Hydraulic clamp with calibration structure for four-axis rotary table

Abstract

The utility model relates to the technical field of hydraulic clamps, in particular to a hydraulic clamp with a calibration structure for a four-axis rotary table, which comprises a base, a cavity is arranged in the base, and two connecting grooves are arranged in the base; a cavity is formed in an opening in the side wall of each plate, and a clamping block is slidably connected to the interior of each cavity. The ends of the two clamping blocks make contact with pressure sensors on the side walls of the two movable plates, pressure output by the clamping blocks is detected through the pressure sensors, when it is found that air exists in the corresponding cavities, the air in the corresponding cavities is exhausted by opening valves in the corresponding exhaust pipes, and when the pressure output by the two clamping blocks is consistent, the air in the corresponding cavities is exhausted by opening valves in the corresponding exhaust pipes. When the two clamping blocks are clamped, exhausting of the interiors of the corresponding cavities is stopped, so that the outlet speed pressure of the two clamping blocks is calibrated, it can be ensured that the two clamping blocks clamp an object at the same speed and force through calibration of the clamping blocks, and therefore the clamping stability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic fixture technical field especially relates to a four -axis rotary table hydraulic fixture with calibration structure. BACKGROUND

[0002] Four -axis rotary table hydraulic fixture is a kind of high-precision work clamping device, mainly used in four -axis rotary table or other need high-precision, high stiffness clamping occasion.This fixture is driven by hydraulic pressure, can realize the stable clamping and accurate positioning to workpiece, to meet the metal forming, welding, precision machining and other various process requirements.

[0003] Many existing four -axis rotary table hydraulic fixture lacks calibration function, when the sliding speed or clamping force of clamping block is inconsistent, operating personnel need to adjust and calibrate manually throughout, they need to determine whether the sliding speed and clamping force of clamping block meet the requirements by observation, measurement and repeated test, this process is not only cumbersome, but also prone to error, because human factors (such as fatigue, misjudgment etc.) can affect the accuracy of calibration. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a four -axis rotary table hydraulic fixture with calibration structure, realize the effect of convenient calibration by the device, to solve the problem of inconvenient calibration in prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A four -axis rotary table hydraulic fixture with calibration structure, including base, the inside of base is provided with cavity, the inside of base is provided with two connecting grooves, the connecting groove is communicated with cavity, the upper end of base is provided with two recesses, the recess is rotatably connected with movable plate in the inside;Two board blocks, the board block is located on the upper end of base, the side wall opening of board block is provided with chamber, the lower end of board block is provided with slot, the upper end of slot is communicated with the inside of chamber, the lower end of slot is communicated with the end of connecting groove, the inside of chamber is slidably connected with clamping block.

[0007] Preferably, the inside of base is provided with liquid storage cavity, the inside of base is fixedly connected with oil pump, one end of oil pump is communicated with cavity, the other end of oil pump is communicated with the inside of liquid storage cavity.

[0008] Preferably, the inside of base is fixedly connected with motor, the inside of base is rotatably connected with two gears, the output end of motor is fixedly connected with the side wall of one gear.

[0009] Preferably, the two gears are engaged, and the side wall of the gear is fixedly connected with the side wall of the movable plate.

[0010] Preferably, the plate side wall is fixedly connected with an exhaust pipe in communication with the chamber interior, and a valve is arranged in the exhaust pipe.

[0011] Preferably, the clamping block side wall is fixedly connected with a protrusion, and the protrusion side wall is attached to the chamber inner wall.

[0012] Compared with the prior art, the hydraulic clamp has the following advantages:

[0013] 1. After the two movable plates are vertically arranged, the two clamping blocks are relatively slid, the end portions of the two clamping blocks are in contact with the pressure sensors on the side walls of the two movable plates, the output pressure of the clamping blocks is detected through the pressure sensors, then the operator checks whether there is air in the corresponding chamber interior corresponding to the clamping block with a slower output speed, when it is found that there is air in the corresponding chamber interior, the valve in the corresponding exhaust pipe is opened to discharge the air in the corresponding chamber interior, and the output pressure of the two clamping blocks is monitored in real time through the pressure sensors, when the output pressures of the two clamping blocks are consistent, the corresponding chamber interior is stopped from being exhausted, so that the output pressures of the two clamping blocks are calibrated, and through the calibration of the clamping blocks, it can be ensured that the two clamping blocks clamp the object at the same speed and force, thereby improving the stability of clamping.

[0014] 2. When the clamping blocks do not need to be calibrated, one of the gears is reversely rotated through the motor, the other gear is reversely rotated, and the gears drive the movable plates to rotate, so that the movable plates are rotated into the grooves from the vertical state to the horizontal state, the movable plates and the pressure sensors are accommodated and hidden through the grooves, and through the accommodation and hiding of the movable plates, the risk of accidental injury of the operator can be reduced, and the safety of the equipment can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A front view external structure schematic diagram of the hydraulic clamp with the calibration structure for the four-axis turntable is provided.

[0016] Figure 2 A top view external structure schematic diagram of the hydraulic clamp with the calibration structure for the four-axis turntable is provided.

[0017] Figure 3 A front view cross-sectional structure schematic diagram of the hydraulic clamp with the calibration structure for the four-axis turntable is provided.

[0018] Figure 4 A side view cross-sectional structure schematic diagram of the hydraulic clamp with the calibration structure for the four-axis turntable is provided.

[0019] Figure 5 A top view cross-sectional structure schematic diagram of the hydraulic clamp with the calibration structure for the four-axis turntable is provided.

[0020] In the figure: 001 base, 101 liquid storage cavity, 102 oil pump, 103 cavity, 104 connecting groove, 105 groove, 106 movable plate, 107 motor, 108 gear, 002 plate, 201 chamber, 202 slot, 203 exhaust pipe, 204 clamping block, 205 protruding block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0022] Reference Figures 1-5The utility model provides a hydraulic clamp with calibration structure for four -axis rotary table, including base 001, be provided with cavity 103 in the base 001, be provided with two connecting grooves 104 in the base 001, and connecting groove 104 communicates with cavity 103, and the upper end of base 001 is provided with two recesses 105, and the inside rotation of recess 105 is connected with movable plate 106, two slabs 002, slab 002 is located in the upper end of base 001, and the lateral wall of slab 002 is provided with chamber 201, and the lower end of slab 002 is provided with slot 202, and the upper end of slot 202 communicates with the inside of chamber 201, and the lower end of slot 202 communicates with the end of connecting groove 104, and the inside of chamber 201 is slidably connected with clamping block 204, and the lateral wall of movable plate 106 is provided with pressure sensor, and the operator installs base 001 in the specified position of four -axis rotary table, when needing to clamp and fix the article, the hydraulic oil in the inside of cavity 103 is shunted to the inside of two connecting grooves 104, the hydraulic oil in the inside of connecting groove 104 flows to the inside of chamber 201 through slot 202, and the clamping block 204 is driven to slide by hydraulic oil, and the article is clamped and fixed by the relative sliding of two clamping blocks 204, when the sliding speed of two clamping blocks 204 is not uniform and needs to be calibrated, movable plate 106 rotates in the inside of recess 105, rotates from horizontal to vertical, the rotating direction of two movable plates 106 is opposite, when movable plate 106 rotates vertically, the lateral wall of movable plate 106 is attached to the inner wall of recess 105, then two clamping blocks 204 slide relatively, the end of two clamping blocks 204 contacts the pressure sensor of the lateral wall of two movable plates 106, detects the pressure output of clamping block 204 by pressure sensor, prevents the clamping block 204 that the sliding speed is faster from continuing to slide by movable plate 106, makes two clamping blocks 204 keep in the equidistance sliding position after sliding by two movable plates 106, then the operator checks whether there is air in the inside of the chamber 201 corresponding to the clamping block 204 that the sliding speed is slower, when finding that the inside of corresponding chamber 201 has air, discharges the air in the inside of corresponding chamber 201, the output pressure of two clamping blocks 204 is monitored in real time by pressure sensor, when the output pressure of two clamping blocks 204 is consistent, stop discharging the air in the inside of corresponding chamber 201, thereby calibrating the output pressure of two clamping blocks 204.

[0023] The inside of base 001 is provided with liquid storage cavity 101, and oil pump 102 is fixedly connected in the inside of base 001, one end of oil pump 102 communicates with cavity 103, and the other end of oil pump 102 communicates with the inside of liquid storage cavity 101, and the hydraulic oil in the inside of liquid storage cavity 101 is delivered to the inside of cavity 103 by oil pump 102.

[0024] Motor 107 is fixedly connected in the inside of base 001, two gear wheels 108 are rotatably connected in the inside of base 001, and the output end of motor 107 is fixedly connected with the lateral wall of one of gear wheels 108, and one of gear wheels 108 is driven to rotate by motor 107.

[0025] Two gears 108 are engaged, and the side walls of the gears 108 are fixedly connected with the side walls of the movable plates 106; when one of the gears 108 rotates, the other gear 108 rotates in the opposite direction through the engagement of the two gears 108, and at the same time, the gears 108 drive the movable plates 106 to rotate.

[0026] The side wall of the plate block 002 is fixedly connected with the exhaust pipe 203, the exhaust pipe 203 is in communication with the inside of the chamber 201, and the inside of the exhaust pipe 203 is provided with a valve; by opening the valve in the inside of the exhaust pipe 203, the air in the inside of the chamber 201 is discharged.

[0027] The side wall of the clamping block 204 is fixedly connected with the protrusion 205, and the side wall of the protrusion 205 is attached to the inner wall of the chamber 201; through the arrangement of the protrusion 205, after the clamping block 204 slides to the inside of the chamber 201, there is a certain gap between the side wall of the clamping block 204 and the chamber 201, so that the hydraulic oil can push the clamping block 204 to slide subsequently.

[0028] In the utility model, when it is necessary to clamp and fix the object, the hydraulic oil in the inside of the storage cavity 101 is delivered to the inside of the cavity 103 through the oil pump 102, the hydraulic oil in the inside of the cavity 103 is shunted to the inside of the two connecting grooves 104, the hydraulic oil in the inside of the connecting grooves 104 flows to the inside of the chamber 201 through the slot 202, the clamping block 204 is pushed to slide by the hydraulic oil, and the object is clamped and fixed by the two oppositely sliding clamping blocks 204.

[0029] When the sliding speeds of the two clamping blocks 204 need to be calibrated, one of the gears 108 is driven to rotate by the motor 107, the other gear 108 rotates in the opposite direction, and at the same time, the gears 108 drive the movable plates 106 to rotate; the movable plates 106 rotate in the grooves 105 from the horizontal direction to the vertical direction, the rotating directions of the two movable plates 106 are opposite, and when the movable plates 106 rotate vertically, the side walls of the movable plates 106 are attached to the inner walls of the grooves 105.

[0030] After the two movable plates 106 are vertically moved, the two clamping blocks 204 are relatively slid, the ends of the two clamping blocks 204 are in contact with the pressure sensors on the side walls of the two movable plates 106, the pressure output by the clamping blocks 204 is detected through the pressure sensors, meanwhile, the movable plates 106 prevent the clamping blocks 204 from continuing to slide at a high speed, the two clamping blocks 204 are kept at the equidistant sliding-out positions after being slid out through the two movable plates 106, then the operator checks whether there is air in the corresponding cavity 201 of the clamping block 204 with a low speed, when it is found that the corresponding cavity 201 has air, the air in the corresponding cavity 201 is discharged by opening the valve in the corresponding exhaust pipe 203, the output pressure of the two clamping blocks 204 is monitored in real time through the pressure sensors, when the output pressures of the two clamping blocks 204 are consistent, the corresponding cavity 201 is stopped from being exhausted, so that the output pressure of the two clamping blocks 204 is calibrated.

[0031] After the clamping blocks 204 are calibrated, the oil pump 102 is reversely operated to suck the cavity 103, a negative pressure is formed in the cavity 103 through the suction, the hydraulic oil in the cavity 201 flows into the cavity 103 through the slot 202 and the connecting groove 104, then the hydraulic oil in the cavity 103 is pumped into the storage cavity 101 by the oil pump 102, in this process, the clamping blocks 204 slide into the cavity 201 under the action of the negative pressure, until the clamping blocks 204 completely slide into the cavity 201, the oil pump 102 stops operating.

[0032] When the clamping blocks 204 do not need to be calibrated, one of the gears 108 is reversely driven by the motor 107, the other gear 108 is reversely rotated, meanwhile, the gears 108 drive the movable plates 106 to rotate, so that the movable plates 106 are rotated into the recess 105, from vertical to horizontal, the movable plates 106 and the pressure sensors are hidden by the recess 105.

[0033] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A hydraulic clamp for a four-axis rotary table having a calibration structure, characterized by, Include The base (001) is internally provided with a cavity (103), the base (001) is internally provided with two connecting grooves (104), the connecting grooves (104) are communicated with the cavity (103), the upper end of the base (001) is provided with two grooves (105), the movable plate (106) is rotatably connected in the groove (105); Two plate blocks (002) are arranged on the upper end of the base (001), the cavity (201) is arranged in the side wall of the plate block (002), the slot (202) is arranged at the lower end of the plate block (002), the upper end of the slot (202) is communicated with the inside of the cavity (201), the lower end of the slot (202) is communicated with the end of the connecting groove (104), the clamping block (204) is slidably connected in the cavity (201).

2. The hydraulic clamp with a calibration structure for a four-axis rotary table according to claim 1, characterized in that, The inside of the base (001) is provided with a liquid storage cavity (101), the oil pump (102) is fixedly connected in the inside of the base (001), one end of the oil pump (102) is communicated with the cavity (103), the other end of the oil pump (102) is communicated with the inside of the liquid storage cavity (101).

3. The hydraulic clamp with a calibration structure for a four-axis rotary table according to claim 1, characterized in that, The motor (107) is fixedly connected in the inside of the base (001), the two gears (108) are rotatably connected in the inside of the base (001), the output end of the motor (107) is fixedly connected with one of the side walls of the gear (108).

4. The hydraulic clamp with a calibration structure for a four-axis rotary table according to claim 3, characterized in that, The two gears (108) are engaged, the side wall of the gear (108) is fixedly connected with the side wall of the movable plate (106).

5. The hydraulic clamp with a calibration structure for a four-axis rotary table according to claim 1, characterized in that, The exhaust pipe (203) is fixedly connected through the side wall of the plate block (002), the exhaust pipe (203) is communicated with the inside of the cavity (201), the valve is arranged in the inside of the exhaust pipe (203).

6. The hydraulic clamp with a calibration structure for a four-axis rotary table according to claim 1, characterized in that, The convex block (205) is fixedly connected with the side wall of the clamping block (204), the side wall of the convex block (205) is attached to the inner wall of the cavity (201).

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