Self-hinge honing machine robot loading automatic clamping tool

Abstract

The application relates to a self-hinge honing machine robot feeding automatic clamping tool, which comprises a base, an avoiding hole is arranged on the base, the avoiding hole is coaxially arranged with a center hole, the avoiding hole penetrates the base from top to bottom, clamping blocks are detachably fixed on the base, one clamping block is arranged on each side of the base along the radial direction of the center hole, the side surfaces of the two clamping blocks close to each other are respectively abutted against a workpiece, a pressing assembly for pressing a side supporting surface is arranged on the upper side of the base, and the supporting surface on the lower side of the workpiece is abutted against the base by the pressing assembly. The application has the effects of improving positioning accuracy and repeatability and improving the degree of automation.

Description

Technical Field

[0001] This application relates to the technical field of fixtures and tooling, and in particular to an automatic clamping fixture for loading a self-honing machine robot. Background Technology

[0002] With the continuous improvement of the precision requirements for the internal holes of components in high-end manufacturing, reaming and honing processes have been widely used in aerospace, hydraulic systems, automotive powertrains, and other fields due to their dual functions of dimensional control and surface quality improvement. As a key piece of equipment specifically designed for high-precision internal hole machining, the reaming and honing machine integrates reaming and honing functions, enabling the completion of roughing and finishing of holes in a single setup, offering significant advantages in terms of high efficiency and stable precision.

[0003] In actual production, the workpiece loading, positioning, and clamping devices remain a bottleneck restricting the overall level of automation. Traditional clamping systems mostly rely on manual thread tightening to fix the workpiece, which is not only cumbersome and inefficient, but also makes it difficult to maintain consistent clamping force. In high-precision reaming, if the workpiece moves even slightly due to insecure clamping or clamping deviation, it will directly lead to a decrease in hole position accuracy. In severe cases, it may even cause problems such as reamer jamming or damage, affecting the overall machining quality and equipment life. When machining a workpiece (engine valve rocker arm), the workpiece includes a body and a central hole formed on the body. The central hole has support surfaces formed at both ends, which are perpendicular to the axis of the central hole and parallel to each other.

[0004] In self-honing machines, the initial positioning and stable clamping accuracy of the workpiece are critical when the robotic arm performs machining tasks. Existing fixture systems rely on manual operation, resulting in unstable positioning accuracy and poor repeatability, making it difficult to meet the high consistency and high precision requirements of fully automated machining systems. Utility Model Content

[0005] To improve positioning accuracy and repeatability, and to enhance automation, this application provides an automatic clamping fixture for loading a self-honing machine robot.

[0006] The automatic clamping fixture for loading and unloading a self-honing machine robot provided in this application adopts the following technical solution:

[0007] An automatic clamping fixture for loading a self-honing machine robot includes a base with a clearance hole coaxially arranged with a central hole. The clearance hole passes through the base from top to bottom. Clamping blocks are detachably fixed on the base. One clamping block is arranged on each side of the workpiece along any radial direction of the central hole. The sides of the two clamping blocks that are close to each other abut against the workpiece. A clamping assembly is provided on the upper side of the base for pressing one side of the support surface. The clamping assembly presses the support surface of the lower side of the workpiece against the base.

[0008] By adopting the above technical solution, the workpiece is stably constrained in multiple directions through the cooperation between the tooling base, clamping block, and clamping assembly. Its function is to enable the workpiece to quickly and accurately enter the machining positioning state during automatic feeding, effectively preventing workpiece shaking or displacement from affecting honing accuracy, and facilitating stable clamping preparation before automated machining.

[0009] Preferably, the clamping assembly includes a clamping block, which slides and engages with the base in a vertical direction. The lower side of the clamping block abuts against the upper support surface of the workpiece. The clamping block is provided with a tool-relief groove that penetrates the clamping block in a vertical direction. The base is provided with a driving assembly to drive the clamping block to slide in a vertical direction.

[0010] By adopting the above technical solution, and by making the clamping block slippery and introducing a tool-relief structure, not only is the flexibility of the automatic clamping action improved, but also the necessary space is reserved for the subsequent machining path of the tool in the vertical direction. This combination can achieve clamping and machining without interference, ensuring the continuity and safety of internal hole machining, and is especially suitable for scenarios with extremely low tolerance for tool interference.

[0011] Preferably, the base is further provided with a rotating plate, which is rotatably connected to the base in any horizontal direction. The length direction of the rotating plate is perpendicular to the rotation axis between the rotating plate and the base. The rotation axis between the rotating plate and the base is located in the middle of the length direction of the rotating plate. The upper end of the clamping block is slidably engaged with one end of the rotating plate along the length direction of the rotating plate. The driving assembly drives the side of the rotating plate away from the clamping block to rotate around the rotation axis between the rotating plate and the base. The rotating plate and the clamping block rotate relative to each other around an axis parallel to the rotation axis between the rotating plate and the base.

[0012] By adopting the above technical solution, the driving rotation of the clamping block is achieved through a rotating plate, transforming the originally simple linear motion into a composite trajectory, thus enhancing the adjustability and adaptability of the clamping path. This solution can effectively alleviate the problem of drive arrangement under space-constrained conditions while ensuring clamping stability, and at the same time improve the flexibility of the system structure design.

[0013] Preferably, the drive assembly includes a telescopic rod and a telescopic block. The telescopic rod passes through the telescopic block along its own length and slides with the telescopic block along its own length. The end of the telescopic block opposite to the telescopic rod along its length is rotatably connected to the chassis of the self-honing machine. The rotation axis between the telescopic block and the chassis is parallel to the rotation axis between the rotating plate and the base. The end of the telescopic rod opposite to the telescopic block is rotatably connected to the side of the rotating plate opposite to the pressing block along its length. The rotation axis between the telescopic rod and the rotating plate is parallel to the rotation axis between the rotating plate and the base. A drive mechanism for driving the telescopic rod to slide is provided inside the telescopic block.

[0014] By adopting the above technical solution, and through the coordinated sliding and rotation between the telescopic rod and the telescopic block, this drive mechanism can achieve effective force transmission and reasonable path distribution. By rationally setting the direction of the rotational connection axis, high-efficiency motion conversion and stable output are achieved, ensuring smooth transmission and consistent response of the clamping action, and improving the overall operating accuracy of the device.

[0015] Preferably, the driving mechanism is configured as a cylinder piston drive, the telescopic block is configured as a cylinder, the cylinder is provided with a piston inside, the piston slides in the cylinder along the length direction of the cylinder, the piston is fixedly connected to the end of the telescopic rod opposite to the rotating plate, and two air nozzles are connected to the cylinder, the two air nozzles are respectively located on both sides of the piston thickness direction, and the two air nozzles are respectively connected to an external air pump.

[0016] By adopting the above technical solution, the cylinder and piston are combined to convert air pressure into linear thrust, thereby achieving automatic control of the telescopic rod. This structure has advantages such as fast response speed, high control precision, and good repeatability. It is particularly suitable for robot loading systems where clamping rhythm and force controllability are required, greatly enhancing the automation level of the device and the coordination of production rhythm.

[0017] Preferably, the rotating plate is provided with a waist-shaped groove, the length direction of the waist-shaped groove is parallel to the length direction of the rotating plate, the waist-shaped groove passes through the rotating plate in a direction parallel to the rotation axis of the rotating plate and the base, and a sliding column is provided on one side of the clamping block in the radial direction. The sliding column is embedded in the waist-shaped groove and slides in the waist-shaped groove along the length direction of the waist-shaped groove. The sliding column rotates relative to the rotating plate in the waist-shaped groove around its own axis.

[0018] By adopting the above technical solution, the combined action of the waist-shaped groove and the sliding column provides a controlled guiding path for the clamping block, effectively limiting its movement direction and range during the clamping process. This structure not only enhances the stability of the fixture's operation but also possesses a certain degree of self-adjustment capability, helping to adapt to minute tolerances in workpiece dimensions and improving the fitting accuracy and fault tolerance during the clamping process.

[0019] Preferably, a limiting ring is fixed on the base, the limiting ring is horizontally arranged, the limiting ring is sleeved on the outside of the pressing block, and the limiting ring and the pressing block slide and cooperate in the vertical direction.

[0020] By adopting the above technical solution, the addition of the limiting ring provides reliable external positioning and constraint for the vertical movement of the clamping block, effectively preventing unexpected slippage or dislocation during frequent operation. This structure enhances the controllability of the clamping mechanism in the vertical direction, improves the stability and durability of the clamping structure, and reduces the risk of error accumulation during long-term system operation.

[0021] Preferably, the lower end of the clamping block is in the shape of a polygonal column, and there are multiple gaps between the polygonal column-shaped clamping block and the limiting ring for chip removal.

[0022] By adopting the above technical solution, using a polygonal columnar structure and reserving a chip removal gap, the generated chips can be effectively dispersed during the processing, preventing clamping failures caused by chip jamming.

[0023] Preferably, the limiting ring is a soft limiting ring, a support frame is fixed on the base, and a pressure plate can be detachably fixed on the support frame. The upper end of the limiting ring is clamped between the pressure plate and the support frame.

[0024] By adopting the above technical solution, the use of the soft limiting ring not only provides the necessary limiting function but also has a good buffering effect, which can reduce the impact load on the fixture during the clamping process and protect the workpiece and the device structure. Combined with the detachable design of the support frame and pressure plate, this component is easy to maintain and replace, improving the maintainability and cost control of the tooling.

[0025] Preferably, an extension block is fixed to the side of the rotating plate away from the pressing block, the length direction of the extension block is parallel to the thickness direction of the rotating plate, and the end of the telescopic rod away from the telescopic block is rotatably connected to the side of the extension block away from the rotating block along its own length direction.

[0026] By adopting the above technical solution, the addition of the extension block optimizes the drive path between the telescopic rod and the rotating plate, making the force transmission more linear and the structure more compact, suitable for space-constrained integration scenarios. This connection method effectively reduces assembly interference caused by the arrangement of the drive structure, and improves the overall response speed of the fixture and the synchronization of the clamping action.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. This tooling uses clamping blocks to radially limit the workpiece and clamping components to apply pressure to the axial support surface, creating stable constraints in multiple directions. This effectively prevents the workpiece from shifting position during loading and processing, ensuring dimensional accuracy and repeatability during honing, and meeting high consistency manufacturing requirements.

[0029] 2. Through the combined design of the rotating plate, telescopic rod, and telescopic block, the clamping action path can be flexibly adjusted in space-constrained environments, and a rapid response is achieved using cylinder drive. The coordinated rotational force transmission and sliding in the structure ensure the sensitivity and reliability of the clamping action, while also facilitating integration into automated processing units;

[0030] 3. The clamping block is equipped with a tool-avoiding groove to avoid the reamer path. The base, together with the polygonal clamping block and the chip removal gap, forms an effective chip channel. At the same time, the limiting ring provides guidance and protection, and the soft limiting structure can absorb impact, effectively preventing tool jamming, chip jamming and component wear, and improving the overall operating safety and service life of the system. Attached Figure Description

[0031] Figure 1 This is an isometric view of the overall structure of the automatic clamping fixture for the self-honing machine robot, which is the main embodiment of this application.

[0032] Reference numerals: 1. Base; 11. Base plate; 12. Support seat; 13. Clamping block; 2. Support plate; 21. Support frame; 22. Pressure plate; 23. Limiting ring; 24. Positioning plate; 3. Rotating plate; 31. Waist-shaped groove; 32. Extension block; 4. Clamping block; 41. Tool relief groove; 42. Sliding column; 5. Drive assembly; 51. Telescopic block; 52. Telescopic rod; 53. Air nozzle; 6. Chassis; 100. Workpiece; 110. Center hole. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1 This application will be described in further detail.

[0034] This application discloses an automatic clamping fixture for loading materials onto a self-honing machine robot.

[0035] See Figure 1The automatic clamping fixture for the self-honing machine robot includes a base 1, which includes a base plate 11. A support seat 12 is fixed on the base plate 11. The support seat 12 has a clearance hole, which is vertically arranged and passes through the support seat 12 from top to bottom. Clamping blocks 13 are respectively arranged on both sides of any radial direction of the clearance hole. The two clamping blocks 13 are detachably fixed to the support seat 12. When the workpiece 100 (engine valve rocker arm) to be processed is placed on the support seat 12, the sides of the two clamping blocks 13 that are close to each other abut against the opposite sides of the workpiece 100. At this time, the clearance hole is coaxial with the center hole 110 of the workpiece 100 to be processed. A clamping assembly is also provided on the base plate 11, and a drive assembly 5 is provided on the chassis 6 to drive the clamping assembly to clamp the workpiece 100 to be processed vertically.

[0036] A support plate 2 is provided on the base plate 11. The support plate 2 is vertically arranged and located between the support base 12 and the chassis 6. A support frame 21 is fixed on the support plate 2. The support frame 21 is horizontally arranged and located on the upper side of the support base 12. A limiting ring 23 is embedded in the support frame 21. The limiting ring 23 is a soft limiting ring 23. A pressure plate 22 can also be detachably fixed on the support frame 21. The upper end of the limiting ring 23 is clamped between the pressure plate 22 and the support frame 21.

[0037] A positioning plate 24 is also fixed on the support plate 2. The positioning plate 24 is vertically arranged, and a rotating plate 3 is provided on the positioning plate 24. The rotating plate 3 is rotatably connected to the positioning plate 24 in a direction perpendicular to the line connecting the support base 12 and the base plate 11 in the horizontal direction. The length direction of the rotating plate 3 is perpendicular to the rotation axis between the rotating plate 3 and the base 1. The length direction of the rotating plate 3 is perpendicular to the rotation axis between the rotating plate 3 and the positioning plate 24, and the width direction of the rotating plate 3 is parallel to the rotation axis between the rotating plate 3 and the positioning plate 24.

[0038] The clamping assembly includes a clamping block 4. The upper end of the clamping block 4 slides along the length of the rotating plate 3. The rotating plate 3 and the clamping block 4 rotate relative to each other around an axis parallel to the rotation axis between the rotating plate 3 and the positioning plate 24. When the rotating plate 3 rotates to a specific angle, the lower side of the clamping block 4 abuts against the upper support surface of the workpiece 100. The clamping block 4 is provided with a tool-relief groove 41, which penetrates the clamping block 4 vertically. The driving assembly 5 drives the clamping block 4 and the limiting ring 23 to slide vertically. The lower end of the clamping block 4 is polygonal columnar, and there are multiple gaps between the polygonal columnar clamping block 4 and the limiting ring 23 for chip removal.

[0039] The clamping block 4 is also formed with a cutting groove 41, which penetrates the clamping block 4 in a vertical direction and is coaxial with the center hole 110.

[0040] The rotating plate 3 is provided with a waist-shaped groove 31, the length direction of which is parallel to the length direction of the rotating plate 3. The waist-shaped groove 31 extends through the rotating plate 3 along its width direction, forming one on each side of the clamping block 4. A sliding post 42 is provided on each side of the clamping block 4 in the radial direction, the axis of which is parallel to the width direction of the rotating plate 3. Any sliding post 42 is embedded in the corresponding waist-shaped groove 31, and slides along the length direction of the waist-shaped groove 31 within it. The sliding post 42 rotates relative to the rotating plate 3 within the waist-shaped groove 31 around its own axis.

[0041] An extension block 32 is fixed on the side of the rotating plate 3 away from the pressing block 4. The length direction of the extension block 32 is parallel to the thickness direction of the rotating plate 3.

[0042] A base 6 is also fixed on the honing machine. The drive assembly 5 drives the rotating plate 3 to rotate around the rotation axis of the rotating plate 3 and the positioning plate 24, with the side of the rotating plate 3 away from the pressing block 4 in the length direction. The drive assembly 5 includes a telescopic rod 52 and a telescopic block 51. The telescopic rod 52 passes through the telescopic block 51 along its own length direction and slides with the telescopic block 51 along its own length direction. The end of the telescopic block 51 away from the telescopic rod 52 in the length direction is rotatably connected to the base 6. The rotation axis between the telescopic block 51 and the base 1 is parallel to the rotation axis between the rotating plate 3 and the positioning plate 24. The end of the telescopic rod 52 away from the telescopic block 51 is rotatably connected to the side of the extension block 32 away from the rotating block in the length direction. The rotation axis between the telescopic rod 52 and the extension block 32 is parallel to the rotation axis between the rotating plate 3 and the positioning plate 24. A drive mechanism for sliding the telescopic rod 52 is provided inside the telescopic block 51.

[0043] The drive mechanism is set as a cylinder piston drive, and the telescopic block 51 is set as a cylinder. The piston is set inside the cylinder and slides in the cylinder along the length direction of the cylinder. The piston is fixedly connected to the end of the telescopic rod 52 opposite to the rotating plate 3. Two air nozzles 53 are connected to the cylinder. The two air nozzles 53 are located on both sides of the piston thickness direction, and the two air nozzles 53 are connected to the external air pump.

[0044] The implementation principle of the automatic clamping fixture for a self-honing machine robot in this application embodiment is as follows: The operator places the workpiece 100 to be processed on the support base 12, and the clamping block 13 makes the center hole 110 of the workpiece 100 coaxial with the clearance groove of the support base 12. The operator uses an external air pump to supply air to two air nozzles 53, thereby driving the piston to slide along the length direction of the cylinder. The piston drives the telescopic rod 52 to slide, thereby pushing or pulling the extension block 32, that is, driving the rotating plate 3 to rotate relative to the positioning plate 24. During the upward or downward rotation of the side of the rotating plate 3 away from the extension block 32 in the length direction, the two sliding columns 42 on the clamping block 4 slide and rotate relative to each other in the two waist-shaped grooves 31 of the rotating plate 3, so that the clamping block 4 slides in the vertical direction, thereby pressing against the upper support surface of the workpiece 100 or separating from the workpiece 100. In this way, the workpiece 100 is quickly positioned. During the machining process, the reamer can pass through the tool relief groove 41 of the clamping block 4 to machine the center hole 110 of the workpiece 100.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic clamping fixture for loading materials onto a self-honing machine robot, characterized in that: Includes a base (1), on which a clearance hole is provided, the clearance hole being coaxially arranged with a central hole (110), the clearance hole passing through the base (1) from top to bottom, and a clamping block (13) being detachably fixed on the base (1). One clamping block (13) is provided on each side of the workpiece (100) along any radial direction of the central hole (110), and the two clamping blocks (13) are close to each other on one side and respectively abut against the workpiece (100). A pressing assembly for pressing one side of the support surface is provided on the upper side of the base (1), and the pressing assembly makes the support surface on the lower side of the workpiece (100) abut against the base (1).

2. The automatic clamping fixture for loading and clamping a self-honing machine robot according to claim 1, characterized in that: The clamping assembly includes a clamping block (4), which slides and engages with the base (1) in the vertical direction. The lower side of the clamping block (4) abuts against the upper support surface of the workpiece (100). A tool-relief groove (41) is provided on the clamping block (4), which penetrates the clamping block (4) in the vertical direction. A driving assembly (5) is provided on the base (1) to drive the clamping block (4) to slide in the vertical direction.

3. The automatic clamping fixture for loading materials onto a self-honing machine robot according to claim 2, characterized in that: The base (1) is also provided with a rotating plate (3), which is rotatably connected to the base (1) in any horizontal direction. The length direction of the rotating plate (3) is perpendicular to the rotation axis between the rotating plate (3) and the base (1). The rotation axis between the rotating plate (3) and the base (1) is located in the middle of the length direction of the rotating plate (3). The upper end of the pressing block (4) slides and engages with one end of the rotating plate (3) along the length direction of the rotating plate (3). The driving component (5) drives the side of the rotating plate (3) away from the pressing block (4) to rotate around the rotation axis between the rotating plate (3) and the base (1). The rotating plate (3) and the pressing block (4) rotate relative to each other around an axis parallel to the rotation axis between the rotating plate (3) and the base (1).

4. The automatic clamping fixture for loading and clamping a self-honing machine robot according to claim 3, characterized in that: The drive assembly (5) includes a telescopic rod (52) and a telescopic block (51). The telescopic rod (52) passes through the telescopic block (51) along its own length direction and slides with the telescopic block (51) along its own length direction. The end of the telescopic block (51) away from the telescopic rod (52) along its length direction is rotatably connected to the chassis (6) on the self-honing machine. The rotation axis between the telescopic block (51) and the chassis (6) is parallel to the rotation axis between the rotating plate (3) and the base (1). The end of the telescopic rod (52) away from the telescopic block (51) is rotatably connected to the side of the rotating plate (3) away from the pressing block (4) along its length direction. The rotation axis between the telescopic rod (52) and the rotating plate (3) is parallel to the rotation axis between the rotating plate (3) and the base (1). The telescopic block (51) is provided with a drive mechanism for driving the telescopic rod (52) to slide.

5. The automatic clamping fixture for loading and clamping a self-honing machine robot according to claim 4, characterized in that: The driving mechanism is set as a cylinder piston drive, the telescopic block (51) is set as a cylinder, the cylinder is provided with a piston inside, the piston slides in the cylinder along the length direction of the cylinder, the piston is fixedly connected to the end of the telescopic rod (52) away from the rotating plate (3), and two air nozzles (53) are connected on the cylinder. The two air nozzles (53) are respectively located on both sides of the piston thickness direction, and the two air nozzles (53) are respectively connected to the outer air pump.

6. The automatic clamping fixture for loading materials onto a self-honing machine robot according to claim 3, characterized in that: The rotating plate (3) is provided with a waist-shaped groove (31), the length direction of the waist-shaped groove (31) is parallel to the length direction of the rotating plate (3), the waist-shaped groove (31) passes through the rotating plate (3) in a direction parallel to the rotation axis of the rotating plate (3) and the base (1), a sliding column (42) is provided on one side of the pressure block (4) in the radial direction, the sliding column (42) is embedded in the waist-shaped groove (31), the sliding column (42) slides in the waist-shaped groove (31) along the length direction of the waist-shaped groove (31), the sliding column (42) rotates relative to the rotating plate (3) in the waist-shaped groove (31) around its own axis.

7. The automatic clamping fixture for loading and clamping a self-honing machine robot according to claim 1, characterized in that: A limiting ring (23) is fixed on the base (1). The limiting ring (23) is horizontally positioned and sleeved on the outside of the pressing block (4). The limiting ring (23) and the pressing block (4) slide and cooperate in the vertical direction.

8. The automatic clamping fixture for loading materials onto a self-honing machine robot according to claim 7, characterized in that: The lower end of the clamping block (4) is polygonal columnar, and there are multiple gaps between the polygonal columnar clamping block (4) and the limiting ring (23) for chip removal.

9. The automatic clamping fixture for loading and clamping a self-honing machine robot according to claim 7, characterized in that: The limiting ring (23) is a soft limiting ring (23). A support frame (21) is fixed on the base (1). A pressure plate (22) can also be detachably fixed on the support frame (21). The upper end of the limiting ring (23) is clamped between the pressure plate (22) and the support frame (21).

10. The automatic clamping fixture for loading materials onto a self-honing machine robot according to claim 4, characterized in that: An extension block (32) is fixed on the side of the rotating plate (3) away from the pressing block (4). The length direction of the extension block (32) is parallel to the thickness direction of the rotating plate (3). The end of the telescopic rod (52) away from the telescopic block (51) is rotatably connected to the side of the extension block (32) away from the rotating block along its own length direction.

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