An oil-electric hybrid automated clamp

Abstract

The application discloses an oil-electricity hybrid automatic clamp, which comprises an electromagnetic chuck and a plurality of clamping mechanisms, wherein the electromagnetic chuck is provided with a workpiece fixing station; the electromagnetic chuck is internally provided with an oil supply channel; the clamping mechanisms are arranged around the workpiece fixing station and are internally provided with hydraulic oil channels; and the oil supply channel and the hydraulic oil channels are directly communicated with each other. The oil-electricity hybrid automatic clamp can supply oil to the inside of the electromagnetic chuck, can realize mutual non-interference of oil and electricity, and can completely eliminate the problem of accumulated chips of an external oil pipe.

Description

Technical Field

[0001] This invention relates to the field of clamping technology, and more specifically to a hybrid electric-hydraulic automated clamping fixture. Background Technology

[0002] The connecting rod for the fork retraction area is the most critical component of high-speed rail tracks. To meet automation requirements, the upper surface and sides of the connecting rod for the fork retraction area are machined in sequence. Due to the characteristics of the part, there are no clamping positions. There are no fixtures in the manufacturing industry that meet the above requirements for the connecting rod for the fork retraction area.

[0003] Existing fixtures all use electromagnetic chucks to hold parts for machining. However, due to the limitations of electromagnetic chucks, parts shift during machining. If other clamping structures are installed on the electromagnetic chucks, the problem of chip accumulation on the external oil pipes becomes difficult to solve. Summary of the Invention

[0004] 1. The technical problem that the invention aims to solve

[0005] The purpose of this invention is to solve the technical problems existing in the prior art and provide an oil-electric hybrid automated clamp that can use an electromagnetic chuck with oil flowing inside, so that the oil and electricity do not interfere with each other and completely eliminate the problem of debris accumulation in the external oil pipe.

[0006] 2. Technical Solution

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

[0008] An automated hydraulic-electric hybrid fixture includes an electromagnetic chuck with a workpiece fixing station; several clamping mechanisms are arranged around the workpiece fixing station; the electromagnetic chuck has an oil supply channel, and the clamping mechanisms have hydraulic oil channels, the oil supply channel and the hydraulic oil channel are directly connected.

[0009] Optionally, the clamping mechanism includes a side clamping mechanism, which includes a base connected to the electromagnetic chuck; a first cavity disposed within the base; a first hydraulic oil channel communicating with one end of the first cavity; a second hydraulic oil channel communicating with the other end of the first cavity; a first piston movably assembled within the first cavity; and a push rod connected to the first piston, one end of which extends to the base and is positioned toward the workpiece fixing position.

[0010] Optionally, a second cavity is connected to the first cavity, and a third hydraulic oil channel and a fourth hydraulic oil channel are respectively connected to both ends of the second cavity. A second piston is movably mounted on the second cavity, and a limit rod is connected to the second piston. A limiting structure that cooperates with the limit rod is provided on the first piston.

[0011] Optionally, the connection position between the second cavity and the first cavity is located on the side of the first piston away from the push rod, the third hydraulic oil channel is connected to the first cavity, and the second hydraulic oil channel and the third hydraulic oil channel are the same hydraulic oil channel.

[0012] Optionally, the first piston moves in the first cavity along a first direction, and the second piston moves in the second cavity along a second direction, wherein the first direction and the second direction are perpendicular to each other.

[0013] Optionally, the end of the limiting rod is provided with a first limiting inclined surface, and the limiting structure includes a second limiting inclined surface provided on the first piston, wherein the first limiting inclined surface and the second limiting inclined surface abut against each other.

[0014] Optionally, a guide block is provided on the first limiting inclined surface, and a guide groove is provided on the first piston along the first direction, wherein the guide block and the guide groove are slidably engaged.

[0015] Optionally, the clamping mechanism further includes a rotary clamp, which also has a hydraulic oil channel. The oil supply channel and the hydraulic oil channel of the rotary clamp are directly connected. The rotary clamp includes a control base and a chuck. The chuck is connected to the output shaft of the control base, and the control base controls the lifting and rotation of the chuck.

[0016] Optionally, the clamping mechanism further includes a detection structure, which includes an airtight base connected to the electromagnetic chuck; an airtight channel disposed within the airtight base; an airtight detection port connected to the airtight channel; and an airtight plug elastically connected to the airtight base via an elastic element. When the rotary clamp releases the workpiece from its clamping state, the airtight plug abuts against the chuck to seal the airtight detection port.

[0017] Optionally, the clamping mechanism further includes a detection structure, which includes a detection base connected to the electromagnetic chuck; a guide rod elastically connected to the detection base via an elastic element; a detection part disposed at the end of the guide rod; and a detector connected to the detection base. When the rotary clamp releases the workpiece from its clamping state, the chuck pushes the guide rod to move.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the technical solution provided by this invention has the following advantages:

[0020] This hybrid oil-electric automated fixture uses an electromagnetic chuck with internal oil circulation to ensure that the oil and electricity do not interfere with each other. Tooling fixtures are designed above the electromagnetic chuck for product processing. On the one hand, from an automation perspective, due to the large number of movements, the problem of chip accumulation on the external oil pipe is difficult to handle. On the other hand, from an appearance perspective, it is more aesthetically pleasing and the fixture has a high degree of integration. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a hybrid electric automated fixture proposed in Embodiment 1 of the present invention;

[0022] Figure 2 This is a schematic diagram of the side clamping mechanism of a hybrid electric automated fixture according to Embodiment 1 of the present invention;

[0023] Figure 3 This is a schematic diagram of the rotary clamping device in a hybrid electric automated fixture according to Embodiment 1 of the present invention;

[0024] Figure 4 This is a schematic diagram of the detection structure in a hybrid electric automated fixture according to Embodiment 1 of the present invention;

[0025] Figure 5 This is a schematic diagram of the detection structure in a hybrid electric automated fixture according to Embodiment 2 of the present invention;

[0026] 10. Electromagnetic chuck;

[0027] 20. Side clamping mechanism; 201. Base; 202. First cavity; 203. First hydraulic oil passage; 204. Second hydraulic oil passage; 205. First piston; 2051. Second limiting slope; 2052. Guide groove; 206. Push rod; 207. Second cavity; 208. Third hydraulic oil passage; 209. Fourth hydraulic oil passage; 210. Second piston; 211. Limiting rod; 2111. First limiting slope; 212. Guide block;

[0028] 30. Rotary clamp; 301. Control base; 302. Chuck;

[0029] 40. Detection structure; 401. Airtight base; 402. Airtight channel; 403. Airtight detection port; 404. Airtight plug; 405. Elastic element;

[0030] 50. Detection structure; 501. Detection base; 502. Guide rod; 503. Elastic element; 504. Detection section; 505. Detector. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of protection of this invention.

[0032] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component. Furthermore, when a component is considered to be "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in the prior art and will not be elaborated upon here. When a component is perpendicular or approximately perpendicular to another component, it means that the ideal state is perpendicularity, but due to manufacturing and assembly effects, there may be a certain degree of perpendicularity error. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only and do not represent the only possible implementation.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] In this invention, the terms "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.

[0035] Example 1

[0036] Combined with appendix Figures 1-4 This embodiment of an automated hydraulic-electric hybrid clamp includes an electromagnetic chuck 10, which generates magnetism when energized to attract and hold a workpiece. The electromagnetic chuck 10 has a workpiece fixing station for positioning and placing the workpiece. Several clamping mechanisms are arranged around the workpiece fixing station to clamp and fix the workpiece from multiple directions. The electromagnetic chuck 10 has an oil supply channel, which is directly opened in the electromagnetic chuck 10 at a position that avoids wiring. The electromagnetic chuck 10 has more than one oil supply channel. The clamping mechanisms have hydraulic oil channels. The oil supply channels and hydraulic oil channels are directly connected. The connection position of the oil supply channels and hydraulic oil channels is located on the upper end surface of the electromagnetic chuck 10, that is, the connection surface between the electromagnetic chuck 10 and the clamping mechanisms.

[0037] This hybrid oil-electric automated fixture uses an electromagnetic chuck with internal oil circulation to ensure that the oil and electricity do not interfere with each other. Tooling fixtures are designed above the electromagnetic chuck for product processing. On the one hand, from an automation perspective, due to the large number of movements, the problem of chip accumulation on the external oil pipe is difficult to handle. On the other hand, from an appearance perspective, it is more aesthetically pleasing and the fixture has a high degree of integration.

[0038] As an optional embodiment of the present invention, the clamping mechanism includes a side clamping mechanism 20, which abuts against the side of the workpiece to provide auxiliary fixation. Specifically, the side clamping mechanism 20 includes a base 201, which is sealed to the electromagnetic chuck 10; a first cavity 202, which is disposed within the base 201 and is arranged horizontally within the base 201; a first hydraulic oil channel 203, which communicates with one end of the first cavity 202; a second hydraulic oil channel 204, which communicates with the other end of the first cavity 202; and a first piston 205, which is movably assembled within the first cavity 202. Since the first piston 205 is set horizontally, its movement direction within the first cavity 202 is also horizontal. A push rod 206 is connected to the first piston 205, with one end of the push rod 206 extending to the base 201 and facing the workpiece fixing position. By controlling the ratio of hydraulic oil at both ends of the first cavity 202 through the first hydraulic oil channel 203 and the second hydraulic oil channel 204, the movement distance of the first piston 205 within the first cavity 202 can be controlled, thereby controlling the pressing action and pressing amplitude of the push rod 206 on the workpiece. Moreover, since there is hydraulic oil on both sides of the first piston 205, it can better achieve the positioning function and adjustment accuracy of the first piston 205 after its movement.

[0039] As an optional embodiment of the present invention, a second cavity 207 is connected to the first cavity 202. The first cavity 202 is vertically disposed within the base 201 and located below the first cavity 202. The first cavity 202 and the second cavity 207 are connected in communication. A third hydraulic oil channel 208 and a fourth hydraulic oil channel 209 are respectively connected to both ends of the second cavity 207. A second piston 210 is movably mounted on the second cavity 207, and the second cavity is controlled by the third hydraulic oil channel 208 and the fourth hydraulic oil channel 209. The ratio of hydraulic oil at both ends of body 207 can control the movement distance of the first piston 205 within the first cavity 202. A limit rod 211 is connected to the second piston 210, and a limiting structure that cooperates with the limit rod 211 is provided on the first piston 205. When the first piston 205 pushes out the push rod 206 to press the workpiece, the limit rod 211 cooperates with the limiting structure on the first piston 205 to play an auxiliary limiting role for the first piston 205, thereby ensuring the stability of the push rod 206 when pressing the workpiece.

[0040] As an optional embodiment of the present invention, the connection position between the second cavity 207 and the first cavity 202 is located on the side of the first piston 205 away from the push rod 206, and the third hydraulic oil channel 208 is connected to the first cavity 202. In this case, the second hydraulic oil channel 204 and the third hydraulic oil channel 208 are the same hydraulic oil channel. Specifically, when the push rod 206 needs to be pushed outward, oil enters the third hydraulic oil channel 208, and hydraulic oil enters the first cavity 202 from the second cavity 207 to push the first piston 205 towards the other side of the first cavity 202. At one end, when the push rod 206 is pressed against the workpiece, oil enters the fourth hydraulic oil channel 209 to push the second piston 210 towards the first cavity 202, so that the limiting rod 211 on the second piston 210 abuts against the first piston 205 and cooperates with the limiting structure on the first piston 205. When the second piston 210 moves towards the first cavity 202, the pressure in the first cavity 202 will increase, thereby stably pushing the push rod 206 outward. When releasing the limiting of the first piston 205, oil needs to be released through the fourth hydraulic oil channel 209 first.

[0041] As an optional embodiment of the present invention, the first piston 205 moves in the first cavity 202 along a first direction, and the second piston 210 moves in the second cavity 207 along a second direction. The first direction and the second direction are perpendicular to each other. In this embodiment, the first direction is a horizontal direction and the second direction is a vertical direction. This design makes it difficult for the rebound force of the first piston 205 when it is pressing against the workpiece to push the limiting rod 211.

[0042] As an optional embodiment of the present invention, the end of the limiting rod 211 is provided with a first limiting inclined surface 2111, and the limiting structure includes a second limiting inclined surface 2051 provided on the first piston 205. The first limiting inclined surface 2111 and the second limiting inclined surface 2051 abut against each other. Through the wedge self-locking structure, it can adapt to the limiting of workpieces of different sizes after clamping (the position of the first piston 205 in the first cavity 202 will be different after workpieces of different sizes are clamped), thereby making the application range of this fixture wider.

[0043] As an optional embodiment of the present invention, a guide block 212 is provided on the first limiting inclined surface 2111. The guide block 212 is a protrusion on the first limiting inclined surface 2111. The first piston 205 is provided with a guide groove 2052 arranged along a first direction. The guide block 212 and the guide groove 2052 are slidably engaged. When the first piston 205 moves in the first cavity 202, the guide block 212 guides the first piston 205 through the guide groove 2052 and restricts the first piston 205 from rotating during movement, thereby ensuring a stable engagement between the first limiting inclined surface 2111 and the second limiting inclined surface 2051.

[0044] As an optional embodiment of the present invention, the clamping mechanism further includes a rotary clamp 30, which also has a hydraulic oil channel. The oil supply channel and the hydraulic oil channel of the rotary clamp 30 are directly connected. The hydraulically controlled rotary clamp is existing technology, specifically including a control base 301 and a chuck 302. The chuck 302 is connected to the output shaft of the control base 301. The control base 301 controls the lifting and rotation of the chuck 302. The chuck 302 rotates to above the workpiece and lowers to clamp the upper end face of the workpiece. The chuck 302 rises and rotates away from above the workpiece to release the clamping state of the workpiece. By clamping the workpiece in multiple directions, the clamping effect of the workpiece can be guaranteed. More importantly, when processing the side of the workpiece, the clamping and magnetic attraction of the upper end face of the workpiece can achieve a better fixing effect. When processing the upper end face of the workpiece, the clamping and magnetic attraction of the side of the workpiece can achieve a better fixing effect.

[0045] As an optional embodiment of the present invention, the clamping mechanism further includes a detection structure 40, which includes an airtight base 401 connected to the electromagnetic chuck 10; an airtight channel 402 disposed within the airtight base 401; an airtight detection port 403 connected to the airtight channel 402, the airtight detection port 403 being located at the upper end of the airtight base 401, and an SMC air detection component being provided at the airtight detection port 403; and an airtight plug 404 elastically connected to the airtight base 401 via an elastic element 405, wherein the elastic element 405 generates a spring... Force drives the airtight plug 404 away from the airtight detection port 403. The airtight plug 404 extends from above or below the upper end of the airtight base 401. The movable channel of the airtight plug 404 is connected to the airtight detection port 403. When the rotary clamp 30 releases the clamping state of the workpiece, the airtight plug 404 abuts against the chuck 302 to block the airtight detection port 403. At this time, it is determined that the rotary clamp 30 has released the clamping state of the workpiece, and the position of the rotary clamp 30 can be processed.

[0046] Example 2

[0047] Combined with appendix Figure 5 This embodiment of the hybrid electric automated clamp differs from Embodiment 1 in that it has a different detection structure. The clamping mechanism further includes a detection structure 50, which includes a detection base 501 connected to the electromagnetic chuck 10; a guide rod 502 elastically connected to the detection base 501 via an elastic element 503, the guide rod 502 being vertically arranged on the detection base 501; a detection part 504 located at the lower end of the guide rod 502, the upper end of the guide rod 502 being located at the end abutting against the chuck 302; and a detector 505. Connected to the detection base 501 and located below the detection base 501; when the rotary clamp 30 releases the workpiece clamping state, the guide rod 502 abuts against the chuck 302 so that the guide rod 502 is below, at which time the detection part 504 at the lower end of the guide rod 502 is sensed by the detector 505 (or it can be set so that the detection part 504 at the lower end of the guide rod 502 leaves the detector 505 when the guide rod 502 is with the chuck 302), at which time it is determined that the rotary clamp 30 has released the workpiece clamping state.

[0048] As an optional embodiment of the present invention, the detector 505 is an ohmic proximity switch.

[0049] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A hybrid electric-hydraulic automated fixture, characterized in that: include Electromagnetic chuck, with a workpiece fixing station; Several clamping mechanisms are arranged around the workpiece fixing position; The electromagnetic chuck is provided with an oil supply channel, and the clamping mechanism is provided with a hydraulic oil channel. The oil supply channel and the hydraulic oil channel are directly connected. The clamping mechanism includes a side clamping mechanism, the side clamping mechanism including... The base is connected to the electromagnetic chuck; The first cavity is disposed within the base; The first hydraulic oil passage is connected to one end of the first cavity; The second hydraulic oil passage is connected to the other end of the first cavity; The first piston is movably assembled into the first cavity; A push rod is connected to the first piston, one end of which extends to the base and is positioned toward the workpiece fixing position; The first cavity is connected to a second cavity, and the two ends of the second cavity are respectively connected to a third hydraulic oil channel and a fourth hydraulic oil channel. The second cavity is movably fitted with a second piston, and a limit rod is connected to the second piston. The first piston is provided with a limiting structure that cooperates with the limit rod.

2. The hybrid electric automated fixture according to claim 1, characterized in that: The second cavity is connected to the first cavity at the side of the first piston away from the push rod. The third hydraulic oil passage is connected to the first cavity, and the second hydraulic oil passage and the third hydraulic oil passage are the same hydraulic oil passage.

3. The hybrid electric automated fixture according to claim 1, characterized in that: The first piston moves in the first cavity along a first direction, and the second piston moves in the second cavity along a second direction, wherein the first direction and the second direction are perpendicular to each other.

4. The hybrid electric automated fixture according to claim 3, characterized in that: The end of the limiting rod is provided with a first limiting inclined surface, and the limiting structure includes a second limiting inclined surface provided on the first piston, wherein the first limiting inclined surface and the second limiting inclined surface abut against each other.

5. The hybrid electric automated fixture according to claim 4, characterized in that: A guide block is provided on the first limiting inclined surface, and a guide groove is provided on the first piston along the first direction. The guide block and the guide groove are slidably engaged.

6. A hybrid electric automated fixture according to any one of claims 1-5, characterized in that: The clamping mechanism also includes a rotary clamp, which is also provided with a hydraulic oil channel. The oil supply channel and the hydraulic oil channel of the rotary clamp are directly connected. The rotary clamp includes a control base and a chuck. The chuck is connected to the output shaft of the control base, and the control base controls the lifting and rotation of the chuck.

7. The hybrid electric automated fixture according to claim 6, characterized in that: The clamping mechanism further includes a detection structure, the detection structure including... An airtight base is connected to the electromagnetic chuck; An airtight channel is provided inside the airtight base; An airtightness detection port is connected to the airtightness channel; An airtight plug is elastically connected to the airtight base via an elastic element; When the rotary clamp releases the workpiece, the airtight plug abuts against the clamp to seal the airtightness detection port.

8. The hybrid electric automated fixture according to claim 6, characterized in that: The clamping mechanism further includes a detection structure, the detection structure including... The detection base is connected to the electromagnetic chuck; The guide rod is elastically connected to the detection base via an elastic element. A detection unit is located at the end of the guide rod; The detector is connected to the detection base; When the rotary clamp releases the workpiece, the chuck pushes the guide rod to move.

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