CN219444738U - Grinder tailstock for providing constant ejection force - Google Patents
Grinder tailstock for providing constant ejection force Download PDFInfo
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- CN219444738U CN219444738U CN202320126932.5U CN202320126932U CN219444738U CN 219444738 U CN219444738 U CN 219444738U CN 202320126932 U CN202320126932 U CN 202320126932U CN 219444738 U CN219444738 U CN 219444738U
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- thimble
- tailstock
- sleeve
- horizontal
- grinding machine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The utility model relates to a grinding machine tailstock for providing constant ejection force, which comprises an outer shell, an ejector pin mechanism, an actuating mechanism and a control system, wherein the ejector pin mechanism further comprises an ejector pin pressure sensor, the ejector pin pressure sensor is connected with an ejector pin sleeve, and the ejector pin pressure sensor is used for detecting the pressure born by an ejector pin body; the actuating mechanism is an electrohydraulic servo actuator, and the electrohydraulic servo actuator comprises a body part and a piston rod; the piston rod is connected with the thimble sleeve; the control system comprises a servo driver, the servo driver receives thimble pressure signal feedback of the thimble pressure sensor and piston rod position signal feedback of the electrohydraulic servo actuator, ejection force of the electrohydraulic servo actuator is adjusted according to the thimble pressure signal and the piston rod position signal feedback, and the electrohydraulic servo actuator and the servo driver form a closed-loop constant force output system. The control system controls the actuating mechanism to carry out corresponding output force adjustment after obtaining signal feedback, so that the ejector pin is maintained in a constant ejection force state.
Description
Technical Field
The utility model relates to the technical field of grinding machines, in particular to a grinding machine tailstock for providing constant ejection force.
Background
The grinding machine is a machine tool for grinding a surface of a workpiece using a grinding tool. At present, the grinding machine tailstock mainly has two movements: the grinding machine tailstock moves and the thimble mechanism moves, the grinding machine tailstock moves mainly to enable the thimble device to be close to the workpiece, and the thimble mechanism moves mainly to tightly push the workpiece.
The utility model discloses a roll grinder tailstock hydraulic sleeve device, which comprises a tailstock shell and a sleeve, wherein the sleeve is fixed on the tailstock shell based on a plurality of linear bearings, a hydraulic cylinder for driving the sleeve to slide is also fixed on the tailstock shell, a leather bag type protective sleeve is arranged between the front end of the sleeve and the tailstock shell, a positioning mechanism for preventing the sleeve from rotating is arranged between the sleeve and the tailstock shell, a long positioning strip and a pair of limiting blocks for limiting the rotation of the long positioning strip are respectively arranged on the corresponding surfaces of the sleeve and the tailstock shell, a front end limiting switch for controlling the limiting of the front end of the sleeve and a tail end limiting switch for controlling the limiting of the tail end of the sleeve are respectively arranged between the sleeve and the tailstock shell, the sleeve can conveniently extend excessively and shrink excessively at the front end of the sleeve, the sleeve can move for a long distance, the requirements of rollers with different specifications are met, and the sleeve is driven by the hydraulic cylinder to move, and the control is convenient and reliable. However, after the workpiece is tightly pressed by the thimble mechanism of the roll grinder tailstock, the problem that the force between the thimble mechanism and the workpiece is too large or too small may occur, and the force between the thimble mechanism and the workpiece may also be changed in the grinding process. How to adjust the force between the thimble mechanism and the workpiece to the set size in real time is a technical problem to be solved in the field.
Disclosure of Invention
Therefore, the utility model aims to solve the technical problem that the force between the thimble mechanism and the workpiece is difficult to adjust to the set value in real time in the prior art.
In order to solve the technical problems, the utility model provides a grinding machine tailstock for providing constant ejection force, which comprises a tailstock device, wherein the tailstock device comprises an outer shell, an ejector pin mechanism, an actuating mechanism and a control system, the ejector pin mechanism is movably connected to the outer shell along the horizontal X-axis direction and used for ejecting a workpiece, the ejector pin mechanism comprises an ejector pin sleeve and an ejector pin body, the ejector pin body is connected to the ejector pin sleeve and extends out of the ejector pin sleeve, the actuating mechanism is arranged on the outer shell, and the actuating mechanism is used for driving the ejector pin mechanism to adjust the position along the horizontal X-axis direction;
the thimble mechanism further comprises a thimble pressure sensor, wherein the thimble pressure sensor is connected with the thimble sleeve and is used for detecting the pressure born by the thimble body;
the actuating mechanism is an electrohydraulic servo actuator, the electrohydraulic servo actuator comprises a body part and a piston rod, and the piston rod is connected with the thimble sleeve;
the control system comprises a servo driver, the servo driver receives thimble pressure signal feedback of the thimble pressure sensor and piston rod position signal feedback of the electrohydraulic servo actuator, ejection force of the electrohydraulic servo actuator is adjusted according to the thimble pressure signal and the piston rod position signal feedback, and the electrohydraulic servo actuator and the servo driver form a closed-loop constant force output system.
In one embodiment of the utility model, the thimble sleeve has a sleeve head end facing in the negative direction of the horizontal X-axis and a sleeve tail end facing in the positive direction of the horizontal X-axis, the thimble body is connected in the thimble sleeve and extends out of the sleeve head end, the body portion has a body head end facing in the positive direction of the horizontal X-axis and a body tail end facing in the negative direction of the horizontal X-axis, the piston rod extends out of the body head end, the thimble mechanism, the actuator and the control system are arranged in sequence in the direction of the horizontal Y-axis, and the sleeve tail end is flush with the body head end and is connected to the same connecting plate.
In one embodiment of the utility model, the thimble sleeve is guided by a guide bolt to connect the outer housing.
In one embodiment of the present utility model, the outer housing is provided with a first housing opening, the head end of the sleeve extends out from the first housing opening, the first housing opening is provided with an end cover, and an oil seal is arranged between the end cover and the thimble sleeve.
In one embodiment of the present utility model, the control system further comprises a control panel that displays the real-time fluid pressure in the electro-hydraulic servo actuator and can set a corresponding pressure value according to the desired pressure.
In one embodiment of the utility model, the outer housing is provided with a second housing opening, at which the control panel is mounted.
In one embodiment of the utility model, the device further comprises a sliding rail and an accuracy adjusting mechanism, wherein the tailstock device is installed on the sliding rail, the sliding rail is used for guiding the tailstock device to approach and separate from a workpiece along the horizontal X-axis direction, and the accuracy adjusting mechanism is used for driving the tailstock device to adjust to a set position along the horizontal Y-axis direction and adjusting the tailstock device to a set gesture.
In one embodiment of the utility model, the precision adjusting mechanism comprises an adjusting bolt assembly, the adjusting bolt assembly drives the tailstock device to be adjusted to a set position along the horizontal Y-axis direction, the adjusting bolt assembly comprises two adjusting bolts positioned at different positions along the horizontal Y-axis direction, the adjusting bolts are connected with a sliding table, the sliding table is movably connected to the sliding rail along the horizontal Y-axis direction, and the tailstock device is relatively fixed with the sliding table.
In one embodiment of the present utility model, the first pad adjusting assembly further comprises a first pad adjusting assembly and a second pad adjusting assembly, the first pad adjusting assembly comprises two first pads located at different positions in the horizontal X-axis direction, the two first pads are arranged between the tailstock device and the sliding rail, the second pad adjusting assembly comprises two second pads located at different positions in the horizontal Y-axis direction, and the two second pads are arranged between the tailstock device and the sliding rail.
In one embodiment of the present utility model, the sliding table further comprises a pushing bolt, wherein the pushing bolt is used for pushing the sliding table along the horizontal X-axis direction.
Compared with the prior art, the technical scheme of the utility model has the following advantages: according to the grinding machine tailstock for providing constant ejection force, the ejector pin pressure sensor is arranged on the ejector pin mechanism, the stress condition of the ejector pin mechanism is monitored in real time, and when the stress of the ejector pin mechanism changes, the ejector pin pressure sensor transmits corresponding signals to the control system. The control system controls the actuating mechanism to carry out corresponding output force adjustment after obtaining signal feedback, so that the ejector pin is maintained in a constant ejection force state.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.
FIG. 1 is an external schematic view of a grinding machine tailstock of the present disclosure;
FIG. 2 is an internal schematic view of a grinding machine tailstock of the present disclosure;
FIG. 3 is a schematic view of a thimble mechanism according to the present disclosure;
fig. 4 is a schematic structural view of the precision adjusting mechanism disclosed in the present utility model.
Description of the specification reference numerals: 11. an outer housing; 111. an end cap; 121. a thimble sleeve; 122. a thimble body; 123. a needle pressure sensor; 124. a guide bolt; 131. a fuselage section; 132. a piston rod; 141. a servo driver; 142. a control panel; 15. a connecting plate; 2. a slide rail; 31. an adjusting bolt; 32. a sliding table; 33. a first pad; 34. a second cushion block; 35. and (5) pushing the bolt.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.
Referring to fig. 1 to 4, a tailstock for providing a constant ejection force includes a tailstock device including an outer housing 11, a thimble mechanism movably connected to the outer housing 11 in a horizontal X-axis direction, the thimble mechanism being configured to eject a workpiece, the thimble mechanism including a thimble sleeve 121 and a thimble body 122, the thimble body 122 being connected to the thimble sleeve 121 and extending out of the thimble sleeve 121, the actuator being mounted on the outer housing 11, the actuator being configured to drive the thimble mechanism to adjust a position in the horizontal X-axis direction;
the ejector pin mechanism further comprises an ejector pin pressure sensor 123, the ejector pin pressure sensor 123 is connected with the ejector pin sleeve 121, and the ejector pin pressure sensor 123 is used for detecting the pressure born by the ejector pin body 122;
the actuating mechanism is an electrohydraulic servo actuator, the electrohydraulic servo actuator comprises a body part 131 and a piston rod 132, and the piston rod 132 is connected with the thimble sleeve 121;
the control system comprises a servo driver 141, wherein the servo driver 141 receives thimble pressure signal feedback of the thimble pressure sensor 123 and piston rod position signal feedback of the electrohydraulic servo actuator, and adjusts ejection force of the electrohydraulic servo actuator according to the thimble pressure signal and the piston rod position signal feedback, and the electrohydraulic servo actuator and the servo driver form a closed-loop constant force output system.
The tailstock device is suitable for a numerical control cylindrical grinding machine. The thimble body is a part which props against the tail end of the workpiece during grinding processing, and can prevent the tail end of the workpiece from deflecting during rotation. The electrohydraulic servo actuator is a closed-loop constant force output system. Can provide a certain driving force, and adjust the output force according to the command of the control system, so as to maintain the constant force output of the whole tailstock device.
The outer housing is the base of the tailstock apparatus, providing mounting structure for other parts, and also providing a mounting interface for mounting the entire set of tailstock apparatus in the grinding machine. The thimble sleeve is mounted in the outer housing. The sleeve is of a hollow cylindrical structure, morse taper holes are formed in the sleeve, the taper degree of the taper holes is the same as that of the thimble body, and the thimble body is installed in the thimble sleeve in a combined mode through the taper hole surface. The thimble sleeve can axially reciprocate in the outer shell. In order to prevent the thimble sleeve from deflecting around the central axis in the moving process, a guide groove is formed in the thimble sleeve, and the thimble sleeve only moves linearly in the outer shell by matching with a guide bolt. The fixing surface of the ejector pin pressure sensor is arranged at the tail end of the ejector pin sleeve, and the measuring surface is arranged on the connecting plate 15; the ejector pin pressure sensor can sense the stress change on the ejector pin in real time, and converts the change into an electric signal to be transmitted to the control system. The connecting plate transmits the force of the electrohydraulic servo actuator to the thimble sleeve to drive the thimble sleeve to move.
The electrohydraulic servo actuator (electrohydraulic servo actuator) is a core component in the whole execution system and provides stable and reliable output pressure for the whole system. The electrohydraulic servo actuator is internally provided with key parts such as a servo motor, an oil pump, a piston rod and the like. The servo motor controls the oil pump, uses hydraulic oil as a medium, generates certain pressure and drives a piston rod of the oil pump to do reciprocating linear motion. The piston rod is also provided with a guide mechanism, so that the piston rod cannot angularly deflect during linear motion. The electrohydraulic servo actuator has a position detection function, and can feed back the position state of the piston rod in real time. The signal wire at the tail of the electrohydraulic servo actuator is connected to a servo driver, the servo driver is arranged in an outer shell, the signal feedback of the needle pressure sensor and the position detector is received, and the ejection force of the electrohydraulic servo actuator is adjusted according to the signal feedback, so that the ejection force of the tailstock device can be correspondingly adjusted according to the actual working condition. The electrohydraulic servo actuator body and the controller form a closed-loop constant force output system. The electrohydraulic servo actuator is arranged in the tailstock body. The locking nut is connected with a piston rod and a connecting plate of the electrohydraulic servo actuator, and the electrohydraulic servo actuator is connected with the thimble mechanism.
In the preferred embodiment of the present embodiment, the thimble sleeve 121 has a sleeve head end facing the negative direction of the horizontal X-axis and a sleeve tail end facing the positive direction of the horizontal X-axis, the thimble body 122 is connected to the thimble sleeve and extends out of the sleeve head end, the body portion 131 has a body head end facing the positive direction of the horizontal X-axis and a body tail end facing the negative direction of the horizontal X-axis, the piston rod 132 extends out of the body head end, and the thimble mechanism, the actuator and the control system are sequentially arranged in the direction of the horizontal Y-axis, and the sleeve tail end is aligned with the body head end and connected to the same connecting plate 15.
In the preferred embodiment of the present embodiment, the thimble sleeve 121 is guided and connected to the outer housing 11 by the guide bolt 124.
In the preferred embodiment of the present embodiment, the outer housing 11 is provided with a first housing opening, the head end of the sleeve extends out from the first housing opening, the first housing opening is provided with an end cover 111, and an oil seal is provided between the end cover 111 and the thimble sleeve 121. The oil blanket is installed at sleeve both ends, prevents that the foreign matter from getting into. The protective cover covers all parts at the tail part of the sleeve and prevents foreign matters such as cooling liquid, cutting scraps and the like from entering. The external shell is provided with a lubricating oil hole, and lubricating grease is injected into the friction pair of the sleeve and the external shell at regular time, so that the sleeve can be ejected and retracted smoothly.
In a preferred embodiment of the present embodiment, the control system further includes a control panel 142, and the control panel 142 displays the real-time fluid pressure in the electro-hydraulic servo actuator and can set a corresponding pressure value according to the required pressure. The control panel is a display and operation interface of the whole system. The system has a display panel for displaying the real-time pressure in the electro-hydraulic servo actuator system, and can set the corresponding pressure value according to the required pressure to maintain the system at the constant pressure level.
In the preferred embodiment of the present embodiment, the outer housing 11 is provided with a second housing opening, and the control panel 142 is mounted at the second housing opening.
The preferred implementation manner in this embodiment further includes a sliding rail 2 and an accuracy adjusting mechanism, the tailstock device is mounted on the sliding rail 2, the sliding rail 2 is used for guiding the tailstock device to approach and depart from the workpiece along the horizontal X-axis direction, and the accuracy adjusting mechanism is used for driving the tailstock device to adjust to a set position along the horizontal Y-axis direction and adjusting the tailstock device to a set gesture. The precision adjusting mechanism can finely adjust the position of the tail frame after the tail frame device and the sliding rail are integrally arranged on the machine tool, so that the tail frame center can meet certain position precision requirements in the use process.
In the preferred embodiment of this embodiment, the precision adjusting mechanism includes an adjusting bolt assembly, the adjusting bolt assembly drives the tailstock device to adjust to a set position along the horizontal Y axis direction, the adjusting bolt assembly includes two adjusting bolts 31 located at different positions along the horizontal Y axis direction, the adjusting bolts 31 are connected with a sliding table 32, the sliding table 32 is movably connected to the sliding rail 2 along the horizontal Y axis direction, and the tailstock device is relatively fixed with the sliding table 32.
The preferred embodiment of this embodiment further includes a first pad adjustment assembly, where the first pad assembly includes two first pads 33 located at different positions along the horizontal X-axis, and the two first pads 33 are padded between the tailstock device and the slide rail 2.
The preferred embodiment of this embodiment further includes a second pad adjustment assembly, the second pad assembly including two second pads 34 positioned at different positions in the horizontal Y-axis direction, the two second pads 34 being interposed between the tailstock apparatus and the slide rail 2.
The preferred embodiment of the present embodiment further includes a tightening bolt 35, where the tightening bolt 35 is used to tighten the sliding table 32 along the horizontal X-axis direction.
One piece is arranged at the left and the right of the first cushion block; the front part and the rear part of the second cushion block are respectively provided with a first cushion block; 1 piece (including lock nut) of each of the front and rear parts of the adjusting bolt; a sliding table; the bolt is tightly fixed, and 2 pieces (including a locking nut) are arranged. When the tailstock group is assembled, unavoidable accumulated errors are generated due to the problems of part machining errors, assembly errors and the like, and the precision of the tailstock device is affected. At this time, the precision correction is required by the adjusting element, so that the tailstock meets the use requirement. The slipway is the mounting base of tailstock device, and tailstock device installs on the slipway, and the slipway takes tailstock device to move on the slide rail. The first wedge-shaped mounting block is arranged between the tailstock and the sliding table, the upper surface and the lower surface are attached, and the left surface and the right surface are respectively provided with a piece of wedge-shaped mounting block. When the position deviation of the lifting head of the tail frame center appears on the central axis, the thickness of the first cushion block can be matched and ground, so that the vertical height is adjusted, and the position deviation of the lifting head of the center is eliminated. The second cushion block is arranged between the tailstock and the sliding table, the left surface and the right surface are attached, and the front surface and the rear surface are respectively provided with a piece. When the center of the tailstock swings at the left and right positions on the central axis, the gasket can be worn in a matched mode, adjustment in the left and right directions is achieved, and left and right swinging errors of the center are eliminated. After the adjustment, the boss on the sliding table is tightly propped by the fastening bolt, so that the precision is prevented from being lost in the processing process. The adjusting bolt can realize fine adjustment of the tailstock device in the front-back direction, so that the central axis of the tailstock is coaxial with the central axis of the machine tool headstock.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (10)
1. The grinding machine tailstock comprises a tailstock device, wherein the tailstock device comprises an outer shell, a thimble mechanism, an actuating mechanism and a control system, the thimble mechanism is movably connected to the outer shell along the horizontal X-axis direction and used for propping up a workpiece, the thimble mechanism comprises a thimble sleeve and a thimble body, the thimble body is connected to the thimble sleeve and extends out of the thimble sleeve, the actuating mechanism is mounted on the outer shell, and the actuating mechanism is used for driving the thimble mechanism to adjust the position along the horizontal X-axis direction;
it is characterized in that the method comprises the steps of,
the thimble mechanism further comprises a thimble pressure sensor, wherein the thimble pressure sensor is connected with the thimble sleeve and is used for detecting the pressure born by the thimble body;
the actuating mechanism is an electrohydraulic servo actuator, the electrohydraulic servo actuator comprises a body part and a piston rod, and the piston rod is connected with the thimble sleeve;
the control system comprises a servo driver, the servo driver receives thimble pressure signal feedback of the thimble pressure sensor and piston rod position signal feedback of the electrohydraulic servo actuator, ejection force of the electrohydraulic servo actuator is adjusted according to the thimble pressure signal and the piston rod position signal feedback, and the electrohydraulic servo actuator and the servo driver form a closed-loop constant force output system.
2. The grinding machine tailstock of claim 1, wherein the thimble sleeve has a sleeve head end oriented in a negative direction of the horizontal X-axis and a sleeve tail end oriented in a positive direction of the horizontal X-axis, the thimble body is coupled in the thimble sleeve and extends beyond the sleeve head end, the body portion has a body head end oriented in the positive direction of the horizontal X-axis and a body tail end oriented in the negative direction of the horizontal X-axis, the piston rod extends from the body head end, and the thimble mechanism, the actuator, and the control system are sequentially arranged in the direction of the horizontal Y-axis, the sleeve tail end being aligned with the body head end and coupled to the same web.
3. The grinding machine tailstock for providing a constant ejector force of claim 1, wherein said ejector pin sleeve is guided by guide bolts to said outer housing.
4. The grinding machine tailstock of claim 2, wherein the outer housing has a first housing opening from which the sleeve head end extends, the first housing opening having an end cap with an oil seal therebetween.
5. The grinding machine tailstock of claim 1, wherein the control system further includes a control panel that displays real-time fluid pressure in the electro-hydraulic servo actuator and can set a corresponding pressure value based on a desired pressure.
6. The grinding machine tailstock of claim 5, wherein the outer housing is provided with a second housing opening, the control panel being mounted at the second housing opening.
7. The grinding machine tailstock of claim 1, further comprising a slide rail mounted to the slide rail for guiding the tailstock apparatus toward and away from the workpiece in a horizontal X-axis direction, and a precision adjustment mechanism for driving the tailstock apparatus to adjust to a set position in a horizontal Y-axis direction and to adjust the tailstock apparatus to a set attitude.
8. The grinding machine tailstock for providing a constant ejection force according to claim 7, wherein the precision adjustment mechanism includes an adjustment bolt assembly that drives the tailstock device to adjust to a set position along a horizontal Y-axis direction, the adjustment bolt assembly including two adjustment bolts located at different positions along the horizontal Y-axis direction, the adjustment bolts connecting a slide table movably connected to the slide rail along the horizontal Y-axis direction, the tailstock device being fixed relative to the slide table.
9. The grinding machine tailstock of claim 8, further comprising a first pad adjustment assembly including two first pads located at different positions in a horizontal X-axis direction, the two first pads being sandwiched between the tailstock apparatus and the slide rail, and a second pad adjustment assembly including two second pads located at different positions in a horizontal Y-axis direction, the two second pads being sandwiched between the tailstock apparatus and the slide rail.
10. The grinding machine tailstock of claim 8, further comprising a jack bolt for jack-tightening the slip in a horizontal X-axis direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320126932.5U CN219444738U (en) | 2023-01-12 | 2023-01-12 | Grinder tailstock for providing constant ejection force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320126932.5U CN219444738U (en) | 2023-01-12 | 2023-01-12 | Grinder tailstock for providing constant ejection force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219444738U true CN219444738U (en) | 2023-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320126932.5U Active CN219444738U (en) | 2023-01-12 | 2023-01-12 | Grinder tailstock for providing constant ejection force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219444738U (en) |
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2023
- 2023-01-12 CN CN202320126932.5U patent/CN219444738U/en active Active
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