Multi-station small connecting rod floating hydraulic clamp

Abstract

The utility model provides a multi-station small connecting rod floating hydraulic clamp, which belongs to the technical field of machining and comprises a bottom plate, a positioning plate is arranged above the bottom plate, the bottom plate and the positioning plate are connected through a vertical plate to form a cavity, at least one oil cylinder is mounted in the cavity, a small-head support and a large-head support are mounted on the positioning plate, and the small-head support and the large-head support are mounted on the vertical plate. A connecting rod workpiece is placed on the small-head support and the large-head support, and a V-shaped block is arranged at the small-head end of the connecting rod workpiece. The connecting rod positioning device has the beneficial effects that the connecting rod large head and the connecting rod small head are respectively clamped on the large head support and the small head support, the connecting rod is propped against the fixed positioning block through the pusher dog of the elastic pusher dog mechanism, and meanwhile, the connecting rod small head is propped against the V-shaped block, so that the positioning of the connecting rod is realized; and the floating pressing mechanism can be driven to move to fix the connecting rod, so that the connecting rod is conveniently machined, secondary clamping is not needed, the overall machining efficiency is high, the machining precision is high, and the using effect is good.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical processing technology, specifically relating to a multi-station small connecting rod floating hydraulic clamp. Background Technology

[0002] A connecting rod, also known as a connecting rod, is a steel rod in a machine that transmits the reciprocating motion of a piston to the crankshaft or the rotational motion of a crankshaft to the piston. In reciprocating piston power machinery and compressors, the connecting rod connects the piston to the crankshaft, playing a crucial role in converting the reciprocating motion of the piston into the rotational motion of the crankshaft and transmitting the force acting on the piston to the crankshaft to output power. The connecting rod body typically consists of three parts: 1) the small end of the connecting rod, which connects to the piston pin and is usually a thin-walled circular ring structure. To reduce wear between the piston pin and the small end, a thin-walled bronze bushing is pressed into the small end bore; 2) the large end of the connecting rod, which connects to the crankshaft; and 3) the connecting rod body, which connects the small end and the large end. It is a long rod that is subjected to significant forces during operation. To prevent bending and deformation, the rod body must have sufficient rigidity. In addition, connecting rods are mostly made of steel, and the cross-section of the main body is usually circular or I-shaped with holes at both ends. Bronze bushings or needle roller bearings are installed in the holes for inserting pins to form a hinge.

[0003] The market demand for small gasoline-powered machinery is increasing significantly, which is driving up the demand for its parts processing. Among them, the processing of small connecting rods, which are the core components of the power system, is an important part. Currently, connecting rods are usually processed using a single-hole machining method. That is, after one hole is machined, the machined hole is used to position and machine another hole. This requires a second clamping, which is inefficient and has poor center distance accuracy. Therefore, there is a need for a fixture that can machine two holes of the connecting rod without a second clamping. Utility Model Content

[0004] The purpose of this invention is to address the problem that current connecting rod machining typically uses a single-hole machining method, where one hole is machined first, and then another hole is machined using the machined hole as a reference. This requires secondary clamping, resulting in low efficiency and poor center distance accuracy. The invention proposes a multi-station small floating hydraulic clamp for connecting rods, which eliminates the need for secondary clamping of the connecting rod and can directly machine both the large and small ends, thereby improving machining efficiency and accuracy.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows: a multi-station small connecting rod floating hydraulic clamp, including a base plate, a positioning plate arranged above the base plate, the base plate and the positioning plate being connected by a vertical plate to form a cavity, at least one hydraulic cylinder being installed in the cavity, a small end support and a large end support being installed on the positioning plate, a connecting rod workpiece being placed on the small end support and the large end support, a V-shaped block being provided at the small end of the connecting rod workpiece, a fixed positioning block being provided on one side of the large end of the connecting rod workpiece, a floating clamping mechanism and an elastic claw mechanism being installed on the positioning plate, the floating clamping mechanism abutting against the top of the connecting rod workpiece. Next, the pawl of the elastic pawl mechanism abuts against the other side of the large end of the connecting rod workpiece. The bottom of the floating clamping mechanism is connected to the telescopic end of the hydraulic cylinder. In use, by clamping the large end and small end of the connecting rod onto the large end support and small end support respectively, the pawl of the elastic pawl mechanism abuts the connecting rod against the fixed positioning block. At the same time, the small end of the connecting rod abuts against the V-block, thus positioning the connecting rod. By moving the hydraulic cylinder up and down, the floating clamping mechanism can be moved to fix the connecting rod, so as to facilitate the processing of the connecting rod. No secondary clamping is required, resulting in high overall processing efficiency, high processing accuracy, and good performance.

[0006] Furthermore, the floating clamping mechanism includes a primary floating plate, the bottom of which is threadedly connected to the telescopic end of the hydraulic cylinder. Two secondary floating plates are rotatably connected to the primary floating plate, and four pressure blocks are rotatably connected to the two secondary floating plates. All four pressure blocks abut against the top of the connecting rod workpiece. The hydraulic cylinder drives the primary floating plate to move up and down, which in turn drives the secondary floating plates to move up and down, and the secondary floating plates drive the pressure blocks to move, thereby achieving the fixing and loosening of the connecting rod.

[0007] Furthermore, a positioning block is provided on the outside of the floating clamping mechanism. The positioning block abuts against one side of the pressure block, and the floating clamping mechanism can be positioned by the positioning block.

[0008] Furthermore, the elastic pawl mechanism includes a base and a pawl, the base and the pawl are rotatably connected, a spring is provided between the base and the pawl, the base is mounted on a positioning plate, and the pawl abuts against the large end of the connecting rod workpiece. The pawl of the elastic pawl mechanism can apply force to the connecting rod workpiece to prevent the connecting rod from moving and ensure the positioning effect of the connecting rod.

[0009] Furthermore, the small-end support and the large-end support are fixed to the positioning plate by an interference fit.

[0010] Furthermore, both the small-end support and the large-end support are circular, and the small-end and large-end of the connecting rod workpiece are respectively engaged with the small-end support and the large-end support.

[0011] Furthermore, the V-shaped opening of the V-block is arranged horizontally and abuts against the small end of the connecting rod workpiece.

[0012] Furthermore, a protrusion is provided on the side of the fixed positioning block near the connecting rod workpiece, and the protrusion abuts against the connecting rod workpiece.

[0013] As can be seen from the above technical solutions, this utility model has the following advantages:

[0014] By engaging the large end and small end of the connecting rod with the large end support and small end support respectively, and using the pawl of the elastic pawl mechanism to abut the connecting rod against the fixed positioning block, while the small end of the connecting rod abuts against the V-block, the connecting rod is positioned. The up-and-down movement of the hydraulic cylinder drives the floating clamping mechanism to move, thereby fixing the connecting rod and facilitating its processing. No secondary clamping is required, resulting in high overall processing efficiency, high processing accuracy, and good performance. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the floating clamping mechanism of this utility model.

[0018] Figure 3 This is a cross-sectional structural diagram of the floating clamping mechanism of this utility model.

[0019] Figure 4 This is a three-dimensional structural diagram of the elastic claw mechanism of this utility model.

[0020] Figure 5 This is a three-dimensional structural diagram of the fixed positioning block of this utility model.

[0021] Figure 6 This is a three-dimensional structural diagram of the positioning block of this utility model.

[0022] Figure 7 This is a three-dimensional structural diagram of the V-shaped block of this utility model.

[0023] Figure 8 This is a cross-sectional structural diagram of the large-head support of this utility model.

[0024] Figure 9 This is a cross-sectional structural diagram of the small-head support of this utility model.

[0025] In the diagram: 1. Hydraulic cylinder; 2. Vertical plate; 3. Base plate; 4. V-block; 5. Floating clamping mechanism; 6. Small end support; 7. Positioning stop; 8. Elastic claw mechanism; 9. Positioning plate; 10. Large end support; 11. Connecting rod workpiece; 12. Fixed positioning block; 13. Secondary floating plate; 14. Primary floating plate. Detailed Implementation

[0026] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0027] like Figure 1-9 As shown, this embodiment proposes a multi-station small connecting rod floating hydraulic clamp, including a base plate 3, a positioning plate 9 above the base plate 3, and a cavity formed by the base plate 3 and the positioning plate 9 connected by a vertical plate 2. At least one hydraulic cylinder 1 is installed in the cavity. A small end support 6 and a large end support 10 are installed on the positioning plate 9, and the small end support 6 and the large end support 10 are fixed to the positioning plate 9 by an interference fit. A connecting rod workpiece 11 is placed on the small end support 6 and the large end support 10. Both the small end support 6 and the large end support 10 are circular, and the small end and the large end of the connecting rod workpiece 11 are respectively engaged with the small end support 6 and the large end support 10. A V-shaped block 4 is provided at the small end of the rod workpiece 11. The V-shaped opening of the V-shaped block 4 is arranged in a horizontal direction and abuts against the small end of the connecting rod workpiece 11. A fixed positioning block 12 is provided on one side of the large end of the connecting rod workpiece 11. A protrusion is provided on the side of the fixed positioning block 12 near the connecting rod workpiece 11. The protrusion abuts against the connecting rod workpiece 11. A floating pressing mechanism 5 and an elastic claw mechanism 8 are also installed on the positioning plate 9. The floating pressing mechanism 5 abuts against the top of the connecting rod workpiece 11. The claw of the elastic claw mechanism 8 abuts against the other side of the large end of the connecting rod workpiece 11. The bottom of the floating pressing mechanism 5 is connected to the telescopic end of the oil cylinder 1.

[0028] Specifically, the floating clamping mechanism 5 includes a primary floating plate 14. The bottom of the primary floating plate 14 is threadedly connected to the telescopic end of the hydraulic cylinder 1. Two secondary floating plates 13 are rotatably connected to the primary floating plate 14. Four pressure blocks are rotatably connected to the two secondary floating plates 13. All four pressure blocks abut against the top of the connecting rod workpiece 11. The hydraulic cylinder 1 drives the primary floating plate 14 to move up and down, which in turn drives the secondary floating plates 13 to move up and down. The secondary floating plates 13 then drive the pressure blocks to move, thus fixing and releasing the connecting rod. A positioning block 7 is provided on the outside of the floating clamping mechanism 5. The positioning block 7 abuts against one side of the pressure block, and the positioning block 7 can position the floating clamping mechanism 5.

[0029] The elastic pawl mechanism 8 includes a base and a pawl. The base and the pawl are rotatably connected. A spring is provided between the base and the pawl. The base is mounted on the positioning plate 9. The pawl abuts against the large end of the connecting rod workpiece 11. The pawl of the elastic pawl mechanism 8 can apply force to the connecting rod workpiece 11 to prevent the connecting rod from moving and ensure the positioning effect of the connecting rod.

[0030] In use, the large end and small end of the connecting rod are respectively engaged with the large end support 10 and the small end support 6. The connecting rod is then abutted against the fixed positioning block 12 by the pawl of the elastic pawl mechanism 8. At the same time, the small end of the connecting rod abuts against the V-block 4, thus positioning the connecting rod. The up and down movement of the hydraulic cylinder 1 drives the floating clamping mechanism 5 to move, thereby fixing the connecting rod. This facilitates the processing of the connecting rod without the need for secondary clamping, resulting in high overall processing efficiency, high processing accuracy, and good performance.

[0031] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-station small linkage floating hydraulic clamp, comprising a base plate (3), characterized in that, A positioning plate (9) is provided above the base plate (3). The base plate (3) and the positioning plate (9) are connected by a vertical plate (2) to form a cavity. At least one hydraulic cylinder (1) is installed in the cavity. A small end support (6) and a large end support (10) are installed on the positioning plate (9). A connecting rod workpiece (11) is placed on the small end support (6) and the large end support (10). A V-shaped block (4) is provided at the small end of the connecting rod workpiece (11). A fixed positioning block (12) is provided on one side of the large end of the connecting rod workpiece (11). A floating pressing mechanism (5) and an elastic claw mechanism (8) are also installed on the positioning plate (9). The floating pressing mechanism (5) abuts against the top of the connecting rod workpiece (11). The claw of the elastic claw mechanism (8) abuts against the other side of the large end of the connecting rod workpiece (11). The bottom of the floating pressing mechanism (5) is connected to the telescopic end of the hydraulic cylinder (1).

2. The multi-station miniature connecting rod floating hydraulic clamp according to claim 1, characterized in that, The floating clamping mechanism (5) includes a first-stage floating plate (14). The bottom of the first-stage floating plate (14) is threaded to the telescopic end of the oil cylinder (1). Two second-stage floating plates (13) are rotatably connected to the first-stage floating plate (14). Four pressure blocks are rotatably connected to the two second-stage floating plates (13). All four pressure blocks abut against the top of the connecting rod workpiece (11).

3. The multi-station miniature connecting rod floating hydraulic clamp according to claim 2, characterized in that, A positioning block (7) is provided on the outside of the floating pressing mechanism (5), and the positioning block (7) abuts against one side of the pressing block.

4. The multi-station miniature connecting rod floating hydraulic clamp according to claim 1, characterized in that, The elastic pawl mechanism (8) includes a base and a pawl. The base and the pawl are rotatably connected. A spring is provided between the base and the pawl. The base is mounted on the positioning plate (9). The pawl abuts against the large end of the connecting rod workpiece (11).

5. The multi-station miniature connecting rod floating hydraulic clamp according to claim 1, characterized in that, The small end support (6) and the large end support (10) are fixed on the positioning plate (9) by interference fit.

6. The multi-station miniature connecting rod floating hydraulic clamp according to claim 5, characterized in that, Both the small end support (6) and the large end support (10) are circular. The small end and the large end of the connecting rod workpiece (11) are respectively engaged with the small end support (6) and the large end support (10).

7. The multi-station miniature connecting rod floating hydraulic clamp according to claim 1, characterized in that, The V-shaped opening of the V-block (4) is arranged horizontally and abuts against the small end of the connecting rod workpiece (11).

8. The multi-station miniature connecting rod floating hydraulic clamp according to claim 6, characterized in that, The fixed positioning block (12) has a protrusion on the side near the connecting rod workpiece (11), and the protrusion abuts against the connecting rod workpiece (11).

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