Hydraulic clamping device of numerical control horizontal rotary table

Abstract

The invention discloses a numerical control horizontal type rotary table hydraulic clamping device which comprises a pressure cylinder plunger, a rotary clamping cylinder body is installed at one end of the pressure cylinder plunger, a main shaft is rotationally connected to the interior of the rotary clamping cylinder body, one end of the main shaft is connected with the output end of the pressure cylinder plunger, the main shaft is sleeved with a thin-wall ring sleeve, and the thin-wall ring sleeve is connected with the output end of the pressure cylinder plunger. A thin-wall ring sleeve is arranged on the outer side wall of the rotary clamping cylinder body, the outer side wall of the thin-wall ring sleeve is connected with the inner side wall of the rotary clamping cylinder body, the thin-wall ring sleeve is filled with a filling material body, and the compressibility of liquid plastic or industrial vaseline used by the filling material body and the elastic deformation principle of the thin-wall ring sleeve are utilized, so that clamping of the rotary table is achieved; due to the fact that acting force is even, the rotary table is not affected by deformation force, high working precision is obtained, the rotary table has the advantages of being simple and reliable in structure, convenient to assemble and innovative in technology, performance and structure, and stability and practicability in the operation process are improved.

Description

Technical Field

[0001] The invention relates to the technical field of machine tool industry, and in particular to a hydraulic clamping device for a numerically controlled horizontal rotary table. Background Art

[0002] The CNC horizontal rotary table is an important component in CNC machining equipment. The working principle of the CNC horizontal rotary table is based on the precise control of the CNC system and the mechanical movement of the rotary mechanism. When the CNC system sends a rotation command to the rotary table, the drive motor starts according to the command and drives the work surface to rotate through the slewing bearing. During the rotation process, the angle sensor (such as a rotary encoder) monitors the rotation angle of the work surface in real time and feeds back the signal to the CNC system. The CNC system compares the feedback signal with the preset target angle, and adjusts the speed and torque of the drive motor through a closed-loop control algorithm so that the work surface can be accurately rotated to the target angle.

[0003] In the prior art, the CNC horizontal turntable clamping device is generally provided with two or three clamping points on the outer ring of the turntable due to structural limitations, and the outer ring of the turntable is clamped. However, the existing outer ring clamping method of the turntable is difficult to uniformly apply the clamping force to the outer ring of the turntable due to structural limitations of the clamping points, and the turntable is easily deformed due to the uneven clamping force application points, thereby affecting the processing accuracy.

[0004] After searching, it is found that a clamping device based on a rotary table is disclosed in Chinese patent documents (publication number: CN218696293U). The utility model relates to a clamping device based on a rotary table, including a table body, a mounting plate with one end extending to the inside of the table is slidably connected to the upper end of the table, a fixing assembly is arranged inside the mounting plate, a clamping assembly is arranged at the upper end of the mounting plate, and the clamping assembly includes a support seat with one end rotatably connected to the upper end of the mounting plate, a placement frame is hinged at the upper end of the support seat, an adjusting screw is hinged at one side of the placement frame, and two hinge blocks are slidably connected to the upper end of the mounting plate. The clamping device based on the rotary table, through the cooperation of the sleeve rod and the telescopic rod, can lift or pull the support seat placed on the support seat to rotate vertically by rotating the sleeve rod, and can hold the telescopic rod by pulling the latch to drive the support seat to rotate vertically on the mounting plate, so that the workpiece fixed in the placement slot can be easily adjusted in azimuth angle, and the workpiece processing efficiency can be improved to achieve the effect of facilitating the adjustment of the processing surface, but there are still the following defects:

[0005] Although the clamping device of the above-mentioned rotary table realizes the cooperation between the sleeve rod and the telescopic rod, and the sleeve rod is rotated to lift or pull the workpiece placed on the support seat for vertical rotation, and the telescopic rod can be held by pulling the pin to drive the support seat to rotate vertically on the mounting plate, so that the workpiece fixed in the placement groove is easy to adjust the azimuth angle, improve the workpiece processing efficiency, and achieve the effect of facilitating the adjustment of the processing surface, but it still has the existing outer ring clamping method of the rotary table. Due to the structural limitation of the clamping point, the clamping force is difficult to act evenly on the outer ring of the rotary table, and the rotary table is easily deformed due to the uneven clamping force application point, thereby affecting the processing accuracy. Summary of the invention

[0006] The object of the present invention is to provide a hydraulic clamping device for a CNC horizontal turntable to solve the problem that the outer ring clamping method of the existing turntable proposed in the above background technology is difficult to act evenly on the outer ring of the turntable due to structural limitations of the clamping point and the turntable is easily deformed due to the uneven clamping force application point, thereby affecting the processing accuracy.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a CNC horizontal turntable hydraulic clamping device, comprising a booster cylinder plunger, one end of the booster cylinder plunger is installed with a rotary clamping cylinder body, and the interior of the rotary clamping cylinder body is rotatably connected with a main shaft, one end of the main shaft is connected to the output end of the booster cylinder plunger, the outside of the main shaft is sleeved with a thin-walled ring sleeve, and the outer wall of the thin-walled ring sleeve is connected to the inner wall of the rotary clamping cylinder body, the interior of the thin-walled ring sleeve is filled with a filling material body, and the outer wall of the main shaft is installed with a turntable body.

[0008] Preferably, a claw is installed at one end of the rotary clamping cylinder.

[0009] Preferably, one end of the rotary clamping cylinder body is connected to one end of a numerically controlled anti-backlash transmission box body, and a booster cylinder plunger is arranged inside the numerically controlled anti-backlash transmission box body.

[0010] Preferably, a plurality of transmission shafts are arranged between the CNC anti-backlash transmission housing and the booster cylinder plunger, and two transmission gears are installed on the outer side walls of the transmission shafts.

[0011] Preferably, the two corresponding transmission shafts are meshed with each other through transmission gears, and the upper transmission gear is meshed with the outer side wall of the booster cylinder plunger.

[0012] Preferably, one end of the transmission shaft at the bottom is connected to the output end of an output source, and the output source is installed on the outer side wall of the CNC anti-backlash transmission box.

[0013] Preferably, the filling material body is an industrial vaseline structure or a liquid plastic structure.

[0014] Preferably, one end of the thin-walled ring is connected to the input end of the filling material plunger.

[0015] Preferably, the front end of the boost cylinder plunger is connected to a clamping oil inlet and a releasing oil inlet.

[0016] Preferably, the clamping oil inlet and the releasing oil inlet are both connected to the hydraulic system pipeline, and the hydraulic system includes an electric motor, an oil pump, an oil filter, a relief valve and a reversing valve.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention utilizes the compressibility of liquid plastic or industrial vaseline available in the filling material body and the elastic deformation principle of the thin-walled ring sleeve to realize the clamping of the turntable. Moreover, due to the uniform force, the turntable is not affected by the deformation force, thereby obtaining higher working accuracy. The above method has a simple, reliable and easy assembly structure, and has innovative features in technology, performance and structure, thus improving the stability and practicality during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the combined parts of the booster cylinder plunger, the rotary clamping cylinder body, the main shaft and the filling material body in the present invention;

[0021] Figure 3 The present invention is a schematic diagram of the combined parts structure of the rotary clamping cylinder, the clamping claws, the thin-walled ring sleeve and the filling material plunger.

[0022] In the figure: 1. Booster cylinder plunger; 2. Rotary clamping cylinder body; 201. Clamping claw; 3. Spindle; 4. Filling material body; 5. Thin-walled ring sleeve; 501. Filling material plunger; 6. Rotary table body; 7. CNC anti-backlash transmission box; 8. Transmission shaft; 9. Transmission gear; 10. Output source; 11. Clamping oil inlet; 12. Release oil inlet. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] Example 1

[0025] See also Figure 1-3The present invention provides a CNC horizontal turntable hydraulic clamping device, including a booster cylinder plunger 1, which is rotatably connected to the inside of a CNC anti-backlash transmission box 7, and a plurality of transmission shafts 8 are evenly spaced inside the CNC anti-backlash transmission box 7, and the outer side walls of the transmission shafts 8 are fixedly connected to two transmission gears 9, and the transmission gears 9 fixedly connected to the outer side walls of the transmission shafts 8 are respectively meshed with the transmission gears 9 corresponding to the transmission shafts 8 arranged above and below, one end of the lower transmission shaft 8 is fixedly connected to the output end of an output source 10, the output source 10 is a servo motor, and the model of the output source 10 is IF16-102-BAB7, and the transmission gear 9 fixedly connected to the outer side wall of the upper transmission shaft 8 is meshed with the connecting gear fixedly connected to the outer side wall of the booster cylinder plunger 1.

[0026] By setting up the output source 10, when the main shaft 3 and other components need to rotate, the output operation is output through the output source 10, thereby driving the transmission shaft 8 connected to its output end to rotate at a uniform speed, and then driving the transmission shaft 8 and the transmission gear 9 to rotate. Because the transmission gears 9 between the connected transmission shafts 8 are meshed with each other, transmission is realized, and finally the booster cylinder plunger 1 is driven to rotate at a uniform speed, so that the booster cylinder plunger 1 drives the main shaft 3 and other components to rotate.

[0027] One end of the booster cylinder plunger 1 is fixedly connected to one end of the main shaft 3, and one end of the main shaft 3 is externally fixedly connected to a turntable body 6, a rotary clamping cylinder body 2 is arranged on the outside of the turntable body 6, and the inside of the rotary clamping cylinder body 2 is movably connected to the turntable body 6, the inner wall of the rotary clamping cylinder body 2 is fixedly connected to the outer wall of the thin-walled ring sleeve 5, and the thin-walled ring sleeve 5 is made of flexible material, and the thin-walled ring sleeve 5 is sleeved on the outside of the main shaft 3, one end of the thin-walled ring sleeve 5 is connected to the input end of a filling material plunger 501 for filling the inside of the thin-walled ring sleeve 5 with a filling material body 4, the filling material body 4 is a liquid plastic structure or an industrial vaseline structure, and a clamping claw 201 is installed on one end of the rotary clamping cylinder body 2.

[0028] By setting the filling material body 4, the thin-walled ring sleeve 5 is filled inside the thin-walled ring sleeve 5, and then the thin-walled ring sleeve 5 is squeezed and the filling material body 4 is compressed, the force is evenly applied to the thin-walled ring sleeve 5, and then the elastic deformation of the thin-walled ring sleeve 5 is utilized to make the thin-walled ring sleeve 5 firmly clamped on the outer wall of the main shaft 3, and because the turntable body 6 is fastened to the main shaft 3, the turntable body 6 is also in a clamped state.

[0029] The front end of the booster cylinder plunger 1 is connected to the input end of the clamping oil inlet 11 and the output end of the release oil inlet 12, and the clamping oil inlet 11 and the release oil inlet 12 are both connected to the hydraulic system pipeline. The hydraulic system consists of an electric motor, an oil pump, an oil filter, a relief valve and a reversing valve.

[0030] By setting the clamping oil inlet 11 and the releasing oil inlet 12, when the turntable body 6 needs to be clamped by the button during use, the clamping oil inlet 11 will start to supply oil to push the booster cylinder plunger 1 to squeeze the filling material body 4 of the thin-walled ring sleeve 5 filling the rotary clamping cylinder body 2, so that the filling material body 4 is compressed, and the force is evenly applied to the thin-walled ring sleeve 5. Then, the elastic deformation of the thin-walled ring sleeve 5 is used to make the thin-walled ring sleeve 5 firmly clamped on the outer wall of the main shaft 3. Since the turntable body 6 is fastened to the main shaft 3, the turntable body 6 is also in a clamping state. At the same time, when the clamp is released by the button, the releasing oil inlet 12 starts to supply oil, withdraws the force on the filling material body 4, and at the same time, the thin-walled ring sleeve 5 rebounds to make the thin-walled ring sleeve 5 loosen the clamping of the main shaft 3, and the turntable is in a clamping and releasing state.

[0031] The specific use process of this embodiment is as follows:

[0032] First, when clamping is required, when the turntable body 6 needs to be clamped by pressing the button, the clamping oil inlet 11 will start to supply oil to push the booster cylinder plunger 1 to squeeze the filling material body 4 of the thin-walled ring sleeve 5 filling the rotary clamping cylinder body 2, so that the filling material body 4 is compressed, and the force is evenly applied to the thin-walled ring sleeve 5. Then, the thin-walled ring sleeve 5 is firmly clamped on the outer wall of the main shaft 3 by utilizing the elastic deformation of the thin-walled ring sleeve 5. In addition, since the turntable body 6 is fastened to the main shaft 3, the turntable body 6 is also in a clamping state;

[0033] Secondly, the workpiece can be limited by the clamping claw 201 during use;

[0034] Afterwards, when the clamp is contacted by the button, the oil inlet 12 is released to start the oil inlet, the force on the filling material body 4 is withdrawn and the thin-walled ring sleeve 5 rebounds to release the clamp on the spindle 3, and the turntable is in the clamp release state;

[0035] Finally, during the operation, when the spindle 3 and other components need to rotate, the operation is output through the output source 10, thereby driving the transmission shaft 8 connected to its output end to rotate at a uniform speed, thereby driving the transmission shaft 8 and the transmission gear 9 to rotate. Since the transmission gears 9 between the connected transmission shafts 8 are meshed with each other, transmission is realized, and finally the booster cylinder plunger 1 is driven to rotate at a uniform speed, so that the booster cylinder plunger 1 drives the spindle 3 and other components to rotate. In this way, a CNC horizontal rotary table hydraulic clamping device is used;

[0036] It should be noted that the present invention is a CNC horizontal turntable hydraulic clamping device, and all components are universal standard parts or components known to those skilled in the art. The structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle part of the device, all the above-mentioned electrical components, which refer to power elements, electrical components, and compatible monitoring computers and power supplies, are connected through wires. The specific connection means should refer to the above-mentioned working principle, and the electrical connection is completed in the working order of each electrical component. The detailed connection means are well known in the art.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic clamping device for a CNC horizontal rotary table, comprising a booster cylinder plunger (1), characterized in that: A rotary clamping cylinder body (2) is installed at one end of the boosting cylinder plunger (1), and the rotary clamping cylinder body (2) is rotatably connected to a main shaft (3) inside. One end of the main shaft (3) is connected to the output end of the boosting cylinder plunger (1). A thin-walled ring sleeve (5) is sleeved on the outside of the main shaft (3), and the outer wall of the thin-walled ring sleeve (5) is connected to the inner wall of the rotary clamping cylinder body (2). The inside of the thin-walled ring sleeve (5) is filled with a filling material body (4), and a turntable body (6) is installed on the outer wall of the main shaft (3).

2. The hydraulic clamping device for a CNC horizontal rotary table according to claim 1 is characterized in that: A clamping claw (201) is installed at one end of the rotary clamping cylinder (2).

3. The hydraulic clamping device for a CNC horizontal rotary table according to claim 1 is characterized in that: One end of the rotary clamping cylinder body (2) is connected to one end of a numerical control backlash elimination transmission box body (7), and a booster cylinder plunger (1) is arranged inside the numerical control backlash elimination transmission box body (7).

4. The hydraulic clamping device for a CNC horizontal rotary table according to claim 3 is characterized in that: A plurality of transmission shafts (8) are arranged between the numerical control anti-backlash transmission box (7) and the booster cylinder plunger (1), and two transmission gears (9) are installed on the outer side walls of the transmission shafts (8).

5. The hydraulic clamping device for a CNC horizontal rotary table according to claim 4 is characterized in that: The two corresponding transmission shafts (8) are meshed with each other via a transmission gear (9), and the upper transmission gear (9) is meshed with the outer side wall of the boost cylinder plunger (1).

6. The hydraulic clamping device for a CNC horizontal rotary table according to claim 4 is characterized in that: One end of the transmission shaft (8) at the bottom is connected to the output end of an output source (10), and the output source (10) is installed on the outer side wall of the numerical control anti-backlash transmission box (7).

7. The hydraulic clamping device for a CNC horizontal rotary table according to claim 1 is characterized in that: The filling material body (4) is an industrial vaseline structure or a liquid plastic structure.

8. The hydraulic clamping device for a CNC horizontal rotary table according to claim 1 is characterized in that: One end of the thin-walled ring sleeve (5) is connected to the input end of the filling material plunger (501).

9. The hydraulic clamping device for a CNC horizontal rotary table according to claim 1 is characterized in that: The front end of the boost cylinder plunger (1) is connected to a clamping oil inlet (11) and a releasing oil inlet (12).

10. The hydraulic clamping device for a CNC horizontal rotary table according to claim 1 is characterized in that: The clamping oil inlet (11) and the releasing oil inlet (12) are both connected to hydraulic system pipelines.

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