CN210878362U - Positioning and clamping device for workpiece - Google Patents
Positioning and clamping device for workpiece Download PDFInfo
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- CN210878362U CN210878362U CN201921561950.6U CN201921561950U CN210878362U CN 210878362 U CN210878362 U CN 210878362U CN 201921561950 U CN201921561950 U CN 201921561950U CN 210878362 U CN210878362 U CN 210878362U
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Abstract
The utility model discloses a positioning and clamping device of work piece, including the chassis, be used for pressing from both sides the clamping mechanism at tight work piece both ends, first support, second support, the connection that one of them clamping mechanism can rotate is on first support, and the connection that another clamping mechanism can rotate is on the second support, and the installation that first support or second support can remove is equipped with locking mechanism on first support or the second support on the chassis. The utility model has the advantages that: the clamping mechanism can be locked and positioned by the locking mechanism, the distance between the supports can be adjusted, the clamping mechanism is suitable for workpieces with different lengths, the clamping mechanism can be clamped, rotated, positioned and adjusted, and the clamping mechanism is more suitable for larger workpieces.
Description
Technical Field
The utility model relates to a machining device especially relates to a positioning and clamping device of work piece.
Background
The development of the Chinese industry is gradually turning to automation and intellectualization, particularly in the occasions with severe working conditions; different positioning and clamping tool equipment is needed for coping with different working environments; in order to ensure the machining precision and improve the production efficiency, the workpiece has to be correctly positioned on the positioning device to limit six degrees of freedom, namely three-direction movement and three-direction rotation, of the workpiece on the positioning device, so that the position of the workpiece is fixed, the positioning of the clamped workpiece is generally damaged due to the fact that the workpiece is subjected to large external force (mainly dead weight) during machining on the basis of positioning, and then clamping force needs to be applied to the workpiece to prevent the workpiece from moving. The workpiece welding is the most common process in equipment manufacturing, a plurality of large I-shaped steel type welding pieces need to be turned in the welding process, manual turning is not suitable due to the fact that the workpieces are large, the workpieces are generally required to be clamped and turned after being supported by other supports in the conventional clamping and turning mode, or welding faces required by a mechanism with a clamping function after the workpieces are clamped cannot be reserved.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve lies in: how to solve the problem that when the work piece is bigger, it is difficult to clamp and rotate.
The utility model discloses a following technical means realizes solving above-mentioned technical problem:
the utility model provides a location clamping device of work piece, includes the chassis, is used for pressing from both sides the clamping mechanism at work piece both ends, first support, second support, and one of them clamping mechanism can be rotatory connect on first support, and another clamping mechanism can be rotatory connect on the second support, and first support or second support can be removed install on the chassis, are equipped with locking mechanism on first support or/and the second support.
The clamping mechanism is used for clamping the workpiece, is suitable for larger workpieces, solves the problem that the clamping force is insufficient when only one end is clamped, can rotate, does not need to lift the workpiece or replace a clamp, reduces the processes, and can lock and position the clamping mechanism after rotating to a proper angle; furthermore, the distance between two supports can be adjusted, is adapted to the work piece of different length, consequently, the utility model provides a clamping device can realize pressing from both sides tightly, rotatory, location, regulation, adapts to great work piece more.
Preferably, clamping mechanism includes backup pad, first connecting rod, second connecting rod, third connecting rod, spanner, the backup pad is L type structure, and the top of connecting the backup pad is rotated to the one end of first connecting rod, and the other end of first connecting rod rotates the one end of connecting the second connecting rod, and the other end of second connecting rod rotates the one end of connecting the third connecting rod, and the other end of third connecting rod rotates the middle part of connecting the backup pad, and the spanner rotates the junction of connecting first connecting rod and second connecting rod, and when pressing from both sides tight work piece, first connecting rod and second connecting rod are in same straight line and form the auto-lock, and the bottom plate of third connecting rod and backup pad presss from both sides tight work piece.
The utility model discloses well first connecting rod and backup pad department form a revolute pair between revolute pair, first connecting rod and the second connecting rod, form a revolute pair between second connecting rod and the third connecting rod, during locking, operation spanner for "three revolute pair is with on a straight line, and the dead point is auto-lock promptly", thereby realizes locking the work piece, simple structure, reliable, easy operation.
Preferably, the first support comprises a first support body, a first support shaft, a first bearing seat and a first bearing, a mounting hole is formed in the middle of the first support body, the first bearing seat is fixed on the first support body, the first bearing is installed in the first bearing seat, the first support shaft transversely penetrates through the first bearing and the mounting hole, and the clamping device is fixedly installed at one end, far away from the first bearing seat, of the first support shaft.
Preferably, the first connecting rod and the wrench form an integrated V-shaped structure, and the bend of the V-shaped structure is located at one end of the third connecting rod and is in rotating connection.
The utility model discloses a bearing realizes rotating the connection.
Preferably, locking mechanism includes positioning disk, rocking handle, locating pin, and positioning disk fixed mounting is on primary shaft bearing, and rocking handle fixed mounting is close to primary shaft bearing's one end at primary shaft bearing, and primary shaft bearing is stretched out to primary shaft bearing, is equipped with a plurality of angle holes on the positioning disk, is equipped with the locating hole on the rocking handle, and the locating pin passes locating hole, angle hole in proper order.
Preferably, the number of the angle holes is four, and the four angle holes are uniformly arranged along the circumference. Corresponding to 0 °, 90 °, 180 °, 270 °. Other angles may be provided in addition to this.
The utility model discloses a locating hole is locked by the locating pin after corresponding with the angle hole, realizes the locking after the rotation.
Preferably, the second support includes second support body, second back shaft, second bearing frame, second bearing, and the second support body middle part is equipped with the mounting hole, and second bearing frame is fixed on the second support body, and the second bearing is installed in the second bearing frame, and second back shaft transversely passes second bearing, mounting hole, and clamping device fixed mounting is in the one end of second back shaft.
Preferably, the device also comprises at least one guide rail and at least one sliding block, wherein the guide rail is fixedly arranged on the bottom frame, the sliding block is connected on the guide rail in a sliding manner, and the bottom of the first support or the second support is fixedly connected with the sliding block.
The utility model discloses a can slide between slider and the guide rail, realize that the distance between first support and the second support is adjustable, because of one of them support is fixed mounting, another support is swing joint, behind the installation work piece, can realize that the support of activity is fixed, guarantees the fixed of whole device, and adjustable mechanism makes the adaptability stronger.
Preferably, the support device further comprises support steel, the support steel is fixed on the upper surface of the base frame, and the guide rail is installed on the support steel.
The support steel can be welded or bolted with the bottom plate, and the purpose of setting up the support steel is that if the guide rail produced damage or partly be connected not hard up with the bracing piece, direct change guide rail or/and support steel need not to change the base, reduce cost.
The utility model has the advantages that:
(1) the clamping mechanism is used for clamping the workpiece, is suitable for larger workpieces, solves the problem that the clamping force is insufficient when only one end is clamped, can rotate, does not need to lift the workpiece or replace a clamp, reduces the processes, and can lock and position the clamping mechanism after rotating to a proper angle; moreover, the distance between the two brackets can be adjusted, so that the positioning and clamping device is suitable for workpieces with different lengths, and can realize clamping, rotation, positioning and adjustment, and is more suitable for larger workpieces;
(2) in the utility model, a rotating pair is formed between the first connecting rod and the supporting plate, a rotating pair is formed between the first connecting rod and the second connecting rod, and a rotating pair is formed between the second connecting rod and the third connecting rod, when the locking mechanism is used, the spanner is operated to ensure that the three rotating pairs are on the same straight line to form a dead point, namely self-locking, thereby realizing the locking of the workpiece, and the locking mechanism has simple and reliable structure and simple operation;
(3) the utility model discloses a can slide between slider and the guide rail, realize that the distance between first support and the second support is adjustable, because of one of them support is fixed mounting, another support is swing joint, behind the installation work piece, can realize that the support of activity is fixed, guarantees the fixed of whole device, and adjustable mechanism makes the adaptability stronger.
Drawings
Fig. 1 is a schematic structural view of a positioning and clamping device for a workpiece according to a first embodiment of the present invention;
FIG. 2 is a schematic view of the connection structure of the first bracket and the clamping mechanism;
FIG. 3 is a schematic diagram of the operation of FIG. 2;
FIG. 4 is a schematic view of the connection structure of the second bracket and the clamping mechanism;
FIG. 5 is a cross-sectional view of FIG. 4;
FIG. 6 is a side view of the drawing;
FIG. 7 is a locking schematic;
FIG. 8 is a schematic view of a guide rail and a slider according to a second embodiment;
FIG. 9 is a schematic view of a use state;
fig. 10 is a schematic structural view of a lock mechanism of the third embodiment.
Reference numbers in the figures: a base frame 1, a guide rail 11, a slide block 12, a support steel 13,
A first bracket 3, a first frame body 31, a first supporting shaft 32, a first bearing seat 33, a first bearing 34,
A second bracket 4, a second frame body 41, a second supporting shaft 42, a second bearing seat 43, a second bearing 44,
A locking mechanism 5, a positioning plate 51, a rocking handle 52, a positioning pin 53, a workpiece 6,
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1, a positioning and clamping device for a workpiece includes an underframe 1, a clamping mechanism 2 for clamping two ends of the workpiece, a first support 3, and a second support 4, wherein the clamping mechanism 2 on the left side is rotatably connected to the first support 3, the clamping mechanism 2 on the right side is rotatably connected to the second support 4, the first support or the second support is movably mounted on the underframe, and a locking mechanism 5 is arranged on the first support 3 or/and the second support 4; in this embodiment, the first support 3 is fixedly mounted on the bottom frame 1, the second support 4 can move in the horizontal direction, the first support 3 and the second support 4 are clamped in order to adapt to the clamping, the heights of the clamping mechanisms 2 at the two positions are consistent and are positioned on the same straight line, the locking mechanism 5 is arranged on the first support 3, and the locking mechanism is not arranged on the second support 4.
In this embodiment, as shown in fig. 2 and 3, the clamping mechanism 2 includes a support plate 21, a first link 22, a second link 23, a third link 24, and a wrench 25;
the supporting plate 21 is of an L-shaped or inverted T-shaped structure, bolt holes for connection are formed in the bottom plate, reinforcing ribs are arranged between the transverse plate and the vertical plate, and the middle of the supporting plate 21 and the bottom plate are fixed on the first support 3 and the second support 4 through pressing plates 26;
one end of the first connecting rod 22 is rotatably connected with the top end of the supporting plate 21 through a rotating pin shaft, the other end of the first connecting rod 22 is rotatably connected with one end of the second connecting rod 23 through a rotating pin shaft 27, the other end of the second connecting rod 23 is rotatably connected with one end of the third connecting rod 24 through a rotating pin shaft 27, the other end of the third connecting rod 24 is rotatably connected with the middle part of the supporting plate 21 through a rotating pin shaft 27, and a connecting plate can be adaptively added in the middle part of the supporting plate 21 and is used for being connected with the third connecting rod 24; referring to fig. 3, the dotted line portion is an open state, the solid line portion is a locked state, the wrench 25 is rotatably connected to the connection portion of the first link 22 and the second link 23, such that the upper portion of the support plate 21-the front end of the wrench 25-the second link 23-the third link 24-the upper portion of the support plate 21 form a quadrilateral mechanism, the upper ends of the first link 22 and the support plate 21, the first link 22 and the second link 23, the second link 23 and the third link 24, and the three interconnection portions form a revolute pair, by manually operating the rear end of the wrench 25, the rotation of the third link 24 on the support plate 21 can be realized, when the front end of the wrench 11, the first link 22 and the second link 23 move to a straight line, the three revolute pairs are in the same straight line to form a dead point, i.e. self-locking, and the bottom plate of the third link 24 and the support plate 21 at the dead point position clamps the, Reliable and simple to operate.
The first connecting rod 22 and the second connecting rod 23 may be round rods or flat rods, and the rigidity is ensured, and the third connecting rod 24 is required to clamp the workpiece, and may be larger than the first connecting rod 22 and the second connecting rod 23 in the width direction, so that the contact surface between the third connecting rod and the workpiece is larger.
As shown in fig. 2, the first bracket 3 includes a first bracket body 31, a first support shaft 32, a first bearing seat 33, and a first bearing 34;
the middle part of the first frame body 31 is provided with a mounting hole, the first bearing seat 33 is fixed on the left side of the first frame body through a bolt, the central hole of the first bearing seat 33 is coincident with the central axis of the mounting hole, the first bearings 34 are installed in the first bearing seat 33 in pairs, the outer ring of the first bearing 34 is positioned through a shaft shoulder and a hole retainer ring, the first support shaft 32 transversely passes through the first bearing 34 and the mounting hole, the clamping device 2 is fixedly installed at the right end of the first support shaft 32, specifically, a through hole is arranged between the middle part of the support plate 21 and the bottom plate, the right end of the first support shaft 32 is connected with the through hole in a hardened or transition fit manner, the press plate 26 is fixed at the right end of the first support shaft 32 through a bolt, the left end of the first support shaft 32 is in interference fit with the first bearing 34, the inner ring of the first bearing 34 is positioned through the shaft shoulder and the shaft retainer ring, the middle part of the, the function of enabling the rotation of the clamping mechanism 2 is realized.
Wherein the first bearing 34 is an angular contact bearing.
As shown in fig. 2, the locking mechanism 5 includes a positioning plate 51, a rocking handle 52, and a positioning pin 53; the locking mechanism 5 is installed at the left side of the first housing 31.
Positioning disk 51 passes through bolt fixed mounting in the left side of first bearing frame 33, rocking handle 52 fixed mounting in the left end of first supporting shaft 32, and the left end of first supporting shaft 32 surpasss first bearing frame 33, is equipped with a plurality of angle holes on the positioning disk 51, is equipped with the locating hole on the rocking handle 52, and locating pin 53 passes locating hole, angle hole in proper order.
Wherein, the axle head at first supporting shaft 32 is installed in the cooperation of rocking handle 52, for preventing that rocking handle 52 from skidding on first supporting shaft 32, rocking handle 52 and first supporting shaft 32 have multiple cooperation mode, one is connected through the key, secondly through square hole and square shaft cooperation, three be the welding together, four be through multiple mounting means such as round pin axle cooperation, be the square through rocking handle 52 in this embodiment, the left end appearance of first supporting shaft 32 is square shaft cooperation form, the outside can also be through gland and bolt fastening again, prevent rocking handle 52 axial float. Similarly, the support plate 21 is mounted at the other end of the first support shaft 32 in a matching manner in various ways, where an inner hole of the support plate 21 is selected as a square, and the shape of the first support shaft 32 is a matching form of a square hole and a square shaft; the support plate 21 is fixed to the first support shaft 32 by the pressing plate 26 and the bolts from the outside, and the support plate 21 is prevented from moving in the axial direction.
In the present embodiment, as shown in fig. 6 and 7, the number of the angle holes is four, and the four angle holes are uniformly arranged along the circumference. Corresponding to 0 °, 90 °, 180 °, 270 °. Other angles may be provided in addition to this. This embodiment is locked by the locating pin after through locating hole and angle hole correspondence, realizes the locking after the rotation.
As shown in fig. 4 and 5, the second bracket 4 includes a second bracket body 41, a second support shaft 42, a second bearing seat 43 and a second bearing 44, a mounting hole is formed in the middle of the second bracket body 41, the second bearing seat 43 is fixed on the second bracket body 41 through a bolt, the second bearing 44 is installed in the first bearing seat in pair, the second support shaft 42 transversely passes through the second bearing and the mounting hole, and the clamping device is fixedly installed at one end of the second support shaft. The second bearing 44 is an angular contact ball bearing, and the specific mounting manner refers to the mounting of the parts on the first bracket 3.
In the embodiment, the workpiece is clamped by the clamping mechanisms at two ends, so that the clamping mechanism is suitable for larger workpieces, the problem that the clamping force is insufficient when only one end is clamped is solved, meanwhile, the clamping mechanism can rotate, the workpiece does not need to be dismounted or the clamp does not need to be replaced, the processes are reduced, and after the clamping mechanism is rotated to a proper angle, the locking mechanism 5 can lock and position the clamping mechanism 2; moreover, the distance between two supports can be adjusted, is adapted to the work piece of different length, therefore, the location clamping device of this embodiment can realize pressing from both sides tight, rotation, location, regulation, adapts to great work piece more.
Example two:
as shown in fig. 8, the present embodiment is different from the first embodiment in that: the distance between the first bracket and the second bracket is adjustable;
the embodiment also comprises at least one guide rail 11, at least one sliding block 12 and support steel 13, wherein the support steel 13 is fixed on the upper surface of the base frame 1, the guide rail 11 is installed on the support steel 13, the guide rail 11 is fixedly installed on the base frame 1, the sliding block 12 is slidably connected on the guide rail 11, and the bottom of the second bracket 4 is fixedly connected with the sliding block 12. The supporting steel 13 can be welded or bolted with the bottom plate 1, and the purpose of arranging the supporting steel 13 is to directly replace the guide rail or/and the supporting steel without replacing a base and reduce the cost if the guide rail is damaged or is partially connected with the supporting rod and loosened.
The utility model discloses a can slide between slider 12 and the guide rail 11, realize that the distance between first support 3 and the second support 4 is adjustable, first support 3 is fixed mounting, and second support 4 is swing joint, behind the installation work piece, can realize that the support of activity is fixed, guarantees the fixed of whole device, and adjustable mechanism makes the adaptability stronger.
As shown in fig. 9, in practical use, two second brackets 4 may be disposed on the guide rail 11, the two second brackets 4 may slide on the guide rail, and correspondingly, two first brackets 3 are disposed, so as to achieve the purpose of simultaneously mounting two workpieces.
Example three:
as shown in fig. 10, the present embodiment is different from the first embodiment in that: the first connecting rod 22 and the wrench 25 are an integral piece to form a V-shaped structure 28, the front end of the V-shaped structure 28 is rotatably connected with the top end of the supporting plate 21, the bent part of the V-shaped structure 28 is rotatably connected with one end of the third connecting rod 23, and the rear end of the V-shaped structure 28 forms a handle. The included angle of the V-shaped structure 28 is an obtuse angle.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (8)
1. The positioning and clamping device for the workpiece is characterized by comprising an underframe, clamping mechanisms for clamping two ends of the workpiece, a first support and a second support, wherein one clamping mechanism can be rotatably connected to the first support, the other clamping mechanism can be rotatably connected to the second support, the first support or the second support can be movably arranged on the underframe, and locking mechanisms are arranged on the first support or/and the second support; the clamping mechanism comprises a supporting plate, a first connecting rod, a second connecting rod, a third connecting rod and a wrench, the supporting plate is of an L-shaped structure, one end of the first connecting rod is rotated to be connected with the top end of the supporting plate, the other end of the first connecting rod is rotated to be connected with one end of the second connecting rod, the other end of the second connecting rod is rotated to be connected with one end of the third connecting rod, the other end of the third connecting rod is rotated to be connected with the middle of the supporting plate, the wrench is rotated to be connected with the joint of the first connecting rod and the second connecting rod, when a workpiece is clamped, the first connecting rod and the second connecting rod are located on the same straight line to.
2. The positioning and clamping device for the workpiece as recited in claim 1, wherein the first connecting rod and the wrench form an integral V-shaped structure, and the bend of the V-shaped structure is located at one end of the third connecting rod for rotational connection.
3. The positioning and clamping device for the workpiece as recited in claim 1, wherein the first support comprises a first support body, a first support shaft, a first bearing seat, and a first bearing, a mounting hole is formed in the middle of the first support body, the first bearing seat is fixed on the first support body, the first bearing is installed in the first bearing seat, the first support shaft transversely penetrates through the first bearing and the mounting hole, and the clamping device is fixedly installed at one end of the first support shaft, which is far away from the first bearing seat.
4. The workpiece positioning and clamping device as claimed in claim 3, wherein the locking mechanism comprises a positioning plate, a rocking handle and a positioning pin, the positioning plate is fixedly mounted on the first bearing block, the rocking handle is fixedly mounted at one end of the first supporting shaft close to the first bearing block, the first supporting shaft extends out of the first bearing block, a plurality of angle holes are formed in the positioning plate, a positioning hole is formed in the rocking handle, and the positioning pin sequentially penetrates through the positioning hole and the angle holes.
5. A workpiece positioning and clamping device as claimed in claim 4, characterized in that the number of said angular holes is four, and four angular holes are uniformly arranged along the circumference.
6. The positioning and clamping device for the workpiece according to claim 1, wherein the second bracket comprises a second bracket body, a second supporting shaft, a second bearing seat and a second bearing, a mounting hole is formed in the middle of the second bracket body, the second bearing seat is fixed on the second bracket body, the second bearing is mounted in the second bearing seat, the second supporting shaft transversely penetrates through the second bearing and the mounting hole, and the clamping device is fixedly mounted at one end of the second supporting shaft.
7. The positioning and clamping device for the workpiece as recited in claim 1, further comprising at least one guide rail and at least one sliding block, wherein the guide rail is fixedly mounted on the base frame, the sliding block is slidably connected to the guide rail, and the bottom of the first bracket or the second bracket is fixedly connected to the sliding block.
8. The apparatus of claim 7, further comprising a support steel fixed to the upper surface of the base frame, wherein the guide rail is mounted on the support steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921561950.6U CN210878362U (en) | 2019-09-19 | 2019-09-19 | Positioning and clamping device for workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921561950.6U CN210878362U (en) | 2019-09-19 | 2019-09-19 | Positioning and clamping device for workpiece |
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| Publication Number | Publication Date |
|---|---|
| CN210878362U true CN210878362U (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921561950.6U Active CN210878362U (en) | 2019-09-19 | 2019-09-19 | Positioning and clamping device for workpiece |
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| CN (1) | CN210878362U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112518328A (en) * | 2020-11-20 | 2021-03-19 | 重庆优齐机械制造有限公司 | Machining center for rear support of front spring of automobile |
| CN112762327A (en) * | 2021-01-16 | 2021-05-07 | 兰州大学 | Profile clamping device and clamping method |
-
2019
- 2019-09-19 CN CN201921561950.6U patent/CN210878362U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112518328A (en) * | 2020-11-20 | 2021-03-19 | 重庆优齐机械制造有限公司 | Machining center for rear support of front spring of automobile |
| CN112518328B (en) * | 2020-11-20 | 2024-04-26 | 重庆优齐机械制造有限公司 | Automobile front spring rear support machining center |
| CN112762327A (en) * | 2021-01-16 | 2021-05-07 | 兰州大学 | Profile clamping device and clamping method |
| CN112762327B (en) * | 2021-01-16 | 2024-04-12 | 兰州大学 | Profile clamping device and clamping method |
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