CN216759041U

CN216759041U - Centering fixture and production line thereof

Info

Publication number: CN216759041U
Application number: CN202220285607.9U
Authority: CN
Inventors: 张晨宇; 高超; 王健
Original assignee: Sany Robot Technology Co Ltd
Current assignee: Sany Robot Technology Co Ltd
Priority date: 2022-02-11
Filing date: 2022-02-11
Publication date: 2022-06-17
Anticipated expiration: 2032-02-11

Abstract

The utility model relates to the technical field of tool clamping, in particular to a centering clamping mechanism and a production line thereof. The driving piece drives the commutator to work, the first screw rod and the second screw rod synchronously rotate under the driving of the commutator, so that the first clamping block and the second clamping block oppositely or oppositely move to achieve the effect of clamping or loosening.

Description

Centering fixture and production line thereof

Technical Field

The utility model relates to the technical field of tool clamping, in particular to a centering clamping mechanism and a production line thereof.

Background

In the mechanical centering clamping tool, a pneumatic connecting rod structure or a central gear structure with a bidirectional rack is commonly adopted.

As for the pneumatic connecting rod structure, the pneumatic connecting rod structure is not suitable for occasions with higher requirement on positioning precision and larger size change of workpieces due to the influence of air pressure stability and the size influence of the connecting rod.

The bidirectional rack structure with the central gear is suitable for occasions with stable centering clamping environment and short rack opening distance, and if frequent vibration occurs or the rack opening distance is long, the teeth are easy to jump, and the repeated positioning precision is influenced.

Therefore, a centering mechanism is needed to provide a high precision of repeated positioning.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to overcome the defect of low repeated positioning precision in the prior art, and provide a centering clamping mechanism and a production line thereof.

In order to solve the above problems, the present invention provides a centering clamping mechanism, comprising: a drive member; the commutator is connected to the driving piece; the first screw rod is connected to the first end of the commutator, and a first clamping block is arranged on the first screw rod; the second screw rod is connected to the second end of the commutator, and a second clamping block is arranged on the second screw rod; the commutator is suitable for driving the first screw rod and the second screw rod to synchronously rotate so as to enable the first clamping block and the second clamping block to move oppositely or reversely.

Optionally, a first guide rail is arranged on a side portion of the first screw rod, the first guide rail is arranged in parallel with the first screw rod, and the first clamping block is in sliding fit with the first guide rail; and/or a second guide rail is arranged on the side part of the second lead screw, the second guide rail is arranged in parallel with the second lead screw, and the second clamping block is in sliding fit with the second guide rail.

Optionally, the number of the first guide rails is two, the two first guide rails are respectively located at two sides of the first screw rod, in a direction perpendicular to the first screw rod, two sides of the first clamping block are provided with extending portions, and the two extending portions are respectively in sliding fit with the two first guide rails.

Optionally, a first sliding block is arranged on the first guide rail, and the extending portion is connected with the first sliding block.

Optionally, the number of the second guide rails is two, the two second guide rails are respectively located at two sides of the second screw rod, in a direction perpendicular to the second screw rod, two sides of the second clamping block are provided with extending portions, and the two extending portions are respectively in sliding fit with the two second guide rails.

Optionally, a second sliding block is arranged on the second guide rail, and the extending portion is connected with the second sliding block.

Optionally, a shield is disposed outside the first guide rail and/or the second guide rail.

Optionally, the reversing mechanism further comprises a first mounting plate and a second mounting plate, wherein the first end of the reverser is fixedly connected with the first mounting plate, and the first screw rod is arranged on the first mounting plate; the second end and the second mounting panel fixed connection of commutator, the second lead screw sets up on the second mounting panel.

Optionally, the first lead screw and the second lead screw are both T-shaped lead screws.

The utility model also provides a production line which comprises the centering and clamping mechanism.

The utility model has the following advantages:

1. the T-shaped screw rod is adopted in the scheme, has good physical self-locking performance, and can ensure the clamping stability and higher repeated positioning precision of the centering mechanism;

2. the commutator is used for driving the T-shaped screw rods at two ends to synchronously move, so that the first clamping block and the second clamping block oppositely or oppositely move to achieve a good clamping effect;

3. the centering mechanism is driven by a servo motor, the opening and closing positions of the centering mechanism can be accurately controlled according to actual use requirements, and the centering mechanism is flexible and compatible with workpieces of various sizes;

4. the servo motor is matched with the commutator, and one power source is used for driving the mechanisms on two sides, so that the design cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 shows an overall schematic view of a centering fixture of an embodiment of the present invention;

FIG. 2 shows a schematic view of a centering fixture unsheathing of an embodiment of the present invention;

fig. 3 shows an exploded view of a first moving assembly of an embodiment of the present invention.

Description of reference numerals:

1. a drive member; 2. a commutator; 3. a first mounting plate; 4. a second mounting plate; 5. a first moving assembly; 6. a second moving assembly; 7. a first guide rail; 8. a second guide rail; 9. a shield; 31. a first lead screw; 32. a first bearing housing; 33. a first coupling; 41. a second lead screw; 42. a second bearing housing; 43. a second coupling; 51. a first clamping block; 52. a first movable base; 53. a first connecting plate; 54. a first fixing plate; 61. a second clamping block; 62. a second movable base; 63. a second connecting plate; 64. a second fixing plate; 71. a first slider; 81. a second slider; 91. and a support plate.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1, 2 and 3, the utility model discloses a centering clamping mechanism, which comprises a driving part 1 and a commutator 2 arranged on the driving part 1, wherein a first screw rod 31 and a second screw rod 41 are respectively arranged at two ends of the commutator 2, the first screw rod 31 and the second screw rod 41 are both T-shaped screw rods, a first moving assembly 5 is connected to the first screw rod 31, and the first moving assembly 5 comprises a first clamping block 51; the second screw 41 is connected with a second moving assembly 6, and the second moving assembly 6 comprises a second clamping block 61. When the driving element 1 drives the commutator 2 to work, the commutator 2 drives the first screw rod 31 and the second screw rod 41 to rotate, and the first clamping block 51 and the second clamping block 61 are close to or far away from each other, so that the clamping or loosening effect is formed. The T-shaped screw rod has good physical self-locking performance, and the clamping stability and high repeated positioning precision of the centering mechanism are ensured.

The driving member 1 is a motor, and further, a servo motor, which can provide precise control. The driving member 1 is disposed below the commutator 2 and connected to a bottom end of the commutator 2. Centering fixture still includes first mounting panel 3 and second mounting panel 4, and the both ends of commutator 2 are fixed respectively on first mounting panel 3 and second mounting panel 4, and the preferred bolted connection of fixed mode. The effect of first mounting panel 3 and second mounting panel 4 mainly plays a bearing role, and in this scheme, first mounting panel 3 and second mounting panel 4 divide into two square boards, and in another kind of implementation, first mounting panel 3 and second mounting panel 4 also can close into a whole board.

Two first bearing seats 32 are arranged on the first mounting plate 3 side by side, the two first bearing seats 32 are fixed on the upper surface of the first mounting plate 3 through bolts, the two first bearing seats 32 are arranged on one side of the first end of the commutator 2, and two ends of the first lead screw 31 are respectively arranged in the first bearing seats 32. A first coupling 33 is further arranged between the first screw rod 31 and the commutator 2, and the end part of the first screw rod 31 is connected with the output shaft of the commutator 2 through the first coupling 33.

The first moving assembly 5 further includes a first moving base 52, a first connecting plate 53 and a first fixing plate 54, the first moving base 52 is disposed on the first lead screw 31, and the first lead screw 31 rotates to drive the first moving base 52 to move in the horizontal direction, far away from or close to the commutator 2. The first connecting plate 53 is fixed on the first moving seat 52, the first fixing plate 54 is connected on the first connecting plate 53, and the first clamping block 51 is fixed on the first fixing plate 54, and the fixing modes are all bolt connection. In another embodiment, the first connecting plate 53, the first fixing plate 54 and the first clamping block 51 may be integrally formed or welded together. That is, the first connecting plate 53, the first fixing plate 54 and the first clamping block 51 are combined to form an extension of the first clamping block 51 as a whole.

In order to improve the motion stability of the first clamping block 51, the first mounting plate 3 is further provided with two first guide rails 7, the first guide rails 7 can be fixed on the substrate through bolts, the number of the first guide rails 7 is two, the two first guide rails 7 are respectively arranged on two sides of the first screw rod 31, and the two first guide rails 7 are both arranged in parallel with the first screw rod 31. Each first guide rail 7 is provided with a first sliding block 71, two ends of the first connecting plate 53 extend to the corresponding first sliding blocks 71 respectively, and the first connecting plate 53 and the corresponding first sliding blocks 71 are fixedly connected through bolts. Thus, when the first moving member 5 moves, the first guide rails 7 on both sides further improve the guiding function and improve the stability of the movement.

The second screw 41 is arranged in the same manner as the first screw 31, two second bearing seats 42 are arranged on the second mounting plate 4 side by side, the two second bearing seats 42 are fixed on the upper surface of the second mounting plate 4 through bolts, the two second bearing seats 42 are arranged on one side of the commutator 2, and two ends of the second screw 41 are respectively arranged in the second bearing seats 42. A second coupling 43 is further arranged between the second screw rod 41 and the commutator 2, and the end part of the second screw rod 41 is connected with the output shaft of the commutator 2 through the second coupling 43.

The second moving assembly 6 further comprises a second moving base 62, a second connecting plate 63 and a second fixing plate 64, the second moving base 62 is arranged on the second lead screw 41, and the second lead screw 41 rotates to drive the second moving base 62 to move in the horizontal direction, far away from or close to the commutator 2. The second connecting plate 63 is fixed on the second moving seat 62, the second fixing plate 64 is connected on the second connecting plate 63, and the second clamping block 61 is fixed on the second fixing plate 64, and the fixing modes are all bolt connections. In another embodiment, the second connecting plate 63, the second fixing plate 64 and the second clamping block 61 may also be integrally formed or welded together. That is, the second connecting plate 63, the second fixing plate 64 and the second clamping block 61 are combined to form an extension of the second clamping block 61.

In order to improve the motion stability of the second clamping block 61, a second guide rail 8 is further arranged on the second mounting plate 4, the second guide rail 8 can be fixed on the second mounting hole through bolts, the number of the second guide rails 8 is two, the two second guide rails 8 are respectively arranged on two sides of the second screw rod 41, and the two second guide rails 8 are both arranged in parallel with the second screw rod 41. Every second guide rail 8 all is equipped with second slider 81, and the both ends of second connecting plate 63 are stretched to respectively on corresponding second slider 81, through bolt with second connecting plate 63 and corresponding second slider 81 fixed connection. Thus, when the second moving assembly 6 moves, the second guide rails 8 on both sides further improve the guiding function and the stability of the movement.

In order to reduce the pollution of the first guide rail 7 and the second guide rail 8, the first guide rail 7 and the second guide rail 8 are respectively provided with a shield 9, and the shields 9 shield the first guide rail 7 and the second guide rail 8 to reduce dust. The arrangement of the shield 9 is the same at the first guide rail 7 and the second guide rail 8, and the arrangement of the shield 9 will be described by taking the first guide rail 7 as an example, specifically, a pair of support plates 91 are arranged on the first mounting plate 3, the pair of support plates 91 are respectively arranged at two ends of the first guide rail 7 in the axial direction, and the support plates 91 are fixed at the bottom of the first mounting plate 3 by bolts. The protective cover 9 is a square thin plate, the corresponding first guide rail 7 is coated on the side surface and the top surface, a bolt is further arranged between the protective cover 9 and the supporting plate 91, and the bolt penetrates downwards from the top, penetrates through the protective cover 9 and is fixedly connected with the top wall of the corresponding supporting plate 91.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. A centering fixture which characterized in that: the method comprises the following steps:

a driver (1);

the commutator (2) is connected to the driving piece (1);

the first screw rod (31) is connected to the first end of the commutator (2), and a first clamping block (51) is arranged on the first screw rod (31);

the second screw rod (41) is connected to the second end of the commutator (2), and a second clamping block (61) is arranged on the second screw rod (41);

wherein the commutator (2) is suitable for driving the first screw rod (31) and the second screw rod (41) to synchronously rotate so as to enable the first clamping block (51) and the second clamping block (61) to move towards or away from each other.

2. The centering gripping mechanism of claim 1, wherein: a first guide rail (7) is arranged on the side of the first screw rod (31), the first guide rail (7) and the first screw rod (31) are arranged in parallel, and the first clamping block (51) is in sliding fit with the first guide rail (7); and/or a second guide rail (8) is arranged on the side part of the second lead screw, the second guide rail (8) and the second lead screw (41) are arranged in parallel, and the second clamping block (61) is in sliding fit with the second guide rail (8).

3. The centering gripping mechanism of claim 2, wherein: the number of the first guide rails (7) is two, the two first guide rails (7) are respectively located on two sides of the first screw rod (31), extending portions are arranged on two sides of the first clamping block (51) in the direction perpendicular to the first screw rod (31), and the two extending portions are respectively in sliding fit with the two first guide rails (7).

4. The centering gripping mechanism of claim 3, wherein: and a first sliding block (71) is arranged on the first guide rail (7), and the extension part is connected with the first sliding block (71).

5. The centering gripping mechanism of claim 2, wherein: the number of the second guide rails (8) is two, the two second guide rails (8) are respectively located on two sides of the second screw rod (41), extension portions are arranged on two sides of the second clamping block (61) in the direction perpendicular to the second screw rod (41), and the two extension portions are respectively in sliding fit with the two second guide rails (8).

6. The centering gripping mechanism of claim 5, wherein: and a second sliding block (81) is arranged on the second guide rail (8), and the extension part is connected with the second sliding block (81).

7. The centering gripping mechanism of claim 2, wherein: a shield (9) is arranged outside the first guide rail (7) and/or the second guide rail (8).

8. The centering gripping mechanism of claim 1, wherein: the commutator comprises a commutator body (2) and is characterized by further comprising a first mounting plate (3) and a second mounting plate (4), wherein the first end of the commutator body (2) is fixedly connected with the first mounting plate (3), and the first screw rod (31) is arranged on the first mounting plate (3); the second end and the second mounting panel (4) fixed connection of commutator (2), second lead screw (41) set up on second mounting panel (4).

9. The centering gripping mechanism of any one of claims 1 to 8, wherein: the first screw rod (31) and the second screw rod (41) are both T-shaped screw rods.

10. A production line, characterized in that: comprising a centering gripping mechanism according to any one of claims 1 to 9.