CN216131176U - Oil drainage-free rotary oil cylinder for vertical addition of fourth shaft - Google Patents
Oil drainage-free rotary oil cylinder for vertical addition of fourth shaft Download PDFInfo
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- CN216131176U CN216131176U CN202121950801.6U CN202121950801U CN216131176U CN 216131176 U CN216131176 U CN 216131176U CN 202121950801 U CN202121950801 U CN 202121950801U CN 216131176 U CN216131176 U CN 216131176U
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- 238000007789 sealing Methods 0.000 claims description 14
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 125000006850 spacer group Chemical group 0.000 claims description 11
- 230000011664 signaling Effects 0.000 claims description 8
- 239000004519 grease Substances 0.000 claims description 7
- 230000001050 lubricating effect Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 81
- 238000003754 machining Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
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Abstract
The utility model discloses an oil-drainage-free rotary oil cylinder for a vertical-addition fourth shaft, which comprises a rotary part and an oil cylinder, wherein the rotary part comprises a pull rod, a plane bearing, a bearing seat and a mounting seat, the bearing seat is arranged in the mounting seat, the plane bearing is arranged in the bearing seat, one end of the pull rod is used for being connected with a chuck, the other end of the pull rod is connected with the plane bearing, the oil cylinder comprises a piston and a cylinder body, one end of the cylinder body is fixedly connected with the mounting seat, one end of the piston is fixedly connected with the bearing seat, a radial convex ring is integrally arranged in the middle of the piston, a first oil cavity and a second oil cavity are arranged in the cylinder body, and a first oil port and a second oil port are formed in the side wall of the cylinder body. The rotary oil cylinder is a rotatable oil cylinder without an oil drainage structure, and is compact in structure and large in tension, a pull rod of the rotary oil cylinder can independently rotate by 0-360 degrees, and the pull rod can synchronously and linearly move along with a piston. The rotary oil cylinder is used for a fourth shaft of a vertical machining center, is arranged in a machine tool protection room, does not need to be perforated in the machine tool protection room, and is safe and reliable to use.
Description
Technical Field
The utility model relates to a rotary oil cylinder, in particular to an oil-drainage-free rotary oil cylinder for a vertical-loading fourth shaft.
Background
The oil cylinder applied to the lathe spindle has two types, namely a rotary oil cylinder and a rotary air cylinder. The volume of the rotary cylinder is larger than that of the rotary cylinder, the reliability of the rotary cylinder is not as good as that of the rotary cylinder, the tension force provided by the rotary cylinder is limited by air pressure, and the tension force is not as large as that of the rotary cylinder, so that the rotary cylinder is more common. The conventional rotary oil cylinder for the lathe spindle comprises an oil inlet, an oil return port and an oil drainage port, and the oil drainage structure is designed, so that a corresponding oil drainage pipe is required to be configured to guide hydraulic oil back to the hydraulic station. The oil drain pipe of the rotary oil cylinder is in a natural sagging state, and the oil drain pipe moves left and right and back and forth along with a workbench of a lathe in the machining process of the lathe. For a common lathe, the main shaft of the common lathe is arranged outside the protective room of the lathe, so the rotary oil cylinder with the oil drainage structure can be suitable for the common lathe. And when vertical machining center optional match fourth shaft revolving stage and install the chuck additional, because the fourth shaft is located inside between the lathe protection, the gyration hydro-cylinder setting of taking the draining structure is when inside between the lathe protection, if realize the normal use of gyration hydro-cylinder and draining and the natural oil return under the action of gravity, need trompil on the lathe protection room, make oil can get back to the hydraulic pressure station from high to low, but the structure of trompil can lead to having the hidden danger of leaking between the lathe protection, in addition, the bleeder line must can scrape the lathe panel beating along with the workstation removes the in-process, the car bits, the possibility of draining the pipe damage.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing the oil drainage-free rotary oil cylinder for the vertical addition fourth shaft, which has the advantages of compact structure, large tension, safe use and reliability, and aims to overcome the defects of the prior art.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a rotary oil cylinder without oil drainage for a vertical shaft comprises a rotary part and an oil cylinder which are coaxially arranged, wherein the rotary part comprises a pull rod, a plane bearing, a bearing seat and a mounting seat, the bearing seat is linearly movably mounted in the mounting seat, the plane bearing is mounted in the bearing seat, one end of the pull rod is used for connecting a chuck mounted on a rotary table of the vertical shaft, the other end of the pull rod extends into the mounting seat and is connected with the plane bearing, the oil cylinder comprises a piston and a cylinder body, one end of the cylinder body is fixedly connected with the mounting seat, the piston is linearly movably mounted in the cylinder body, one end of the piston extends out of the cylinder body and is fixedly connected with the bearing seat, a radial convex ring is integrally arranged in the middle of the piston, and a first oil cavity and a second oil cavity are arranged in the cylinder body, the first oil cavity and the second oil cavity are respectively arranged on two axial sides of the radial convex ring, a first oil port and a second oil port are arranged on the side wall of the cylinder body, the first oil port is communicated with the first oil cavity, and the second oil port is communicated with the second oil cavity.
The rotary oil cylinder is a rotatable oil cylinder without an oil drainage structure, has a compact structure and large tension, and the pull rod of the rotary oil cylinder can independently rotate by 0-360 degrees and can synchronously and linearly move along with the piston. The rotary oil cylinder is used for the fourth shaft of the vertical machining center, is arranged in the machine tool protection room, does not need to be provided with a hole, and is safe and reliable to use.
The working principle of the rotary oil cylinder is as follows: hydraulic oil enters the first oil cavity through the first oil port, the piston is pushed to move to the limit position far away from the mounting seat, the piston is a pulling acting force on the pull rod at the moment, the pull rod pulls the chuck to clamp, so that a workpiece on the chuck is clamped, the vertical machining center can carry out feeding machining on the workpiece, and the pull rod and the bearing seat can synchronously rotate along with the chuck in the machining process; when a workpiece needs to be loosened, oil is returned from the first oil port and is fed into the second oil port, the piston is pushed to move to the limit position close to the mounting seat, the piston is used for pushing the pull rod, the pull rod pushes the chuck to loosen the workpiece, and the workpiece can be subjected to blanking operation by the vertical machining center at the moment.
Preferably, a spacer bush is fixed to the other end of the pull rod, the number of the plane bearings is two, and the two plane bearings are respectively mounted on the spacer bush. The installation of two plane bearings is realized through the spacer bush, and the assembly is convenient. The design of the two plane bearings can improve the reliability of the rotation action of the pull rod.
Preferably, the other end of the pull rod is integrally provided with a radial positioning ring and is in threaded connection with a pressing ring, and the spacer bush is clamped by the radial positioning ring and the pressing ring. The spacer sleeve is fixed through the radial positioning ring and the compression ring, so that the structure is simple and the assembly is convenient.
Preferably, a cylinder cover is installed at the other end of the cylinder body, the other end of the piston extends out of the cylinder cover, a signaling plate is fixed at the other end of the piston, a first signal switch and a second signal switch which are matched with the signaling plate are connected to the cylinder cover, and the first signal switch and the second signal switch are respectively arranged at two limit positions of the piston in linear motion. Under the activation of the signaling board, the first signal switch and the second signal switch feed back the position information of the piston to a machine tool control system, and the robot or the manipulator can be activated to perform corresponding loading and unloading actions. The design of the signaling board, the first signal switch and the second signal switch can realize in-place detection of the piston and meet the requirement of automatic processing.
Preferably, a first U-shaped sealing ring is arranged between one end of the piston and the cylinder body, the first U-shaped sealing ring is fixed on the cylinder body, a rotary pressure seal and an O-shaped sealing ring are arranged between the radial convex ring and the cylinder body, the rotary pressure seal and the O-shaped sealing ring are respectively fixed on the radial convex ring, a second U-shaped sealing ring is arranged between the other end of the piston and the cylinder cover, and the second U-shaped sealing ring is arranged on the cylinder cover. The sealing structures can achieve a good contact sealing effect on the oil cylinder, and oil leakage is prevented.
Preferably, an internal threaded hole is formed in one end of the pull rod, a connecting rod is fixed on the chuck and in threaded connection with the pull rod, an insertion hole is formed in the side wall of the mounting seat, a positioning hole matched with the insertion hole is formed in the pull rod, when the bearing seat drives the pull rod to move to the position where the positioning hole is opposite to the insertion hole, a metal rod is inserted into the insertion hole and the positioning hole, the pull rod is fixed, and at the moment, the connecting rod is in threaded connection with the pull rod. The cooperation of above-mentioned jack and locating hole can play better rotation-proof effect to the pull rod, prevents that connecting rod and pull rod threaded connection in-process from influencing assembly efficiency because of the rotation of pull rod.
Preferably, an oil hole is formed in a side wall of the mounting seat, and the oil hole is used for filling lubricating grease. The grease lubricates the rotation of the revolving portion.
Preferably, the outer peripheral wall of the bearing seat is provided with a plurality of annular oil grooves for storing lubricating grease.
Preferably, the piston is fixedly connected with the bearing seat through a bolt, and the bolt penetrates through the bearing seat and is in threaded connection with the piston.
Compared with the prior art, the utility model has the following advantages: the rotary oil cylinder is a rotatable oil cylinder without an oil drainage structure, has a compact structure and large tension, and the pull rod of the rotary oil cylinder can independently rotate by 0-360 degrees and can synchronously and linearly move along with the piston. The rotary oil cylinder is used for the fourth shaft of the vertical machining center, is arranged in the machine tool protection room, does not need to be provided with a hole, and is safe and reliable to use.
Drawings
FIG. 1 is a schematic sectional view of the rotary cylinder at the left limit position in the embodiment;
FIG. 2 is a schematic sectional view of the rotary cylinder at the right limit position in the embodiment;
FIG. 3 is an appearance effect diagram of the rotary cylinder after installation in the embodiment;
FIG. 4 is a schematic sectional view of the rotary cylinder in the embodiment after installation.
Detailed Description
The utility model is described in further detail below with reference to the accompanying examples.
The oil-leakage-free rotary oil cylinder for the vertical shaft comprises a rotary part and an oil cylinder which are coaxially arranged, wherein the rotary part comprises a pull rod 1, a plane bearing 2, a bearing seat 31 and a mounting seat 32, the bearing seat 31 is linearly movably mounted in the mounting seat 32, the plane bearing 2 is mounted in the bearing seat 31, one end of the pull rod 1 is used for being connected with a chuck 71 mounted on a vertical shaft rotating platform 7, the other end of the pull rod 1 extends into the mounting seat 32 and is connected with the plane bearing 2, the oil cylinder comprises a piston 41 and a cylinder body 42, one end of the cylinder body 42 is fixedly connected with the mounting seat 32, the piston 41 is linearly movably mounted in the cylinder body 42, one end of the piston 41 extends out of the cylinder body 42 and is fixedly connected with the bearing seat 31, a radial convex ring 43 is integrally arranged in the middle part of the piston 41, a first oil cavity 44 and a second oil cavity 45 are arranged in the cylinder body 42, the first oil cavity 44 and the second oil cavity 45 are respectively arranged at two axial sides of the radial convex ring 43, a first oil port 46 and a second oil port 47 are arranged on the side wall of the cylinder body 42, the first oil port 46 is communicated with the first oil chamber 44, the second oil port 47 is communicated with the second oil chamber 45, a cylinder cover 48 is installed at the other end of the cylinder body 42, the other end of the piston 41 extends out of the cylinder cover 48, a signaling plate 51 is fixed at the other end of the piston 41, a first signal switch 52 and a second signal switch 53 which are matched with the signaling plate 51 are connected and arranged on the cylinder cover 48, and the first signal switch 52 and the second signal switch 53 are respectively arranged at two limit positions of the piston 41 in linear motion.
In this embodiment, the other end of the pull rod 1 is provided with a radial positioning ring 11, the other end of the pull rod is in threaded connection with a compression ring 12 and a spacer 13, the number of the two plane bearings 2 is two, the two plane bearings 2 are respectively installed on the spacer 13, and the spacer 13 is clamped by the radial positioning ring 11 and the compression ring 12.
In this embodiment, a first U-shaped seal ring 61 is disposed between one end of the piston 41 and the cylinder 42, the first U-shaped seal ring 61 is fixed to the cylinder 42, a rotary pressure seal 62 and an O-shaped seal ring 63 are disposed between the radial protruding ring 43 and the cylinder 42, the rotary pressure seal 62 and the O-shaped seal ring 63 are respectively fixed to the radial protruding ring 43, a second U-shaped seal ring 64 is disposed between the other end of the piston 41 and the cylinder head 48, and the second U-shaped seal ring 64 is mounted on the cylinder head 48.
In this embodiment, an internal threaded hole 14 is formed at one end of the pull rod 1, a connecting rod 72 is fixed on the chuck 71, the pull rod 1 is in threaded connection with the connecting rod 72, an insertion hole 33 is formed on the side wall of the mounting seat 32, a positioning hole 15 matched with the insertion hole 33 is formed on the pull rod 1, when the bearing seat 31 drives the pull rod 1 to move to the position where the positioning hole 15 is opposite to the insertion hole 33, a metal rod (not shown in the figure) is inserted into the insertion hole 33 and the positioning hole 15, and the pull rod 1 is fixed, so that the connecting rod 72 is in threaded connection with the pull rod 1.
In this embodiment, the side wall of the mounting seat 32 is provided with an oil hole 34, the oil hole 34 is used for filling lubricating grease, the outer peripheral wall of the bearing seat 31 is provided with a plurality of annular oil grooves 35, and the oil grooves 35 are used for storing lubricating grease.
In this embodiment, the piston 41 is fixedly connected to the bearing seat 31 by a bolt 49, and the bolt 49 is threaded through the bearing seat 31 and connected to the piston 41.
The rotary oil cylinder is used for a fourth shaft of the vertical machining center, is arranged in a machine tool protection room, does not need to be perforated in the machine tool protection room, is safe and reliable to use, and the pull rod 1 can independently rotate by 0-360 degrees and can synchronously and linearly move along with the piston 41. The effect of the rotary oil cylinder after being installed is shown in figures 3 and 4.
The working principle of the rotary oil cylinder is as follows: hydraulic oil enters the first oil chamber 44 through the first oil port 46, the piston 41 is pushed to move to a limit position (namely, a right limit position shown in fig. 2) far away from the mounting seat 32, at this time, the piston 41 is a pulling force on the pull rod 1, the pull rod 1 pulls the chuck 71 to clamp, so that a workpiece (not shown in the figure) on the chuck 71 is clamped, the first signal switch 52 feeds the position of the piston 41 back to a machine tool control system, a robot or a manipulator (not shown in the figure) of the vertical machining center can be activated to perform loading machining on the workpiece, and in the machining process, the pull rod 1 and the bearing seat 31 can synchronously rotate along with the chuck 71; when the workpiece needs to be loosened, the oil is returned from the first oil port 46 and fed into the second oil port 47, so that the piston 41 is pushed to move to a limit position (namely, a left limit position shown in fig. 1) close to the mounting seat 32, at this time, the piston 41 is used for pushing the pull rod 1, the pull rod 1 pushes the chuck 71 to loosen the workpiece, the second signal switch 53 feeds the position of the piston 41 back to a machine tool control system, and the robot or the manipulator of the vertical machining center can be activated to perform blanking operation on the workpiece.
Claims (9)
1. The oil-drainage-free rotary oil cylinder for the vertical adding fourth shaft is characterized by comprising a rotary part and an oil cylinder which are coaxially arranged, wherein the rotary part comprises a pull rod, a plane bearing, a bearing seat and a mounting seat, the bearing seat is linearly movably installed in the mounting seat, the plane bearing is installed in the bearing seat, one end of the pull rod is used for connecting a chuck installed on a rotary table of the vertical adding fourth shaft, the other end of the pull rod extends into the mounting seat to be connected with the plane bearing, the oil cylinder comprises a piston and a cylinder body, one end of the cylinder body is fixedly connected with the mounting seat, the piston is linearly movably installed in the cylinder body, one end of the piston extends out of the cylinder body to be fixedly connected with the bearing seat, and a radial convex ring is integrally arranged in the middle of the piston, the oil cylinder is characterized in that a first oil cavity and a second oil cavity are arranged in the cylinder body, the first oil cavity and the second oil cavity are respectively arranged on two axial sides of the radial convex ring, a first oil port and a second oil port are arranged on the side wall of the cylinder body, the first oil port is communicated with the first oil cavity, and the second oil port is communicated with the second oil cavity.
2. The oil drainage-free rotary oil cylinder for the vertical addition of the fourth shaft as claimed in claim 1, wherein a spacer is fixed to the other end of the pull rod, the number of the planar bearings is two, and the two planar bearings are respectively mounted on the spacer.
3. The oil-drainage-free rotary oil cylinder for the fourth shaft of the vertical shaft as claimed in claim 2, wherein a radial positioning ring is integrally arranged at the other end of the pull rod, a pressing ring is in threaded connection with the other end of the pull rod, and the spacer bush is clamped by the radial positioning ring and the pressing ring.
4. The oil drainage-free rotary oil cylinder for the vertical addition of the fourth shaft as claimed in claim 1, wherein a cylinder cover is installed at the other end of the cylinder body, the other end of the piston extends out of the cylinder cover, a signaling plate is fixed at the other end of the piston, a first signal switch and a second signal switch matched with the signaling plate are connected to the cylinder cover, and the first signal switch and the second signal switch are respectively arranged at two limit positions of the linear motion of the piston.
5. The oil drainage-free rotary oil cylinder for the vertical addition of the fourth shaft as claimed in claim 4, wherein a first U-shaped sealing ring is arranged between one end of the piston and the cylinder body, the first U-shaped sealing ring is fixed on the cylinder body, a rotary pressure seal and an O-shaped sealing ring are arranged between the radial convex ring and the cylinder body, the rotary pressure seal and the O-shaped sealing ring are respectively fixed on the radial convex ring, a second U-shaped sealing ring is arranged between the other end of the piston and the cylinder cover, and the second U-shaped sealing ring is installed on the cylinder cover.
6. The oil drain-free rotary oil cylinder for the vertical addition of the fourth shaft as claimed in claim 1, wherein an internal threaded hole is formed at one end of the pull rod, the chuck is fixed with a connecting rod, the pull rod is in threaded connection with the connecting rod, the side wall of the mounting seat is provided with an insertion hole, the pull rod is provided with a positioning hole matched with the insertion hole, when the bearing seat drives the pull rod to move to the position where the positioning hole is opposite to the insertion hole, a metal rod is inserted into the insertion hole and the positioning hole to fix the pull rod, and at this time, the connecting rod is in threaded connection with the pull rod.
7. The oil drainage-free rotary oil cylinder for the vertical shaft as claimed in claim 1, wherein an oil hole is formed in a side wall of the mounting seat, and the oil hole is used for filling lubricating grease.
8. The oil drainage-free rotary oil cylinder for the vertical shaft as claimed in claim 7, wherein the outer peripheral wall of the bearing seat is provided with a plurality of annular oil grooves for storing lubricating grease.
9. The oil drain-free rotary oil cylinder for the vertical shaft as claimed in claim 1, wherein the piston is fixedly connected with the bearing seat through a bolt, and the bolt penetrates through the bearing seat and is in threaded connection with the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121950801.6U CN216131176U (en) | 2021-08-19 | 2021-08-19 | Oil drainage-free rotary oil cylinder for vertical addition of fourth shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121950801.6U CN216131176U (en) | 2021-08-19 | 2021-08-19 | Oil drainage-free rotary oil cylinder for vertical addition of fourth shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216131176U true CN216131176U (en) | 2022-03-25 |
Family
ID=80770659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121950801.6U Withdrawn - After Issue CN216131176U (en) | 2021-08-19 | 2021-08-19 | Oil drainage-free rotary oil cylinder for vertical addition of fourth shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216131176U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113738733A (en) * | 2021-08-19 | 2021-12-03 | 宁波海天精工股份有限公司 | Oil drainage-free rotary oil cylinder for vertical addition of fourth shaft |
-
2021
- 2021-08-19 CN CN202121950801.6U patent/CN216131176U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113738733A (en) * | 2021-08-19 | 2021-12-03 | 宁波海天精工股份有限公司 | Oil drainage-free rotary oil cylinder for vertical addition of fourth shaft |
| CN113738733B (en) * | 2021-08-19 | 2024-05-17 | 宁波海天精工股份有限公司 | A no draining rotary cylinder for immediately, add fourth axle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20220325 Effective date of abandoning: 20240430 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20220325 Effective date of abandoning: 20240430 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |