CN112894435A - Rotary clamping and locking hydraulic device - Google Patents
Rotary clamping and locking hydraulic device Download PDFInfo
- Publication number
- CN112894435A CN112894435A CN202110382910.0A CN202110382910A CN112894435A CN 112894435 A CN112894435 A CN 112894435A CN 202110382910 A CN202110382910 A CN 202110382910A CN 112894435 A CN112894435 A CN 112894435A
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- China
- Prior art keywords
- cylinder body
- piston rod
- end cover
- hydraulic
- shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
- B23Q3/082—Work-clamping means other than mechanically-actuated hydraulically actuated
Abstract
The invention discloses a rotary clamping and locking hydraulic device, wherein a piston rod in the structure is provided with a central hole, the central hole is in clearance fit with a guide rod, the guide rod is provided with a lead groove, and a steel ball is installed and tightly pressed in the lead groove. In the working process, a piston rod of the hydraulic device moves according to the track of the lead groove, so that the perfect combination of the linear motion and the rotary motion of the clamping arm is realized, and the clamping locking and the loosening release of the workpiece can be better completed. The hydraulic device is provided with a proximity switch, and can send out a signal after moving in place, the signal is transmitted to the control system, and the control system gives an action instruction according to the signal; the hydraulic device is integrated with a hydraulic control one-way valve, and reliable clamping and locking of the workpiece can be realized. The invention is a technical innovation of one-time expansibility in the prior art and has good popularization and use values.
Description
Technical Field
The invention relates to clamping and locking of workpieces in industrial production, in particular to a rotary clamping and locking hydraulic device.
Background
With the rapid development of the industry, the application of the automatic production line is more and more extensive. On a production line, the rapid and reliable clamping and locking of workpieces always have the problem of restricting the production efficiency. The existing clamping device can not independently realize the linear motion and the rotary motion of the clamping arm, needs a plurality of devices to complete the function, and has relatively complex mechanism.
Disclosure of Invention
The invention mainly solves the technical problem of how to provide a rotary clamping and locking hydraulic device which combines linear motion and rotary motion of a clamping arm, is arranged on an industrial production line and can quickly and reliably clamp and lock a workpiece on a station.
In order to solve the technical problems, the invention adopts the technical scheme that: a rotary clamping and locking hydraulic device is characterized by structurally comprising a clamping arm (1) which is connected through a thread fit designed at one end of a piston rod (2), a stepped shaft is designed at the excircle of the other end of the piston rod (2), a central hole is designed at the axis, the central hole is in clearance fit with a guide rod (4), a guide belt (12) for a shaft is arranged at the outer end of the central hole, the large-diameter end of the stepped shaft of the piston rod (2) is also used as a moving piston and is in clearance fit with a cylinder body (5), and a shaft hole general seal (13) and a guide belt (14) for the hole are arranged; the front end cover (3) is in clearance fit with the cylinder body (5), threads are processed on the cylinder body, a through hole is processed on the front end cover, the front end cover and the cylinder body are connected together through an inner hexagon bolt (23), and sealing is carried out through an O-shaped ring and a first check ring (11); a hexagon socket flat end set screw (6) is arranged on the piston rod (2) through threads, and a steel ball (8) is tightly pressed in the lead groove of the guide rod (4) through a steel ball support column (7); the sealing blocking cover (20) is connected to the rear end cover (10) through threads, and an O-shaped ring and a second check ring (19) are installed on the sealing blocking cover (20).
Preferably, the guide rod (4) is fixed on the rear end cover (10) through an internal thread cylindrical pin (21), and the internal thread cylindrical pin (21) is in transition fit with the guide rod mounting fixing hole (42); the rear end cover (10) is in clearance fit with the cylinder body (5), threads are machined on the cylinder body, a through hole is machined in the rear end cover (10), the rear end cover and the cylinder body are connected together through an inner hexagonal bolt (23), and sealing is carried out through an O-shaped ring and a first check ring (11).
Preferably, the guide rod (4) is designed with a lead groove (41) and a mounting and fixing hole (42);
preferably, the lead groove (41) is provided with a straight line segment a, a curved line segment b, and a straight line segment c in this order.
Preferably, the front end cover (3) is in clearance fit with the piston rod (2), a shaft guide belt (15), a Stent seal (16), a shaft seal (17) and a dust ring (18) are designed on a matching surface, the shaft guide belt (15) plays a role in supporting and guiding, the Stent seal (16) and the shaft seal (17) prevent hydraulic oil from leaking outwards, and the dust ring (18) prevents external foreign matters from being brought into the cylinder body through the movement of the piston rod.
Preferably, high-pressure-resistant proximity switches (9) and plug-in type hydraulic control one-way valves (22) are designed at two ends of the cylinder body (5), are installed through threaded connection, and are sealed through self-contained sealing elements, so that internal leakage and external leakage of hydraulic oil are prevented.
The piston rod in the structure of the rotary clamping and locking hydraulic device is provided with a central hole, the central hole is in clearance fit with the guide rod, the guide rod is provided with a lead groove, and a steel ball is installed and pressed in the lead groove. In the working process, a piston rod of the hydraulic device moves according to the track of the lead groove, so that the perfect combination of the linear motion and the rotary motion of the clamping arm is realized, and the clamping locking and the loosening release of the workpiece can be better completed. The hydraulic device is provided with a proximity switch, and can send out a signal after moving in place, the signal is transmitted to the control system, and the control system gives an action instruction according to the signal; the hydraulic device is integrated with a hydraulic control one-way valve, and reliable clamping and locking of the workpiece can be realized. The invention is a technical innovation of one-time expansibility in the prior art and has good popularization and use values.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic view of a clamping state structure of the hydraulic device of the present invention;
FIG. 2 is a left side view of FIG. 1 of the present invention;
FIG. 3 is a top plan view of FIG. 1 of the present invention;
FIG. 4 is a cross-sectional view taken along line C-C of FIG. 3 in accordance with the present invention;
figure 5 is a structural schematic view of a straight line segment a of the lead groove of the invention;
figure 6 is a schematic structural view of a curved section b and a straight section c of the lead groove of the invention;
FIG. 7 is a schematic diagram of the principles of the present invention;
FIG. 8 is a schematic view of the stroke angle mapping of the present invention;
FIG. 9 is a schematic view of the hydraulic apparatus of the present invention in a fully released condition;
FIG. 10 is a schematic view of the guide bar of the present invention in contact with a steel ball;
reference numerals:
1-a clamping arm; 2-a piston rod; 3-front end cover; 4-a guide rod; 41-lead grooves; 42-mounting a fixing hole; 5-cylinder body; 6-tightening a set screw at the flat end of the inner hexagon; 7-steel ball top column; 8-steel ball; 9-high voltage resistant proximity switch; 10-rear end cap; 11-O-shaped ring and a first check ring; 12-guide belt for shaft; 13-universal sealing of shaft holes; 14-guide band for hole; 15-guide belt for shaft; 16-steckel; 17-shaft seal; 18-a dust ring; 19-O-shaped ring and a second check ring; 20-sealing the plugging cover; 21-an internal threaded cylindrical pin; 22-plug-in mounting type hydraulic control one-way valves; 23-hexagon socket head cap screw; a-straight line segment a; b-curve segment b; c-straight line segment c; a-rodless cavity oil port; b-rod cavity oil port.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the attached drawings 1-10, a rotary clamping and locking hydraulic device is characterized in that a clamping arm 1 is connected in a matched mode through threads designed at one end of a piston rod 2, a stepped shaft is designed on the outer circle of the other end of the piston rod 2, the large-diameter end of the stepped shaft is also used as a moving piston, a central hole is designed at the axis and is connected with a guide rod 4 in a clearance fit mode, a guide belt 12 for a shaft is arranged at the outer end of the central hole, and the guide belt 12 plays a role in guiding and supporting in the; the large-diameter end of the stepped shaft of the piston rod 2 is also used as a moving piston, the moving piston is in clearance fit connection with the cylinder body 5, a shaft hole general seal 13 and a hole guide belt 14 are arranged, the shaft hole general seal 13 prevents the mutual leakage of hydraulic oil on two sides of the piston in the working process, and the hole guide belt 14 plays a role in supporting and guiding.
In the specific implementation process, the guide rod 4 is made of 42CrMo material, is subjected to quenching, tempering and nitriding treatment, and is provided with a lead groove 41 and a mounting fixing hole 42; the lead groove 41 has a straight line section a, a curved line section b and a straight line section c (as shown in fig. 5 and 6), and can realize the linear motion and the rotary motion of the clamping arm of the hydraulic device according to the designed track.
In the specific implementation process, the outer diameter phi 8 of the steel ball 8 is adjusted, the inner hexagonal flat end set screw 6 is installed on the piston rod through threads, and the steel ball 8 is tightly pressed in the lead groove of the guide rod 4 through the steel ball support column 7.
In the specific implementation process, the steel ball support column 7 is made of 40Cr materials, is subjected to surface quenching treatment, and is machined with a matching surface with the steel ball.
In a specific implementation process, the guide rod 4 is fixed on the rear end cover 10 through the internal thread cylindrical pin 21, and the internal thread cylindrical pin 21 is in transition fit with the guide rod mounting fixing hole 42. The sealing blocking cover 20 is connected to the rear end cover 10 through threads, and compresses the internal thread cylindrical pin 21 to prevent the internal thread cylindrical pin from axially moving; and an O-shaped ring and a second check ring 19 are arranged on the sealing plug cover to prevent hydraulic oil from leaking.
In the specific implementation process, the rear end cover 10 is in clearance fit with the cylinder body 5, threads are machined on the cylinder body, through holes are machined in the rear end cover and are connected together through the hexagon socket head cap bolts 23, and sealing is carried out through the O-shaped ring and the first check ring 11, so that hydraulic oil is prevented from leaking. The front end cover 3 is in clearance fit with the cylinder body 5, threads are machined on the cylinder body, through holes are machined in the front end cover, the front end cover and the cylinder body are connected together through the hexagon socket head cap bolts 23, and sealing is carried out through the O-shaped ring and the check ring I11, so that hydraulic oil is prevented from leaking; the front end cover 3 is in clearance fit with the piston rod 2, a shaft guide belt 15, a Stent seal 16, a shaft seal 17 and a dust ring 18 are designed on a matching surface, the shaft guide belt 15 plays a role in supporting and guiding, the Stent seal 16 and the shaft seal 17 prevent hydraulic oil from leaking, and the dust ring 18 prevents external foreign matters from being brought into the cylinder body through the movement of the piston rod.
In the specific implementation process, high-pressure-resistant proximity switches 9 and plug-in type hydraulic control one-way valves 22 are designed at two ends of the cylinder body, are installed through threaded connection, and are sealed through self-contained sealing elements, so that internal leakage and external leakage of hydraulic oil are prevented.
In the specific implementation process, when the piston rod moves to the stroke end, the high-voltage-resistant proximity switch 9 can sense the position of the moving piston and send a signal. The plug-in hydraulic control check valve 22 allows hydraulic oil to freely flow in one direction, when the pressure control port pushes open the valve core closed by the pressure of the outlet side, the hydraulic oil can freely flow in the reverse direction, and the pressure control ports of the hydraulic control check valve are respectively connected with the oil port on the other side of the hydraulic device (the principle is shown in fig. 7).
The invention will be further described in connection with the use of a rotary clamp lock hydraulic device:
the rotary clamping locking hydraulic device is installed on a production line, when a workpiece clamped by the device is machined, an oil port A of a rodless cavity of the hydraulic device is fed with oil, the oil in the rodless cavity simultaneously enters a pressure guide port of a plug-in hydraulic control one-way valve at the position of a rod cavity, the plug-in hydraulic control one-way valve at the position of the rod cavity is opened, an oil port B of the rod cavity returns oil, a piston rod of the hydraulic device stretches out at the moment and moves according to a guide rod lead groove track, the linear motion is started, a clamping arm of the hydraulic device loosens and breaks away from the clamped workpiece, when a steel ball enters a lead groove curve section, the piston rod stretches out and rotates simultaneously, and when the steel ball rotates by 90 degrees, the linear motion is started again (the stroke angle. When the piston rod is completely extended out, a high-pressure-resistant proximity switch YJ2 at the position of the rod cavity sends a signal, the rodless cavity stops supplying oil, the plug-in one-way valves at the two ends are closed, the piston rod of the hydraulic device is in a position holding state, and at the moment, the clamping arm of the hydraulic device completely avoids the movement space of the clamped workpiece, so that the workpiece can be moved to other stations. (the hydraulic device piston rod is fully extended as shown in figure 9).
When a workpiece is placed in place, the hydraulic device is provided with a rod cavity oil port B for feeding oil, the oil in the rod cavity simultaneously enters a plug-in type hydraulic control one-way valve pressure guide port at the rodless cavity, the plug-in type hydraulic control one-way valve at the rodless cavity is opened, the rod cavity oil port A returns oil, the piston rod of the hydraulic device retracts at the moment and moves according to the track of the guide rod lead groove, linear motion is started, when a steel ball enters the curve section of the lead groove, the piston rod simultaneously extends and rotates, and after the steel ball rotates for 90 degrees, the piston rod starts to move linearly. When the piston rod is completely retracted, a high-pressure-resistant proximity switch YJ1 at the position of the rodless cavity sends a signal, the oil supply of the rod cavity is stopped, the plug-in type one-way valves at the two ends are closed, and the workpiece is clamped and locked by the clamping arm of the hydraulic device. In this case, the workpiece can be processed.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A rotary clamping and locking hydraulic device is characterized by structurally comprising a clamping arm (1) which is connected through a thread fit designed at one end of a piston rod (2), a stepped shaft is designed at the excircle of the other end of the piston rod (2), a central hole is designed at the axis, the central hole is in clearance fit with a guide rod (4), a guide belt (12) for a shaft is arranged at the outer end of the central hole, the large-diameter end of the stepped shaft of the piston rod (2) is also used as a moving piston and is in clearance fit with a cylinder body (5), and a shaft hole general seal (13) and a guide belt (14) for the hole are arranged; the front end cover (3) is in clearance fit with the cylinder body (5), threads are processed on the cylinder body, a through hole is processed on the front end cover, the front end cover and the cylinder body are connected together through an inner hexagon bolt (23), and sealing is carried out through an O-shaped ring and a first check ring (11); the inner hexagonal flat end set screw (6) is installed on the piston rod (2) through threads, and the steel ball (8) is tightly pressed in the guide rod (4) lead groove through the steel ball support column (7).
2. A rotary clamping and locking hydraulic device according to claim 1, characterized in that the guide rod (4) is fixed on the rear end cover (10) through an internal threaded cylindrical pin (21), and the internal threaded cylindrical pin (21) is in transition fit with the guide rod mounting fixing hole (42); the rear end cover (10) is in clearance fit with the cylinder body (5), threads are machined on the cylinder body, a through hole is machined in the rear end cover (10), the rear end cover and the cylinder body are connected together through an inner hexagonal bolt (23), and sealing is carried out through an O-shaped ring and a first check ring (11); the sealing blocking cover (20) is connected to the rear end cover (10) through threads, and an O-shaped ring and a second check ring (19) are installed on the sealing blocking cover (20).
3. Hydraulic rotary clamp lock device according to claim 1, characterised in that the guide rod (4) is designed with a lead groove (41) and a mounting fixing hole (42).
4. A rotary clamp lock hydraulic device according to claim 1, characterized in that the lead groove (41) is provided with a straight line section a, a curved line section b, and a straight line section c in this order.
5. The hydraulic rotary clamping and locking device as claimed in claim 1, wherein the front end cover (3) is in clearance fit with the piston rod (2), the matching surface is designed with a guide belt (15) for the shaft, a Stent seal (16), a seal (17) for the shaft and a dust ring (18), the guide belt (15) for the shaft plays a role in supporting and guiding, the Stent seal (16) and the seal (17) for the shaft prevent hydraulic oil from leaking, and the dust ring (18) prevents external foreign matters from being brought into the cylinder body through the movement of the piston rod.
6. The hydraulic rotary clamping and locking device as claimed in claim 1, wherein the cylinder (5) is designed with high pressure resistant proximity switches (9) and plug-in hydraulic control one-way valves (22) at both ends, and is installed by screw connection, and is sealed by a self-contained sealing element to prevent internal and external leakage of hydraulic oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110382910.0A CN112894435A (en) | 2021-04-09 | 2021-04-09 | Rotary clamping and locking hydraulic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110382910.0A CN112894435A (en) | 2021-04-09 | 2021-04-09 | Rotary clamping and locking hydraulic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112894435A true CN112894435A (en) | 2021-06-04 |
Family
ID=76110322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110382910.0A Pending CN112894435A (en) | 2021-04-09 | 2021-04-09 | Rotary clamping and locking hydraulic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112894435A (en) |
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2021
- 2021-04-09 CN CN202110382910.0A patent/CN112894435A/en active Pending
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