A machining center clamp for processing of a fork and connecting rod

Abstract

This utility model discloses a machining center fixture for machining forks and connecting rods. A fork clamping device is installed on the lower surface of the bridge plate of the four-axis fixture. The connecting rod clamping device includes a movable clamping module one and a fixed clamping module one, respectively installed at both ends of the upper surface of the bridge plate. The fork clamping device includes a movable clamping module two and a fixed clamping module two, respectively installed at both ends of the lower surface of the bridge plate. This utility model can process multiple workpieces simultaneously, clamping forks and connecting rods on both sides of the bridge plate, greatly improving machining efficiency. This utility model achieves rapid clamping and positioning. Through the design of the sliding plate and T-block, the clamping position can be quickly adjusted to adapt to workpieces of different sizes, making it widely applicable.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing technology, and in particular to a machining center fixture for processing forks and connecting rods. Background Technology

[0002] Forks and connecting rods are both important components of a forklift. Forks are used to carry and move goods; they are usually mounted at the front of the forklift and are used for lifting and tilting to move and stack goods. Connecting rods connect the piston and crankshaft, converting the reciprocating motion of the piston into the rotational motion of the crankshaft.

[0003] There are no effective fixtures in the existing technology suitable for the simultaneous production and processing of forks and connecting rods. These products are made of plates, castings and steel pipes welded together. After welding, holes need to be machined to ensure dimensional and positional tolerances. Existing fixture equipment is not suitable for the mass production of these products. Generally, clamping with pressure plates and pads is used, and the preparation work such as secondary clamping is complicated and the processing cycle is long. Utility Model Content

[0004] The purpose of this utility model is to overcome the deficiencies of the existing technology and provide a machining center fixture for processing forks and connecting rods.

[0005] This utility model is achieved through the following technical solution:

[0006] A machining center fixture for machining forks and connecting rods includes a four-axis fixture. The four-axis fixture includes a base, tailstock pads mounted at both ends of the base, tailstocks mounted on the tailstock pads, and a rotary distributor shaft rotatably mounted at the center of each of the two tailstocks. Rotary disks are mounted on opposite surfaces of the two tailstocks and connected to the rotary distributor shafts. Four-axis mounting plates are mounted on the rotary disks, and a bridge plate connects the two four-axis mounting plates. A connecting rod clamping device is mounted on the upper surface of the bridge plate. A fork clamping device is installed on the lower surface of the bridge plate. The linkage clamping device includes a movable clamping module and a fixed clamping module respectively installed at both ends of the upper surface of the bridge plate. The movable clamping module includes a sliding plate, on which a linkage clamping assembly is installed. T-shaped grooves are respectively formed on both sides of the upper surface of the bridge plate at the mounting end of the movable clamping module. Fixing holes are formed on the sliding plate. A T-shaped block is provided in the T-shaped groove that can slide within the T-shaped groove. The end of the T-block passes through the fixing hole and is locked with a nut; the fork clamping device includes a movable clamping module two and a fixed clamping module two respectively installed at both ends of the lower surface of the bridge plate. The movable clamping module two includes a sliding plate two, on which the fork clamping assembly one is installed. T-shaped grooves two are respectively opened on both sides of the lower surface of the bridge plate at the installation end of the movable clamping module two. The sliding plate two has a fixing hole. A T-block two that can slide in the T-shaped groove two is provided. The end of the T-block two passes through the fixing hole and is locked with a nut.

[0007] The first fixed clamping module includes a fixed mounting plate, on which a connecting rod clamping assembly identical to that on the first sliding plate is mounted. The connecting rod clamping assembly includes a first rotary cylinder seat, on which a first rotary cylinder is mounted, and on which a first pressing block is mounted. A connecting rod positioning block is mounted behind the first rotary cylinder seat. The first rotary cylinder drives the first pressing block to press the connecting rod onto the connecting rod positioning block.

[0008] The fork clamping assembly includes a single-acting cylinder, a rotary cylinder, a rotary cylinder, and a fork Y-axis positioning block. The single-acting cylinder, rotary cylinder, and rotary cylinder are respectively mounted on a sliding plate. A moving steel ball support structure is installed on the single-acting cylinder. A clamping block and a clamping block are respectively installed on the rotary cylinder. The fork Y-axis positioning block is mounted on the sliding plate and is located opposite to the single-acting cylinder. The rotary cylinder is located opposite to the rotary cylinder. A fork support block is installed on the sliding plate and is located on the side of the rotary cylinder.

[0009] The fixed clamping module two includes a fork clamping assembly two installed at one end of the bridge plate. The fork clamping assembly two includes a single-acting cylinder two, a rotary cylinder four, a rotary cylinder five, and a fork Y-direction positioning block two. The single-acting cylinder two, rotary cylinder four, and rotary cylinder five are respectively installed on the bridge plate via single-acting cylinder seat two, rotary cylinder seat four, and rotary cylinder seat five. A moving steel ball support structure two is installed on the single-acting cylinder two. A clamping block four and a clamping block five are respectively installed on the rotary cylinder four and rotary cylinder five. The fork Y-direction positioning block two is installed... Mounted on the bridge plate and located opposite to the single-acting cylinder 2, the rotary cylinder 5 is located opposite to the rotary cylinder 4. An oil circuit block is installed between the single-acting cylinder 2 and the fork Y-direction positioning block 2. A fork support seat is installed between the rotary cylinder 4 and the rotary cylinder 5. A fork support block 2 is installed on the fork support seat near the end of the rotary cylinder 4. A fork auxiliary support seat is installed on the side of the fork support seat near the rotary cylinder 5. A fork auxiliary support rod is installed on the fork auxiliary support seat. A fork X-direction positioning block is installed behind the fork support seat.

[0010] A connecting rod auxiliary support seat is installed in the middle of the upper surface of the bridge plate.

[0011] Multiple rectangular slots are formed in the bridge plate.

[0012] The advantages of this utility model are: 1. High efficiency

[0013] Multi-workpiece machining: By clamping the forks and connecting rods on both sides of the bridge plate at the same time, the forks and connecting rods can be machined simultaneously, which greatly improves the machining efficiency.

[0014] Quick clamping and positioning: The design of the sliding plate and T-blocks allows for quick adjustment of the clamping position to accommodate workpieces of different sizes;

[0015] 2. High precision

[0016] Stable clamping force: The design of the rotary cylinder and clamping block provides a stable clamping force, ensuring the stability of the workpiece during processing.

[0017] Multi-angle machining: Four-axis fixtures can achieve multi-angle machining of workpieces. When combined with high-precision machining centers, they can meet complex machining requirements.

[0018] 3. Flexibility

[0019] Adjustability: The design of the sliding plate and T-groove allows the fixture to adapt to workpieces of different sizes, improving the versatility of the fixture.

[0020] Multifunctionality: The integrated linkage and fork processing functions reduce the space occupied by the equipment and improve the utilization rate of the equipment.

[0021] 4. Reliability

[0022] Auxiliary support structure: The connecting rod auxiliary support seat and the fork support seat provide additional support to ensure the stability of the workpiece during processing.

[0023] This utility model features a four-axis flipping mechanism combined with a clamping device using hydraulic cylinders and other components. This design results in high clamping efficiency, improved overall alignment speed, and ease of use. It can simultaneously clamp forks and connecting rods, ensuring matching in production and improving the production quality and efficiency of forklift forks and connecting rods.

[0024] This invention achieves efficient, high-precision, and flexible machining functions through integrated design. Its multi-workpiece machining capability, rapid clamping and positioning design, and stable clamping force make it widely applicable in the field of machining. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is an isometric view of the other end of this utility model;

[0027] Figure 3 This is a side view of the present invention;

[0028] Figure 4 This is a schematic diagram of the lower surface structure of the bridge plate of this utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the movable clamping module of this utility model;

[0030] Figure 6 This is a structural schematic diagram of the fixing and clamping module of this utility model;

[0031] Figure 7 This is a schematic diagram of the second movable clamping module of this utility model;

[0032] Figure 8 This is a schematic diagram of the second fixing and clamping module of this utility model. Detailed Implementation

[0033] This invention utilizes a four-axis rotating mechanism, combined with a hydraulic cylinder clamping plate, to clamp fork and connecting rod blanks of various lengths, thereby improving work efficiency and clamping stability. The specific structure is as follows:

[0034] like Figure 1-4As shown, a machining center fixture for processing forks and connecting rods includes a four-axis fixture. The four-axis fixture includes a base 1, tailstock pads 2 are respectively installed at both ends of the base 1, tailstocks 3 are installed on the tailstock pads 2, and rotary distributor shafts 4 are rotatably installed at the centers of the two tailstocks 3. Rotary disks 5 are respectively installed on the opposite surfaces of the two tailstocks 3, and the rotary disks 5 are connected to the rotary distributor shafts 4. Four-axis mounting plates 6 are installed on the rotary disks 5, and a bridge plate 7 is connected between the two four-axis mounting plates 6. The rotary distributor shafts 4 are driven to rotate by a hydraulic pump station 48, thereby driving the rotary disks 5, four-axis mounting plates 6, and bridge plate 7 to rotate. This part is a standard component of the four-axis fixture and belongs to the prior art. A linkage clamping device is installed on the upper surface of the bridge plate 7, and a fork clamping device is installed on the lower surface of the bridge plate 7. The linkage clamping device includes a movable clamping module 8 and a fixed clamping module 9 respectively installed at both ends of the upper surface of the bridge plate 7. The movable clamping module 8 includes a sliding plate 10, on which a linkage clamping assembly is installed. T-shaped grooves 11 are respectively opened on both sides of the upper surface of the bridge plate 7 at the mounting end of the movable clamping module 8. A fixing hole is opened on the sliding plate 10. A T-shaped block is provided in the T-shaped groove 11, which can slide within the T-shaped groove 11. The end of the T-block 1 passes through the fixing hole and is locked with a nut. The fork clamping device includes a movable clamping module 2 12 and a fixed clamping module 2 13 respectively installed at both ends of the lower surface of the bridge plate 7. The movable clamping module 2 12 includes a sliding plate 2 14, on which the fork clamping assembly 1 is installed. T-shaped grooves 2 47 are respectively opened on both sides of the lower surface of the bridge plate 7 at the mounting end of the movable clamping module 2 12. Fixing holes are opened on the sliding plate 2 14. T-shaped blocks 2 that can slide within the T-shaped grooves 2 47 are provided. The end of the T-shaped blocks 2 passes through the fixing hole and is locked with a nut. The positions of the T-shaped groove 1 and the T-shaped groove 2 47 are staggered.

[0035] like Figure 5 , 6 As shown, the fixed clamping module 9 includes a fixed mounting plate 15. A connecting rod clamping assembly identical to that on the sliding plate 10 is mounted on the fixed mounting plate 15. The connecting rod clamping assembly includes a rotary cylinder seat 16. A rotary cylinder 17 is mounted on the rotary cylinder seat 16. A pressing block 18 is mounted on the rotary cylinder 17. A connecting rod positioning block 19 is mounted behind the rotary cylinder seat 16. The rotary cylinder 17 drives the pressing block 18 to press the connecting rod onto the connecting rod positioning block 19.

[0036] like Figure 7As shown, the fork clamping assembly includes a single-acting cylinder 20, a rotary cylinder 21, a rotary cylinder 22, and a fork Y-direction positioning block 23. The single-acting cylinder 20, rotary cylinder 21, and rotary cylinder 22 are respectively mounted on a sliding plate 14 via a single-acting cylinder seat 24, a rotary cylinder seat 25, and a rotary cylinder seat 3 26. A moving steel ball support structure 27 is installed on the single-acting cylinder 20. A clamping block 28 and a clamping block 3 29 are respectively installed on the rotary cylinder 21 and the rotary cylinder 22. The fork Y-direction positioning block 23 is mounted on the sliding plate 14 and is located on the opposite side of the single-acting cylinder 20. The rotary cylinder 22 is located on the opposite side of the rotary cylinder 21. A fork support block 1 is installed on the sliding plate 14 on the side of the rotary cylinder 21.

[0037] like Figure 8 As shown, the fixed clamping module 2 13 includes a fork clamping assembly 2 installed at one end of the bridge plate 7. The fork clamping assembly 2 includes a single-acting cylinder 2 30, a rotary cylinder 4 31, a rotary cylinder 5 32, and a fork Y-direction positioning block 2 33. The single-acting cylinder 2 30, the rotary cylinder 4 31, and the rotary cylinder 5 32 are respectively installed on the bridge plate 7 via a single-acting cylinder seat 2 34, a rotary cylinder seat 4 35, and a rotary cylinder seat 5 36. A moving steel ball support structure 2 is installed on the single-acting cylinder 2 30. A clamping block 4 37 and a clamping block 5 38 are respectively installed on the rotary cylinder 4 31 and the rotary cylinder 5 32. The fork Y-direction positioning block 2 33 is installed... Mounted on bridge plate 7 and located opposite to single-acting cylinder 2 30, rotary cylinder 5 32 is located opposite to rotary cylinder 4 31. A hydraulic circuit block 39 is installed between single-acting cylinder 2 30 and fork Y-direction positioning block 2 33. A fork support seat 40 is installed between rotary cylinder 4 31 and rotary cylinder 5 32. A fork support block 2 41 is installed on the fork support seat 40 near the end of rotary cylinder 4 31. A fork auxiliary support seat 42 is installed on the side of fork support seat 40 near rotary cylinder 5 32. A fork auxiliary support rod 43 is installed on the fork auxiliary support seat 42. A fork X-direction positioning block 44 is installed behind fork support seat 40.

[0038] The fork clamping assembly is mainly used to clamp and position the forks, ensuring their stability during processing.

[0039] The single-acting cylinder 20 is mounted on the sliding plate 14 via the single-acting cylinder seat 24 to provide a supporting force in one direction.

[0040] Moving steel ball support structure 27: Installed on single-acting cylinder 20, it supports the forks, reduces friction, and improves machining accuracy. Rotary cylinders 21 and 22 are mounted on sliding plate 14 via rotary cylinder seats 25 and 3, respectively, to provide clamping force. Clamping blocks 28 and 29: Installed on rotary cylinders 21 and 22, respectively, they clamp the forks onto fork support block 1. When rotary cylinders 21 and 22 operate, clamping blocks 28 and 29 apply pressure to the forks, firmly clamping them onto fork support block 1. The stroke of the rotary cylinders can be adjusted to accommodate forks of different sizes. Fork Y-axis positioning block 23, installed on sliding plate 14, opposite single-acting cylinder 20, is used to position the forks in the Y-axis direction, ensuring accurate fork positioning during machining. Fork support block one is mounted on sliding plate two 14, located on the side of rotary cylinder two 21, to support the forks and provide a stable support surface. Fixed clamping module two 13 is used to fix the other end of the forks, ensuring the stability of the forks during processing. Single-acting cylinder two 30 is mounted on bridge plate 7 via single-acting cylinder seat two 34, to provide support force in one direction. Moving steel ball support structure two: mounted on single-acting cylinder two 30, to support the forks, reduce friction, and improve processing accuracy. Rotary cylinder four 31 and rotary cylinder five 32 are mounted on bridge plate 7 via rotary cylinder seat four 35 and rotary cylinder seat five 36 respectively, to provide clamping force. Clamping block four 37 and clamping block five 38: mounted on rotary cylinder four 31 and rotary cylinder five 32 respectively, to press the forks against the fork support seat 40. When rotary cylinders 31 and 32 are activated, clamping blocks 37 and 38 apply pressure to the forks, firmly clamping them onto the fork support 40. Different fork sizes can be accommodated by adjusting the stroke of the rotary cylinders. The Y-axis positioning block 33 is mounted on the bridge plate, opposite to the single-acting cylinder 30, and is used to position the forks in the Y-axis direction, ensuring accurate positioning during processing. The fork support 40 is mounted on the bridge plate 7, between rotary cylinders 31 and 32, and supports the forks, providing a stable support surface. The fork support block 41 is mounted on the fork support 40, near one end of rotary cylinder 31, for further support of the forks. The fork auxiliary support 42 is mounted on the side of the fork support, near rotary cylinder 32, to provide additional support. Fork auxiliary support rod 43: Installed on the fork auxiliary support seat 42, it is used to further support the forks and ensure their stability during processing. Fork X-direction positioning block 44 is installed behind the fork support seat 40 to position the forks in the X-direction, ensuring accurate positioning of the forks during processing. The forks are placed on the fork support block 23 and the fork support seat 40, ensuring that the Y-direction and X-direction positions of the forks are positioned by the fork Y-direction positioning block 23 and the fork X-direction positioning block 44, respectively.Rotary cylinders 21 and 22 actuate, pressing the forks against the fork support block 1 via clamping blocks 28 and 39. Rotary cylinders 31 and 32 actuate, pressing the forks against the fork support seat 40 via clamping blocks 37 and 38. Single-acting cylinders 20 and 30 provide additional support force to ensure the stability of the forks during processing. Processing, such as milling and drilling, is performed while the forks are clamped. After processing, rotary cylinders 21, 3, 4, and 5 reset, releasing the forks. The processed forks are then removed.

[0041] A connecting rod auxiliary support seat 45 is installed in the middle of the upper surface of the bridge plate 7.

[0042] Multiple rectangular slots 46 are formed on the bridge plate 7.

[0043] Working principle

[0044] 1. Overall Structure and Function

[0045] This invention is an integrated multi-functional clamp for clamping workpieces while simultaneously machining forks and connecting rods. Through its four-axis clamping design, it achieves multi-angle machining and high-precision positioning of the workpiece.

[0046] Four-axis fixture: The workpiece is rotated and indexed through tailstock 3, rotary oil distribution shaft 4 and rotary disk 5. Together with four-axis hanging plate 6 and bridge plate 7, it provides stable support and processing platform.

[0047] Bridge plate 7: Bridge plate 7 connects two four-axis hanging plates 6. A connecting rod clamping device is installed on its upper surface and a fork clamping device is installed on its lower surface to realize the synchronous clamping and processing of two types of workpieces.

[0048] 2. Linkage clamping device

[0049] Fixed clamping module 19:

[0050] Linkage positioning block 19: Used to position the link to ensure its accurate position during processing.

[0051] Rotary cylinder 17: The connecting rod is pressed against the connecting rod positioning block 19 by the clamping block 18, providing a stable clamping force.

[0052] Moving clamping module 18:

[0053] Sliding plate 10: It slides on bridge plate 7 via T-block 1 and T-groove 11 to adjust the clamping position and is suitable for different sizes.

[0054] Linkage clamping assembly: Similar to the fixed clamping module 9, the linkage is clamped by rotating the hydraulic cylinder to drive the clamping block.

[0055] 3. Fork clamping device

[0056] Fixed clamping module 2 13:

[0057] Y-direction positioning block 233 for forks: used to position the forks in the Y direction.

[0058] Rotary cylinders 4, 31 and 5: clamp the forks by pressing blocks 4, 37 and 5, providing a stable clamping force.

[0059] Fork support 40 and fork auxiliary support 42: provide additional support to ensure the stability of the forks during processing.

[0060] Moving clamping module 2.12:

[0061] Sliding plate 2 14: It slides on bridge plate 7 through T-block 2 and T-groove 2 to adjust the clamping position.

[0062] Fork clamping assembly one: clamping and positioning of the forks is achieved through single-acting cylinder one 20, rotary cylinder two 21 and three.

[0063] 4. Auxiliary Structures

[0064] Linkage auxiliary support seat: Installed in the middle of the upper surface of bridge plate 7, it provides additional support for the link.

[0065] Work process

[0066] Workpiece installation:

[0067] The connecting rod is installed in the connecting rod clamping device and fixed by the clamping blocks of the fixed clamping module 9 and the movable clamping module 8.

[0068] The forks are installed in the fork clamping device and fixed by the clamping blocks of the fixed clamping module 2 13 and the movable clamping module 2 12.

[0069] Clamping and positioning:

[0070] The rotating hydraulic cylinder drives the clamping block to press the workpiece firmly, ensuring the stability of the workpiece during the processing.

[0071] The clamping position can be adjusted by sliding the sliding plate and T-block to accommodate workpieces of different sizes.

[0072] Processing procedure:

[0073] The four-axis fixture achieves workpiece rotation and indexing through the rotary oil distribution shaft 4 and the rotary disk 5, and, in conjunction with the X, Y, and Z axis movements of the machining center, completes multi-angle machining.

[0074] After processing is complete, loosen the clamping block and remove the processed workpiece.

Claims

1. A processing center jig for processing of a fork and a link, characterized by: The device includes a four-axis clamp, comprising a base, tailstock pads mounted at both ends of the base, tailstocks mounted on the tailstock pads, a rotary distributor shaft rotatably mounted at the center of each tailstock, a rotating disk mounted on the opposite surface of each tailstock and connected to the rotary distributor shaft, a four-axis mounting plate mounted on the rotating disk, a bridge plate connected between the two four-axis mounting plates, a linkage clamping device mounted on the upper surface of the bridge plate, and a fork clamping device mounted on the lower surface of the bridge plate. The linkage clamping device includes a movable clamping module and a fixed clamping module mounted at both ends of the upper surface of the bridge plate. The movable clamping module includes a sliding plate, on which a linkage clamping assembly is mounted. T-shaped grooves are formed on both sides of the upper surface of the bridge plate at the mounting ends of the movable clamping module. A fixing hole is formed on the sliding plate. A T-shaped block that can slide within the T-shaped groove is provided within the T-shaped groove. The end of the T-block passes through the fixing hole and is locked with a nut; the fork clamping device includes a movable clamping module two and a fixed clamping module two respectively installed at both ends of the lower surface of the bridge plate. The movable clamping module two includes a sliding plate two, on which the fork clamping assembly one is installed. T-shaped grooves two are respectively opened on both sides of the lower surface of the bridge plate at the installation end of the movable clamping module two. The sliding plate two has a fixing hole. A T-block two that can slide in the T-shaped groove two is provided. The end of the T-block two passes through the fixing hole and is locked with a nut.

2. The fork and link machining center clamp of claim 1, wherein: The first fixed clamping module includes a fixed mounting plate, on which a connecting rod clamping assembly identical to that on the first sliding plate is mounted. The connecting rod clamping assembly includes a first rotary cylinder seat, on which a first rotary cylinder is mounted, and on which a first pressing block is mounted. A connecting rod positioning block is mounted behind the first rotary cylinder seat. The first rotary cylinder drives the first pressing block to press the connecting rod onto the connecting rod positioning block.

3. The machining center fixture for machining forks and connecting rods according to claim 1, characterized in that: The fork clamping assembly includes a single-acting cylinder, a rotary cylinder, a rotary cylinder, and a fork Y-axis positioning block. The single-acting cylinder, rotary cylinder, and rotary cylinder are respectively mounted on a sliding plate. A moving steel ball support structure is installed on the single-acting cylinder. A clamping block and a clamping block are respectively installed on the rotary cylinder. The fork Y-axis positioning block is mounted on the sliding plate and is located opposite to the single-acting cylinder. The rotary cylinder is located opposite to the rotary cylinder. A fork support block is installed on the sliding plate and is located on the side of the rotary cylinder.

4. A machining center fixture for machining forks and connecting rods according to claim 1, characterized in that: The fixed clamping module two includes a fork clamping assembly two installed at one end of the bridge plate. The fork clamping assembly two includes a single-acting cylinder two, a rotary cylinder four, a rotary cylinder five, and a fork Y-direction positioning block two. The single-acting cylinder two, rotary cylinder four, and rotary cylinder five are respectively installed on the bridge plate via single-acting cylinder seat two, rotary cylinder seat four, and rotary cylinder seat five. A moving steel ball support structure two is installed on the single-acting cylinder two. A clamping block four and a clamping block five are respectively installed on the rotary cylinder four and rotary cylinder five. The fork Y-direction positioning block two is installed... Mounted on the bridge plate and located opposite to the single-acting cylinder 2, the rotary cylinder 5 is located opposite to the rotary cylinder 4. An oil circuit block is installed between the single-acting cylinder 2 and the fork Y-direction positioning block 2. A fork support seat is installed between the rotary cylinder 4 and the rotary cylinder 5. A fork support block 2 is installed on the fork support seat near the end of the rotary cylinder 4. A fork auxiliary support seat is installed on the side of the fork support seat near the rotary cylinder 5. A fork auxiliary support rod is installed on the fork auxiliary support seat. A fork X-direction positioning block is installed behind the fork support seat.

5. A machining center fixture for machining forks and connecting rods according to claim 2, characterized in that: A connecting rod auxiliary support seat is installed in the middle of the upper surface of the bridge plate.

6. A machining center fixture for machining forks and connecting rods according to claim 1, characterized in that: Multiple rectangular slots are formed in the bridge plate.

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