Bidirectional centering positioning mechanism

Abstract

The utility model relates to a bidirectional centering positioning mechanism which comprises a first base, a second base, a first air cylinder, a second air cylinder, a first positioning piece and a second positioning piece, the first air cylinder is mechanically fixed on the first base, the second air cylinder is mechanically fixed on the second base, and the first air cylinder and the second air cylinder are oppositely arranged in the horizontal direction. The first positioning piece is in driving connection with the first air cylinder to achieve linear motion of the first positioning piece, and the second positioning piece is in driving connection with the second air cylinder to achieve linear motion of the second positioning piece. The first positioning piece and the second positioning piece are arranged on the two sides of the workpiece respectively, located on the same straight line and used for achieving bidirectional positioning clamping and loosening actions on the workpiece. The centering and clamping device is simple and reasonable in design, centering, positioning and clamping of the two sides of a workpiece are achieved at the same time through the two air cylinders and the two positioning pieces, action response is fast, economical efficiency is good, positioning precision is high, and automatic control is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical manufacturing and assembly, and relates to a bidirectional centering positioning mechanism. Background Art

[0002] With the development of intelligent manufacturing technology, in the manufacturing and assembly fields such as automobiles, ships, aerospace, etc., the specifications of parts are diverse. In the face of the further processing needs of parts, they need to be quickly positioned and clamped. In some processes with high precision requirements, higher positioning accuracy is often required. Especially when positioning using holes on some irregular parts, sometimes the unilateral positioning form is often difficult to meet the positioning accuracy requirements. In order to meet the needs of automated mass production, a special centering positioning mechanism is needed to solve the above problems. Utility Model Content

[0003] The utility model aims to provide a bidirectional centering positioning mechanism, which solves the bidirectional positioning and clamping problem in the existing production of some irregular parts, has high positioning accuracy, fast response, and adapts to specific needs of users.

[0004] To achieve the above-mentioned purpose, an embodiment of the utility model provides a bidirectional centering positioning mechanism, including: a first base, a second base, a first cylinder, a second cylinder, a first positioning member, and a second positioning member. The first cylinder is mechanically fixed to the first base, and the second cylinder is mechanically fixed to the second base. The first cylinder and the second cylinder are arranged relative to each other in the horizontal direction. The first positioning member is driven and connected to the first cylinder to realize the linear movement of the first positioning member, and the second positioning member is driven and connected to the second cylinder to realize the linear movement of the second positioning member. The first positioning member and the second positioning member are respectively placed on both sides of the workpiece and the central axes of the two are located on the same straight line to realize the bidirectional positioning, clamping and releasing actions of the workpiece.

[0005] Furthermore, it also includes: a third base, a first connecting block, a slide rail, and a slider. The first positioning member is driven and connected to the first cylinder through the first connecting block. The slider is arranged below the first connecting block and is mechanically connected to the first connecting block. The slide rail is mechanically connected to the third base. The slider is slidably connected to the slide rail to realize the first connecting block and the first positioning member to perform linear motion along the direction of the slide rail.

[0006] Furthermore, the sliding block is adapted to the cross-sectional shape of the sliding rail.

[0007] Optionally, it also includes: a second connecting block, through which the second cylinder is mechanically connected to the second base; the second connecting block is provided with a positioning groove, and the positioning groove is adapted to the shape of the workpiece for achieving support and positioning of the workpiece.

[0008] Furthermore, a positioning portion is provided at one end of the first positioning member, and the positioning portion is conical.

[0009] The utility model relates to a bidirectional centering positioning mechanism, and its beneficial effects are as follows: the bidirectional centering positioning mechanism provided by the utility model is simple and reasonable in design, and realizes simultaneous centering positioning and clamping of both sides of a workpiece by using two cylinders and two positioning members. The embodiment provided by the utility model has fast action response, low manufacturing cost, good economy, high positioning accuracy, and is easy to control automatically, adapts to user-specific needs, and can be used in manufacturing and assembly fields such as automobiles, ships, and aerospace. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present utility model, rather than limiting the present utility model.

[0011] Figure 1 One of the three-dimensional structural diagrams of a bidirectional centering and positioning mechanism provided in an embodiment of the utility model;

[0012] Figure 2 A second three-dimensional structural diagram of a bidirectional centering and positioning mechanism provided in an embodiment of the utility model;

[0013] Figure 3 A three-dimensional structural diagram of a slide rail and a slider provided in an embodiment of the utility model;

[0014] Figure 4 A three-dimensional structural diagram of a bidirectional centering and positioning mechanism with a workpiece provided in an embodiment of the utility model.

[0015] In the figure:

[0016] 1. First base; 2. Second base; 3. Third base; 4. First cylinder; 5. Second cylinder; 6. First positioning member; 601. Positioning portion; 7. Second positioning member; 8. First connecting block; 9. Second connecting block; 901. Positioning groove; 10. Slide rail; 11. Slider. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the usual meanings understood by persons with ordinary skills in the field to which the present disclosure belongs. It should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", "fourth", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0020] A bidirectional centering and positioning mechanism provided by an embodiment of the utility model is described in detail below in conjunction with the accompanying drawings.

[0021] Example

[0022] Figure 1 One of the three-dimensional structural diagrams of a bidirectional centering and positioning mechanism provided by an embodiment of the utility model is shown; Figure 2 The second three-dimensional structural diagram of a bidirectional centering and positioning mechanism provided by an embodiment of the utility model is shown; Figure 3 The three-dimensional structure diagram of the slide rail and the slider provided in the embodiment of the utility model is shown; Figure 4 The figure shows a three-dimensional structure diagram of a bidirectional centering and positioning mechanism with a workpiece provided by an embodiment of the utility model; Figure 1 to Figure 4As shown, the bidirectional centering positioning mechanism provided by the embodiment of the utility model is suitable for quickly positioning both sides of the workpiece at the same time and facilitating disassembly, so as to solve the problems of some workpieces being prone to shaking and low precision when positioned on one side. A bidirectional centering and positioning mechanism provided by an embodiment of the utility model comprises: a first base 1, a second base 2, a first cylinder 4, a second cylinder 5, a first positioning member 6, and a second positioning member 7, wherein the first cylinder 4 is mechanically fixed on the first base 1, thereby realizing the position fixation of the first cylinder 4, and the second cylinder 5 is mechanically fixed on the second base 2, thereby realizing the position fixation of the second cylinder 5, wherein the first cylinder 4 and the second cylinder 5 are arranged relatively to each other in the horizontal direction, and the piston rods in the first cylinder 4 and the second cylinder 5 can be linearly moved in opposite directions simultaneously or successively, and of course, the same direction movement can also be realized, and the specific action timing control and movement direction control of the first cylinder 4 and the second cylinder 5 can be realized by controlling the external control system, and the purpose of fast action response can be achieved by using the first cylinder 4 and the second cylinder 5, and the above-mentioned cylinders are widely used in the field of mechanical manufacturing and have good economy, which can reduce the cost of the bidirectional centering and positioning mechanism; wherein the first positioning member 6 is drivingly connected to the first cylinder 4 to realize the linear movement of the first positioning member 6, and the first positioning member 6 is connected to The piston rod in the first cylinder 4 can be directly connected or indirectly connected through other components, so that the first positioning member 6 can be synchronously realized to perform corresponding movement through the reciprocating linear motion of the piston rod in the first cylinder 4; similarly, the second positioning member 7 is drivingly connected to the second cylinder 5 to realize the linear motion of the second positioning member 7, and the second positioning member 7 is connected to the piston rod in the second cylinder 5, which can be directly connected or indirectly connected through other components, so that the second positioning member 7 can be synchronously realized to perform corresponding movement through the reciprocating linear motion of the piston rod in the second cylinder 5; it is worth noting that the first positioning member 6 and the second positioning member 7 are respectively placed on both sides of the workpiece and the central axes of the two are located on the same straight line to realize the bidirectional positioning, clamping and loosening actions of the workpiece, thereby ensuring the centering and positioning accuracy of the positioning hole on the workpiece; the control system is used to control the gas supply in the gas circuit to achieve the purpose of controlling the first cylinder 4 and the second cylinder 5 to perform corresponding actions, so as to synchronously realize the corresponding linear motion of the first positioning member 6 and the second positioning member 7; the embodiment of the utility model Figure 4The figure shows the positioning and clamping of a workpiece which is a local structure of the lower body of a certain type of automobile. Because the diameters and structures on both sides of the positioning hole are different, and the hole depth is shallow, single-sided positioning is difficult to meet the positioning accuracy requirements and the stability is not high. Therefore, a structural form in which the first positioning member 6 and the second positioning member 7 are used to position the workpiece on both sides at the same time, thereby improving the positioning accuracy and positioning stability of the workpiece. It is worth noting that the structural forms of the first positioning member 6 and the second positioning member 7 can be the same or different, and can be adjusted specifically according to the shape of the workpiece and user needs; if the structures on both sides of the positioning hole of the workpiece are the same, the corresponding first positioning member 6 and the second positioning member 7 can also adopt the same structural form; it is worth noting that the structural shapes of the first positioning member 6 and the second positioning member 7 can be adjusted accordingly according to the shape structure of the positioning hole on the workpiece.

[0023] In a bidirectional centering positioning mechanism provided in an embodiment of the utility model, as a further improvement, it also includes: a third base 3, a first connecting block 8, a slide rail 10, and a slider 11. The first positioning member 6 is drivingly connected to the first cylinder 4 through the first connecting block 8. The slider 11 is arranged below the first connecting block 8 and is mechanically connected to the first connecting block 8. The slide rail 10 is mechanically connected to the third base 3 and is arranged above the third base 3. The slider 11 is slidably matched with the slide rail 10 to realize the first connecting block 8 and the first positioning member 6 to perform linear motion together along the direction of the slide rail 10. Figure 1 A structural form of the first connecting block 8 is shown in FIG. 1 , including but not limited to the above structural form, Figure 1 The first connecting block 8 in the embodiment adopts a "concave" shaped structure, which saves materials; through the use of the third base 3, the first connecting block 8, the slide rail 10, and the slider 11, the problem of the large distance between the first cylinder 4 and the first positioning member 6 caused by the limitation of the space structure can be effectively solved, and the first positioning member 6 can be prevented from sagging or shaking and eventually causing the problem of reduced positioning accuracy, so that the first positioning member 6 can achieve accurate centering and positioning of the workpiece by using the high matching accuracy of the slide rail 10 and the slider 11. The slider 11 is adapted to the cross-sectional shape of the slide rail 10, and the cross-sectional shape of the slide rail 10 can be one of the following: dovetail, I-shaped, square, X-shaped, trapezoidal, including but not limited to the above cross-sectional shapes.

[0024] In a bidirectional centering and positioning mechanism provided in an embodiment of the utility model, as a further improvement, it also includes: a second connecting block 9, and the second cylinder 5 is mechanically connected to the second base 2 through the second connecting block 9; wherein the second connecting block 9 is provided with a positioning groove 901, and the positioning groove 901 is adapted to the shape of the workpiece for realizing the support and positioning of the workpiece, and at the same time can reduce the load-bearing capacity of the first positioning member 6 and the second positioning member 7 to ensure the positioning accuracy. By utilizing the positioning groove 901, the preliminary positioning of the workpiece can be realized, which is convenient for the subsequent use of the first positioning member 6 and the second positioning member 7 to realize precise centering and positioning; it is worth noting that the shape of the positioning groove 901 can be set to at least one of a curved surface, a plane or a special-shaped surface according to user needs, including but not limited to the above-mentioned surface types, as long as the positioning groove 901 is adapted to the shape of the workpiece.

[0025] In a bidirectional centering positioning mechanism provided in an embodiment of the utility model, as a further improvement, a positioning portion 601 is provided at one end of the first positioning member 6, and the positioning portion 601 is used to perform a positioning connection with the workpiece. The positioning portion 601 is conical. By using the conical positioning portion 601, it is easier to implement the introduction and centering of the first positioning member 6 and the workpiece, thereby facilitating the smooth introduction of the first positioning member 6, preventing the first positioning member 6 from being unable to extend into the positioning hole in the workpiece due to a centering error, and avoiding collision or even damage to the bidirectional centering positioning mechanism or parts on the workpiece.

[0026] Compared with the prior art, the bidirectional centering and positioning mechanism provided by the utility model is simple and reasonable in design. By using two cylinders and two positioning parts, simultaneous centering and clamping of both sides of the workpiece are achieved. The embodiment provided by the utility model has fast action response, low manufacturing cost, good economy, high positioning accuracy, and is easy to realize automatic control. It adapts to user-specific needs and can be used in manufacturing and assembly fields such as automobiles, ships, and aerospace.

[0027] There are a few points to note:

[0028] (1) Unless otherwise defined, in the embodiments of the present invention and the accompanying drawings, the same reference numerals represent the same meanings.

[0029] (2) The drawings of the embodiments of the present utility model only relate to the structures related to the embodiments of the present utility model, and other structures may refer to the conventional designs.

[0030] (3) For the sake of clarity, in the drawings used to describe the embodiments of the present invention, some structures in the drawings may be enlarged or reduced, that is, these drawings are not drawn according to the actual scale.

[0031] (4) In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0032] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A two-way centering and positioning mechanism, characterized in that: include: A first base (1), a second base (2), a first cylinder (4), a second cylinder (5), a first positioning member (6), and a second positioning member (7); the first cylinder (4) is mechanically fixed on the first base (1), and the second cylinder (5) is mechanically fixed on the second base (2); the first cylinder (4) and the second cylinder (5) are arranged opposite to each other in a horizontal direction; the first positioning member (6) is drivingly connected to the first cylinder (4) for realizing the linear movement of the first positioning member (6); the second positioning member (7) is drivingly connected to the second cylinder (5) for realizing the linear movement of the second positioning member (7); the first positioning member (6) and the second positioning member (7) are respectively arranged on two sides of a workpiece and their central axes are located on the same straight line for realizing bidirectional positioning, clamping and loosening of the workpiece.

2. The bidirectional centering and positioning mechanism according to claim 1, characterized in that: It also includes: a third base (3), a first connecting block (8), a slide rail (10), and a slider (11); the first positioning member (6) is drivingly connected to the first cylinder (4) through the first connecting block (8); the slider (11) is arranged below the first connecting block (8) and is mechanically connected to the first connecting block (8); the slide rail (10) is mechanically connected to the third base (3); the slider (11) is slidably connected to the slide rail (10) to realize the first connecting block (8) and the first positioning member (6) to perform linear motion along the direction of the slide rail (10).

3. The bidirectional centering and positioning mechanism according to claim 2, characterized in that: The sliding block (11) is adapted to the cross-sectional shape of the sliding rail (10).

4. The bidirectional centering and positioning mechanism according to any one of claims 1 to 3, characterized in that: Also includes: A second connecting block (9), the second cylinder (5) is mechanically connected to the second base (2) via the second connecting block (9); the second connecting block (9) is provided with a positioning groove (901), the positioning groove (901) is adapted to the shape of the workpiece and is used to achieve support and positioning of the workpiece.

5. The bidirectional centering and positioning mechanism according to claim 1, characterized in that: A positioning portion (601) is provided at one end of the first positioning member (6), and the positioning portion (601) is conical.

Images