CN111774888B

CN111774888B - Static pressure support rotary worktable

Info

Publication number: CN111774888B
Application number: CN202010674841.6A
Authority: CN
Inventors: 李春城; 齐鹏
Original assignee: Hangzhou Danjun Machinery Co ltd
Current assignee: Hangzhou danjun Machinery Co.,Ltd.
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2022-01-14
Anticipated expiration: 2040-07-14
Also published as: CN111774888A

Abstract

The invention relates to the field of workbenches, in particular to a static pressure supporting rotary workbench which comprises a supporting column, a static pressure mechanism, a locking mechanism and a fixing column, wherein the static pressure mechanism is arranged in the supporting column and comprises a fixing shaft, a rotating sleeve ring, pressure oil, a sealing sleeve and balls, one end of the fixing shaft is inserted into an oil groove formed in the supporting column, sufficient pressure oil is filled in the oil groove, the rotating sleeve ring is fixedly sleeved on the fixing shaft, the sealing sleeve used for sealing the oil groove is fixedly installed at the bottom of the rotating sleeve ring, the other end of the fixing shaft extends out of the supporting column and is fixedly connected with the bottom of the workbench, a plurality of balls in rolling connection are embedded in the inner wall of a through groove close to the top in the supporting column, and the balls are in rolling connection with the outer side wall of the fixing shaft. The static pressure support rotary worktable provided by the invention has the advantage of being convenient for clamping the worktable.

Description

Static pressure support rotary worktable

Technical Field

The invention relates to the field of workbenches, in particular to a static pressure support rotary workbench.

Background

Static pressure refers to the pressure on the surface of an object when the object is at rest or moves linearly at a constant speed. At present, when a workpiece is machined on a circular rotary table, the machined workpiece needs to be further machined, the rotary table is supported by static pressure, most of structures of the rotary table are that a rotary part of the rotary table rotates around a central shaft through a rolling bearing, and the rotary part of the rotary table floats through the static pressure bearing, but the rotary part of the rotary table is not easy to fix, so that a phenomenon that the rotary table is easy to rotate when a worker processes the workpiece is caused, and the machining effect is poor. Therefore, it is necessary to provide a static pressure support rotary table to solve the above technical problems.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a static pressure support rotary worktable.

The technical scheme adopted by the invention for solving the technical problems is as follows: a static pressure support rotary worktable comprises a support column, a static pressure mechanism, a locking mechanism and a fixed column, wherein the static pressure mechanism is arranged in the support column and comprises a fixed shaft, a rotating sleeve ring, pressure oil, a sealing sleeve and balls, one end of the fixed shaft is inserted into an oil groove formed in the support column, the oil groove is filled with sufficient pressure oil, the rotating sleeve ring is fixedly sleeved on the fixed shaft, the sealing sleeve used for sealing the oil groove is fixedly installed at the bottom of the rotating sleeve ring, the other end of the fixed shaft extends out of the support column and is fixedly connected with the bottom of the worktable, a plurality of balls in rolling connection are embedded in the inner wall of a through groove close to the top in the support column, and the balls are in rolling connection with the outer side wall of the fixed shaft; the locking mechanism is arranged on the support column and is used for rotationally locking the workbench; the fixed column is fixedly installed at the circle center of the upper surface of the workbench, a plurality of rotating rings which are distributed vertically and are rotatably connected with the fixed column are sleeved on the fixed column, and each rotating ring is provided with a fixing mechanism.

Preferably, locking mechanical system is including rotating seat, curved bar, limiting plate, extension spring and spacing groove, rotate seat fixed mounting on the outer wall of support column, and rotate the seat and rotate the one end rotation connection of being connected through round pin axle and curved bar, the other end welding of curved bar has the arc conical head, rotate the limiting plate that fixed mounting has the slope to set up on the seat, and the inner wall of limiting plate passes through the inside elastic connection of extension spring with the curved bar, the even annular of lower surface of workstation is provided with the spacing groove.

Preferably, the locking mechanism further comprises a limiting sleeve, a pull rod and a pedal, the middle of the outer wall of the curved rod is hinged to the pull rod through a ball hinge, the pedal is horizontally arranged at the bottom of the pull rod, the limiting sleeve is fixedly arranged on the side wall of the supporting column through a support and is vertically arranged, the pull rod penetrates through the limiting sleeve and is in sliding connection with the limiting sleeve, a connecting rod is fixed on the curved rod, a rubber pad is fixed at the end of the connecting rod, and the connecting rod penetrates through the limiting plate.

Preferably, fixed establishment includes thread fixing block, threaded rod, pressure disk and turn-button, insert the threaded rod that is equipped with threaded connection on the thread fixing block, the top fixed mounting of threaded rod has the turn-button, and the bottom of threaded rod installs the pressure disk of rotating the connection.

Preferably, the fixing mechanism further comprises a sleeve, a slide rod and a screw, one end of the sleeve is fixedly installed on the rotating ring and horizontally arranged, one end of the slide rod is inserted into the sleeve and is in sliding connection with the sleeve, the other end of the slide rod is fixedly connected with the thread fixing block, one side, away from the rotating ring, of the sleeve is provided with a thread through hole, the screw in threaded connection is inserted into the thread through hole, and the workbench is provided with an annular operating cavity; and a plurality of locking universal wheels are mounted at the bottom of the supporting column through a support.

Compared with the related art, the static pressure supporting rotary worktable provided by the invention has the following beneficial effects:

(1) the invention provides a static pressure support rotary worktable, which has the advantages that the static pressure mechanism ensures that the worktable has no noise, vibration and impact force when rotating, and the smoothness of the rotation of the worktable is improved by matching with a ball and a rotating sleeve ring; drive the curved bar through the running-board, make the curved bar block to the inside of spacing groove, realize spacing to the workstation, simultaneously, the limiting plate plays good direction and supporting role to the workstation.

(2) The invention provides a static pressure support rotary worktable.A locking mechanism of the invention ensures that the worktable is not easy to rotate randomly when in processing operation, and a pedal is stepped by feet to ensure that a pull rod drives a curved bar to rotate, so that an arc-shaped conical head on the curved bar slides away from a limiting groove at the bottom of the worktable, and the worktable can be rotated; different positions of the machined workpiece can be fixed through the plurality of fixing mechanisms, and the workpiece fixing efficiency of workers is improved.

Drawings

FIG. 1 is a schematic structural view of a preferred embodiment of a hydrostatic bearing rotary table according to the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

fig. 3 is a schematic structural view of the fixing mechanism shown in fig. 1.

Reference numbers in the figures: 1. the device comprises a support column, 2, a static pressure mechanism, 21, a fixed shaft, 22, a rotating sleeve ring, 23, pressure oil, 24, a sealing sleeve, 25, a ball, 3, a workbench, 4, a locking mechanism, 41, a rotating seat, 42, a curved rod, 43, a limiting plate, 44, a tension spring, 45, a limiting sleeve, 46, a pull rod, 47, a pedal plate, 48, a limiting groove, 49, a connecting rod, 49a, a rubber pad, 5, a fixed column, 6, a rotating ring, 7, a fixing mechanism, 71, a sleeve, 72, a sliding rod, 73, a thread fixing block, 74, a screw, 75, a threaded rod, 76, a pressure plate, 77, a rotating button, 8, an operation cavity, 9 and a locking universal wheel.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

Referring to fig. 1, 2 and 3, a static pressure supporting rotary worktable includes a supporting column 1, a static pressure mechanism 2, a locking mechanism 4 and a fixing column 5, the static pressure mechanism 2 is arranged in the support column 1, the static pressure mechanism 2 comprises a fixed shaft 21, a rotating sleeve ring 22, pressure oil 23, a sealing sleeve 24 and balls 25, one end of the fixed shaft 21 is inserted into an oil groove formed in the support column 1, and the oil groove is filled with enough pressure oil 23, the fixed shaft 21 is fixedly sleeved with a rotating lantern ring 22, and the bottom of the rotating sleeve ring 22 is fixedly provided with a sealing sleeve 24 for sealing an oil groove, the other end of the fixed shaft 21 extends out of the supporting column 1 and is fixedly connected with the bottom of the workbench 3, a plurality of rolling balls 25 in rolling connection are embedded in the inner wall of the through groove close to the top in the supporting column 1, and the rolling balls 25 are in rolling connection with the outer side wall of the fixed shaft 21; because the sufficient pressure oil 23 is stored in the oil groove, the static pressure support is realized on the fixed shaft 21, the worktable 3 is noiseless, vibration-free and impact-free when rotating, and the revolving smoothness of the worktable 3 is improved by matching the ball 25 and the rotating sleeve ring 22.

Referring to fig. 1, the locking mechanism 4 is installed on a supporting column 1 and used for rotationally locking a workbench 3, the locking mechanism 4 includes a rotating seat 41, a curved bar 42, a limiting plate 43, a tension spring 44 and a limiting groove 48, the rotating seat 41 is fixedly installed on the outer wall of the supporting column 1, the rotating seat 41 is rotatably connected with one end of the curved bar 42 through a pin shaft, the other end of the curved bar 42 is welded with an arc-shaped conical head, the rotating seat 41 is fixedly installed with the limiting plate 43 which is obliquely arranged, the inner wall of the limiting plate 43 is elastically connected with the inner part of the curved bar 42 through the tension spring 44, the limiting groove 48 is uniformly and annularly arranged on the lower surface of the workbench 3, the locking mechanism 4 further includes a limiting sleeve 45, a pull rod 46 and a pedal plate 47, the middle part of the outer wall of the curved bar 42 is hinged with the pull rod 46 through a ball hinge, and the bottom of the pull rod 46 is fixedly installed with the pedal plate 47 which is horizontally arranged, limiting sleeve 45 passes through support fixed mounting on the lateral wall of support column 1, and limiting sleeve 45 sets up perpendicularly, pull rod 46 pass limiting sleeve 45 and with limiting sleeve 45 sliding connection, be fixed with connecting rod 49 on the curved bar 42, just connecting rod 49's end fixing has rubber pad 49a, just connecting rod 49 runs through limiting plate 43. When the workbench 3 is used, a worker needs to rotate the workbench 3, the foot pedal 47 is stepped by the foot to enable the pull rod 46 to drive the curved rod 42 to rotate, so that the tension spring 44 between the curved rod 42 and the limiting plate 43 is stretched, the arc-shaped conical head on the curved rod 42 slides away from the limiting groove 48 at the bottom of the workbench 3, the workbench 3 is rotated to a proper angle, the foot pedal 47 is loosened, the arc-shaped conical head of the curved rod 42 slides into the corresponding limiting groove 48 below the workbench 3 under the action of the tension spring 44, and therefore the workbench 3 is fixed.

Referring to fig. 1 and 3, the fixed column 5 is fixedly installed at a center of a circle on the upper surface of the workbench 3, the workbench 3 is provided with an annular operating cavity 8, the fixed column 5 is sleeved with a plurality of rotating rings 6 which are distributed vertically and are rotatably connected with the fixed column 5, each rotating ring 6 is provided with a fixing mechanism 7, each fixing mechanism 7 comprises a thread fixing block 73, a threaded rod 75, a pressure plate 76 and a rotating button 77, the thread fixing block 73 is inserted with a threaded rod 75 connected by threads, the top of the threaded rod 75 is fixedly provided with the rotating button 77, the bottom of the threaded rod 75 is provided with the pressure plate 76 connected by rotation, the fixing mechanism 7 further comprises a sleeve 71, a sliding rod 72 and a screw 74, one end of the sleeve 71 is fixedly installed on the rotating ring 6 and horizontally arranged, one end of the sliding rod 72 is inserted into the sleeve 71 and is slidably connected with the sleeve 71, and the other end of the sliding rod 72 is fixedly connected with a threaded fixing block 73, one side of the sleeve 71, which is far away from the rotating ring 6, is provided with a threaded through hole, and a screw 74 in threaded connection is inserted in the threaded through hole. When the workpiece fixing device is used, a workpiece to be machined is placed in the operation cavity 8, the sliding rod 72 enables the pressure plate 76 to correspond to the position where the workpiece needs to be fixed, the screw 74 enables the sliding rod 72 to be fixed through a rotary screwing mode, the threaded rod 75 slides downwards along the thread fixing block 73 through the rotary knob 77, the workpiece is firmly pressed and connected through the pressure plate 76, the rotating ring 6 is rotated, the remaining fixing mechanisms 7 are enabled to rotate to the installation positions corresponding to the workpiece to be subsequently fixed, different positions of the workpiece to be machined can be fixed through the plurality of fixing mechanisms 7, the workpiece fixing efficiency of workers is improved, the bottom of the support column 1 is provided with the plurality of locking universal wheels 9 through the support, and the workbench is enabled to be convenient to transport and move.

The working principle of the static pressure support rotary worktable provided by the invention is as follows: sufficient pressure oil 23 is stored in the oil groove, so that static pressure support is achieved on the fixed shaft 21, the workbench 3 is free of noise, vibration and impact force during rotation, and the smoothness of rotation of the workbench 3 is improved by matching with the balls 25 and the rotating sleeve ring 22; placing a processed workpiece into the operation cavity 8, sliding the slide rod 72 to enable the pressure plate 76 to correspond to a position where the workpiece needs to be fixed, fixing the slide rod 72 by a screw 74 in a rotating and tightening mode, rotating the knob 77 to enable the threaded rod 75 to slide downwards along the thread fixing block 73 until the pressure plate 76 firmly presses the workpiece, rotating the rotating ring 6 to enable the rest fixing mechanism 7 to rotate to the installation position corresponding to the workpiece for subsequent fixing, when a worker needs to rotate the workbench 3, stepping on the pedal 47 by feet to enable the pull rod 46 to drive the curved rod 42 to rotate, so that the tension spring 44 between the curved rod 42 and the limit plate 43 is stretched, at the moment, the arc-shaped conical head on the curved rod 42 slides away from the limit groove 48 at the bottom of the workbench 3, rotating the workbench 3 to a proper angle, loosening the pedal 47, and enabling the arc-shaped conical head of the curved rod 42 to slide into the corresponding limit groove 48 below the workbench 3 under the action of the tension spring 44, therefore, the workbench 3 is fixed, the connecting rod 49 is fixed on the curved rod 42, a rubber pad 49a is fixed at the end of the connecting rod 49, the connecting rod 49 penetrates through the limiting plate 43, the connecting rod 49 drives the rubber pad 49a to abut against the outer side wall of the fixing shaft 21 when the curved rod 42 is clamped with the limiting groove 48, the fixing of the fixing shaft 21 is achieved, and the workbench 3 is prevented from rotating.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a static pressure supports swivel work head which characterized in that: the device comprises a supporting column (1), a static pressure mechanism (2), a locking mechanism (4) and a fixing column (5), wherein the static pressure mechanism (2) is arranged in the supporting column (1), the static pressure mechanism (2) comprises a fixing shaft (21), a rotating sleeve ring (22), pressure oil (23), a sealing sleeve (24) and balls (25), one end of the fixing shaft (21) is inserted into an oil groove formed in the supporting column (1), the oil groove is filled with sufficient pressure oil (23), the fixing shaft (21) is fixedly sleeved with the rotating sleeve ring (22), the bottom of the rotating sleeve ring (22) is fixedly provided with the sealing sleeve (24) for sealing the oil groove, the other end of the fixing shaft (21) extends out of the supporting column (1) and is fixedly connected with the bottom of a workbench (3), and a plurality of balls (25) in rolling connection are embedded in the inner wall of a through groove close to the top in the supporting column (1), the ball (25) is connected with the outer side wall of the fixed shaft (21) in a rolling way; the locking mechanism (4) is arranged on the supporting column (1) and used for locking the rotation of the workbench (3); the fixed column (5) is fixedly arranged at the circle center of the upper surface of the workbench (3), a plurality of rotating rings (6) which are distributed up and down and are rotatably connected with the fixed column (5) are sleeved on the fixed column (5), and a fixing mechanism (7) is arranged on each rotating ring (6);

the locking mechanism (4) comprises a rotating seat (41), a curved rod (42), a limiting plate (43), a tension spring (44) and a limiting groove (48), the rotating seat (41) is fixedly installed on the outer wall of the supporting column (1), the rotating seat (41) is rotatably connected with one end of the curved rod (42) through a pin shaft, an arc-shaped conical head is welded at the other end of the curved rod (42), the limiting plate (43) which is obliquely arranged is fixedly installed on the rotating seat (41), the inner wall of the limiting plate (43) is elastically connected with the inner part of the curved rod (42) through the tension spring (44), the limiting groove (48) is uniformly and annularly formed in the lower surface of the workbench (3), a connecting rod (49) is fixed on the curved rod (42), a rubber pad (49a) is fixed at the end part of the connecting rod (49), and the connecting rod (49) penetrates through the limiting plate (43);

locking mechanical system (4) still include stop collar (45), pull rod (46) and running-board (47), the middle part of curved bar (42) outer wall articulates through the ball hinge has pull rod (46), and the bottom fixed mounting of pull rod (46) has running-board (47) of horizontal setting, stop collar (45) pass through support fixed mounting on the lateral wall of support column (1), and stop collar (45) vertical setting, pull rod (46) pass stop collar (45) and with stop collar (45) sliding connection.

2. A hydrostatic support rotary table as defined in claim 1, wherein: fixed establishment (7) are including screw fixed block (73), threaded rod (75), pressure disk (76) and turn button (77), insert threaded rod (75) that are equipped with threaded connection on screw fixed block (73), the top fixed mounting of threaded rod (75) has turn button (77), and pressure disk (76) that the rotation is connected are installed to the bottom of threaded rod (75).

3. A hydrostatic support rotary table as set forth in claim 2, wherein: the fixing mechanism (7) further comprises a sleeve (71), a sliding rod (72) and a screw (74), one end of the sleeve (71) is fixedly installed on the rotating ring (6) and horizontally arranged, one end of the sliding rod (72) is inserted into the sleeve (71) and is in sliding connection with the sleeve (71), the other end of the sliding rod (72) is fixedly connected with a thread fixing block (73), a thread through hole is formed in one side, away from the rotating ring (6), of the sleeve (71), and the screw (74) in threaded connection is inserted into the thread through hole.

4. A hydrostatic support rotary table as defined in claim 1, wherein: an operation cavity (8) which is annularly arranged is formed in the workbench (3); the bottom of support column (1) is through the support mounting have a plurality of locking universal wheels (9).