Precise clamp for drilling, boring, reaming and rolling of oil cylinder

Abstract

The utility model relates to a clamp for machining a hydraulic oil cylinder barrel, in particular to a precise clamp for drilling, boring, reaming and rolling an oil cylinder. Comprising a clamp body, a locking piece and a base. The clamp body comprises a fixed clamp and a movable clamp, the fixed clamp is fixedly connected with the base, and the movable clamp is located above the fixed clamp and detachably and fixedly connected with the fixed clamp; a locking piece is arranged on the side wall of the movable clamp, fixes the oil cylinder in the radial direction of the oil cylinder and corresponds to a connecting hole in the oil cylinder. A Z-direction positioning piece is further arranged on the base, and the Z-direction positioning piece can abut against a port of the oil cylinder; the plane where the base is located is perpendicular to the axis of the oil cylinder. The precise clamp for drilling, boring, reaming and rolling of the oil cylinder is low in clamping frequency and high in machining precision.

Description

Technical Field

[0001] This utility model relates to a fixture for machining hydraulic cylinder barrels, specifically a precision fixture for drilling, boring, reaming, and rolling hydraulic cylinders. Background Technology

[0002] The requirements for the roughness, roundness, and straightness of the inner bore of the hydraulic cylinder are much higher than those for conventionally machined parts. Without special fixtures, achieving a roughness of no more than Ra0.4 requires multiple precision machining processes, which results in a longer machining cycle, more clamping times, and larger cumulative errors, making it unsuitable for mass production. Utility Model Content

[0003] The present invention aims to provide a precision jig for hydraulic cylinder drilling, boring, reaming, and rolling, which has the advantages of fewer clamping operations and high machining accuracy, while improving production efficiency.

[0004] The precision jig for drilling, boring, reaming, and rolling of hydraulic cylinders in this solution includes a jig body, a locking component, and a base. The jig body includes a fixed jig and a movable jig. The fixed jig is fixedly connected to the base, and the movable jig is located above the fixed jig and detachably fixedly connected to it. The movable jig is equipped with a locking component that fixes the hydraulic cylinder radially. The locking component corresponds to a connecting hole on the hydraulic cylinder; specifically, the locking component is threadedly connected to the connecting hole on the hydraulic cylinder, fixing the hydraulic cylinder to the surface of the movable jig with the locking component. Compared with traditional extrusion fixing methods, this ensures a smooth, indentation-free surface on the hydraulic cylinder. The base is also equipped with a Z-axis positioning component that abuts against the port of the hydraulic cylinder, ensuring stability during the machining of the cylinder's inner bore. The plane of the base is perpendicular to the axis of the hydraulic cylinder.

[0005] The advantages of this utility model are: 1) Drilling, boring, reaming and rolling can be continuously processed by clamping the cylinder only once, reducing the number of clamping times, the cumulative error is small and the production efficiency is high; 2) This fixture adopts a dual-station design, which can realize the use of the same fixture for two processes with one debugging; 3) The cylinder is positioned by connecting the cylinder, the fixture debugging time is short and the positioning accuracy is high.

[0006] Furthermore, the movable clamp is U-shaped, and the hydraulic cylinder is tightly fitted to the inner wall of the movable clamp via a locking element. The U-shaped structure of the movable clamp facilitates the insertion or removal of the hydraulic cylinder from the opening of the U-shaped structure.

[0007] Furthermore, the locking mechanism includes an X-axis locking mechanism and a Y-axis locking mechanism.

[0008] Furthermore, the locking components are in two sets: two sets of X-axis locking components located on the same plane, and two sets of Y-axis locking components located on two parallel planes. When one end of the hydraulic cylinder is placed upwards, the cylinder's connecting hole corresponds to the first set of locking components. When the other end of the hydraulic cylinder is placed upwards, the cylinder's connecting hole corresponds to the second set of locking components. If the outer wall of the hydraulic cylinder has an asymmetrical structure, it can be quickly clamped onto the movable fixture regardless of which end is upwards, improving efficiency.

[0009] Furthermore, the upper and lower end faces of the movable fixture are positioning planes. The three faces of the U-shaped end face together form the positioning end face, ensuring stable force on the hydraulic cylinder during the machining of the inner hole.

[0010] Furthermore, the fixed fixture includes an L-shaped fixture and a straight-line fixture. When the inner hole of the hydraulic cylinder is subjected to force during machining, the upper end face of the L-shaped fixture has two contact surfaces with the positioning plane of the movable fixture, ensuring the stability and accuracy of the hydraulic cylinder during the machining of the inner hole.

[0011] Furthermore, the Z-axis positioning member can be adjusted in length along the Z-axis to accommodate cylinders of different lengths. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the hydraulic cylinder drilling, boring, reaming, and rolling precision fixture in use.

[0013] Figure 2 This is a schematic diagram of the structure of the hydraulic cylinder drilling, boring, reaming, and rolling precision fixture of this utility model;

[0014] Figure 3 This is a cross-sectional view of the hydraulic cylinder drilling, boring, reaming, and rolling precision fixture in use.

[0015] Figure 4 This is a structural diagram of the hydraulic cylinder drilling, boring, reaming, and rolling precision fixture used in this utility model.

[0016] Figure 5 An exploded view of the hydraulic cylinder drilling, boring, reaming, and rolling precision fixture of this utility model;

[0017] Figure 6 This is a schematic diagram of the movable fixture in the hydraulic cylinder drilling, boring, reaming, and rolling precision fixture of this utility model;

[0018] Figure 7 This is a schematic diagram of a hydraulic cylinder.

[0019] In the diagram, 1 is the main body of the clamp, 1-1 is the fixed clamp, 1-2 is the movable clamp, 1-3 is the positioning plane, 1-4 is the locking hole, 1-5 is the connecting bolt, 2 is the locking component, 2-1 is the X-axis locking component, 2-2 is the Y-axis locking component, 3 is the base, 4 is the Z-axis positioning component, 5 is the hydraulic cylinder, 5-1 is the inner hole, 5-2 is the connecting hole, and 6 is the lifting ring. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0021] according to Figures 1 to 7 As shown, a precision jig for drilling, boring, reaming, and rolling using a hydraulic cylinder includes a jig body 1, a locking element 2, and a base 3. The jig body 1 includes a fixed jig 1-1 and a movable jig 1-2. The fixed jig 1-1 is welded to the base 3, which has connecting screw holes for connection to a machine base. The movable jig 1-2 is located above the fixed jig 1-1, and its upper and lower end faces are positioning planes 1-3. The movable jig 1-2 is preferably U-shaped, and four connecting bolts 1-5 pass through the movable jig 1-2 and are threadedly connected to the fixed jig 1-1. The movable jig 1-2 is equipped with a locking element 2, which fixes the hydraulic cylinder 5 radially. The hydraulic cylinder 5 is tightly fitted against the inner wall of the movable jig 1-2 through the locking element 2. Specifically, the locking element 2 corresponds to the connecting hole 5-2 on the hydraulic cylinder 5. The locking component 2 is preferably a locking bolt, which passes through the movable clamp 1-2 and is threadedly connected to the connecting hole 5-2 on the hydraulic cylinder 5. Preferably, the locking component 2 includes an X-direction locking component 2-1 and a Y-direction locking component 2-2. A Z-direction positioning component 4 is also provided on the base 3. The Z-direction positioning component 4 can be adjusted in length along the Z-direction so that it abuts against the port of the hydraulic cylinder 5. The Z-direction positioning component 4 can be a telescopic rod, a bolt, etc., and in this embodiment, a bolt is preferred. The plane of the base 3 is perpendicular to the axis of the hydraulic cylinder 5.

[0022] As a further improvement of this utility model, the locking member 2 has two sets, wherein the two sets of X-direction locking members 2-1 are located on the same plane, and the two sets of Y-direction locking members 2-2 are located on two parallel planes. Specifically, the first set of locking members 2 is located on the left and rear sides of the movable clamp 1-2, and the left and rear sides of the movable clamp 1-2 are respectively provided with the first set of locking holes 1-4; the second set of locking members 2 is located on the right and rear sides of the movable clamp 1-2, and the right and rear sides of the movable clamp 1-2 are respectively provided with the second set of locking holes 1-4; the locking members 2 fix the hydraulic cylinder 5 and the movable clamp 1-2 in a fixed connection. If the outer wall of the hydraulic cylinder 5 has an asymmetrical structure, the hydraulic cylinder 5 can be quickly clamped onto the movable clamp 1-2 regardless of which end is facing upwards when it is placed.

[0023] As a further improvement of this utility model, the fixing fixture 1-1 includes an L-shaped fixture and a straight-line fixture. When the inner hole 5-1 of the hydraulic cylinder 5 is subjected to machining force, the L-shaped fixture can increase stability, ensuring the stability and accuracy of the hydraulic cylinder 5 during the machining of the inner hole 5-1.

[0024] The movable fixture 1-2 is lifted by magnetic attraction via the lifting ring 6. In use, the hydraulic cylinder 5 is first fixed within the movable fixture 1-2 and adjusted. After completing the continuous machining of drilling, boring, reaming, and roll forming at one end of the hydraulic cylinder 5, the movable fixture 1-2 is flipped over and then fixed back onto the fixed fixture 1-1. The other end of the hydraulic cylinder 5 is then subjected to continuous machining of drilling, boring, reaming, and roll forming. This dual-station design allows two processes to share the same fixture in a single setup, reducing the number of clamping operations and improving production efficiency.

[0025] The above description is merely an embodiment of this utility model, and common knowledge such as specific structures and characteristics of the solution is not described in detail here. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model, and these should also be considered within the protection scope of this utility model, without affecting the effectiveness of the implementation of this utility model and the practicality of the patent.

Claims

1. A precision jig for hydraulic drilling, boring, reaming, and rolling, characterized in that: The device includes a clamp body, a locking component, and a base. The clamp body comprises a fixed clamp and a movable clamp. The fixed clamp is fixedly connected to the base, and the movable clamp is located above the fixed clamp and detachably fixedly connected to it. The movable clamp has a locking component on its side wall, which fixes the hydraulic cylinder radially and corresponds to a connecting hole on the hydraulic cylinder. The base is also provided with a Z-axis positioning component, which abuts against the port of the hydraulic cylinder. The plane of the base is perpendicular to the axis of the hydraulic cylinder.

2. The precision jig for hydraulic cylinder drilling, boring, reaming, and rolling according to claim 1, characterized in that: The movable clamp is U-shaped, and the hydraulic cylinder is tightly fitted to the inner wall of the movable clamp through a locking component.

3. The precision jig for hydraulic cylinder drilling, boring, reaming, and rolling according to claim 1 or 2, characterized in that: The locking mechanism includes an X-axis locking mechanism and a Y-axis locking mechanism.

4. The precision jig for hydraulic cylinder drilling, boring, reaming, and rolling according to claim 3, characterized in that: The locking mechanism consists of two sets: two sets of X-axis locking mechanisms located on the same plane, and two sets of Y-axis locking mechanisms located on two parallel planes.

5. The precision jig for hydraulic cylinder drilling, boring, reaming, and rolling according to claim 1 or 2, characterized in that: The upper and lower end faces of the movable clamp are positioning planes.

6. The precision jig for hydraulic cylinder drilling, boring, reaming, and rolling according to claim 1, characterized in that: The fixing fixture includes an L-shaped fixture and a straight fixture.

7. The precision jig for hydraulic cylinder drilling, boring, reaming, and rolling according to claim 1, characterized in that: The Z-axis positioning element can be adjusted in length along the Z-axis.

Images