An integrated hydraulic tooling clamp mechanism
The integrated hydraulic tooling clamping mechanism solves the problems of insufficient accuracy, high cost, long cycle and insufficient stability of traditional positioning tooling, and realizes high precision, low cost and rapid production of brackets.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU BUSUZHE MASCH MFG CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-08-04
AI Technical Summary
Traditional positioning fixtures suffer from insufficient accuracy, high cost, long cycle time, and insufficient stability, making it difficult to meet the high-precision processing requirements of precision products such as brackets.
The integrated hydraulic tooling clamping mechanism, through the casting of a single tooling body, combined with hydraulic cylinders and floating ball screws, achieves high-precision positioning and stable clamping of the bracket, eliminates splicing errors, reduces material and labor costs, and shortens the manufacturing cycle.
It achieves high-precision and stable positioning in bracket processing, reduces manufacturing costs, shortens the production cycle, improves processing quality and stability, and adapts to the needs of rapid production.
Smart Images
Figure CN224587854U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machining tooling technology, specifically to an integral hydraulic tooling clamping mechanism. Background Technology
[0002] In the case of Figure 1 When machining the bracket shown, it is necessary to position it in the X, Y, and Z directions. Traditional positioning fixtures often use a modular structure, assembled from multiple machined parts. For precision products such as brackets, high-precision positioning and stable clamping are essential during machining. However, traditional positioning fixtures have the following drawbacks:
[0003] 1. Precision defects: Traditional positioning fixtures assemble the cylinder seat, connecting plate, and side positioning points together. The assembly errors of the main components of the assembled fixture can easily lead to cumulative deviations, making it difficult to meet the positional accuracy requirements of high-precision machining, such as the positioning accuracy of the bracket positioning points and side positioning points.
[0004] 2. High cost: The cylinder seat, connecting plate, and side positioning points are all processed independently. Then, the components are assembled manually, which consumes a lot of materials and labor costs. In addition, the stability of the connection between the components needs to be checked repeatedly in the later stage, resulting in high maintenance costs.
[0005] 3. Long cycle: From the processing of individual parts to the overall debugging, the process is complicated and the production cycle usually lasts for several weeks, which cannot meet the needs of rapid production.
[0006] 4. Insufficient stability: Traditional clamping methods, such as mechanical bolt clamping, are easily affected by vibration, which can lead to problems such as warping and displacement during product processing, affecting the processing quality.
[0007] Therefore, there is an urgent need for a new type of hydraulic positioning machining tooling that can achieve high precision, low cost, and short cycle through integrated design. Utility Model Content
[0008] The problem to be solved is to develop a new type of hydraulic positioning and machining tooling with high precision, low cost, and short cycle through integrated design, which addresses the issues of insufficient precision, high cost, and long cycle of traditional spliced tooling.
[0009] To achieve the above objectives, this utility model provides the following technical solution: an integral hydraulic tooling clamping mechanism, comprising a tooling body integrally cast, the tooling body including a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate each integrally forming two hydraulic cylinder seats; a first side positioning unit and a second side positioning unit are also integrally formed on the tooling body; a separating positioning block is provided between the first side positioning unit and the second side positioning unit, the separating positioning block is located in the middle of the tooling body and anti-tilting fixing blocks are provided on both sides of the separating positioning block; a bracket positioning point is provided around the anti-tilting fixing block; a hydraulic cylinder is provided on the hydraulic cylinder seat, the output end of the hydraulic cylinder is connected to a floating ball screw, and the end of the floating ball screw has a protrusion in the output direction of the hydraulic cylinder.
[0010] Preferably, the anti-tilting fixing block includes a thin rib groove for engaging the thin rib of the bracket and a thick rib support block for supporting the outer side of the thick rib.
[0011] Preferably, the first side positioning unit and the second side positioning unit are respectively provided with a first adjusting bolt and a second adjusting bolt for fine adjustment of the side of the bracket.
[0012] Preferably, a limiting bolt is provided on the partition positioning block at a position opposite to the hydraulic cylinder. The limiting bolt and the output end of the hydraulic cylinder act on both sides of the pin hole of the bracket, and the force exerted by the limiting bolt and the hydraulic cylinder on the pin hole of the bracket is collinear.
[0013] Preferably, the first mounting plate is provided with an oil inlet and an oil outlet, which are respectively connected to each hydraulic cylinder.
[0014] Preferably, the bracket positioning points include three positioning points for positioning the bottom surface of the bracket, and the three positioning points form a triangle.
[0015] Compared with the prior art, this utility model provides an integral hydraulic tooling clamping mechanism, which has the following beneficial effects:
[0016] The integrated tooling structure enables high-precision and stable positioning of the bracket in the circlip groove machining process: the integrated structure eliminates splicing errors, and the positioning accuracy of the bracket machining is greatly improved compared with traditional tooling.
[0017] The hydraulic clamping unit achieves uniform clamping force, resulting in small fluctuation errors in the product during processing, thereby ensuring the dimensional accuracy of the product processing is ±0.08mm.
[0018] Significantly reduced costs: Reduced procurement and assembly costs of multiple components for modular tooling, improved material utilization, and lower manufacturing costs.
[0019] Shorter production cycle: From casting to delivery, it only takes 7-10 days, which is 60% shorter than the traditional splicing tooling cycle of 25-30 days, enabling rapid response to the needs of small-batch, multi-variety production. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the support structure involved in this utility model;
[0021] Figure 2 This is a schematic diagram of the main structure of the tooling involved in this utility model;
[0022] Figure 3 This is a schematic diagram of the structure of this utility model;
[0023] Figure 4 This is a schematic diagram illustrating the use of this utility model;
[0024] Figure 5 This is a schematic diagram of the floating ball screw involved in this utility model;
[0025] Figure 6 This is a schematic diagram of the anti-tilting fixing block involved in this utility model;
[0026] Explanation of reference numerals in the attached drawings: 1. Main body of the tooling; 11. Hydraulic cylinder seat one; 12. Hydraulic cylinder seat two; 13. Hydraulic cylinder seat three; 14. Hydraulic cylinder seat four; 15. First mounting plate; 16. Second mounting plate; 17. Reserved mounting seat for the pre-separated positioning block; 2. First side positioning unit; 21. First adjusting bolt; 3. Second side positioning unit; 31. Second adjusting bolt; 41. First hydraulic cylinder; 42. Second hydraulic cylinder; 43. Third hydraulic cylinder; 44. Fourth hydraulic cylinder; 45. Oil inlet; 46. Oil outlet; 5. Separated positioning block; 51. First limit bolt; 52. Second limit bolt; 53. Third limit bolt; 54. Fourth limit bolt; 6. Support positioning point; 7. Floating ball screw; 71. Protrusion; 8. Anti-warping fixing block; 81. Fine rib groove; 82. Coarse rib support block; 9. Support; 91. Support pin hole; 92. Fine rib; 93. Coarse rib. Detailed Implementation
[0027] The technical solutions of the present utility model will now be described with reference to the accompanying drawings in the embodiments of the present utility model:
[0028] To address the problems mentioned in the background art, this utility model provides an integrated hydraulic machining fixture for one-time casting. Through its integrated structural design and hydraulic clamping unit, it achieves high-precision positioning and clamping, reduces manufacturing costs, and shortens the production cycle. It is suitable for precision machining of complex products such as brackets. Figure 1 The diagram shows the structure of bracket 9, which needs to be positioned in the X, Y, and Z directions. Figures 2-4The integrated hydraulic tooling clamping mechanism shown includes a tooling body 1 formed by casting. The tooling body 1 includes a first mounting plate 15 and a second mounting plate 16. The first mounting plate 15 and the second mounting plate 16 are each integrally formed with two hydraulic cylinder seats. The first mounting plate 15 is integrally formed with hydraulic cylinder seat one 11 and hydraulic cylinder seat two 12, which are used to install the first hydraulic cylinder 41 and the second hydraulic cylinder 42. The second mounting plate 16 is integrally formed with hydraulic cylinder seat three 13 and hydraulic cylinder seat four 14, which are used to install the third hydraulic cylinder 43 and the fourth hydraulic cylinder 44, respectively. The first mounting plate 15 is provided with an oil inlet 45 and an oil outlet 46, which are respectively connected to each hydraulic cylinder. The tooling body 1 is also integrally formed with a first side positioning unit 2 and a second side positioning unit 3; a partition positioning block 5 is provided between the first side positioning unit 2 and the second side positioning unit 3, the partition positioning block 5 is located in the middle of the tooling body 1 and anti-tilting fixing blocks 8 are provided on both sides of the partition positioning block 5; a bracket positioning point 6 is provided around the anti-tilting fixing block 8; the output ends of the first hydraulic cylinder 41, the second hydraulic cylinder 42, the third hydraulic cylinder 43 and the fourth hydraulic cylinder 44 are all connected to floating ball screws 7, and the end of the floating ball screw 7 is provided with a protrusion 71 in the output direction of the hydraulic cylinder. When the hydraulic cylinder extends, the protrusion 71 is inserted into the bracket pin hole 91 of the bracket 9 to form a Z-direction positioning structure. Two support 9 processing stations on the main fixture 1 are separated by a partition positioning block 5. A hydraulic clamping unit consisting of a first hydraulic cylinder 41, a second hydraulic cylinder 42, a third hydraulic cylinder 43, and a fourth hydraulic cylinder 44, along with the partition positioning block 5, clamps and positions the supports 9 at the two stations in the X-direction. Limiting bolts are provided on the partition positioning block 5 at positions opposite to each hydraulic cylinder. The limiting bolts and the corresponding hydraulic cylinder outputs act on both sides of the support pin hole 91, and the forces exerted by the limiting bolts and hydraulic cylinders on the support pin hole 91 are collinear. A first side positioning unit 2 and a second side positioning unit 3 position the supports 9 in the Y-direction. A first adjusting bolt 21 and a second adjusting bolt 31 on the first side positioning unit 2 and the second side positioning unit 3 make fine adjustments to the position of the supports 9 in the Y-direction. Support positioning points 6 are provided on both stations. Each support positioning point 6 includes three positioning points for positioning the bottom surface of the supports 9, and these three positioning points form a triangle, achieving positioning of the supports 9 in the Z-axis direction. The anti-tilting fixing block 8 includes a fine rib groove 81 and a coarse rib support block 82. The fine rib groove 81 is used to insert the fine rib 92 of the bracket, and the inner side of the coarse rib support block 82 fits against the outer side of the support coarse rib 93 for limiting.
[0029] In one embodiment, the main body of the tooling 1 is made of high-strength aluminum alloy such as ADC6 through low-pressure casting in one piece, avoiding assembly errors of spliced structures. The main body of the tooling 1 is reverse-engineered based on the three-dimensional model of the bracket 9, integrating bracket positioning point 6, first side positioning unit 2, second side positioning unit 3, and reserved partition positioning block mounting seat 17. The reserved partition positioning block mounting seat 17 is located for installing partition positioning block 5, ensuring that the positioning surface is completely fitted with the product blank surface, realizing three-way positioning of X / Y / Z axes. The piston diameter of the first hydraulic cylinder 41, second hydraulic cylinder 42, third hydraulic cylinder 43, and fourth hydraulic cylinder 44 is φ20mm. The first hydraulic cylinder 41, second hydraulic cylinder 42, third hydraulic cylinder 43, and fourth hydraulic cylinder 44 are all model CX-SD40*20, the floating ball screw 7 is model PT35, and the bolt for fixing the cylinder is model ZFSMG16-50.
[0030] In use, the two brackets 9 are placed on the processing positions on both sides of the main body 1 of the fixture. The bottom surface of the bracket 9 is attached to the bracket positioning point 6. Since the bracket positioning point 6 is triangularly distributed, it can ensure stable surface contact. The thin rib 92 is inserted into the thin rib groove 81 of the anti-tilting fixing block 8, and the outer side of the thick rib 93 is attached to the thick rib support block 82 to form a Z-direction pre-constraint at the bottom of the bracket 9. The first adjusting bolt 21 and the second adjusting bolt 31 are manually pre-tightened so that the gap between the sides of the two brackets 9 and the first side positioning unit 2 and the second side positioning unit 3 is ≤0.5mm, forming a Y-direction pre-constraint. Positioning: The first hydraulic cylinder 41, second hydraulic cylinder 42, third hydraulic cylinder 43, and fourth hydraulic cylinder 44 are activated, acting coaxially with the first limit bolt 51, second limit bolt 52, third limit bolt 53, and fourth limit bolt 54 on the separating positioning block 5, respectively, to position the bracket 9 in the X-axis direction. The protrusions 71 of the four floating ball screws 7 are inserted into the bracket pin holes 91, with an insertion depth of less than or equal to 1mm, to achieve Z-axis limiting. The four hydraulic cylinders synchronously output clamping force, and the separating positioning block 5 bears bidirectional stress. After the two brackets 9 are cut, the pressure oil of the four hydraulic cylinders flows back through the oil outlet 46, the hydraulic cylinder piston rods retract, and the protrusions 71 of the four floating ball screws 7 exit the corresponding bracket pin holes 91. The machined brackets 9 can then be removed.
[0031] The above embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
Claims
1. An integral hydraulic tooling clamp mechanism characterized by: The fixture body (1) is cast in one piece. The fixture body (1) includes a first mounting plate (15) and a second mounting plate (16). The first mounting plate (15) and the second mounting plate (16) are each integrally formed with two hydraulic cylinder seats. The fixture body (1) is also integrally formed with a first side positioning unit (2) and a second side positioning unit (3). A partition positioning block (5) is provided between the first side positioning unit (2) and the second side positioning unit (3). The partition positioning block (5) is located in the middle of the fixture body (1) and anti-tilting fixing blocks (8) are provided on both sides of the partition positioning block (5). A bracket positioning point (6) is provided around the anti-tilting fixing block (8). A hydraulic cylinder is provided on the hydraulic cylinder seat. A floating ball screw (7) is connected to the output end of the hydraulic cylinder. The end of the floating ball screw (7) is provided with a protrusion (71) in the direction of hydraulic cylinder output.
2. The unit hydraulic tool clamping mechanism of claim 1 wherein: The anti-tilting fixing block (8) includes a thin rib groove (81) for inserting into the thin rib (92) of the bracket and a thick rib support block (82) for supporting the outer side of the thick rib (93).
3. The monoblock hydraulic clamp mechanism according to claim 1 or 2, wherein: The first side positioning unit (2) and the second side positioning unit (3) are respectively provided with a first adjusting bolt (21) and a second adjusting bolt (31) for fine adjustment of the side of the bracket (9).
4. The unit hydraulic tool clamping mechanism of claim 3 wherein: A limiting bolt is provided on the position opposite to the hydraulic cylinder on the separating positioning block (5). The limiting bolt and the output end of the hydraulic cylinder act on both sides of the bracket pin hole (91). The forces exerted by the limiting bolt and the hydraulic cylinder on the bracket pin hole (91) are collinear.
5. The unit hydraulic tool clamp mechanism as described in claim 1, further characterized by: The first mounting plate (15) is provided with an oil inlet (45) and an oil outlet (46), which are respectively connected to each hydraulic cylinder.
6. The monolithic hydraulic clamp mechanism of Claim 1, wherein: The bracket positioning point (6) includes three positioning points for positioning the bottom surface of the bracket (9), and the three positioning points form a triangle.