Long-stroke auxiliary supporting device for hydraulic clamp

Abstract

The utility model discloses a hydraulic fixture long stroke auxiliary support device, including outer cylinder, primary support cylinder and secondary support cylinder, outer cylinder is fixed on the fixed seat, and the fixed seat is fixed on the fixture, the primary support cylinder is installed in the outer cylinder, the secondary support cylinder is installed in the primary support cylinder, and the secondary support cylinder is fixed on the fixture. An ejector rod is installed at the upper end of the second-stage supporting cylinder, and a workpiece at the front end of the second-stage supporting cylinder is ejected to the position of a workpiece supporting face. And a sealing cover is mounted at the upper end of the outer cylinder body. The device is automatically unfolded and supported through the ingeniously-designed adjusting mechanism, the adjusting time is shortened, and the working efficiency is improved. The unique design effectively avoids interference between a traditional supporting rod and a workpiece part, collision damage to products is reduced, and the yield is improved. In the machining process, through precise cooperation of the two stages of supporting cylinders, it is ensured that the ejector rod stably supports the workpiece to the preset position, the rigidity of the workpiece is enhanced, deformation or displacement is prevented, and therefore the machining precision and the surface quality are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of long-stroke auxiliary support devices for hydraulic fixtures, and specifically relates to a long-stroke auxiliary support device for hydraulic fixtures. Background Technique

[0002] In machining, in addition to machine tools, cutting tools, and measuring tools, machine tool fixtures are also required during batch production. They are the connecting devices between the machine tool and the workpiece, enabling the workpiece to obtain the correct position relative to the machine tool. The quality of the machine tool fixture will directly affect the position accuracy of the machined surface of the workpiece. Usually, the process of determining the correct position of the workpiece on the machine tool or in the fixture is called positioning. After the workpiece is positioned, in order to prevent it from being damaged due to the action of cutting force, gravity, etc. during machining, a certain mechanism or device should be used to fix the workpiece. The operation of keeping the workpiece in the positioned position during machining is called clamping. The process of positioning and clamping the workpiece is called fixturing. Whether the workpiece is fixtured correctly, quickly, conveniently, and reliably will directly affect the machining quality, production efficiency, manufacturing cost, and operation safety of the workpiece. Machine tool fixtures are widely used in production. The functions of machine tool fixtures can be summarized as follows: ensuring machining accuracy, improving production efficiency, and reducing labor intensity. The basic requirements that machine tool fixtures should meet include the following aspects: ensuring machining accuracy, the overall scheme of the fixture should be adapted to the annual production program, being safe, convenient, reducing labor intensity, having smooth chip removal, and the fixture should have good strength, stiffness, and structural manufacturability. However, when facing special-shaped products, traditional clamping components will hinder the support and handling of the workpiece.

[0003] Such problems have been found in the machining of steering gear housings. The workpiece is taken and placed horizontally to achieve workpiece switching. If traditional support rods are assembled on the fixture, when on-site personnel take and place the workpiece, the traditional support rods will interfere with the steering end bowl mouth, and it is inevitable that product bumps and scratches will occur on-site. Content of the Utility Model

[0004] The technical problem solved by the utility model is to overcome the defects mentioned in the background technique and provide a long-stroke auxiliary support device for hydraulic fixtures.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A long-stroke auxiliary support device for hydraulic fixtures, including an outer cylinder body, a primary support cylinder, and a secondary support cylinder. The outer cylinder body is fixed on a fixed seat, and the fixed seat is fixed on the fixture. The primary support cylinder is installed inside the outer cylinder body, and the secondary support cylinder is installed inside the primary support cylinder. A push rod is installed at the upper end of the secondary support cylinder, and the front end of the secondary support cylinder jacks up the workpiece to the workpiece support surface position. A sealing cover is installed at the upper end of the outer cylinder body, a liquid outlet pipe orifice is opened on the outer cylinder body on the side of the sealing cover, and a liquid inlet pipe orifice is opened at the bottom of the outer cylinder body.

[0006] Furthermore, a pressing ring installed at the port of the outer cylinder is provided at the upper end of the sealing cover, and a flow groove with a groove structure is provided below the pressing ring, and the position of the flow groove corresponds to the position of the liquid outlet pipe orifice.

[0007] Furthermore, the first-stage support cylinder is a T-shaped cylindrical structure, and the second-stage support cylinder installed at the upper end of the first-stage support cylinder slides up and down on the first-stage support cylinder. And a hydraulic cylinder cover is provided at the upper end of the first-stage support cylinder.

[0008] Furthermore, a flow pipeline is provided at the middle position of the bottom of the first-stage support cylinder, and second-stage pipelines are provided on both sides of the flow pipeline.

[0009] Furthermore, a safety locking device is further included, and the device is arranged between the second-stage support cylinder and the ejector rod. When the ejector rod reaches a predetermined support position, the safety locking device can lock the ejector rod.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] Through a delicately designed adjustment mechanism, namely the combination of the outer cylinder, the first-stage support cylinder, the second-stage support cylinder and the ejector rod, the device significantly improves the placement and taking efficiency of workpieces on the machine tool fixture. When the oil cylinder is in the released state, all support components are retracted into the outer cylinder, providing an open operation space for on-site personnel and enabling the workpiece to be conveniently and quickly installed on the fixture. Once the workpiece is placed, by simply operating the start button, the device can automatically complete the support operation, greatly shortening the adjustment time and thus improving the overall work efficiency. During the taking and placing process of workpieces, traditional support rods often interfere with components such as the turning end bowl mouth, resulting in frequent occurrence of product bumps and scratches. However, this hydraulic fixture long-stroke auxiliary support device avoids this interference phenomenon through optimized structural design. During the installation and disassembly of the workpiece, the support components can be completely retracted or expanded without causing any unnecessary contact or collision to the workpiece, effectively reducing the risk of product damage and improving the yield rate of the product. During the machining process, the workpiece needs to bear various forces such as cutting force and gravity. If the workpiece has insufficient rigidity, it is prone to deformation or displacement, thus affecting the machining accuracy. Through the coordinated action of the first-stage support cylinder and the second-stage support cylinder, the device can accurately lift the ejector rod to the workpiece support surface position, providing stable and reliable support for the workpiece. This support method not only ensures the rigidity of the workpiece during the machining process but also helps to improve the machining accuracy and surface quality. Description of the Drawings

[0012] Figure 1 It is a schematic diagram of the retracted structure of the present utility model;

[0013] Figure 2 It is a schematic diagram of the extended structure of the present utility model;

[0014] Figure 3 Schematic diagram of the hydraulic channel of the structure of the present utility model;

[0015] Figure 4 Schematic diagram of the sealing cover of the structure of the present utility model.

[0016] Reference numerals in the figure: 1, outer cylinder body; 11, liquid inlet pipe orifice; 12, liquid outlet pipe orifice; 13, sealing cover; 131, pressing ring; 132, flow-through groove; 2, primary support cylinder; 21, flow pipeline; 22, secondary pipeline; 3, secondary support cylinder; 4, ejector rod; 5, workpiece; 6, fixed seat. Specific implementation mode

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0018] Please refer to Figures 1-4 , the present utility model provides a technical solution: a long-stroke auxiliary support device for a hydraulic fixture, including an outer cylinder body 1, a primary support cylinder 2 and a secondary support cylinder 3. The outer cylinder body 1 is fixed on the fixed seat 6, and the fixed seat 6 is fixed on the fixture. The primary support cylinder 2 is installed inside the outer cylinder body 1, and the secondary support cylinder 3 is installed inside the primary support cylinder 2. The ejector rod 4 is installed at the upper end of the secondary support cylinder 3, and the workpiece 5 at the front end of the secondary support cylinder 3 is jacked up to the position of the support surface of the workpiece 5; the sealing cover 13 is installed at the upper end of the outer cylinder body 1, and the liquid outlet pipe orifice 12 is opened on the outer cylinder body 1 on the side of the sealing cover 13, and the liquid inlet pipe orifice 11 is opened at the bottom of the outer cylinder body 1.

[0019] The pressing ring 131 installed at the upper end of the sealing cover 13 is arranged at the port of the outer cylinder body 1, and the flow-through groove 132 with a groove structure is arranged below the pressing ring 131, and the position of the flow-through groove 132 corresponds to the position of the liquid outlet pipe orifice 12; the main function of the pressing ring 131 is to provide sufficient pressure to ensure the tight connection between the sealing cover 13 and the outer cylinder body 1 and prevent liquid leakage. The flow-through groove 132 with a groove structure: is used to allow liquid to flow inside the outer cylinder body. The groove design of the flow-through groove not only helps the smooth flow of the fluid, but also increases the structural stability.

[0020] Reinforcing rib structures are provided inside the outer cylinder body 1 to enhance the strength and rigidity of the fixed seat. The reinforcing rib structures are arranged along the length direction and the width direction of the fixed seat to form a stable support framework, effectively preventing deformation or damage caused by uneven force during the workpiece support process, and improving the overall stability and service life of the device;

[0021] The primary support cylinder 2 is a T-shaped cylindrical structure, and the secondary support cylinder 3 installed at the upper end of the primary support cylinder 2 slides up and down on the primary support cylinder 2. And a hydraulic cylinder cover is provided at the upper end of the primary support cylinder 2.

[0022] A flow pipeline 21 is provided at the middle position of the bottom of the primary support cylinder 2, and secondary pipelines 22 are provided on both sides of the flow pipeline 21.

[0023] It also includes a safety locking device which is arranged between the secondary support cylinder 3 and the ejector rod 4. When the ejector rod reaches the predetermined support position, the safety locking device can lock the ejector rod 4 to prevent it from displacing or falling off due to external force during the processing, ensuring the safe and stable support of the workpiece 5 and improving the safety of the processing process.

[0024] Install the fixed seat 6 at the designated position of the machine tool fixture through fasteners such as bolts to ensure firm fixation and connect the hydraulic pipelines.

[0025] When the oil cylinder is in the released state, the primary support cylinder 2, the secondary support cylinder 3 and the ejector rod 4 all contract inside the outer cylinder body 1 and do not occupy the space for workpiece taking. The on-site personnel can easily place the workpiece 5 on the fixture in the horizontal direction without worrying about interference with the support rod.

[0026] After the workpiece is placed, the on-site personnel press the start button to start the hydraulic control system.

[0027] The hydraulic control system first drives the primary support cylinder 2 to rise, driving the secondary support cylinder 3 and the ejector rod 4 to rise together.

[0028] When the primary support cylinder 2 reaches the predetermined height, the secondary support cylinder 3 continues to rise until the top end of the ejector rod 5 contacts and supports the support surface of the workpiece 5. At this time, the workpiece 5 is stably supported on the fixture and subsequent processing operations can be carried out.

[0029] After the processing is completed, press the start button again. The hydraulic control system controls the secondary support cylinder 3 to descend first, and then the primary support cylinder 2 descends to retract the ejector rod 4 into the outer cylinder body 1. The on-site personnel can easily take the workpiece 5 in the horizontal direction to complete the entire process of workpiece processing and taking.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A long-stroke auxiliary support device for a hydraulic fixture, comprising an outer cylinder body (1), a first-stage support cylinder (2) and a second-stage support cylinder (3), characterized in that: The outer cylinder body (1) is fixed on the fixed seat (6), and the fixed seat (6) is fixed on the fixture. Inside the outer cylinder body (1), a primary support cylinder (2) is installed. Inside the primary support cylinder (2), a secondary support cylinder (3) is installed. At the upper end of the secondary support cylinder (3), a ejector rod (4) is installed. The workpiece (5) at the front end of the secondary support cylinder (3) is lifted to the position of the support surface of the workpiece (5). At the upper end of the outer cylinder body (1), a sealing cover (13) is installed. On the outer cylinder body (1) on the side of the sealing cover (13), a liquid outlet pipe opening (12) is provided. At the bottom of the outer cylinder body (1), a liquid inlet pipe opening (11) is provided.

2. The long-stroke auxiliary support device for a hydraulic fixture according to claim 1, wherein: At the upper end of the sealing cover (13), a compression ring (131) installed at the port of the outer cylinder body (1) is provided. Below the compression ring (131), a flow channel (132) with a groove structure is provided, and the position of the flow channel (132) corresponds to the position of the liquid outlet pipe opening (12).

3. The long-stroke auxiliary support device for a hydraulic fixture according to claim 1, wherein: The primary support cylinder (2) is a T-shaped cylindrical structure. The secondary support cylinder (3) installed at the upper end of the primary support cylinder (2) slides up and down on the primary support cylinder (2). And at the upper end of the primary support cylinder (2), a hydraulic cylinder cover is provided.

4. The long-stroke auxiliary support device for a hydraulic fixture according to claim 2, characterized in that: At the middle position of the bottom of the primary support cylinder (2), a flow pipeline (21) is provided. On both sides of the flow pipeline (21), secondary pipelines (22) are provided.

5. The long-stroke auxiliary support device for a hydraulic fixture according to claim 1, characterized in that: It further includes a safety locking device, which is arranged between the secondary support cylinder (3) and the ejector rod (4). When the ejector rod reaches the predetermined support position, the safety locking device can lock the ejector rod (4).

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