High-precision motion linear motor double-drive gantry device

Abstract

The utility model discloses a high accuracy motion linear motor double -drive gantry device, contain: a pair of stand, crossbeam, a pair of first grating encoder and second grating encoder, wherein a pair of stand parallelly arranged, and install longitudinal sliding table subassembly, plane guide rail, side guide rail and longitudinal linear motor on the stand, the crossbeam is aluminum profile, and two ends are fixedly connected with a pair of longitudinal sliding table subassembly on a pair of stand respectively, and the crossbeam side installs horizontal sliding table subassembly, a pair of horizontal guide rail and horizontal linear motor, a pair of first grating encoder is used for detecting the longitudinal motion of crossbeam, and second grating encoder is used for detecting the horizontal motion of horizontal sliding table subassembly, the utility model solves the problem of low positioning accuracy, poor synchronism and inconvenient movement of traditional gantry mechanism, through the design of "double linear motor drive + composite guide rail support + full stroke grating feedback + integrated workstation", realizes high accuracy motion control and nimble operation.

Description

Technical Field

[0001] This utility model relates to the field of high-precision automated motion equipment technology, and in particular to a high-precision motion linear motor dual-drive gantry device. Background Technology

[0002] In high-precision automated equipment, the gantry motion mechanism is the core component for achieving large-stroke, high-load motion. Its positioning accuracy and motion stability directly determine the overall performance of the equipment. Traditional gantry mechanisms mostly use a "ball screw + single drive" transmission method, which has the following shortcomings: 1. Ball screw drives are subject to mechanical wear, and after long-term use, backlash is likely to occur, leading to a decrease in positioning accuracy; 2. The single-drive structure is difficult to balance the motion synchronization at both ends of the crossbeam, and is prone to torsional deformation due to uneven force on the crossbeam, which affects the linearity of the motion. 3. Although some dual-drive gantry cranes use linear motors, their guide rail support structure is simple (such as using only flat guide rails), and the slide table is prone to deviation or shaking during movement. Utility Model Content

[0003] According to an embodiment of the present invention, a high-precision linear motor dual-drive gantry device is provided, comprising: A pair of columns are arranged in parallel. The columns are equipped with a longitudinal slide assembly, a planar guide rail, a side guide rail, and a longitudinal linear motor. The planar guide rail is installed on the top of the column. The side guide rail is installed on the side of the column. The longitudinal slide assembly is slidably connected to the planar guide rail and the side guide rail respectively. The longitudinal linear motor is connected to the longitudinal slide assembly and can drive the longitudinal slide assembly to reciprocate. The crossbeam is made of aluminum profile and is fixedly connected at both ends to a pair of longitudinal slide table assemblies on a pair of columns. A transverse slide table assembly, a pair of transverse guide rails and a transverse linear motor are installed on the side of the crossbeam. The pair of transverse guide rails are installed parallel to each other on one side of the crossbeam. The transverse slide table assembly is slidably connected to the pair of transverse guide rails. The transverse linear motor is connected to the transverse slide table assembly and can drive the transverse slide table assembly to reciprocate. A pair of first grating encoders, the grating scales of the pair of first grating encoders are respectively mounted on a pair of columns, and the reading heads of the pair of first grating encoders are respectively mounted on the longitudinal slide assembly on the corresponding columns; The second grating encoder has its grating scale mounted on the bottom of the crossbeam, and its reading head mounted on the transverse slide assembly.

[0004] Furthermore, the longitudinal slide assembly includes: a first slide block, a second slide block, and a first connecting plate; One end of the first slide block is slidably connected to the planar guide rail via a slider, and the other end is fixedly connected to the second slide block; the middle part of the first slide block is connected to the moving part of the longitudinal linear motor.

[0005] The second slide is L-shaped, and the reading head of the first grating encoder is mounted on the second slide; One end of the first connecting plate is fixedly connected to the first slide block, and the other end is fixedly connected to the crossbeam.

[0006] Furthermore, a first positioning step is provided at the bottom of the first slide block, which is used for positioning the second slide block.

[0007] Furthermore, a first mounting groove is provided at the bottom of the first slide block, the mover of the longitudinal linear motor is installed in the first mounting groove of the corresponding first slide block, and the stator is installed on the top of the column.

[0008] Furthermore, the transverse slide assembly includes: a transverse slide block and an anti-collision connecting block; The horizontal slide block is slidably connected to the horizontal guide rail via a slider; The reading head of the second grating encoder is installed at the bottom of the transverse slide; The anti-collision connecting block is fixedly connected to the transverse slide, and a rubber anti-collision component is provided at each of the left and right ends of the anti-collision connecting block.

[0009] Furthermore, a reinforcing plate is provided at each end of the crossbeam, and the reinforcing plates are fixedly connected to the crossbeam and the first connecting plate by screws.

[0010] Furthermore, a second positioning step is provided on the inner side of the reinforcing plate, and the second positioning step is in contact with the first connecting plate.

[0011] Furthermore, it also includes: a workbench, with a pair of columns mounted on the workbench.

[0012] Furthermore, the bottom of the workbench is equipped with several casters and several adjustable feet; a handle is provided on the side of the workbench; when it needs to be moved, the feet are adjusted so that they are off the ground, and the workbench can be moved.

[0013] Furthermore, the pulley is a brakeable omnidirectional pulley.

[0014] Furthermore, hydraulic buffers are installed at both ends of the column, which have good buffering performance and are used to protect the transverse slider.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. High transmission accuracy: It adopts longitudinal and transverse dual linear motor drive, with no mechanical wear and backlash, high transmission efficiency, and small accuracy decay after long-term use; 2. Stable support: The longitudinal slide assembly adopts bidirectional support of "planar guide rail + side guide rail", and the transverse slide assembly adopts support of double parallel transverse guide rails, which effectively avoids slide movement deviation or shaking and improves the linearity of movement; 3. Precise positioning: Equipped with "a pair of first grating encoders + second grating encoders", which provide real-time feedback on longitudinal and lateral movement positions respectively, achieving micron-level positioning accuracy and ensuring synchronous longitudinal movement at both ends of the crossbeam; 4. Reliable structure: The aluminum profile beams are lightweight and high-strength, and the design of the reinforcing plates and positioning steps improves the assembly accuracy and connection strength. The anti-collision parts protect the equipment from collision damage and extend its service life. 5. Easy installation and relocation: The integrated workbench incorporates adjustable legs and brake casters, allowing for quick leveling and flexible relocation to adapt to various work scenarios.

[0016] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0017] Figure 1 This is a perspective view schematic diagram according to an embodiment of the present utility model; Figure 2 for Figure 1 Enlarged view of point A; Figure 3 for Figure 1 Enlarged view of point B; Figure 4 for Figure 1 The main view; Figure 5 for Figure 1 Top view; Figure 6 This is a schematic diagram of the longitudinal slide assembly installed on the column according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the transverse slide assembly installed on the crossbeam according to an embodiment of the present utility model; Figure 8 This is a schematic diagram of the assembly between the longitudinal slide assembly, the reinforcing plate, and the reading head of the first grating ruler according to an embodiment of the present invention; Figure 9 for Figure 8 The right view. Detailed Implementation

[0018] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0019] First, combine Figures 1-9 The high-precision linear motor dual-drive gantry according to the embodiments of the present invention is used in scenarios with extremely high requirements for motion positioning accuracy, such as precision machining, electronic component testing, and semiconductor packaging, and can realize high-precision reciprocating motion control in both longitudinal and lateral directions.

[0020] like Figures 1-9 As shown in the figure, the high-precision linear motor dual-drive gantry device of this utility model has a core structure including a pair of columns 1, a crossbeam 2, a pair of first grating encoders 3 and second grating encoders 4. The connection relationship and function of each component are as follows: 1. Column 1 and longitudinal motion assembly like Figures 1-9 As shown, a pair of columns 1 are arranged in parallel, which are the supporting foundation of the entire gantry device; the column 1 integrates and installs the longitudinal slide assembly 11, the planar guide rail 12, the side guide rail 13 and the longitudinal linear motor 14 to form a longitudinal motion module.

[0021] The planar guide rail 12 is installed on the top of the column 1, and the side guide rail 13 is installed on the side of the column 1. The two are "vertically distributed" and together provide bidirectional support for the longitudinal slide assembly 11 to prevent the slide from deviating during movement. The longitudinal slide assembly 11 is slidably connected to the planar guide rail 12 and the side guide rail 13 through sliders to ensure smooth movement.

[0022] The longitudinal linear motor 14 is directly connected to the longitudinal slide assembly 11 and serves as the power source for longitudinal movement. It can drive the longitudinal slide assembly 11 to reciprocate along the column 1. Compared with the traditional ball screw, it has no mechanical wear and higher transmission accuracy.

[0023] 2. Crossbeam 2 and lateral motion assembly like Figure 1 , 3 As shown in ~5 and 7, the crossbeam 2 is made of aluminum profile, which has the characteristics of "lightweight" and "high strength" (the aluminum profile is extruded and has a small straightness error, which can reduce the influence of the crossbeam 2's own deformation on the accuracy). Its two ends are respectively fixedly connected to the longitudinal slide assembly 11 on a pair of columns 1, and move longitudinally synchronously with the longitudinal slide assembly 11.

[0024] A transverse slide assembly 21, a pair of transverse guide rails 22, and a transverse linear motor 23 are installed on the side of the crossbeam 2. The pair of transverse guide rails 22 are arranged in parallel. The transverse slide assembly 21 is slidably connected to the transverse guide rails 22 through a slider. The transverse linear motor 23 drives the transverse slide assembly 21 to reciprocate along the crossbeam 2 to achieve high-precision transverse movement.

[0025] 3. Grating encoder positioning assembly like Figure 6 As shown, a pair of first grating encoders 3 are used to provide feedback on the longitudinal movement position: their grating rulers 31 are fixed on a pair of columns 1 respectively, and the reading heads 32 are installed on the longitudinal slide assembly 11 of each column 1, which can detect the displacement of the longitudinal slide assembly 11 in real time and ensure that the longitudinal movement of both ends of the crossbeam 2 is synchronized.

[0026] like Figure 7As shown, the second grating encoder 4 is used to provide feedback on the lateral movement position: its grating ruler 41 is installed at the bottom of the crossbeam 2, and its reading head 42 is installed on the lateral slide assembly 21, which can accurately detect the real-time displacement of the lateral slide assembly 21 and further improve the lateral positioning accuracy.

[0027] 4. Detailed Structure of Key Components like Figure 2 , 6 As shown in Figure 9, the longitudinal slide assembly 11 consists of a first slide 111, a second slide 112, and a first connecting plate 113. One end of the first slide 111 is connected to the planar guide rail 12 via a slider, and the other end is fixed to the L-shaped second slide 112. A first positioning step 1111 is provided at the bottom of the first slide 111 for precise positioning of the second slide 112 and to reduce assembly errors. A first mounting groove 1112 is provided in the middle of the first slide 111, and the mover of the longitudinal linear motor 14 is installed in the first mounting groove 1112, while the stator is correspondingly installed on the top of the column 1 to realize power transmission. One end of the first connecting plate 113 is connected to the first slide 111, and the other end is connected to the crossbeam 2 to ensure a stable connection between the crossbeam 2 and the longitudinal slide assembly 11.

[0028] like Figure 3 , 7 As shown, the transverse slide assembly 21 consists of a transverse slide block 211 and an anti-collision connecting block 212. The transverse slide block 211 is connected to the transverse guide rail 22 via a slider, and the reading head 42 of the second grating encoder 4 is installed at the bottom. The anti-collision connecting block 212 is fixed to the transverse slide block 211, and a rubber anti-collision component 2121 is provided at each of its left and right ends, which has good buffering performance and can prevent hard collisions when the transverse slide assembly 21 moves to both ends of the crossbeam 2, thus protecting the equipment.

[0029] like Figures 8-9 As shown, the reinforcement structure is as follows: a reinforcing plate 24 is provided at each end of the crossbeam 2, and the reinforcing plate 24 is fixed to the crossbeam 2 and the first connecting plate 113 respectively by screws; a second positioning step 241 is provided on the inner side of the reinforcing plate 24, which fits against the first connecting plate 113; the reinforcing plate 24 can improve the connection strength between the crossbeam 2 and the longitudinal slide assembly 11, while reducing the assembly gap and avoiding the crossbeam 2 from being torsional and deformed under stress.

[0030] Hydraulic buffers 15 are installed at both ends of the column 1, which have good buffering performance and are used to protect the transverse slide 211.

[0031] 5. Workbench Components The workbench 5 is the basic support component of the entire gantry mechanism. A pair of columns 1 are installed in parallel on the workbench 5 to form a stable gantry frame.

[0032] The bottom of the workbench 5 is equipped with several pulleys 51 and several adjustable feet 52: the pulleys 51 are universal wheels with braking function, which facilitates the overall movement of the equipment; the adjustable feet 52 adopt a screw-foot pad structure, which can adjust the level of the workbench 5 by rotating the screw, and support the overall weight when the equipment is fixed, so as to avoid the pulleys 51 from being worn by force.

[0033] The workbench 5 is equipped with a handle 53 on its side, which makes it easy to move the equipment and improves the ease of operation.

[0034] Working principle: 1. Longitudinal movement: The two longitudinal linear motors 14 receive instructions from the control system and start synchronously, driving the longitudinal slide assembly 11 to move along the guide rail of the column 1; the first grating encoder 3 provides real-time feedback on the displacement at both ends, and the control system controls the crossbeam 2 to move longitudinally with the longitudinal slide assembly 11. 2. Lateral movement: The lateral linear motor 23 drives the lateral slide assembly 21 to move along the guide rail of the crossbeam 2. The second grating encoder 4 provides real-time position feedback to achieve high-precision positioning. When the movement reaches both ends, the rubber anti-collision parts 2121 make buffer contact to avoid damage to the components. 3. Equipment movement: Release the brake of pulley 51 on the worktable, push the equipment to the target position using handle 53, lock the brake, and adjust the adjustable support leg 52 to ensure stability during operation.

[0035] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0036] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A high-precision motion linear motor double-drive gantry device, characterized in that, Include: A pair of columns are arranged in parallel. Each column is equipped with a longitudinal slide assembly, a planar guide rail, a side guide rail, and a longitudinal linear motor. The planar guide rail is installed on the top of the column. The side guide rail is installed on the side of the column. The longitudinal slide assembly is slidably connected to the planar guide rail and the side guide rail respectively. The longitudinal linear motor is connected to the longitudinal slide assembly and can drive the longitudinal slide assembly to reciprocate. A crossbeam, made of aluminum profile, is fixedly connected at both ends to a pair of longitudinal slide assemblies on a pair of columns; a transverse slide assembly, a pair of transverse guide rails, and a transverse linear motor are mounted on the side of the crossbeam; the pair of transverse guide rails are installed parallel to one side of the crossbeam; the transverse slide assembly is slidably connected to the pair of transverse guide rails; the transverse linear motor is connected to the transverse slide assembly and can drive the transverse slide assembly to reciprocate. A pair of first grating encoders, wherein the grating scales of the pair of first grating encoders are respectively mounted on the pair of columns, and the reading heads of the pair of first grating encoders are respectively mounted on the longitudinal slide assembly on the corresponding columns; The second grating encoder has its grating scale mounted on the bottom of the crossbeam and its reading head mounted on the transverse slide assembly.

2. The high-precision motion linear motor dual-drive gantry device of claim 1, wherein, The longitudinal slide assembly includes: a first slide block, a second slide block, and a first connecting plate; One end of the first slide block is slidably connected to the planar guide rail via a slider, and the other end is fixedly connected to the second slide block; the middle part of the first slide block is connected to the moving part of the longitudinal linear motor. The second slide is L-shaped, and the reading head of the first grating encoder is mounted on the second slide; One end of the first connecting plate is fixedly connected to the first slide block, and the other end is fixedly connected to the crossbeam.

3. The high-precision motion linear motor dual-drive gantry apparatus according to claim 2, characterized in that, The bottom of the first slide is provided with a first positioning step, which is used for positioning the second slide.

4. The high-precision motion linear motor dual-drive gantry apparatus according to claim 2, characterized in that, The first slide block has a first mounting groove at its first bottom. The moving part of the longitudinal linear motor is installed in the first mounting groove of the corresponding first slide block, and the stator is installed on the top of the column.

5. The high-precision motion linear motor dual-drive gantry apparatus of claim 2, wherein, A reinforcing plate is provided at each end of the crossbeam, and the reinforcing plate is fixedly connected to the crossbeam and the first connecting plate by screws.

6. The high-precision motion linear motor dual-drive gantry apparatus according to claim 5, characterized in that, The inner side of the reinforcing plate is provided with a second positioning step, which is in contact with the first connecting plate.

7. The high-precision motion linear motor dual-drive gantry apparatus of claim 1, wherein, The transverse slide assembly includes: a transverse slide block and an anti-collision connecting block; The transverse slide block is slidably connected to the transverse guide rail via a slider; The reading head of the second grating encoder is mounted on the bottom of the transverse slide; The anti-collision connecting block is fixedly connected to the transverse slide block, and a rubber anti-collision component is provided at each of the left and right ends of the anti-collision connecting block.

8. The high-precision motion linear motor dual-drive gantry apparatus of claim 1, wherein, It also includes: a workbench, on which the pair of columns are mounted.

9. The high-precision motion linear motor dual-drive gantry apparatus according to claim 8, characterized in that, The bottom of the workbench is equipped with several pulleys and several adjustable feet; the side of the workbench is equipped with a handle.

10. The high-precision motion linear motor dual-drive gantry apparatus of claim 1, wherein, Hydraulic buffers are installed at both ends of the column.

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