Unilateral power type centering jig

Abstract

The utility model discloses a unilateral power type centering jig which comprises a bottom plate, and a first moving seat and a second moving seat are installed on the bottom plate in a sliding and spaced mode through a sliding guide mechanism. A supporting seat for placing a product is arranged on the bottom plate between the movable seat I and the movable seat II; a sliding clamping piece and a fixed clamping piece which face the product are respectively arranged on the movable seat I and the movable seat II; the bottom plate is further provided with a force transmission mechanism, and the force transmission mechanism sequentially applies force to the first moving seat and the second moving seat, so that the sliding clamping piece and the fixed clamping piece move in the opposite or opposite directions in sequence. According to the centering device, the sliding clamping piece and the fixed clamping piece on the two sides are driven by single-side power to move, the sliding clamping piece and the fixed clamping piece can move in sequence, therefore, reliable and stable centering can be achieved by taking the fixed clamping piece as the datum of a product, and the centering device is simple, compact and ingenious in overall structure, high in applicability and good in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of non-standard centering fixtures, in particular to a single-side power centering fixture. Background Art

[0002] In actual production, processing, and assembly operations, fixtures and jigs are usually used to clamp and fix parts to facilitate further processing and assembly, or to meet the realization of automated operations.

[0003] In the prior art, for cylindrical parts, tubes, etc., centering requirements usually need to be met while clamping. For example, three-jaw centering is a commonly used clamping structure. On the one hand, the existing centering clamping structure is easy to clamp or even damage parts. On the other hand, the existing centering clamping structure has insufficient control over the repeatability of clamping. In addition, the overall size of the centering clamping structure is large and there are many parts, which is not conducive to the simultaneous clamping and use of multiple products. Utility Model Content

[0004] In order to solve the above problems, the present application provides a single-sided power centering fixture with a reasonable structure, thereby achieving the demand for stable and reliable centering and clamping of the product, and the overall structure is simplified, which is convenient for simultaneous centering and clamping of multiple holes, and has strong applicability and good applicability.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A single-side powered centering jig comprises a base plate, on which a movable seat 1 and a movable seat 2 are installed at a sliding interval via a sliding guide mechanism; a supporting seat for placing a product is installed on the base plate between the movable seat 1 and the movable seat 2, and a sliding clamp and a fixed clamp facing the product are respectively installed on the movable seat 1 and the movable seat 2; a force transmission mechanism is also installed on the base plate, and the force transmission mechanism applies force to the movable seat 1 and the movable seat 2 in turn, so that the sliding clamp and the fixed clamp move successively in opposite directions.

[0007] As a further improvement of the above technical solution:

[0008] The force transmission mechanism includes an S-shaped swing arm, which is rotatably installed on the bottom plate between the movable seat one and the movable seat two. Bearings are rotatably installed at both ends of the S-shaped swing arm, and the outer circumferential surfaces of the two bearings facing each other correspond to the facing sides of the movable seat one and the movable seat two respectively.

[0009] The bearings at both ends of the S-shaped swing arm are bearing one and bearing two respectively. One side of the outer circumferential surface of bearing one is arranged toward moving seat one. A trigger mechanism is installed on the bottom plate outside the other side of the outer circumferential surface of bearing one. The trigger mechanism pushes and applies force to bearing one to cause the S-shaped swing arm to rotate.

[0010] The distance between the bearing 1 and the side surface of the movable seat 1 is smaller than the distance between the bearing 2 and the side surface of the movable seat 2.

[0011] The structure of the trigger mechanism is as follows: it includes a moving bar slidably installed on the bottom plate, the length direction and the moving direction of the moving bar are parallel to the direction of the sliding guide mechanism, and a push block is installed at the end of the moving bar; a dynamic bearing is rotatably installed at the end of the push block, and the outer circumferential surface of the dynamic bearing is tangent to the outer circumferential surface of the bearing when contact force is applied.

[0012] The push block passes through the bottom of the second moving seat, a support block is installed on the top surface of the second moving seat, the top surface of the push block extends upward to form a convex arm, a guide rod penetrating the convex arm is installed on the support block, and an elastic body is sleeved on the guide rod located between the convex arm and the support block.

[0013] The movable seat is provided with a groove for the sliding clamp to be clamped and slid, and an elastic member is installed between the sliding clamp and the side wall of the groove.

[0014] A blocking bar is installed on a top surface of the movable seat, and the blocking bar spans over the sliding clamp.

[0015] An elastic reset mechanism is installed between the movable seat one, the movable seat two and the bottom plate; the structure of a single set of elastic reset mechanisms is: it includes a fixed block installed on the movable seat one or the movable seat two, a U-shaped seat with an opening facing the fixed block is installed on the bottom plate, a guide rod passing through the fixed block is installed on the U-shaped seat, and a spring is sleeved on the guide rod located between the U-shaped seat and the fixed block.

[0016] A static reference part is installed on the bottom plate between the moving seat 1 and the moving seat 2, and the static reference part is respectively provided with reference contacts facing the moving seat 1 and the moving seat 2; a moving limit part is installed on the bottom plate located on the outer sides of the moving seat 1 and the moving seat 2.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model has a compact and reasonable structure and is easy to operate. The force transmission mechanism sequentially applies force to the movable seat 1 and the movable seat 2, so that the sliding clamp and the fixed clamp move successively in opposite directions or opposite directions. It not only realizes that the sliding clamp and the fixed clamp on both sides are driven to move by a single-side power, but also enables the sliding clamp and the fixed clamp to move sequentially, so that the fixed clamp can be used as a reference for the product to achieve reliable and stable centering, and the centering repeatability is good. In addition, the overall structure of the fixture is simplified and ingenious, and the applicability is strong and the practicability is good.

[0019] The utility model also has the following advantages:

[0020] Through the correspondence between the bearings at both ends of the S-shaped swing arm and the moving seat 1 and the moving seat 2, and through the difference in distance setting, the swing of the S-shaped swing arm is used to cause the moving seat 1 and the moving seat 2 to start moving in sequence, so that when the sliding clamp and the fixed clamp are clamped toward each other or away from each other, the product can be maintained and guaranteed to be based on the fixed clamp, effectively ensuring the centering requirements and centering repeatability requirements of the product;

[0021] Through the setting of the trigger mechanism, the driving power outside the base plate can be transmitted through the trigger mechanism to make the S-shaped swing arm located in the middle of the base plate swing under force. The overall layout is compact, reasonable and ingenious. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0024] Figure 3 This is a schematic diagram of the installation of the force transmission mechanism and the trigger mechanism of the utility model on the bottom plate.

[0025] Figure 4 The utility model is a schematic diagram of the installation of the sliding clamp on the movable seat.

[0026] Figure 5 It is a structural schematic diagram of the elastic reset mechanism of the utility model.

[0027] Figure 6 It is a schematic diagram of the configuration of the static reference member of the utility model relative to the moving seat 1 and the moving seat 2.

[0028] Among them: 1. Bottom plate; 2. Elastic reset mechanism; 3. Sliding guide mechanism; 4. Moving seat 1; 5. Static reference part; 6. Support seat; 7. Moving seat 2; 8. Force transmission mechanism; 9. Trigger mechanism; 10. Product;

[0029] 11. Movable limiter; 12. Equal height column;

[0030] 21. U-shaped seat; 22. spring; 23. fixing block; 24. guide rod;

[0031] 40. groove; 41. sliding clamp; 42. stop bar; 43. elastic member;

[0032] 51. Reference contact;

[0033] 71. fixing clamp; 72. support block; 73. elastic body; 74. guide rod;

[0034] 81. Rotating support; 82. S-shaped swing arm; 83. Bearing 1; 84. Bearing 2;

[0035] 91. Push block; 92. Moving bar; 93. Moving bearing; 911. Protruding arm. DETAILED DESCRIPTION

[0036] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0037] like Figure 1 As shown, the unilateral dynamic centering fixture of this embodiment includes a base plate 1, on which a movable seat 1 4 and a movable seat 2 7 are installed at a sliding interval via a sliding guide mechanism 3; a supporting seat 6 for placing a product 10 is installed on the base plate 1 located between the movable seat 1 4 and the movable seat 2 7, and a sliding clamp 41 and a fixed clamp 71 facing the product 10 are respectively installed on the movable seat 1 4 and the movable seat 2 7; a force transmission mechanism 8 is also installed on the base plate 1, and the force transmission mechanism 8 applies force to the movable seat 1 4 and the movable seat 2 7 in turn, so that the sliding clamp 41 and the fixed clamp 71 move successively in opposite directions.

[0038] In this embodiment, the force transmission mechanism 8 can be used to apply force to the movable seat 1 4 and the movable seat 2 7 in sequence, so that the sliding clamp 41 and the fixed clamp 71 can move successively in opposite directions; not only can the sliding clamp 41 and the fixed clamp 71 on both sides be driven to move by a single-sided power, but the sliding clamp 41 and the fixed clamp 71 can also be moved in sequence, so that the fixed clamp 71 can be used as a reference for the product to achieve reliable and stable centering.

[0039] like Figure 3 As shown, the force transmission mechanism 8 includes an S-shaped swing arm 82, which is rotatably installed on the base plate 1 between the movable seat 1 4 and the movable seat 2 7. Bearings are rotatably installed at both ends of the S-shaped swing arm 82, and the outer circumferential surfaces of the two bearings facing each other correspond to the facing sides of the movable seat 1 4 and the movable seat 2 7 respectively.

[0040] In this embodiment, when the S-shaped swing arm 82 rotates relative to the base plate 1, the moving seat 1 4 and the moving seat 2 7 can be prompted to move through the contact, fit and compression of the bearings at both ends with the moving seat 1 4 and the moving seat 2 7, so as to achieve the movement of the moving seat 1 4 and the moving seat 2 7 on both sides by single-sided power.

[0041] The bearings at both ends of the S-shaped swing arm 82 are respectively bearing 1 83 and bearing 2 84. One side of the outer circumference of bearing 1 83 is arranged toward the moving seat 1 4. A trigger mechanism 9 is installed on the bottom plate 1 located outside the other side of the outer circumference of bearing 1 83. The trigger mechanism 9 pushes and applies force to bearing 1 83 to cause the S-shaped swing arm 82 to rotate.

[0042] In this embodiment, through the setting of the trigger mechanism 9, the driving power outside the base plate can be transmitted through the trigger mechanism 9 to make the S-shaped swing arm 82 located in the middle of the base plate 1 swing under force, and the overall layout is compact, reasonable and ingenious.

[0043] The distance between the bearing 1 83 and the side surface of the movable seat 1 4 is smaller than the distance between the bearing 2 84 and the side surface of the movable seat 2 7 .

[0044] In this embodiment, by the correspondence between the bearings at both ends of the S-shaped swing arm 82 and the movable seat 1 4 and the movable seat 2 7, and by the difference in distance setting, the swing of the S-shaped swing arm 82 is used to prompt the movable seat 1 4 and the movable seat 2 7 to start moving in sequence, so that when the sliding clamp 41 and the fixed clamp 71 are clamped toward each other or moved away from each other, the product 10 can be maintained and guaranteed to be based on the fixed clamp 71, thereby effectively ensuring the centering requirements and centering repeatability requirements of the product 10.

[0045] In actual use, the difference in the movement can be satisfied by adjusting the distance between the bearing and the movable seat 1 4 and the movable seat 2 7 .

[0046] Of course, according to actual use requirements, the distance between the bearing and the movable seat 1 4 can be set to be greater than the distance between the bearing and the movable seat 2 7. At this time, during the swing of the S-shaped swing arm 82, the movable seat 2 7, which is relatively close, will be subjected to force first.

[0047] In this embodiment, the middle portion of the S-shaped swing arm 82 is rotatably supported and installed on the middle portion of the top surface of the base plate 1 via a rotating support 81 .

[0048] The structure of the trigger mechanism 9 is as follows: it includes a moving bar 92 slidably mounted on the base plate 1, the length direction and the moving direction of the moving bar 92 are parallel to the direction of the sliding guide mechanism 3, and a push block 91 is installed at the end of the moving bar 92; a dynamic bearing 93 is rotatably mounted at the end of the push block 91, and the outer circumferential surface of the dynamic bearing 93 is tangentially fitted with the outer circumferential surface of the bearing 83 when contact force is applied.

[0049] In this embodiment, by moving the moving bar 92, the push block 91 moves, and the movable bearing 93 gradually approaches and contacts and applies force to the bearing 1 83, thereby pushing the S-shaped swing arm 82 to swing.

[0050] like Figure 2 As shown, the push block 91 passes through the bottom of the moving seat 2 7, and a support block 72 is installed on the top surface of the moving seat 2 7. The top surface of the push block 91 extends upward to form a protruding arm 911, and a guide rod 74 penetrating the protruding arm 911 is installed on the support block 72. An elastomer 73 is sleeved on the guide rod 74 located between the protruding arm 911 and the support block 72; the elastomer 73 helps the push block 91 to reset after moving.

[0051] like Figure 4As shown, a groove 40 is provided on the movable seat 4 for the sliding clamp 41 to be clamped and slid, and an elastic member 43 is installed between the sliding clamp 41 and the side wall of the groove 40.

[0052] During the movement of the movable seat 4 toward the product 10, the clamping surface of the sliding clamp 41 gradually approaches and contacts the outer wall of the product 10. As the movable seat 4 continues to move, the sliding clamp 41 generates an elastic buffer relative to the movable seat 4 via the elastic member 43. The elastic force of the elastic member 43 effectively ensures the close clamping of the sliding clamp 41 and the product 10, and effectively ensures that the product 10 can be tightly clamped with the fixed clamp 71 as a reference.

[0053] A baffle 42 is installed on the top surface of the moving seat 4, and the baffle 42 spans over the sliding clamp 41; the baffle 42 limits and guides the installation and sliding of the sliding clamp 41 relative to the moving seat 4, effectively ensuring smooth, smooth and repeatable sliding.

[0054] An elastic reset mechanism 2 is installed between the movable seat 1 4, the movable seat 2 7 and the bottom plate 1; Figure 5 As shown, the structure of the single-group elastic reset mechanism 2 is: it includes a fixed block 23 installed on the movable seat 1 4 or the movable seat 2 7, a U-shaped seat 21 with an opening toward the fixed block 23 is installed on the bottom plate 1, a guide rod 24 penetrating the fixed block 23 is installed on the U-shaped seat 21, and a spring 22 is sleeved on the guide rod 24 located between the U-shaped seat 21 and the fixed block 23.

[0055] After the trigger mechanism 9 is separated from the force transmission mechanism 8, the compressive elastic force of the elastic reset mechanism 2 will cause the movable seat 1 4, the movable seat 2 7 and the force transmission mechanism 8 to reset.

[0056] A static reference member 5 is installed on the bottom plate 1 between the moving seat 1 4 and the moving seat 2 7. Figure 6 As shown, the static reference member 5 is provided with reference contacts 51 facing the moving seat 1 4 and the moving seat 2 7 respectively; and a moving limit member 11 is installed on the bottom plate 1 located at the outer sides opposite to the moving seat 1 4 and the moving seat 2 7 .

[0057] In this embodiment, the contact between the movable seat 1 4 and the movable seat 2 7 and the reference contact 51 is used to realize the limiting of their relative movement, effectively ensuring the centering clamping of the product 10 with the fixed clamp 71 as the reference, and effectively preventing the excessive force clamping of the product 10 through the limiting of the relative movement, thereby effectively ensuring the stability and reliability of the clamping.

[0058] In this embodiment, the movable limiting member 11 limits the displacement of the movable seat 1 4 and the movable seat 2 7 moving away from each other.

[0059] In actual use, equal-height columns 12 may be arranged at intervals on the base plate 1, and a cover shell may be installed above the base plate 1 via the equal-height columns 12 to provide protection and dust prevention, and to enhance the aesthetic appearance of the centering fixture.

[0060] In actual use, multiple support seats 6 can be arranged at intervals on the base plate 1, and the movable seat 1 4 and the movable seat 2 7 are equipped with sliding clamps 41 and fixed clamps 71 corresponding to the support seats 6, so that they can be used for centering and clamping multiple products 10 at the same time, thereby improving the flexibility of use.

[0061] The usage of the utility model is:

[0062] 1) The process of the fixture switching from closed to open is:

[0063] When closed, the moving seat 1 4 and the moving seat 2 7 are located at the limit stop positions close to each other. At this time, the moving seat 1 4 and the moving seat 2 7 are both in contact with the reference contact 51 of the static reference member 5. In this state, the product 10 located in the support seat 6 is clamped with the sliding clamp 41 with the fixed clamp 71 as the reference.

[0064] When opening, the moving bar 92 is pushed inward, and the moving bearing 93 at the end of the push block 91 approaches, contacts and applies force to the bearing 1 83 at the end of the S-shaped swing arm 82, pushing the moving seat 1 4 outward through the bearing 1 83, thereby driving the sliding clamp 41 to move outward and separate from the product 10; as the moving bar 92 continues to be pushed, the S-shaped swing arm 82 continues to swing, and the end bearing 2 84 contacts and applies force to the moving seat 2 7 to make it move outward, and the fixed clamp 71 separates from the product 10, so that the product 10 clamped on both sides is opened. At this time, since the fixed clamp 71 serving as a reference separates from the product later than the sliding clamp 41, the opened product 10 remains in the center position of the support seat 6, and the product 10 can be taken away by an external robot.

[0065] In the open state, due to the outward movement of the movable seat 1 4 and the movable seat 2 7 , the elastic reset mechanism 2 is pressed and in a compressed state.

[0066] 2) The process of the fixture switching from open to closed is:

[0067] In the open state, the product 10 can be placed in;

[0068] When closing and centering, the moving bar 92 is pulled outward, the elastic reset mechanism 2 is elastically released, and the moving seat 2 7 is driven by the elastic reset mechanism 2 to move inward relative to the base plate 1, and the fixed clamp 71 moves toward the product 10 until the moving seat 2 7 is limited by the reference contact 51 of the static reference member 5; immediately after the moving seat 2 7, the moving seat 1 4 is driven by the corresponding elastic reset mechanism 2 to move inward relative to the base plate 1, and the sliding clamp 41 approaches and contacts the product 10, and finally when the moving seat 1 4 is limited by the reference contact 51 of the static reference member 5 and stops moving, the sliding clamp 41 presses the product 10 under the elastic force of the elastic member 43, driving the product 10 to be clamped and pressed with the fixed clamp 71 as the reference. At this time, the product 10 is located at the preset centering position.

[0069] The utility model is easy to operate and realizes reliable and stable centering by using the fixed clamp as the product reference under unilateral power, and the centering repeatability is good. The overall structure of the fixture is simplified and ingenious, and the applicability and practicality are good.

[0070] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0071] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A unilateral dynamic centering fixture, characterized in that: The invention comprises a bottom plate (1), on which a first movable seat (4) and a second movable seat (7) are installed at a sliding interval via a sliding guide mechanism (3); a supporting seat (6) for placing a product (10) is installed on the bottom plate (1) between the first movable seat (4) and the second movable seat (7); a sliding clamp (41) and a fixed clamp (71) facing the product (10) are installed on the first movable seat (4) and the second movable seat (7) respectively; a force transmission mechanism (8) is also installed on the bottom plate (1), and the force transmission mechanism (8) applies force to the first movable seat (4) and the second movable seat (7) in sequence, so that the sliding clamp (41) and the fixed clamp (71) move successively in opposite directions.

2. The unilateral dynamic centering fixture according to claim 1, characterized in that: The force transmission mechanism (8) comprises an S-shaped swing arm (82), which is rotatably mounted on a bottom plate (1) between the first moving seat (4) and the second moving seat (7), and bearings are rotatably mounted at both ends of the S-shaped swing arm (82), and the outer circumferential surfaces of the two bearings facing each other correspond to the side surfaces of the first moving seat (4) and the second moving seat (7) facing each other.

3. The unilateral dynamic centering fixture according to claim 2, characterized in that: The bearings at both ends of the S-shaped swing arm (82) are respectively a bearing 1 (83) and a bearing 2 (84); one side of the outer circumferential surface of the bearing 1 (83) is arranged toward the movable seat 1 (4); a trigger mechanism (9) is installed on the bottom plate (1) outside the other side of the outer circumferential surface of the bearing 1 (83); the trigger mechanism (9) pushes and applies force to the bearing 1 (83) to cause the S-shaped swing arm (82) to rotate.

4. The unilateral dynamic centering fixture according to claim 3, characterized in that: The distance between the bearing 1 (83) and the side surface of the movable seat 1 (4) is smaller than the distance between the bearing 2 (84) and the side surface of the movable seat 2 (7).

5. The unilateral dynamic centering fixture according to claim 3, characterized in that: The trigger mechanism (9) has a structure as follows: it comprises a moving bar (92) slidably mounted on the bottom plate (1); the length direction and the moving direction of the moving bar (92) are parallel to the direction of the sliding guide mechanism (3); a push block (91) is mounted at the end of the moving bar (92); a moving bearing (93) is rotatably mounted at the end of the push block (91); when contact force is applied, the outer circumferential surface of the moving bearing (93) is tangent to and fits with the outer circumferential surface of the bearing 1 (83).

6. The unilateral dynamic centering fixture according to claim 5, characterized in that: The push block (91) passes through the bottom of the second movable seat (7); a support block (72) is installed on the top surface of the second movable seat (7); the top surface of the push block (91) extends upward to form a convex arm (911); a guide rod (74) penetrating the convex arm (911) is installed on the support block (72); an elastic body (73) is sleeved on the guide rod (74) located between the convex arm (911) and the support block (72).

7. The unilateral dynamic centering fixture according to claim 1, characterized in that: The movable seat (4) is provided with a groove (40) for the sliding clamp (41) to be clamped and slid, and an elastic member (43) is installed between the sliding clamp (41) and the side wall of the groove (40).

8. The unilateral dynamic centering fixture according to claim 1, characterized in that: A blocking bar (42) is installed on the top surface of the movable seat (4), and the blocking bar (42) spans over the sliding clamp (41).

9. The one-sided dynamic centering fixture according to claim 1, characterized in that: An elastic reset mechanism (2) is installed between the movable seat 1 (4), the movable seat 2 (7) and the bottom plate (1); the structure of the single set of elastic reset mechanisms (2) is as follows: it comprises a fixed block (23) installed on the movable seat 1 (4) or the movable seat 2 (7); a U-shaped seat (21) with an opening facing the fixed block (23) is installed on the bottom plate (1); a guide rod (24) penetrating the fixed block (23) is installed on the U-shaped seat (21); and a spring (22) is sleeved on the guide rod (24) located between the U-shaped seat (21) and the fixed block (23).

10. The unilateral dynamic centering fixture according to claim 1, characterized in that: A static reference component (5) is installed on a bottom plate (1) located between the first moving seat (4) and the second moving seat (7), and the static reference component (5) is provided with reference contacts (51) facing the first moving seat (4) and the second moving seat (7), respectively; and a movable limiting component (11) is installed on the bottom plate (1) located on the outer sides opposite to the first moving seat (4) and the second moving seat (7).

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