Mechanical precise positioning device

Abstract

The utility model discloses a mechanical accurate positioning device, including work table, vertical plate, support plate, mechanical arm and positioning mechanism, vertical plate is provided the rear end of work table top, support plate is vertically provided the front end of vertical plate top, mechanical arm is provided the bottom of support plate, the positioning mechanism is provided with the mechanical arm, the support plate is provided with the positioning mechanism. The positioning mechanism is arranged at the top of the workbench; the positioning mechanism comprises a sliding rail, a clamping assembly, a telescopic shaft, a driving box, a containing table, a sliding groove, a bidirectional lead screw, a motor, a screw block and a clamping plate. The clamping assembly comprises a sliding box, a plurality of column grooves, a rail groove, a damper, a spring, a fixing block and a clamping column. The clamping column comprises an inner column and an outer column. According to the scheme, the positioning efficiency and stability of the cylindrical workpiece are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field, concretely is a kind of mechanical precision positioning device. BACKGROUND

[0002] Mechanical precision positioning device is mainly used to determine the accurate position of workpiece or machining tool in the machining process, to ensure machining accuracy and efficiency. Specifically, positioning device fixes and positions workpiece, so that it remains stable during processing, avoiding processing errors caused by position deviation.

[0003] The existing positioning device usually adopts bidirectional arc-shaped clamping plate to clamp cylindrical metal workpiece, and the arc of arc-shaped clamping plate is single. When the circumference of workpiece is large, it is often difficult to clamp well. When the circumference of workpiece is small, the contact point area of arc-shaped clamping plate with workpiece is also relatively small, and it is difficult to cope with the shaking of workpiece during processing.

[0004] Therefore, a solution is needed. UTILITY MODEL CONTENT

[0005] (I) technical problem solved

[0006] In view of the deficiencies of the prior art, the utility model provides a mechanical precision positioning device to solve the problems raised in the background art.

[0007] (II) technical scheme

[0008] To achieve the above purpose, the utility model is realized by the following technical scheme:

[0009] A kind of mechanical precision positioning device, characterized by: including workbench, vertical plate, support plate, mechanical arm and positioning mechanism, the vertical plate is set in the rear end of the top of the workbench, the support plate is vertically set in the top of the vertical plate front end, the mechanical arm is set in the bottom of the support plate, the positioning mechanism is set in the top of the workbench;

[0010] The positioning mechanism comprises slide rails, clamping assemblies, telescopic shafts, drive boxes, placement tables, sliding grooves, bidirectional screw rods, motors, screw blocks and clamping plates, the clamping assemblies are oppositely arranged, the placement table is arranged at the central position on the top of the workbench, the slide rails are oppositely arranged on the left and right sides of the placement table, the clamping assemblies are arranged on each slide rail, the telescopic shafts are arranged at one end of the clamping assemblies away from the placement table, the drive boxes are arranged at one end of each telescopic shaft away from the placement table, the sliding groove is vertically arranged in the placement table, the bidirectional screw rod is arranged in the sliding groove, the motor is arranged at the front end of the placement table, the screw blocks are oppositely arranged on the bidirectional screw rod, and the clamping plates are oppositely arranged on the top of each screw block.

[0011] Preferably, the slide rail is in T-shaped structure, and the clamping plate is in arc-shaped structure.

[0012] Preferably, the clamping assembly comprises a sliding box, a plurality of column grooves, a rail groove, dampers, springs, fixing blocks and clamping columns, the sliding box is wrapped on the slide rail, the plurality of column grooves are uniformly arranged in the sliding box, the rail groove is arranged at the bottom of the sliding box, the dampers are arranged at the innermost ends in each column groove, the springs are arranged on each damper, the fixing blocks are arranged at the outward ends of each damper, and the clamping columns are arranged at the outward ends of each fixing block.

[0013] Preferably, the column groove is in cuboid structure, and the rail groove is in T-shaped structure.

[0014] Preferably, the clamping column comprises an inner column and an outer column, the inner column is in cuboid structure, the outer column is in round head cylindrical structure, and the length of the inner column is greater than that of the outer column.

[0015] (Three) beneficial effects

[0016] The utility model provides a kind of mechanical accurate positioning device.It has the following beneficial effects:

[0017] 1. the scheme is driven by drive box to sliding box by telescopic shaft and is clamped to workpiece, and further clamping is carried out to workpiece by clamping plate driven by bidirectional screw rod of motor, and the stability of positioning is effectively enhanced.

[0018] 2. In addition, each clamping column in sliding box can support workpiece, and can flexibly present the arc of clamping according to the arc of workpiece, so that the positioning efficiency of cylindrical workpiece is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is whole structure schematic view of the utility model;

[0020] Figure 2 It is the sliding box and sliding rail structure schematic view of the utility model;

[0021] Figure 3 It is the sliding box structure schematic view of the utility model;

[0022] Figure 4 It is the sliding box internal structure schematic view of the utility model;

[0023] Figure 5 It is the clamping column structure schematic view of the utility model;

[0024] Figure 6 It is the overhead view and front view cross-sectional view structure schematic view of the utility model placing table.

[0025] In the figure, 1-workbench;2-stand plate;3-supporting plate;4-mechanical arm;5-positioning mechanism;51-sliding rail;52-clamping assembly;521-sliding box;522-a plurality of column grooves;523-rail groove;524-damper;525-spring;526-fixed block;527-clamping column;5271-inner column;5272-outer column;53-telescopic shaft;54-driving box;55-placing table;56-sliding groove;57-bidirectional screw;58-motor;59-screw block;510-clamping plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] Please refer to Figures 1-6 The utility model embodiment provides a kind of technical scheme to realize: a kind of mechanical precision positioning device, it is characterized by: including workbench 1, stand plate 2, supporting plate 3, mechanical arm 4 (model is:‌SCARA type machine arm) and positioning mechanism 5, stand plate 2 is set in the rear end of the top of workbench 1, supporting plate 3 is vertically set in the top of the front end of stand plate 2, mechanical arm 4 is set in the bottom of supporting plate 3, positioning mechanism 5 is set in the top of workbench 1.

[0028] The core positioning mechanism 5 includes slide rails 51, clamping assemblies 52, telescopic shafts 53, drive boxes 54, placement tables 55, sliding grooves 56, bidirectional screw rods 57, motors 58, screw blocks 59, and clamping plates 510. The clamping assemblies 52 are oppositely arranged, the placement table 55 is arranged at the central position on the top of the workbench 1, the slide rails 51 are oppositely arranged on the left and right sides of the placement table 55, the clamping assemblies 52 are arranged on each slide rail 51, the telescopic shafts 53 are arranged at one end of the clamping assemblies 52 away from the placement table 55, the drive boxes 54 are arranged at one end of each telescopic shaft 53 away from the placement table 55, the sliding groove 56 is vertically arranged inside the placement table 55, the bidirectional screw rod 57 is arranged inside the sliding groove 56, the motor 58 is arranged at the front end of the placement table 55, the screw blocks 59 are oppositely arranged on the bidirectional screw rod 57, and the clamping plates 510 are oppositely arranged on the top of each screw block 59. The slide rail 51 has a T-shaped structure, and the clamping plate 510 has an arc-shaped structure.

[0029] Specifically, the clamping assembly 52 includes slide boxes 521, a plurality of column grooves 522, rail grooves 523, dampers 524, springs 525, fixed blocks 526, and clamping columns 527. The slide box 521 is wrapped around the slide rail 51, the column grooves 522 are evenly arranged inside the slide box 521, the rail groove 523 is arranged at the bottom of the slide box 521, the damper 524 is arranged at the innermost end of each column groove 522, the spring 525 is arranged on each damper 524, the fixed block 526 is arranged at the outward end of each damper 524, and the clamping column 527 is arranged at the outward end of each fixed block 526. The column groove 522 has a cuboid structure, and the rail groove 523 has a T-shaped structure.

[0030] The clamping column 527 includes an inner column 5271 and an outer column 5272. The inner column 5271 has a cuboid structure, and the outer column 5272 has a round head cylindrical structure. The length of the inner column 5271 is greater than the length of the outer column 5272.

[0031] The drive box 54 drives the slide box 521 through the telescopic shaft 53 to clamp the workpiece, and the motor 58 drives the clamping plate 510 through the bidirectional screw rod 57 to further clamp the workpiece, effectively enhancing the stability of the positioning. In addition, each clamping column 527 inside the slide box 521 can support the workpiece and flexibly present the clamping arc according to the arc of the workpiece, greatly improving the positioning efficiency of the cylindrical workpiece.

[0032] Working principle: when clamping the cylindrical workpiece, firstly place the workpiece on the workbench, and start the motor 58 and the drive box 54 at the same time, the motor 58 rotates the bidirectional screw rod 57 to drive the screw block 59 and the clamping plate 510 to move to the middle to clamp the front and rear ends of the workpiece, the drive box 54 drives the telescopic shaft 53 to drive the sliding box 521 to move on the sliding rail 51 through the rail groove 523 to the placement table 55, until each outer column 5272 contacts the workpiece, with the continuous movement of the sliding box 521, each outer column 5272 contacting the workpiece will be subjected to different angle pressure and different force on the damper 524 and the spring 525, so that each outer column 5272 will present different length, at this time, all the outer columns 5272 will present the arc suitable for the current cylindrical workpiece as a whole and maintain the clamping state, after subsequent machining by the mechanical arm 4, the clamping plate 510 and the sliding box 521 are loosened, and the outer columns 5272 will restore to the original state under the action of the damper 524 and the spring 525.

[0033] The utility model discloses a 1 - workbench, 2 - vertical board, 3 - support plate, 4 - mechanical arm, 5 - positioning mechanism, 51 - sliding rail, 52 - clamping component, 521 - sliding box, 522 - a plurality of column grooves, 523 - rail groove, 524 - damper, 525 - spring, 526 - fixed block, 527 - clamping column, 5271 - inner column, 5272 - outer column, 53 - telescopic axle, 54 - drive box, 55 - placement table, 56 - sliding groove, 57 - bidirectional screw rod, 58 - motor, 59 - screw block, 510 - clamping plate, these parts are all general standard parts or the parts that the person skilled in the art knows, and the structure and principle are all known to the person skilled in the art through technical manual or through conventional experimental method, the problem solved by the utility model is that the existing positioning device usually adopts the two -way arc -shaped clamping plate to clamp when clamping the cylindrical metal workpiece, and the arc of the arc -shaped clamping plate is single, when the workpiece circumference is relatively large, it is often difficult to clamp well, and when the workpiece circumference is relatively small, the fulcrum area of the arc -shaped clamping plate contacting the workpiece is also relatively small, and it is difficult to cope with the shaking generated when processing the workpiece. The utility model greatly improves the positioning efficiency and stability of the cylindrical workpiece.

[0034] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, and it is obvious for the person skilled in the art that the utility model is not limited to the details of the above -mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point, the embodiment should be regarded as exemplary and non - limiting, and the scope of the utility model is defined by the appended claims instead of the above -mentioned description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any figure mark in the claims should not be regarded as limiting the involved claims.

[0035] Furthermore, it should be understood that although the specification is described in terms of embodiments, the specification is merely a description of select embodiments, and this description is not intended in any way to limit the areas in which the embodiments are applicable. Diversifications upon the preferred embodiments can be created based on the teachings of the specification.

Claims

1. A mechanical precision positioning device, characterized by: The utility model provides a kind of positioning mechanism, including workbench (1), vertical plate (2), support plate (3), mechanical arm (4) and positioning mechanism (5), the vertical plate (2) is set at the rear end of the top of the workbench (1), the support plate (3) is vertically set at the top of the front end of the vertical plate (2), the mechanical arm (4) is set at the bottom of the support plate (3), the positioning mechanism (5) is set at the top of the workbench (1); The positioning mechanism (5) includes slide rail (51), clamping assembly (52), telescopic shaft (53), drive box (54), placement table (55), sliding groove (56), bidirectional screw rod (57), motor (58), screw block (59) and clamping plate (510), the clamping assembly (52) is oppositely arranged, the placement table (55) is arranged at the central position of the top of the workbench (1), the slide rail (51) is oppositely arranged on the left and right sides of the placement table (55), the clamping assembly (52) is arranged on each slide rail (51), the telescopic shaft (53) is arranged at one end of the clamping assembly (52) away from the placement table (55), the drive box (54) is arranged at one end of each telescopic shaft (53) away from the placement table (55), the sliding groove (56) is vertically arranged in the placement table (55), the bidirectional screw rod (57) is arranged in the sliding groove (56), the motor (58) is arranged at the front end of the placement table (55), the screw block (59) is oppositely arranged on the bidirectional screw rod (57), and the clamping plate (510) is oppositely arranged on the top of each screw block (59).

2. A mechanical precision positioning device according to claim 1, characterized in that: The slide rail (51) is T-shaped, and the clamping plate (510) is arc-shaped.

3. A mechanical precision positioning device according to claim 1, characterized in that: The clamping assembly (52) includes slide box (521), a plurality of column grooves (522), rail grooves (523), dampers (524), springs (525), fixed blocks (526) and clamping columns (527), the slide box (521) is wrapped on the slide rail (51), a plurality of column grooves (522) are evenly arranged in the slide box (521), the rail grooves (523) are arranged at the bottom of the slide box (521), the dampers (524) are arranged at the innermost end of each column groove (522), the springs (525) are arranged on each damper (524), the fixed blocks (526) are arranged at the outward end of each damper (524), and the clamping columns (527) are arranged at the outward end of each fixed block (526).

4. A mechanical precision positioning device according to claim 3, characterized in that: The column groove (522) is a rectangular parallelepiped structure, and the rail groove (523) is T-shaped.

5. A mechanical precision positioning device according to claim 3, characterized in that: The clamping column (527) includes an inner column (5271) and an outer column (5272), the inner column (5271) is a rectangular parallelepiped structure, the outer column (5272) is a round head cylindrical structure, and the length of the inner column (5271) is greater than the length of the outer column (5272).

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