Auxiliary clamp for rapid positioning spot welding of chopping roller
阅读说明：本技术 一种切碎滚筒快速定位点焊辅助夹具 (Auxiliary clamp for rapid positioning spot welding of chopping roller ) 是由 付文瑞 纪惠宝 张恒彬 于 2019-10-22 设计创作，主要内容包括：本发明涉及一种切碎滚筒快速定位点焊辅助夹具,包括底座,上端安装有两轴支座,一端轴支座内侧设有固定在切碎滚筒中心轴上的分度盘,分度盘上设有周向均布的多个分度位,分度盘与轴支座之间设有分度定位结构；包括分别与多组刀座焊接位置一一对应的多组刀座定位结构；刀座定位结构包括滑动座和推拉式快速夹钳,滑动座通过导向柱与导向套配合结构与底座连接,滑动座上靠近内侧上端设有刀座定位平台,其上靠近两端位置各安装有一伸缩式定位销,使刀座定位于滑动座上；推拉式快速夹钳的推杆端与滑动座外端固连；多组刀座定位结构上的刀座定位平台按照刀座沿轴向的设定错开角度呈依次高低错差式布置。本夹具提高了刀座分度准确、保证了刀座间距、提高了点焊生产效率。(The invention relates to a rapid positioning spot welding auxiliary fixture for a chopping drum, which comprises a base, wherein a two-shaft support is arranged at the upper end of the base, an indexing disc fixed on a central shaft of the chopping drum is arranged on the inner side of a shaft support at one end of the base, a plurality of indexing positions are uniformly distributed in the circumferential direction on the indexing disc, and an indexing positioning structure is arranged between the indexing disc and the shaft support; comprises a plurality of groups of tool apron positioning structures which are respectively in one-to-one correspondence with the welding positions of a plurality of groups of tool apron; the tool apron positioning structure comprises a sliding seat and a push-pull type quick clamp, the sliding seat is connected with the base through a guide post and guide sleeve matching structure, a tool apron positioning platform is arranged on the upper end of the sliding seat close to the inner side, and telescopic positioning pins are respectively arranged on the tool apron positioning platform close to the two ends of the tool apron positioning platform to position the tool apron on the sliding seat; the push rod end of the push-pull type quick clamp is fixedly connected with the outer end of the sliding seat; the tool apron positioning platforms on the tool apron positioning structures are arranged in a sequential high-low staggered mode according to the setting staggered angle of the tool apron along the axial direction. The fixture improves the accuracy of the indexing of the tool apron, ensures the distance between the tool apron and improves the production efficiency of spot welding.)
1. The utility model provides a quick location spot welding auxiliary fixture of shredding roll which characterized in that:
the cutting-up device comprises a base, wherein a shaft support is respectively arranged at the positions close to the two ends of the base and is respectively used for supporting the two ends of a central shaft of a cutting-up drum, an indexing disc coaxially fixed on the central shaft of the cutting-up drum is arranged at the inner side of the shaft support at one end, a plurality of indexing positions uniformly distributed along the circumference are arranged on the indexing disc, the number of the indexing positions is consistent with that of tool holders arranged along the circumference of the cutting-up drum, and an indexing positioning structure is arranged between the indexing disc and the corresponding shaft support;
the cutter holder positioning structures are arranged outside one side of the installation position of the central shaft of the chopping drum along the axial direction of the chopping drum, and the cutter holder positioning structures are respectively in one-to-one correspondence with the welding positions of the cutter holders on the central shaft; each group of tool apron positioning structures comprises a sliding seat and a push-pull type quick clamp, the sliding seat is connected with a base through a matching structure of a guide post and a guide sleeve, the moving direction of the sliding seat is perpendicular to the axial direction of a central shaft, the sliding seat and the push-pull type quick clamp are arranged inside and outside relative to the central shaft, a tool apron positioning platform is arranged at the upper end position, close to the inner side, of the sliding seat, telescopic positioning pins perpendicular to the tool apron positioning platform are respectively installed at positions, close to two ends, of the tool apron positioning platform, the two telescopic positioning pins are respectively aligned with two machined tool apron connecting holes, close to the two ends, of the tool apron, and the two telescopic positioning pins are inserted into the two tool apron connecting holes to position; the push rod end of the push-pull type quick clamp is fixedly connected with the outer end of the sliding seat;
the tool apron positioning platforms on the tool apron positioning structures are arranged in a sequential high-low staggered mode according to the setting staggered angle of the tool apron along the axial direction.
2. A chopping drum quick tack welding auxiliary clamp according to claim 1, characterized in that: the indexing positions are in indexing hole structures, the shaft support at the corresponding end is provided with a bolt hole, and a positioning pin is arranged in the bolt hole and one of the indexing holes to form the indexing positioning structure.
3. A chopping drum quick tack welding auxiliary clamp according to claim 1, characterized in that: the shaft support comprises an L-shaped bent plate, inclined supporting plates are connected between the vertical edge and the transverse edge of the L-shaped bent plate, a notch for extending out of the corresponding end part of the central shaft is formed in the middle of the upper end of the vertical edge, two rolling shafts are respectively installed on two sides of the notch, a supporting roller is respectively installed on the two rolling shafts and located on the inner sides of the vertical edge, and the end part of the central shaft is supported on the supporting rollers on the two sides.
Technical Field
The invention belongs to the technical field of corn harvesters, relates to the technical field of machining of a chopping drum for cutting corn stalks, and particularly relates to an auxiliary fixture for rapid positioning spot welding of the chopping drum.
Background
At present, the device that is used for cutting off maize stalk on ear of grain stem concurrently receives maize machine adopts the shredding roller structure, and the shredding roller structure comprises the center pin, the welding blade holder on the center pin and the cutter of fixing on the blade holder, and wherein, the blade holder is provided with the multiunit along the center pin axial, and every group blade holder comprises a plurality of blade holders that set up along the center pin circumferencial direction, installs a cutter on every blade holder. The cutters are sequentially arranged in a staggered mode at a certain angle along the axial direction of the central shaft.
This shredding roll structure is the complicated class part of staggered floor graduation welding, at present, with the blade holder one by one with center pin spot welding during the preparation, adopts this welding mode, has the not enough in several aspects below:
1. the spot welding time is long, the efficiency is low, and the production cost is high;
2. the indexing accuracy of the tool apron is low, and the requirement of balancing weight after dynamic balance is difficult to meet.
3. The position interval of the tool apron can not be ensured, and frequent repair in the assembly process is easily caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the chopping roller rapid positioning spot welding auxiliary clamp which has the advantages of improving the indexing accuracy of the cutter holder, ensuring the distance between the cutter holders, shortening the spot welding time and improving the spot welding production efficiency.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a quick location spot welding auxiliary fixture of shredding roll which characterized in that:
the cutting-up device comprises a base, wherein a shaft support is respectively arranged at the positions close to the two ends of the base and is respectively used for supporting the two ends of a central shaft of a cutting-up drum, an indexing disc coaxially fixed on the central shaft of the cutting-up drum is arranged at the inner side of the shaft support at one end, a plurality of indexing positions uniformly distributed along the circumference are arranged on the indexing disc, the number of the indexing positions is consistent with that of tool holders arranged along the circumference of the cutting-up drum, and an indexing positioning structure is arranged between the indexing disc and the corresponding shaft support;
the cutter holder positioning structures are arranged outside one side of the installation position of the central shaft of the chopping drum along the axial direction of the chopping drum, and the cutter holder positioning structures are respectively in one-to-one correspondence with the welding positions of the cutter holders on the central shaft; each group of tool apron positioning structures comprises a sliding seat and a push-pull type quick clamp, the sliding seat is connected with a base through a matching structure of a guide post and a guide sleeve, the moving direction of the sliding seat is perpendicular to the axial direction of a central shaft, the sliding seat and the push-pull type quick clamp are arranged inside and outside relative to the central shaft, a tool apron positioning platform is arranged at the upper end position, close to the inner side, of the sliding seat, telescopic positioning pins perpendicular to the tool apron positioning platform are respectively installed at positions, close to two ends, of the tool apron positioning platform, the two telescopic positioning pins are respectively aligned with two machined tool apron connecting holes, close to the two ends, of the tool apron, and the two telescopic positioning pins are inserted into the two tool apron connecting holes to position; the push rod end of the push-pull type quick clamp is fixedly connected with the outer end of the sliding seat;
the tool apron positioning platforms on the tool apron positioning structures are arranged in a sequential high-low staggered mode according to the setting staggered angle of the tool apron along the axial direction.
And the indexing positions adopt an indexing hole structure, the shaft support at the corresponding end is provided with a bolt hole, and a positioning pin is arranged in the bolt hole and one of the indexing holes to form the indexing positioning structure.
And the shaft support comprises an L-shaped bent plate, an inclined supporting plate is connected between the vertical edge and the transverse edge of the L-shaped bent plate, a notch for extending the corresponding end part of the central shaft is arranged in the middle of the upper end of the vertical edge, two sides of the notch are respectively provided with a roller, a supporting roller is arranged on the inner side of the vertical edge on the roller, and the end part of the central shaft is supported on the supporting rollers on the two sides.
The invention has the advantages and positive effects that:
1. this supplementary anchor clamps through add coaxial fixed connection's graduated disk in the one end of shredding roll center pin, when carrying out the spot welding operation of blade holder, through rotating the graduated disk, make the index bit of a week cooperate with graduation location structure respectively to blade holder graduation accuracy has been guaranteed, and then has guaranteed that the counter weight accords with the drawing requirement after the dynamic balance.
2. The auxiliary fixture is provided with a plurality of cutter holder positioning structures which are in one-to-one correspondence with the plurality of cutter holders, so that the plurality of cutter holders are positioned respectively, and the gaps among the cutter holders are ensured; after the tool apron is positioned, staggered layer spot welding of the tool apron can be realized, the spot welding time is shortened, and the spot welding production efficiency is improved.
3. The tool apron positioning structure is composed of a sliding seat, a guide post, a matching structure of a guide sleeve and a push-pull type quick clamp, and can realize quick propulsion of the tool apron, so that the tool apron can quickly and accurately advance to a positioning operation point attached to a central shaft, and the working efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic view of the slide block of FIG. 1;
fig. 4 is a schematic view of the sliding seat and the tool holder in fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments, which are illustrative only and not limiting, and the scope of the present invention is not limited thereby.
A chopping roller fast positioning spot welding auxiliary clamp is shown in figures 1-4, and the invention point is as follows:
the base is formed by welding a steel plate and U-shaped steel. The positions close to the two ends of the base are respectively provided with a shaft support 2 which is respectively used for supporting the two ends of a central shaft 3 of the chopping drum. The inner side of the shaft support at one end is provided with an indexing disc 5 coaxially fixed on the central shaft of the chopping drum, the indexing disc is provided with a plurality of indexing positions uniformly distributed along the circumference, the number of the indexing positions is consistent with that of the tool holders arranged along the circumference of the chopping drum, and an indexing positioning structure is arranged between the indexing disc and the corresponding shaft support, so that the central shaft can be accurately positioned when rotating one indexing position along with the indexing disc.
The device comprises a plurality of groups of cutter holder positioning structures, wherein the cutter holder positioning structures are arranged outside one side of a central shaft installation position of a chopping drum along the axial direction of the chopping drum, and the cutter holder positioning structures are in one-to-one correspondence with the cutter holder welding positions on the central shaft respectively. Each group of tool apron positioning structure comprises a sliding
The tool apron positioning platforms on the tool apron positioning structures are sequentially arranged in a staggered mode according to the axial setting of the tool apron. The cutter holder positioning platform on the multiple groups of cutter holder positioning structures processes corresponding angles and heights according to the height of the cutter holder of the shredding roller paper, and accurate positioning of the cutter holders and staggered layer group spot welding of the cutter holders are achieved.
In the structure, the indexing position further adopts an indexing hole 5-1 structure, a pin hole is arranged on the shaft support at the corresponding end, and a positioning pin 6 is arranged in the pin hole and one of the indexing holes to form the indexing positioning structure.
The index positions are not limited to the above-described index hole structure, and any index positions may be used as long as they can realize uniform indexing in the circumferential direction.
In the above configuration, the shaft support may further include:
the shaft support comprises an L-shaped bent plate 2-1, inclined supporting plates 2-4 are connected between the vertical edge and the transverse edge of the L-shaped bent plate, a notch 2-1-1 for the corresponding end part of the central shaft to extend out is formed in the middle of the upper end of the vertical edge, two sides of the notch are respectively provided with a roller 2-2, a supporting roller 2-3 is arranged on the inner side of the vertical edge on each roller, and the end part of the central shaft is supported on the supporting rollers on the two sides. This shaft support simple structure is convenient for support the both ends of center pin on the shaft support, in addition, when the blade holder welding completion back, also is convenient for take off the crushing roller from anchor clamps.
This supplementary anchor clamps of quick location spot welding of shredding roll instruction for use:
firstly, fixedly installing an index plate on a position, close to one end, of a central shaft of a chopping drum, and then supporting the central shaft of the chopping drum on shaft supports at two ends, so that one end, which is not provided with the index plate, of the central shaft extends out of a corresponding end shaft support, and the central shaft is conveniently rotated to adjust the position of the central shaft; then adjusting the central shaft to align an indexing position on the indexing disc with the indexing positioning structure, and positioning the indexing disc through the indexing positioning structure; pulling a plurality of spanners of the push-pull type rapid clamp outwards to pull the plurality of sliding seats to an initial position, mounting a plurality of tool apron on tool apron positioning platforms on the plurality of sliding seats one by one at the initial position, and inserting telescopic positioning pins for positioning; when the tool holders are all positioned, the wrenches of the push-pull type quick clamps are pushed inwards to enable the inner arc surfaces of the tool holders to be attached to the surface of the central shaft; then, connecting the plurality of tool holders and the central shaft by one-time spot welding; after a plurality of blade holders and center pin welding, take out the telescopic locating pin of connecting the blade holder and corresponding blade holder locating platform, the spanner of a plurality of plug-type active grab of back-pulling makes blade holder and sliding seat break away from, after the sliding seat returns to initial position, accomplish blade holder staggered floor spot welding in groups once, then loosen graduation location structure, release graduated disk, after a graduation of center pin of rotation fixes a position again, can be according to above-mentioned operation process, carry out the second time blade holder staggered floor spot welding in groups, until the complete blade holder of spot welding.
This supplementary anchor clamps of quick location spot welding of shredding drum passes through graduated disk and multiunit blade holder location structure's cooperation, has realized the staggered floor of blade holder and has welded spot in groups, compares in current blade holder a slice fixed-position welding's mode, has guaranteed that the blade holder graduation is accurate, has guaranteed the blade holder interval, has shortened spot welding time, has improved spot welding production efficiency.
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the disclosure of the embodiments and the accompanying drawings.
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