Method for machining oil passage of oil pressure clamp base plate

Abstract

This invention relates to a method for machining the oil passages of a hydraulic clamp base plate with stable oil supply. Oil guide grooves are respectively opened on the upper surface of the bottom steel plate, the upper and lower surfaces of the middle steel plate, and the lower surface of the top steel plate. The upper and lower steel plates are integrally formed by welding and spreading the oil guide grooves together, creating a multi-layered oil passage. This method is easy to manufacture and does not have high requirements for the quality of the steel plates; ordinary steel can be used. Furthermore, it eliminates the need for later plugging of drilled holes, thus avoiding oil leakage due to plugging. Since the oil passages are machined on a plane, they can be shaped into curved lines as required, and their shape can be flexibly designed according to flow rate requirements. The cross-section of the oil passages can also be designed into different shapes according to flow rate needs. Through these improvements, the method combines the advantages of long service life, low manufacturing cost, stable oil supply to the hydraulic clamp, and stable clamping performance.

Description

[0001] This case is a divisional application of the patent application with application number 202211176989.2, application date 2022-09-26, entitled "Method for processing the oil circuit of the base plate of a hydraulic clamp". Technical Field

[0002] This invention relates to the field of hydraulic fixture processing technology, and in particular to a method for processing the hydraulic circuit of a hydraulic fixture base plate with stable oil supply. Background Technology

[0003] Hydraulic clamps are important components of machine tools, used to clamp workpieces to be processed. The power source for hydraulic clamps relies on hydraulic clamping. Therefore, oil circuits need to be opened on the base plate of the hydraulic clamp to allow oil to enter each individual hydraulic clamp on the base plate and provide power to it.

[0004] In the existing technology, the base plate of the hydraulic clamp needs to be a thick plate, and the internal oil circuit is machined by deep hole drilling. The oil circuit can only be a straight cylindrical shape. The oil circuit is formed by drilling multiple straight, crisscrossing deep holes. This structure requires the plugging of the excess holes left during drilling, which can easily cause hydraulic oil leakage, resulting in insufficient clamping force of the product.

[0005] Therefore, how to improve the processing method of the hydraulic circuit structure of the base plate of the hydraulic clamp so that the hydraulic circuit structure of the base plate of the hydraulic clamp has the advantages of long service life, low manufacturing cost, stable oil supply and stable clamping performance has become an urgent technical problem to be solved. Summary of the Invention

[0006] The technical problem to be solved by this invention is: how to improve the processing method of the hydraulic circuit structure of the base plate of the hydraulic clamp, so that the hydraulic circuit structure of the base plate of the hydraulic clamp has the advantages of long service life, low manufacturing cost, stable oil supply of the hydraulic clamp, and stable clamping performance.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0008] A method for machining the oil circuit of a hydraulic clamp base plate with stable oil supply includes the following steps:

[0009] Step 1: Prepare the bottom steel plate, middle steel plate and top steel plate, and drill the required mounting holes for the hydraulic clamp in the bottom steel plate, middle steel plate and top steel plate respectively;

[0010] Step 2: A first oil guide groove is opened on the upper surface of the bottom steel plate, a second oil guide groove that is a mirror image of the first oil guide groove is opened on the lower surface of the middle steel plate, a third oil guide groove is opened on the upper surface of the middle steel plate, and a fourth oil guide groove that is a mirror image of the third oil guide groove is opened on the lower surface of the top steel plate.

[0011] Step 3: Position and stack the bottom steel plate, middle steel plate and top steel plate from bottom to top and weld them into one piece, so that the first oil guide groove and the second oil guide groove are combined to form the first oil channel, and the third oil guide groove and the fourth oil guide groove are combined to form the second oil channel. The first oil channel and the second oil channel are the bottom plate oil channels.

[0012] Furthermore, in the above-mentioned method for processing the oil circuit of the hydraulic clamp base plate with stable oil supply, step 3 specifically involves: fabricating multiple first positioning pins and multiple second positioning pins, wherein the side of the first positioning pin matches a section of the first oil guide groove, the side of the first positioning pin matches a corresponding section of the second oil guide groove, the side of the second positioning pin matches a section of the third oil guide groove, and the side of the second positioning pin matches a corresponding section of the fourth oil guide groove; the bottom steel plate, the middle steel plate, and the top steel plate are sequentially positioned and stacked from bottom to top, and during the stacking process, positioning is achieved through the first and second positioning pins; after stacking is completed, the first positioning pins are detached from the bottom and middle steel plates, and the second positioning pins are detached from the middle and top steel plates; the bottom steel plate, the middle steel plate, and the top steel plate are welded together to form a whole, so that the first and second oil guide grooves combine to form the first oil channel, and the third and fourth oil guide grooves combine to form the second oil channel; the first and second oil channels constitute the oil circuit of the base plate.

[0013] Furthermore, in the above-mentioned method for machining the oil circuit of the hydraulic clamp base plate with stable oil supply, the first locating pin and the second locating pin are both made of ice.

[0014] Furthermore, in the above-mentioned method for machining the oil circuit of the bottom plate of the hydraulic clamp with stable oil supply, the thickness of the bottom steel plate is 10mm.

[0015] Furthermore, in the above-mentioned method for machining the oil circuit of the hydraulic clamp base plate with stable oil supply, the thickness of the middle layer steel plate is 10mm.

[0016] Furthermore, in the above-mentioned method for machining the oil circuit of the hydraulic clamp base plate with stable oil supply, the thickness of the top steel plate is 10mm.

[0017] Furthermore, in the above-mentioned method for machining the oil circuit of the hydraulic clamp base plate with stable oil supply, the cross-sectional area of ​​the first oil passage is cylindrical, semi-circular, square, or trapezoidal.

[0018] Furthermore, in the above-mentioned method for machining the oil circuit of the hydraulic clamp base plate with stable oil supply, the cross-sectional area of ​​the second oil passage is cylindrical, semi-circular, square, or trapezoidal.

[0019] The beneficial effects of this invention are as follows: By opening oil guide grooves on the upper surface of the bottom steel plate, the upper and lower surfaces of the middle steel plate, and the lower surface of the top steel plate, and by welding the upper and lower steel plates together to form a single unit, the oil guide grooves of each layer combine to form a multi-layered oil channel, providing power to the hydraulic cylinder of the hydraulic clamp. Compared with existing methods for processing the hydraulic clamp's base plate oil circuit, opening oil guide grooves is less difficult than drilling, and the requirements for the steel quality of the steel plate are not high; ordinary steel can be used. Furthermore, there is no need to plug the drilled holes later, eliminating concerns about oil leakage due to plugging. Since the oil circuit is processed on a plane, it can be processed into curved shapes as required, and its shape can be flexibly designed according to flow requirements. The cross-section of the oil channel can also be designed into different shapes according to flow requirements. Through these improvements, it combines the advantages of long service life, low manufacturing cost, stable oil supply to the hydraulic clamp, and stable clamping performance.

[0020] Furthermore, before the upper and lower steel plates are welded together, the first and second positioning pins made of ice material are used for positioning, so that the alignment of each oil guide groove is more accurate and the inner wall of the oil passage is smoother. Attached Figure Description

[0021] Figure 1 This is an exploded structural diagram of the bottom steel plate, middle steel plate and top steel plate of the hydraulic circuit structure of a hydraulic clamp according to a specific embodiment of the present invention.

[0022] Figure 2 This is an exploded structural diagram of the bottom steel plate, middle steel plate and top steel plate of the hydraulic circuit structure of a hydraulic clamp according to a specific embodiment of the present invention.

[0023] Label Explanation:

[0024] 1. Bottom steel plate; 11. First oil guide groove; 12. First through hole; 2. Middle steel plate; 21. Second oil guide groove; 22. Third oil guide groove; 23. Second through hole; 3. Top steel plate; 31. Fourth oil guide groove; 32. Third through hole; 4. Oil outlet port. Detailed Implementation

[0025] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0026] Embodiment 1 of the present invention is as follows:

[0027] A method for machining the oil circuit of a stable oil supply hydraulic clamp base plate, characterized by comprising the following steps:

[0028] Step 1: Prepare the bottom steel plate, middle steel plate and top steel plate, and drill the required mounting holes for the hydraulic clamp in the bottom steel plate, middle steel plate and top steel plate respectively;

[0029] Step 2: A first oil guide groove is opened on the upper surface of the bottom steel plate, a second oil guide groove that is a mirror image of the first oil guide groove is opened on the lower surface of the middle steel plate, a third oil guide groove is opened on the upper surface of the middle steel plate, and a fourth oil guide groove that is a mirror image of the third oil guide groove is opened on the lower surface of the top steel plate.

[0030] Step 3: Fabricate multiple first positioning pins and multiple second positioning pins. The side of the first positioning pin matches a section of the first oil guide groove, the side of the first positioning pin matches a corresponding section of the second oil guide groove, the side of the second positioning pin matches a section of the third oil guide groove, and the side of the second positioning pin matches a corresponding section of the fourth oil guide groove. Stack the bottom steel plate, middle steel plate, and top steel plate sequentially from bottom to top, positioning them using the first and second positioning pins. After stacking, detach the first positioning pins from the bottom and middle steel plates, and the second positioning pins from the middle and top steel plates. Weld the bottom, middle, and top steel plates together to form a single unit, combining the first and second oil guide grooves to form the first oil channel, and combining the third and fourth oil guide grooves to form the second oil channel. The first and second oil channels constitute the bottom plate oil path. The first and second positioning pins are both made of ice. Specifically, by designing a mold with the required shape for the first and second positioning pins, water can be poured into the mold, cooled and frozen, and then demolded. This mold serves as a temporary positioning mold for aligning the bottom, middle, and top steel plates. Once aligned, the first and second positioning pins do not need to be removed, as they will automatically dissolve into water.

[0031] In the above method, oil guide grooves are respectively opened on the upper surface of the bottom steel plate, the upper and lower surfaces of the middle steel plate, and the lower surface of the top steel plate. The upper and lower steel plates are welded together to form a single unit, so that the oil guide grooves of each layer combine to form a multi-layer oil channel, which provides power to the hydraulic cylinder of the hydraulic clamp. With the improvement of the above method, compared with the existing method of processing the oil circuit of the hydraulic clamp base plate with stable oil supply, the processing difficulty of opening oil guide grooves is less than that of drilling, and the requirements for the quality of steel plates are not high. Ordinary steel can be used, and there is no need to plug the drilled parts later, so there is no need to worry about oil leakage due to plugging. Since the oil circuit is processed on a plane, the oil circuit can be processed into a curved shape as required, and its shape can be flexibly designed according to the flow rate requirements. The cross-section of the oil channel can also be designed into different shapes according to the flow rate requirements. Through the above improvements, it has the advantages of long service life, low manufacturing cost, stable oil supply of hydraulic clamp, and stable clamping performance.

[0032] Before the upper and lower steel plates are welded together, the first and second positioning pins made of ice material are used for positioning, so that the oil guide grooves are more accurately aligned and the inner wall of the oil passage is smoother.

[0033] Please refer to Figure 1 as well as Figure 2 Embodiment two of the present invention is as follows:

[0034] A hydraulic clamp's base plate oil passage structure includes a bottom steel plate 1, a middle steel plate 2, and a top steel plate 3, which are sequentially diffused and welded together. The upper surface of the bottom steel plate 1 has a first oil guide groove 11. The lower surface of the middle steel plate 2, located above the bottom steel plate 1, has a second oil guide groove 21 that is a mirror image of the first oil guide groove 11. The upper surface of the middle steel plate 2 has a third oil guide groove 22. The lower surface of the top steel plate 3 has a fourth oil guide groove 31 that is a mirror image of the third oil guide groove 22. The first oil guide groove 11 and the second oil guide groove 21 combine to form a first oil passage. The third oil guide groove 22 and the fourth oil guide groove 31 combine to form a second oil passage. The bottom steel plate 1 has multiple first through holes 12 for mounting hydraulic cylinders. The middle steel plate 2 has second through holes 23 corresponding to the first through holes 12. The top steel plate 3 has third through holes 32 corresponding to the second through holes 23. The first oil guide groove 11 has an oil outlet port 4 for each first through hole 12. The second oil guide groove 21 has an oil outlet port 4 for each second through hole 23. The third oil guide groove 22 has an oil outlet port 4 for each second through hole 23. The fourth oil guide groove 31 has an oil outlet port 4 for each third through hole 32. The thickness of the bottom steel plate 1 is 10mm. The thickness of the middle steel plate 2 is 10mm. The thickness of the top steel plate 3 is 10mm. The cross-sectional area of ​​the first oil passage is cylindrical. The cross-sectional area of ​​the second oil passage is cylindrical.

[0035] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An oil supply stable oil pressure clamp base plate oil passage processing method characterized by, Includes the following steps: Step 1: Prepare the bottom steel plate, middle steel plate and top steel plate, and drill the required mounting holes for the hydraulic clamp in the bottom steel plate, middle steel plate and top steel plate respectively; Step 2: A first oil guide groove is opened on the upper surface of the bottom steel plate, a second oil guide groove that is a mirror image of the first oil guide groove is opened on the lower surface of the middle steel plate, a third oil guide groove is opened on the upper surface of the middle steel plate, and a fourth oil guide groove that is a mirror image of the third oil guide groove is opened on the lower surface of the top steel plate. Step 3: Fabricate multiple first positioning pins and multiple second positioning pins, both made of ice. The side of the first positioning pin matches a section of the first oil guide groove, the side of the first positioning pin matches a corresponding section of the second oil guide groove, the side of the second positioning pin matches a section of the third oil guide groove, and the side of the second positioning pin matches a corresponding section of the fourth oil guide groove. Stack the bottom, middle, and top steel plates sequentially from bottom to top, using the first and second positioning pins for positioning during the stacking process. After stacking, the first and second positioning pins do not need to be removed; they will automatically dissolve into water. Weld the bottom, middle, and top steel plates together to form a single unit, combining the first and second oil guide grooves to form the first oil channel, and combining the third and fourth oil guide grooves to form the second oil channel. The first and second oil channels constitute the bottom plate oil path. The bottom plate oil path is a curved line. The thickness of the bottom steel plate is 10mm; the thickness of the middle steel plate is 10mm; and the thickness of the top steel plate is 10mm.

2. The oil supply stabilized oil pressure clamp bed plate oil passage processing method according to claim 1, characterized by, The cross-sectional area of ​​the first oil passage is cylindrical, semi-circular, square, or trapezoidal.

3. The oil supply stabilized oil pressure clamp bed plate oil passage processing method according to claim 1, characterized by, The cross-sectional area of ​​the second oil passage is cylindrical, semi-circular, square, or trapezoidal.

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