Hydraulic gear pump body composite tool

Abstract

The utility model relates to a tool used in the technical field of hydraulic gear pump production, in particular to a hydraulic gear pump body composite tool. The tool structurally comprises a tool base and a hydraulic oil cylinder, the upper end of a shaft core of the hydraulic oil cylinder is connected with a rotating pull disc through a center bolt, a locking hole and a diagonal arc groove are formed in the rotating pull disc, and an oil cylinder fixing sleeve on the hydraulic oil cylinder penetrates through the diagonal arc groove to be connected with the bottom of the tool base. A locking hole is formed in the tool base, a pump body pull rod is arranged on a hydraulic gear pump body to be machined, the pump body pull rod penetrates through the tool base downwards and then is inserted and embedded in the locking hole, and the pump body pull rod is locked in the locking hole through rotation of the rotary pull disc. The hydraulic gear pump body can be quickly mounted and dismounted, the product turnover frequency is reduced, the risks of collision, scratching and the like in the turnover process are avoided, the labor intensity of workers is greatly reduced, and the safety risk in the machining process is avoided.

Description

Technical Field

[0001] The utility model relates to a tooling for the production technology field of a hydraulic gear pump, in particular to a composite tooling for a hydraulic gear pump body. Background Technique

[0002] In the existing mechanical equipment, for the batch processing of the gear holes and sealing grooves of a hydraulic gear pump, most of the existing toolings are generally manufactured by manual pressing or axial clamping. The existing process requires the cooperation of multiple machines and multiple processes to complete the processing, and only one piece can be processed at a time. In batch production and processing, it occupies more machine tools and personnel, and the production cost is high. Moreover, multiple clampings have always restricted the quality stability of product dimensions, geometric tolerances, etc. When processing other series of products, it is necessary to disassemble, replace, and adjust the equipment and tooling fixtures, which is time-consuming and laborious and affects the timeliness of product delivery.

[0003] Low cost, high efficiency, quick and convenient product replacement, and stable product quality are the technical problems to be solved by the present invention. The existing processing tooling is fixed by positioning through process pin holes and manual pressing of bolts. When using this method for processing operations such as boring holes and milling sealing grooves, the prerequisite for the above processes is that the two sides of the product must be precisely ground. This has caused problems such as bumps, scratches, and padding damage to the precisely ground surfaces during the subsequent processing process. When it is necessary to replace and process other series of products, the replacement and adjustment of the tooling are time-consuming and laborious. When the inspection is unqualified, it needs to be adjusted multiple times, and the adjustment work is carried out based on processing operation experience.

[0004] The existing process for processing such products requires 4 sets of equipment (disc grinding machine, diamond boring machine, CNC milling machine, machining center), 5 processes, and 4 transfers to complete the processing. It occupies more machine tools and personnel, and there are problems such as large cumulative errors in batch processing, high production cost, low production efficiency, high labor cost, and unstable product quality. Summary of the Invention

[0005] In order to solve the problems of the existing technology, the utility model provides a composite tooling for a hydraulic gear pump body, which can realize the rapid installation and disassembly of the hydraulic gear pump body, not only reduces the product turnover frequency, avoids risks such as bumps and scratches during the turnover process, but also greatly reduces the labor intensity of workers and avoids safety risks during the processing process.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A composite tooling for a hydraulic gear pump body, comprising a tooling base and a hydraulic cylinder. The upper end of the shaft core of the hydraulic cylinder is connected with a rotating pull plate through a central bolt. The rotating pull plate is provided with a locking hole and a diagonal arc groove. The cylinder fixing sleeve on the hydraulic cylinder passes through the diagonal arc groove and is connected to the bottom of the tooling base. A pump body pull rod is arranged on the hydraulic gear pump body to be machined. The pump body pull rod passes downward through the tooling base and is inserted into the locking hole. By rotating the rotating pull plate, the pump body pull rod is locked in the locking hole.

[0008] Preferably, a connecting thread is arranged at the upper end of the pump body pull rod for screwing into the installation screw hole of the hydraulic gear pump body. The lower end of the pump body pull rod is provided with a narrowed locking part. The locking hole is a strip-shaped hole. One side of the strip-shaped hole has a larger aperture and the other side has a smaller aperture. The larger aperture is for the pump body pull rod to insert, and the smaller aperture is for the pump body pull rod to be locked in the locking hole.

[0009] Preferably, a pump body positioning plate is arranged above the tooling base.

[0010] Preferably, a manual lever is arranged on the rotating pull plate.

[0011] Preferably, there are two pump body pull rods, which are respectively installed at the bottom diagonals of the hydraulic gear pump body to be machined.

[0012] The beneficial effects brought by the technical solution provided by the present utility model are as follows:

[0013] The composite tooling for a hydraulic gear pump body of the present utility model not only reduces the product turnover frequency, avoids risks such as bumping and scratching during the turnover process, but also greatly reduces the labor intensity of workers and avoids safety risks during the processing. After using the present utility model, the safety and stability of product clamping are improved, the shape and position accuracy required by the product are ensured, and the product qualification rate is greatly improved; through the upgrade of the positioning structure, the rapidity and convenience of replacing different models of products are realized, and seamless connection is truly achieved, greatly reducing the product production and processing time, shortening the supply cycle, and ensuring the timeliness of product delivery. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative work, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is the overall structure top view of a composite tooling for a hydraulic gear pump body of the present utility model;

[0016] Figure 2 For Figure 1 partial structural schematic diagram of the A-A cross-section;

[0017] Figure 3 is a structural schematic diagram of the rotary puller plate of a hydraulic gear pump body composite tooling of the present utility model. Specific embodiments

[0018] To make the objectives, technical solutions and advantages of the present utility model clearer, the following will further describe the embodiments of the present utility model in detail with reference to the accompanying drawings. Embodiment

[0019] As shown in the attached Figures 1-3 figures, a hydraulic gear pump body composite tooling of this embodiment includes a tooling base 1 and a hydraulic cylinder 2. The upper end of the shaft core 3 of the hydraulic cylinder 2 is connected with a rotary puller plate 5 through a central bolt 4. The rotary puller plate 5 is provided with a locking hole 6 and a diagonal arc groove 7. The cylinder fixed sleeve 8 on the hydraulic cylinder 2 passes through the diagonal arc groove 7 and is connected to the bottom of the tooling base 1. A pump body pull rod 10 is arranged on the hydraulic gear pump body 9 to be processed. After the pump body pull rod 10 passes downward through the tooling base 1, it is inserted and embedded in the locking hole 6. By rotating the rotary puller plate 5, the pump body pull rod 10 is locked in the locking hole 6.

[0020] In this embodiment, the upper end of the pump body pull rod 10 is provided with a connecting thread for screwing into the installation screw hole of the hydraulic gear pump body 9. The lower end of the pump body pull rod 10 is provided with a narrowed locking portion 11. The locking hole 6 is a strip-shaped hole. One side of the strip-shaped hole has a larger aperture and the other side has a smaller aperture. The larger aperture is for the insertion of the pump body pull rod 10, and the smaller aperture is for the pump body pull rod 10 to be locked in the locking hole.

[0021] In this embodiment, a pump body positioning plate 12 is arranged above the tooling base. A manual lever 13 is arranged on the rotary puller plate 5.

[0022] There are two pump body pull rods 10 in this embodiment, which are respectively installed at the bottom diagonals of the hydraulic gear pump body 9 to be processed.

[0023] The power source for the reciprocating motion of the device is the hydraulic cylinder 2, which is fixed to the lower end face of the tooling base 1 by four cylinder fixed sleeves 8 with four cylinder fixing bolts. The rotary puller plate 5 is fixed together with the hydraulic cylinder 2 through the cylinder center bolt 4. During installation, the four cylinder fixed sleeves 8 pass through the diagonal arc grooves 7 of the rotary puller plate 5 in sequence. The pump body positioning plate 12 is installed on the upper end face of the tooling base through positioning pin holes and fixed with 4 internal hexagonal bolts; the operator controls the extension and retraction of the core shaft 3 of the hydraulic cylinder 2 by controlling the oil circuit direction through a manual valve, driving the rotary puller plate 5 to reciprocate up and down in the direction of the cylinder fixed sleeve 8.

[0024] Before using the composite hydraulic device of the present invention, first install the two pump body tie rods 10 on the diagonal threaded holes of the pump body. Push the manual control valve to confirm that the hydraulic cylinder 2 is in the extended state. Move the manual lever 13 of the rotary pull plate 5 to the 90-degree position facing the tooling base 1. Then install the pump body 9 on the pump body positioning plate 12 and position it with the process pin holes. Move the manual lever of the rotary pull plate 13 to the left until it reaches the limit. Hook the lower end of the pump body tie rod 10 on the diagonal arc grooves 7 of the rotary pull plate 5. Push the manual control valve to make the hydraulic cylinder 2 in the retracted state. The rotary pull plate 5 is force-linked and slides down along the cylinder fixed sleeve 8 to tighten the pump body tie rod 10 and the pump body 9. At this time, the machine tool can be started to process products in sequence.

[0025] After the machining process of the pump body 9 is completed, push the manual control valve to make the hydraulic cylinder 2 in the extended state. Move the manual lever of the rotary pull plate 5 to the 90-degree position facing the tooling base 1. Remove the pump body 9 and remove the pump body tie rod 10 from the pump body, thus completing one machining process.

[0026] A hydraulic gear pump body composite tooling of this embodiment has the following characteristics:

[0027] 1. Suitable for mass production with low production cost;

[0028] 2. Hydraulic tensioning at multiple stations reduces the labor intensity of workers;

[0029] 3. Process optimization and process integration result in high product quality stability;

[0030] 4. Quick replacement of multiple series of products with high production efficiency.

[0031] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A hydraulic gear pump body composite tooling, comprising a tooling base and a hydraulic cylinder, characterized in that: The upper end of the shaft core of the hydraulic oil cylinder is connected to a rotating pull plate through a center bolt, and a locking hole and a diagonal arc groove are provided on the rotating pull plate. The cylinder fixing sleeve on the hydraulic oil cylinder passes through the diagonal arc groove to connect to the bottom of the tooling base. A pump body pull rod is provided on the hydraulic gear pump body to be processed. After the pump body pull rod passes downward through the tooling base, it is inserted into the locking hole. By rotating the rotating pull plate, the pump body pull rod is locked in the locking hole.

2. A hydraulic gear pump body composite tooling according to claim 1, characterized in that: A connecting thread is provided at the upper end of the pump body tie rod for being screwed into the mounting screw hole of the hydraulic gear pump body. A narrowed locking portion is provided at the lower end of the pump body tie rod. The locking hole is a strip-shaped hole with a larger aperture on one side and a smaller aperture on the other side. The large aperture is used for inserting the pump body tie rod, and the small aperture is used for locking the pump body tie rod in the locking hole.

3. The hydraulic gear pump body composite tooling according to claim 1, characterized in that: A pump body positioning plate is arranged above the tooling base.

4. The hydraulic gear pump body composite tooling according to claim 1, characterized in that: The rotating pull plate is provided with a manual lever.

5. The hydraulic gear pump body composite tooling according to claim 1, characterized in that: There are two pump body pull rods, which are respectively installed at the bottom diagonals of the hydraulic gear pump body to be processed.

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