Middle cylinder laser welding press fitting tool

Abstract

The invention belongs to the technical field of shock absorber intermediate cylinder machining, and particularly relates to an intermediate cylinder laser welding press fitting tool which comprises a lower pressing plate, an upper pressing plate, two stand columns, an axial positioning assembly and a radial positioning assembly. The upper pressing plate is connected to the two stand columns in a sliding mode, and elastic pieces are arranged between the bottom of the upper pressing plate and the stand columns. The axial positioning assembly comprises a lower positioning piece arranged on the lower pressing plate and an upper positioning piece arranged on the upper pressing plate. The radial positioning assembly comprises a supporting seat adjustably arranged on the lower pressing plate and a V-shaped abutting clamp connected to the supporting seat, and an opening of the V-shaped abutting clamp right faces the cylinder body. The method is used for solving the technical problems that the cylinder body and the O-groove ring are assembled in a manual hammering press-fitting mode at present, press-fitting is not in place easily, the size of a middle cylinder is out of tolerance, and follow-up laser welding is affected.

Description

Technical Field

[0001] The invention belongs to the technical field of the machining of the middle cylinder of a shock absorber, and particularly relates to a laser welding and press-fitting tooling for the middle cylinder. Background Art

[0002] As the core of an automotive semi-active suspension system, an electromagnetic valve shock absorber has excellent road adaptability and can balance ride comfort and handling safety. The middle cylinder, as an important component of the electromagnetic valve shock absorber, includes a middle cylinder body and O-ring grooves provided at both ends of the cylinder body. After the O-ring grooves are press-fitted at the ends of the cylinder body, connection is achieved through laser welding.

[0003] Currently, when machining the middle cylinder, the cylinder body and the O-ring grooves at both ends are press-fitted together by manual hammering. Since the assembly accuracy of manual operation is related to personal proficiency, the O-ring grooves cannot effectively ensure being press-fitted in place. The skew of the O-ring grooves will cause the dimensions of the middle cylinder to exceed the tolerance, affecting the laser welding between the middle cylinder and the O-ring grooves and being unfavorable for mass production. Summary of the Invention

[0004] Aiming at the deficiencies existing in the prior art, the purpose of the invention is to provide a laser welding and press-fitting tooling for the middle cylinder, which is used to solve the technical problem that when the cylinder body and the O-ring grooves are assembled by the current manual hammering press-fitting method, it is easy to have the situation of incomplete press-fitting, resulting in the dimensions of the middle cylinder exceeding the tolerance and affecting the subsequent laser welding.

[0005] To achieve the above purpose, the technical solution of the invention is as follows: A laser welding and press-fitting tooling for the middle cylinder, which includes a lower pressing plate, an upper pressing plate, columns, an axial positioning component, and a radial positioning component. Two columns are provided and are connected to the lower pressing plate at intervals. The upper pressing plate is slidably connected to the two columns, and the upper pressing plate is driven by a driving member to move along the columns. An elastic member is arranged between the bottom of the upper pressing plate and the columns. The axial positioning component includes a lower positioning member arranged on the lower pressing plate for positioning the cylinder body and an upper positioning member arranged on the upper pressing plate for positioning the O-ring grooves, ensuring that the cylinder body and the O-ring grooves for press-fitting are coaxial. The radial positioning component includes a support seat adjustably arranged on the lower pressing plate and a V-shaped clamping fixture connected to the support seat. The opening of the V-shaped clamping fixture faces the cylinder body connected to the lower positioning member, and positions the cylinder body radially.

[0006] Preferably, a long circular hole is arranged on the support seat, and the adjustable connection with the lower pressing plate is realized by passing a bolt through the long circular hole.

[0007] Preferably, the V-shaped clamping fixture is detachably connected to the support seat by bolts.

[0008] Preferably, the lower positioning member is detachably connected to the lower pressing plate, and a positioning groove is provided at the top end.

[0009] Preferably, the upper positioning member is detachably connected to the upper pressing plate, and a positioning groove is provided at the bottom end.

[0010] Preferably, the elastic member is a compression spring.

[0011] Preferably, a stepped portion is provided on the column, the compression spring is sleeved on the column, its lower end abuts against the stepped portion, and its upper end abuts against the bottom of the upper pressing plate.

[0012] Preferably, the connection between the column and the lower pressing plate is detachable.

[0013] The beneficial effects of adopting the technical solution of the present invention are as follows: The present invention axially positions the cylinder block and the O-ring through the axial positioning assembly, and radially positions the cylinder block through the radial positioning assembly. The positioning of the cylinder block and the O-ring in axial and radial cooperation ensures coaxial pressing, meets the pressing accuracy requirements, facilitates subsequent laser welding, and is convenient for realizing mass production. The axial positioning assembly includes a lower positioning member connected to the lower pressing plate and an upper positioning member connected to the upper pressing plate to ensure the coaxiality of the cylinder block connected to the lower positioning member and the O-ring connected to the upper positioning member, and ensure the pressing coaxiality; the radial positioning assembly includes a support base adjustably connected to the lower pressing plate and a V-shaped clamping clip connected to the support base. The V-shaped clamping clip faces the cylinder block connected to the lower positioning member to position the cylinder block radially, ensure the stability of the cylinder block during the pressing process, further ensure coaxial pressing, and achieve the pressing accuracy. Description of the Drawings

[0014] Figure 1 It is a front view schematic diagram of an embodiment of a laser welding and pressing tool for an intermediate cylinder; Figure 2 It is a three-dimensional schematic diagram of an embodiment of a laser welding and pressing tool for an intermediate cylinder; Figure 3 It is a schematic diagram of a V-shaped clamping clip; Figure 4 It is a schematic diagram of an intermediate cylinder.

[0015] Among them, Figures 1-4 in the figure, 1 - lower pressing plate, 2 - upper pressing plate, 3 - column, 31 - stepped portion, 4 - lower positioning member, 5 - upper positioning member, 6 - support base, 61 - oblong hole, 7 - V-shaped clamping clip, 8 - elastic member, 9 - cylinder block, 10 - O-ring. Detailed Embodiments

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments, and do not limit the scope of the present invention.

[0017] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0018] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0019] The specific embodiments are as follows: As Figures 1-4 shown, an intermediate cylinder laser welding and pressing tooling, the pressing tooling includes a lower pressing plate 1, an upper pressing plate 2, columns 3, an axial positioning assembly and a radial positioning assembly. There are two columns 3, which are vertically connected to the lower pressing plate 1 and are arranged at intervals. Two through holes are provided on the upper pressing plate 2, which are respectively sleeved on the two columns 3 and can slide up and down reciprocally. The upper pressing plate 2 is driven by a driving device such as a hydraulic press. An elastic member 8 is provided between the upper pressing plate 2 and the column 3, which is used to automatically raise the upper pressing plate 2 under the action of the resilience of the elastic member 8 after the upper pressing plate 2 loses the driving force of the driving device after the pressing is completed, so as to facilitate the removal of the intermediate cylinder after pressing.

[0020] The axial positioning assembly includes an upper positioning member 5 and a lower positioning member 4. The lower positioning member 4 is connected to the lower pressing plate 1 and is used to support and position the cylinder block 9. The upper positioning member 5 is connected to the bottom of the upper pressing plate 2 and is used to support and position the O-ring 10. The upper positioning member 5 and the lower positioning member 4 are aligned, and positioning grooves are provided at the bottom end of the upper positioning member 5 and the upper end of the lower positioning member 4, and the two positioning grooves are aligned to maintain coaxiality, so as to ensure the coaxiality of the O-ring 10 and the cylinder block 9.

[0021] The radial positioning assembly includes a support base 6 and a V-shaped clamping clip 7. The support base 6 is adjustably connected to the lower pressing plate 1 and is located on one side of the lower positioning member 4. The V-shaped clamping clip 7 is connected to the support base 6, and its opening faces the cylinder block 9 connected to the lower positioning member 4. The side wall of the cylinder block 9 abuts against the opening of the V-shaped clamping clip 7, which is used to limit the cylinder block 9 radially and ensure the stability of the cylinder block 9 during the press-fitting process, so as to ensure the press-fitting accuracy and coaxiality.

[0022] Further, the support base 7 is a vertically bent plate, one of the bent portions abuts against the lower pressing plate 1, and the other bent portion is perpendicular to the lower pressing plate 1. A long circular hole 61 is provided on the bent plate abutting against the lower pressing plate 1, and a bolt is used to pass through the long circular hole 61 and connect to the lower pressing plate 1 to achieve the adjustable connection between the support base 6 and the lower pressing plate 1, adjust the distance between the V-shaped clamping clip 7 and the cylinder block 9, and thus adapt to the press-fitting of intermediate cylinders with different diameter sizes, expanding the applicable range.

[0023] Further, the V-shaped clamping clip 7 is connected to the bent portion perpendicular to the lower pressing plate 1 on the support base 7 by bolts, and the connection is detachable, which is convenient for replacing the V-shaped clamping clip 7.

[0024] Further, the lower positioning member 4 and the lower pressing plate 1 are detachably connected by bolts, and the upper positioning member 5 and the upper pressing plate 2 are detachably connected by bolts. This is convenient for selecting the upper positioning member 5 and the lower positioning member 4 with appropriate positioning grooves according to the size of the intermediate cylinder to be press-fitted, with high flexibility in use and expanding the applicable range of this press-fitting tooling.

[0025] Further, a stepped portion 31 is provided on the column 3 for supporting the elastic member 8. In this embodiment, the elastic member 8 is a compression spring, which can withstand axial pressure and provide a resisting force against the external load pressure. The compression spring is sleeved on the column 3, its lower end abuts against the stepped portion 31, and its upper end abuts against the bottom of the upper pressing plate 2 to provide a reset elastic force for the upper pressing plate 2.

[0026] Further, the column 3 and the lower pressing plate 1 are connected by bolts and are of a detachable style. This makes the whole press-fitting tooling assembled from multiple separately arranged components, which is convenient for disassembly, storage, transportation, and convenient for separately replacing a damaged part, reducing the use cost.

[0027] When the laser welding and press-fitting tooling for the intermediate cylinder in this embodiment is in use, the cylinder block 9 is placed in the positioning groove of the lower positioning member 4, and the O-ring 10 is placed in the positioning groove of the upper positioning member 5. The upper pressing plate 2 is driven by the driving device to move downward, so that the O-ring 10 is press-fitted onto the cylinder block 9. Since the cylinder block 9 and the O-ring 10 are positioned and aligned through the positioning grooves of the upper and lower positioning members 4 and 5, the coaxiality is ensured. And the cylinder block 9 is radially tightened by the V-shaped clamping clip 7 to prevent the cylinder block 9 from skewing or shaking during the press-fitting process, ensuring the stability and accuracy during the press-fitting process, and further ensuring the coaxial press-fitting of the cylinder block 9 and the O-ring 10, meeting the press-fitting accuracy requirements, facilitating subsequent laser welding, and facilitating mass production. Moreover, after the press-fitting is completed, the driving device resets and loses the driving force on the upper pressing plate 2. Under the resilience of the elastic member 8, the upper pressing plate 2 is driven to move upward automatically, thereby facilitating the user to take out the press-fitted intermediate cylinder.

[0028] The above has described the present invention by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as various non-substantial improvements are made by adopting the technical solutions of the present invention, or the concept and technical solutions of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. An intermediate cylinder laser welding and pressing tooling, characterized in that The press-fitting tooling includes a lower pressing plate, an upper pressing plate, columns, an axial positioning component and a radial positioning component. Two columns are provided and are connected to the lower pressing plate at intervals. The upper pressing plate is slidably connected to the two columns, and the upper pressing plate is driven by a driving member to move along the columns. An elastic member is provided between the bottom of the upper pressing plate and the columns. The axial positioning component includes a lower positioning member provided on the lower pressing plate for positioning the cylinder block and an upper positioning member provided on the upper pressing plate for positioning the O-ring groove, ensuring that the cylinder block and the O-ring groove for press-fitting are coaxial. The radial positioning component includes a support seat adjustably provided on the lower pressing plate and a V-shaped clamping clip connected to the support seat. The opening of the V-shaped clamping clip faces the cylinder block connected to the lower positioning member, positioning the cylinder block radially.

2. The intermediate cylinder laser welding and pressing tooling according to claim 1, characterized in that A long circular hole is provided on the support seat, and the adjustable connection with the lower pressing plate is achieved by passing a bolt through the long circular hole.

3. The laser welding and pressing tooling for the intermediate cylinder according to claim 2, characterized in that, The V-shaped clamping clip is detachably connected to the support seat by a bolt.

4. A middle cylinder laser welding and press-fitting tooling according to claim 1, characterized in that, The lower positioning member is detachably connected to the lower pressing plate, and a positioning groove is provided at the top end.

5. An intermediate cylinder laser welding and press-fitting tooling according to claim 4, characterized in that, The upper positioning member is detachably connected to the upper pressing plate, and a positioning groove is provided at the bottom end.

6. The laser welding and pressing tooling for the intermediate cylinder according to claim 1, wherein, The elastic member uses a compression spring.

7. A laser welding and press-fitting tooling for an intermediate cylinder according to claim 6, characterized in that, A stepped portion is provided on the column, the compression spring is sleeved on the column, its lower end abuts against the stepped portion, and its upper end abuts against the bottom of the upper pressing plate.

8. A laser welding and press-fitting tooling for an intermediate cylinder according to claim 1, characterized in that, The connection between the column and the lower pressing plate is detachable.

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