamping arm unit two sets Suo Shu, a set of clamping arm unit is inner circle clamping unit, the support column of inner circle clamping unit Top pressure end arranges inwardly, and another set of clamping arm unit is cylindrical clamping unit, the top pressure end court of the support column of foreign aid's clamping unit Outer arrangement.
10. 10. thin-walled revolution workpiece clamping tooling as claimed in any of claims 1 to 4, it is characterised in that：The clamping Position is adjustable on the working rotary table along the longitudinal direction for arm.