High static load digital mobile positioning device

Abstract

The utility model discloses a kind of high static load numerical control mobile positioning device, belong to numerical control mobile positioning equipment technical field. Including shell, driving device, linear motion mechanism and brake, the driving device is installed in the shell, the linear motion mechanism is installed on the shell, the brake is used for the brake of the driving device or linear motion mechanism, the driving device can drive the linear motion mechanism output linear motion. Solve the technical problem that traditional numerical control mobile positioning device exists and uses larger servo driving system to realize high static load, causing cost is high, space is occupied more and high energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of CNC mobile positioning equipment technology, and in particular to a high static load CNC mobile positioning device. Background Technology

[0002] A CNC linear positioning device is a servo motion mechanism directly controlled by the NC system in a CNC system. It can be used for workpiece movement and positioning, with typical applications including linear axes (X / Y / Z) or rotary axes (A / B / C) in machining centers. The maximum dynamic and static loads of traditional CNC linear positioning axes are calculated based on the maximum output torque of the servo motor, using reduction ratios from reducers and other mechanisms. The maximum dynamic and static loads of traditional CNC linear positioning axes are generally similar. In automated machining of automotive white models, the workpiece needs to be mounted on a traditional CNC linear positioning axis for movement and positioning. The load acting on the CNC linear positioning axis during workpiece movement is the dynamic load. The combined load acting on the CNC linear positioning axis after the workpiece is in place and during machining, forming an additional force on the workpiece, is the static load, which is generally greater than the dynamic load. Traditional CNC linear positioning axes require a larger servo drive system to handle high static loads. Traditional solutions suffer from the following problems: 1. Large servo drive systems result in high costs and require significant space; 2. The servo drive system is constantly operational, leading to high energy consumption. Therefore, improvements are needed to the traditional CNC linear positioning axes to address these issues. Utility Model Content

[0003] The purpose of this invention is to address the above-mentioned problems by providing a high static load CNC mobile positioning device, which solves the technical problems of high cost, large space occupation, and high energy consumption caused by the use of large servo drive systems to achieve high static load in traditional CNC mobile positioning devices.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A high static load CNC mobile positioning device includes a housing, a drive unit, a linear motion mechanism, and a brake. The drive unit is installed inside the housing, the linear motion mechanism is installed on the housing, and the brake is used to brake the drive unit or the linear motion mechanism. The drive unit can drive the linear motion mechanism to output linear motion.

[0006] Furthermore, the housing is a vertically arranged housing, the driving device is a first servo motor, the lower part of the vertical housing is provided with a reduction chamber, and a plurality of reduction gears are provided in the reduction chamber. The first servo motor drives the linear motion mechanism to move through the plurality of reduction gears. The brake is installed at the output end of the first servo motor, and one end face of the brake is fixedly connected to the vertical housing.

[0007] Furthermore, the upper part of the vertical housing is provided with a first mounting cavity that opens to one side. The linear motion mechanism is a vertically arranged first linear motion mechanism, which includes a first lead screw, a first linear motion seat, and a first slide rail. The first lead screw is vertically and rotatably disposed in the first mounting cavity. The first linear motion seat is screwed onto the first lead screw. The first slide rail is vertically mounted on one side of the first mounting cavity. The side of the first linear motion seat is slidably engaged with the first slide rail.

[0008] Furthermore, a first flexible dustproof structure is provided at the side opening of the first mounting cavity.

[0009] Furthermore, both the first servo motor and the brake are mounted above the deceleration chamber.

[0010] Furthermore, the brake is a first electromagnetic brake, which is in a braking state when de-energized.

[0011] Furthermore, the housing is a horizontally arranged housing with a second mounting cavity, and the driving device is installed at one end inside the second mounting cavity; the linear motion mechanism is a horizontally arranged second linear motion mechanism, which includes a second lead screw, a second linear motion seat, and a second slide rail. The second lead screw is horizontally and rotatably arranged in the second mounting cavity, the second linear motion seat is screwed onto the second lead screw, the second slide rail is horizontally installed on the horizontal housing, and the side of the second linear motion seat is slidably engaged with the second slide rail; the brake is installed at the end of the second mounting cavity, and the brake is simultaneously connected to the end of the second lead screw and can be used to brake the second lead screw.

[0012] Furthermore, the driving device is a second servo motor, which drives the second lead screw to rotate through a synchronous belt structure. The second servo motor and the second lead screw are arranged in parallel.

[0013] Furthermore, a rigid top cover structure is provided on the upper part of the horizontal housing, and a second flexible dustproof structure is provided on the side of the horizontal housing.

[0014] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows:

[0015] 1. In use, this utility model allows for the installation of a workpiece fixture on the linear motion output end of a linear motion mechanism. A drive device drives the linear motion mechanism, moving the workpiece fixture to the workpiece clamping position. The workpiece is then mounted on the fixture, moved to the machining station for processing, and finally moved to the removal station, completing the processing of one workpiece for use. The cycle repeats until the next workpiece is processed. By incorporating a brake, when the workpiece moves to the machining station, the brake keeps the entire device stationary. This allows the device to maintain a static load while remaining stationary, achieving a higher static load than dynamic load. Simultaneously, the drive device can be stopped, reducing the overall energy consumption of the device. This solves the technical problems of traditional CNC mobile positioning devices, which use large servo drive systems to achieve high static loads, resulting in high cost, large space occupation, and high energy consumption.

[0016] 2. This utility model can be vertically positioned to meet the requirements for vertical movement and positioning. In the vertical state, the first flexible dustproof structure can prevent dust and dirt from entering the internal structure of the device, thereby improving the service life of the device. The first servo motor and brake are both installed above the deceleration chamber, so that the space occupied by the first servo motor and brake in the vertical direction coincides with that of the linear motion mechanism, increasing the proportion of the effective vertical stroke of the device relative to the overall height of the device.

[0017] 3. This utility model can be horizontally configured to meet the requirements for horizontal movement and positioning. The second servo motor and the second lead screw are arranged side-by-side, allowing them to occupy the same horizontal space, thus increasing the proportion of the effective horizontal stroke relative to the overall height of the device. A rigid top cover provides high-strength protection for the upper surface of the device, effectively blocking impurities such as welding slag and even allowing the operator to step on it. A second flexible dustproof structure provides dust protection for the sides of the device. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present invention;

[0019] Figure 2 This is a cross-sectional view of the internal structure of Embodiment 1 of this utility model;

[0020] Figure 3 This is a bottom horizontal cross-sectional view of Embodiment 1 of the present invention;

[0021] Figure 4 This is a cross-sectional view of the vertical shell portion of Embodiment 1 of this utility model;

[0022] Figure 5 This is a structural diagram of the first linear motion seat in Embodiment 1 of this utility model.

[0023] Figure 6 This is a three-dimensional structural diagram of Embodiment 2 of the present invention;

[0024] Figure 7 This is a cross-sectional view of the internal structure of Embodiment 2 of this utility model;

[0025] Figure 8 This is a cross-sectional view of Embodiment 2 of the present invention;

[0026] Figure 9 This is a three-dimensional view of part of the structure of Embodiment 2 of this utility model;

[0027] Figure 10 This is a structural diagram of the second linear motion seat in Embodiment 2 of this utility model.

[0028] Figure 11 This is a diagram of the connection structure of the movable end of the second flexible strip in Embodiment 2 of this utility model.

[0029] In the attached diagram, a1-vertical housing, a2-first servo motor, a3-first linear motion mechanism, a4-first electromagnetic brake, a5-reduction gear, a6-first flexible dustproof structure, a7-rotating bearing, a8-first wire guide, a11-reduction chamber, a12-first mounting chamber, a13-load-bearing plate, a14-bearing mounting hole, a15-step ring, a16-vertical groove, a17-foot flange, a21-dust cover, a31-first lead screw, a32-first linear motion seat, a33-first slide rail, a34-first slider, a35-annular buffer pad, a61-first flexible belt, a62-upper misaligned guide post assembly, a63-lower misaligned guide post assembly, a71-fixed cover, a72-transition ring, a321-relief groove, a322-first mounting flange.

[0030] b1-Horizontal housing, b2-Second servo motor, b3-Second linear motion mechanism, b4-Second electromagnetic brake, b5-Synchronous belt structure, b6-Rigid top cover structure, b7-Second flexible dustproof structure, b8-Leaving opening, b11-Second mounting cavity, b12-First horizontal groove, b13-Second mounting hole, b31-Second lead screw, b32-Second linear motion seat, b33-Second slide rail, b34-Second slider, b61-Suspension rod, b62-Cover plate, b63-Connector, b71-Second flexible belt, b72-Left misaligned guide post assembly, b73-Right misaligned guide post assembly, b74-Clamping plate, b75-Elastic element, b321-Second horizontal groove, b322-Second mounting flange, b323-First mounting hole. Detailed Implementation

[0031] The specific implementation of the utility model will be further described below with reference to the accompanying drawings.

[0032] In the description of this utility model, it should be understood that the terms "center", "length", "width", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] Example 1

[0036] Please see Figures 1 to 5 A high static load CNC mobile positioning device includes a housing, a drive unit, a linear motion mechanism, and a brake. The drive unit is installed inside the housing, the linear motion mechanism is installed on the housing, and the brake is used to brake the drive unit. The drive unit can drive the linear motion mechanism to output linear motion. Specifically, the housing is a vertically arranged vertical housing a1, the drive unit is a first servo motor a2, and a reduction chamber a11 is provided at the lower part of the vertical housing a1. Several reduction gears a5 are arranged in the reduction chamber a11, and the reduction gears a5 are rotatably connected to the vertical housing a1. The reduction gears a5 mesh with each other in sequence. The first servo motor a2 drives the linear motion mechanism to move through the several reduction gears a5. A brake is installed at the output end of the first servo motor a2, and one end face of the brake is fixedly connected to the vertical housing a1. A first guide wire a8 is provided on the outside of the vertical housing a1.

[0037] In this embodiment, the upper part of the vertical housing a1 is provided with a first mounting cavity a12 opening to one side. The linear motion mechanism is a vertically arranged first linear motion mechanism a3, which includes a first lead screw a31, a first linear motion seat a32, and a first slide rail a33. The first lead screw a31 is vertically and rotatably disposed in the first mounting cavity a12. The first linear motion seat a32 is screwed onto the first lead screw a31. The first slide rail a33 is vertically mounted on one side of the first mounting cavity a12, and the side of the first linear motion seat a32 is slidably engaged with the first slide rail a33. Specifically, vertical grooves a16 are provided on both sides of the first mounting cavity a12, and the first slide rail a33 is installed on both sides of the first mounting cavity a12. Several first sliders a34 are provided on each side of the first linear motion seat a32, and both sides of the first linear motion seat a32 are slidably engaged with the first slide rail a33 through the first sliders a34. A first mounting portion extending from the first mounting cavity a12 is provided on one side of the first linear motion seat a32. A clearance groove a321 is provided in the middle of one side of the first mounting portion, and first mounting flanges for mounting are provided on both sides of the clearance groove a321. a322.

[0038] In this embodiment, a first flexible dustproof structure a6 is provided at the side opening of the first mounting cavity a12. Specifically, the first flexible dustproof structure a6 includes a first flexible belt a61, an upper misaligned guide post group a62, and a lower misaligned guide post group a63. The first flexible belt a61 is tightly sealed at the side opening of the first mounting cavity a12. The upper end of the first flexible belt a61 is fixedly connected to the upper part of the vertical housing a1, and the lower end of the first flexible belt a61 is fixedly connected to the lower part of the vertical housing a1. The upper misaligned guide post group a62 is located at the upper end of the first linear motion seat a32, and the lower misaligned guide post group a63 is located at the lower end of the first linear motion seat a32. The upper misaligned guide post group a62 includes two upper rotating posts with parallel axes, which are misaligned. The lower misaligned guide post group a63 includes two lower rotating posts with parallel axes, which are misaligned. The first flexible belt a61 wraps around the upper rotating posts and the lower rotating posts and is attached to the relief groove a321.

[0039] In this embodiment, both the first servo motor a2 and the brake are mounted above the reduction chamber a11. The first servo motor a2 is covered with a dust cover a21. The brake is a first electromagnetic brake a4, which is de-energized when braking and energized when braking is released.

[0040] In this embodiment, a first mounting cavity a12 is provided on the upper part of the vertical housing a1, and a load-bearing plate a13 is provided on the lower part of the first mounting cavity a12. A load-bearing rotating bearing a7 is provided on the load-bearing plate a13. The first linear motion mechanism a3 includes a first lead screw a31, a first linear motion seat a32, and a first slide rail a33. The first lead screw a31 is vertically disposed in the first mounting cavity a12. The upper end of the first lead screw a31 is rotatably connected to the vertical housing a1. The lower vertical part of the first lead screw a31 is inserted into the rotating bearing a7 and rotates relative to the load-bearing plate a13. The first linear motion seat a32 is screwed onto the first lead screw a31. The first slide rail a33 is vertically disposed on one side of the first mounting cavity a12. The side part of the first linear motion seat a32 is slidably engaged with the first slide rail a33. A driving device drives the first lead screw a31 to rotate.

[0041] In this embodiment, the load-bearing plate a13 is provided with a bearing mounting hole a14, and a stepped ring a15 is provided at the lower part of the bearing mounting hole a14. The rotating bearing a7 is installed in the bearing mounting hole a14, and the lower end face of the outer ring of the rotating bearing a7 abuts against the stepped ring a15. The rotating bearing a7 is an angular contact ball bearing. A fixing cover a71 is provided at the upper part of the bearing mounting hole a14, and the lower end face of the fixing cover a71 abuts against the upper end face of the outer ring of the rotating bearing a7. A step is provided at the lower part of the first lead screw a31, and the step abuts against the upper end face of the inner ring of the rotating bearing a7. The step of the first lead screw a31 abuts against the upper end face of the inner ring of the rotating bearing a7 through a transition ring a72. An annular buffer pad a35 is sleeved on the first lead screw a31, and the annular buffer pad a35 is located on the upper end face of the fixing cover a71.

[0042] In this embodiment, both sides of the lower part of the vertical shell a1 are provided with foot flanges a17, and the lower part of the foot flanges a17 is provided with several mounting screw holes. The vertical shell a1, the load-bearing plate a13 and the foot flanges a17 are integrally formed. Specifically, the vertical shell a1 is integrally cast.

[0043] Example 2

[0044] Please see Figures 6 to 11A high static load CNC mobile positioning device includes a housing, a drive unit, a linear motion mechanism, and a brake. The drive unit is installed inside the housing, the linear motion mechanism is installed on the housing, the brake is used to brake the linear motion mechanism, and the drive unit can drive the linear motion mechanism to output linear motion. Specifically, the housing is a horizontally arranged horizontal housing b1, and the horizontal housing b1 is provided with a second mounting cavity b11. The drive device is installed at one end inside the second mounting cavity b11. The linear motion mechanism is a horizontally arranged second linear motion mechanism b3, which includes a second lead screw b31, a second linear motion seat b32, and a second slide rail b33. The second lead screw b31 is horizontally and rotatably arranged in the second mounting cavity b11. The second linear motion seat b32 is screwed onto the second lead screw b31. The second slide rail b33 is horizontally installed on the horizontal housing b1, and the side of the second linear motion seat b32 is slidably engaged with the second slide rail b33. The brake is installed at the end of the second mounting cavity b11 and is simultaneously connected to the end of the second lead screw b31 and can be used to brake the second lead screw b31.

[0045] In this embodiment, the driving device is a second servo motor b2. The second servo motor b2 drives the second lead screw b31 to rotate through the synchronous belt structure b5. The second servo motor b2 and the second lead screw b31 are arranged in parallel.

[0046] In this embodiment, the side wall of the second mounting cavity b11 is provided with a first horizontal groove b12, and the second slide rail b33 is horizontally mounted on the first horizontal groove b12, with the lower end plane of the second slide rail b33 connected to the bottom surface of the first horizontal groove b12. The side of the second linear motion seat b32 is slidably engaged with the second slide rail b33. Specifically, both sides of the horizontal housing b1 are provided with first horizontal grooves b12, and the second slide rail b33 is installed in each of the first horizontal grooves b12. Both sides of the second linear motion seat b32 are provided with second sliders b34, and the second linear motion seat b32 is engaged with the second slide rail b33 through the second sliders b34. The second linear motion seat b32 is provided with a second horizontal groove b321, and the second slider b34 is installed in the second horizontal groove b321, with the top surface of the second horizontal groove b321 abutting against the upper end surface of the second slider b34. Each of the second horizontal grooves 321 has a pair of second sliders b34, with one second slider b34 at each end of the second horizontal groove b321. The upper surface of the second linear motion seat b32 has second mounting flanges b322 on both sides. The second mounting flanges b322 have first mounting holes b323, and the bottom surface of the horizontal housing b1 has several sets of second mounting holes b13. The first mounting holes b323 can be mated with the second mounting holes b13 for installation.

[0047] In this embodiment, a rigid top cover structure b6 is provided on the upper part of the horizontal housing b1, and a second flexible dustproof structure b7 is provided on the side of the horizontal housing b1. The rigid top cover structure b6 covers the second mounting cavity b11 of the horizontal housing b1, and a clearance opening b8 is provided between the lower end face of the rigid top cover structure b6 and the side of the second mounting cavity b11. The side of the second linear motion mechanism b3 extends out from the clearance opening b8 and forms an extended end. The upper end face of the extended end forms a mounting surface, and the second flexible dustproof structure b7 seals the clearance opening b8.

[0048] Specifically, the rigid top cover structure b6 includes a pair of suspension rods b61 and cover plates b62. The suspension rods b61 are suspended above both sides of the second mounting cavity b11, and both ends of the suspension rods b61 are fixedly connected to both ends of the horizontal housing b1. The cover plates b62 are mounted on the suspension rods b61. The suspension rods b61 are spaced apart from the upper ends of the side walls of the horizontal housing b1 to form clearance openings b8. The rigid top cover structure b6 also includes several connectors b63, which are arranged alternately between the suspension rods b61, and each end of the connector b63 is connected to a suspension rod b61. The cover plates b62 are segmented, and the connection points of adjacent cover plates b62 are located above the connectors b63.

[0049] Specifically, the second flexible dustproof structure b7 includes a second flexible belt b71, a left misaligned guide post group b72, and a right misaligned guide post group b73. The second flexible belt b71 is tightly sealed at the clearance opening b8 of the second mounting cavity b11. The left misaligned guide post group b72 is located at the left end of the extended end of the second linear motion seat b32, and the right misaligned guide post group b73 is located at the right end of the extended end of the second linear motion seat b32. The left misaligned guide post group b72 includes two left rotating posts with parallel axes, which are misaligned. The right misaligned guide post group b73 includes two right rotating posts with parallel axes, which are misaligned. The second flexible belt b71 passes through the left and right rotating posts and is attached to the outer wall of the extended end. Both sides of the horizontal housing b1 are provided with clearance openings b8, and the second linear motion seat b32 is provided with protruding ends extending through the two clearance openings b8 respectively; both clearance openings b8 are provided with a second flexible dustproof structure b7. One end of the second flexible belt b71 is set as a fixed end, which is fixedly connected to the flat housing; the other end of the second flexible belt b71 is set as a movable end, which is connected by an elastic element b75 to keep the second flexible belt b71 taut. The movable ends of the two second flexible belts b71 are provided with clamping plates b74, and the second flexible belts b71 are connected to the elastic elements b75 through the clamping plates b74. One end of the clamping plate b74 is used to clamp the movable end of the second flexible belt b71, and the two clamping plates b74 are connected to each other through the elastic element b75. The elastic element b75 is a spring, and the end of the spring is hung on the clamping plate b74.

[0050] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A high static load CNC mobile positioning device, characterized in that: It includes a housing, a drive unit, a linear motion mechanism, and a brake. The drive unit is installed inside the housing, the linear motion mechanism is installed on the housing, and the brake is used to brake the drive unit or the linear motion mechanism. The drive unit can drive the linear motion mechanism to output linear motion.

2. The high static load CNC mobile positioning device according to claim 1, characterized in that: The housing is a vertically arranged housing, the driving device is a first servo motor, the lower part of the vertical housing is provided with a reduction chamber, and a plurality of reduction gears are provided in the reduction chamber. The first servo motor drives the linear motion mechanism to move through the plurality of reduction gears. The brake is installed at the output end of the first servo motor, and one end face of the brake is fixedly connected to the vertical housing.

3. The high static load CNC mobile positioning device according to claim 2, characterized in that: The upper part of the vertical housing is provided with a first mounting cavity that opens to one side. The linear motion mechanism is a vertically arranged first linear motion mechanism, which includes a first lead screw, a first linear motion seat, and a first slide rail. The first lead screw is vertically and rotatably arranged in the first mounting cavity. The first linear motion seat is screwed onto the first lead screw. The first slide rail is vertically installed on one side of the first mounting cavity. The side of the first linear motion seat is slidably engaged with the first slide rail.

4. The high static load CNC mobile positioning device according to claim 3, characterized in that: A first flexible dustproof structure is provided at the side opening of the first mounting cavity.

5. A high static load CNC mobile positioning device according to claim 3, characterized in that: The first servo motor and the brake are both mounted above the deceleration chamber.

6. The high static load CNC mobile positioning device according to claim 1, characterized in that: The brake is a first electromagnetic brake, and the first electromagnetic brake is in a braking state when de-energized.

7. A high static load CNC mobile positioning device according to claim 1, characterized in that: The housing is a horizontally arranged housing with a second mounting cavity. The driving device is installed at one end inside the second mounting cavity. The linear motion mechanism is a horizontally arranged second linear motion mechanism, which includes a second lead screw, a second linear motion seat, and a second slide rail. The second lead screw is horizontally and rotatably arranged in the second mounting cavity. The second linear motion seat is screwed onto the second lead screw. The second slide rail is horizontally installed on the horizontal housing, and the side of the second linear motion seat is slidably engaged with the second slide rail. The brake is installed at the end of the second mounting cavity and is simultaneously connected to the end of the second lead screw and can be used to brake the second lead screw.

8. A high static load CNC mobile positioning device according to claim 7, characterized in that: The driving device is a second servo motor, which drives the second lead screw to rotate through a synchronous belt structure. The second servo motor and the second lead screw are arranged in parallel.

9. A high static load CNC mobile positioning device according to claim 7, characterized in that: The upper part of the horizontal housing is provided with a rigid top cover structure, and the side of the horizontal housing is provided with a second flexible dustproof structure.

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