Four-axis machining clamp for left side beam and right side beam

Abstract

The utility model provides a four-axis machining clamp for a left side beam and a right side beam, and aims to efficiently and accurately position and clamp the left side beam and the right side beam, so that multi-surface machining can be completed through one-time clamping on a CNC machining center. The device comprises a base and a spindle box arranged on the base, a base plate is fixedly arranged at the output end of the spindle box, the other end of the base plate is connected with a driven rotating assembly, the length of the base plate is larger than that of a workpiece, and a positioning block set, a first clamping air cylinder set, a second clamping air cylinder set and a positioning air cylinder set are arranged on the base plate. The positioning block sets are arranged at intervals along the base plate, the first clamping air cylinder set is arranged on one side of the positioning block sets, the second clamping air cylinder set penetrates through the base plate and is arranged below the base plate, and the positioning air cylinder sets are arranged on the side, close to the spindle box and the driven rotating assembly, of the base plate. The utility model relates to the technical field of tool clamps.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a four-axis machining fixture for left and right side beams. Background Art

[0002] In the field of modern machining, fixtures are important bridges connecting machine tools and workpieces. Their design and application are directly related to machining accuracy and production efficiency. Among them, four-axis fixtures, as an efficient and precise clamping tool, play an important role in various machining scenarios, especially in the multi-faceted machining of complex parts. However, with the continuous improvement of the manufacturing industry's requirements for machining accuracy and production efficiency, traditional fixture technology is facing challenges.

[0003] When machining workpieces in a CNC machining center, especially for workpieces with special structures such as left and right side beams, multiple clamping is often required to complete the machining of different surfaces. This not only increases the complexity of the operation, but also easily leads to the accumulation of positioning errors, affecting the machining quality and consistency of the final product.

[0004] Therefore, in view of the limitations of existing fixture technology and the needs of processing special workpieces such as left and right side beams, it is imperative to develop a new type of four-axis fixture - a four-axis processing fixture for left and right side beams. Utility Model Content

[0005] To achieve the above-mentioned purpose, the utility model provides a four-axis machining fixture for left and right side beams, which aims to realize efficient and precise positioning and clamping of the left and right side beams, so that multi-sided machining can be completed in one clamping on the CNC machining center, greatly improving machining efficiency, and effectively reducing positioning errors, thereby improving product machining quality and consistency.

[0006] The technical solution adopted by the utility model is: a four-axis machining fixture for left and right side beams, comprising a base and a spindle box arranged on the base, a base plate is fixedly arranged at the output end of the spindle box, the other end of the base plate is connected to a driven rotating component, the length of the base plate is greater than the length of the workpiece, a positioning block group, a first clamping cylinder group, a second clamping cylinder group and a positioning cylinder group are arranged on the base plate, the positioning block groups are arranged at intervals along the base plate, the first clamping cylinder group is arranged on one side of the positioning block group, the second clamping cylinder group passes through the base plate and is arranged below the base plate, and the positioning cylinder group is arranged on one side of the base plate close to the spindle box and the driven rotating component respectively.

[0007] Based on the above technical solution, the utility model realizes efficient and accurate positioning and clamping of the left and right side beams by rationally arranging the components, provides a basis for completing multi-faceted processing in one clamping, helps to improve processing efficiency and reduce positioning errors.

[0008] Furthermore, the positioning block group includes a reference block, a first supporting block and a second supporting block, and the reference block, the first supporting block and the second supporting block are each provided in at least two numbers. When placing a blank workpiece, the reference block is fitted with the side surface of the workpiece, the first supporting block is fitted with the convex bottom surface of the workpiece, and the second supporting block is fitted with the concave bottom surface of the workpiece.

[0009] Based on the design of the positioning block group, the utility model can adapt to workpieces of different shapes, thereby improving the versatility and flexibility of the fixture.

[0010] Furthermore, the first clamping cylinder group includes at least two lifting cylinders and is arranged on both sides of the workpiece fixing position of the substrate. The output end of the lifting cylinder is provided with a pressure head. When clamping the workpiece, the lifting cylinder descends, and the pressure heads on both sides respectively press the convex top surface and the concave top surface of the workpiece.

[0011] Based on the design of the first clamping cylinder group, the utility model realizes multi-point clamping of the workpiece, improves the stability and reliability of the clamping, and ensures the accuracy and safety during the processing.

[0012] Furthermore, the second clamping cylinder group includes at least two push-pull cylinders and are arranged below the base plate through a connecting plate. The output end of the push-pull cylinder is hinged with a rocker passing through the base plate. The middle part of the rocker is also provided with a short shaft passing through the rocker. Both ends of the short shaft are installed in an axial groove reserved on the base plate. A cover plate connected to the base plate by bolts is also provided on the axial groove. The area of ​​the lower surface of the cover plate is larger than the opening area of ​​the axial groove. Soft rubber is also provided on the end of the rocker close to the workpiece. When positioning, the rocker presses the workpiece tightly against the positioning block group.

[0013] Based on the design of the second clamping cylinder group, the utility model realizes the side clamping of the workpiece through the swing of the rocker, and at the same time, the setting of the soft rubber protects the surface of the workpiece and avoids damage during the clamping process.

[0014] Furthermore, the positioning cylinder group includes a positioning column arranged at one end of the base plate and an axial cylinder at the other end. During positioning, the output end of the axial cylinder and the positioning column are respectively fitted with the two end surfaces of the workpiece.

[0015] Based on the design of the positioning cylinder group, the utility model realizes the precise positioning of both ends of the workpiece, ensuring the stability and precision during the processing.

[0016] Furthermore, a driven rotating component is provided at the other end of the substrate, and the driven rotating component is fixed on the base and is coaxial with the spindle box. Rotating bosses are respectively provided on the opposite sides of the driven rotating component and the spindle box. Both ends of the substrate are fixed to the rotating bosses by bolts. A servo motor is also provided on one side of the spindle box, and the output end of the servo motor drives the rotating boss to rotate.

[0017] Based on the above, the design of the driven rotating component and the servo motor, the utility model improves the overall rigidity and stability of the clamp, while the setting of the servo motor enables the clamp to adapt to different processing requirements, thereby improving the flexibility and efficiency of processing.

[0018] Furthermore, at least one of the reference blocks is provided with a tool relief groove.

[0019] Based on the above, the setting of the tool groove avoids the interference between the tool and the fixture during the processing and ensures the processing quality.

[0020] In order to more clearly illustrate the above features of the present invention and the objectives to be achieved, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 : It is the front view of the utility model;

[0022] Figure 2 : It is an axonometric drawing of the utility model;

[0023] Figure 3 : is a schematic structural diagram of the reference block 41;

[0024] Figure 4 : is a structural schematic diagram of the positioning block group 4;

[0025] Figure 5 :for Figure 4 A schematic diagram of the structure after the workpiece 18 is placed;

[0026] Figure 6 :for Figure 5 The enlarged structural diagram of the middle C part;

[0027] Figure 7 :for Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0028] Figure 8 :for Figure 1 A cross-sectional view of the middle BB section;

[0029] Fig. 9 : It is the front view of the utility model.

[0030] Explanation of the accompanying numbers: 1-base; 2-spindle box; 3-base plate; 4-positioning block group; 41-reference block; 42-first supporting block; 43-second supporting block; 5-tool groove; 6-first clamping cylinder group; 61-lifting cylinder; 7-pressure head; 8-second clamping cylinder group; 81-push-pull cylinder; 82-connecting plate; 9-rocker; 10-short shaft; 11-shaft groove; 12-cover plate; 13-soft rubber; 14-positioning cylinder group; 141-positioning column; 142-axial cylinder; 15-driven rotating assembly; 16-rotating boss; 17-servo motor; 18-workpiece; 181-convex bottom surface; 182-concave bottom surface; 183-side surface; 184-convex top surface; 185-concave top surface. DETAILED DESCRIPTION

[0031] like Figures 1 to 9 As shown, a four-axis machining fixture for left and right side beams includes a base 1 and a spindle box 2 arranged on the base 1, a base plate 3 is fixedly arranged at the output end of the spindle box 2, the other end of the base plate 3 is connected to a driven rotating component 15, the length of the base plate 3 is greater than the length of the workpiece 18, and a positioning block group 4, a first clamping cylinder group 6, a second clamping cylinder group 8 and a positioning cylinder group 14 are arranged on the base plate 3, the positioning block groups 4 are arranged at intervals along the base plate 3, the first clamping cylinder group 6 is arranged on one side of the positioning block group 4, the second clamping cylinder group 8 passes through the base plate 3 and is arranged below the base plate 3, and the positioning cylinder group 14 is arranged on one side of the base plate 3 close to the spindle box 2 and the driven rotating component 15 respectively.

[0032] The positioning block group 4 includes a reference block 41, a first support block 42 and a second support block 43. The reference block 41, the first support block 42 and the second support block 43 are all set in at least two numbers. When the blank workpiece 18 is placed, the reference block 41 is in contact with the side surface 183 of the workpiece, the first support block 42 is in contact with the convex bottom surface 181 of the workpiece, and the second support block 43 is in contact with the concave bottom surface 182 of the workpiece.

[0033] The first clamping cylinder group 6 includes at least two lifting cylinders 61 and is arranged on both sides of the workpiece fixing position of the substrate 3. A pressure head 7 is provided at the output end of the lifting cylinder 61. When clamping the workpiece 18, the lifting cylinder 61 descends, and the pressure heads 7 on both sides respectively press the convex top surface 184 and the concave top surface 185 of the workpiece.

[0034] The second clamping cylinder group 8 includes at least two push-pull cylinders 81 and is arranged below the base plate 3 through a connecting plate 82. The output end of the push-pull cylinder 81 is hinged with a rocker 9 passing through the base plate 3. A short shaft 10 passing through the rocker 9 is also arranged in the middle of the rocker 9. Both ends of the short shaft 10 are installed in an axial groove 11 reserved on the base plate 3. A cover plate 12 bolted to the base plate 3 is also arranged on the axial groove 11. The area of ​​the lower surface of the cover plate 12 is larger than the opening area of ​​the axial groove 11. Soft rubber 13 is also arranged on the end of the rocker 9 close to the workpiece 18. When positioning, the rocker 9 presses the workpiece tightly against the positioning block group 4.

[0035] The positioning cylinder group 14 includes a positioning column 141 arranged at one end of the base plate 3 and an axial cylinder 142 at the other end. During positioning, the output end of the axial cylinder 142 and the positioning column 141 are respectively fitted with the two end surfaces of the workpiece 18.

[0036] A driven rotating component 15 is provided at the other end of the base plate 3. The driven rotating component 15 is fixed on the base 1 and is coaxial with the spindle box 2. Rotating bosses 16 are respectively provided on the opposite sides of the driven rotating component 15 and the spindle box 2. Both ends of the base plate 3 are fixed to the rotating bosses 16 by bolts. A servo motor 17 is also provided on one side of the spindle box 2. The output end of the servo motor 17 drives the rotating boss 16 to rotate.

[0037] Optionally, at least one reference block 41 is provided with a tool relief groove 5 .

[0038] The specific working mode of the utility model is as follows:

[0039] First, the left and right side beam four-axis machining fixtures need to be precisely assembled on the base 1, and the spindle box 2 is firmly set on the base 1, and its output end is fixedly connected to the base plate 3. The length of the base plate 3 is designed to be longer than the workpiece 18 to ensure that the workpiece 18 can be stably supported during the entire machining process.

[0040] On the base plate 3, the utility model carefully arranges the positioning block group 4, the first clamping cylinder group 6, the second clamping cylinder group 8 and the positioning cylinder group 4. The positioning block groups 4 are arranged at intervals along the base plate 3, and they are responsible for accurately positioning the workpiece 18 before processing. The first clamping cylinder group 6 is arranged next to the positioning block group 4, away from the axis of the spindle box 2, and their function is to clamp one side of the workpiece 18 during processing. The second clamping cylinder group 8 cleverly passes through the base plate 3 and is arranged below the base plate 3. They clamp the workpiece 18 from below to ensure that the workpiece 18 does not move or deform during processing. The positioning cylinder groups 4 are arranged at the two axial ends of the base plate 3, and they are responsible for the final positioning and fixation of the workpiece 18 before processing.

[0041] Specifically, the positioning block group 4 includes a reference block 41, a first support block 42 and a second support block 43, and the number of each of them is at least two. When placing the workpiece 18 blank, the reference block fits tightly with the side of the workpiece 18, the first support block 42 fits with the convex bottom surface of the workpiece 18, and the second support block 43 fits with the concave bottom surface of the workpiece 18. Such a design ensures the precise positioning of the workpiece 18 before processing.

[0042] The first clamping cylinder group 6 includes at least two lifting cylinders 61, which are arranged on both sides of the axis of the base plate 3. When clamping the workpiece 18, the lifting cylinder 61 descends, and the pressure heads on both sides respectively press the convex top surface 184 and the concave top surface 185 of the workpiece 18, thereby ensuring the stability of the workpiece 18 during the processing.

[0043] The second clamping cylinder group 8 includes at least two push-pull cylinders 81, which are arranged below the base plate 3 through a connecting plate 82. The output end of the push-pull cylinder 81 is hinged with a rocker 9 passing through the base plate 3, and a short shaft 10 passing through the rocker 9 is also arranged in the middle of the rocker 9, and both ends of the short shaft 10 are installed in the shaft grooves reserved on the base plate 3. When positioning, the rocker 9 presses the workpiece 18 tightly against the positioning block group 4, thereby ensuring the stability of the workpiece 18 during the processing.

[0044] The positioning cylinder group 4 includes a positioning column 141 arranged at one end of the base plate 3 and an axial cylinder 142 at the other end. During positioning, the output end of the axial cylinder 142 and the positioning column 141 are respectively fitted with the two end surfaces of the workpiece 18, thereby ensuring the accurate positioning of the workpiece 18 during the processing.

[0045] In addition, a driven rotating assembly 15 is provided at the other end of the base plate 3, which is fixed on the base 1 and coaxial with the spindle box 2. A rotating boss is provided on the opposite side of the driven rotating assembly 15 and the spindle box 2, and both ends of the base plate 3 are fixed to the rotating boss by bolts. Such a design allows the base plate 3 to rotate during the processing, thereby facilitating the processing of different parts of the workpiece 18.

[0046] The above description is only the optimal solution embodiment of the present invention and is not intended to limit the present invention. Various modifications or substitutions made to the present invention by those skilled in the art without departing from the essence and protection scope of the present invention should also be within the protection scope of the present invention.

Claims

1. A four-axis machining fixture for left and right side beams, comprising a base (1) and a spindle box (2) arranged on the base (1), characterized in that: A base plate (3) is fixedly provided at the output end of the spindle box (2), and the other end of the base plate (3) is connected to a driven rotating component (15). The length of the base plate (3) is greater than the length of the workpiece (18). A positioning block group (4), a first clamping cylinder group (6), a second clamping cylinder group (8) and a positioning cylinder group (14) are provided on the base plate (3). The positioning block groups (4) are arranged at intervals along the base plate (3), the first clamping cylinder group (6) is provided on one side of the positioning block group (4), the second clamping cylinder group (8) passes through the base plate (3) and is provided below the base plate (3), and the positioning cylinder group (14) is provided on one side of the base plate (3) close to the spindle box (2) and the driven rotating component (15), respectively.

2. The four-axis machining fixture for left and right side beams according to claim 1 is characterized in that: The positioning block group (4) comprises a reference block (41), a first support block (42) and a second support block (43); the reference block (41), the first support block (42) and the second support block (43) are each provided in at least two numbers; when a blank workpiece (18) is placed, the reference block (41) is in contact with a side surface (183) of the workpiece, the first support block (42) is in contact with a convex bottom surface (181) of the workpiece, and the second support block (43) is in contact with a concave bottom surface (182) of the workpiece.

3. The four-axis machining fixture for left and right side beams according to claim 1 is characterized in that: The first clamping cylinder group (6) comprises at least two lifting cylinders (61) and is arranged on both sides of the workpiece fixing position of the substrate (3). The output end of the lifting cylinder (61) is provided with a pressure head (7). When clamping the workpiece (18), the lifting cylinder (61) descends, and the pressure heads (7) on both sides respectively press the convex top surface (184) and the concave top surface (185) of the workpiece.

4. The four-axis machining fixture for left and right side beams according to claim 3 is characterized in that: The second clamping cylinder group (8) comprises at least two push-pull cylinders (81) and is arranged below the base plate (3) through a connecting plate (82). The output end of the push-pull cylinder (81) is hinged with a rocker (9) passing through the base plate (3). The middle part of the rocker (9) is also provided with a short shaft (10) passing through the rocker (9). Both ends of the short shaft (10) are installed in an axial groove (11) reserved on the base plate (3). The axial groove (11) is also provided with a cover plate (12) bolted to the base plate (3). The area of ​​the lower surface of the cover plate (12) is larger than the opening area of ​​the axial groove (11). The end of the rocker (9) close to the workpiece (18) is also provided with soft rubber (13). When positioning, the rocker (9) presses the workpiece tightly against the positioning block group (4).

5. The four-axis machining fixture for left and right side beams according to claim 1, characterized in that: The positioning cylinder group (14) comprises a positioning column (141) arranged at one end of the base plate (3) and an axial cylinder (142) at the other end. During positioning, the output end of the axial cylinder (142) and the positioning column (141) are respectively fitted with the two end surfaces of the workpiece (18).

6. The four-axis machining fixture for left and right side beams according to claim 1, characterized in that: The driven rotating component (15) is fixed on the base (1) and is coaxial with the spindle box (2). The driven rotating component (15) and the spindle box (2) are respectively provided with rotating bosses (16) on the opposite sides. Both ends of the base plate (3) are fixed to the rotating bosses (16) by bolts. A servo motor (17) is also provided on one side of the spindle box (2). The output end of the servo motor (17) drives the rotating boss (16) to rotate.

7. The four-axis machining fixture for left and right side beams according to claim 2, characterized in that: At least one of the reference blocks (41) is provided with a tool relief groove (5).

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