CN210451014U - Full hydraulic control tailstock - Google Patents
Full hydraulic control tailstock Download PDFInfo
- Publication number
- CN210451014U CN210451014U CN201920958642.0U CN201920958642U CN210451014U CN 210451014 U CN210451014 U CN 210451014U CN 201920958642 U CN201920958642 U CN 201920958642U CN 210451014 U CN210451014 U CN 210451014U
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- tailstock
- hydraulic control
- hydraulic
- main shaft
- shell
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Abstract
The utility model relates to a full hydraulic control tailstock, which solves the technical problems of high labor intensity and low working efficiency when the main shaft center on the tailstock of the existing operation machine tool works, and comprises a tailstock shell, a tailstock main shaft, a center, a hydraulic cylinder, an oil cylinder, an L-shaped stop block, a hexagon nut and a hydraulic motor driving mechanism, wherein the tailstock main shaft is connected with the tailstock shell in a sliding way, the center is connected with an inner hole of the tailstock main shaft, the hydraulic cylinder is fixedly connected with the tailstock shell, and a piston rod of the hydraulic cylinder is connected with the tailstock main shaft; the oil cylinder is fixed inside the tailstock shell, a piston rod of the oil cylinder penetrates through the L-shaped stop block, and a hexagonal nut is sleeved on an outer thread of the piston rod of the oil cylinder; the upper end guide part of the L-shaped stop block is embedded in the elongated slot of the tail frame shell; the hydraulic motor driving mechanism comprises a hydraulic motor, a rack and a rotating gear, the hydraulic motor is fixed on the tailstock shell, the rotating gear is connected with an output shaft of the hydraulic motor through a coupler, and the rotating gear is meshed with the rack. The utility model discloses extensively be used for the lathe field.
Description
Technical Field
The utility model relates to a hydraulic control field of lathe particularly, relates to an all hydraulic control tailstock.
Background
At present, a main shaft center advancing and retreating structure arranged on a machine tool tailstock performs micro-feeding to tightly push a workpiece after the tailstock integrally moves to an effective distance. The common method is that the center of the main shaft extends out to tightly prop against a workpiece by relying on the disc spring force in a normal state, the moment generated by turning the handle is acted on a shifting fork, and the shifting fork drives a sleeve to compress a disc spring to loosen the workpiece. The driving mode is time-consuming, labor-consuming and low in efficiency; when a large workpiece is clamped, a single person is specially responsible for wrenching the handle; the jacking force of the disc spring is uncontrollable when the workpiece is clamped every time, the grinding precision is influenced, and the workpiece is bent and deformed due to overlarge jacking force; the dangerous situation that the workpiece falls can be caused by the excessively small jacking force.
In the process of grinding parts by the grinding machine, the tail frame and the workbench are required to be relatively fixed, and the fixation is realized by friction clamping. The conventional method is that a long screw is arranged on a tail frame, and the lower end of the screw is connected with a stop block. The upper end of the screw rod is provided with a cover-shaped nut, and the cover-shaped nut is screwed by a spanner, so that the tightness between the stop block of the tailstock and the workbench can be realized. The driving mode is time-consuming, labor-consuming and low in efficiency; the power of holding tightly between dog and the workstation side is along with manpower locking torque change, leads to the workstation side to appear the indentation of level unevenness gradually, and the frictional contact face between dog and the workstation reduces, leads to the tailstock not tight of lock, influences the grinding precision, and the dangerous condition that produces the work piece even and fall takes place.
The moving of the whole tail frame is realized by manpower when workpieces with different lengths are clamped. The conventional method is that a transmission shaft of a bearing is arranged on a tail frame shell, the upper end of a shaft is an outer hexagon, the lower end of the shaft is a gear, and a rack is arranged on the side edge of a workbench. When the whole tailstock moves along the workbench, the wrench is needed to twist the outer hexagon at the upper end of the transmission shaft to rotate the transmission shaft, the gear at the lower end is meshed with the rack on the workbench, and the purpose that the whole tailstock moves along the workbench is achieved. The overweight tailstock needs two sets of the driving devices, and two rotating shafts are screwed through the cooperation of two persons and are meshed with the same rack to move. The driving mode is time-consuming, labor-consuming and low in efficiency, and the gear rack transmission pair is quickly abraded due to the fact that the driving mode is manually stopped and stopped.
Disclosure of Invention
The utility model discloses be exactly in order to solve the top during operation of main shaft on the current operation lathe tailstock, high, the low technical problem of work efficiency of intensity of labour provides a full hydraulic control tailstock that reduces intensity of labour, improves work efficiency, provides system stability and security.
The utility model provides a full hydraulic control tailstock, which comprises a tailstock shell, a tailstock main shaft, a top, a hydraulic cylinder, an oil cylinder, an L-shaped stop block, a hexagon nut and a hydraulic motor driving mechanism,
the tailstock main shaft is connected with the tailstock shell in a sliding mode, an inner hole is formed in the tailstock main shaft, the center is connected with the inner hole of the tailstock main shaft, a cylinder body of the hydraulic cylinder is fixedly connected with the tailstock shell, and a piston rod of the hydraulic cylinder is fixedly connected with the tailstock main shaft;
the oil cylinder is fixed inside the tailstock shell, and a piston rod of the oil cylinder penetrates through the L-shaped stop block; the piston rod of the oil cylinder is provided with an external thread, and the hexagonal nut is sleeved on the external thread of the piston rod of the oil cylinder; the upper end guide part of the L-shaped stop block is embedded in the elongated slot of the tail frame shell;
the hydraulic motor driving mechanism comprises a hydraulic motor, a motor support, a coupler, a rack and a rotating gear, the hydraulic motor is fixed on the tailstock shell through the motor support, the rotating gear is connected with an output shaft of the hydraulic motor through the coupler, and the rotating gear is meshed with the rack.
Preferably, there are two sets of hydraulic motor drive mechanisms.
Preferably, the tip is in taper fit with the inner bore of the tailstock main shaft.
Preferably, the full-hydraulic control tailstock comprises a valve bank, the valve bank comprises a three-position four-way electromagnetic reversing valve, a two-way hydraulic control one-way valve, a pressure reducing valve, a one-way throttle valve and an operation panel, the two-way hydraulic control one-way valve is connected with the three-position four-way electromagnetic reversing valve, and the one-way throttle valve is connected with the two-way hydraulic control one-way valve.
Preferably, the valve block further comprises a pressure detection switch.
The utility model also provides a machine tool, including inclined plane workstation and full hydraulic control tailstock, full hydraulic control tailstock includes tailstock casing, tailstock main shaft, top, pneumatic cylinder, hydro-cylinder, L type dog, hexagon nut and hydraulic motor actuating mechanism, tailstock main shaft and tailstock casing sliding connection, the tailstock main shaft is equipped with the hole, the top is connected with the hole of tailstock main shaft, the cylinder body of pneumatic cylinder and tailstock casing fixed connection, the piston rod of pneumatic cylinder and tailstock main shaft fixed connection; the oil cylinder is fixed inside the tailstock shell, and a piston rod of the oil cylinder penetrates through the L-shaped stop block; the piston rod of the oil cylinder is provided with an external thread, and the hexagonal nut is sleeved on the external thread of the piston rod of the oil cylinder; the upper end guide part of the L-shaped stop block is embedded in the elongated slot of the tail frame shell; the hydraulic motor driving mechanism comprises a hydraulic motor, a motor support, a coupler, a rack and a rotating gear, the hydraulic motor is fixed on the tailstock shell through the motor support, the rotating gear is connected with an output shaft of the hydraulic motor through the coupler, and the rotating gear is meshed with the rack; the rack of the full hydraulic control tailstock is fixedly connected with the inclined plane workbench, and the inclined plane at the lower side of the tailstock shell of the full hydraulic control tailstock is contacted with the inclined plane workbench; the lower end of an L-shaped check block of the full hydraulic control tailstock is contacted with the side edge of the inclined plane workbench.
Preferably, there are two sets of hydraulic motor drive mechanisms.
Preferably, the tip is in taper fit with the inner bore of the tailstock main shaft.
The utility model has the advantages that:
the working efficiency is improved, the labor intensity of operators is reduced, and the grinding precision, the grinding stability and the equipment safety are improved;
when the center is tightly pressed, the pressure is constant, the pressure value is adapted to the working condition adjusting pressure valve according to the workpiece, and when the pressure is insufficient, an alarm prompt is provided; the tightness between the tailstock and the workbench is synchronously driven by two sets of single-action single-rod hydraulic cylinders which are symmetrical left and right, the pressure is constant and does not loosen during tensioning, the rigidity of the tailstock can be increased, and an alarm prompt is provided when the pressure is insufficient; the tail frame integrally moves and is synchronously driven by two sets of hydraulic motors which are symmetrical left and right, and the mechanical transmission pair has small abrasion and high efficiency.
The integrated valve group is arranged on the tailstock and close to the execution element, so that the problems of oil volume change and leakage caused by the long pipeline are solved; the oil tank and the power source are shared with other functions (such as oil cylinder driving of a workbench, static pressure of a guide rail and the like) on the machine tool, so that the occupied area is reduced, and the energy is saved.
The tailstock hydraulic control panel is arranged right in front of the tailstock body shell, and a main pressure oil way required by the tailstock hydraulic control integrated valve group is switched and communicated through a button on the control panel; the pressure regulating valve and the pressure gauge are both arranged on the tail frame shell, so that the regulation and the monitoring are convenient.
Further features of the invention will be apparent from the description of the embodiments which follows.
Drawings
FIG. 1 is a front view of a hydraulic tailstock;
FIG. 2 is a right side view of the hydraulic tailstock;
FIG. 3 is a left side view of the hydraulic tailstock;
FIG. 4 is a schematic diagram of an integrated valve block;
FIG. 5 is a schematic view of a tailstock hydraulic control operating panel;
FIG. 6 is a schematic diagram of a common hydraulic station;
fig. 7 is a system control timing chart.
The symbols in the drawings illustrate that:
1. the hydraulic control system comprises a slope workbench, 2 parts of racks, 3 parts of transmission gears, 4 parts of couplers, 5 parts of motor supports, 6 parts of hydraulic motors, 7 parts of a tail frame shell, 8 parts of a rear end cover, 9 parts of guide columns, 10 parts of a front end cover, 11 parts of hexagonal nuts, 12 parts of L-shaped stop blocks, 13 parts of piston rods, 14 parts of oil cylinders, 15 parts of a tail frame hydraulic control operation panel, 16 parts of an electric junction box, 17 parts of hydraulic cylinders, 18 parts of hydraulic rods, 19 parts of a tail frame main shaft, 20 parts of center tips, 21 parts of pressure detection switches, 22 parts of one-way throttle valves, 23 parts of pressure reducing valves, 24 parts of pressure gauges, 25 parts of two-way hydraulic control one-way valves, 26 parts of three-position four-way electromagnetic reversing valves, 27.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description of the preferred embodiments with reference to the accompanying drawings.
The embodiment discloses a full hydraulic control tailstock for a cylindrical grinding machine, wherein a full hydraulic control system is adopted for the advancing, retreating, tightness and moving functions of a main shaft center of the tailstock.
As shown in figure 2, the advance and retreat of the tailstock main shaft center are driven by a double-acting single-rod hydraulic cylinder. The tailstock main shaft 19 is arranged in the tailstock shell 7, a sliding groove is formed in the outer side of the tailstock main shaft 19 along the length direction, the guide post 9 is connected with the tailstock shell 7, the guide post 9 is embedded into the sliding groove of the tailstock main shaft 19, and the tailstock main shaft 19 can slide left and right in the tailstock shell 7 along the guide post 9. The center 20 is arranged in the tailstock main shaft 19, and the center 20 is in taper fit with an inner hole of the tailstock main shaft 19. The cylinder body of the hydraulic cylinder 17 is fixedly connected with the tail frame shell 7; a piston rod 18 in the hydraulic cylinder 17 is fixedly connected with a tailstock main shaft 19.
The operation process comprises the following steps: referring to fig. 4, 5 and 6, the one-way throttle valve 22 is connected to the hydraulic cylinder 17, the two-way pilot-operated check valve 25 is connected to the one-way throttle valve 22, the three-position four-way electromagnetic directional valve 26 is connected to the two-way pilot-operated check valve 25, and the three-position four-way electromagnetic directional valve 26 is connected to the hydraulic station 29 through the pressure reducing valve 23; when the tailstock main shaft center needs to advance/retreat, firstly, a tailstock hydraulic control opening/closing button on the tailstock hydraulic control operation panel 15 is clicked, and the YV1 of the two-position four-way electromagnetic reversing valve 27 is electrified to enable a tailstock main oil path to be communicated; then clicking a main shaft forward and backward button on the tailstock hydraulic control operation panel 15, and electrifying YV2 or YV3 corresponding to the three-position four-way electromagnetic reversing valve 26 to enable the center to move left/right; after the operation is completed, a tailstock hydraulic control start/stop button on the tailstock hydraulic control operation panel 15 is clicked, YV1 of the two-position four-way electromagnetic reversing valve 27 is powered off, main oil supply of tailstock hydraulic control is cut off, and the locking is realized through the two-way hydraulic control one-way valve 25. When the pressure of the advancing and tightening of the tailstock main shaft center is insufficient, the SP1 detection of the pressure detection switch 21 (connected to a pipeline between the hydraulic cylinder 17 and the one-way throttle valve 22) sends a signal to an external PLC controller, and the PLC controller enables the corresponding low-pressure alarm lamp A on the tailstock hydraulic control operation panel 15 to be kept normally on (as shown in figure 5).
As shown in figures 1 and 3, the loosening/clamping between the tailstock shell 7 and the inclined plane workbench 1 is synchronously driven by two sets of single-action single-rod hydraulic cylinders which are symmetrical left and right. The single-set structure is as follows: the oil cylinder 14 is fixed inside the tailstock shell 7 through a screw, and a rear end cover 8 and a front end cover 10 with an air hole are arranged at two ends of the oil cylinder 14; a piston rod 13 of the oil cylinder 14 penetrates through the tailstock shell 7 and is concentric with a hole in the L-shaped stop block 12 (namely, the piston rod 13 penetrates through the L-shaped stop block 12); the hexagonal nut 11 is sleeved on the outer thread of the piston rod 13, and the hexagonal nut 11 is rotated to enable the L-shaped check block 12 to be attached to the side edge of the tailstock shell 7; the upper end of the L-shaped stop block 12 is inserted into the elongated slot of the tailstock shell 7 in a guiding way to limit the rotation of the L-shaped stop block 12; the lower end of the L-shaped stopper 12 is in contact with the side of the ramp table 1. It should be noted that the oil cylinder 14, the L-shaped stopper 12, and the hexagonal nut 11 are not limited to one set, and two or more sets may be installed.
The operation process comprises the following steps: when the tailstock and the workbench need to be loosened/clamped, firstly, a tailstock hydraulic control start/stop button on a tailstock hydraulic control operation panel 15 is clicked, and the YV1 of the two-position four-way electromagnetic reversing valve 27 is electrified to connect a main oil path of the tailstock; clicking a tailstock loosening/clamping button on the tailstock hydraulic control operation panel 15, and electrifying YV4 or YV5 corresponding to the three-position four-way electromagnetic reversing valve 26 to loosen/clamp the tailstock; after the operation is completed, a tailstock hydraulic control start/stop button on the tailstock hydraulic control operation panel 15 is clicked, YV1 of the two-position four-way electromagnetic reversing valve 27 is powered off, main oil supply of tailstock hydraulic control is cut off, and the locking is realized through the two-way hydraulic control one-way valve 25. When the clamping pressure between the tailstock and the workbench is insufficient, the SP2 detection of the pressure detection switch 21 (connected to the pipeline between the oil cylinder 14 and the one-way throttle valve 22) sends a signal to an external PLC controller, and the PLC controller causes the corresponding low-pressure warning lamp B on the tailstock hydraulic control operation panel 15 to be kept normally on (see fig. 5).
As shown in the figures 1 and 2, the tail stock is driven by two sets of hydraulic motors which are symmetrical left and right in the whole movement process. The single-set structure is as follows: the hydraulic motor 6 is fixed on the tailstock shell 7 through the motor support 5, the output shaft of the hydraulic motor 6 is connected with the upper shaft end of the rotating gear 3 through the coupler 4, and the two rotating shafts are radially fixed and locked through the fastening screws of the coupler 4. The gear at the lower end of the rotating gear 3 is meshed with the rack 2, the rack 2 is fixed on the side of the inclined plane workbench 1 through a screw, and the inclined plane at the lower side of the tailstock shell 7 is contacted with the inclined plane workbench 1.
The operation process comprises the following steps: when the whole tailstock needs to move left/right, firstly clicking a tailstock hydraulic control start/stop button on a tailstock hydraulic control operation panel 15, and electrifying YV1 of the two-position four-way electromagnetic directional valve 27 to connect a main oil path of the tailstock; clicking the left button and the right button of the tailstock moving motor on the tailstock hydraulic control operation panel 15, and electrifying YV6 or YV7 corresponding to the three-position four-way electromagnetic reversing valve 26 to enable the tailstock to integrally move left/right; after the operation is completed, the tailstock hydraulic control start/stop button on the tailstock hydraulic control operation panel 15 is clicked, the YV1 of the two-position four-way electromagnetic reversing valve 27 is powered off, the main oil supply of the tailstock hydraulic control is cut off, and the locking is realized by the two-way hydraulic control one-way valve 25 (as shown in figure 5).
Each tailstock hydraulic control branch is provided with a one-way throttle valve 22 for regulating the speed, a pressure reducing valve 23 for setting the pressure, a two-way hydraulic control one-way valve 25 for locking the position of a moving part, and the pressure condition of each branch is observed at any time through a pressure gauge 24 (as shown in figures 2 and 5); when an accident occurs in the hydraulic control operation process of the tailstock, an emergency stop button on the hydraulic control operation panel 15 of the tailstock is knocked down, and the relevant moving parts of the tailstock are in emergency stop and are locked by the bidirectional hydraulic control one-way valve 25; the electrical cables on the tailstock are connected to the machine tool main box via electrical junction box 16. The electric junction box 16 is installed on the side of the tailstock housing 7, and the tailstock hydraulic control operation panel 15 is installed on the side of the tailstock housing 7.
The one-way throttle valve 22, the pressure reducing valve 23, the pressure gauge 24, the two-way hydraulic control one-way valve 25 and the three-position four-way electromagnetic directional valve 26 are all arranged at the top of the tailstock shell 7.
The technical personnel in the field can understand that the tail stock and the workbench are clamped tightly by adopting a constant pressure, the rigidity of the tail stock is increased, the center of the main shaft of the tail stock is tightly pressed by adopting the constant pressure, and the pressure value is adapted to the working condition adjusting pressure valve according to the workpiece, so that the grinding precision and the stability are greatly improved.
In order to improve the safety of the equipment, a clamping hydraulic cylinder branch between the tailstock and the workbench is additionally provided with a bidirectional hydraulic control one-way valve and a pressure detection switch, and if the clamping force changes, the clamping hydraulic cylinder branch is prompted by a low-pressure alarm lamp of an operation panel; a hydraulic cylinder branch of a tailstock main shaft center tightly supporting a workpiece is additionally provided with a bidirectional hydraulic control one-way valve and a pressure detection switch, and if the pressing force is reduced during workpiece grinding, personal safety is protected through the low-pressure alarm lamp of an operation panel; the operation panel is provided with a scram button, the scram button is knocked down when an accident occurs, and the relevant moving part of the tailstock scrams and is locked in a position.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, as various modifications and variations will be apparent to those skilled in the art.
Claims (6)
1. A full hydraulic control tailstock is characterized by comprising a tailstock shell, a tailstock main shaft, a tip, a hydraulic cylinder, an oil cylinder, an L-shaped stop block, a hexagon nut and a hydraulic motor driving mechanism,
the tail frame main shaft is connected with the tail frame shell in a sliding mode, an inner hole is formed in the tail frame main shaft, the tip is connected with the inner hole of the tail frame main shaft, a cylinder body of the hydraulic cylinder is fixedly connected with the tail frame shell, and a piston rod of the hydraulic cylinder is fixedly connected with the tail frame main shaft;
the oil cylinder is fixed inside the tailstock shell, and a piston rod of the oil cylinder penetrates through the L-shaped stop block; the piston rod of the oil cylinder is provided with an external thread, and the hexagonal nut is sleeved on the external thread of the piston rod of the oil cylinder; the upper end guide part of the L-shaped stop block is embedded in the elongated slot of the tail frame shell;
the hydraulic motor driving mechanism comprises a hydraulic motor, a motor support, a coupler, a rack and a rotating gear, the hydraulic motor is fixed on the tailstock shell through the motor support, the rotating gear is connected with an output shaft of the hydraulic motor through the coupler, and the rotating gear is meshed with the rack.
2. The fully hydraulic control tailstock according to claim 1, wherein the hydraulic motor drive mechanisms are of two sets.
3. The fully hydraulic controlled tailstock according to claim 1, wherein the centre is in a taper fit with the inner bore of the tailstock main shaft.
4. An all-hydraulic control tailstock according to claim 1, 2 or 3, characterized in that the all-hydraulic control tailstock comprises a valve bank, the valve bank comprises a three-position four-way electromagnetic directional valve, a two-way hydraulic control one-way valve, a pressure reducing valve, a one-way throttle valve and an operation panel, the two-way hydraulic control one-way valve is connected with the three-position four-way electromagnetic directional valve, and the one-way throttle valve is connected with the two-way hydraulic control one-way valve.
5. The fully hydraulic control tailstock according to claim 4, wherein the valve block further comprises a pressure detection switch.
6. A machine tool, characterized in that, comprises a bevel workbench and a full hydraulic control tailstock according to any one of claims 1 to 3, wherein a rack of the full hydraulic control tailstock is fixedly connected with the bevel workbench, and a lower side bevel of a tailstock shell of the full hydraulic control tailstock is contacted with the bevel workbench; the lower end of an L-shaped check block of the full hydraulic control tailstock is contacted with the side edge of the inclined plane workbench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920958642.0U CN210451014U (en) | 2019-06-25 | 2019-06-25 | Full hydraulic control tailstock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920958642.0U CN210451014U (en) | 2019-06-25 | 2019-06-25 | Full hydraulic control tailstock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210451014U true CN210451014U (en) | 2020-05-05 |
Family
ID=70441890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920958642.0U Expired - Fee Related CN210451014U (en) | 2019-06-25 | 2019-06-25 | Full hydraulic control tailstock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210451014U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110303173A (en) * | 2019-06-25 | 2019-10-08 | 威海华东数控股份有限公司 | All-hydraulic control tailstock |
-
2019
- 2019-06-25 CN CN201920958642.0U patent/CN210451014U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110303173A (en) * | 2019-06-25 | 2019-10-08 | 威海华东数控股份有限公司 | All-hydraulic control tailstock |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200505 Termination date: 20210625 |
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| CF01 | Termination of patent right due to non-payment of annual fee |