CN219293711U - Jig for avoiding deformation of workpiece - Google Patents

Abstract

The utility model provides a jig for avoiding deformation of a workpiece, which comprises: the inner wall of the protection plate is provided with an arc-shaped surface matched with the to-be-machined piece; fitting parts arranged at two ends of the protection plate; and a fastening mechanism which is matched with the assembly part and then connects and fixes the protection boards together; after the protection plate is arranged on the outer side of the workpiece to be folded, a stable whole ring structure is formed through the clamping assembly, the ring side wall of the annular thin-wall metal piece is protected conveniently, deformation generated during sand blasting treatment of the thin-wall metal piece with the top opening is avoided, the structure is simple, the operation is convenient, and the use cost is low.

Description

Jig for avoiding deformation of workpiece

Technical Field

The utility model relates to the technical field of sand blasting treatment of metal products, in particular to a jig for preventing deformation of a workpiece.

Background

In the manufacturing and using processes of the metal piece, sand blasting is often required, and for annular thin-wall metal products with openings at the tops, the wall thickness of the annular thin-wall metal products is gradually thinned along with the repeated production of the annular thin-wall metal products, and when the inner surface of a workpiece is subjected to sand blasting, the impact force of a sand blasting medium easily causes the deformation amplitude of the thin wall to be larger and larger; for annular products that are open at the top and have notches in the side walls, distortion of the open portion is particularly severe after the product is sandblasted and assembled.

Chinese patent CN 111702662A discloses a sand blasting device for preventing deformation of aluminum alloy thin parts, comprising a working box, wherein a sand blasting cavity is arranged in the working box, a lifting mechanism is arranged on the inner wall of the left side of the sand blasting cavity, a power conversion mechanism is arranged on the bottom wall of the sand blasting cavity, an iron sand cavity is arranged on the inner top wall of the sand blasting cavity, a conveying cavity is arranged on the inner top wall of the iron sand cavity, a conveying mechanism is arranged in the conveying cavity, an iron sand discharging block extending upwards into the conveying cavity is fixedly arranged on the inner top wall of the iron sand cavity, and an iron sand discharging cavity communicated with the conveying cavity and the iron sand cavity is arranged in the iron sand discharging block in a penetrating manner; the utility model realizes the purpose of preventing the thin wall of the workpiece from deforming when the aluminum alloy workpiece is subjected to sand blasting, can automatically recycle the sand after sand blasting, is beneficial to production, and is suitable for popularization in various large mechanical processing factories.

But this technical scheme still has some problems, and it is tight with work piece clamp through electro-magnet promotion splint, and electro-magnet and splint are established inside the working box, and equipment and maintenance are difficult, and overall structure is complicated, and is unsuitable for the great metalwork sandblast of size and use, and in addition, this scheme needs to use power equipment, has increased circuit potential safety hazard and use cost, consequently, need design a smelting tool and carry out the protection of preapring for an unfavorable turn of events to annular thin wall metalwork when sandblast is handled.

Disclosure of Invention

The utility model aims at overcoming the defects of the prior art, and provides a jig for avoiding deformation of a workpiece, wherein a stable whole ring structure is formed through a clamping assembly after a protective plate is arranged on the outer side of the workpiece to fold, so that the ring side wall of an annular thin-wall metal piece is conveniently protected, the metal piece is prevented from deforming during sand blasting, the structure is simple, the operation is convenient, the use cost is low, and the problem that the thin-wall annular metal piece with an opening at the top is easy to deform during sand blasting is solved.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a jig for avoiding deformation of a workpiece, comprising:

the inner wall of the protection plate is provided with an arc-shaped surface matched with the to-be-machined piece;

fitting parts arranged at two ends of the protection plate; and

and the fastening mechanism is matched with the assembly part and then used for connecting and fixing the protection plates together.

Specifically, before the inner surface of the workpiece to be processed is processed by sand blasting, the protection plates are placed on the outer side of the workpiece to be processed, and are connected through the fastening mechanism, so that a stable whole ring structure is formed on the outer side of the workpiece to be processed, the outer side surface of the workpiece to be processed is hooped in a ring shape, the problem that the workpiece to be processed expands outwards due to the outward impact force generated by the workpiece to be processed during sand blasting is avoided, and the dimensional accuracy of the workpiece to be processed after sand blasting is ensured.

Preferably, the protection plate is in a semi-ring shape, and two groups of fitting parts are plane at one side close to each other.

In particular, the number of the protection plates is preferably two, so that the workload of assembling the protection plates together is reduced, and the two protection plates are assembled together through a planar assembly part to ensure the assembly stability; of course, the protection plate can also be a plurality of arc plates with the shape smaller than a semicircle ring.

Preferably, the fastening mechanism includes:

a plurality of screw holes arranged on the assembly part; and

and the bolt piece is matched with the screw hole for use.

Specifically, after the two protection plates are closed at the outer side of the workpiece to be processed, the two assembly fittings are mutually attached, and the two assembly fittings are installed together through the bolt pieces, so that the two protection plates form a stable annular structure.

As still another preferred aspect, the fastening mechanism includes:

a plurality of guide slots provided in one of said sets of fittings;

a plurality of guide rods disposed on the other set of fittings in alignment with the guide slots; and

and the clamping assembly is used for fixing the guide rod inserted into the guide groove.

Specifically, the guide groove is formed in the left protection plate, the guide rod is arranged on the right protection plate, the right protection plate moves leftwards and then is mutually close to the left protection plate, the to-be-machined piece and the protection plate are placed on the ground or the workbench, and then the protection plate is moved, so that the two protection plates are mutually close to each other at the outer side of the to-be-machined piece.

The guide rod and the guide groove are arranged to guide and correct the motion trail of the two protection boards, so that the two protection boards are prevented from being matched and deflected, a stable-size annular structure is formed after the two protection boards are close, and the annular structure is tightly attached to the outer side of a workpiece to be processed for deformation prevention protection.

Preferably, the guide rod is in a column shape which is transversely arranged, and the end part of the guide rod is provided with a conical section.

Specifically, the guide rod can be inserted into the guide groove more smoothly by arranging the conical section.

As still another preferred aspect, the clamping assembly includes:

the clamping groove is arranged on the guide rod;

a clamping plate inserted into the clamping groove; and

and the control piece is used for controlling the matching state of the clamping plate and the clamping groove.

Specifically, in the initial state, the clamping plate is positioned at the top end of the moving range and is staggered up and down with the clamping groove; after the right side protection board moves leftwards and the left side protection board are close, the clamping groove also moves to the left side of the guide groove along with the right side protection board, and then the clamping plate moves downwards, so that the clamping plate is inserted into the clamping groove to fix the guide rod, and the two protection boards are fixed together.

Preferably, a plurality of guide rods arranged on a single assembly part are distributed longitudinally, the clamping grooves are formed in the top ends of the guide rods, and a plurality of cross rods which are respectively inserted into the clamping grooves in the same row are arranged in the clamping plates.

Specifically, after the clamping plate moves downwards, the cross rods are inserted into the corresponding clamping grooves at the same time, so that the function that a single clamping plate clamps the guide rods at the same time is realized, and the operation is more convenient.

As still another preference, the control member includes:

a through groove arranged in the clamping plate;

a cam rotatably arranged on the assembly part and positioned in the through groove; and

the handle is arranged on the cam and positioned at the outer side of the clamping plate;

the cam is positioned at the eccentric position of the through groove, and the cam pushes the clamping plate to move upwards through the through groove after rotating and props against the inner wall of the through groove in an inclined mode.

Specifically, in the initial state, the cam jacks up the clamping plate upwards and inclines rightwards, and the cam is kept stable under the gravity extrusion of the clamping plate by matching with the fact that the integral gravity center of the upper cam and the handle is deviated to the right lower side; after the guide rod is inserted into the guide groove, the handle is pushed upwards to enable the cam to rotate anticlockwise, then the clamping plate moves downwards and is inserted into the clamping groove to clamp the guide rod, and meanwhile, the cam is extruded by the clamping plate to be kept fixed; thus, the function of controlling the position of the clamping plate through the handle is realized; of course, a spring for pushing the clamping plate to move downwards can be arranged on the clamping plate, so that the stability of the clamping plate after moving downwards is further ensured.

Preferably, the clamping plate, the guide groove and the control piece are all arranged on the same assembly part, and a guide rail for guiding and limiting the clamping plate is arranged on the assembly part.

Specifically, through this kind of setting, conveniently fix the guide arm of inserting in the guide slot.

As still another preferable, a pulley is provided at the bottom of the protection plate.

Specifically, through setting up the resistance when the pulley reducible protection shield removes, conveniently promote two protection shields to remove in the outside of waiting the machined part.

The utility model has the beneficial effects that:

(1) According to the utility model, after the protective plate is arranged on the outer side of the workpiece to be folded, a stable whole ring structure is formed through the clamping assembly, so that the ring side wall of the annular thin-wall metal piece is conveniently protected, the deformation of the thin-wall metal piece during sand blasting treatment is avoided, the structure is simple, the operation is convenient, and the use cost is low.

(2) According to the utility model, the assembly part, the guide groove and the guide rod are arranged on the protection plates, the guide rod and the guide groove guide and correct the movement track of the two protection plates, so that the two protection plates are prevented from being matched and deflected, the dimensional stability of the two protection plates after being close together is ensured, and the deformation-preventing protection effect of the outer side of a workpiece to be processed is further ensured.

(3) According to the utility model, the clamping plates are arranged to move and then are simultaneously inserted into the clamping grooves, so that a plurality of guide rods can be simultaneously clamped, the operation is more convenient, and the working efficiency is high.

(4) According to the utility model, the inclined cam and the handle are arranged, the clamping plate is stably kept after being jacked up by the cam, and the clamping plate is staggered up and down with the guide groove so as to avoid the blocking influence on the action of the guide rod inserted into the guide groove, and after the handle is pushed, the clamping plate automatically moves down and clamps the guide rod, so that the operation is convenient, the clamping plate can keep stable in position before and after movement, the structure is simple, and the use is convenient.

In conclusion, the sand blasting anti-deformation protection device has the advantages of being simple in structure, convenient to operate, low in use cost and the like when used for carrying out sand blasting anti-deformation protection on the annular thin-wall metal piece.

Drawings

FIG. 1 is a perspective view of an overall structure of an embodiment of the present utility model;

FIG. 2 is a schematic view of a protective plate and a workpiece to be processed according to an embodiment of the present utility model;

FIG. 3 is a perspective view of a second embodiment of the present utility model;

FIG. 4 is a schematic diagram of a second exemplary embodiment of a protective plate;

fig. 5 is a side view of the control member of the present utility model with the card lifted upwardly.

Detailed Description

The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Example 1

As shown in fig. 1-2, the present embodiment provides a jig for avoiding deformation of a workpiece, including:

a plurality of protection boards 1 sleeved on the outer side of the workpiece 100, wherein the inner wall of the protection boards 1 is provided with an arc-shaped surface matched with the workpiece 100;

fitting parts 2 provided at both ends of the protection plate 1; and

and a fastening mechanism 3 for connecting and fixing the plurality of protection boards 1 together after being matched with the assembly part 2.

Specifically, the height of the protection board 1 is matched with the height of the workpiece to be processed 100, before the inner surface of the workpiece to be processed 100 is subjected to sand blasting, the protection board 1 is placed on the outer side of the workpiece to be processed 100, and the protection boards 1 are connected through the fastening mechanism 3, so that a stable whole-ring structure is formed on the outer side of the workpiece to be processed 100, the problem that the workpiece to be processed 100 expands outwards and deforms due to the outward impact force generated by the workpiece to be processed 100 during sand blasting is avoided, the dimensional accuracy of the workpiece to be processed 100 after sand blasting is ensured.

As shown in fig. 2, the protection plate 1 is in a semi-ring shape, and two groups of the fitting parts 2 are plane at the sides close to each other.

In particular, the number of the protection plates 1 is preferably two, so that the workload of assembling the protection plates 1 is reduced, and the two protection plates 1 are assembled together through the planar assembly part 2, so that the assembly stability is ensured; of course, the protection plate 1 may alternatively have more arcuate plates having a shape smaller than a semicircle.

As shown in fig. 2, further, the fastening mechanism 3 includes:

a plurality of screw holes 31 provided in the fitting 2; and

and a bolt member 32 used in cooperation with the screw hole 31.

Specifically, after the two protection plates 1 are drawn together on the outer side of the workpiece 100, the two assembly fittings 2 are attached to each other, and the two assembly fittings 2 are mounted together by the bolt members 32, so that the two protection plates 1 form a stable annular structure.

Example two

As shown in fig. 3 to 5, wherein the same or corresponding parts as those in the first embodiment are denoted by the corresponding reference numerals as in the first embodiment, only the points of distinction from the first embodiment will be described below for the sake of brevity. The second embodiment is different from the first embodiment in that:

in this embodiment, the fastening mechanism 3 includes:

a plurality of guide grooves 33 provided on one of the sets of fitting members 2;

a plurality of guide rods 34 provided on the other set of the fitting parts 2 in alignment with the guide grooves 33; and

and a clamping assembly 35 for fixing the guide rod 34 inserted into the guide groove 33.

Specifically, the guide groove 33 is provided on the left side protection plate 1, the guide bar 34 is provided on the right side protection plate 1, the right side protection plate 1 moves to the left and then moves together with the left side protection plate 1, both the workpiece 100 and the protection plate 1 are placed on the ground or the workbench, and then the protection plate 1 is moved so that the two protection plates 1 move together on the outer side of the workpiece 100.

The guide rod 34 and the guide groove 33 are arranged to guide and correct the movement track of the two protection boards 1, so that the two protection boards 1 are prevented from being matched and deflected, a stable-size annular structure is formed after the two protection boards 1 are close, and the annular structure is further ensured to be closely attached to the outer side of the workpiece 100 to be processed for deformation prevention protection.

As shown in fig. 4, further, the guide rod 34 has a column shape disposed in a transverse direction, and an end of the guide rod 34 is provided with a tapered section.

Specifically, the guide rod 34 can be more smoothly inserted into the guide groove 33 by providing the tapered section.

As shown in fig. 3-4, the clamping assembly 35 further includes:

a clamping groove 351 provided on the guide rod 34;

a clamping plate 352 inserted into the clamping groove 351; and

and a control member 353 for controlling the engagement state of the card 352 and the card slot 351.

Specifically, in the initial state, the card 352 is located at the top end of the moving range and is staggered up and down with the card groove 351; after the right protection plate 1 moves left and approaches the left protection plate 1, the clamping groove 351 also moves to the left side of the guide groove 33, and then the clamping plate 352 moves down, so that the clamping plate 352 is inserted into the clamping groove 351 to fix the guide rod 34, thereby fixing the two protection plates 1 together.

Further, the guide rods 34 provided on the single assembly 2 are distributed longitudinally, the clamping grooves 351 are provided at the top ends of the guide rods 34, and the clamping plates 352 are provided with a plurality of cross rods 3521 respectively inserted into the clamping grooves 351 in the same column.

Specifically, after the clamping plate 352 moves downwards, the plurality of cross rods 3521 are simultaneously inserted into the corresponding clamping grooves 351, so that the function that a single clamping plate 352 clamps the plurality of guide rods 34 simultaneously is realized, and the operation is more convenient and efficient.

As shown in fig. 3-5, further, the control 353 includes:

a through slot 3531 provided in the card 352;

a cam 3532 rotatably provided on the fitting 2 and located inside the through groove 3531; and

a handle 3533 provided on the cam 3532 and located outside the card 352;

the cam 3532 is located at an eccentric position of the through groove 3531, and the cam 3532 pushes the clamping plate 352 to move upwards through the through groove 3531 after rotating and is abutted against the inner wall of the through groove 3531 in an inclined manner.

Specifically, as shown in fig. 5, in the initial state, the cam 3532 pushes up the clamping plate 352 and inclines to the right, and the integral center of gravity of the upper cam 3532 and the handle 3533 is matched to be lower right, so that the cam 3532 is kept stable under the gravity extrusion of the clamping plate 352; after the guide rod 34 is inserted into the guide groove 33, the handle 3533 is pushed upwards, so that the cam 3532 rotates anticlockwise, and then the clamping plate 352 moves downwards and is inserted into the clamping groove 351, so that the guide rod 34 is clamped, and meanwhile, the cam 3532 is pressed by the clamping plate 352 to be kept fixed; thus, the function of controlling the position of the clamping plate 352 through the handle 3533 is realized; of course, a spring for pushing the card 352 to move downwards can be arranged on the card 352, so that the stability of the card 352 after moving downwards is further ensured.

As shown in fig. 3-4, further, the clamping plate 352, the guiding groove 33 and the control member 353 are all disposed on the same assembly 2, and the assembly 2 is provided with a guiding rail 21 for guiding and limiting the clamping plate 352.

In particular, by this arrangement, the guide rod 34 inserted into the guide groove 33 is easily fixed.

Example III

As shown in fig. 4, wherein the same or corresponding parts as those in the first embodiment are denoted by the corresponding reference numerals as in the first embodiment, only the points of distinction from the first embodiment will be described below for the sake of brevity. The second embodiment is different from the first embodiment in that:

in this embodiment, a pulley 4 is disposed at the bottom of the protection plate 1.

Specifically, by arranging the pulley 4, the resistance of the protection plates 1 during movement can be reduced, and the two protection plates 1 can be conveniently pushed to move on the outer side of the workpiece 100 to be machined.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. Avoid tool of work piece deformation, its characterized in that includes:

the protective plates (1) are sleeved on the outer side of the to-be-machined piece (100), and arc-shaped surfaces matched with the to-be-machined piece (100) are arranged on the inner walls of the protective plates (1);

fitting parts (2) arranged at two ends of the protective plate (1); and

and the fastening mechanism (3) is matched with the assembly part (2) and then is used for connecting and fixing the protection plates (1) together.

2. The jig for avoiding deformation of a workpiece according to claim 1, wherein,

the protection board (1) is semi-ring-shaped, and two groups of assembly parts (2) are plane on one side close to each other.

3. The jig for avoiding deformation of a workpiece according to claim 1, wherein,

the fastening mechanism (3) includes:

a plurality of screw holes (31) arranged on the assembly part (2); and

and the bolt piece (32) is matched with the screw hole (31) for use.

4. The jig for avoiding deformation of a workpiece according to claim 1, wherein,

the fastening mechanism (3) includes:

a plurality of guide grooves (33) provided on one of the sets of fitting members (2);

a plurality of guide rods (34) arranged on the other group of assembly parts (2) and aligned with the guide grooves (33); and

and a clamping assembly (35) for fixing the guide rod (34) inserted into the guide groove (33).

5. The jig for avoiding deformation of a workpiece according to claim 4, wherein,

the guide rod (34) is in a column shape which is transversely arranged, and a conical section is arranged at the end part of the guide rod (34).

6. The jig for avoiding deformation of a workpiece according to claim 4, wherein,

the clamping assembly (35) comprises:

a clamping groove (351) arranged on the guide rod (34);

a clamping plate (352) inserted into the clamping groove (351); and

and a control member (353) for controlling the state of engagement of the card (352) with the card slot (351).

7. The jig for avoiding deformation of a workpiece according to claim 6, wherein,

the guide rods (34) arranged on the single assembly part (2) are longitudinally distributed, the clamping grooves (351) are formed in the top ends of the guide rods (34), and the clamping plates (352) are internally provided with a plurality of cross rods (3521) which are respectively inserted into the clamping grooves (351) in the same row.

8. The jig for avoiding deformation of a workpiece according to claim 6, wherein,

the control (353) comprises:

a through slot (3531) provided in the card (352);

a cam (3532) rotatably provided on the fitting (2) and located inside the through groove (3531); and

a handle (3533) arranged on the cam (3532) and positioned outside the clamping plate (352);

the cam (3532) is located at the eccentric position of the through groove (3531), and the cam (3532) pushes the clamping plate (352) to move upwards through the through groove (3531) after rotating and props against the inner wall of the through groove (3531) in an inclined mode.

9. The jig for avoiding deformation of a workpiece according to claim 6, wherein,

the clamping plate (352), the guide groove (33) and the control piece (353) are all arranged on the same assembly part (2), and a guide rail (21) for guiding and limiting the clamping plate (352) is arranged on the assembly part (2).

10. The jig for avoiding deformation of a workpiece according to any one of claims 1 to 9,

the bottom of the protection board (1) is provided with a pulley (4).

Images