Same-proportion hydraulic output structure

Abstract

The utility model belongs to the technical field of unclamping pressure cylinder detection, and particularly relates to a same-proportion hydraulic output structure, which comprises a threaded rod fixing sleeve, a threaded rod cylinder body, a hydraulic output shaft, a hydraulic output shaft, a hydraulic output shaft, a hydraulic output shaft, a hydraulic output shaft, a hydraulic output shaft, a hydraulic output shaft and a hydraulic output shaft. The threaded rod fixing sleeve is provided with a cavity; the threaded rod cylinder body is fixed in the cavity of the threaded rod fixing sleeve and is provided with an oil cavity; the piston rod body is partially embedded into the oil cavity, an oil inlet channel is formed in the piston rod body, and an oil inlet communicated with the oil inlet channel is formed in the outer wall of the piston rod body; the PT tooth double-end connector is fixed in the oil inlet, and the PT tooth double-end connector is fixed in the oil outlet; according to the utility model, the design of the hydraulic output cylinders with the same proportion is adopted, and the hydraulic pressure gauge is matched for use, so that the detection of output data can be completed on the premise of not changing the appearance of the unclamping pressure cylinder product, the detection is more convenient and faster, and the consistency of the detection data can be effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of detection technology for knife-pressurizing cylinders, specifically relating to a proportional hydraulic output structure. Background Technology

[0002] Tool change cylinders are mainly used for tool change in the automatic or semi-automatic tool changing mechanism of machining centers and CNC milling machines. Tool change cylinders utilize a small air pressure to increase the pressure of hydraulic pressure, so that CNC machine tools can use air pressure at the lowest cost to replace the current complex hydraulic devices such as hydraulic pumps, achieving the effect of easy tool changing. They can also be used as clamping devices for fixtures and other mechanisms.

[0003] The cutting cylinder commonly used in the market today is a force-increasing gas-liquid conversion device. Compressed air acts on the cylinder piston to generate thrust, which pushes the oil cylinder piston, causing the oil pressure, which is several times higher than the compressed air, to act on the pressure rod, generating thrust and realizing the action of the mechanical device.

[0004] Currently, devices such as oil gauges or force gauges are commonly used to display the output data of the cutting tool booster cylinder. During the testing process, the data changes after the cutting tool booster cylinder outputs can be directly observed through oil gauges or force gauges.

[0005] A search of existing technology revealed a Chinese utility model patent with authorization announcement number CN207703377U, which discloses "a device for detecting the broaching force of a machine tool spindle." The device includes: a force gauge for detecting the broaching force of a machine tool spindle, a first support and a second support for fixing the machine tool spindle, a measuring table, a tool-removing cylinder, and a tool-removing cylinder mounting base. The tool-removing cylinder is fixed on the tool-removing cylinder mounting base. The first support, the second support, and the tool-removing cylinder mounting base are all fixed on the measuring table. The device has a simple structure, is reliable and durable, has high repeatability, and strong environmental adaptability. It can realize the detection and control of the broaching force of the spindle, meeting the detection needs of mass production sites.

[0006] While existing testing devices, including those mentioned above, can meet general testing requirements, they require reassembly and alteration of the machine tool spindle and tool-pressurizing cylinder structure during actual use, which is quite troublesome.

[0007] To address the aforementioned issues, this application proposes a proportional hydraulic output structure. Utility Model Content

[0008] To address the aforementioned problems in the existing technology, this utility model provides a proportional hydraulic output structure, which is convenient to use and easy to operate.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a proportional hydraulic output structure, comprising:

[0010] Tooth bar retaining sleeve, wherein the tooth bar retaining sleeve has a cavity:

[0011] A toothed rod cylinder body, wherein the toothed rod cylinder body is fixed within the cavity of the toothed rod fixing sleeve, and the toothed rod cylinder body has an oil cavity;

[0012] A piston rod body, wherein the piston rod body is partially embedded in the oil chamber, and the piston rod body has an oil inlet channel, and the outer wall of the piston rod body has an oil inlet port communicating with the oil inlet channel;

[0013] A PT threaded double-ended connector is fixed inside the oil inlet.

[0014] As a preferred technical solution of this utility model, it also includes:

[0015] A toothed rod fixing nut is fixed to the toothed rod cylinder body by thread engagement;

[0016] The toothed rod cylinder body is fixed to the toothed rod fixing sleeve by fixing screws.

[0017] As a preferred technical solution of this utility model, it also includes:

[0018] An adjusting nut is fixed to the fixing screw by means of threaded engagement.

[0019] As a preferred technical solution of this utility model, it also includes:

[0020] A spring washer is fitted onto the fixing screw.

[0021] As a preferred embodiment of this utility model, it further includes a sealing mechanism, wherein a sealing groove is provided on the inner wall of the toothed rod cylinder, the sealing mechanism is located within the sealing groove, and the sealing mechanism includes:

[0022] A U-shaped sealing ring is located within the sealing groove;

[0023] A support ring is located on the back of the U-shaped sealing ring and is used to support the U-shaped sealing ring. The outer circular surface of the support ring is a semi-circular surface.

[0024] As a preferred technical solution of this utility model, it also includes:

[0025] A limiting protrusion ring is fixed to the end face of the support ring, and the limiting protrusion ring has an umbrella-shaped structure. The U-shaped sealing ring has a limiting groove for the limiting protrusion ring to be inserted.

[0026] As a preferred embodiment of this utility model, the sealing mechanism further includes:

[0027] A solid grease is located on the back of the support ring.

[0028] As a preferred technical solution of this utility model, it also includes:

[0029] The nut screw has an expansion port on the piston rod body that communicates with the oil inlet channel, and the nut screw is fixed in the expansion port by thread engagement.

[0030] A steel ball, located between the inner wall of the expansion port and the nut screw.

[0031] Compared with the prior art, the beneficial effects of this utility model are:

[0032] In this invention, a proportional hydraulic output cylinder design is adopted, which is used in conjunction with an oil pressure gauge. The output data can be detected without changing the appearance of the blade booster cylinder, making the detection more convenient and faster, and effectively improving the consistency of the detection data.

[0033] Other additional advantages and benefits of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0034] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0035] Figure 1 This is a schematic diagram of the structure of this utility model;

[0036] Figure 2 This is a cross-sectional structural diagram of the sealing mechanism in this utility model;

[0037] Figure 3 This utility model Figure 2 A magnified structural diagram at point A in the diagram.

[0038] In the diagram: 1. Rod retaining sleeve; 2. Rod cylinder body; 21. Oil chamber; 22. Sealing groove; 3. Piston rod body; 31. Oil inlet channel; 32. Oil inlet; 33. Expansion port; 4. PT threaded double-ended connector; 5. Sealing mechanism; 51. U-shaped sealing ring; 511. Limiting groove; 52. Support ring; 521. Semi-circular surface; 522. Limiting convex ring; 53. Solid grease; 6. Fixing screw; 7. Adjusting nut; 8. Rod retaining nut; 9. Spring washer; 10. Measuring screw; 11. Steel ball. Detailed Implementation

[0039] 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.

[0040] Please see Figures 1-3 The present invention provides the following technical solution: a proportional hydraulic output structure, including: a tooth rod fixing sleeve 1, a tooth rod cylinder 2, a piston rod 3, and a PT tooth double-ended connector 4.

[0041] Furthermore, by Figure 1 As shown, in this embodiment, the toothed rod fixing sleeve 1 has a cavity, the toothed rod cylinder 2 is fixed in the cavity of the toothed rod fixing sleeve 1, and the toothed rod cylinder 2 has an oil cavity 21. The piston rod 3 is partially embedded in the oil cavity 21, and there is an oil inlet channel 31 in the piston rod 3. There is an oil inlet 32 ​​on the outer wall of the piston rod 3 that communicates with the oil inlet channel 31. The PT toothed double-ended connector 4 is fixed in the oil inlet 32. After adopting the above scheme, in use, the PT toothed double-ended connector 4 is connected to the same pump station of the pressure booster cylinder of the knife under test through a hydraulic oil pipe, and oil is installed at the same time. During testing, hydraulic oil enters the inlet channel 31 through the PT threaded double-ended connector 4 and then enters the oil chamber 21, causing the piston rod 3 to generate thrust. By observing the change in the data on the hydraulic pressure gauge after the piston rod 3 exerts force, the output data of the knife-cutting booster cylinder can be detected. This utility model adopts a proportional hydraulic output cylinder design, which is used in conjunction with the hydraulic pressure gauge. The output data can be detected without changing the product shape of the knife-cutting booster cylinder, making the detection more convenient and faster, and effectively improving the consistency of the detection data.

[0042] Optionally, by Figure 1 As shown, this embodiment also includes: a toothed rod fixing nut 8 and a fixing screw 6. The toothed rod fixing nut 8 is fixed to the toothed rod cylinder 2 by thread engagement. The toothed rod cylinder 2 is fixed to the toothed rod fixing sleeve 1 by the fixing screw 6. With the above solution, during use, the toothed rod fixing nut 8 limits the position from the top, and the fixing screw 6 locks the position from the bottom, so as to achieve stable installation of the toothed rod cylinder 2.

[0043] Preferably, by Figure 1 As shown, this embodiment also includes: an adjusting nut 7, which is fixed to the fixing screw 6 by a threaded engagement. After adopting the above scheme, rotating the adjusting nut 7 adjusts the height of the adjusting nut 7 by the threaded engagement, and rotating the toothed rod fixing nut 8 adjusts the height of the toothed rod fixing nut 8 by the threaded engagement, thereby adjusting the initial height of the toothed rod cylinder 2.

[0044] Preferably, by Figure 1 As shown, in this embodiment, it also includes a spring washer 9, which is sleeved on the fixing screw 6. After tightening the adjusting nut 7, the spring washer 9 is compressed, which increases the thread engagement force between the fixing screw 6 and the toothed cylinder 2, and further improves the stability of the toothed cylinder 2 installation.

[0045] Preferably, by Figures 1-3 As shown, this embodiment also includes a sealing mechanism 5. A sealing groove 22 is provided on the inner wall of the toothed rod cylinder 2. The sealing mechanism 5 is located in the sealing groove 22 and includes a U-shaped sealing ring 51 and a support ring 52. The U-shaped sealing ring 51 is located in the sealing groove 22, and the support ring 52 is located on the back of the U-shaped sealing ring 51 to support the U-shaped sealing ring 51. The outer circular surface of the support ring 52 is a semi-circular surface 521. With the above solution, the support ring 52 supports the U-shaped sealing ring 51 to ensure the stability of the U-shaped sealing ring 51. The U-shaped sealing ring 51 fits tightly against the piston rod 3, which improves the sealing performance of the connection between the piston rod 3 and the toothed rod cylinder 2, avoids oil leakage accidents, and ensures the accuracy of the detection.

[0046] Preferably, by Figures 1-3 As shown, this embodiment also includes a limiting protrusion ring 522, which is fixed to the end face of the support ring 52. The limiting protrusion ring 522 has an umbrella-shaped structure and a limiting groove 511 for the limiting protrusion ring 522 to be inserted into the U-shaped sealing ring 51. After adopting the above solution, the limiting protrusion ring 522 is inserted into the limiting groove 511, which ensures the stability of the connection between the U-shaped sealing ring 51 and the support ring 52 and improves the stability of the U-shaped sealing ring 51.

[0047] Preferably, by Figures 1-3 As shown, in this embodiment, the sealing mechanism 5 further includes a solid grease 53, which is located on the back of the support ring 52. The solid grease 53 reduces the sliding friction between the piston rod 3 and the toothed cylinder 2, which helps to further improve the accuracy of the test results.

[0048] Preferably, by Figure 1As shown, this embodiment also includes a grommet screw 10 and a steel ball 11. The piston rod body 3 has an expansion port 33 communicating with the oil inlet channel 31. The grommet screw 10 is fixed in the expansion port 33 by threaded engagement. The steel ball 11 is located between the inner wall of the expansion port 33 and the grommet screw 10. Under normal circumstances, the grommet screw 10 is fixed in the expansion port 33 by threaded engagement. At this time, the steel ball 11 abuts against the node position between the expansion port 33 and the oil inlet channel 31 to block the node and achieve sealing. If necessary, the grommet screw 10 can be unscrewed and the steel ball 11 can be removed. Other accessories that can be used in the testing process can be connected using the expansion port 33 to meet different testing needs.

[0049] Components not described in detail in this article are existing technologies.

[0050] The working principle and usage process of this utility model: The proportional hydraulic output structure of this utility model is used for the output detection of cylinders such as the knife-beating booster cylinder. When in use, the PT tooth double-ended connector 4 is connected to the same pump station of the knife-beating booster cylinder under test through a hydraulic oil pipe for proportional pumping of hydraulic oil, and an oil pressure gauge is installed at the same time.

[0051] During testing, hydraulic oil enters the oil inlet channel 31 through the PT threaded double-ended connector 4, and then enters the oil chamber 21, causing the piston rod 3 to generate thrust. By observing the change in the oil pressure gauge after the piston rod 3 outputs force, the output data of the knife-cutting booster cylinder can be detected.

[0052] This utility model adopts a proportional hydraulic output cylinder design, which is used in conjunction with an oil pressure gauge. It can complete the detection of output data without changing the product shape of the knife-pressurizing cylinder, making the detection more convenient and faster, and effectively improving the consistency of the detection data.

[0053] It should be noted that, in principle, the PT double-ended connector 4 can also be connected to an air pipe, so it is also applicable to the output test of pneumatic cylinders.

[0054] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A proportional hydraulic output structure, characterized in that, include: Tooth bar fixing sleeve (1), the tooth bar fixing sleeve (1) having a cavity: The toothed rod cylinder body (2) is fixed in the cavity of the toothed rod fixing sleeve (1), and the toothed rod cylinder body (2) has an oil cavity (21); The piston rod (3) is partially embedded in the oil chamber (21) and has an oil inlet channel (31) in the piston rod (3). The outer wall of the piston rod (3) has an oil inlet (32) that communicates with the oil inlet channel (31). PT threaded double-ended connector (4), which is fixed inside the oil inlet (32).

2. The proportional hydraulic output structure according to claim 1, characterized in that: Also includes: The tooth rod fixing nut (8) is fixed to the tooth rod cylinder body (2) by means of thread engagement; The toothed rod cylinder (2) is fixed to the toothed rod fixing sleeve (1) by the fixing screw (6).

3. The proportional hydraulic output structure according to claim 2, characterized in that: Also includes: Adjusting nut (7), which is fixed to the fixing screw (6) by thread engagement.

4. The proportional hydraulic output structure according to claim 2, characterized in that: Also includes: Spring washer (9) is fitted onto the fixing screw (6).

5. The proportional hydraulic output structure according to claim 1, characterized in that: It also includes a sealing mechanism (5), which has a sealing groove (22) on the inner wall of the toothed rod cylinder (2). The sealing mechanism (5) is located in the sealing groove (22), and the sealing mechanism (5) includes: U-shaped sealing ring (51), the U-shaped sealing ring (51) is located in the sealing groove (22); A support ring (52) is located on the back of the U-shaped sealing ring (51) and is used to support the U-shaped sealing ring (51). The outer circular surface of the support ring (52) is a semi-circular surface (521).

6. The proportional hydraulic output structure according to claim 5, characterized in that: Also includes: A limiting protrusion ring (522) is fixed to the end face of the support ring (52), and the limiting protrusion ring (522) has an umbrella-shaped structure. The U-shaped sealing ring (51) has a limiting groove (511) for the limiting protrusion ring (522) to be inserted.

7. The proportional hydraulic output structure according to claim 5, characterized in that: The sealing mechanism (5) further includes: Solid grease (53) is located on the back of the support ring (52).

8. The proportional hydraulic output structure according to claim 1, characterized in that: Also includes: The nut screw (10) has an expansion port (33) on the piston rod body (3) that communicates with the oil inlet channel (31), and the nut screw (10) is fixed in the expansion port (33) by thread engagement; A steel ball (11) is located between the inner wall of the expansion port (33) and the nut screw (10).

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