CN221210725U

CN221210725U - Self-centering locking structure and drilling, punching and tapping integrated machine

Info

Publication number: CN221210725U
Application number: CN202322983256.6U
Authority: CN
Inventors: 汪国林
Original assignee: Foshan Dongsheng Machinery Manufacturing Co ltd
Current assignee: Foshan Dongsheng Machinery Manufacturing Co ltd
Priority date: 2023-11-03
Filing date: 2023-11-03
Publication date: 2024-06-25
Anticipated expiration: 2033-11-03

Abstract

The utility model discloses a self-centering locking structure which comprises a centering mechanism, a locking mechanism and an indexing mechanism; the centering mechanism comprises a plurality of centering pieces and a transmission assembly, wherein the centering pieces are circumferentially distributed by taking the axis of the locking mechanism as the center of a circle, and the output end of the transmission assembly is in transmission connection with the centering pieces so as to drive the centering pieces to be close to or far away from the axis of the locking mechanism; the output end of the locking mechanism is used for locking the round blank, and the output end of the indexing mechanism is in transmission connection with the locking mechanism so as to drive the locking mechanism and the round blank to rotate and index around the axis of the locking mechanism. The utility model also discloses a drilling, punching and tapping integrated machine, which comprises a drilling mechanism, a notching mechanism, a tapping mechanism and a self-centering locking structure. The utility model can solve the problems that the centering of the round blank is difficult and the centering and the rotation indexing are difficult to realize simultaneously in the prior art.

Description

Self-centering locking structure and drilling, punching and tapping integrated machine

Technical Field

The utility model belongs to the technical field of flange processing equipment, and particularly relates to a self-centering locking structure and a drilling and punching integrated machine.

Background

At present, when a flange ring type circular blank is processed, the circular blank needs to be fixed, and then the fixed circular blank is processed such as drilling, punching or tapping. However, before the round blank is fixed on the processing equipment, the round blank is generally required to be centered so as to enable the circle center of the round blank to be aligned up and down with the circle center of the fixing device, and the processing equipment is ensured to process around the circle center of the round blank.

The common centering structure is realized by means of positioning, locking and fixing through internal or external pressing of round blanks. However, the centering structure of the inner sheet is fixed by the inner circumference of the Zhang Yuanxing blank in the claw, but the centering cannot be realized by the inner Zhou Feibiao standard circle of the circular blank, so that a plurality of screw holes machined are eccentrically arranged with the outer circumference of the circular blank, and the yield is low.

The external pressure mode is that after the claw clamps the round blank, the driving structure drives the claw and the round blank to rotate and index, so that centering and fixing of the round blank are realized, but the centering structure of the rotating and indexing is easy to block with a lower die of the notching mechanism or other processing equipment, so that the flange cannot rotate in an indexing way, and flange processing is difficult to realize.

Disclosure of utility model

The utility model aims to provide a self-centering locking structure and a drilling and punching integrated machine, which are used for solving the problems that in the prior art, a round blank is difficult to center and centering and rotation indexing are difficult to realize simultaneously.

The technical scheme adopted for solving the technical problems is as follows:

the utility model discloses a self-centering locking structure which comprises a centering mechanism, a locking mechanism and an indexing mechanism, wherein the locking mechanism is arranged on the centering mechanism;

The centering mechanism comprises a centering piece and a transmission assembly, wherein the centering piece is provided with a plurality of centering pieces, the centering pieces are circumferentially distributed by taking the axis of the locking mechanism as the circle center, the output end of the transmission assembly is in transmission connection with the centering piece so as to drive the centering piece to be close to or far away from the axis of the locking mechanism, and the centering mechanism is configured to: when the centering piece is close to the axis of the locking mechanism, the centering piece is abutted against the round blank, so that the circle center of the round blank passes through the axis of the locking mechanism;

The output end of the locking mechanism is used for locking the round blank, and the output end of the indexing mechanism is in transmission connection with the locking mechanism so as to drive the locking mechanism and the locked round blank to rotate and index around the axis of the locking mechanism.

The utility model has at least the following beneficial effects: the output end of the transmission assembly is in transmission connection with the centering pieces so as to drive the centering pieces to move towards the axis close to the locking mechanism, and because the centering pieces are circumferentially distributed, the moving centering pieces are abutted against the round blank to center the round blank with the output end of the locking mechanism, after centering, the locking mechanism is started, the output end of the locking mechanism locks the round blank so that the round blank always keeps a state of being mutually centered with the output end of the locking mechanism, and when the output end of the indexing mechanism drives the locking mechanism and the round blank locked by the locking mechanism to rotate and index, the round blank is still in a centering state, and processing equipment is convenient for drilling and the like on the round blank.

After the output end of the locking mechanism locks the round blank, the round blank is always in a centering state, the output end of the transmission assembly can be closed or drive the centering piece to move along the opposite direction, so that the centering piece moves in the direction away from the output end of the locking mechanism, at the moment, the distance between the centering piece and the round blank is set, the centering mechanism does not influence the rotary indexing of the round blank, and the indexing mechanism only drives the locking mechanism and the round blank to rotate and index.

As a further improvement of the above technical solution, the transmission assembly includes a fixing plate and a transmission driving member, the centering member is slidably connected to the fixing plate along a direction toward the axis of the locking mechanism, and an output end of the transmission driving member is connected to the centering member, so that the centering member and the fixing plate are relatively slidably moved.

Through above-mentioned setting, the centering piece slides along the axis direction towards locking mechanism with the fixed plate and is connected, when the output drive centering piece of transmission driver, carries out the guide action to the centering piece, prevents that the centering piece from taking place the skew, as the further improvement of above-mentioned technical scheme, drive assembly still including link and fly leaf, every the centering piece all is connected with one the link, a plurality of the link all passes the fixed plate is connected the fly leaf, transmission driver is connected in the fly leaf, the vertical extension of output of transmission driver is connected the fixed plate, drive assembly is configured as: when the transmission driving piece is started, the movable plate and the fixed plate relatively move along the up-down direction, and the movable plate can simultaneously drive a plurality of linkage pieces to move so as to enable a plurality of centering pieces to be close to or far away from the axis of the locking mechanism.

Through the arrangement, a plurality of centering pieces are connected with the movable plate through the linkage piece, the transmission driving piece is connected with the movable plate, the output end of the transmission driving piece is connected with the fixed plate, and because the transmission driving piece vertically extends, when the transmission driving piece is started, the movable plate and the fixed plate can relatively move along the up-down direction, and because the centering pieces slide and are connected with the fixed plate, the linkage piece is connected with the centering pieces and the movable plate, therefore, when the movable plate and the fixed plate relatively move, the plurality of linkage pieces can respectively drive the connected centering pieces to move in the axial direction close to or far away from the locking mechanism, so that one transmission driving piece is used for driving all the centering pieces to move, the centering of the round blank is more accurate, and the setting cost of the self-centering locking structure is saved.

As a further improvement of the technical scheme, the linkage piece is one of a diagonal rod, a diagonal block and a connecting rod.

Through the arrangement, the structure of the inclined rod and the inclined block is simple, but the precision required by the matching of the inclined rod and the inclined block with the movable plate is higher; the structure of the connecting rod is complex, but the installation steps of the connecting rod and the movable plate are simple.

As a further improvement of the technical scheme, the centering pieces are provided with three centering pieces and are uniformly paved circumferentially.

Through the arrangement, the three-point centering theorem is that three points which are not in the same straight line can quickly determine the position of a circle, so that the three centering pieces arranged on the circumference can accurately and quickly realize centering of a round blank.

As a further improvement of the above technical solution, the locking mechanism includes:

The upper surface of the limiting chassis is used for supporting the round blank, and the output end of the locking mechanism penetrates through the limiting chassis;

The first retaining member, first retaining member is located spacing chassis's top, locking mechanism's output with first retaining member connects, first retaining member is configured to: the round blank can pass through the first locking piece and is arranged on the limiting chassis;

The second retaining member, the second retaining member is equipped with the joint groove, the joint groove switches on from top to bottom and extends and switch on the border of second retaining member, locking mechanism's output can go into and go out the joint groove, the second retaining member is configured as: the first locking piece is arranged on the round blank and can move to the position between the first locking piece and the limiting chassis;

The output end of the locking mechanism is the output end of the locking driving piece, the output end of the locking driving piece vertically extends, the upper end of the locking driving piece is connected with the first locking piece, and the locking driving piece is configured to: when the locking driving piece is started, the output end of the locking driving piece drives the first locking piece to move towards the direction close to the limiting chassis, and the first locking piece presses down the second locking piece, so that the round blank is locked between the limiting chassis and the second locking piece.

Through above-mentioned setting, the output of locking driving piece drives first retaining member and moves down, makes first retaining member compress tightly the second retaining member towards the direction that is close to spacing chassis, because circular blank sets up between spacing chassis and second retaining member, consequently, the upper surface and the lower surface of circular blank are tightly fixed by second retaining member and spacing chassis clamp respectively, realize the locking of circular blank.

As a further improvement of the technical scheme, the first locking piece is cylindrical, and the diameter of the first locking piece is larger than the groove width of the clamping groove.

Through the arrangement, when the locking driving piece drives the first locking piece to move downwards, the first locking piece can compress the second locking piece, and the first locking piece is prevented from penetrating through the clamping groove of the second locking piece and the round blank to be directly abutted against the limiting chassis, so that the round blank cannot be locked by the locking mechanism.

As a further improvement of the above technical solution, the upper surface of the limiting chassis is provided with a limiting groove along the edge thereof, the limiting groove is stepped, and the limiting groove is configured as: the round blank is embedded in the limit groove and is in clearance fit with the limit groove.

Through the arrangement, the limiting groove is used for preliminarily limiting the round blank to be placed at the position of the limiting chassis, so that the round blank is prevented from deviating from the axis of the locking mechanism too much, and the centering mechanism can center the round blank faster.

As a further improvement of the above technical solution, the fixing plate is connected with a placing table configured to: the upper surface of the stacking table is leveled with the upper surface of the circular blank embedded in the limiting groove, so that the second locking piece can translate between the first locking piece and the circular blank.

Through above-mentioned setting, put the platform and provide the space of placing for the second retaining member, people need not to hold the second retaining member always when getting and putting circular blank to, the second retaining member can direct horizontal migration to put on the platform or the circular blank, need not people to mention or put down, makes the putting of second retaining member more laborsaving.

The utility model also discloses a drilling, punching and tapping integrated machine, which comprises a drilling mechanism, a notching mechanism, a tapping mechanism and the self-centering locking structure, wherein the drilling mechanism, the notching mechanism and the tapping mechanism are circumferentially arranged by taking the axis of the locking mechanism as the circle center.

The utility model has at least the following beneficial effects: because the drilling mechanism, the notching mechanism and the tapping mechanism are circumferentially arranged by taking the axis of the locking mechanism as the circle center, after the self-centering locking mechanism locks the round blank in a centering manner, the indexing mechanism drives the round blank to rotate and index, and the drilling mechanism, the notching mechanism and the tapping mechanism can sequentially or simultaneously process the round blank so as to enable the round blank to be processed with screw holes which are circumferentially arranged and concentric with the round blank.

Drawings

The utility model is further described below with reference to the drawings and examples;

FIG. 1 is a schematic view of the overall structure of a self-centering locking structure provided by an embodiment of the present utility model;

FIG. 2 is a front view of a self-centering locking mechanism according to an embodiment of the present utility model in a locked state;

FIG. 3 is a cross-sectional view at A-A of FIG. 2;

fig. 4 is a schematic diagram of an overall structure of a drilling and tapping integrated machine according to an embodiment of the present utility model.

The figures are marked as follows:

100. A self-centering locking structure;

200. A centering mechanism; 210. a centering member; 220. a transmission driving member; 230. a fixing plate; 240. a linkage member; 250. a movable plate; 251. a connecting block; 260. a slide;

300. A locking mechanism; 310. a limiting chassis; 311. a limit groove; 320. a first locking member; 330. a second locking member; 331. a clamping groove; 332. a handle; 340. a locking driving member;

400. an indexing mechanism; 410. an indexing motor; 420. a coupling; 430. a worm wheel; 440. a worm;

500. A work table; 510. a setting table; 521. a guide shaft; 522. a guide sleeve;

600. Drilling, punching and tapping integrated machine; 610. a base;

710. A drilling mechanism; 720. a notching mechanism; 730. tapping mechanism; 740. a control assembly;

800. round blank.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, if there is a word description such as "a plurality" or the like, the meaning of the plurality is one or more, the meaning of the plurality is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and above, below, within, etc. are understood to include the present number. The description of first, second, and third is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

It should be noted that, in the drawing, the X direction is from the rear side to the front side of the self-centering locking structure; the Y direction is from the left side to the right side of the self-centering locking structure; the Z direction is directed from the underside of the self-centering locking structure to the upper side.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 to 4, the self-centering locking structure and the drilling and tapping integrated machine of the present utility model are described below in several embodiments.

As shown in fig. 1 to 4, the self-centering locking structure 100 of the embodiment of the present utility model includes a centering mechanism 200, a locking mechanism 300, and an indexing mechanism 400.

In this embodiment, the centering mechanism 200 includes a plurality of centering members 210 and a transmission assembly, wherein the plurality of centering members 210 are disposed at the same radius with respect to the axis of the locking mechanism 300, so that the plurality of centering members 210 are circumferentially distributed. The output end of the transmission assembly is in transmission connection with the centering piece 210 to drive the centering piece 210 to be close to or far away from the axis of the locking mechanism 300.

It will be appreciated that when the plurality of centering members 210 are positioned closer to one another about the axis of the locking mechanism 300, the plurality of centering members 210 abut the outer periphery of the circular blank 800, thereby causing the center of the circular blank 800 to cross the axis of the locking mechanism 300, ensuring that the circular blank 800 is centered with the locking mechanism 300.

It will be appreciated that when the plurality of centering members 210 are spaced apart from each other about the axis of the locking mechanism 300, the circular blank 800 and the plurality of centering members 210 are spaced apart, and the circular blank 800 and the centering members 210 are movable relative to each other to avoid collision and wear between the circular blank 800 and the centering members 210.

In the present embodiment, after the centering mechanism 200 centers the circular blank 800, the locking mechanism 300 is activated to lock the circular blank 800 so that the circular blank 800 and the locking mechanism 300 are always in a mutually centered state.

It will be appreciated that after the locking mechanism 300 locks the circular blank 800, the centering mechanism 200 is closed or moved in the opposite direction such that the output of the drive assembly moves the centering member 210 away from the axis of the locking mechanism 300.

It can be understood that the indexing mechanism 400 is started, the output end of the indexing mechanism 400 is in transmission connection with the locking mechanism 300, the indexing mechanism 400 drives the locking mechanism 300 to perform rotary indexing around the axis of the locking mechanism 300, and the axis of the locking mechanism 300 and the axis of the circular blank 800 are coaxially arranged because the locking mechanism 300 locks and fixes the circular blank 800 and the two are arranged in a centering mode at the moment, so that the indexing mechanism 400 also drives the circular blank 800 to perform rotary indexing around the axis of the locking mechanism 300.

In this embodiment, the transmission assembly includes a fixing plate 230 and a transmission driving member 220, a plurality of centering members 210 are circumferentially disposed on the upper surface of the fixing plate 230, the centering members 210 are slidably connected with the fixing plate 230, the sliding direction of the centering members 210 is a direction close to or far away from the axis of the locking mechanism 300, the output end of the transmission driving member 220 is an output end of the transmission assembly, and the output end of the transmission driving member 220 is connected with the centering members 210 to drive the centering members 210 to slide on the fixing plate 230, and when the centering members 210 slide in the direction close to the axis of the locking mechanism 300, the axis of the locking mechanism 300 and the circular blank 800 can be centered, as shown in fig. 1 to 3.

It will be appreciated that, as shown in fig. 1, the upper surface of the fixing plate 230 is fixedly connected with a sliding seat 260, the number of the sliding seats 260 is matched with that of the centering members 210, the sliding seat 260 is slidingly connected with the centering members 210 along a direction approaching or separating from the axis of the locking mechanism 300, and the sliding seat 260 is used for guiding the relative sliding movement of the centering members 210 and the fixing plate 230, so as to avoid the offset of the centering members 210.

In some embodiments, the number of transmission driving members 220 matches the number of centering members 210, and the output end of each transmission driving member 220 is connected to each centering member 210, and each transmission driving member 220 drives each centering member 210 to slide, and the output end of the transmission driving member 220 extends toward the axis of the locking mechanism 300.

Further, the plurality of transmission driving members 220 may be connected to the same driving source, such as a motor, an air pump, etc., and when the driving source is started, the plurality of transmission driving members 220 are simultaneously started, so as to simultaneously drive the plurality of centering members 210 to slide relative to the fixing plate 230, thereby centering the circular blank 800.

In this embodiment, the transmission assembly further includes a linkage member 240 and a movable plate 250, as shown in fig. 1 to 3, the number of linkage members 240 is equal to the number of centering members 210, one end of each linkage member 240 is connected to each centering member 210, the other end of each linkage member 240 passes through the fixed plate 230 downwards and is connected to the movable plate 250 located below, the transmission driving member 220 is connected to the movable plate 250, the output end of the transmission driving member 220 extends vertically in the up-down direction, and the output end of the transmission driving member 220 is connected to the fixed plate 230.

It can be appreciated that when the transmission driving member 220 is started, the output end of the transmission driving member 220 moves to enable the fixed plate 230 and the movable plate 250 to relatively move in the up-down direction, the distance between the fixed plate 230 and the movable plate 250 in the up-down direction is increased or decreased, and because the linkage members 240 are respectively connected with the centering member 210 and the movable plate 250, when the movable plate 250 and the fixed plate 230 relatively move, the movable plate 250 pulls the plurality of linkage members 240, so that each linkage member 240 drives the connected centering member 210 to slide relative to the sliding seat 260, thereby realizing that the plurality of centering members 210 are simultaneously close to the centering member or far from the loose circular blank 800.

In other embodiments, the transmission driving member 220 may be connected to the fixed plate 230, and the output end of the transmission driving member 220 may be connected to the movable plate 250, which may still enable the fixed plate 230 and the movable plate 250 to slide relatively in the up-down direction, and the transmission driving member 220 may be flexibly arranged according to the positions and spaces of the fixed plate 230 and the movable plate 250.

It is understood that the transmission driving member 220 may be a cylinder, an electric cylinder, an oil cylinder, a screw motor, a linear module, or the like. In this embodiment, the transmission driving member 220 is a cylinder.

Further, a guide shaft 521 extending up and down is connected to the lower end of the fixed plate 230, a guide sleeve 522 matching with the guide shaft 521 is connected to the movable plate 250, the guide shaft 521 is inserted into the guide sleeve 522, and the guide shaft 521 and the guide sleeve 522 guide the relative movement of the movable plate 250 and the fixed plate 230 in the up and down direction to prevent the movable plate 250 from being deviated, as shown in fig. 1.

It can be understood that the self-centering locking structure 100 further includes a workbench 500, the centering mechanism 200, the locking mechanism 300 and the indexing mechanism 400 are all laid on the workbench 500, and the lower end of the guide shaft 521 is fixedly mounted on the workbench 500.

In this embodiment, the linkage 240 may be a diagonal rod or a diagonal block, as shown in fig. 1-3. Taking the diagonal rod as an example, the upper end of the diagonal rod is fixedly connected with the positioning piece in the direction close to the axis of the locking mechanism 300, the lower end of the diagonal rod is movably connected with the movable plate 250 in the direction away from the axis of the locking mechanism 300, the movable plate 250 is fixedly connected with the connecting block 251, and the connecting block 251 is provided with a diagonal hole for the diagonal rod to slide and penetrate.

It can be appreciated that when the movable plate 250 moves downward relative to the fixed plate 230, the inclined hole moves downward, and the inclined hole forces the inclined rod passing through the inclined hole to move in the axial direction close to the locking mechanism 300, so as to center the circular blank 800; when the movable plate 250 moves upward relative to the fixed plate 230, the inclined hole moves upward, and the inclined hole forces the inclined rod inserted therein to move away from the axial direction of the locking mechanism 300, thereby releasing the circular blank 800.

In other embodiments, the linkage 240 is a link. Specifically, the connecting rod includes a first connecting rod and a second connecting rod, which are hinged to each other, wherein one end of the first connecting rod is hinged to the centering member 210, and one end of the second connecting rod is hinged to the movable plate 250.

When the transmission driving member 220 is started, the movable plate 250, which is lifted relative to the fixed plate 230, drives the second connecting rod to move, the second connecting rod pulls the first connecting rod, and the first connecting rod pulls the centering member 210, so that the centering member 210 and the fixed plate 230 slide relatively.

In some embodiments, the centering member 210 may be provided with two, four, etc. When two centering pieces 210 are provided, the two centering pieces 210 are symmetrically distributed, but the circular blank 800 may deviate toward the symmetry axis direction of the two centering pieces 210, so that the circular blank 800 cannot be accurately centered; when the centering pieces 210 are provided with four, the laying cost of the centering pieces 210 increases, resulting in an increase in the manufacturing cost of the self-centering locking structure 100.

In the present embodiment, three centering members 210 are provided, and the three centering members 210 are uniformly distributed circumferentially, and the round blank 800 can be accurately centered by the three centering members 210 due to the three-point centering theorem.

It can be understood that the circular blank 800 is annular, and the circular blank 800 is provided with a first through hole which is vertically communicated.

In this embodiment, the locking mechanism 300 is rotatably mounted on the workbench 500 through a bearing on its own axis, and the locking mechanism 300 includes a limiting chassis 310, a first locking member 320, a second locking member 330 and a locking driving member 340, as shown in fig. 1 to 3.

It will be appreciated that the spacing chassis 310 is configured to provide support for the circular blank 800, the diameter of the spacing chassis 310 is greater than the diameter of the first through hole of the circular blank 800, and the circular blank 800 is disposed on the upper surface of the spacing chassis 310. The circle center of the limiting chassis 310 is provided with a second through hole which is communicated up and down, and the output end of the locking mechanism 300 passes through the second through hole.

It will be appreciated that the first locking member 320 is disposed above the limiting base plate 310, and the output end of the locking mechanism 300 extends upward and is connected to the first locking member 320, and the horizontal cross-section of the first locking member 320 is smaller than the first through hole of the circular blank 800, so that the circular blank 800 can sequentially pass through the first locking member 320 and the output end of the locking mechanism 300 and be placed on the limiting base plate 310.

It can be understood that the second locking member 330 is provided with a clamping groove 331, the clamping groove 331 is vertically conducted and extends to conduct the edge of the second locking member 330, and the second locking member 330 can relatively move with the output end of the locking mechanism 300, so that the output end of the locking mechanism 300 can be penetrated into the clamping groove 331 through the notch.

When the circular blank 800 is placed on the limiting chassis 310, the second locking member 330 can move to the upper side of the circular blank 800, at this time, the lower surface of the second locking member 330 is abutted against the upper surface of the circular blank 800 under the action of gravity, the second locking member 330 is located between the first locking member 320 and the circular blank 800, and the output end of the locking mechanism 300 is arranged in the clamping groove 331 in a penetrating manner.

It can be understood that the output end of the locking driving member 340 is the output end of the locking mechanism 300, the output end of the locking driving member 340 extends in the up-down direction, and the upper end of the locking driving member 340 is connected with the first locking member 320, when the locking driving member 340 is started, the output end of the locking driving member 340 moves in the up-down direction and drives the first locking member 320 to move up-down.

It can be appreciated that when the output end of the locking driving member 340 drives the first locking member 320 to move towards the direction approaching the limiting base plate 310, that is, the first locking member 320 moves downward and presses the second locking member 330, so that the second locking member 330 presses the round blank 800 downward against the limiting base plate 310 under the pressure, and the round blank 800 is locked between the second locking member 330 and the limiting base plate 310, thereby locking the round blank 800, as shown in fig. 2 and 3.

It will be appreciated that after the round blank 800 is processed, the output end of the locking driving member 340 may drive the second locking member 330 to move away from the limiting chassis 310, i.e. the first locking member 320 moves upwards, so that a person may remove the second locking member 330 through the clamping groove 331 and take out the processed round blank 800, as shown in fig. 1 and 4.

It is understood that the locking driving member 340 may be a cylinder, an electric cylinder, an oil cylinder, a screw motor, a linear module, or the like. In this embodiment, the locking actuator 340 is an electric cylinder.

It will be appreciated that the locking mechanism 300 is further provided with a pressure sensor, which may be disposed on the lower surface of the first locking member 320 or the upper surface of the limiting chassis 310, where the pressure sensor is configured to detect the output force of the output end of the locking driving member 340, and may set the locking pressure of the circular blank 800, and when the pressure sensor detects that the locking pressure of the circular blank 800 reaches the set pressure, one may close the locking driving member 340, so that the circular blank 800 is always in a constant locked and centered state.

In this embodiment, the first locking member 320 is cylindrical, the diameter of the first locking member 320 is larger than the slot width of the clamping slot 331, so that the situation that the first locking member 320 moves downward directly passes through the clamping slot 331 and the first through hole of the circular blank 800, and the first locking member 320 directly abuts against the upper surface of the limiting chassis 310, and cannot lock the circular blank 800 is avoided.

Further, the limiting chassis 310 is provided with a limiting groove 311, as shown in fig. 3, the limiting groove 311 is concavely arranged inwards along the edge of the limiting chassis 310, and is communicated with the upper surface of the limiting chassis 310, the limiting groove 311 is stepped, and the lower end of the round blank 800 is embedded into the limiting groove 311. The limiting groove 311 comprises a limiting bottom surface and a limiting side surface, the limiting bottom surface is used for supporting the circular blank 800, the limiting side surface is used for primarily limiting the placing position of the circular blank 800, and the situation that the circle center of the circular blank 800 deviates from the axis of the locking mechanism 300 too much, so that the centering mechanism 200 is difficult to center the circular blank 800, or the circular blank 800 falls off from the limiting chassis 310 easily is prevented.

It can be appreciated that the size and shape of the first through hole is larger than the size and shape of the limit side surface formed by surrounding, so that the circular blank 800 is in clearance fit with the limit groove 311, and the centering mechanism 200 is convenient for centering the circular blank 800 defined in the preliminary step; the shape and area of the first through hole of the circular blank 800 are smaller than the cross-sectional shape and area of the limiting base plate 310, so that the annular circular blank 800 is prevented from passing through the limiting base plate 310 from top to bottom.

It can be appreciated that when the circular blank 800 is fitted in the limiting groove 311, the three centering members 210 are circumferentially disposed around the circular blank 800, and the centering members 210 and the circular blank 800 have overlapping portions in the horizontal direction, so as to ensure that the centering members 210 can abut against the centering circular blank 800.

It will be appreciated that the fixing plate 230 is connected to the stacking table 510 for placing the second locking member 330, and as shown in fig. 1, 2 and 4, when the circular blank 800 is in the picking state, the second locking member 330 can be placed on the stacking table 510 without having to hold the second locking member 330 by a person. The upper surface of the stacking table 510 and the upper surface of the circular blank 800 embedded in the limiting groove 311 are positioned on the same horizontal plane, so that people can directly and horizontally pull the second locking piece 330, the second locking piece 330 can horizontally move, and the lifting or the lowering is not required, so that the lifting and lowering of the circular blank is more convenient and labor-saving.

It will be appreciated that the second locking member 330 is provided with a handle 332 to facilitate translation of the second locking member 330, as shown in fig. 1-4.

It can be appreciated that the locking mechanism 300 is threaded through the fixed plate 230 and the movable plate 250, so as to prevent impurities such as dust and debris from entering the self-centering locking mechanism 100 along the gap between the locking mechanism 300 and the fixed plate 230 during the processing process, the fixed plate 230 is provided with a dust-proof sealing ring, and the dust-proof sealing ring abuts against the locking mechanism 300, so that the relative rotation of the locking mechanism 300 and the fixed plate 230 is not affected, and dust and debris can be prevented.

In this embodiment, the indexing mechanism 400 includes an indexing motor 410, a coupling 420, a worm wheel 430 and a worm 440, wherein opposite ends of the coupling 420 are respectively connected with the indexing motor 410 and the worm 440, an output end of the indexing mechanism 400 is the worm wheel 430, the worm wheel 430 is sleeved and fixed on the locking mechanism 300, and the worm wheel 430 is engaged with the worm 440 to drive the locking mechanism 300 to rotate and index.

It is to be understood that the indexing mechanism 400 is a common component in the art, and in the embodiments of the present utility model, the indexing mechanism 400 is not innovated, and the structure, principle, and usage thereof will be apparent to those skilled in the art, and will not be described in detail herein.

Another embodiment of the present utility model provides a drilling, punching and tapping integrated machine 600, which includes a machine base 610, wherein a drilling mechanism 710, a punching mechanism 720, a tapping mechanism 730 and a self-centering locking mechanism 100 are disposed on the machine base 610, and the drilling mechanism 710, the punching mechanism 720 and the tapping mechanism 730 are all circumferentially disposed on the machine base 610 with the axis of the locking mechanism 300 as the center of a circle, as shown in fig. 4.

It will be appreciated that the drilling mechanism 710 is provided with two sets.

So set up, after self-centering locking structure 100 locks circular blank 800 centering, indexing mechanism 400 drives circular blank 800 rotation indexing, and two sets of boring mechanism 710 preferentially bore holes to circular blank 800, and notching mechanism 720 notching the holes bored by two sets of boring mechanism 710, and tapping mechanism 730 carries out thread machining to the inner wall of the holes.

It can be appreciated that the drilling and tapping integrated machine 600 is further provided with a control assembly 740, and the control assembly 740 is respectively electrically connected with the drilling mechanism 710, the notching mechanism 720, the tapping mechanism 730 and the self-centering locking structure 100, so that the drilling and tapping integrated machine 600 can intelligently complete centering, locking and processing, and automation of the drilling and tapping integrated machine 600 is realized.

While the preferred embodiment of the present utility model has been described in detail, the utility model is not limited to the embodiments, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the utility model, and these modifications and substitutions are intended to be included in the scope of the present utility model as defined in the appended claims.

Claims

1. The self-centering locking structure is characterized by comprising a centering mechanism, a locking mechanism and an indexing mechanism;

2. The self-centering locking mechanism of claim 1, wherein said transmission assembly comprises a fixed plate and a transmission driver, said centering member being slidably coupled to said fixed plate in a direction toward an axis of said locking mechanism, an output of said transmission driver being coupled to said centering member for relative sliding movement of said centering member and said fixed plate.

3. The self-centering locking mechanism of claim 2, wherein said transmission assembly further comprises a linkage and a movable plate, each of said centering members being connected with one of said linkages, a plurality of said linkages passing through said fixed plate and being connected to said movable plate, said transmission drive being connected to said movable plate, an output of said transmission drive extending vertically and being connected to said fixed plate, said transmission assembly being configured to: when the transmission driving piece is started, the movable plate and the fixed plate relatively move along the up-down direction, and the movable plate can simultaneously drive a plurality of linkage pieces to move so as to enable a plurality of centering pieces to be close to or far away from the axis of the locking mechanism.

4. A self-centering locking arrangement as claimed in claim 3, wherein said linkage is one of a diagonal bar, a diagonal block and a link.

5. The self-centering locking structure of claim 1, wherein said centering elements are three and uniformly circumferentially disposed.

6. A self-centering locking arrangement as claimed in claim 3, wherein said locking mechanism comprises:

7. The self-centering locking structure of claim 6, wherein said first locking member is cylindrical and has a diameter greater than a slot width of said clamping slot.

8. The self-centering locking structure of claim 6, wherein an upper surface of the spacing chassis is provided with a spacing groove along an edge thereof, the spacing groove being stepped, the spacing groove being configured to: the round blank is embedded in the limit groove and is in clearance fit with the limit groove.

9. The self-centering locking structure of claim 8, wherein a landing is connected to said fixed plate, said landing configured to: the upper surface of the stacking table is leveled with the upper surface of the circular blank embedded in the limiting groove, so that the second locking piece can translate between the first locking piece and the circular blank.

10. The drilling, punching and tapping integrated machine is characterized by comprising a drilling mechanism, a punching mechanism, a tapping mechanism and the self-centering locking structure according to any one of claims 1 to 9, wherein the drilling mechanism, the punching mechanism and the tapping mechanism are circumferentially arranged by taking an axis of the locking mechanism as a circle center.