CN219444212U - Multipolar constraint numerical control turntable brake locking mechanism - Google Patents

Abstract

The utility model relates to the technical field of numerical control machine tools, in particular to a multipolar constraint numerical control turntable brake locking mechanism, which comprises a detachable brake cylinder body, wherein a mandrel is arranged in a middle hole of the brake cylinder body, a circular brake block, a fixing sheet, a piston and a brake ring are sequentially sleeved on the mandrel, one end of the brake cylinder body is connected with a circular cover plate, the brake block is positioned at the inner side end of the cover plate and is fixedly arranged on the mandrel, the fixing sheet is fixedly arranged at one end of the piston, which is close to the brake block, elastic pieces are uniformly distributed between one end of the piston, which is far away from the fixing sheet, and the brake cylinder body, the brake ring is clamped between the brake cylinder body and a bearing, the piston can push the fixing sheet to be abutted against the brake block to form a first locking structure, and the brake block can deform to clamp the mandrel to form a second locking structure. The utility model can realize emergency passive self-locking when the turntable is powered off, and has the function of actively controlling the locking of the turntable under normal operation conditions.

Description

Multipolar constraint numerical control turntable brake locking mechanism

Technical Field

The utility model relates to the technical field of numerical control machine tools, in particular to a multi-pole constraint numerical control turntable brake locking mechanism.

Background

Along with the continuous development of numerical control technology, the numerical control turntable becomes an important component part of a numerical control machining center, at present, a plurality of common brake locking mechanisms on the numerical control turntable are provided with a surrounding brake type and a disc brake type, and the two types of brake locking mechanisms can not enable the turntable to implement self-locking protection under the emergency of power failure, so that a rotating mechanism in a numerical control machine tool is easy to damage, the risk of collision exists, and the existing numerical control machine tool is high in price and high in production cost.

At present, a part of brake locking mechanisms such as a self-locking brake mechanism and a numerical control machine disclosed in China patent CN115070443A relate to the field of numerical control machines, and the self-locking brake mechanism comprises a circular brake gland, a brake cylinder body and a brake piston; after the first oil filling hole is filled with oil, the pressure of the first hydraulic cavity applies an outward thrust to the brake piston; after the second oil filling hole is filled with oil, the pressure of the second hydraulic cavity applies an inward thrust to the brake piston so that the inner end face of the brake gland, the brake pad and the fixing piece are separated from each other.

According to the technical scheme, the pressure state of the two sides of the piston is controlled through hydraulic oil, and the elastic piece, the brake block and the fixing piece are matched for completing self-locking under emergency situations such as power failure, but the number and the functions of the core brake structure of the self-locking mechanism are single, emergency passive self-locking can only be carried out, and the function of actively controlling the locking of the turntable is not achieved.

Disclosure of Invention

The utility model aims to provide a multi-pole constraint numerical control turntable brake locking mechanism, which enables a turntable to perform emergency passive self-locking when power is off and has the function of actively controlling the turntable to be locked under normal operation conditions.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a multipolar constrained's numerical control revolving stage brake locking mechanism, includes detachable brake cylinder body, brake cylinder body is ring form structure, wherein downthehole dabber that is equipped with, be connected through the bearing between dabber and the brake cylinder body, the spindle overlaps in proper order and is equipped with annular brake block, stationary blade, piston and brake ring, brake cylinder body one end is connected with annular apron, the brake block is located apron medial extremity and sets firmly in the spindle, the stationary blade sets firmly in the piston and is close to brake block one end, the piston is kept away from the equipartition between one end of stationary blade and the brake cylinder body has the elastic component, the elastic component can be along the flexible deformation of axial direction of dabber, the brake ring card is established between brake cylinder body and bearing, be equipped with two oilholes on the brake cylinder body, the lateral extremity of two oilholes extends to the brake cylinder body outside and is connected with outside hydraulic system, and the medial extremity of two oilholes forms the hydraulic pressure chamber respectively in one side of piston and brake ring, with the help of the internal pressure variation in hydraulic chamber, the piston can promote stationary blade butt brake block to constitute first locking structure, the brake block can take place the centre gripping dabber and constitute second locking structure.

On the basis of the technical scheme, the brake cylinder body comprises a first cylinder body and a second cylinder body which are distributed along the axial direction of the mandrel, and the first cylinder body and the second cylinder body are connected with each other through bolts.

On the basis of the technical scheme, the adjacent sides of the brake pad and the fixing piece are flat end face structures, and the flat end faces are used for mutually abutting to generate friction force and achieve a locking effect during relative movement.

On the basis of the technical scheme, the brake pad and the fixing piece are provided with heat dissipation holes.

On the basis of the technical scheme, a first sinking groove for accommodating the piston and a second sinking groove for accommodating the elastic piece are formed in the second cylinder body, the sinking directions of the first sinking groove and the second sinking groove are parallel to the axial direction of the mandrel, and the elastic piece adopts a disc spring.

On the basis of the technical scheme, the outer side end of the hydraulic cavity is provided with a sealing piece.

On the basis of the technical scheme, the longitudinal section cross section profile of the brake ring is of a T-shaped structure.

On the basis of the technical scheme, the two oil holes are a first oil hole and a second oil hole respectively, the inner side end of the first oil hole is communicated with a first hydraulic cavity positioned at one side of the piston, the first hydraulic cavity is positioned at one side of the piston away from the fixing piece, and the outer side end of the first oil hole is connected with an external negative pressure pipeline and is provided with a normally open electromagnetic valve; the inner side end of the second oil hole is communicated with a second hydraulic cavity positioned at one side of the brake ring, and the outer side end of the second oil hole is connected with an external positive pressure pipeline and provided with a normally open electromagnetic valve.

On the basis of the technical scheme, the sealing element adopts an O-shaped sealing ring and/or a Gellan ring.

Compared with the prior art, the utility model at least comprises the following advantages:

1. according to the utility model, two independent brake blocks and a brake ring are arranged to form a two-pole independent brake mechanism, wherein one brake block forms one brake extreme for locking operation in emergency situations, and the other brake ring forms the other brake extreme for locking operation of the turntable in normal situations, so that the brake locking mechanism can perform emergency passive self-locking when power is off, and has the function of actively controlling the locking of the turntable under normal operation conditions.

2. According to the utility model, the detachable brake cylinder body is arranged, so that the structures such as the brake pad, the fixing piece, the piston and the brake ring can be assembled in the brake cylinder body conveniently and flexibly, and each part is precisely matched in a relatively airtight and stable working environment, so that the influence of external factors on locking action is reduced, and the service life of the equipment structure is prolonged.

Drawings

FIG. 1 is a schematic perspective view of a brake locking mechanism according to an embodiment;

FIG. 2 is a schematic diagram of the explosive structure of FIG. 1;

FIG. 3 is a schematic view illustrating the mounting states of the brake pads and the fixing plates in FIG. 1;

FIG. 4 is a schematic illustration of the brake pad of FIG. 2;

FIG. 5 is a schematic view of the brake cylinder of FIG. 1;

FIG. 6 is a cross-sectional view of FIG. 5;

FIG. 7 is a cross-sectional view of FIG. 1;

fig. 8 is another cross-sectional view of fig. 1.

The drawing is marked: 1. a brake cylinder; 11. a first cylinder; 111. a first oil hole; 112. a second oil hole; 12. a second cylinder; 121. a first sink; 122. a second sink; 2. a cover plate; 3. a brake pad; 31. a mounting hole; 32. a heat radiation hole; 4. a fixing piece; 5. a piston; 6. a disc spring; 7. a brake ring; 8. a bearing; 9. a mandrel; a1, a first Gelai circle; a2, a second Gelai circle; b1, a first O-shaped sealing ring; b2, a second O-shaped sealing ring; c. a first hydraulic chamber; d. and a second hydraulic chamber.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; either mechanical or electrical, or direct or indirect via an intermediary, or a communication between two elements or an interaction between two elements, unless explicitly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Example 1:

referring to fig. 1-8, the embodiment discloses a multi-pole constraint numerical control turntable brake locking mechanism, which comprises a brake cylinder body 1, a cover plate 2, a brake pad 3, a fixing piece 4, a piston 5, an elastic piece, a sealing piece, a brake ring 7, a bearing 8 and a mandrel 9.

The brake cylinder 1 is in a circular ring structure, and holes are used for penetrating and assembling the mandrel 9, and the mandrel 9 is connected with the brake cylinder 1 through a bearing 8, wherein the brake cylinder 1 is taken as a main carrier in combination with fig. 1, 5 and 6. The brake cylinder 1 comprises a first cylinder 11 and a second cylinder 12 which are distributed along the axial direction of the mandrel 9, and the first cylinder 11 and the second cylinder 12 are connected with each other through bolts.

The directions of the first cylinder 11 to the second cylinder 12 are defined as the front-to-rear directions.

The bearing 8 is fitted to the rear end of the second cylinder 12, in this embodiment the bearing 8 is a deep groove ball bearing.

The first cylinder block 11 is internally provided with a first oil hole 111 and a second oil hole 112, and outer ends of the first oil hole 111 and the second oil hole 112 extend to the outside of the first cylinder block 11 for connection with an external hydraulic system.

The side of the second cylinder body 12, which is close to the first cylinder body 11, is provided with a first sinking groove 121 for accommodating the piston 5 and a second sinking groove 122 for accommodating the elastic element, the sinking directions of the first sinking groove 121 and the second sinking groove 122 are parallel to the axial direction of the mandrel 9, wherein the first sinking groove 121 is of an annular slotted hole structure, and the second sinking groove 122 is of a circular slotted hole structure.

Referring to fig. 2, the mandrel 9 is sequentially sleeved with a circular brake pad 3, a fixing piece 4, a piston 5 and a brake ring 7.

The front end of the first cylinder body 11 is fixedly connected with an annular cover plate 2 through bolts, the cover plate 2 is attached to the front side end face of the first cylinder body 11, and the cover plate 2 is used as a supporting reference body when being locked.

The brake block 3 is annular disk body structure, and it is located apron 2 inboard end and sets firmly on dabber 9 through the bolt, as shown in fig. 4, is central symmetry equipartition on the brake block 3 and has a plurality of mounting hole 31, and mounting hole 31 is used for inserting to establish the bolt and locks fixedly with dabber 9, and the mounting hole 31 outside equipartition has a plurality of louvre 32, and louvre 32 is hollow out structure for when the friction takes place for brake block 3 and stationary blade 4 to take place the face contact, dispel the heat, avoid brake block 3 high temperature and take place defect such as deformation, sintering easily.

The fixed sheet 4 is also of an annular disc structure, the structure of the fixed sheet is similar to that of the brake pad 3, the fixed sheet is fixedly arranged at one end of the piston 5 close to the brake pad 3, the adjacent sides of the fixed sheet 4 and the brake pad 3 after installation are of a flat end face structure, two flat end faces have overlapping coverage areas, and the flat end face structure is used for mutually abutting to generate friction force and realize a locking effect during relative movement.

The piston 5 is installed between the first cylinder 11 and the second cylinder 12, and the piston 5 is reciprocally movable in the axial direction (front-rear direction) of the spindle 9. When the piston 5 moves forwards, the fixing piece 4 can be pushed to be close to the brake pad 3 until being abutted together to form a locking state, when the piston 5 moves backwards, the fixing piece 4 can be driven to move backwards, contact between the fixing piece 4 and the brake pad 3 is released, and the constraint is released, so that the brake pad 3 can rotate along with the mandrel 9.

Elastic pieces are uniformly distributed between one end (the rear side end of the piston 5) of the piston 5, which is far away from the fixing piece 4, and the brake cylinder body 1, the elastic pieces can be deformed in a telescopic manner along the axial direction of the mandrel 9, and when the elastic pieces are stretched, the elastic deformation can generate a thrust force for pushing the piston 5 forwards, and the thrust force forms a locking driving force of the brake pad 3. It should be noted that, the elastic member in this embodiment adopts the disc spring 6, and the disc spring 6 is installed in the second sinking groove 122 in a unidirectional constraint manner, and in a free state, the length of the disc spring in the front-rear direction is greater than the depth of the second sinking groove 122, so that the disc spring can push the piston 5 to move forward.

Further, referring to fig. 7 and 8, the inner end of the first oil hole 111 is connected to a first hydraulic chamber c located on the front side (the upper end side in fig. 7) of the piston 5, the first hydraulic chamber c is located on the side of the piston 5 away from the fixing piece 4, and the outer end of the first oil hole 111 is connected to an external negative pressure pipeline and is provided with a normally open electromagnetic valve.

Therefore, in the implementation process, in the normal power-on state, the electromagnetic valve is in the closed state, hydraulic oil with proper pressure is filled in the first hydraulic cavity c, the pressure in the first hydraulic cavity c enables the disc spring 6 to be pressed backwards (downwards in fig. 7) and drives the fixing piece 4 to move backwards synchronously, so that the fixing piece 4 is separated from the brake pad 3, and the rotation of the mandrel 9 cannot be influenced by the restriction of the brake pad 3 in the closed state. When the condition of outage appears, this solenoid valve is opened, the outside discharge of the negative pressure of the inside hydraulic oil contact outside pipeline of first hydraulic pressure chamber c, at this moment, the pressure that dish spring 6 received disappears, take place outside (upwards in the figure 7) extension, promote piston 5 and drive stationary blade 4 antedisplacement (upwards in the figure 7) for stationary blade 4 butt is on brake block 3, and the laminating lock is dead to brake block 3, leads to dabber 9 unable continuation rotation, constitutes the automatic operation of first locking structure up to this, makes it can carry out emergent passive auto-lock when the outage.

In other embodiments, the outside of the first oil hole 111 may be directly connected to a hydraulic system or a pneumatic system in a negative pressure state, in which case, when oil or gas is cut off, the automatic operation of the first locking structure may be completed, and the emergency passive self-locking may be completed.

The brake ring 7 is clamped between the brake cylinder 1 and the bearing 8, the longitudinal section cross section profile of the brake ring 7 is of a T-shaped structure, after assembly, the inner side wall of the brake ring 7 is in clearance fit with the mandrel 9, a section of opposite thin-wall structure is arranged on the inner side wall of the brake ring 7, a second hydraulic cavity d is formed between the outer side of the thin-wall structure and the second cylinder 12, the second hydraulic cavity d is communicated with the second oil hole 112, and the outer side end of the second oil hole 112 is connected with an external positive pressure pipeline and is provided with a normally open electromagnetic valve.

Therefore, in the specific implementation process, in the normal power-on state, the electromagnetic valve is in a closed state, when the mandrel 9 needs to be actively operated manually, the electromagnetic valve is controlled to be opened by switching on and off, hydraulic oil in an external positive pressure pipeline can enter a second hydraulic cavity d through a second oil hole 112, the pressure of the second hydraulic cavity d is increased, the thin-wall structure deforms inwards, a clamping effect is generated on the mandrel 9 positioned at the inner side until the mandrel 9 cannot continuously rotate, the movement of the second locking structure is completed, and the function of actively controlling the turntable to be locked under the normal operation condition is also achieved.

Further, in order to improve the sealing performance of the chamber, a sealing piece is arranged at the outer side end of the hydraulic chamber. The sealing member in this embodiment adopts a gray ring and an O-ring, specifically, includes a first gray ring a1 and a second gray ring a2 located at two sides of a first hydraulic chamber c, and a first O-ring b1 and a second O-ring b2 located at two sides of a second hydraulic chamber d.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (9)

1. The utility model provides a multipolar constraint's numerical control revolving stage brake locking mechanism, its characterized in that includes detachable brake cylinder body (1), brake cylinder body (1) is ring form structure, wherein is equipped with dabber (9) in the hole, be connected through bearing (8) between dabber (9) and brake cylinder body (1), the cover is equipped with annular brake block (3), stationary blade (4), piston (5) and brake ring (7) on dabber (9) in proper order, brake cylinder body (1) one end is connected with annular apron (2), brake block (3) are located apron (2) inboard end and set firmly on dabber (9), stationary blade (4) set firmly in piston (5) one end near brake block (3), the one end that stationary blade (4) were kept away from to piston (5) has the elastic component between brake cylinder body (1), the elastic component can be along the flexible deformation of the axial direction of dabber (9), brake ring (7) card is established between brake cylinder body (1) and bearing (8), be equipped with two oilholes on brake cylinder body (1) and extend to the hydraulic pressure system outside one side that two outside and brake cylinder body (5) are connected to one side outside with the hydraulic pressure chamber (5) respectively, the piston (5) can push the fixing piece (4) to abut against the brake pad (3) to form a first locking structure, and the brake pad (3) can deform to clamp the mandrel (9) to form a second locking structure.

2. The multi-pole constrained numerical control turntable brake locking mechanism according to claim 1, wherein the brake cylinder (1) comprises a first cylinder (11) and a second cylinder (12) distributed along the axial direction of the mandrel (9), and the first cylinder (11) and the second cylinder (12) are connected with each other through bolts.

3. The multi-pole constraint numerical control rotary table brake locking mechanism according to claim 1, wherein the adjacent sides of the brake pad (3) and the fixing piece (4) are flat end surfaces, and the flat end surfaces are used for mutually abutting to generate friction force and realize a locking effect during relative movement.

4. A multi-pole constrained digital control turntable brake locking mechanism according to claim 3, characterized in that the brake pad (3) and the stator (4) are provided with heat dissipation holes (32).

5. The multi-pole constrained numerical control rotary table brake locking mechanism according to claim 2, wherein a first sinking groove (121) for accommodating a piston (5) and a second sinking groove (122) for accommodating an elastic member are arranged inside the second cylinder body (12), the sinking directions of the first sinking groove (121) and the second sinking groove (122) are parallel to the axial direction of the mandrel (9), and the elastic member adopts a disc spring (6).

6. The multipole-constrained numerical control turntable brake locking mechanism of claim 1, wherein a sealing member is arranged at the outer end of the hydraulic chamber.

7. The multi-pole constrained numerical control turntable brake locking mechanism according to claim 1, wherein the longitudinal cross section profile of the brake ring (7) is of a T-shaped structure.

8. The multi-pole constraint numerical control rotary table brake locking mechanism according to claim 1, wherein the two oil holes are a first oil hole (111) and a second oil hole (112) respectively, the inner side end of the first oil hole (111) is communicated with a first hydraulic cavity (c) positioned at one side of a piston (5), the first hydraulic cavity (c) is positioned at one side of the piston (5) far away from a fixed sheet (4), and the outer side end of the first oil hole (111) is connected with an external negative pressure pipeline and is provided with a normally open electromagnetic valve; the inner side end of the second oil hole (112) is communicated with a second hydraulic cavity (d) positioned at one side of the brake ring (7), and the outer side end of the second oil hole (112) is connected with an external positive pressure pipeline and is provided with a normally open electromagnetic valve.

9. The multipole-constrained digitally controlled turret brake locking mechanism of claim 6, wherein the seal member is an O-ring and/or a gurley ring.