Pneumatic double-station centering clamp

Abstract

The pneumatic double-station centering clamp comprises a centering base, centering grooves are formed in the upper sides of the two ends of the centering base, positioning clamping plates are arranged in the two centering grooves in a sliding mode through air cylinders, arc-shaped clamping grooves are formed in one sides of the positioning clamping plates, and clamping plate locking mechanisms are further arranged in the centering grooves. The two centering grooves are formed in the two upper sides of the centering base, the clamping plate locking mechanism comprises limiting sliding grooves formed in the inner walls of the centering grooves, locking pressing pieces are arranged in the limiting sliding grooves in an opposite sliding mode through lead screws, and the locking end faces of the locking pressing pieces are parallel to the outer walls of the two sides of the positioning clamping plates. And the two centering grooves are internally provided with the positioning clamping plates in a sliding mode through the air cylinders, so that the positioning clamping plates are driven by the air cylinders to move and adjust, two workpieces placed in the two centering grooves can be clamped and fixed at the same time, the clamping and fixing stability is high, and disassembly and assembly are convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of centering clamps, in particular to a pneumatic double-station centering clamp. Background Art

[0002] During machining, welding, assembly and other operations, when multiple workpieces located on the same axis need to be positioned and installed to ensure good coaxiality between the multiple workpieces, there are usually high requirements for the machining accuracy and installation matching relationship between the workpieces; or the coaxiality between the workpieces needs to be continuously adjusted with the help of auxiliary detection devices after installation to meet the coaxiality requirements.

[0003] The prior art discloses a pneumatic double-station centering fixture with application number 202321407291.7, which includes an upper die mechanism, a lower die base, and an auxiliary mechanism. The auxiliary mechanism includes a holding assembly, a clamping block, a pulling block, and a mounting block. The holding assembly is fixedly connected to the lower plate, the holding assembly is also fixedly connected to the clamping block, and the clamping block is fixedly connected to the connecting rod. By setting the mounting block and the lower plate into a detachable structure and then fixing the bolts to the mounting block, the problem of the bolts being unable to be removed from the lower plate due to thread slippage, breakage, and aging during use is effectively solved, thereby affecting the subsequent work progress. However, the stability of the workpiece clamping and centering is poor, and the clamping plate is easy to move, which affects the accuracy of the workpiece centering. Utility Model Content

[0004] The purpose of the utility model is to provide a pneumatic double-station centering fixture to solve the problem in the prior art that the stability of workpiece clamping and centering is poor and the clamping plate is easy to move, thereby affecting the accuracy of workpiece centering.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pneumatic double-station centering clamp, comprising a centering base, centering grooves are provided on the upper sides of both ends of the centering base, and positioning clamps are provided in the two centering grooves through the sliding of cylinders, an arc-shaped clamping groove is provided on one side of the positioning clamp, and a clamp locking mechanism is also provided in the centering groove, and the clamp locking mechanism includes a limiting slide groove provided on the inner wall of the centering groove, and a locking pressure plate is provided inside the limiting slide groove by sliding toward each other through a screw, and the locking end face of the locking pressure plate is arranged parallel to the outer walls of both sides of the positioning clamp.

[0006] Furthermore, mounting seats are provided at both ends of the centering base, and mounting holes are provided inside the mounting seats.

[0007] Furthermore, arc-shaped grooves are provided on the inner walls at both ends of the centering groove, and anti-slip pads are provided on the inner walls of the arc-shaped grooves of the positioning clamping plate.

[0008] Furthermore, the screw includes a screw rod rotatably arranged in the middle of the limiting slide groove, and two limiting slides are provided on the outer sides of both ends of the screw rod through two opposite sets of external threads. The locking pressure plate is vertically welded on the upper side of the limiting slide, and one end of the screw rod is transmission-connected to an electric motor.

[0009] Furthermore, contraction grooves are provided on both sides of the limiting sliding groove, and the locking pressing piece can be slidably arranged in the contraction grooves.

[0010] Furthermore, a locking tooth is provided on one side of the locking pressing plate, and a locking groove is provided on the outer side of the positioning clamping plate to cooperate with the locking tooth.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The utility model is provided with two centering grooves on both upper sides of the centering base, and positioning clamps are provided in the two centering grooves through the sliding arrangement of the cylinder, so that the positioning clamps are driven by the cylinder to move and adjust, and the two workpieces placed in the two centering grooves can be clamped and fixed at the same time, the clamping and fixing stability is high, and the disassembly and assembly are convenient and quick.

[0013] 2. The utility model also provides a clamping plate locking mechanism in the centering groove, and the clamping plate locking mechanism includes a limiting slide groove provided on the inner wall of the centering groove, and a locking pressure plate is provided inside the limiting slide groove to slide toward each other through a screw, and the locking end faces of the locking pressure plate are arranged parallel to the outer walls on both sides of the positioning clamping plate, so that the two locking pressure plates are driven by the screw to move toward each other and be adjusted and pressed on the outer sides of the two ends of the positioning clamping plate, so that the outer side of the clamped and fixed positioning clamping plate can be positioned, which is beneficial to improve the stability of the positioning clamping plate in clamping the workpiece.

[0014] 3. The utility model is provided with a locking tooth on one side of the locking pressure plate, and a locking groove which cooperates with the locking tooth is provided on the outside of the positioning splint. When the locking pressure plate is moved and the locking pressure plate is made to cooperate with the locking groove on the outside of the positioning splint, both sides of the positioning splint can be locked to prevent the positioning splint from moving due to misoperation of the cylinder, which is beneficial to further improve the stability of the positioning splint in clamping the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a top view of the centering structure of the utility model;

[0017] Figure 2 It is a top view of the overall structure of the utility model;

[0018] Figure 3This is the main view of the overall structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the positioning splint structure of the utility model;

[0020] Figure 5 It is an enlarged schematic diagram of the structure at point A of the present utility model.

[0021] In the figure: 1. Centering base; 2. Centering groove; 3. Mounting seat; 4. Positioning clamp; 5. Arc clamping groove; 6. Anti-slip pad; 7. Cylinder; 8. Locking groove; 9. Limit slide; 10. Retraction groove; 11. Motor; 12. Screw; 13. Limit slide; 14. Locking pressure piece; 15. Locking tooth; 16. Mounting hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 In the embodiment of the utility model, a pneumatic double-station centering clamp includes a centering base 1, and centering grooves 2 are opened on the upper sides of both ends of the centering base 1, and positioning clamps 4 are provided in the two centering grooves 2 through the sliding arrangement of cylinders 7. An arc-shaped clamping groove 5 is provided on one side of the positioning clamping plate 4, and an arc-shaped clamping groove 5 is provided on the inner wall of the two ends of the centering groove 2. The inner wall of the arc-shaped clamping groove 5 of the positioning clamping plate 4 is provided with an anti-slip pad 6, so that the two positioning clamping plates 4 are driven by the cylinder 7 to move toward each other and adjust, so that the two workpieces placed in the two centering grooves 2 can be clamped and fixed at the same time, the clamping and fixing stability is high, and the disassembly and assembly are convenient and quick.

[0024] like Figure 1 、 Figure 2 、 Figure 4 and Figure 5As shown, in order to improve the stability of the positioning splint 4 in clamping the workpiece, a splint locking mechanism is further provided in the centering groove 2, and the splint locking mechanism includes a limiting slide groove 9 provided on the inner wall of the centering groove 2, and a locking pressure piece 14 is provided inside the limiting slide groove 9 through the screw to slide toward each other, and the screw includes a screw rod 12 rotatably arranged in the middle of the limiting slide groove 9, and two limiting slides 13 are provided on the outer sides of the two ends of the screw rod 12 through two opposite sets of external threads, and the locking pressure piece 14 is vertically welded to the upper side of the limiting slide 13, and one end of the screw rod 12 is connected to the transmission The motor 11, and the locking end faces of the locking pressure piece 14 are arranged parallel to the outer walls on both sides of the positioning clamp 4, so that the two locking pressure pieces 14 are driven by the screw to move toward each other and adjust and are pressed on the outer sides of the two ends of the positioning clamp 4, so that the outer sides of the clamped and fixed positioning clamp 4 can be positioned, which is beneficial to improve the stability of the positioning clamp 4 in clamping the workpiece, and contraction grooves 10 are opened on both sides of the limiting slide 9, and the locking pressure piece 14 can be slidably set in the contraction groove 10, so that the locking pressure piece 14 can be stored in the contraction groove 10 when not in use.

[0025] like Figure 1 and Figure 2 , mounting seats 3 are provided at both ends of the centering base 1, and mounting holes 16 are provided inside the mounting seats 3 for fixing both ends of the centering base 1 with bolts.

[0026] like Figure 3 、 Figure 4 and Figure 5 As shown, in order to lock the two sides of the positioning splint 4, a locking tooth 15 is provided on one side of the locking pressure plate 14, and a locking groove 8 is provided on the outer side of the positioning splint 4 to cooperate with the locking tooth 15. When the locking pressure plate 14 is moved and the locking pressure plate 14 is inserted and cooperated with the locking groove 8 on the outside of the positioning splint 4, the two sides of the positioning splint 4 can be locked to prevent the positioning splint 4 from moving due to improper operation of the cylinder 7, which is beneficial to further improve the stability of the positioning splint 4 in clamping the workpiece.

[0027] The working principle and usage process of the utility model are as follows: when in use, a centering groove 2 is opened on the upper side of both ends of the centering base 1, and a positioning clamping plate 4 is slidingly set in the two centering grooves 2 through the cylinder 7, so that the two positioning clamping plates 4 are driven by the cylinder 7 to move toward each other and adjust, and the two workpieces placed in the two centering grooves 2 can be clamped and fixed at the same time, the clamping and fixing stability is high, and the disassembly and assembly are convenient and quick; and a clamping plate locking mechanism is also provided in the centering groove 2, so that the two locking pressure plates 14 are driven by the screw of the clamping plate locking mechanism to move toward each other and adjust and be pressed on the outside of the two ends of the positioning clamping plates 4, so that the outside of the clamped and fixed positioning clamping plates 4 can be positioned, which is beneficial to improving the stability of the positioning clamping plates 4 in clamping the workpieces.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A pneumatic double-station centering fixture, comprising a centering base (1), characterized in that: Centering grooves (2) are provided on the upper sides of both ends of the centering base (1), and positioning clamps (4) are provided in the two centering grooves (2) by sliding through cylinders (7), and an arc-shaped clamping groove (5) is provided on one side of the positioning clamp (4). A clamp locking mechanism is also provided in the centering groove (2), and the clamp locking mechanism includes a limiting slide groove (9) provided on the inner wall of the centering groove (2), and a locking pressure plate (14) is provided inside the limiting slide groove (9) to slide toward each other through a screw, and the locking end face of the locking pressure plate (14) is arranged parallel to the outer walls of both sides of the positioning clamp (4).

2. A pneumatic double-station centering fixture according to claim 1, characterized in that: Mounting seats (3) are provided at both ends of the centering base (1), and mounting holes (16) are provided inside the mounting seats (3).

3. The pneumatic double-station centering fixture according to claim 1, characterized in that: The inner walls of both ends of the centering groove (2) are provided with arc grooves, and the inner wall of the arc-shaped clamping groove (5) of the positioning clamping plate (4) is provided with anti-slip pads (6).

4. The pneumatic double-station centering fixture according to claim 1, characterized in that: The screw comprises a screw rod (12) rotatably arranged in the middle of a limiting slide groove (9), and two limiting slide seats (13) are provided on the outer sides of both ends of the screw rod (12) through two opposite sets of external threads, the locking pressing plate (14) is vertically welded to the upper side of the limiting slide seat (13), and one end of the screw rod (12) is transmission-connected to a motor (11).

5. The pneumatic double-station centering fixture according to claim 4, characterized in that: Contraction grooves (10) are provided on both sides of the position-limiting sliding groove (9), and the locking pressing piece (14) can be slidably arranged in the contraction groove (10).

6. The pneumatic double-station centering fixture according to claim 4, characterized in that: A locking tooth (15) is provided on one side of the locking pressing piece (14), and a locking groove (8) is provided on the outer side of the positioning clamping plate (4) for inserting and matching with the locking tooth (15).

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