Automatic locking rotary table mechanism and grinding machine

Abstract

According to the automatic locking rotary table mechanism and the grinding machine, a rotary cavity is formed in a rotary table base, a rotary support of a rotary table is rotationally arranged in the rotary cavity, a rotary table of the rotary table is arranged outside the rotary cavity, and a flange face is formed on the face, facing the rotary table base, of the rotary table. A hydraulic cylinder with a piston and an elastic assembly used for pushing the rotary table to move in the direction perpendicular to the flange face are arranged in the rotary cavity. When the liquid working medium in the hydraulic cylinder is pressurized to push the piston, the piston pushes the elastic assembly to be in a compressed state, and the flange face of the rotary table is separated from the rotary table base to unlock the rotary table. When pressure of a liquid working medium in the hydraulic cylinder is relieved, the elastic assembly pushes the piston so that the rotary table can quickly move to the position where the flange face abuts against or abuts against the rotary table base, the rotary table can be in a locked rotation stopping state, the response sensitivity of the locking action of the rotary table can be improved, the stability of the rotary table in the locking process can be enhanced, and the service life of the rotary table is prolonged. And the workpiece machining precision of the numerical control grinding machine is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of machine tool equipment, and in particular relates to an automatic locking turntable mechanism and a grinding machine. Background Art

[0002] With the continuous development of grinding machine manufacturing technology, the continuous progress of CNC electronic technology, and the continuous improvement of machining parts precision and production efficiency, it has become a trend for CNC grinding machines at home and abroad to have high automation, high precision and high productivity to meet the ever-increasing technical requirements of parts processing. At present, the turntable mechanism of the grinding machine usually uses a worm gear mechanism for transmission, and the turntable of the turntable mechanism generally relies on the self-locking characteristics of the worm gear mechanism to achieve locking. However, for a turntable with large inertia rotation, it is not reliable to rely on the self-locking characteristics of the worm gear mechanism to achieve locking, which not only leads to a low sensitivity of the turntable locking action response, but also leads to poor stability when the turntable is locked, which easily affects the machining accuracy of the CNC grinder on the workpiece. Utility Model Content

[0003] Based on the above problems existing in the prior art, one of the purposes of the embodiments of the utility model is to provide an automatic locking turntable mechanism to solve the problems of low sensitivity of the turntable locking action response and poor stability during stop locking of the turntable mechanism in the prior art.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide an automatic locking turntable mechanism, comprising:

[0005] The turntable seat is provided with a rotating cavity;

[0006] A turntable, comprising a turntable support rotatably arranged in the turntable cavity and a turntable connected to the turntable support and located outside the turntable cavity, wherein a flange surface for abutting or sticking to the turntable seat is formed on a side of the turntable facing the turntable seat;

[0007] an elastic component, used for pushing the turntable to move in a direction perpendicular to the flange surface; and

[0008] A hydraulic actuator, comprising a hydraulic cylinder fixedly arranged in the rotary chamber and a piston for pushing the elastic component to compress the elastic component, the piston being slidably arranged in the hydraulic cylinder, and the elastic component being connected to the piston;

[0009] When the liquid working medium in the hydraulic cylinder is pressurized to push the piston to compress the elastic component, the flange surface disengages from the turntable seat to unlock the turntable; when the liquid working medium in the hydraulic cylinder is depressurized, the elastic component pushes the turntable to move to a position where the flange surface abuts against or rests on the turntable seat, so that the turntable is in a locked and non-rotating state.

[0010] Furthermore, the elastic component includes a fixed seat fixedly connected to the turntable seat or the hydraulic cylinder and a disc spring connected to the fixed seat, and the disc spring is connected to the piston so that the piston can push the disc spring to be in a compressed state.

[0011] Furthermore, the disc spring is located in the rotary cavity, and the disc spring is sleeved on the periphery of the rotary support.

[0012] Furthermore, the cross-section of the piston is T-shaped, and the piston includes a piston sleeve extending axially and a piston body extending radially outward from one end of the piston sleeve close to the disc spring, the swivel support is inserted in the piston sleeve, and the piston body abuts against the disc spring.

[0013] Further, a first sealing ring is provided at a connection between the piston sleeve and the hydraulic cylinder; or a second sealing ring is provided at a connection between the piston body and the hydraulic cylinder.

[0014] Furthermore, the position of the swivel support close to the turntable is rotatably connected to the turntable seat via a first bearing, and the position of the swivel support away from the turntable is rotatably connected to the turntable seat via a second bearing.

[0015] Furthermore, the automatic locking turntable mechanism also includes a motor for driving the turntable to rotate, and the motor is connected to the rotating support.

[0016] Furthermore, a reducer transition seat is provided between the motor and the slewing support, and the automatic locking turntable mechanism also includes a reducer for transmitting the torque output by the motor to the slewing support, the reducer is installed on the reducer transition seat, the input end of the reducer is transmission-connected to the output shaft of the motor, and the output end of the reducer is transmission-connected to the slewing support.

[0017] Furthermore, a rotation-stopping surface for the flange surface to abut or stick against is provided at a position on the turntable seat corresponding to the flange surface, and a stop plate is provided on the rotation-stopping surface.

[0018] Based on the above problems existing in the prior art, a second purpose of the embodiments of the utility model is to provide a grinding machine having an automatic locking turntable mechanism in any of the above solutions.

[0019] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is: to provide a grinding machine, comprising the automatic locking turntable mechanism provided by any of the above-mentioned solutions.

[0020] Compared with the prior art, the above one or more technical solutions in the embodiments of the present invention have at least one of the following beneficial effects:

[0021] The automatic locking turntable mechanism and the grinding machine in the embodiment of the utility model are provided with a rotary cavity on the turntable seat, the rotary support of the turntable is rotatably arranged in the rotary cavity, the turntable of the turntable is arranged outside the rotary cavity and close to the turntable seat, a flange surface is formed on the side of the turntable facing the turntable seat, and a hydraulic cylinder with a piston and an elastic component for pushing the turntable to move in a direction perpendicular to the flange surface are provided in the rotary cavity. When the liquid working medium in the hydraulic cylinder is pressurized to push the piston, and the piston pushes the elastic component to be in a compressed state, the flange surface of the turntable is separated from the turntable seat to unlock the turntable. When the liquid working medium in the hydraulic cylinder is depressurized, the elastic component pushes the piston to make the turntable move quickly to a position where the flange surface is against or against the turntable seat, so that the turntable is in a stable locked and non-rotating state. Therefore, the automatic locking turntable mechanism provided in the embodiment of the utility model can not only improve the sensitivity of the turntable locking action response, but also enhance the stability of the turntable when it is stopped and locked, which is conducive to improving the processing accuracy of the CNC grinder on the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 A schematic cross-sectional view of the automatic locking turntable mechanism provided in an embodiment of the utility model;

[0024] Figure 2 An exploded view of a turntable seat and a turntable provided in an embodiment of the utility model;

[0025] Figure 3 A schematic cross-sectional view of an automatic locking turntable mechanism provided in another embodiment of the utility model.

[0026] Among them, the reference numerals in the figure are:

[0027] 1- turntable seat; 11- rotating cavity; 12- anti-rotation surface;

[0028] 2-turntable; 21-slewing support; 22-turntable; 23-flange surface;

[0029] 3-elastic component; 31-fixed seat; 32-disc spring;

[0030] 4-hydraulic actuator; 41-hydraulic cylinder; 42-piston; 421-piston sleeve; 422-piston body; 43-first sealing ring; 44-second sealing ring; 45-pressurization chamber; 46-infusion port; 47-infusion channel;

[0031] 5-first bearing; 6-second bearing; 7-motor; 8-reducer; 9-reducer transition seat. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] It should be noted that when an element is referred to as being "connected to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a dedicated orientation, be constructed and operated in a dedicated orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] Reference throughout the specification to "one embodiment" or "an embodiment" means that the specialized features, structures, or characteristics described in connection with the embodiment are included in at least one embodiment of the present application. Thus, the phrases "in one embodiment," "in some embodiments," or "in some of these embodiments" appear in various places throughout the specification, not all of which refer to the same embodiment. Furthermore, in one or more embodiments, the specialized features, structures, or characteristics may be combined in any suitable manner.

[0038] Please also read Figures 1 to 3 The automatic locking turntable mechanism provided in the embodiment of the utility model is now described. The automatic locking turntable mechanism provided in the embodiment of the utility model is suitable for quickly and automatically locking the turntable 2 of the turntable mechanism, and enhancing the stability of the turntable 2 when stopping and locking, and improving the processing accuracy of the workpiece by the CNC grinder.

[0039] Please refer to further Figure 1 , Figure 2 and Figure 3The automatic locking turntable mechanism provided by the embodiment of the utility model includes a turntable seat 1, a turntable 2, an elastic component 3 and a hydraulic actuator 4. The turntable seat 1 is provided with a rotary cavity 11. The turntable 2 includes a rotary support 21 rotatably arranged in the rotary cavity 11 and a turntable 22 connected to the rotary support 21. The turntable 22 is located outside the rotary cavity 11 and close to the turntable seat 1. A flange surface 23 is formed on the side of the turntable 22 facing the turntable seat 1. The flange surface 23 is used to abut or abut against the turntable seat 1 to quickly stop and lock the turntable 2. The elastic component 3 is used to push the turntable 2 to move in a direction perpendicular to the flange surface 23. The hydraulic actuator 4 includes a hydraulic cylinder 41 fixedly arranged in the rotary cavity 11 and a piston 42 used to push the elastic component 3 to compress the elastic component 3. The piston 42 is slidably arranged in the hydraulic cylinder 41. The elastic component 3 is connected to the piston 42. When the liquid working medium in the hydraulic cylinder 41 is pressurized, the piston 42 is pushed by the piston 42, and the piston 42 can compress the elastic component 3. When the elastic component 3 is compressed, the flange surface 23 of the turntable 2 is separated from the turntable seat 1 to unlock the turntable 2. When the liquid working medium in the hydraulic cylinder 41 is depressurized, the piston 42 cancels the thrust on the elastic component 3, and the elastic component 3 returns to its original state under the action of its own elastic force, so that the elastic component 3 quickly pushes the turntable 2 to move to a position where the flange surface 23 abuts or rests on the turntable seat 1, so that the turntable 2 is in a stable locked and non-rotating state. It should be noted that in some specific embodiments, the piston 42 can be fixedly mounted on the slewing support 21, and the elastic component 3 is respectively connected to the piston 42, the turntable seat 1 or the hydraulic cylinder 41. When the liquid working medium in the hydraulic cylinder 41 is depressurized, the piston 42 cancels the thrust on the elastic component 3, and the elastic component 3 pushes the piston 42 to move away from the turntable 22. During the movement, the piston 42 drives the turntable 2 to move quickly to a position where the flange surface 23 is against or attached to the turntable seat 1, so that the turntable 2 is in a stable locked and anti-rotation state.

[0040] Compared with the prior art, the automatic locking turntable mechanism provided by the embodiment of the utility model is characterized in that a rotating chamber 11 is provided on the turntable seat 1, the rotating support 21 of the turntable 2 is rotatably provided in the rotating chamber 11, the turntable 22 of the turntable 2 is provided outside the rotating chamber 11 and close to the turntable seat 1, a flange surface 23 is formed on the side of the turntable 22 facing the turntable seat 1, and a hydraulic cylinder 41 having a piston 42 and an elastic component 3 for pushing the turntable 2 to move in a direction perpendicular to the flange surface 23 are provided in the rotating chamber 11. When the liquid working medium in the hydraulic cylinder 41 is pressurized to push the piston 42, and the piston 42 pushes the elastic component 3 to be in a compressed state, the flange surface 23 of the turntable 2 is separated from the turntable seat 1 to unlock the turntable 2. When the liquid working medium in the hydraulic cylinder 41 is depressurized, the elastic component 3 pushes the piston 42 to quickly move the turntable 2 to a position where the flange surface 23 abuts against or abuts against the turntable seat 1, so that the turntable 2 is in a stable locked and non-rotating state. Therefore, the automatic locking turntable mechanism provided in the embodiment of the utility model can not only improve the sensitivity of the locking action response of the turntable 2, but also enhance the stability of the turntable 2 when it is stopped and locked, which is beneficial to improving the processing accuracy of the CNC grinder on the workpiece.

[0041] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments, the elastic component 3 includes a fixed seat 31 fixedly connected to the turntable seat 1 or the hydraulic cylinder 41 and a disc spring 32 connected to the fixed seat 31, and the disc spring 32 is connected to the piston 42 so that the piston 42 can push the disc spring 32 to be in a compressed state. In this embodiment, when the liquid working medium in the hydraulic cylinder 41 is pressurized to push the piston 42, and the piston 42 also pushes the disc spring 32 to be in a compressed state, the flange surface 23 of the turntable 2 can quickly detach from the turntable seat 1 to unlock the turntable 2. When the liquid working medium in the hydraulic cylinder 41 is depressurized, the disc spring 32 pushes the piston 42 in the opposite direction to quickly move the turntable 2 to a position where the flange surface 23 abuts or abuts against the turntable seat 1, so that the turntable 2 is in a stable locked and stopped state. Due to the cooperation of the hydraulic drive structure and the disc spring 32, not only can the sensitivity of the lock action response of the turntable 2 be improved, but also the stability of the turntable 2 when it is stopped and locked can be enhanced, which is conducive to improving the processing accuracy of the CNC grinder on the workpiece.

[0042] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments, the disc spring 32 is located in the rotary chamber 11, and the disc spring 32 is sleeved on the periphery of the rotary support 21. On the one hand, the response speed and stability reliability of the disc spring 32 pushing the piston 42 to drive the rotary support 21 to move can be improved, and on the other hand, the overall volume of the automatic locking turntable mechanism can be reduced. In addition, sleeved on the periphery of the rotary support 21, the stability and convenience of the installation of the disc spring 32 can be enhanced.

[0043] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments, the cross-section of the piston 42 is T-shaped. The piston 42 includes a piston sleeve 421 extending axially and a piston body 422 extending radially outward from one end of the piston sleeve 421 close to the disc spring 32. The swivel support 21 is inserted into the piston sleeve 421, and the piston body 422 abuts against the disc spring 32. On the one hand, the response speed and stability reliability of the disc spring 32 pushing the piston 42 or the piston 42 pushing the disc spring 32 can be improved, and on the other hand, the overall volume of the automatic locking turntable mechanism can be reduced.

[0044] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments, a first sealing ring 43 is provided at the connection between the piston sleeve 421 and the hydraulic cylinder 41. Alternatively, a second sealing ring 44 is provided at the connection between the piston body 422 and the hydraulic cylinder 41. The hydraulic cylinder 41 has a pressurizing chamber 45 for accommodating a liquid working medium. The hydraulic cylinder 41 is provided with an infusion port 46 for the liquid working medium to enter or flow out and an infusion channel 47 connecting the infusion port 46 and the pressurizing chamber 45. The piston body 422 is slidably disposed in the pressurizing chamber 45. The liquid working medium may be, but is not limited to, hydraulic oil.

[0045] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments, the position of the swivel support 21 close to the turntable 22 is rotatably connected to the turntable seat 1 through the first bearing 5, and the position of the swivel support 21 away from the turntable 22 is rotatably connected to the turntable seat 1 through the second bearing 6, so that the swivel support 21 can be stably and reliably rotatably installed in the rotation cavity 11 of the turntable seat 1. It should be noted that the first bearing 5 and the second bearing 6 are linear bearings, so that the swivel support 21 can move a small distance in a direction perpendicular to the flange surface 23, and the distance is enough to allow the flange surface 23 to be separated from the turntable seat 1.

[0046] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments, the automatic locking turntable mechanism also includes a motor 7 for driving the turntable 2 to rotate. The motor 7 is connected to the rotary support 21. The rotary support 21 can be driven to rotate by the motor 7, and the rotary support 21 can then drive the turntable 22 to rotate.

[0047] Please refer to Figure 1 , Figure 2 and Figure 3In some embodiments, a reducer transition seat 9 is provided between the motor 7 and the slewing support 21. The automatic locking turntable mechanism also includes a reducer 8 for transmitting the torque output by the motor 7 to the slewing support 21. The reducer 8 is installed on the reducer transition seat 9. The input end of the reducer 8 is transmission-connected to the output shaft of the motor 7, and the output end of the reducer 8 is transmission-connected to the slewing support 21.

[0048] Please refer to Figure 1 , Figure 2 and Figure 3 In some of the embodiments, a stop surface 12 for the flange surface 23 to abut or stick to is provided at a position corresponding to the flange surface 23 on the turntable seat 1, and a brake pad is provided on the stop surface 12, which can not only improve the sensitivity of the locking action response of the turntable 2, but also enhance the stability of the turntable 2 during stopping and locking, which is beneficial to improving the processing accuracy of the CNC grinder on the workpiece.

[0049] The embodiment of the utility model also provides a grinding machine, which includes the automatic locking turntable mechanism provided in any of the above embodiments. Since the grinding machine has all the technical features of the automatic locking turntable mechanism provided in any of the above embodiments, it has the same technical effects as the above automatic locking turntable mechanism.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic locking turntable mechanism, characterized in that: include: The turntable seat is provided with a rotating cavity; A turntable, comprising a turntable support rotatably arranged in the turntable cavity and a turntable connected to the turntable support and located outside the turntable cavity, wherein a flange surface for abutting or sticking to the turntable seat is formed on a side of the turntable facing the turntable seat; an elastic component, used for pushing the turntable to move in a direction perpendicular to the flange surface; and A hydraulic actuator, comprising a hydraulic cylinder fixedly arranged in the rotary chamber and a piston for pushing the elastic component to compress the elastic component, the piston being slidably arranged in the hydraulic cylinder, and the elastic component being connected to the piston; When the liquid working medium in the hydraulic cylinder is pressurized to push the piston to compress the elastic component, the flange surface disengages from the turntable seat to unlock the turntable; when the liquid working medium in the hydraulic cylinder is depressurized, the elastic component pushes the turntable to move to a position where the flange surface abuts against or rests on the turntable seat, so that the turntable is in a locked and non-rotating state.

2. The automatic locking turntable mechanism according to claim 1, characterized in that: The elastic component includes a fixing seat fixedly connected to the turntable seat or the hydraulic cylinder and a disc spring connected to the fixing seat. The disc spring is connected to the piston so that the piston can push the disc spring to be in a compressed state.

3. The automatic locking turntable mechanism according to claim 2, characterized in that: The disc spring is located in the rotary cavity, and the disc spring is sleeved on the periphery of the rotary support.

4. The automatic locking turntable mechanism according to claim 2, characterized in that: The cross section of the piston is T-shaped. The piston includes a piston sleeve extending axially and a piston body extending radially outward from one end of the piston sleeve close to the disc spring. The swivel support is inserted in the piston sleeve, and the piston body abuts against the disc spring.

5. The automatic locking turntable mechanism according to claim 4, characterized in that: A first sealing ring is provided at the connection between the piston sleeve and the hydraulic cylinder; or a second sealing ring is provided at the connection between the piston body and the hydraulic cylinder.

6. The automatic locking turntable mechanism according to claim 1, characterized in that: The position of the swivel support close to the turntable is rotatably connected to the turntable seat via a first bearing, and the position of the swivel support away from the turntable is rotatably connected to the turntable seat via a second bearing.

7. The automatic locking turntable mechanism according to claim 1, characterized in that: The automatic locking turntable mechanism also includes a motor for driving the turntable to rotate, and the motor is connected to the rotating support.

8. The automatic locking turntable mechanism according to claim 7, characterized in that: A reducer transition seat is provided between the motor and the slewing support. The automatic locking turntable mechanism also includes a reducer for transmitting the torque output by the motor to the slewing support. The reducer is installed on the reducer transition seat. The input end of the reducer is transmission-connected to the output shaft of the motor, and the output end of the reducer is transmission-connected to the slewing support.

9. The automatic locking turntable mechanism according to any one of claims 1 to 8, characterized in that: A rotation-stopping surface for the flange surface to abut against or stick to is provided on the turntable seat at a position corresponding to the flange surface, and a stop plate is provided on the rotation-stopping surface.

10. A grinding machine, characterized in that: It comprises the automatic locking turntable mechanism as described in any one of claims 1 to 9.

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