Hydraulic clamp for welding shell

Abstract

The utility model discloses a hydraulic clamp for welding a shell. The hydraulic clamp comprises a base; a lifting sliding table assembly; at least one positioning pin; at least one main pressing cylinder; the at least one auxiliary pressing device is arranged on the base and is used for clamping the shell; when the lifting sliding table assembly carries the shell to descend to the positioning pin, the shell is clamped through the main pressing cylinder and the auxiliary pressing device. According to the shell clamping device, the shell is carried by the lifting sliding table assembly to ascend and descend, so that the shell automatically slides to be connected with the positioning pin in a clamped mode, then the shell is clamped through the main pressing cylinder and the auxiliary pressing device, accurate and rapid positioning is effectively achieved, and the shell clamping device can be popularized and applied to various shell clamps. The hydraulic lifting sliding table assembly and the positioning pin are adopted to replace a traditional positioning claw, positioning accuracy is guaranteed, meanwhile, the structure is simplified, and the whole device is more stable, suitable for long-time high-strength use and beneficial to maintenance.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of shell fixture, especially a kind of welding shell hydraulic fixture. BACKGROUND

[0002] Shell is a kind of common automobile parts. Shell needs accurate size and shape control in the machining process, and clamping is the key step to ensure the machining quality of shell.

[0003] The clamping of shell needs to use special fixture to ensure that the fixture can stably fix the shell and prevent moving or deforming in the machining process. In the clamping process, first, a locating line needs to be drawn on the shell to ensure the positioning accuracy during clamping, and for the clamping of special-shaped cavity shell, real-time adjustment of clamping force is needed during clamping due to its low rigidity, and multi-point auxiliary support is used to improve local rigidity and reduce deformation, so as to ensure the accuracy and efficiency of machining.

[0004] In the past, for special-shaped cavity shell parts, the traditional machining method usually needs multiple sets of tooling fixtures, and is mostly manually operated, which is low in efficiency and easy to cause machining deformation. Later, a fixture appeared that can clamp special-shaped cavity shell parts, such as the Chinese utility model patent application with patent publication number CN 204657513 U, which discloses a hydraulic vehicle fixture, which comprises a shell, a support block is arranged on the top surface of the shell, three pressure claws are arranged around the shell, the pressure claws penetrate the top surface and the side wall of the shell and are distributed in a triangle, three positioning claws are further arranged on the shell, and the positioning claws penetrate the top surface of the shell and are distributed in a triangle. The technical scheme realizes positioning and clamping functions by two sets of claws respectively, so as to ensure accurate positioning and sufficient clamping force. At the same time, disc springs are used to provide clamping force for the positioning claws, so that the adjustment of the clamping force of the positioning claws is very convenient.

[0005] However, the existing shell fixture still has the following disadvantages:

[0006] In the technical scheme, three positioning claws and three pressure claws are needed to tightly cooperate to clamp the shell, and the parts of the positioning claws are relatively more and the structure is relatively complex, which is easy to be damaged in long-term use state, and is not convenient to maintain.

[0007] Therefore, the present inventors propose the following technical scheme. UTILITY MODEL CONTENTS

[0008] The utility model aims at overcoming the deficiencies of the prior art, and provides a kind of welding shell hydraulic fixture.

[0009] In order to solve the above technical problems, the utility model adopts the following technical scheme: a welding shell hydraulic clamp, include: base, lifting sliding table subassembly, it sets up on the base with the way of liftable and be used for driving shell to lift, at least one positioning pin, it sets up on the base and be used for positioning shell, at least one main pressure cylinder, it sets up on the base and be used for pressing down shell to carry out clamping, at least one auxiliary pressure closer, it sets up on the base and be used for clamping shell, when lifting sliding table subassembly carries shell and drops to positioning pin, main pressure cylinder and auxiliary pressure closer clamping shell.

[0010] Further, in the above technical solution, the lifting sliding table subassembly comprises: a jacking oil cylinder arranged on the base, a supporting plate driven by the jacking oil cylinder, a plurality of supporting rods arranged on the supporting plate and used for supporting the shell, a plurality of guide blocks arranged on the supporting plate and used for guiding the shell, and a plurality of linear bearing guide columns arranged on the base and used for supporting the supporting plate.

[0011] Further, in the above technical solution, the jacking oil cylinder comprises: an oil cylinder body arranged on the base, a connecting rod driven by the oil cylinder body to extend and retract, and a top cover fixed to the supporting plate. When the oil cylinder body drives the connecting rod to extend, the connecting rod pushes the top cover and drives the supporting plate to lift.

[0012] Further, in the above technical solution, the auxiliary pressure closer comprises: an auxiliary clamping cylinder arranged above the shell and used for pressing down the shell, and an auxiliary supporting cylinder arranged on the base and used for jacking up the shell.

[0013] Further, in the above technical solution, the base is provided with at least one first mounting column for placing the auxiliary pressure closer. The first mounting column is provided with a clamping cylinder table for mounting the auxiliary clamping cylinder. The first mounting column is also formed with a supporting cylinder table for mounting the auxiliary supporting cylinder. The height of the clamping cylinder table is higher than the height of the supporting cylinder table.

[0014] Further, in the above technical solution, the base is provided with at least one second mounting column for placing the main pressure cylinder. The base is also provided with a plurality of protection supporting columns for preventing the shell from descending excessively. Correspondingly, the supporting plate is provided with a plurality of first avoiding positions for the protection supporting columns to extend upward.

[0015] Further, in the above technical solution, the main pressure cylinder comprises: a pressure cylinder body arranged on the second mounting column, a piston column driven by the pressure cylinder body and capable of extending and retracting, a main pressure connecting rod arranged on the pressure cylinder body in a swingable manner, and a pressure arm connected to the main pressure connecting rod in a swingable manner and swung by the piston column.

[0016] Further, in the above technical solution, the number of the positioning pins is two, and the positioning pin comprises a positioning seat arranged on the base, a pin head mounted on the positioning seat and used for positioning the shell, and a guide screw arranged on the pin head and used for guiding the shell.

[0017] Further, in the above technical solution, the shell comprises a first casting in a cylindrical shape and placed on the supporting plate, and a second casting arranged on the first casting.

[0018] After the above technical solution is adopted, the present application has the following beneficial effects compared with the prior art: in the present application, the shell is carried by the lifting slide assembly to move up and down, so that the shell is automatically slid to be clamped with the positioning pin, and then the shell is clamped by the main pressing cylinder and the auxiliary pressing device, so that precise and rapid positioning is effectively realized, and the structure can be applied to various shell clamps. In addition, compared with the existing structure, the lifting slide assembly and the positioning pin are used to replace the traditional positioning claw in the present application, which simplifies the structure while ensuring the positioning accuracy, makes the whole more stable, is suitable for long-term high-strength use, and is beneficial to maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0020] Figure 2 is a schematic diagram of the use state of the present application;

[0021] Figure 3 is a schematic diagram of the structure of the lifting slide assembly in the present application;

[0022] Figure 4 is a schematic diagram of the structure of the shell in the present application;

[0023] Figure 5 is a schematic diagram of the structure of the lifting oil cylinder in the present application;

[0024] Figure 6 is a schematic diagram of the structure of the main pressing cylinder in the present application. DETAILED DESCRIPTION

[0025] The present application will be further described below in combination with specific embodiments and drawings.

[0026] See Figures 1 to 6As shown, it is a kind of welding shell hydraulic clamp, it includes: base 1;Lifting slide assembly 2, it is set on the base 1 in a liftable way and is used to drive shell 10 to lift;At least one positioning pin 3, it is set on the base 1 and is used to position shell 10;At least one main pressure cylinder 4, it is set on the base 1 and is used to press down shell 10 to carry out clamping;At least one auxiliary pressure cylinder 5, it is set on the base 1 and is used to clamp shell 10;When lifting slide assembly 2 carries shell 10 and descends to positioning pin 3, main pressure cylinder 4 and auxiliary pressure cylinder 5 clamp shell 10.

[0027] In the utility model, lifting slide assembly 2 carries shell 10 to move up and down, shell 10 is automatically slid to be clamped with positioning pin 3, then main pressure cylinder 4 and auxiliary pressure cylinder 5 clamp shell 10, effective realization precision fast positioning, the structure can be popularized and applied to various shell clamps.In addition, compared with the prior art, the utility model uses the lifting slide assembly 2 of hydraulic pressure to replace the traditional positioning claw, while ensuring positioning precision, simplifying the structure, making the whole more stable, suitable for long time high strength use, beneficial to maintenance.

[0028] The lifting slide assembly 2 includes: a jacking oil cylinder 21 arranged on the base 1, a supporting plate 22 driven by the jacking oil cylinder 21, a plurality of supporting rods 23 arranged on the supporting plate 22 and used to support the shell 10, a plurality of guide blocks 24 arranged on the supporting plate 22 and used to guide the shell 10, and a plurality of linear bearing guide columns 25 arranged on the base 1 and used to support the supporting plate 22. Here, to ensure that the shell 10 can remain stable during the entire clamping process, a plurality of supporting rods 23 and a plurality of guide blocks 24 are used to position and support the shell 10. Meanwhile, the linear bearing guide columns 25 are arranged on the base 1, which can support the supporting plate 22 when the supporting plate 22 descends to the lowest point for clamping, avoiding shaking of the supporting plate 22, to ensure the stability and accuracy of the shell 10 processing.

[0029] The jacking oil cylinder 21 includes: an oil cylinder body 211 arranged on the base 1, a connecting rod 212 driven to extend and retract by the oil cylinder body 211, and a top cover 213 fixed to the supporting plate 22. When the oil cylinder body 211 drives the connecting rod 212 to extend, the connecting rod 212 pushes the top cover 213 and drives the supporting plate 22 to lift. Here, the shell 10 is placed on the lifting slide assembly 2 before clamping, and is pushed to the inner side of the lifting slide assembly 2. Further, the whole machine starts to run, the jacking oil cylinder 21 of the lifting slide assembly 2 retracts, the supporting plate 22 descends and makes the shell 10 fall to the positioning pin 3; after clamping is completed, the jacking oil cylinder 21 lifts the supporting plate 22 to rise, so as to take away the shell 10.

[0030] The shell 10 comprises a first casting 61 in a cylindrical shape and placed on the supporting plate 22, and a second casting 62 placed on the first casting 61. The auxiliary pressing device 5 comprises an auxiliary clamping cylinder 51 arranged above the shell 10 and used for pressing the shell 10 downward, and an auxiliary supporting cylinder 52 arranged on the base 1 and used for jacking up the shell 10. The base 1 is provided with at least one first mounting column 11 for placing the auxiliary pressing device 5, the first mounting column 11 is provided with a clamping cylinder table 111 for mounting the auxiliary clamping cylinder 51, the first mounting column 11 is also formed with a supporting cylinder table 112 for mounting the auxiliary supporting cylinder 52, and the height of the clamping cylinder table 111 is higher than the height of the supporting cylinder table 112. Here, it can be understood that the auxiliary clamping cylinder 51 exerts a downward force on the first casting 61 of the shell 10, and the auxiliary supporting cylinder 52 exerts an upward force on the second casting 62 of the shell 10, and the two opposite forces of pushing and clamping are used to clamp and process the shell 10, so that the first casting 61 is tightly fixed on the second casting 62.

[0031] The base 1 is provided with at least one second mounting column 12 for placing the main pressing cylinder 4; the base 1 is also provided with a plurality of protection supporting columns 13 for preventing the shell 10 from descending excessively, and the supporting plate 22 is correspondingly provided with a plurality of first avoiding positions 221 for the protection supporting columns 13 to extend upward. Here,

[0032] The main pressing cylinder 4 comprises a pressing cylinder body 41 arranged on the second mounting column 12, a piston column 42 driven by the pressing cylinder body 41 and capable of telescoping, a main pressing connecting rod 43 arranged on the pressing cylinder body 41 in a swingable manner, and a pressing arm 44 connected to the main pressing connecting rod in a swingable manner and swung by the piston column 42. Here,

[0033] The number of the positioning pins 3 is two, and the positioning pin 3 comprises a positioning seat 31 arranged on the base 1, a pin head 32 mounted on the positioning seat 31 and used for positioning the shell 10, and a guide screw 33 arranged on the pin head 32 and used for guiding the shell 10. Here, the two positioning pins 3 can more accurately and quickly position the shell 10, and ensure that the shell 10 remains stable during clamping, further enhancing the stability and accuracy of the shell 10 processing.

[0034] In summary, in the utility model, through the lifting sliding table subassembly 2 carries the shell 10 and moves up and down, make the shell 10 automatically slide to with the positioning pin 3 and connect, then through the main pressure cylinder 4 and the auxiliary pressure closer 5 to the shell 10 and carry out clamping, effectively realized accurate and fast positioning, the structure can be popularized and applied to various shell clamps.In addition, compared with the prior art, the utility model adopts the lifting sliding table subassembly 2 and the positioning pin 3 of hydraulic pressure instead of the traditional positioning claw, while ensuring positioning accuracy, simplifying the structure, making the whole more stable, suitable for long time high strength use, beneficial to maintenance.

[0035] Of course, the above only for the specific embodiments of the utility model, not to limit the utility model implementation range, all equivalent changes or modifications made to the structure, features and principles described in the utility model patent application scope, should be included in the utility model patent application scope.

Claims

1. A welded housing hydraulic clamp characterized by, The utility model relates to a shell positioning and clamping device, which comprises the following components: a base (1); a lifting slide assembly (2) arranged on the base (1) in a liftable manner and used for driving a shell (10) to lift; at least one positioning pin (3) arranged on the base (1) and used for positioning the shell (10); at least one main pressing cylinder (4) arranged on the base (1) and used for pressing the shell (10) downward to clamp; at least one auxiliary pressing device (5) arranged on the base (1) and used for clamping the shell (10); when the lifting slide assembly (2) carrying the shell (10) descends to the positioning pin (3), the main pressing cylinder (4) and the auxiliary pressing device (5) clamp the shell (10).

2. A hydraulic fixture for welding a housing according to claim 1, characterized in that: The lifting slide assembly (2) comprises a jacking oil cylinder (21) arranged on the base (1), a supporting plate (22) driven by the jacking oil cylinder (21), a plurality of supporting rods (23) arranged on the supporting plate (22) and used for supporting the shell (10), a plurality of guide blocks (24) arranged on the supporting plate (22) and used for guiding the shell (10), and a plurality of linear bearing guide columns (25) arranged on the base (1) and used for supporting the supporting plate (22).

3. A hydraulic fixture for welding a housing according to claim 2, characterized in that: The jacking oil cylinder (21) comprises an oil cylinder body (211) arranged on the base (1), a connecting rod (212) driven by the oil cylinder body (211) to extend and retract, and a top cover (213) fixed to the supporting plate (22), when the oil cylinder body (211) drives the connecting rod (212) to extend, the connecting rod (212) drives the top cover (213) and drives the supporting plate (22) to lift.

4. The hydraulic fixture of claim 1, wherein: The auxiliary pressing device (5) comprises an auxiliary clamping cylinder (51) arranged above the shell (10) and used for pressing the shell (10) downward, and an auxiliary supporting cylinder (52) arranged on the base (1) and used for jacking the shell (10).

5. The hydraulic fixture of claim 1, wherein: The base (1) is provided with at least one first mounting column (11) for placing the auxiliary pressing device (5), the first mounting column (11) is provided with a clamping cylinder table (111) for mounting the auxiliary clamping cylinder (51), the first mounting column (11) is further formed with a supporting cylinder table (112) for mounting the auxiliary supporting cylinder (52), and the height of the clamping cylinder table (111) is higher than the height of the supporting cylinder table (112).

6. A hydraulic fixture for welding a shell according to any one of claims 1-5, characterized in that: The base (1) is provided with at least one second mounting column (12) for placing the main pressing cylinder (4), and the base (1) is further provided with a plurality of protection supporting columns (13) for preventing the shell (10) from descending excessively, and the supporting plate (22) is provided with a plurality of first avoiding positions (221) for the protection supporting columns (13) to extend upward.

7. A hydraulic fixture for welding a housing according to claim 6, characterized in that: The main pressing cylinder (4) comprises a pressing cylinder body (41) arranged on the second mounting column (12), a piston column (42) driven by the pressing cylinder body (41) and capable of being extended and retracted, a main pressing connecting rod (43) arranged on the pressing cylinder body (41) in a swingable manner, and a pressing arm (44) connected to the main pressing connecting rod in a swingable manner and driven by the piston column (42) to swing.

8. A hydraulic fixture for welding a housing according to claim 6, characterized in that: The number of the positioning pins (3) is two, and the positioning pin (3) comprises a positioning seat (31) arranged on the base (1), a pin head (32) mounted on the positioning seat (31) and used for positioning the shell (10), and a guide screw (33) arranged on the pin head (32) and used for guiding the shell (10).

9. A hydraulic fixture for welding a shell according to any one of claims 7-8, characterized in that: The shell (10) comprises a first casting (61) in a cylindrical shape and placed on the supporting plate (22), and a second casting (62) covered on the first casting (61).

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