Buffer cylinder and machine tool

Abstract

The utility model provides a cushion cylinder and a machine tool, relates to machining equipment technical field, cushion cylinder includes cylinder head, flange and plunger, the circumferential side surface of plunger end portion is provided with annular groove, the distance between the side wall of annular groove far away plunger end face and plunger end face is first distance, flange has annular structure, and the flange has annular structure. The inner edge of the flange plate is embedded in the annular groove, the plunger is inserted into the notch of the cylinder head, and the flange plate is connected with the cylinder head. The annular groove is formed in the peripheral side of the end of the plunger, the annular flange plate is embedded in the annular groove, the plunger is inserted into the notch of the cylinder head, at the moment, the flange plate is connected with the cylinder head, the flange plate limits movement of the plunger in the radial direction of the plunger with the cylinder head as the reference, and at the moment, the length of a force arm for applying pressure to the plunger by the flange plate is L3, compared with the prior art, the length L1 is shortened, under the same stress, the bending moment is reduced, the plunger is not prone to damage, and the service life of the cushion cylinder is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing equipment technology, and more specifically, to a buffer cylinder and a machine tool. Background Technology

[0002] Buffer cylinders are used in machine tools. The plunger of the buffer cylinder extends and retracts with the machine tool during operation, bearing the pressure generated during machine tool operation and playing a buffering role, making the machine tool run more smoothly. Due to high frequency of use, large load, and high local temperature, the plunger end of the buffer cylinder is subjected to uneven force and long-term fatigue, making the end prone to breakage and affecting the service life of the buffer cylinder. Utility Model Content

[0003] The problem this invention aims to solve is how to improve the service life of the buffer cylinder.

[0004] To address this, the present invention provides a buffer cylinder, comprising a cylinder head, a flange, and a plunger. An annular groove is formed on the peripheral surface of the plunger end. The distance between the side wall of the annular groove away from the plunger end face and the plunger end face is a first distance. The flange has an annular structure, and the inner edge of the flange is embedded in the annular groove. The plunger is inserted into the slot of the cylinder head, and the flange is connected to the cylinder head.

[0005] Optionally, the buffer cylinder further includes an extension pad connected between the end face of the plunger and the bottom of the groove.

[0006] Optionally, the extended pad has a cover-shaped structure, the internal shape of the extended pad matches the end shape of the plunger, and the external structure of the extended pad matches the shape of the bottom of the slot.

[0007] Optionally, the flange includes two semi-circular flanges, which together form the flange.

[0008] Optionally, the inner edge of the semi-circular flange is chamfered.

[0009] Optionally, a circular groove is provided on the side of the cylinder head facing the plunger, and the flange is embedded in the circular groove.

[0010] Optionally, the buffer cylinder further includes a threaded connector, wherein the bottom of the circular groove is provided with a threaded hole, and the flange is provided with a through hole. The threaded connector passes through the through hole and the threaded hole in sequence to connect the flange to the cylinder head.

[0011] Optionally, there are multiple through holes, threaded holes, and threaded connectors. The multiple through holes are evenly distributed on the flange around the central axis of the flange, and the threaded holes are evenly distributed on the bottom of the circular groove around the central axis of the circular groove. The multiple threaded connectors pass through the multiple through holes and the multiple threaded holes in sequence to connect the flange to the cylinder head.

[0012] Optionally, the edge of the plunger end is chamfered.

[0013] Compared with the prior art, the beneficial effects of the buffer cylinder of this utility model are:

[0014] This invention features an annular groove on the circumference of the plunger's end, within which an annular flange is embedded. The plunger is inserted into the slot of the cylinder head, where the flange is also connected. Using the cylinder head as a reference, the flange restricts the plunger's movement radially. Since the distance between the annular groove's side wall away from the cylinder head and the plunger's end face is the first distance, L2, the lever arm length of the pressure applied by the flange to the plunger is L3. Compared to existing technologies, this shortens the length L1 (which can be 100 mm). Under the same force, the bending moment is reduced, the plunger is less prone to damage, and the service life of the buffer cylinder is improved.

[0015] In addition, in order to solve the above problems, the present invention also provides a machine tool, including the buffer cylinder described in any of the above claims.

[0016] Compared with the prior art, the beneficial effects of the machine tool described in this utility model are roughly the same as those of the buffer cylinder mentioned above, and will not be repeated here. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a buffer cylinder in the prior art;

[0018] Figure 2 This is one of the structural schematic diagrams of the buffer cylinder according to an embodiment of the present utility model;

[0019] Figure 3 This is a second schematic diagram of the structure of the buffer cylinder according to an embodiment of the present utility model;

[0020] Figure 4 This is one of the structural schematic diagrams of the flange according to an embodiment of the present utility model;

[0021] Figure 5 This is a second schematic diagram of the flange structure according to an embodiment of the present utility model;

[0022] Figure 6 This is a schematic diagram of the cylinder head structure according to an embodiment of the present utility model;

[0023] Figure 7This is a schematic diagram of the plunger structure according to an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1-Cylinder head; 11-Groove; 2-Flange; 3-Plunger; 31-Annular groove; 4-Extended gasket; 5-Through hole; 1'-Existing cylinder head; 3'-Existing plunger; 6'-Snap ring; 7'-Flange sleeve. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] It should be noted that in the description of this utility model, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "top", "bottom", "front", "back", "inner" and "outer" is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this utility model, and is not intended to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the scope of protection of this utility model.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0029] Furthermore, although specific embodiments have been described herein with reference to them, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that different dependent claims and features herein can be combined in ways not used as described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other embodiments.

[0030] like Figure 1As shown, when the existing plunger 3' and the existing cylinder head 1' are connected in the existing buffer cylinder, a groove structure is opened at the end of the existing plunger 3'. The groove structure is annular, and a retaining ring 6' is set in the groove structure. A flange sleeve 7' is set on the side of the groove structure away from the existing cylinder head 1'. The flange sleeve 7' is fitted on the periphery of the plunger 3'. The width of the flange sleeve 7' is L1, for example, 100 mm. The distance from the right side of the flange sleeve 7' to the end face of the existing plunger 3' is a first distance L2, for example, 200 mm. At this time, the lever arm length of the retaining ring 6' applying force to the existing plunger 3' is L1 + L3, where L3 is the length of the flange sleeve 7' from the connection point between the existing plunger 3' and the cylinder body. During operation, the groove structure of the existing plunger 3' is prone to breakage due to long-term force from the retaining ring 6', affecting the use of the existing plunger 3' and thus affecting the service life of the buffer cylinder.

[0031] To solve the above problems, such as Figure 2 , Figure 6 and Figure 7 As shown, this utility model provides a buffer cylinder, including a cylinder head 1, a flange 2, and a plunger 3. An annular groove 31 is formed on the peripheral surface of the end of the plunger 3. The distance between the side wall of the annular groove 31 away from the end face of the plunger 3 and the end face of the plunger 3 is a first distance. The flange 2 has an annular structure, and the inner edge of the flange 2 is embedded in the annular groove 31. The plunger 3 is inserted into the slot 11 of the cylinder head 1, and the flange 2 is connected to the cylinder head 1.

[0032] In this embodiment, an annular groove 31 is formed on the circumference of the end of the plunger 3, and an annular flange 2 is embedded in the annular groove 31. The plunger 3 is inserted into the slot 11 of the cylinder head 1. At this time, the flange 2 is also connected to the cylinder head 1. The flange 2 restricts the movement of the plunger 3 in the radial direction with the cylinder head 1 as a reference. Since the distance between the side wall of the annular groove 31 away from the cylinder head 1 and the end face of the plunger 3 is the first distance, namely L2, the lever arm length of the flange 2 applying pressure to the plunger 3 is L3. Compared with the prior art, the length L1 is shortened. L1 can be 100 mm. Under the same force, the bending moment is reduced, the plunger 3 is not easily damaged, and the service life of the buffer cylinder is improved.

[0033] Optionally, such as Figure 3 As shown, the buffer cylinder also includes an extension pad 4, which is connected between the end face of the plunger 3 and the bottom of the groove 11.

[0034] In this embodiment, after the original plunger 3 breaks, the remaining part can be processed into a new plunger 3. However, the length of the new plunger 3 is shorter than that of the original plunger 3. By setting an extension pad 4, which is placed between the end face of the new plunger 3 and the bottom of the groove 11 of the cylinder head 1, the combination of the extension pad 4 and the new plunger 3 has the same axial dimension as the original plunger 3. This facilitates the limiting of the new plunger 3 in the axial direction, making the connection between the plunger 3 and the cylinder head 1 more stable.

[0035] Specifically, when the extension pad 4 is added, the distance between the right side wall of the annular groove 31 opened on the plunger 3 and the left end face of the extension pad 4 is the first distance L2.

[0036] Optionally, such as Figure 3 As shown, the extended pad 4 has a cover-shaped structure. The internal shape of the extended pad 4 matches the end shape of the plunger 3, and the external structure of the extended pad 4 matches the shape of the bottom of the slot 11.

[0037] In this embodiment, by setting the extended pad 4 as a cover-shaped structure, the internal shape of the cover-shaped structure is the same as the end shape of the plunger 3, for example, both are stepped cylindrical structures with the same size. The external shape of the cover-shaped structure is the same as the bottom shape of the slot 11, for example, both are cylindrical structures with the same size. This allows the end of the plunger 3 to be precisely embedded in the extended pad 4, and the extended pad 4 to be precisely embedded in the slot 11. The extended pad 4 limits the plunger 3 in the axial direction, making the connection between the plunger 3 and the cylinder head 1 more stable.

[0038] Optionally, the flange 2 includes two semi-circular flanges, which together form the flange 2.

[0039] In this embodiment, by setting two semi-circular flanges, both of which have an arc of 180 degrees, the two flanges can be joined together to form a flange plate 2. When the flange plate 2 is installed on the annular groove 31 of the plunger 3, the two flanges can be inserted into the annular groove 31 from both sides of the annular groove 31 respectively, and joined together to form the flange plate 2, thus completing the connection between the flange plate 2 and the plunger 3.

[0040] Optionally, the inner edge of the semi-circular flange is chamfered.

[0041] In this embodiment, as Figure 5 As shown, by setting a chamfer at the inner edge of the semi-circular flange, the chamfer acts as a guide when the flange is disassembled into the annular groove 31, making it easier for the flange to be inserted into the annular groove 31.

[0042] Optionally, such as Figure 5 As shown, a circular groove is provided on the side of the cylinder head 1 facing the plunger 3, and the flange 2 is embedded in the circular groove.

[0043] In this embodiment, a circular groove is formed on the side surface of the cylinder head 1 facing the plunger 3. The size of the circular groove is the same as that of the flange 2. The circular groove is coaxially arranged with the slot 11. When the plunger 3 is inserted into the slot 11, the flange 2 is embedded in the annular groove 31. One end face of the flange 2 abuts against the bottom of the circular groove, and the other end face is coplanar with the surface of the cylinder head 1 facing the plunger 3. The cylinder head 1 can provide support for the flange 2 in the radial direction of the plunger 3, making the connection between the plunger 3, the flange 2 and the cylinder head 1 more stable.

[0044] Optionally, such as Figure 3 and Figure 4 As shown, the buffer cylinder also includes a threaded connector. The bottom of the circular groove is provided with a threaded hole, and the flange 2 is provided with a through hole 5. The threaded connector passes through the through hole 5 and the threaded hole in sequence to connect the flange 2 with the cylinder head 1.

[0045] In this embodiment, a threaded hole is opened at the bottom of the circular groove, and a through hole 5 is opened on the flange 2. When the flange 2 is embedded in the circular groove, the through hole 5 communicates with the threaded hole. A threaded connector is provided, and the threaded end of the threaded connector passes through the through hole 5 and the threaded hole in sequence and is threadedly connected to the threaded hole. The nut of the threaded connector is pressed on the flange 2, and the flange 2 is connected to the cylinder head 1, making the connection between the cylinder head 1 and the flange 2 more stable, thereby making the connection between the plunger 3 and the cylinder head 1 more stable.

[0046] Optionally, such as Figure 4 As shown, there are multiple through holes 5, multiple threaded holes and multiple threaded connectors. The multiple through holes 5 are evenly distributed on the flange 2 around the central axis of the flange 2. The threaded holes are evenly distributed on the bottom of the circular groove around the central axis of the circular groove. The multiple threaded connectors pass through the multiple through holes 5 and the multiple threaded holes in sequence to connect the flange 2 with the cylinder head 1.

[0047] In this embodiment, multiple through holes 5, threaded holes, and threaded connectors are provided, and the number of each type is the same. The multiple through holes 5 are evenly distributed around the central axis of the flange 2, and the multiple threaded holes are evenly distributed around the central axis of the circular groove. When the flange 2 is embedded in the circular groove, the through holes 5 and the threaded holes correspond one-to-one. The multiple threaded connectors are passed through the multiple through holes 5 and the multiple threaded holes in sequence to connect the flange 2 to the cylinder head 1, so that the flange 2 is subjected to more uniform force and the connection between the flange 2 and the cylinder head 1 is more stable.

[0048] Optionally, the edge of the end of the plunger 3 is chamfered.

[0049] In this embodiment, by setting a chamfer at the edge of the plunger 3 end, the chamfer plays a guiding role when the plunger 3 is inserted into the slot 11, making it easier for the plunger 3 to be inserted into the slot 11.

[0050] Another embodiment of this utility model provides a machine tool, including the buffer cylinder described above.

[0051] Compared with the prior art, the beneficial effects of the machine tool in this embodiment are roughly the same as those of the buffer cylinder described above, and will not be repeated here.

[0052] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A buffer cylinder, characterized in that, The device includes a cylinder head (1), a flange (2), and a plunger (3). An annular groove (31) is formed on the circumferential surface of the plunger (3). The distance between the side wall of the annular groove (31) away from the end face of the plunger (3) and the end face of the plunger (3) is a first distance. The flange (2) has an annular structure. The inner edge of the flange (2) is embedded in the annular groove (31). The plunger (3) is inserted into the slot (11) of the cylinder head (1). The flange (2) is connected to the cylinder head (1).

2. The buffer cylinder according to claim 1, characterized in that, It also includes an extension pad (4) that is connected between the end face of the plunger (3) and the bottom of the groove (11).

3. The buffer cylinder according to claim 2, characterized in that, The extended pad (4) has a cover-shaped structure. The internal shape of the extended pad (4) matches the end shape of the plunger (3), and the external structure of the extended pad (4) matches the shape of the bottom of the slot (11).

4. The buffer cylinder according to claim 1, characterized in that, The flange (2) includes two semi-circular flanges, which together form the flange (2).

5. The buffer cylinder according to claim 4, characterized in that, The inner edge of the semi-circular flange is chamfered.

6. The buffer cylinder according to claim 1, characterized in that, The cylinder head (1) has a circular groove on the side facing the plunger (3), and the flange (2) is embedded in the circular groove.

7. The buffer cylinder according to claim 6, characterized in that, It also includes a threaded connector, the bottom of the circular groove is provided with a threaded hole, the flange (2) is provided with a through hole (5), and the threaded connector passes through the through hole (5) and the threaded hole in sequence to connect the flange (2) with the cylinder head (1).

8. The buffer cylinder according to claim 7, characterized in that, There are multiple through holes (5), multiple threaded holes and multiple threaded connectors. The multiple through holes (5) are evenly distributed on the flange (2) around the central axis of the flange (2). The threaded holes are evenly distributed on the bottom of the circular groove around the central axis of the circular groove. The multiple threaded connectors pass through the multiple through holes (5) and the multiple threaded holes in sequence to connect the flange (2) with the cylinder head (1).

9. The buffer cylinder according to claim 1, characterized in that, The plunger (3) has a chamfer at the edge of its end.

10. A machine tool, characterized in that, Includes the buffer cylinder as described in any one of claims 1 to 9.

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