Hydraulic structure of clamp

Abstract

The utility model discloses a clamp hydraulic structure which comprises a rotary oil separator, a rotary table and a clamp located on the rotary table and further comprises a machine tool top part, a linear motion assembly and a supporting table, the supporting table is located below the machine tool top part, and the linear motion assembly is located in the machine tool top part and moves in the length direction of the machine tool top part. The top of the rotary oil distributor is fixedly connected with the linear motion assembly, and oil pipes at the bottom of the rotary oil distributor are bundled and fixed through the supporting table and connected with the clamp. The linear motion assembly and the drag chain are additionally arranged on the machine tool top part, the top of the rotary oil distributor is connected with the linear motion assembly, the linear motion assembly can ensure that the rotary oil distributor conducts linear motion along with the rotary table, meanwhile, rotation of the top of the rotary oil distributor is limited, and knotting or twisting of pipelines is avoided; 360-degree automatic machining of the hydraulic structure of the clamp can be achieved with relatively low cost.

Description

Technical Field

[0001] This utility model relates to the field of machine tool equipment modification technology, and in particular to a hydraulic structure for a clamp. Background Technology

[0002] Hydraulic clamps are fixtures that use hydraulic components to replace mechanical parts, achieving automatic positioning, support, and clamping of workpieces through hydraulic control. They have advantages such as high clamping force, reliable clamping, stable operation, and ease of use, and are currently widely used in CNC machine tools, machining centers, automated production lines, and other scenarios.

[0003] In existing technologies, there are generally three solutions for adding hydraulic clamps:

[0004] Option 1: Using a pressure-holding fixture requires manual insertion and removal of the oil pipes to ensure the fixture functions properly. This option has the lowest cost, but it cannot automate the processing.

[0005] Option 2: Drill a hole in the top of the machine tool and connect the oil pipe directly to the fixture from the top of the machine tool. This option requires a large amount of space for the pipeline, and the rotation angle of the turntable is limited by the oil pipe, which places high demands on the machining method.

[0006] Option 3: Replace the original rotary table with a center-outlet oil rotary table (the oil lines are inside the rotary table and directly connected to the fixture on the table surface). This option is the most expensive, and the height of the rotary table depends on the number of oil lines, which can easily lead to incompatibility between the new rotary table and the machine tool, requiring additional design of the machine tool's internal structure.

[0007] Therefore, there is an urgent need for a low-cost hydraulic clamp that can be automated. Summary of the Invention

[0008] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to realize a clamping hydraulic structure that can achieve 360° automated processing at a relatively low cost.

[0009] The objective of this utility model is achieved through the following technical solution:

[0010] A clamping hydraulic structure includes a rotary oil distributor, a turntable, and a clamp located on the turntable. The clamping hydraulic structure also includes a machine tool top component, a linear motion component, and a support platform. The support platform is located below the machine tool top component. The linear motion component is located inside the machine tool top component and moves along the length of the machine tool top component. The top of the rotary oil distributor is fixedly connected to the linear motion component. The oil pipe at the bottom of the rotary oil distributor is bundled and fixed through the support platform and connected to the clamp.

[0011] Preferably, the clamping hydraulic structure further includes a cable chain located inside the top component of the machine tool, the cable chain being used to hold oil pipes.

[0012] Preferably, one end of the oil pipe is connected to a rotary oil distributor to ensure smooth oil transmission from the rotary oil distributor, and the other end is connected to the hydraulic station via the cable chain to realize the circulation supply of oil.

[0013] Preferably, the cable chain is arranged in parallel with the linear motion component.

[0014] Preferably, the linear motion assembly includes a linear guide rail and a slider that slides on the linear guide rail. The slider is connected to the cable chain, and the top of the rotary oil separator is fixedly connected to the slider to ensure that the rotary oil separator follows the linear guide rail in a linear motion and to limit the rotation of the top of the rotary oil separator.

[0015] Preferably, the clamp hydraulic structure further includes a bellows cover, which is located at the waist of the rotary oil separator.

[0016] Preferably, the bellows cover is sealed to the rotary oil separator.

[0017] Preferably, the support platform is fixed on the turntable.

[0018] Preferably, the number of the clamps is multiple.

[0019] Preferably, the linear motion component and the turntable are located on the same side.

[0020] Compared with existing technologies, the hydraulic clamping structure of this utility model has the following advantages:

[0021] (1) The hydraulic fixture structure of this application connects the top of the rotary distributor to the linear motion component by adding a linear motion component and a cable chain to the top component of the machine tool. The linear motion component ensures that the rotary distributor moves linearly with the turntable, while limiting the rotation of the top of the rotary distributor to prevent the pipeline from tangling or twisting. The cable chain can effectively extend the service life of the oil pipe and help reduce the direct contact between the oil pipe and the machine housing or other components during the movement, thereby reducing friction. By reducing the direct contact between the oil pipe and the external environment, the cable chain can reduce the aging and wear rate of the oil pipe, extend its service life, and achieve 360° automated machining of the hydraulic fixture structure at a relatively low cost.

[0022] (2) The hydraulic structure of the clamp in this application connects the bottom of the rotating oil distributor to the support platform by adding a support platform on the turntable. With the support platform, the oil pipes can be bundled together and have a fixed shape, occupying little space, and there is no need to worry about the reduction in service life caused by local stress or complex joint stress.

[0023] (3) The hydraulic structure of the fixture in this application adds a bellows cover to the waist of the rotating oil distributor to effectively separate the machining area and the pipeline area, preventing the cutting fluid from leaking out. This application has the advantages of simple modification, low cost, large space utilization and convenient maintenance when used in industrial equipment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the hydraulic clamping structure of this application.

[0025] In the diagram: 100, top component of the machine tool; 200, rotary oil distributor; 300, support table; 400, turntable; 500, fixture; 600, linear motion assembly; 601, linear guide; 602, slider; 700, bellows cover; 800, cable chain. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or it can be fixed through another intermediate component. When a component is said to be "connected to" another component, it can be directly connected to the other component or it may be fixed through another intermediate component. When a component is said to be "set on" another component, it can be set directly on the other component or it may be set through another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] Figure 1This utility model discloses a hydraulic clamping structure, including a rotary distributor 200, a turntable 400, and a clamp 500 located on the turntable 400. The hydraulic clamping structure also includes a machine tool top component 100, a linear motion component 600, and a support platform 300. The support platform 300 is located below the machine tool top component 100. The linear motion component 600 is located inside the machine tool top component 100 and moves along the length of the machine tool top component 100. The top of the rotary distributor 200 is fixedly connected to the linear motion component 600. The oil pipes at the bottom of the rotary distributor 200 are bundled and fixed through the support platform 300 and connected to the clamp 500.

[0030] Specifically, the linear motion assembly 600 includes a linear guide rail 601 and a slider 602 that slides on the linear guide rail 601. The slider 602 is connected to the cable chain 800. The top of the rotary distributor 200 is fixedly connected to the slider 602 to ensure that the rotary distributor 200 follows the linear guide rail 601 in a linear motion and to limit the rotation of the top of the rotary distributor 200.

[0031] Specifically, the support platform 300 is fixed on the turntable 400.

[0032] Specifically, the number of fixtures 500 can be one or more, depending on actual needs. In one embodiment of this application, the number of fixtures 500 is two.

[0033] The support platform 300 is used to connect the bottom of the turntable 400 and the rotary oil separator 200. The specific location depends on the machining layout.

[0034] In one embodiment of this application, the linear motion component 600 and the turntable 400 are located on the same side, which can minimize the oil passage.

[0035] The clamping hydraulic structure also includes a cable carrier 800, which is located inside the machine tool top component 100 and is used to hold oil pipes.

[0036] Specifically, one end of the oil pipe is connected to the rotary distributor 200 to ensure smooth oil transmission from the rotary distributor 200, and the other end is connected to the hydraulic station via the cable chain 800 to realize the circulation supply of oil.

[0037] Specifically, the cable chain 800 and the linear motion component 600 are arranged in parallel.

[0038] The clamp hydraulic structure also includes a bellows cover 700, which is located at the waist of the rotary distributor 200.

[0039] Specifically, the accordion cover 700 is sealed to the rotary oil separator 200.

[0040] Specifically, there are two accordion covers 700. In some other embodiments, the number of accordion covers 700 is set according to actual needs.

[0041] In this application, the hydraulic clamping structure, when in use, utilizes pre-made parts in the visible area, which is relatively simple and quick in the prior art. Therefore, a connection point is added to the turntable 400 on the machine tool top component 100, and a pre-made rotary distributor 200 (the top and bottom movements of the rotary distributor 200 are relatively independent) is purchased and adapted for installation, which is quick and simple. A linear motion assembly 600 and a cable chain 800 are added to the machine tool top component 100. The top of the rotary distributor 200 is connected to the linear motion assembly 600, at which point the oil pipe exits from the rotary distributor 200 and connects to the hydraulic station via the cable chain 800. The linear motion assembly 600 ensures that the rotary distributor 200 follows the turntable 400 in linear motion, while restricting the rotation of the top of the rotary distributor 200 to prevent the pipeline from tangling or twisting.

[0042] This application's hydraulic fixture structure, by adding a linear motion component 600 and a cable chain 800 to the machine tool top component 100, connects the top of the rotary distributor 200 to the linear motion component 600. The linear motion component 600 ensures that the rotary distributor 200 follows the turntable 400 in a linear motion, while limiting the rotation of the top of the rotary distributor 200 to prevent the pipeline from tangling or twisting. The cable chain 800 effectively extends the life of the oil pipe and helps reduce direct contact between the oil pipe and the machine housing or other components during movement, thereby reducing friction. By reducing the direct contact between the oil pipe and the external environment, the cable chain 800 reduces the aging and wear rate of the oil pipe, extending its service life, and enables 360° automated machining of the hydraulic fixture structure at a relatively low cost. By adding a support platform 300 to the turntable 400, the bottom of the rotary distributor 200 is connected to the support platform 300. At this point, the oil pipe emerges from the rotary distributor 200, descends along the support platform 300, and connects to the oil inlet of the clamp 500. Supported by the support platform 300, the oil pipes can be bundled together and maintain a fixed shape, occupying minimal space and eliminating concerns about reduced lifespan due to localized stress or complex joint stress. A bellows cover 700 is added to the waist of the rotary distributor 200 to effectively separate the machining area and the pipeline area, preventing cutting fluid leakage. This application, when used in industrial equipment, offers advantages such as simple modification, low cost, high space utilization, and convenient maintenance.

[0043] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of this utility model, and all of these fall within the protection scope of this utility model.

Claims

1. A clamp hydraulic structure comprising a rotary oil distributor, a turntable, and a clamp located on the turntable, characterized by: The clamp hydraulic structure further comprises a machine tool top part, a linear motion assembly and a support table, the support table is located below the machine tool top part, the linear motion assembly is located in the machine tool top part and moves along the length direction of the machine tool top part, the top of the rotary oil distributor is fixedly connected with the linear motion assembly, and the oil pipe at the bottom of the rotary oil distributor is fixedly gathered through the support table and connected with the clamp.

2. The clamp hydraulic structure according to claim 1, characterized by: The clamp hydraulic structure further comprises a drag chain, the drag chain is located in the machine tool top part, and the drag chain is used for placing the oil pipe.

3. The clamp hydraulic structure according to claim 2, characterized by: One end of the oil pipe is communicated with the rotary oil distributor, so that the oil liquid is smoothly transmitted from the rotary oil distributor, and the other end of the oil pipe is connected to the hydraulic station through the drag chain, so that the circulation supply of the oil liquid is realized.

4. The clamp hydraulic structure according to claim 2, characterized by: The drag chain is arranged in parallel with the linear motion assembly.

5. The clamp hydraulic structure according to claim 4, characterized by: The linear motion assembly comprises a linear guide rail and a sliding block sliding on the linear guide rail, the sliding block is connected with the drag chain, and the top of the rotary oil distributor is fixedly connected with the sliding block, so as to ensure that the rotary oil distributor moves linearly along the linear guide rail and is limited to rotate.

6. The clamp hydraulic structure according to claim 1, characterized by: The clamp hydraulic structure further comprises an organ cover, and the organ cover is located at the waist of the rotary oil distributor.

7. The clamp hydraulic structure according to claim 6, characterized by: The organ cover is sealingly connected with the rotary oil distributor.

8. The clamp hydraulic structure according to claim 1, characterized by: The support table is fixed on the rotary table.

9. The clamp hydraulic structure according to claim 1, characterized by: The number of the clamps is multiple.

10. The clamp hydraulic structure according to claim 1, characterized by: The linear motion assembly and the rotary table are located on the same side.

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