CN117620741A

CN117620741A - Workpiece automatic alignment clamping platform

Info

Publication number: CN117620741A
Application number: CN202410059568.4A
Authority: CN
Inventors: 周文斌; 李会生; 吴小刚; 罗高峰; 田建东
Original assignee: Shaanxi Ruibosi Intelligent Equipment Co ltd
Current assignee: Shaanxi Ruibosi Intelligent Equipment Co ltd
Priority date: 2024-01-16
Filing date: 2024-01-16
Publication date: 2024-03-01

Abstract

The utility model provides a work piece automatic alignment presss from both sides tight platform belongs to automatic production line technical field. Including the swivel work head, swivel work head upper portion is connected with the zero point connecting plate, and the equipartition has zero point quick change on the zero point connecting plate upper surface, and zero point quick change upper portion is used for supporting sub-dish frock, and zero point connecting plate circumference equipartition is equipped with multiunit power drive unit in a week, and sub-dish frock circumference equipartition is equipped with the multiunit clamping slip table claw that corresponds with power drive unit in a week, and clamping slip table claw passes through drive mechanism and sub-dish frock to be connected with, and swivel work head's support one side fixedly connected with does not follow revolving stage pivoted precision detection mechanism. The rotary workbench drives the workpiece to rotate on the sub-disc tool, the displacement sensor contacts the workpiece, the motor controls each clamping sliding table claw to advance and retreat by grabbing point position data of the corresponding clamping sliding table claw, so that automatic alignment and automatic clamping of the workpiece are realized, and the automatic production requirement is met; the alignment precision data of the workpiece is not influenced by human intervention, and the alignment precision is high.

Description

Workpiece automatic alignment clamping platform

Technical Field

The invention belongs to the technical field of automatic production lines, and particularly relates to an automatic workpiece alignment and clamping platform.

Background

In the existing automatic production line, for example, parts are machined on a numerical control machine tool, a manual alignment workpiece is generally manually aligned on a rotary workbench, and a clamp is used for clamping the workpiece after manual alignment. The prior art has the following defects: 1. manual alignment is time-consuming and labor-consuming, alignment precision data is greatly affected by human intervention, and the alignment precision data is inaccurate; 2. the product has large rotation diameter, the reference standard is difficult to establish, and the manual operation difficulty is high; 3. the prior art can not realize automatic alignment and clamping of workpieces, and can not realize the requirement of automatic production; 4. the prior art can not realize the quick change function of the sub-disc tooling. For the reasons described above, improvements have therefore been proposed.

Disclosure of Invention

The invention solves the technical problems that: the invention provides an automatic workpiece alignment clamping platform, which aims to eliminate the interference influence of human factors on manual alignment precision data and obtain more accurate alignment data; the automatic alignment clamping solution is provided for automatic production of products, and the problem of difficult alignment of large-diameter workpieces is solved.

In order to achieve the above purpose, the invention adopts the technical scheme that:

the workpiece automatic alignment clamping platform comprises a rotary workbench, wherein a zero connecting plate is connected to the upper part of the rotary workbench, zero quick-change devices are uniformly distributed on the upper plane of the zero connecting plate, the upper part of the zero quick-change devices is used for supporting and connecting a sub-disc tool, and a blind rivet used for being combined with the zero quick-change devices is arranged on the sub-disc tool; a plurality of groups of power driving units are uniformly distributed on the circumference of the zero point connecting plate, a plurality of groups of clamping sliding table claws corresponding to the power driving units are uniformly distributed on the circumference of the sub-disc tool, the clamping sliding table claws are connected with the sub-disc tool through a transmission mechanism, and one side of a support of the rotary workbench is fixedly connected with a precision detection mechanism which does not rotate along with the turntable; when the sub-disc tool is combined with the rotary table through zero point quick change, each power driving unit outputs the input combination of the corresponding clamping sliding table claw and drives the clamping sliding table claw to move along the horizontal radial direction of the sub-disc tool through the transmission mechanism according to detection data of the precision detection mechanism.

The rotary workbench comprises a rotary support, wherein a rotary table is supported on the upper part of the rotary support through a rotary table bearing, a rotary table driving motor is fixedly arranged on the rotary support, and the rotary table driving motor drives the rotary table to rotate through a gear ring structure; the zero point connecting plate is arranged on the upper part of the rotary table and is fixedly connected with the rotary table.

Further, the power driving unit comprises a sliding frame, a jacking air cylinder, a driving motor, a speed reducer and a driving gear, wherein the jacking air cylinder is fixedly connected with a zero point connecting plate, the sliding frame is fixedly connected with the jacking air cylinder, the driving motor and the speed reducer are fixed on the sliding frame, the output of the driving motor is connected with the input of the speed reducer, and the driving gear is fixed at the output end of the speed reducer.

Further, the transmission mechanism of the clamping sliding table claw comprises a screw, two ends of the screw are supported at corresponding positions of the periphery of a sub disc of the sub disc tool through bearing blocks and bearings, the lower part of the clamping sliding table claw is screwed with the screw through nuts, a driven gear is fixed at the outer end of the screw, and the driving gear is meshed with or separated from the driven gear under the lifting action of a jacking cylinder; the screw rod adopts a triangular thread or a T-shaped thread.

Further, the precision detection mechanism comprises a stand column, the lower part of the stand column is fixedly connected with a rotary support, the upper part of the rotary support is connected with a Y-direction module unit capable of moving up and down, the upper part of the Y-direction module unit is in cross connection with an X-direction module unit, and the front end of the X-direction module unit is connected with a displacement sensor.

Further, the Y-direction module unit and the X-direction module unit are linear modules.

Compared with the prior art, the invention has the advantages that:

1. according to the scheme, a rotary workbench drives a workpiece to rotate on a sub-disc tool, a displacement sensor contacts the workpiece, the motor controls each clamping sliding table claw to advance and retreat by grabbing point position data corresponding to the clamping sliding table claw, so that automatic alignment and automatic clamping of the workpiece are realized, and the automatic production requirement is met; the alignment precision data of the workpiece is not influenced by human intervention, and the alignment precision is high;

2. according to the scheme, the sub-disc tooling for fixing the workpiece is connected with the rotary workbench through the zero point quick-change device, so that the workpiece sub-disc tooling has quick change, and automatic positioning, automatic locking and automatic unlocking functions are realized;

3. in the scheme, the driving gear of each driving motor on the rotary workbench and the corresponding driven gear on the sub-disc tooling of the workpiece move up and down through the jacking cylinder to realize the engagement and disengagement of the gears, so that the quick-change structure functions of the sub-disc tooling and the rotary workbench are just met;

4. according to the scheme, the transmission mode of each clamping slipway claw on the sub-disc tool adopts a triangular threaded screw or a T-shaped threaded screw for transmission, and the characteristic of the clamping slipway claw is that the clamping slipway claw has a self-locking function, so that the sub-disc tool has a large clamping slipway stroke and can be suitable for parts with various specifications;

5. according to the clamping sliding table claw of the neutron disc tool, the clamping sliding table claw is controlled by a servo motor, a servo moment mode is adopted, the output moment is controllable, and the workpiece is prevented from being damaged and deformed;

6. in this scheme rotary worktable belongs to one kind and adopts the frock form to realize the automatic alignment of work piece and tight mechanism of clamp under the online, and after the part alignment on the subdisc frock, can break away from fast and carry to equipment such as vertical digit control machine tool, longmen digit control machine tool, horizontal digit control machine tool and carry out automated production.

Drawings

FIG. 1 is a schematic diagram of a front view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic perspective view of the present invention;

fig. 4 is an enlarged schematic view of the structure of section i of fig. 3 according to the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

Referring to fig. 1-4, embodiments of the present invention are described in detail.

Examples: the automatic workpiece alignment clamping platform is shown in reference to fig. 1, and comprises a rotary workbench 1, a zero connecting plate 6 is connected to the upper portion of the rotary workbench 1, 4 zero quick-change devices 7 are uniformly distributed on the upper plane of the zero connecting plate 6, a sub-disc tool 8 is supported on the upper portion of the zero quick-change devices 7, and a blind rivet used for being combined with the zero quick-change devices 7 is arranged on the sub-disc tool 8, and can be automatically positioned in cooperation with the zero quick-change devices, and is automatically locked and automatically unlocked.

Four groups of power driving units 11 are uniformly distributed on the circumference of the zero point connecting plate 6, as shown in fig. 2, four groups of clamping sliding table claws 17 corresponding to the power driving units 11 are uniformly distributed on the circumference of the sub-disc tooling 8, the clamping sliding table claws 17 are connected with the sub-disc tooling 8 through a transmission mechanism, and one side of a support of the rotary table 1 is fixedly connected with a precision detection mechanism 20 which does not rotate along with a rotary table.

When the sub-disc tooling 8 is combined with the rotary table 1 by the zero point quick change 7, each power driving unit 11 outputs the input cooperation of the corresponding clamping sliding table claw 17, and the clamping sliding table claw 17 is driven to horizontally and radially move along the sub-disc tooling 8 through a transmission mechanism according to detection data of the precision detection mechanism 20.

In an embodiment, referring to fig. 1, the rotary table 1 includes a rotary support 2, a turntable 3 is supported on the upper portion of the rotary support 2 through a turntable bearing 4, a turntable driving motor 5 is fixedly installed on the rotary support 2, and the turntable driving motor 5 drives the turntable 3 to rotate through a gear ring structure; the zero connecting plate 6 is arranged on the upper part of the turntable 3 and is fixedly connected with the turntable 3.

In an embodiment, referring to fig. 3 and 4, the power driving unit 11 includes a sliding frame 12, a jacking cylinder 13, a driving motor 14, a speed reducer 15 and a driving gear 16, the jacking cylinder 13 is fixedly connected with the zero point connection plate 6, the sliding frame 12 is fixedly connected with the jacking cylinder 13, the sliding frame 12 is fixedly provided with the driving motor 14 and the speed reducer 15, the driving motor 14 is output and the speed reducer 15 is input and connected, and the output end of the speed reducer 15 is fixedly provided with the driving gear 16. The jacking cylinder 13 drags the sliding frame 12 to move up and down, so that the driving gear 16 and the driven gear can be meshed. The 4 power driving units are independently controlled, and 4 clamping slipway claws can move forwards and backwards. The 4 driving motors 14 adopt servo motors, the output torque is controllable, and the workpiece is prevented from being damaged and deformed.

In an embodiment, referring to fig. 1, the transmission mechanism of the clamping sliding table claw 17 includes a screw 18, two ends of the screw 18 are supported at corresponding positions around the sub-disc 9 of the sub-disc tooling 8 through bearing blocks and bearings, the lower part of the clamping sliding table claw 17 is screwed with the screw 18 through a nut, a driven gear 19 is fixed at the outer end of the screw 18, and the driving gear 16 is engaged with or disengaged from the driven gear 19 under the lifting action of the lifting cylinder 13.

Preferably, the screws 18 of the 4 clamping slipway claws 17 are driven by triangular threaded screws or T-shaped threaded screws, driven gears are arranged at the ends of the screws, and when the driving gears and the driven gears are meshed, the clamping slipway claws can move forwards and backwards. The clamping sliding table has the characteristics of self-locking function, so that the clamping sliding table stroke of the sub-disc tool is large, and the clamping sliding table can adapt to parts with various specifications.

In an embodiment, referring to fig. 1, the precision detecting mechanism 20 includes a column 21, the lower portion of the column 21 is fixedly connected with the rotating bracket 2, the upper portion of the rotating bracket 2 is connected with a Y-direction module unit 22 that can move up and down, the upper portion of the Y-direction module unit 22 is cross-connected with an X-direction module unit 23, and the front end of the X-direction module unit 23 is connected with a displacement sensor 24. The displacement sensor 24 is movable in the radial direction of the workpiece under adjustment of the Y-direction die set unit 22 and the X-direction die set unit 23.

According to the embodiment, a workpiece alignment principle on the sub-disc tooling adopts a displacement sensor, linear modules in the radial direction and the up-down direction are carried, the outer diameter of the workpiece is respectively subjected to runout detection, the detection data is fed back to the system, and the driving motor is controlled to realize automatic alignment.

Preferably, the Y-direction module unit 22 and the X-direction module unit 23 are linear modules.

Working principle: when the rotary table 1 and the sub-disc tooling 8 are combined by the zero point quick change 7, the jacking cylinder 13 pushes the driving gear 16 to be meshed with the driven gear 19, and the X-direction module unit 23 moves radially to push the displacement sensor 24 to be contacted with the surface of a workpiece. The turntable driving motor 5 drives the turntable 3 to rotate for one circle clockwise, the displacement sensor 24 records the highest point number value on the positions of the four clamping sliding table claws 17 respectively, and the 4 driving motors 14 drive the four clamping sliding table claws 17 to move the corresponding coordinate values respectively through calculation and comparison, so that the center position of the workpiece is displaced. The rotary table rotates for one circle in the reverse clock direction, and the above actions are repeated for a plurality of times, so that the workpiece can be automatically aligned. The jacking air cylinder 13 descends, alignment is finished, the zero point quick change 7 is automatically unlocked, and the sub-disc tooling 8 can be transferred to automatic processing equipment through the GRV stacker to realize automatic production.

The device realizes automatic alignment and automatic clamping of workpieces and meets the requirement of automatic production; and the alignment precision data of the workpiece is not influenced by human intervention, and the alignment precision is high.

In the using process, the device is connected with a control system for further optimization, wherein the related control system adopts a plurality of common program codes on the existing numerical control machine tool, and the program source codes are as follows:

it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. Work piece automatic alignment presss from both sides tight platform, its characterized in that: the automatic zero-point quick-change device comprises a rotary workbench (1), wherein a zero-point connecting plate (6) is connected to the upper part of the rotary workbench (1), zero-point quick-change devices (7) are uniformly distributed on the upper plane of the zero-point connecting plate (6), the upper part of each zero-point quick-change device (7) is used for supporting and connecting a sub-disc tool (8), and a blind rivet used for being combined with each zero-point quick-change device (7) is arranged on each sub-disc tool (8); a plurality of groups of power driving units (11) are uniformly distributed on the circumference of the zero point connecting plate (6), a plurality of groups of clamping sliding table claws (17) corresponding to the power driving units (11) are uniformly distributed on the circumference of the sub-disc tool (8), the clamping sliding table claws (17) are connected with the sub-disc tool (8) through a transmission mechanism, and one side of a support of the rotary workbench (1) is fixedly connected with a precision detection mechanism (20) which does not rotate along with the rotary table;

when the sub-disc tool (8) is combined with the rotary workbench (1) through zero point quick change (7), each power driving unit (11) outputs and is matched with the input of the corresponding clamping sliding table claw (17) and drives the clamping sliding table claw (17) to move horizontally and radially along the sub-disc tool (8) through a transmission mechanism according to detection data of the precision detection mechanism (20).

2. The workpiece self-aligning clamping platform of claim 1, wherein: the rotary workbench (1) comprises a rotary support (2), a rotary table (3) is supported on the upper portion of the rotary support (2) through a rotary table bearing (4), a rotary table driving motor (5) is fixedly installed on the rotary support (2), and the rotary table driving motor (5) drives the rotary table (3) to rotate through a gear ring structure; the zero point connecting plate (6) is arranged on the upper part of the rotary table (3) and is fixedly connected with the rotary table (3).

3. The workpiece self-aligning clamping platform of claim 2, wherein: the power driving unit (11) comprises a sliding frame (12), a jacking air cylinder (13), a driving motor (14), a speed reducer (15) and a driving gear (16), wherein the jacking air cylinder (13) is fixedly connected with a zero point connecting plate (6), the sliding frame (12) is fixedly connected with the jacking air cylinder (13), the driving motor (14) and the speed reducer (15) are fixed on the sliding frame (12), the driving motor (14) is output and the speed reducer (15) are connected in an input mode, and the driving gear (16) is fixed at the output end of the speed reducer (15).

4. The workpiece self-aligning clamping platform of claim 3, wherein: the transmission mechanism of the clamping sliding table claw (17) comprises a screw (18), two ends of the screw (18) are supported at corresponding positions on the periphery of a sub disc (9) of the sub disc tool (8) through bearing blocks and bearings, the lower part of the clamping sliding table claw (17) is screwed with the screw (18) through a nut, a driven gear (19) is fixed at the outer end of the screw (18), and the driving gear (16) is meshed with or separated from the driven gear (19) under the lifting action of the jacking cylinder (13); the screw (18) adopts a triangular thread or a T-shaped thread.

5. The workpiece self-aligning clamping platform of claim 2, wherein: the precision detection mechanism (20) comprises an upright post (21), the lower part of the upright post (21) is fixedly connected with a rotary support (2), the upper part of the rotary support (2) is connected with a Y-direction module unit (22) capable of moving up and down, the upper part of the Y-direction module unit (22) is connected with an X-direction module unit (23) in a cross shape, and the front end of the X-direction module unit (23) is connected with a displacement sensor (24).

6. The workpiece self-aligning clamping platform of claim 5, wherein: the Y-direction module unit (22) and the X-direction module unit (23) are linear modules.