A quick-assembled milling machine bearing connecting rod flat milling tool
By using a milling machine bearing connecting rod flattening fixture that is quickly assembled, and utilizing the clamping block limit groove and cylinder-driven upper pressure plate, the parts can be quickly positioned and clamped. This solves the problem of dimensional inconsistencies in existing technologies and improves machining accuracy and mass production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHU NEW SHENZHOU AEROSPACE TECH CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-06-23
AI Technical Summary
When machining existing connecting rod parts, the four-axis full-profile milling after clamping with a central three-jaw chuck cannot guarantee the dimensions, resulting in excessive clearance after assembly, which increases the frequency and cost of equipment maintenance.
The milling machine bearing connecting rod flattening fixture, which is quickly assembled, achieves rapid positioning and clamping of parts through the clamping block limit groove and the cylinder-driven upper pressure plate. Combined with arc clamping and pin positioning, the milling length tolerance is controlled.
It enables rapid positioning and clamping, controls the milling length tolerance, improves machining accuracy, adapts to mass production rhythm, and reduces equipment maintenance costs.
Smart Images
Figure CN224390041U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connecting rod parts processing technology, and in particular to a quick-assembly milling fixture for bearing connecting rods on a milling machine. Background Technology
[0002] Connecting rods are key components that connect two bearing-type parts. If the dimensions of the connecting rod cannot be guaranteed during mechanical movement after assembly, excessive clearance will accelerate the wear of the entire connecting part, thereby increasing the number of maintenance operations and maintenance costs.
[0003] Currently, when machining connecting rod parts, a four-axis full-shape milling process is generally used after clamping with a center three-jaw chuck. Although this machining method is simple and the clamping is relatively straightforward, it cannot guarantee the dimensions of the connecting rod parts to adapt to the pace of mass production. Utility Model Content
[0004] To address the technical issue that existing connecting rod parts machining typically involves center three-jaw clamping followed by four-axis full-shape milling, while simple in process and relatively straightforward in clamping, it cannot guarantee the dimensions of the connecting rod parts to adapt to mass production rhythms, this utility model provides a quick-assembly milling fixture for bearing connecting rods.
[0005] This utility model is achieved using the following technical solution: a quick-assembly milling fixture for milling bearing connecting rods, comprising a base plate, a clamping block fixedly connected to the top of the base plate, a limiting groove for placing parts being opened in the middle of the top of the clamping block, a limiting component for fixing parts being provided at one end of the clamping block, and a pair of cylinders fixedly connected to the top of the base plate, with an upper pressure plate for clamping parts being installed at the top of the pair of cylinders.
[0006] With the above technical solution, the part is first placed in the limiting groove opened at the top of the clamping block, and then the limiting component is used to position the part. Then the cylinder is turned on to drive the upper pressure plate to press down and clamp the part. This achieves rapid positioning and also controls the tolerance of the milled length.
[0007] As a further improvement to the above solution, the limiting component includes a limiting hole opened at one end of the clamping block, and a pin is slidably installed inside the limiting hole.
[0008] As a further improvement to the above solution, an arc-shaped hole that fits into the part is provided on the inner side of the other end of the clamping block.
[0009] The above technical solution involves designing an arc-shaped clamping block at the front end of the part and using a pin to push it at the rear end, so that the front end of the arc of the part fits with the front end of the arc hole of the clamping block.
[0010] As a further improvement to the above solution, a pair of cylinders are located on two horizontally parallel sides of the fixed block, and studs are fixedly connected to the output end of the cylinders. The upper pressure plate has symmetrical through holes, and threaded sleeves are fixedly connected inside the through holes. The studs slide inside the threaded sleeves.
[0011] As a further improvement to the above solution, a connecting plate is fixedly connected to the side of the base plate, and a manual air valve for controlling the lifting and lowering of the cylinder is fixedly connected to the top of the connecting plate.
[0012] With the above technical solution, through holes are symmetrically opened at the upper pressure plate to facilitate quick clamping. The two studs fixed to the cylinder output end can pass through the pressure plate and be locked with nuts. Then, the manual air valve fixed to the top of the connecting plate is turned clockwise, so that the upper pressure plate moves downward with the cylinder output end and presses the part, thus achieving quick clamping.
[0013] As a further improvement to the above solution, handles are fixed to both vertically parallel sides of the base plate.
[0014] To facilitate the handling and placement of the fixtures, a handle is designed on each of the vertical parallel sides of the base plate, making it easier for employees to operate.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] 1. This utility model first places the part in the limiting groove opened at the top of the clamping block, then positions the part with the limiting component, and then opens the cylinder to drive the upper pressure plate to press down and clamp the part. This achieves rapid positioning and also controls the tolerance of the milled length.
[0017] 2. To facilitate the handling and placement of the clamps, this utility model includes a handle on each of the vertical parallel sides of the base plate, making it convenient for employees to operate. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0019] Figure 2 This is a rear view schematic diagram of the three-dimensional structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the structure of the bottom plate and top plate of this utility model.
[0021] Explanation of key symbols:
[0022] 1. Base plate; 2. Clamping block; 3. Limiting groove; 4. Cylinder; 5. Limiting hole; 6. Pin; 7. Arc hole; 8. Stud; 9. Through hole; 10. Screw sleeve; 11. Connecting plate; 12. Manual air valve; 13. Handle; 14. Upper pressure plate. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0024] Please combine Figures 1-3 This embodiment of a quick-assembly milling machine bearing connecting rod flattening fixture includes a base plate, a clamping block fixedly connected to the top of the base plate, a limiting groove for placing a part being opened in the middle of the top of the clamping block, a limiting component for fixing the part being provided at one end of the clamping block, a pair of cylinders fixedly connected to the top of the base plate, an upper pressure plate for clamping the part being installed at the top of the pair of cylinders, the limiting component including a limiting hole opened at one end of the clamping block, a pin being slidably installed inside the limiting hole, and an arc hole that fits against the part being opened on the inner side of the other end of the clamping block.
[0025] By first placing the part in the limiting groove at the top of the clamping block, and then inserting the pin in the limiting assembly into the limiting hole at one end of the clamping block, the front end of the part's arc is made to fit with the front end of the arc hole of the clamping block, thus achieving the positioning of the part. Finally, the cylinder is activated to drive the upper pressure plate to press down and clamp the part. This achieves rapid positioning and also controls the tolerance of the milled length.
[0026] Combination Figure 1 and Figure 2 A pair of cylinders are located on two horizontally parallel sides of the fixed block. The output end of the cylinder is fixedly connected to a stud. The upper pressure plate has symmetrical through holes. A threaded sleeve is fixedly connected inside the through hole. The stud slides inside the threaded sleeve. A connecting plate is fixedly connected to the side of the bottom plate. A manual air valve for controlling the lifting and lowering of the cylinder is fixedly connected to the top of the connecting plate.
[0027] By symmetrically opening through holes at the upper pressure plate, the two studs fixed to the cylinder output end can easily penetrate the pressure plate and be locked with nuts. Then, the manual air valve fixed to the top of the connecting plate can be turned clockwise to make the upper pressure plate move downward with the cylinder output end and press the part, thus achieving quick clamping.
[0028] Combination Figure 3 The base plate has handles fixed to its vertically parallel sides.
[0029] The handle design makes it easier for employees to pick up and place parts.
[0030] The implementation principle of the quick-assembly milling fixture for milling bearing connecting rods in this application embodiment is as follows:
[0031] Before machining the part, the worker first installs the threaded sleeve in the through hole of the upper pressure plate. Then, the worker holds one of the handles on the two outer sides of the base plate with one hand and places the part into the limiting groove at the top of the clamping block with the other hand. The upper pressure plate is then aligned with a pair of cylinders fixed to the top of the base plate, so that the studs fixed to the output end of the cylinders are inserted into the threaded sleeve. Then, the pin is inserted into the limiting hole at one end of the clamping block, so that the front end of the arc of the part fits with the front end of the arc hole of the clamping block, thus achieving the positioning of the part. Finally, the manual valve fixed to the top of the connecting plate is turned clockwise, so that the cylinder drives the upper pressure plate to press down and clamp the part. This achieves rapid positioning and also controls the tolerance of the milled length.
[0032] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A quick-assembly milling fixture for flattening bearing connecting rods on a milling machine, characterized in that, Includes a base plate, a clamping block is fixedly connected to the top of the base plate, a limiting groove for placing parts is opened in the middle of the top of the clamping block, and a limiting component for fixing the parts is provided at one end of the clamping block. A pair of cylinders are fixed to the top of the base plate, and an upper pressure plate for clamping the parts is installed on the top of the pair of cylinders.
2. The milling fixture for quickly assembling bearing connecting rods on a milling machine as described in claim 1, characterized in that, The limiting component includes a limiting hole at one end of the clamping block, and a pin is slidably installed inside the limiting hole.
3. The milling fixture for quickly assembling bearing connecting rods on a milling machine as described in claim 2, characterized in that, The clamping block has an arc-shaped hole on its inner side at the other end that fits into the part.
4. The milling fixture for quickly assembling bearing connecting rods on a milling machine as described in claim 1, characterized in that, A pair of cylinders are located on two sides of the fixed block that are parallel to each other laterally, and the output end of the cylinder is fixedly connected to a stud; The upper pressure plate is symmetrically provided with through holes, and a threaded sleeve is fixedly connected inside the through hole; The stud slides inside the threaded sleeve.
5. The milling fixture for quickly assembling bearing connecting rods on a milling machine as described in claim 4, characterized in that, A connecting plate is fixedly connected to the side of the base plate, and a manual air valve for controlling the lifting and lowering of the cylinder is fixedly connected to the top of the connecting plate.
6. The milling fixture for quickly assembling bearing connecting rods on a milling machine as described in claim 1, characterized in that, Handles are fixed to the two vertically parallel sides of the base plate.