Height-adjustable rotating table

Abstract

The utility model relates to the technical field of rotating tables, in particular to a height-adjustable rotating table which comprises a base, a rotating table top rotatably mounted on the base and used for fixing a workpiece to be machined, and a driving assembly mounted in the base and used for driving the rotating table top to rotate. A plurality of sets of hydraulic cylinders used for adjusting the height are fixedly arranged at the corners of the bottom of the base, and a telescopic dustproof sleeve is installed on the edge of the bottom of the base. A double-rotating-table-board structure is adopted, a table board a is matched with a reduction gear set a which is small in tooth number and adopts three planetary gears to drive a table board b to rotate by a certain angle, coarse positioning is achieved, the response speed and stability are guaranteed, and then a reduction gear set b which is large in tooth number and adopts four planetary gears drives the table board b to rotate by an accurate angle again. Through the cooperation of the coarse positioning and the precise positioning, the combination of the coarse positioning and the precise positioning is realized, and the rotation precision, the response speed and the stability are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotary table technical field, concretely is a height -adjustable rotary table. BACKGROUND

[0002] Rotary table is the common auxiliary equipment in machining, is used in the machining process to rotate workpiece, so that milling, drilling, grinding etc. Operation is carried out from different angles, its core part is a platform that can rotate horizontally or vertically, through hydraulic, pneumatic or electric drive system, realize accurate positioning and smooth rotation, the worktable is usually equipped with clamping device, ensure that workpiece keeps stable during machining.

[0003] Rotary table significantly improves the flexibility and efficiency of workpiece processing in batch production, but it still has some problems: some workpieces have higher machining accuracy requirements, so the rotary accuracy of the rotary table is higher, but the response speed of the rotary table will be reduced when it guarantees high accuracy requirements, and the manufacturing and maintenance cost is higher, therefore, in view of the above status, it is urgent to develop a height-adjustable rotary table to overcome the shortcomings in current practical application and meet the current demand. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a height-adjustable rotary table to solve the problems in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a height-adjustable rotary table, including base, rotatable installation on the base for fixing workpiece to be machined rotary table, installation in the base for driving the rotary table to rotate drive assembly, the bottom corner position of the base is fixed with multiple groups of hydraulic cylinders for adjusting height, the bottom edge of the base is provided with telescopic dustproof sleeve;

[0006] The rotary table includes table a and table b, table a is rotatably installed on the base, a speed reducing gear set a for transmission is installed between the base and table a, table b is rotatably installed on table a, a speed reducing gear set b for transmission is installed between table a and table b;

[0007] The inside of table a is fixed with inner ring a, the speed reducing gear set a includes main gear a and planetary gear a, the main gear a is engaged with the planetary gear a, and the planetary gear a is engaged with the inner ring a;

[0008] The inside of table b is fixed with inner ring b, the speed reducing gear set b includes main gear b and planetary gear b, the main gear b is engaged with the planetary gear b, and the planetary gear b is engaged with the inner ring b.

[0009] Preferably, the base is fixed with a rotary support between the table top a, in particular, through the setting of rotary support can withstand large radial, axial and overturning moment load, provide smooth rotation, reduce friction and vibration, ensure the accuracy and stability of mechanical operation.

[0010] Preferably, the middle position of the table top a is provided with a through hole, and the upper surface of the table top a is fixed with a plurality of positioning shafts for mounting the planetary gear b.

[0011] Preferably, the middle position of the table top a is rotatably mounted with a rotating shaft, and the rotating shaft is sleeved with a rotatable sleeve.

[0012] Preferably, the planetary gear a is provided with three equidistant rotatable installations on the base, and the planetary gear b is provided with four rotatable installations on the positioning shaft, in particular, the transmission through the setting of planetary gear reduction structure can withstand high radial and axial load, and overturning moment.

[0013] Preferably, the driving assembly comprises a motor fixed on the outer wall of the base, a reduction box mounted in the base, and a transmission box mounted on one side of the reduction box, the transmission box and the motor are drivingly connected through the reduction box, in particular, the transmission box is a chain and sprocket structure transmission assembly.

[0014] Preferably, the driving assembly is provided with two groups, the rotating shaft and the transmission box of one of the driving assemblies are drivingly connected, and the sleeve and the transmission box of the other driving assembly are drivingly connected.

[0015] Preferably, the main gear a is sleeved on the sleeve, and the main gear b is sleeved on the top end of the rotating shaft.

[0016] Preferably, the number of teeth of the reduction gear set a and the inner gear ring a is less than that of the reduction gear set b and the inner gear ring b, in particular, the outer diameter of the gear center circle of the reduction gear set a and the reduction gear set b is consistent, and the inner diameter of the inner gear ring a and the inner gear ring b is consistent.

[0017] Compared with the prior art, the adjustable height rotary workbench has the following beneficial effects:

[0018] It adopts double rotary table structure, so that the table a cooperates with the reduction gear set a with less number of teeth and three planetary gears to drive the table b to rotate by a certain angle, realizes coarse positioning, guarantees response speed and stability, then the table b is driven to rotate by a precise angle again by the reduction gear set b with more number of teeth and four planetary gears, realizes precise rotary positioning, the two cooperate with each other, realizes the combination of coarse positioning and precise positioning, guarantees the rotary precision, response speed and stability, and the reduction gear sets all adopt planetary gear structure, can realize efficient power transmission and distribution, through the simultaneous work of multiple planetary gears, disperses the load, improves the bearing capacity and service life, meets different speed and torque requirements. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings:

[0020] Figure 1 It is a front structure schematic diagram of the present application;

[0021] Figure 2 It is a side structure schematic diagram of the present application;

[0022] Figure 3 It is an overall explosion diagram of the present application;

[0023] Figure 4 It is a reduction gear set a structure schematic diagram of the present application;

[0024] Figure 5 It is a reduction gear set b structure schematic diagram of the present application.

[0025] In the drawing: 10, base; 101, rotary support; 20, rotary table; 201, table a; 2011, positioning shaft; 2012, through hole; 2013, inner ring a; 202, table b; 2021, inner ring b; 203, reduction gear set a; 2031, main gear a; 2032, planetary gear a; 204, sleeve; 205, rotating shaft; 206, reduction gear set b; 2061, main gear b; 2062, planetary gear b; 30, dust cover; 40, driving assembly; 401, motor; 402, reduction box; 403, transmission box; 50, hydraulic cylinder. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described 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. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0027] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense. For example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0028] Embodiment:

[0029] Please refer to Figures 1-5 The present application provides a technical scheme: a height-adjustable rotary workbench, comprising a base 10, a rotary table 20 rotatably mounted on the base 10 for fixing a workpiece to be machined, a drive assembly 40 mounted in the base 10 for driving the rotary table 20 to rotate, a plurality of hydraulic cylinders 50 for adjusting the height are fixedly arranged at the bottom corner positions of the base 10, and a telescopic dust cover 30 is mounted at the bottom edge of the base 10.

[0030] The rotary table 20 comprises a table a 201 and a table b 202, the table a 201 is rotatably mounted on the base 10, a speed reduction gear set a 203 for transmission is mounted between the base 10 and the table a 201, the table b 202 is rotatably mounted on the table a 201, and a speed reduction gear set b 206 for transmission is mounted between the table a 201 and the table b 202.

[0031] The inside of the table a 201 is fixedly provided with an inner ring gear a 2013, the speed reduction gear set a 203 comprises a main gear a 2031 and a planetary gear a 2032, the main gear a 2031 is engaged with the planetary gear a 2032, and the planetary gear a 2032 is engaged with the inner ring gear a 2013.

[0032] The inside of the table b 202 is fixedly provided with an inner ring gear b 2021, the speed reduction gear set b 206 comprises a main gear b 2061 and a planetary gear b 2062, the main gear b 2061 is engaged with the planetary gear b 2062, and the planetary gear b 2062 is engaged with the inner ring gear b 2021.

[0033] Preferably, the base 10 is fixed with the rotary bearing 101 between the table a201, specifically, through the setting of the rotary bearing 101 can withstand larger radial, axial and overturning moment load, provide smooth rotation, reduce friction and vibration, ensure the accuracy and stability of mechanical operation.

[0034] Preferably, the middle position of the table a201 is provided with a through hole 2012, and the upper surface of the table a201 is fixed with a plurality of positioning shafts 2011 for mounting the planetary gear b2062.

[0035] Preferably, the middle position of the table a201 is rotatably mounted with a rotating shaft 205, and the rotating shaft 205 is sleeved with a rotatable sleeve 204.

[0036] Preferably, the planetary gear a2032 is provided with three, and is rotatably installed on the base 10, and the planetary gear b2062 is provided with four, and the planetary gear b2062 is rotatably installed on the positioning shaft 2011, specifically, the transmission is realized through the setting of the planetary gear reduction structure, which can withstand higher radial and axial load, and overturning moment.

[0037] Preferably, the driving assembly 40 includes a motor 401 fixed on the outer wall of the base 10, a reduction box 402 installed in the base 10, and a transmission box 403 installed on one side of the reduction box 402. The transmission box 403 is drivingly connected with the motor 401 through the reduction box 402, specifically, the transmission box 403 is a chain and sprocket structure transmission assembly.

[0038] Preferably, the driving assembly 40 is provided with two groups, the rotating shaft 205 is drivingly connected with the transmission box 403 of one of the driving assemblies 40, and the sleeve 204 is drivingly connected with the transmission box 403 of the other driving assembly 40.

[0039] Preferably, the main gear a2031 is sleeved on the sleeve 204, and the main gear b2061 is sleeved on the top end of the rotating shaft 205.

[0040] Preferably, the number of teeth of the reduction gear set a203 and the inner gear ring a2013 is less than that of the reduction gear set b206 and the inner gear ring b2021, specifically, the outer diameter of the gear center circle of the reduction gear set a203 and the reduction gear set b206 is consistent, and the inner diameter of the inner gear ring a2013 and the inner gear ring b2021 is consistent

[0041] Working principle: start a set of drive components 40 motor 401, cooperate with the reduction box 402 and transmission box 403 drive sleeve 204 rotation, in turn by sleeve 204 drive reduction gear set a 203 main gear a2031 rotation, again by main gear a2031 transmission drive inner ring a2013 and table a201 rotation a certain angle, then start another set of drive components 40 motor 401, cooperate with the reduction box 402 and transmission box 403 drive shaft 205 rotation, in turn by shaft 205 drive reduction gear set b 206 main gear b2061 rotation, again by main gear b2061 transmission drive inner ring b2021 and table b202 rotation a certain angle, realize the accurate rotation of the table.

[0042] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action without necessarily requiring or implying that there is any such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... " does not, without more limitations, preclude the existence of further identical elements in the process, method, article, or apparatus that comprises the recited element.

Claims

1. A height adjustable rotary table, characterized by: The base (10) is provided with a plurality of hydraulic cylinders (50) for height adjustment, and a dustproof sleeve (30) is mounted on the bottom edge of the base (10). The rotary table (20) comprises a table a (201) and a table b (202), the table a (201) is rotatably mounted on the base (10), a speed reduction gear set a (203) is mounted between the base (10) and the table a (201) for transmission, the table b (202) is rotatably mounted on the table a (201), and a speed reduction gear set b (206) is mounted between the table a (201) and the table b (202) for transmission. The inside of the table a (201) is fixedly provided with an inner ring a (2013), the speed reduction gear set a (203) comprises a main gear a (2031) and a planetary gear a (2032), the main gear a (2031) is engaged with the planetary gear a (2032), and the planetary gear a (2032) is engaged with the inner ring a (2013). The inside of the table b (202) is fixedly provided with an inner ring b (2021), the speed reduction gear set b (206) comprises a main gear b (2061) and a planetary gear b (2062), the main gear b (2061) is engaged with the planetary gear b (2062), and the planetary gear b (2062) is engaged with the inner ring b (2021).

2. A height adjustable rotary table according to claim 1, wherein: The base (10) and the table a (201) are fixedly provided with a rotary support (101).

3. The height adjustable rotary table of claim 1, wherein: A through hole (2012) is formed in the middle position of the table a (201), and a plurality of positioning shafts (2011) for mounting the planetary gear b (2062) are fixedly arranged on the upper surface of the table a (201).

4. The height adjustable rotary table of claim 1, wherein: A rotating shaft (205) is rotatably mounted in the middle position of the table a (201), and a rotatable sleeve (204) is arranged on the rotating shaft (205).

5. The height adjustable rotary table according to claim 1, wherein: The three planetary gears a (2032) are equidistantly rotatably mounted on the base (10), and the four planetary gears b (2062) are rotatably mounted on the positioning shafts (2011).

6. The height adjustable rotary table according to claim 1, wherein: The drive assembly (40) comprises a motor (401) fixedly arranged on the outer wall of the base (10), a reduction box (402) mounted in the base (10), and a transmission box (403) mounted on one side of the reduction box (402), and the transmission box (403) is in driving connection with the motor (401) through the reduction box (402).

7. A height adjustable rotary table according to claim 4 wherein: The drive assembly (40) comprises two groups, the rotating shaft (205) is in driving connection with the transmission box (403) of one group of drive assemblies (40), and the sleeve (204) is in driving connection with the transmission box (403) of the other group of drive assemblies (40).

8. The height adjustable rotary table of claim 1, wherein: The main gear a (2031) is sleeved on the sleeve (204), and the main gear b (2061) is sleeved on the top end of the rotating shaft (205).

9. The height adjustable rotary table of claim 1, wherein: The number of teeth of the reduction gear set a (203) and the inner gear ring a (2013) is less than that of the reduction gear set b (206) and the inner gear ring b (2021).

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