Floating pressing tool
The floating clamping fixture solves the problem of unstable clamping of special-shaped structural surfaces through rotating connections and pad adjustment, achieving stable processing and cost reduction.
Patent Information
- Application Number
- CN202422487399.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-10-15
AI Technical Summary
Existing clamping tools are difficult to achieve stable clamping when processing special-shaped structural surfaces, and are prone to dislocation or offset, resulting in an unstable processing process. In addition, the processing of the profiling plate is difficult and costly.
A floating clamping fixture is used to achieve floating contact through the rotational connection between the first connecting block and the second connecting block and the rotational connection between the second pressing block and the second connecting block, adapting to the shape changes of the workpiece, and combined with the adjustment of the pad to achieve reliable clamping and fixation.
It achieves stable clamping of special-shaped structural surfaces, reduces processing difficulty and cost, reduces the processing requirements of profiling plates, and improves the stability and flexibility of the processing process.
Smart Images
Figure CN223313516U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of clamping tooling, in particular to a floating pressing tooling. Background Art
[0002] In the traditional machining field, the workpiece needs to be clamped and fixed before drilling, turning, milling and other operations can be performed. For parts whose clamping parts are special-shaped structural surfaces, they need to be designed with three-point clamping according to technical requirements. The existing clamping tooling uses a contoured pressure plate to ensure that the tooling and the workpiece have stable contact; but due to the shrinkage and deformation of the workpiece itself and the required tolerance range is larger than the tolerance range from the machining surface to the machining surface or from the machining surface to the blank surface, the contoured plates at the three clamping points cannot be completely fitted, and misalignment or even offset will occur during the machining process, which poses a hidden danger to the stability of the numerical values of the machining process. To address this problem, the existing contoured plates need to be ground by fitters so that most of the contoured plates are tightly pressed against the workpiece. This method requires strict control of the curvature of the curved surface, and the machining of the contoured plates is difficult, increasing the manufacturing cost. Summary of the Invention
[0003] In order to solve the problems existing in the prior art, the utility model provides a floating clamping tool, which can adapt to certain differences in the structural surfaces of the clamping parts and stably clamp and fix the workpiece.
[0004] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:
[0005] The utility model provides a floating pressing tool, including a first connecting block, a second connecting block, a first pressing block and a second pressing block; the first connecting block is provided with a first floating groove; the second connecting block is located in the first floating groove, the middle part of the second connecting block is rotatably connected to the first connecting block, and both ends of the second connecting block extend outward from the first floating groove; the first pressing block is fixed to one end of the second connecting block, and the other end of the second connecting block is provided with a second floating groove; the second pressing block is located in the second floating groove and the middle part of the second pressing block is rotatably connected to the second connecting block; the two ends of the second pressing block are respectively provided with a first pressing action part and a second pressing action part, and the first pressing action part and the second pressing action part both extend outward from the second floating groove.
[0006] In the above-mentioned floating pressing fixture, both ends of the first floating groove in the length direction are open, and both ends of the second connecting block extend out of the first floating groove from the openings at both ends of the first floating groove respectively.
[0007] In the above-mentioned floating pressing tooling, the first connecting block includes a first connecting body, the first floating groove is located at one end of the first connecting body, and first axial holes are provided on both groove walls of the first floating groove; the second connecting block is rotatably connected to the first connecting block through a first rotating shaft located in the first axial hole.
[0008] In the above-mentioned floating pressing fixture, the second connecting block includes a second connecting body, two connecting ears are provided at the end of the second connecting body, the second floating groove is formed between the two connecting ears, and second axial holes are respectively provided on the two connecting ears. The second pressing block is rotatably installed on the second connecting block through a second rotating shaft located in the second axial hole.
[0009] In the above-mentioned floating pressing tooling, a first adjustment groove is provided at the end of the second connecting body away from the second floating groove, and a first mounting hole is provided at the bottom of the first adjusting groove; the first pressing block is slidably arranged in the first adjusting groove and is adjustably connected to the second connecting body through an adjusting member located in the first mounting hole.
[0010] In the above-mentioned floating pressing tool, it also includes a pad, which includes a pad plate and at least one adjustment arm plate. The pad plate is located in the second floating groove, and the adjustment arm plate is fixedly connected to the pad plate and is adjustably connected to the second connector.
[0011] In the above-mentioned floating pressing tooling, an adjustment hole is provided on the second connecting body, and the adjustment hole is a long hole and the extension direction is the same as the depth direction of the second floating groove; a connecting hole is provided on the adjustment arm plate, and the pad is adjustably installed on the second connecting block through a connecting piece located in the connecting hole and the adjustment hole.
[0012] In the above-mentioned floating pressing fixture, the pad is connected to the two adjustment arm plates, the pad and the two adjustment arm plates are connected in a U shape, and the two adjustment arm plates are respectively located on both sides of the second connector.
[0013] The beneficial effects of the present invention are as follows:
[0014] The floating clamping fixture realizes floating contact between the first and second clamping blocks and the workpiece's clamping portion through the rotational connection between the first and second connecting blocks, thereby adapting to changes in the workpiece's shape due to machining tolerances or workpiece stress, and completing reliable and effective clamping and fixation of the workpiece.
[0015] The floating pressing fixture has a simple overall structure, high flexibility and is easy to use;
[0016] Compared with existing technologies, it can reduce the difficulty of workpiece production. There is no need to process and adjust the working surface of the contoured pressing plate according to the shape of the workpiece pressing part, saving labor.
[0017] The floating pressing tooling is wear-resistant and saves consumption of equipment and raw materials, thereby reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a structural diagram of the first embodiment of the floating pressing tool of the present utility model;
[0019] Figure 2 This is a schematic diagram of the first embodiment of the floating pressing tool of the utility model in use;
[0020] Figure 3 This is a structural diagram of the first connecting block in the first embodiment of the floating pressing fixture of the present invention;
[0021] Figure 4 This is a structural diagram of the second connecting block in the first embodiment of the floating pressing fixture of the present invention;
[0022] Figure 5 This is a structural diagram of the second pressing block in the first embodiment of the floating pressing fixture of the present invention;
[0023] Figure 6 This is a front view of the first embodiment of the floating pressing tool of the utility model;
[0024] Figure 7 This is a structural diagram of a second embodiment of the floating pressing tool of the present invention;
[0025] Figure 8 This is a schematic diagram of the assembly structure of the second connecting block and the cushion block in the second embodiment of the floating pressing fixture of the present invention;
[0026] Figure 9 This is a structural diagram of the second connecting block in the second embodiment of the floating pressing fixture of the present invention;
[0027] Figure 10 This is a structural diagram of a pad in the second embodiment of the floating pressing tool of the present invention.
[0028] In the picture:
[0029] 1-first connecting block; 11-first connecting body; 12-assembly hole; 13-first floating groove; 14-first shaft hole;
[0030] 2-second connecting block; 21-second connecting body; 22-third axial hole; 23-first adjustment slot; 24-first mounting hole; 25-connecting ear; 26-second floating slot; 27-second axial hole; 28-adjustment hole;
[0031] 3-first pressing block;
[0032] 4-second pressing block; 41-pressing block connector; 42-fourth axial hole; 43-first pressing portion; 44-second pressing portion;
[0033] 5-first rotating shaft; 6-second rotating shaft; 7-workpiece;
[0034] 8-pad; 81-pad; 82-adjusting arm plate; 83-connecting hole. DETAILED DESCRIPTION
[0035] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.
[0036] First, please refer to Figure 1 、 Figure 2 , which is an embodiment of the floating clamping fixture provided by the utility model, includes a first connecting block 1, a second connecting block 2, a first clamping block 3 and a second clamping block 4; the second connecting block 2 is rotatably connected to the first connecting block 1, the first clamping block 3 is fixedly mounted on the second connecting block 2, and the second clamping block 4 is rotatably mounted on the second connecting block 2. Among them, the end of the first clamping block 3 away from the second connecting block 2 forms a clamping point on the workpiece 7, and the second clamping block 4 forms two clamping points on the workpiece 7; the three clamping points are not in the same straight line, so that the floating clamping fixture and the workpiece 7 have three-point clamping, which can realize the clamping and fixing of the workpiece 7; at the same time, since the second clamping block 4 is rotatably mounted on the second connecting block 2 and the second connecting block 2 is rotatably connected to the first connecting block 1, the clamping of the floating clamping fixture at the three clamping points can float within a certain range, which can adapt to the clamping needs of workpieces 7 with different surface qualities.
[0037] like Figure 3 As shown, the first connecting block 1 includes a first connector 11, which is provided with a plurality of assembly holes 12 for direct or indirect connection with a power mechanism to clamp the workpiece 7 under the power mechanism's drive. A first floating groove 13 is provided on the first connector 11, preferably located at the end of the first connector 11. The first floating groove 13 is a U-shaped groove with both ends along its length being open. A first axial hole 14 is provided on both sides of the groove.
[0038] The second connecting block 2 is located in the first floating groove 13, the middle of the second connecting block 2 is rotatably connected to the groove wall of the first floating groove 13, and both ends extend out of the first floating groove 13. Figure 4 As one embodiment of the second connecting block 2, the second connecting block 2 includes a second connecting body 21, a third axial hole 22 being provided in the middle of the second connecting body 21. The second connecting block 2 and the first connecting block 1 are rotatably connected via a first rotating shaft 5 located within the first axial hole 14 and the third axial hole 22. The rotatable connection can be achieved by either a fixed connection between the second connecting block 2 and the first rotating shaft 5, with the first rotating shaft 5 being rotatable relative to the first axial hole 14, or a fixed connection between the first rotating shaft 5 and the first axial hole 14, with the second connecting block 2 being rotatable relative to the first rotating shaft 5. Both methods can achieve rotatable connection between the second connecting block 2 and the first connecting block 1.
[0039] A first adjustment slot 23 is defined at one end of the second connector 21, and a first mounting hole 24 is defined at the bottom of the first adjustment slot 23. The first pressure block 3 is slidably mounted within the first adjustment slot 23, and an adjustment member, such as a bolt or stud, is used within the first mounting hole 24 to achieve an adjustably connected connection between the first pressure block 3 and the second connecting block 2. For example, the first mounting hole 24 is a threaded hole, and the stud is threadedly engaged with the first mounting hole 24, with the end of the stud being rotatably connected to the first pressure block 3. Rotating the stud fine-tunes the distance between the first pressure block 3 and the bottom of the first adjustment slot 23, thereby adjusting the distance between the first pressure block 3 and the outer surface of the pressing point of the workpiece 7 to a certain extent to achieve an optimal pressing effect.
[0040] The other end of the second connector 21 is provided with two connecting ears 25, and a second floating groove 26 is formed between the two connecting ears 25. The two connecting ears 25 are respectively provided with a second axial hole 27. Figure 5 As shown, the second pressure block 4 includes a pressure block connector 41, and a fourth axial hole 42 is provided in the middle of the pressure block connector 41; a first pressing part 43 and a second pressing part 44 are provided at both ends of the pressure block connector 41, and the first pressing part 43 and the second pressing part 44 both protrude outward from the pressure block connector 41. The pressure block connector 41 is located in the second floating groove 26, and is rotatably mounted on the second connecting block 2 through the second rotating shaft 6 located in the second axial hole 27 and the fourth axial hole 42; the first pressing part 43 and the second pressing part 44 both protrude outward from the second floating groove 26. There is a gap between the pressure block connector 41 and the bottom wall of the second floating groove 26, so please refer to Figure 6 The second pressing block 4 can rotate by a set angle β relative to the second connecting block 2. Similarly, a gap exists between the second connector 21 and the bottom wall of the first floating groove 13, allowing the second connecting block 2 to rotate within a certain angle relative to the first connecting block 1. Both the second connecting block 2 and the second pressing block 4 can float and adjust within a certain range. The first and second pressing portions 43, 44, and the first pressing block 3 can adapt to the shape of the clamping surface of the workpiece 7, solving the problem of point-to-point auxiliary clamping. This makes this fixture suitable for clamping a variety of workpieces, eliminating the need to control surface accuracy and other issues. Simply select the right points and assemble the blocks.
[0041] For further information, please refer to Figure 7-10 The floating clamping fixture further includes a spacer block 8, which includes a backing plate 81 and at least one adjustment arm plate 82. The backing plate 81 is located within the second floating groove 26. The adjustment arm plate 82 is fixedly connected to the backing plate 81 and located outside the second floating groove 26. The adjustment arm plate 82 extends toward the second connector 21 and is adjustably connected to the second connector 21. Specifically, the second connector 21 is provided with an adjustment hole 28, which is an elongated hole extending in the same direction as the depth of the second floating groove 26. The adjustment arm plate 82 is provided with a connecting hole 83. The spacer block 8 is adjustably mounted on the second connecting block 2 via a combination of bolts and nuts located within the connecting hole 83 and the adjusting hole 28. When the spacer 8 is moved or adjusted toward the second pressure block 4, the rotation angle range of the second pressure block 4 is reduced; conversely, when the spacer 8 is moved or adjusted away from the second pressure block 4, the rotation angle range of the second pressure block 4 is expanded. When the spacer 8 is removed, the rotation angle range of the second pressure block 4 is maximized. The provision of the spacer 8 expands the application range of the tooling, allowing workpieces 7 of different models and sizes to be clamped.
[0042] Preferably, the pad 81 is connected to two adjustment arm plates 82, and the pad 81 and the two adjustment arm plates 82 are connected in a U shape. The two adjustment arm plates 82 are respectively located on both sides of the second connector 21. The two adjustment arm plates 82 can guide and limit the movement and adjustment of the pad 81.
[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements 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 floating pressing tool, characterized in that: The invention comprises a first connecting block (1), a second connecting block (2), a first pressing block (3) and a second pressing block (4); the first connecting block (1) is provided with a first floating groove (13); the second connecting block (2) is located in the first floating groove (13), the middle part of the second connecting block (2) is rotatably connected to the first connecting block (1), and both ends of the second connecting block (2) extend outward from the first floating groove (13); the first pressing block (3) is fixed to one end of the second connecting block (2), and the other end of the second connecting block (2) is provided with a second floating groove (26); the second pressing block (4) is located in the second floating groove (26), and the middle part of the second pressing block (4) is rotatably connected to the second connecting block (2); the two ends of the second pressing block (4) are respectively provided with a first pressing part (43) and a second pressing part (44), and both the first pressing part (43) and the second pressing part (44) extend outward from the second floating groove (26).
2. A floating pressing fixture according to claim 1, characterized in that: Both ends of the first floating groove (13) in the length direction are open, and both ends of the second connecting block (2) extend out of the first floating groove (13) from the openings at both ends of the first floating groove (13).
3. The floating pressing fixture according to claim 1, characterized in that: The first connecting block (1) comprises a first connecting body (11), the first floating groove (13) is located at one end of the first connecting body (11), and first axial holes (14) are provided on both groove walls of the first floating groove (13); the second connecting block (2) is rotatably connected to the first connecting block (1) via a first rotating shaft (5) located in the first axial hole (14).
4. The floating pressing fixture according to claim 1, characterized in that: The second connecting block (2) includes a second connecting body (21), two connecting ears (25) are provided at the end of the second connecting body (21), a second floating groove (26) is formed between the two connecting ears (25), and a second axial hole (27) is provided on the two connecting ears (25), respectively. The second pressing block (4) is rotatably mounted on the second connecting block (2) via a second rotating shaft (6) located in the second axial hole (27).
5. The floating pressing fixture according to claim 4, characterized in that: The second connecting body (21) is provided with a first adjusting groove (23) at an end away from the second floating groove (26), and a first mounting hole (24) is provided at the bottom of the first adjusting groove (23); the first pressing block (3) is slidably arranged in the first adjusting groove (23) and is adjustably connected to the second connecting body (21) through an adjusting member located in the first mounting hole (24).
6. The floating pressing fixture according to claim 4, characterized in that: The invention also includes a cushion block (8), wherein the cushion block (8) includes a cushion plate (81) and at least one adjustment arm plate (82), wherein the cushion plate (81) is located in the second floating groove (26), and the adjustment arm plate (82) is fixedly connected to the cushion plate (81) and is adjustably connected to the second connector (21).
7. The floating pressing fixture according to claim 6, characterized in that: The second connecting body (21) is provided with an adjustment hole (28), and the extension direction of the adjustment hole (28) is the same as the depth direction of the second floating groove (26); the adjustment arm plate (82) is provided with a connection hole (83), and the cushion block (8) is adjustably mounted on the second connecting block (2) through a connecting piece located in the connection hole (83) and the adjustment hole (28).
8. The floating pressing fixture according to claim 6, characterized in that: The pad (81) is connected to the two adjustment arm plates (82), and the pad (81) and the two adjustment arm plates (82) are connected in a U shape. The two adjustment arm plates (82) are respectively located on both sides of the second connector (21).