Mud pump connecting rod fine boring hole forming tool

Abstract

The utility model provides a mud pump connecting rod fine boring hole forming tool. The mud pump connecting rod fine boring hole forming tool specifically comprises a main base plate, side positioning plates, side positioning columns and a connecting rod spherical surface. The main base plate is a plate with a mounting groove formed in the side edge. The two ends of the connecting rod spherical surface are arranged at the two ends of the upper surface of the main base plate. The three groups of side positioning plates are vertical to the main base plate and surround one end part of the spherical surface of the connecting rod at three surfaces at intervals; the positioning column is installed on the upper surface of the main base plate at the other end of the spherical surface of the connecting rod through a bolt and used for positioning. Compared with the prior art, the tool is good in mounting and positioning effect, and particularly after the spherical surface of the connecting rod is finely ground, the position error between the spherical surface of the connecting rod and a bearing hole is required to be smaller than 0.025 mm.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-temperature airflow recovery equipment, in particular to a mud pump connecting rod precision boring forming tool. Background Art

[0002] Currently, high-torque, integrated connecting rods for mud pumps are directly connected to the crankshaft bearing end, eliminating the bearing seat. This requires higher precision for the connecting rod, and more complex requirements for center distance accuracy and coaxiality during installation. However, the current manufacturing process is mostly single-piece, without a standard reference. Most processes are performed after the base surface is leveled, relying on CNC milling to find the edges and align, then tighten and form the parts. This can cause deviations between the connecting rod ball head and the center distance. These deviations can cause the entire connecting rod to be scrapped, and even affect the overall assembly quality. Summary of the Invention

[0003] Technical solution: In order to solve the above-mentioned technical problems, the utility model provides a mud pump connecting rod precision boring and forming tool, which specifically includes a main pad, a side positioning plate, a side positioning column, and a connecting rod spherical surface; the main pad is a plate with an installation groove on the side; both ends of the connecting rod spherical surface are arranged on the two end portions installed on the upper surface of the main pad; the side positioning plates are provided in three groups, all of which are perpendicular to the main pad and spaced apart and surround one end position of the connecting rod spherical surface on three sides; the positioning column is installed on the upper surface of the main pad at the other end position of the connecting rod spherical surface by bolts for positioning.

[0004] As an improvement, the connecting rod spherical surface includes a large end spherical surface, a connecting rod, and a small end spherical surface; the large end spherical surface is arranged around the side positioning plate and connects the connecting rod to the small end spherical surface at the other end.

[0005] As an improvement, it also includes equal-height pads, small-end pads, and large-end pads; the large-end pad is installed between the large-end spherical surface and the main pad; the equal-height pad is installed between the connecting rod and the main pad; the small-end pad is installed between the small-end spherical surface and the main pad.

[0006] As an improvement, it also includes hexagon socket bolt 1 and hexagon socket bolt 2; the hexagon socket bolt 1 is used to install the upper surface of the equal height pad and the bottom surface of the connecting rod; the hexagon socket bolt 2 is used to install the spherical bottom surface of the small end face and the upper surface of the small end pad.

[0007] As an improvement, two positioning posts are provided and are installed at intervals and symmetrically on the spherical end of the small end surface.

[0008] Beneficial Effects: Compared with conventional fixtures, the fixture proposed in this utility model has better installation and positioning effects, especially after the connecting rod spherical surface is finely ground, the required position error with the bearing hole is less than 0.025mm. Re-clamping accuracy is improved, eliminating the need for repeated position calibration after installation. Only the parallelism of the two base surfaces needs to be verified to be less than 0.02mm before starting processing, significantly improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a three-dimensional diagram of the device of the present utility model.

[0010] Figure 2 It is the front view of the device of the utility model.

[0011] Figure 3 It is a top view of the device of the present utility model.

[0012] In the figure: main pad 1, side positioning plate 2, connecting rod spherical surface 3, equal height pad 4, hexagon socket bolt 1 5, large end pad 6, bolt 7, small end pad 8, hexagon socket bolt 2 9, side positioning column 10. DETAILED DESCRIPTION

[0013] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0014] Glass fiber

[0015] See Figure 1 As shown, a mud pump connecting rod precision boring and forming tool includes a main pad 1, a side positioning plate 2, a side positioning column 10, and a connecting rod spherical surface 3; the main pad 1 is a plate with a mounting groove on the side; both ends of the connecting rod spherical surface 3 are arranged on the two end portions of the upper surface of the main pad 1; the side positioning plates 2 are provided in three groups, all of which are perpendicular to the main pad 1 and spaced apart around one end position of the connecting rod spherical surface 3 on three sides; the positioning column 10 is installed on the upper surface of the main pad 1 at the other end position of the connecting rod spherical surface 3 by a bolt 7 for positioning.

[0016] See Figure 3 As shown, the connecting rod spherical surface 3 includes a large end spherical surface 31, a connecting rod 32, and a small end spherical surface 33; the large end spherical surface 31 is arranged around the side positioning plate 2 and connects the connecting rod 32 to the small end spherical surface 33 at the other end.

[0017] See Figure 2 As shown, it also includes an equal-height pad block 4, a small-end pad block 8, and a large-end pad block 6; the large-end pad block 6 is installed between the large-end spherical surface 31 and the main pad 1; the equal-height pad block 4 is installed between the connecting rod 32 and the main pad 1; the small-end pad block 8 is installed between the small-end spherical surface 33 and the main pad 1.

[0018] Furthermore, it includes a first hexagon socket head bolt 5 and a second hexagon socket head bolt 9; the first hexagon socket head bolt 5 is used to attach the upper surface of the equal height spacer 4 and the bottom surface of the connecting rod 32; the second hexagon socket head bolt 9 is used to attach the bottom surface of the small end spherical surface 33 and the upper surface of the small end spacer 8. Preferably, two positioning posts 10 are provided, spaced apart and symmetrically installed at the ends of the small end spherical surface 33.

[0019] The main backing plate 1 in this fixture is required to be parallel to the bottom surface of the equipment. Due to deformation after machining and installation of the positioning device, all positioning columns are simultaneously fine-machined on the machine tool after installation to ensure uniform workpiece positioning and eliminate repeated installation errors. The arc bottom and the large end bottom surfaces are both located with three-point cylindrical pins to ensure uniform contact. The side positioning columns are perpendicular to the spherical surface and are locked by the large end side pressure plate bolts. The force is applied to the two side positioning columns to ensure uniform positioning. This ensures arc accuracy and prevents position deviation during secondary clamping.

[0020] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A mud pump connecting rod precision boring and forming tool, characterized by: The invention comprises a main pad (1), a side positioning plate (2), a side positioning column (10), and a connecting rod spherical surface (3); the main pad (1) is a plate with a mounting groove on the side; both ends of the connecting rod spherical surface (3) are arranged on the two ends of the upper surface of the main pad (1); the side positioning plates (2) are provided in three groups, which are perpendicular to the main pad (1) and surround one end position of the connecting rod spherical surface (3) at intervals on three sides; the side positioning column (10) is installed on the upper surface of the main pad (1) at the other end position of the connecting rod spherical surface (3) by means of bolts (7) for positioning.

2. The mud pump connecting rod precision boring and forming tool according to claim 1, characterized in that: The connecting rod spherical surface (3) comprises a large end spherical surface (31), a connecting rod (32), and a small end spherical surface (33); the large end spherical surface (31) is arranged around the side positioning plate (2) and connects the connecting rod (32) to the small end spherical surface (33) at the other end.

3. The mud pump connecting rod precision boring and forming tool according to claim 2, characterized in that: It also includes a uniform height pad (4), a small end pad (8), and a large end pad (6); the large end pad (6) is installed between the large end spherical surface (31) and the main pad (1); the uniform height pad (4) is installed between the connecting rod (32) and the main pad (1); and the small end pad (8) is installed between the small end spherical surface (33) and the main pad (1).

4. The mud pump connecting rod precision boring and forming tool according to claim 3, characterized in that: It also includes a first hexagon socket bolt (5) and a second hexagon socket bolt (9); the first hexagon socket bolt (5) is used to install the upper surface of the equal height pad (4) and the bottom surface of the connecting rod (32); the second hexagon socket bolt (9) is used to install the bottom surface of the small end spherical surface (33) and the upper surface of the small end pad (8).

5. The mud pump connecting rod precision boring and forming tool according to claim 2, characterized in that: Two side positioning columns (10) are provided and are installed at intervals and symmetrically on the end of the small end spherical surface (33).

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