Hydraulic ABS liquid outlet steel ball seat

Abstract

A hydraulic ABS liquid outlet steel ball seat comprises a steel ball seat body, a steel ball positioning groove and an oil inlet groove are formed in the steel ball seat body, and a steel ball is arranged in the steel ball positioning groove. And the steel ball sealing part is extruded by the extrusion cutter so as to further eliminate lathe tool lines and improve the flatness and smoothness of the sealing surface. In the extrusion process, turning tool lines can be pushed flat and compacted by controlling the feed amount and the cutting allowance of the extrusion tool, and a smooth and flat sealing face is formed. By means of the machining method, the quality of the sealing face can be remarkably improved, the sealing performance of the hydraulic ABS liquid outlet steel ball seat is enhanced, the roughness of the steel ball sealing part can reach Ra0.04 or below, the surface has the mirror surface effect, and the sealing qualification rate detected when the steel ball sealing part makes contact with the steel ball reaches 99.8% or above.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic ABS, in particular to a hydraulic ABS liquid outlet steel ball seat and a sealing surface processing method thereof. Background Art

[0002] The existing hydraulic ABS liquid outlet steel ball seat uses a small boring tool to rough turn the conical surface, and then fine turn it twice to make the conical surface roughness meet the requirements, but the conical surface will leave obvious turning tool marks, and the seal pass rate when it contacts the steel ball is only 60%. In actual use, this unqualified seal often causes leakage in the hydraulic system, thereby affecting the normal operation of the ABS system and even posing a threat to driving safety. Therefore, how to improve the sealing performance of the hydraulic ABS liquid outlet steel ball seat has become an urgent problem to be solved in the industry. Summary of the invention

[0003] In view of this, the utility model provides a hydraulic ABS liquid outlet steel ball seat and a sealing surface processing method thereof.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A hydraulic ABS liquid outlet steel ball seat comprises a steel ball seat body, wherein a steel ball positioning groove and an oil inlet groove are provided on the steel ball seat body, a steel ball is arranged in the steel ball positioning groove, a groove hole connected to the oil inlet groove is provided on a groove wall on one side of the steel ball positioning groove close to the oil inlet groove, the groove hole comprises a steel ball sealing part and an oil inlet part, the steel ball is sealedly connected to the steel ball sealing part, and a gap is provided between the steel ball and the side of the steel ball sealing part close to the oil inlet part.

[0006] Preferably, the steel ball sealing portion and the oil inlet portion are both arranged in an inclined annular structure, and the inclination direction of the steel ball sealing portion is that the side of the slot hole close to the steel ball positioning groove is inclined toward the center of the slot hole.

[0007] Preferably, the oil inlet portion is inclined in a direction that the side of the oil inlet groove close to the slot opening is inclined toward the center of the slot hole, and the nominal inner diameter of the oil inlet portion is smaller than the nominal inner diameter of the steel ball sealing portion.

[0008] Preferably, a steel ball pressure cover is arranged on the steel ball seat, a compression spring is arranged between the steel ball pressure cover and the steel ball seat, and two ends of the compression spring are respectively connected to the steel ball and the steel ball pressure cover.

[0009] Preferably, the steel ball pressure cover protrudes toward one side of the steel ball positioning groove to form a seat body connecting end, the seat body connecting end extends into the steel ball positioning groove and is connected to the steel ball seat body, a spring groove is opened on the seat body connecting end, the clamping spring is arranged in the spring groove, and one end of the clamping spring extends out of the spring groove to resist the steel ball.

[0010] A method for processing the sealing surface of a hydraulic ABS liquid outlet steel ball seat comprises the following steps:

[0011] Step 1: Rough turning: Use a small boring tool to rough turn and form a conical steel ball sealing part on the steel ball seat body;

[0012] Step 2: Finish turning: Use a small boring tool to finish turn the conical surface. After turning, there will be tool marks on the steel ball sealing part;

[0013] Step 3: Use an extrusion knife to squeeze the steel ball sealing part to flatten and compact the turning tool pattern.

[0014] Preferably, in step 2, when the small boring tool is used to finish turning the conical surface, precise control is required according to a predetermined conical surface angle, and the conical surface angle of the steel ball sealing portion is 45°±1°.

[0015] Preferably, in step three, when the extrusion knife is used to extrude the steel ball sealing part, the feed rate is 0.02mm / r, the finishing allowance of the extrusion knife after cutting is 0.01-0.03mm, and the feed rate of the extrusion knife is controlled at 0.15mm-0.2mm.

[0016] Preferably, a spherical diamond is provided at the front end of the extrusion knife.

[0017] The beneficial effect of the utility model is that the purpose of squeezing the steel ball sealing part by using an extrusion knife is to further eliminate the turning tool marks and improve the flatness and finish of the sealing surface. During the extrusion process, by controlling the force and speed of the extrusion knife, it can be ensured that the turning tool marks are flattened and compacted to form a smooth and flat sealing surface. This processing method can significantly improve the quality of the sealing surface and enhance the sealing performance of the hydraulic ABS liquid outlet steel ball seat, so that the roughness of the steel ball sealing part can reach less than Ra0.04, the surface presents a mirror effect, and the qualified rate of the seal when contacting with the steel ball is more than 99.8%. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Attached Figure 1 This is a schematic diagram of the hydraulic ABS liquid outlet ball seat structure;

[0020] Attached Figure 2 This is a schematic diagram of the processing of the hydraulic ABS liquid outlet steel ball seat by the extrusion tool;

[0021] Attached Figure 3Schematic diagram of the extrusion knife structure. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model will be further described below in conjunction with the accompanying drawings of the specification.

[0024] The utility model provides the following technical solutions:

[0025] As attached Figure 1-3 As shown, the utility model discloses a hydraulic ABS liquid outlet steel ball seat, comprising a steel ball seat body 1, a steel ball positioning groove 2 and an oil inlet groove 3 are provided on the steel ball seat body 1, a steel ball 4 is arranged in the steel ball positioning groove 2, a slot hole 5 connected to the oil inlet groove 3 is provided on the groove wall of the steel ball positioning groove 2 near the oil inlet groove 3, the slot hole 5 has a steel ball sealing part 6 and an oil inlet part 7, the steel ball 4 is sealed with the steel ball sealing part 6, and a gap is provided between the steel ball 4 and the side of the steel ball sealing part 6 near the oil inlet part 7. Specifically, in the present design, by providing the slot hole 5 connected to the oil inlet groove 3 on the groove wall of the steel ball positioning groove 2 near the oil inlet groove 3, when the hydraulic ABS system is working, the oil can smoothly enter the steel ball seat through the oil inlet groove 3 and the slot hole 5, and then contact the steel ball 4 and produce an effect. The cross section of the steel ball sealing part 6 is set in a conical shape, so that an effective seal can be formed between the steel ball 4 and the oil inlet groove 3 to prevent the oil from leaking out from the steel ball seat when it is not needed. This conical sealing part can fit the steel ball 4 tightly, ensuring a stable sealing effect under complex working conditions such as high pressure or vibration. Since the steel ball sealing part 6 is arranged in a conical structure, a gap is formed between the steel ball sealing part 6 and the side close to the oil inlet 7 and the steel ball 4. The existence of this gap can replace steel balls 4 of different sizes according to different needs, thereby adjusting the flow rate and pressure of the oil. This design not only improves the flexibility and adaptability of the hydraulic ABS outlet steel ball seat, but also makes the entire system easier to maintain and adjust.

[0026] Further, the steel ball seal 6 and the oil inlet 7 are both arranged in an inclined annular structure, and the inclination direction of the steel ball seal 6 is that the side of the slot 5 close to the steel ball positioning slot 2 is inclined toward the center of the slot 5. Specifically, in the present embodiment, the inclined annular structure design further enhances the sealing performance between the steel ball 4 and the steel ball seal 6. When the oil flows into and passes through the slot 5 from the oil inlet slot 3, due to the inclined design of the steel ball seal 6, the oil will be guided to a certain extent during the flow process, so that the oil can flow to the steel ball 4 through the oil inlet 7 more smoothly, thereby ensuring that the steel ball 4 can move and rotate flexibly under the action of the oil. In addition, the inclined annular structure can also form a certain pressure difference between the steel ball 4 and the steel ball seal 6, and this pressure difference can further enhance the sealing effect and prevent oil leakage. Especially under high pressure conditions, the inclined annular structure can better adapt to the movement and deformation of the steel ball 4, thereby ensuring the stability and reliability of the sealing performance.

[0027] Furthermore, the inclination direction of the oil inlet 7 is such that the side of the oil inlet groove 3 close to the notch is inclined toward the center of the slot hole 5, and the nominal inner diameter of the oil inlet 7 is smaller than the nominal inner diameter of the steel ball sealing part 6. Specifically, in the present embodiment, the inclined design of the oil inlet 7 not only helps the oil to flow into the slot hole 5 more smoothly, but also forms a certain pressure gradient when the oil enters, which helps to improve the flow efficiency and pressure transmission effect of the oil. The design that the nominal inner diameter of the oil inlet 7 is smaller than the nominal inner diameter of the steel ball sealing part 6 can further enhance the sealing while ensuring sufficient oil flow. This design enables a certain throttling effect to be formed when the oil flows through the oil inlet 7 and enters the interior of the steel ball seat, thereby preventing the oil from directly impacting the steel ball 4 under high pressure, thereby protecting the service life of the steel ball 4 and the steel ball seat.

[0028] Furthermore, a steel ball pressure cover 8 is provided on the steel ball seat, and a compression spring 9 is provided between the steel ball pressure cover 8 and the steel ball seat, and the two ends of the compression spring 9 are connected to the steel ball 4 and the steel ball pressure cover 8 respectively. Specifically, in the present embodiment, the steel ball pressure cover 8 is provided to further stabilize the position of the steel ball 4 in the steel ball positioning groove 2 to prevent displacement under the action of external forces such as oil pressure or mechanical vibration. At the same time, the compression spring 9 between the steel ball pressure cover 8 and the steel ball seat plays a role of buffering and stabilization. When the oil enters the steel ball seat through the oil inlet groove 3 and the slot hole 5, the pressure of the oil will act on the steel ball 4, causing the steel ball 4 to produce a certain displacement. At this time, the compression spring 9 will be correspondingly extended and retracted according to the displacement of the steel ball 4, thereby playing a role of buffering and stabilization. This design can not only ensure that the steel ball 4 can move and rotate flexibly under the action of the oil, but also effectively prevent the steel ball 4 from being damaged due to excessive force under extreme working conditions, thereby extending the service life of the hydraulic ABS outlet steel ball seat.

[0029] Furthermore, the steel ball pressure cover 8 protrudes toward one side of the steel ball positioning groove 2 to form a seat body connection end 10, the seat body connection end 10 extends into the steel ball positioning groove 2 and is connected to the steel ball seat body 1, and a spring groove 11 is provided on the seat body connection end 10, and the clamping spring 9 is arranged in the spring groove 11, and one end of the clamping spring 9 extends out of the spring groove 11 to resist the steel ball 4. Specifically, in this embodiment, the design of the seat body connection end 10 makes the connection between the steel ball pressure cover 8 and the steel ball seat body 1 more stable and reliable. By extending the seat body connection end 10 into the steel ball positioning groove 2 and connecting with the steel ball seat body 1, it can be ensured that the steel ball pressure cover 8 is not easy to loosen or fall off when subjected to external force. At the same time, the spring groove 11 provided on the seat body connection end 10 provides a stable installation space for the clamping spring 9, so that the clamping spring 9 can play an effective buffering and stabilizing role between the steel ball pressure cover 8 and the steel ball seat body 1. In addition, the design that one end of the compression spring 9 extends out of the spring slot 11 to press against the steel ball 4 enables the steel ball 4 to be promptly supported and buffered when subjected to external forces such as oil pressure or mechanical vibration. This design can not only effectively prevent the steel ball 4 from being damaged due to excessive force, but also ensure that the steel ball 4 can flexibly move and rotate under the action of oil, thereby ensuring the normal operation of the hydraulic ABS system.

[0030] A method for processing the sealing surface of a hydraulic ABS liquid outlet steel ball seat comprises the following steps:

[0031] Step 1: Rough turning: Use a small boring tool to rough turn and form a conical steel ball sealing part 6 on the steel ball seat body 1;

[0032] Step 2: Finish turning: Use a small boring tool to finish turn the conical surface. After turning, there will be tool marks on the steel ball sealing part 6.

[0033] Step 3: Use the extrusion knife 12 to squeeze the steel ball sealing part 6 to flatten and compact the turning tool pattern.

[0034] Furthermore, in the step 2, when the small boring tool is used to finish turning the conical surface, it is necessary to perform precise control according to a predetermined conical surface angle, and the conical surface angle of the steel ball sealing portion 6 is 45°±1°. Specifically, in the present embodiment, the conical surface angle design of the steel ball sealing portion 6 is precisely calculated and verified by experiments. The selection of the angle not only takes into account the sealing effect, but also the processing difficulty and cost. The conical surface angle of 45°±1° can make the processing process smoother and reduce the processing cost while ensuring the sealing performance. In addition, this conical surface angle design can also adapt to the oil pressure and mechanical vibration under different working conditions, ensuring that the hydraulic ABS outlet steel ball seat can maintain a stable sealing effect under various working conditions.

[0035] In step three, the purpose of using the extrusion knife 12 to extrude the steel ball sealing part 6 is to further eliminate the turning tool marks and improve the flatness and finish of the sealing surface. During the extrusion process, by controlling the force and speed of the extrusion knife 12, it can be ensured that the turning tool marks are flattened and compacted to form a smooth and flat sealing surface. This processing method can significantly improve the quality of the sealing surface and enhance the sealing performance of the hydraulic ABS liquid outlet steel ball seat, so that the roughness of the steel ball sealing part can reach less than Ra0.04, the surface presents a mirror effect, and the sealing pass rate when contacting with the steel ball is more than 99.8%.

[0036] In addition, in order to ensure processing quality and accuracy, the following points should be noted:

[0037] 1. During rough turning and finish turning, the processing parameters, such as cutting speed, feed rate, etc., must be strictly controlled to ensure the stability and consistency of the processing.

[0038] 2. When using the extrusion knife 12, select appropriate extrusion force and speed to avoid deformation or damage of the sealing surface due to excessive extrusion.

[0039] 3. After processing, the steel ball seal part 6 should be strictly inspected to ensure that it meets the design requirements and quality standards. If necessary, a sealing performance test can also be carried out to ensure that the hydraulic ABS liquid outlet steel ball seat has good sealing performance.

[0040] Through the above processing methods and precautions, it can be ensured that the sealing surface of the hydraulic ABS liquid outlet steel ball seat has high quality and high performance, providing a strong guarantee for the normal operation of the hydraulic ABS system.

[0041] Furthermore, in the step three, when the extrusion knife 12 is used to extrude the steel ball sealing part 6, the feed rate is 0.02mm / r, the finishing allowance of the extrusion knife 12 after cutting is 0.01-0.03mm, and the feed rate of the extrusion knife 12 is controlled at 0.15mm-0.2mm. Specifically, in the present embodiment, the selection of the extrusion force must ensure that the turning tool marks can be flattened and compacted. The extrusion force of the extrusion knife 12 is preferably controlled at 10mpa, which can avoid excessive pressure on the sealing surface and cause deformation or damage. The extrusion speed is preferably controlled at 80m / min. The control of the extrusion speed directly affects the processing efficiency and processing quality. Too fast or too slow speed may affect the quality of the sealing surface. The control of the feed rate is equally important. Too large a speed may lead to over-processing, while too small a speed may not completely eliminate the turning tool marks.

[0042] Furthermore, a spherical diamond 13 is provided at the front end of the extrusion knife 12. Specifically, in the present embodiment, the spherical diamond 13 is provided to further improve the processing accuracy and wear resistance of the extrusion knife 12. Diamond, as a material with extremely high hardness, can ensure that the steel ball sealing part 6 will not be scratched or worn during the extrusion process, thereby ensuring the smoothness and flatness of the sealing surface. At the same time, the spherical design enables the extrusion knife 12 to apply pressure more evenly when contacting the sealing surface, avoiding deformation or damage of the sealing surface caused by excessive local pressure. This design not only improves the processing quality, but also extends the service life of the extrusion knife 12 and reduces the processing cost.

[0043] Specifically, in one embodiment, by setting 1 to 8 digital markings 15 on the area of ​​the extrusion knife near the spherical diamond, during processing, the processing points of the spherical diamond correspond to the numbers. After wear, the bolt 14 can be loosened and the front end can be rotated to move the processing point of the extrusion knife to another point corresponding to another number, which is convenient for use and recording.

[0044] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be 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 will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hydraulic ABS liquid outlet steel ball seat, characterized in that: It comprises a steel ball seat body, wherein a steel ball positioning groove and an oil inlet groove are provided on the steel ball seat body, a steel ball is arranged in the steel ball positioning groove, a groove hole connected to the oil inlet groove is provided on a groove wall on one side of the steel ball positioning groove close to the oil inlet groove, the groove hole comprises a steel ball sealing part and an oil inlet part, the steel ball is sealedly connected to the steel ball sealing part, and a gap is provided between the steel ball and the side of the steel ball sealing part close to the oil inlet part.

2. The hydraulic ABS liquid outlet steel ball seat according to claim 1, characterized in that: The steel ball sealing part and the oil inlet part are both arranged in an inclined annular structure, and the inclination direction of the steel ball sealing part is that the side of the slot hole close to the steel ball positioning groove is inclined toward the center of the slot hole.

3. The hydraulic ABS liquid outlet steel ball seat according to claim 2, characterized in that: The oil inlet portion is inclined in a direction that the side of the oil inlet groove close to the slot opening is inclined toward the center of the slot hole, and the nominal inner diameter of the oil inlet portion is smaller than the nominal inner diameter of the steel ball sealing portion.

4. The hydraulic ABS liquid outlet steel ball seat according to claim 1, characterized in that: A steel ball pressure cover is arranged on the steel ball seat, a compression spring is arranged between the steel ball pressure cover and the steel ball seat, and two ends of the compression spring are respectively connected with the steel ball and the steel ball pressure cover.

5. The hydraulic ABS liquid outlet steel ball seat according to claim 4, characterized in that: The steel ball pressure cover protrudes toward one side of the steel ball positioning groove to form a seat body connecting end, the seat body connecting end extends into the steel ball positioning groove and is connected to the steel ball seat body, a spring groove is opened on the seat body connecting end, the clamping spring is arranged in the spring groove, and one end of the clamping spring extends out of the spring groove to resist the steel ball.

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