A multi-station high-pressure pump body two-way rotation processing tooling

Abstract

The present invention relates to a multi-station high-pressure pump body two-way rotation processing tooling, which adopts a structure integrating oil brake disc tailstock and oil brake four-axis indexing disc on both sides of the base, and forms a synchronous rotation system through rigid connection of the crossbeam. The indexing disc realizes indexing rotation through the first driving unit, and the double rotating shafts on the crossbeam are synchronously driven by the second driving unit to drive the pump body to rotate circumferentially. With the axial pressing function of the corner hydraulic cylinder, a combined action of pressing and rotating is realized under the action of the plane thrust bearing. The tailstock unit adopts a driven synchronous traction structure, and the indexing disc and the tailstock are synchronously braked through the hydraulic braking system. This tooling significantly reduces the repeated positioning error through the two-way rotation mechanism, supports multi-station linkage processing, and has the characteristics of rapid positioning, high-precision maintenance and strong processing stability, and is especially suitable for the efficient processing of complex curved surfaces of high-pressure pump bodies.

Description

Technical Field

[0001] The present invention relates to the technical field of pump body processing equipment, and particularly to a multi-station high-pressure pump body two-way rotation processing tooling. Background Art

[0002] As a core component of fluid machinery, the high-pressure pump body has a complex structure and often requires processing of multiple groups of precision hole systems, curved surfaces, and end face features. In traditional processing, a tooling structure with a unidirectional rotating indexing plate and a tailstock clamping is mostly used. The indexing plate is used to drive the bridge plate to tilt forward and backward through indexing to realize the switching of different processing surfaces. However, such tooling has significant deficiencies: the pump body is fixed on the bridge plate through a hydraulic clamping mechanism. Although the bridge plate can be tilted with the indexing plate to adjust the processing posture, the pump body itself cannot rotate circumferentially on the bridge plate. For complex curved surfaces and hole systems that require circumferential processing at multiple angles, it is still necessary to frequently disassemble the pump body and reposition and clamp it, resulting in the accumulation of repeated positioning errors, making it difficult to meet the processing requirements of the high-precision sealing surface of the high-pressure pump body, and seriously restricting the processing efficiency and consistency. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies existing in the prior art and provide a multi-station high-pressure pump body two-way rotation processing tooling.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A multi-station high-pressure pump body two-way rotation processing tooling, including a base. Tailstock units and indexing plate units are respectively arranged on both sides of the base, and a rigid linkage is formed between the two through a bridge plate. The indexing plate unit is connected with a first driving unit for driving its indexing rotation. The tailstock units and the indexing plate units are respectively integrated with hydraulic braking mechanisms and achieve synchronous braking through a hydraulic power system. A pump body clamping mechanism is arranged on the bridge plate. The pump body clamping mechanism includes a rotating shaft for driving the circumferential rotation of the pump body and a hydraulic actuator for axially pressing the pump body. The hydraulic actuator is configured to allow the rotating shaft to drive the circumferential rotation of the pump body while axially pressing the pump body. The rotating shaft is connected with a second driving unit for driving its circumferential rotation. The disk of the tailstock unit is a driven structure, and its rotational freedom is synchronously pulled by the rotation of the indexing plate of the indexing plate unit.

[0005] As a preferred technical solution of the present invention, the tailstock unit is an oil-brake disk tailstock, and the indexing plate unit is an oil-brake four-axis indexing plate. The hydraulic power system is respectively connected to the hydraulic braking mechanisms of the oil-brake disk tailstock and the oil-brake four-axis indexing plate through hydraulic pipelines to achieve synchronous braking of the indexing plate of the oil-brake four-axis indexing plate and the disk of the oil-brake disk tailstock.

[0006] As a preferred technical solution of the present invention, the hydraulic actuator is a rotary cylinder, and its output shaft is connected to a pressing plate. The bottom of the pressing plate is axially linked with the rotary shaft through a flat thrust bearing. A positioning groove for placing the pump body is provided at the top of the rotary shaft. After the pump body is embedded in the positioning groove, its circumferential position is fixed. The stationary ring of the flat thrust bearing is fixedly connected to the pressing plate, and the rotating ring is attached to the end face of the pump body on the rotary shaft.

[0007] As a preferred technical solution of the present invention, a jack for the output shaft of the rotary cylinder to pass through is provided at the center of the pressing plate. A positioning pin penetrating the jack and the output shaft is provided on the side of the pressing plate. Snap rings are sleeved at both ends of the positioning pin, and the inner side walls of the snap rings form a limiting fit with the outer side surface of the pressing plate.

[0008] As a preferred technical solution of the present invention, two groups of the rotary shafts are symmetrically arranged on both sides of the hydraulic actuator, and the center of the pressing plate is fixedly connected to the output shaft of the hydraulic actuator. Angular contact ball bearings are provided outside each rotary shaft and are installed in the mounting holes of the bridge plate. The two groups of rotary shafts are synchronously driven by a second driving mechanism.

[0009] As a preferred technical solution of the present invention, the second driving mechanism includes a main shaft, a driving helical gear fixed to the main shaft, and two driven helical gears. A fixed base is provided at the bottom of the bridge plate. The two rotary shafts extend to the fixed base and each is fixedly connected to a driven helical gear. A speed reducer is provided at the bottom of the fixed base, and its output shaft is connected to the main shaft extending into the base. The driving helical gear meshes with the two driven helical gears for transmission.

[0010] As a preferred technical solution of the present invention, the hydraulic pipeline includes an oil inlet interface plate, a first brake oil inlet pipe, and a second brake oil inlet pipe, which are respectively connected to the hydraulic brake mechanisms of the oil brake disc tailstock and the oil brake four-axis indexing plate.

[0011] As a preferred technical solution of the present invention, an oil delivery pipe coaxially arranged with the indexing plate is penetrated on the oil brake four-axis indexing plate. The oil delivery pipe rotates synchronously with the indexing plate. Independent first and second oil delivery channels are provided in the oil delivery pipe. The hydraulic pipeline includes a first hydraulic inlet pipe and a second hydraulic inlet pipe communicating with the first and second oil delivery channels. The two hydraulic inlet pipes supply oil to the two oil delivery channels through a transfer mechanism. The other ends of the first hydraulic inlet pipe and the second hydraulic inlet pipe are connected to the oil inlet interface plate. A first oil guiding channel and a second oil guiding channel communicating with the rotary cylinder are provided in the bridge plate. The other ends of the two guiding channels are connected to the two oil delivery channels.

[0012] As a preferred technical solution of the present invention, the adapter mechanism includes an adapter sleeve, the outer end of the oil pipe is inserted into the adapter sleeve, the first hydraulic oil inlet pipe and the second hydraulic oil inlet pipe are made of rigid material, the outer end oil delivery ports of the first oil delivery channel and the second oil delivery channel are arranged at intervals on the oil delivery pipe, the oil delivery pipe rotates relative to the adapter sleeve and two annular sealed cavities arranged at intervals are formed therebetween, the two annular sealed cavities correspond to the two outer end oil delivery ports, and the connection positions of the first hydraulic oil inlet pipe and the second hydraulic oil inlet pipe correspond to the two annular sealed cavities.

[0013] As a preferred technical solution of the present invention, the two ends of the bridge plate are respectively fixed to the dividing plate and the disc through a supporting and fixing plate. Two radial slots are symmetrically arranged on the dividing plate and / or the disc. The two radial slots are far away from each other and have an opening for the nut to enter. The two radial slots are provided with a strip-shaped notch connected to the opening at one end facing the supporting and fixing plate. The supporting and fixing plate is threadedly connected to the nut through a fastener passing through the strip-shaped notch, so that the supporting and fixing plate and the bridge plate remain in close fit.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the multi-station high-pressure pump body bidirectional rotation processing tooling provided by the present invention significantly improves the processing efficiency, positioning accuracy and processing stability through innovative structural design and coordinated control of the hydraulic system; the dividing plate unit drives the bridge plate to tilt in both directions through the first drive unit, and synchronously pulls the driven disc of the tailstock unit to achieve rapid switching of the processing posture of the bridge plate and the pump body; at the same time, the rotating shaft is driven by the second drive unit to rotate the pump body circumferentially, forming a compound motion of bridge plate tilting and pump body rotation, and multi-angle and multi-station continuous processing can be completed without disassembly, greatly reducing repeated positioning errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 is a cross-sectional view of the present invention;

[0017] Figure 3 It is a structural schematic diagram of another perspective of the present invention;

[0018] Figure 4 It is a structural diagram of the hydraulic actuator in the present invention;

[0019] Figure 5 This is a schematic diagram of the structure of the bridge plate, support and fixing plate, and oil pipeline in the present invention;

[0020] Figure 6 This is a schematic diagram of the structure of the hydraulic actuator, support fixing plate, and oil pipeline in the present invention;

[0021] Figure 7It is the top view of the oil pipeline in the present invention;

[0022] Figure 8 It is the sectional view taken along line A-A of the present invention;

[0023] Figure 9 It is the structural schematic diagram of the disc or index plate in the present invention.

[0024] Reference numerals: 1, base; 2, tailstock unit; 3, index plate unit; 4, carriage; 5, first driving unit; 6, rotating shaft; 7, hydraulic actuator; 8, second driving unit; 9, index plate; 10, disc; 11, planar thrust bearing; 12, positioning groove; 13, jack; 14, positioning pin; 15, circlip; 16, angular contact ball bearing; 17, mounting hole; 18, main shaft; 19, driving helical gear; 20, driven helical gear; 21, fixed base; 22, reducer; 23, oil inlet interface plate; 24, first brake oil inlet pipe; 25, second brake oil inlet pipe; 26, oil pipeline; 27, first oil delivery channel; 28, second oil delivery channel; 29, first hydraulic oil inlet pipe; 30, second hydraulic oil inlet pipe; 31, first oil guiding channel; 32, second oil guiding channel; 33, pressing plate; 34, nut; 35, strip-shaped notch; 36, adapter sheath; 37, outer end oil delivery port; 38, annular sealing cavity; 39, support fixing plate; 40, radial slot; 41, opening. Detailed implementation manners

[0025] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments and the drawings. However, the following embodiments are only the preferred embodiments of the present invention and not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present invention.

[0026] The specific embodiments of the present invention will be described below with reference to the drawings.

[0027] As Figures 1 to 9A multi-station high-pressure pump body two-way rotation processing tooling is shown, including a base 1. Tailstock units 2 and indexing plate units 3 are respectively arranged on both sides of the base 1. A rigid linkage is formed between the two through a cross bridge 4. The indexing plate unit 3 is connected with a first driving unit 5 that drives its indexing rotation; both the tailstock unit 2 and the indexing plate unit 3 are integrated with hydraulic braking mechanisms and achieve synchronous braking through a hydraulic power system. A pump body clamping mechanism is provided on the cross bridge 4. The pump body clamping mechanism includes a rotating shaft 6 that drives the circumferential rotation of the pump body and a hydraulic actuator 7 that axially presses the pump body. The hydraulic actuator 7 is configured to allow the rotating shaft 6 to drive the circumferential rotation of the pump body while axially pressing the pump body; the rotating shaft 6 is connected with a second driving unit 8 that drives its circumferential rotation; the disc 10 of the tailstock unit 2 is a driven structure, and its rotational freedom is synchronously pulled by the rotation of the indexing plate 9 of the indexing plate unit 3.

[0028] The tailstock unit 2 and the indexing plate unit 3 achieve synchronous braking of the hydraulic braking mechanisms through a hydraulic power system, eliminating the rotational phase deviation between the indexing plate 9 and the tailstock. In this application, the synchronous braking principle of the hydraulic power unit controlling the braking mechanisms of the tailstock and the indexing plate 9, the specific mechanical structure of the first driving unit 5 (such as a worm and gear indexing mechanism), and the control method for the indexing rotation of the indexing plate 9 all adopt existing mature technologies, and this application does not make substantial improvements to their working principles. The core innovation point of the present invention lies in the collaborative design of the compound motion mechanism of the two-way tilting of the cross bridge 4 and the circumferential rotation of the pump body, the hydraulic clamping and rotation decoupling structure, and the rigid linkage assembly.

[0029] The multi-station high-pressure pump body two-way rotation processing tooling provided by the present invention significantly improves the processing efficiency, positioning accuracy, and processing stability through innovative structural design and collaborative control of the hydraulic system; the indexing plate unit 3 drives the two-way tilting of the cross bridge 4 through the first driving unit 5, synchronously pulling the driven disc 10 of the tailstock unit 2 to achieve rapid switching of the processing postures of the cross bridge 4 and the pump body; at the same time, the rotating shaft 6 drives the circumferential rotation of the pump body by the second driving unit 8, forming a compound motion of the tilting of the cross bridge 4 and the self-rotation of the pump body, and continuous processing of multiple angles and multiple stations can be completed without disassembly, greatly reducing the repeated positioning error.

[0030] The tailstock unit 2 is an oil-brake disc tailstock, and the indexing plate unit 3 is an oil-brake four-axis indexing plate; the hydraulic power system is respectively connected to the hydraulic braking mechanisms of the oil-brake disc tailstock and the oil-brake four-axis indexing plate 9 through hydraulic pipelines to achieve synchronous braking of the indexing plate 9 of the oil-brake four-axis indexing plate 9 and the disc 10 of the oil-brake disc tailstock.

[0031] The hydraulic actuator 7 is a rotary hydraulic cylinder, whose output shaft is connected to the pressure plate 33. The bottom of the pressure plate 33 is axially linked with the rotating shaft 6 through a flat thrust bearing 11. A positioning groove 12 for placing the pump body is provided at the top of the rotating shaft 6. After the pump body is embedded in the positioning groove 12, its circumferential position is fixed. The stationary ring of the flat thrust bearing 11 is fixedly connected to the pressure plate 33, and the rotating ring is in contact with the end face of the pump body on the rotating shaft 6. The rotary hydraulic cylinder is used to drive the pressure plate 33 to perform the axial pressing action, and cooperate with the flat thrust bearing 11 to realize the decoupling of the pressing force transmission and the free rotation of the rotating shaft 6, ensuring that the pump body can still be accurately driven by the rotating shaft 6 under the high-pressure clamping state, and avoiding workpiece displacement or tool vibration caused by the fluctuation of the pressing force.

[0032] A jack 13 for the output shaft of the rotary hydraulic cylinder to pass through is provided at the center of the pressure plate 33. A positioning pin 14 passing through the jack 13 and the output shaft is provided on the side of the pressure plate 33. Snap rings 15 are sleeved at both ends of the positioning pin 14. The inner side walls of the snap rings 15 are in limit fit with the outer side of the pressure plate 33. The rotary hydraulic cylinder realizes the one-key pressing and loosening of the pump body through the left-handed downward pressing and right-handed lifting actions of the pressure plate 33. Cooperating with the limit structure of the positioning pin 14 and the snap rings 15, it ensures that the movement track of the pressure plate 33 is accurately controllable, shortens the non-processing time, and is especially suitable for batch production scenarios.

[0033] Two groups of rotating shafts 6 are symmetrically arranged on both sides of the hydraulic actuator 7. The center of the pressure plate 33 is fixedly connected to the output shaft of the hydraulic actuator 7. Angular contact ball bearings 16 are arranged outside each rotating shaft 6 and are installed in the mounting holes 17 of the bridge plate 4. The two groups of rotating shafts 6 are synchronously driven by the second driving mechanism.

[0034] The second driving mechanism includes a main shaft 18, a driving helical gear 19 fixed to the main shaft 18 and two driven helical gears 20. A fixed base 21 is provided at the bottom of the bridge plate 4. The two rotating shafts 6 extend to the fixed base 21 and each is fixedly connected with a driven helical gear 20. A speed reducer 22 is provided at the bottom of the fixed base 21, and its output shaft is connected to the main shaft 18 extending into the base. The driving helical gear 19 meshes with the two driven helical gears 20 for transmission. The double rotating shafts 6 are synchronously driven by a single speed reducer 22 through a helical gear set, ensuring uniform force on both sides of the pump body. The combined degrees of freedom of the tilting of the bridge plate 4 and the circumferential rotation of the pump body expand the processing range, support the combined cutting of complex curved surfaces and inclined hole systems, and significantly improve the processing efficiency and surface quality.

[0035] The hydraulic pipeline includes an oil inlet interface plate 23, a first brake oil inlet pipe 24, and a second brake oil inlet pipe 2 fifty-five, which are respectively connected to the hydraulic brake mechanisms of the oil brake disc tailstock and the oil brake four-axis indexing plate 9.

[0036] An oil brake four-axis indexing plate 9 is provided with an oil delivery pipe 26 coaxially arranged with the indexing plate 9. The oil delivery pipe 26 rotates synchronously with the indexing plate 9. The oil delivery pipe 26 is internally provided with an independent first oil delivery flow channel 27 and a second oil delivery flow channel 28. The hydraulic pipeline includes a first hydraulic oil inlet pipe 29 and a second hydraulic oil inlet pipe 30 that are communicated with the first oil delivery flow channel 27 and the second oil delivery flow channel 28, and the two hydraulic oil inlet pipes supply oil to the two oil delivery flow channels through a transfer mechanism. The other ends of the first hydraulic oil inlet pipe 29 and the second hydraulic oil inlet pipe 30 are connected to an oil inlet interface plate 23 (hydraulic oil is accessed from the outside and is branched through the oil inlet interface plate 23). A first oil guiding flow channel 31 and a second oil guiding flow channel 32 communicated with a corner hydraulic cylinder are arranged in the bridge plate 4, and the other ends of the two guiding flow channels are communicated with the two oil delivery flow channels.

[0037] The transfer mechanism includes a transfer sheath 36. The outer end of the oil delivery pipe 26 is inserted into the transfer sheath 36. The first hydraulic oil inlet pipe 29 and the second hydraulic oil inlet pipe 30 are made of rigid materials. The outer end oil delivery ports 37 of the first oil delivery flow channel 27 and the second oil delivery flow channel 28 are arranged at intervals on the oil delivery pipe 26. The oil delivery pipe 26 rotates relative to the transfer sheath 36, and two annular sealing cavities 38 arranged at intervals are formed therebetween. The two annular sealing cavities 38 correspond to the two outer end oil delivery ports 37. The connection positions of the first hydraulic oil inlet pipe 29 and the second hydraulic oil inlet pipe 30 correspond to the two annular sealing cavities 38. The oil delivery pipe 26 coaxially arranged with the indexing plate 9 is internally provided with independent flow channels, and cooperates with the transfer sheath 36 to form double annular sealing cavities 38 (sealing rings are arranged on both sides of the two annular sealing cavities 38 of the oil delivery pipe 26 to ensure that the two annular sealing cavities 38 are independent of each other), realizing dynamic sealing of the hydraulic oil circuit in a rotating state, ensuring stable oil supply to the pressing oil circuit of the corner hydraulic cylinder, and avoiding clamping failure caused by oil pressure leakage.

[0038] Both ends of the bridge plate 4 are fixedly connected to the indexing plate 9 and the disk 10 respectively through support fixing plates 39. Two radial slots 40 are symmetrically arranged on the indexing plate 9 and / or the disk 10. Openings 41 for nuts 34 to enter are provided at one ends of the two radial slots 40 away from each other. Bar-shaped notches 35 communicated with the openings 41 are provided at one ends of the two radial slots 40 facing the support fixing plate 39. The support fixing plate 39 is threadedly connected with the nut 34 through a fastener passing through the bar-shaped notch 35, so that the support fixing plate 39 and the bridge plate 4 are kept in close fit. In this embodiment, two flow channel holes are opened on the bridge plate 4, which are hermetically matched with the two oil guiding flow channels of the bridge plate 4 and the two oil delivery flow channels of the oil delivery pipe 26 respectively. Sealing rings can be embedded at the connection between the two. The sealing method is not the focus of this application and is an existing technology, so no specific description is made.

[0039] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A multi-station high-pressure pump body two-way rotation processing tooling, comprising a base (1). Tailstock units (2) and indexing plate units (3) are respectively arranged on both sides of the base (1), and a rigid linkage is formed between the two through a cross-rail (4). The indexing plate unit (3) is connected with a first driving unit (5) for driving its indexing rotation; the tailstock units (2) and the indexing plate units (3) are respectively integrated with hydraulic braking mechanisms, and synchronous braking is realized through a hydraulic power system. It is characterized in that: A pump body clamping mechanism is provided on the bridge plate (4). The pump body clamping mechanism includes a rotating shaft (6) for driving the circumferential rotation of the pump body and a hydraulic actuator (7) for axially pressing the pump body. The hydraulic actuator (7) is configured to allow the rotating shaft (6) to drive the circumferential rotation of the pump body while axially pressing the pump body; the rotating shaft (6) is connected to a second driving unit (8) for driving its circumferential rotation; the disc (10) of the tailstock unit (2) is a driven structure, and its rotational freedom is synchronously pulled by the rotation of the indexing disc (9) of the indexing disc unit (3). The hydraulic actuator (7) is a swing cylinder, and its output shaft is connected to a pressing plate (33). The bottom of the pressing plate (33) is axially linked with the rotating shaft (6) through a flat thrust bearing (11). A positioning groove (12) for placing the pump body is provided at the top of the rotating shaft (6). After the pump body is inserted into the positioning groove (12), its circumferential position is fixed; the stationary ring of the flat thrust bearing (11) is fixedly connected to the pressing plate (33), and the rotating ring is in contact with the end face of the pump body on the rotating shaft (6).

2. The multi-station high-pressure pump body two-way rotation machining tooling according to claim 1, characterized in that: The tailstock unit (2) is an oil brake disc tailstock, and the indexing disc unit (3) is an oil brake four-axis indexing disc (9); the hydraulic power system is respectively connected to the hydraulic brake mechanisms of the oil brake disc tailstock and the oil brake four-axis indexing disc (9) through hydraulic pipelines, so as to realize the synchronous braking of the indexing disc (9) of the oil brake four-axis indexing disc (9) and the disc (10) of the oil brake disc tailstock.

3. The multi-station high-pressure pump body two-way rotation processing tooling according to claim 1, characterized in that: A jack (13) for the output shaft of the swing cylinder to pass through is provided at the center of the pressing plate (33). A positioning pin (14) penetrating the jack (13) and the output shaft is provided on the side of the pressing plate (33). Snap rings (15) are sleeved at both ends of the positioning pin (14), and the inner side walls of the snap rings (15) are in limit fit with the outer side surface of the pressing plate (33).

4. The multi-station high-pressure pump body two-way rotation processing tooling according to claim 1, wherein: Two sets of the rotating shafts (6) are symmetrically arranged on both sides of the hydraulic actuator (7), and the center of the pressing plate (33) is fixedly connected to the output shaft of the hydraulic actuator (7); an angular contact ball bearing (16) is provided outside each rotating shaft (6) and is installed in the mounting hole (17) of the bridge plate (4), and the two sets of rotating shafts (6) are synchronously driven by a second driving mechanism.

5. The multi-station high-pressure pump body two-way rotation processing tooling according to claim 4, characterized in that: The second driving mechanism includes a main shaft (18), a driving helical gear (19) fixed to the main shaft (18), and two driven helical gears (20); a fixed base (21) is provided at the bottom of the bridge plate (4). The two rotating shafts (6) extend to the fixed base (21) and each is fixedly connected to a driven helical gear (20); a speed reducer (22) is provided at the bottom of the fixed base (21), and its output shaft is connected to the main shaft (18) extending into the base. The driving helical gear (19) meshes with the two driven helical gears (20) for transmission.

6. The multi-station high-pressure pump body two-way rotation machining tooling according to claim 2, wherein: The hydraulic pipeline includes an oil inlet interface plate (23), a first brake oil inlet pipe (24), and a second brake oil inlet pipe (25), which are respectively connected to the hydraulic brake mechanisms of the oil brake disc tailstock and the oil brake four-axis indexing disc (9).

7. The multi-station high-pressure pump body two-way rotation processing tooling according to claim 6, characterized in that: An oil brake four-axis indexing table (9) is provided with an oil delivery pipe (26) coaxially arranged with the indexing table (9). The oil delivery pipe (26) rotates synchronously with the indexing table (9). The oil delivery pipe (26) is provided with an independent first oil delivery flow channel (27) and a second oil delivery flow channel (28). The hydraulic pipeline includes a first hydraulic oil inlet pipe (29) and a second hydraulic oil inlet pipe (30) communicating with the first oil delivery flow channel (27) and the second oil delivery flow channel (28). The two hydraulic oil inlet pipes supply oil to the two oil delivery flow channels through a transfer mechanism. The other ends of the first hydraulic oil inlet pipe (29) and the second hydraulic oil inlet pipe (30) are connected to an oil inlet interface plate (23). A first oil guiding flow channel (31) and a second oil guiding flow channel (32) communicating with a rotary angle hydraulic cylinder are arranged in the bridge plate (4). The other ends of the two guiding flow channels are communicated with the two oil delivery flow channels.

8. The multi-station high-pressure pump body two-way rotation processing tooling according to claim 7, characterized in that: The transfer mechanism includes a transfer sheath (36). The outer end of the oil delivery pipe (26) is inserted into the transfer sheath (36). The first hydraulic oil inlet pipe (29) and the second hydraulic oil inlet pipe (30) are made of rigid materials. The outer end oil delivery ports (37) of the first oil delivery flow channel (27) and the second oil delivery flow channel (28) are arranged at intervals on the oil delivery pipe (26). The oil delivery pipe (26) rotates relative to the transfer sheath (36), and two annular sealing cavities (38) arranged at intervals are formed between the two. The two annular sealing cavities (38) correspond to the two outer end oil delivery ports (37). The connection positions of the first hydraulic oil inlet pipe (29) and the second hydraulic oil inlet pipe (30) correspond to the two annular sealing cavities (38).

9. The multi-station high-pressure pump body two-way rotation machining tooling according to claim 2, characterized in that: Both ends of the bridge plate (4) are fixedly connected to the indexing table (9) and the disk (10) respectively through support fixing plates (39). Two radial slots (40) are symmetrically arranged on the indexing table (9) and / or the disk (10). Openings (41) for nuts (34) to enter are provided at the mutually remote ends of the two radial slots (40). Strip-shaped notches (35) communicating with the openings (41) are provided at the ends of the two radial slots (40) facing the support fixing plate (39). The support fixing plate (39) is threadedly connected to the nut (34) through a fastener passing through the strip-shaped notch (35) to keep the support fixing plate (39) and the bridge plate (4) in close fit.

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