Positioning structure for machining and clamping high-precision guide rail

Abstract

The utility model relates to the related technical field of high-precision guide rails, and discloses a positioning structure for machining and clamping a high-precision guide rail, which is characterized in that a clamping positioning mechanism and an end part positioning mechanism can be driven by a gear to move along an annular positioning guide rail through the arrangement of the annular positioning guide rail; the clamping and positioning mechanism positions the middle of the high-precision annular guide rail, the end positioning mechanism positions the two ends of the high-precision annular guide rail, and the clamping and positioning mechanism and the end positioning mechanism can freely move on the annular positioning guide rail, so that the high-precision annular guide rails with different lengths can be clamped; according to the length of the high-precision annular guide rail, a plurality of high-precision annular guide rails can be clamped at the same time, the clamped and fixed high-precision annular guide rails can freely move along the annular positioning guide rail and are positioned, and therefore transfer of different stations can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field related to high-precision guide rails, in particular to a positioning structure for machining and clamping high-precision guide rails. Background Art

[0002] High-precision guide rails are mechanical components used in industrial and engineering applications to support and guide mechanical movement. They can provide highly precise linear motion with excellent smoothness and stability. The curved guide rails in high-precision guide rails are a special type of guide rail system used to provide highly precise linear motion on curved or arc-shaped tracks. Compared with traditional linear guide rails, curved high-precision guide rails can accurately position and move along curved paths. They are suitable for applications that require movement along an arc, such as laser cutting, CNC lathes, etc.

[0003] Compared with traditional linear guides, arc guides are more difficult to clamp and position during processing. Traditional clamping and positioning devices are difficult to use on arc guides. In addition, arc guides have high requirements for roundness during processing, and traditional positioning devices are difficult to ensure sufficient accuracy. Utility Model Content

[0004] The purpose of the utility model is to provide a high-precision guide rail processing clamping positioning structure, and the device is used to work, thereby solving the problem that traditional clamping and positioning devices are difficult to ensure sufficient accuracy when processing arc guide rails.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a high-precision guide rail machining clamping positioning structure, comprising an annular positioning guide rail, a clamping positioning mechanism, and an end positioning mechanism, wherein the clamping positioning mechanism and the end positioning mechanism are movably mounted on the annular positioning guide rail via a slider, and the clamping positioning mechanism and the end positioning mechanism cooperate to clamp the high-precision annular guide rail to be machined;

[0006] The clamping and positioning mechanism is fixedly connected to a first slider, which is slidably connected to the annular positioning guide rail. A first motor is fixedly connected to one side of the first slider. A first gear is fixedly connected to the transmission shaft of the first motor via a keyway. An annular rack is fixedly connected to the lower side of the annular positioning guide rail. The first gear and the annular rack are meshed with each other for transmission.

[0007] A second slider is fixedly connected to the end positioning mechanism, and the second slider is slidably connected to the annular positioning guide rail. A second motor is fixedly connected to one side of the second slider, and a second gear is fixedly connected to the transmission shaft of the second motor through a keyway, and the second gear and the annular rack are engaged with each other for transmission.

[0008] Furthermore, the clamping and positioning mechanism is clamped at the middle of the high-precision annular guide rail, and the end positioning mechanism is clamped at both ends of the high-precision annular guide rail.

[0009] Furthermore, the clamping and positioning mechanism includes a clamping frame, which is fixedly connected to the first slider, a first clamping block is fixedly connected to one side of the upper end of the clamping frame, a movable clamp is movably connected to one side of the clamping frame through a first rotating shaft, a second clamping block is fixedly connected to one side of the movable clamp, a clamping cylinder is movably connected to the lower side of the clamping frame through a second rotating shaft, and an output end of the clamping cylinder is movably connected to the movable clamp through a third rotating shaft.

[0010] Furthermore, the end positioning mechanism includes an end limiting bracket, the end limiting bracket is fixedly connected to the second slider, and one side of the end limiting bracket is fixedly connected to an end limiting block.

[0011] Furthermore, pressure sensors are provided between the clamping frame and the first clamping block and between the movable clamping jaws and the second clamping block, and a torque sensor is provided between the end limit bracket and the end limit block.

[0012] Furthermore, the first clamping block and the second clamping block are engaged with the grooves on both sides of the high-precision annular guide rail, and the first clamping block, the second clamping block and the end limit block are all made of nylon.

[0013] Furthermore, the first motor and the second motor are both reduction servo motors.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] The utility model proposes a positioning structure for clamping high-precision guide rail processing. Through the setting of the annular positioning guide rail, the clamping positioning mechanism and the end positioning mechanism can move along the annular positioning guide rail under the drive of the gear. The clamping positioning mechanism positions the middle part of the high-precision annular guide rail, and the end positioning mechanism positions the two ends of the high-precision annular guide rail. The clamping positioning mechanism and the end positioning mechanism can move freely on the annular positioning guide rail, so that high-precision annular guide rails of different lengths can be clamped, and multiple high-precision annular guide rails can be clamped at the same time according to the length of the high-precision annular guide rail. The multiple high-precision annular guide rails that are clamped and fixed can also move freely and be positioned along the annular positioning guide rail, so that the transfer of different workstations can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the clamping and positioning mechanism of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the end positioning mechanism of the utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the annular positioning guide rail and the high-precision annular guide rail of the utility model.

[0020] In the figure: 1. Annular positioning guide rail; 101. Annular rack; 2. Clamping and positioning mechanism; 201. First slider; 202. First motor; 203. First gear; 204. Clamping frame; 205. First clamping block; 206. First rotating shaft; 207. Movable clamping pliers; 208. Second clamping block; 209. Second rotating shaft; 210. Clamping cylinder; 211. Third rotating shaft; 212. Pressure sensor; 3. End positioning mechanism; 301. Second slider; 302. Second motor; 303. Second gear; 304. End limit bracket; 305. End limit block; 306. Torque sensor; 4. High-precision annular guide rail. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0023] Combine Figure 1-Figure 4 A positioning structure for clamping high-precision guide rail processing, including an annular positioning guide rail 1, a clamping positioning mechanism 2 and an end positioning mechanism 3, characterized in that: the clamping positioning mechanism 2 and the end positioning mechanism 3 are movably installed on the annular positioning guide rail 1 through a slider, the clamping positioning mechanism 2 and the end positioning mechanism 3 cooperate to clamp the high-precision annular guide rail 4 to be processed, the clamping positioning mechanism 2 is clamped in the middle of the high-precision annular guide rail 4, and the end positioning mechanism 3 is clamped at both ends of the high-precision annular guide rail 4, thereby limiting all degrees of freedom of the high-precision annular guide rail 4 without repeated positioning.

[0024] A first slider 201 is fixedly connected to the clamping and positioning mechanism 2, and the first slider 201 is slidably connected to the annular positioning guide rail 1. A first motor 202 is fixedly connected to one side of the first slider 201, and a first gear 203 is fixedly connected to the transmission shaft of the first motor 202 through a keyway. An annular rack 101 is fixedly connected to the bottom of the annular positioning guide rail 1, and the first gear 203 and the annular rack 101 are engaged with each other for transmission, so that the first motor 202 can drive the first gear 203 to rotate, and then the clamping and positioning mechanism 2 is driven to move along the annular positioning guide rail 1 through the engagement of the first gear 203 and the annular rack 101. The clamping and positioning mechanism 2 includes a clamping frame 204, which is fixedly connected to the first slider 201, and a first clamping block 205 is fixedly connected to one side of the upper end of the clamping frame 204. A movable clamping clamp 207 is movably connected to one side of the clamping frame 204 via a first rotating shaft 206, and a second clamping block 208 is fixedly connected to one side of the movable clamping clamp 207. A clamping cylinder 210 is movably connected to the lower side of the clamping frame 204 via a second rotating shaft 209. The output end of the clamping cylinder 210 is movably connected to the movable clamping clamp 207 via a third rotating shaft 211, so that the clamping cylinder 210 can push the movable clamping clamp 207 to rotate along the first rotating shaft 206, thereby clamping the high-precision annular guide rail 4 between the first clamping block 205 and the second clamping block 208.

[0025] A second slider 301 is fixedly connected to the end positioning mechanism 3, which is slidably connected to the annular positioning guide rail 1. A second motor 302 is fixedly connected to one side of the second slider 301. A second gear 303 is fixedly connected to the drive shaft of the second motor 302 via a keyway. The second gear 303 engages with the annular rack 101 for transmission. The end positioning mechanism 3 includes an end limit bracket 304, which is fixedly connected to the second slider 301. An end limit block 305 is fixedly connected to one side of the end limit bracket 304. This allows the second motor 302 to drive the second gear 303 to rotate, thereby driving the end positioning mechanism 3 to move along the annular positioning guide rail 1, thereby clamping the high-precision annular guide rail 4 from both ends.

[0026] Specifically, a pressure sensor 212 is provided between the clamping frame 204 and the first clamping block 205 and between the movable clamping clamp 207 and the second clamping block 208, and a torque sensor 306 is provided between the end limit bracket 304 and the end limit block 305, so as to monitor and adjust the clamping force of the clamping positioning mechanism 2 and the end positioning mechanism 3.

[0027] Specifically, the first clamping block 205 and the second clamping block 208 are engaged with the grooves on both sides of the high-precision annular guide rail 4 to prevent the high-precision annular guide rail 4 from flipping over. The first clamping block 205, the second clamping block 208 and the end limit block 305 are all made of nylon to prevent scratches on the high-precision annular guide rail 4.

[0028] Specifically, the first motor 202 and the second motor 302 are both reduction servo motors, which can provide sufficient control accuracy and clamping force.

[0029] Working principle: During use, first adjust the position of the clamping and positioning mechanism 2 according to the length of the high-precision annular guide rail 4, then set the high-precision annular guide rail 4 on the first clamping block 205 in the clamping and positioning mechanism 2, and then start the clamping cylinder 210 in the clamping and positioning mechanism 2. The clamping cylinder 210 pushes the movable clamping clamp 207 to rotate along the first rotating axis 206, clamping the high-precision annular guide rail 4 between the first clamping block 205 and the second clamping block 208, and then the two sets of end positioning mechanisms 3 at both ends of the high-precision annular guide rail 4 move along the annular positioning guide rail 1 under the drive of the second motor 302 and the second gear 303, clamping the two ends of the high-precision annular guide rail 4, thereby realizing the clamping of the high-precision annular guide rail 4.

[0030] After clamping is completed, the first motor 202 and the second motor 302 in the clamping positioning mechanism 2 and the end positioning mechanism 3 can be controlled to drive the clamping positioning mechanism 2 and the end positioning mechanism 3 to move synchronously on the annular positioning guide rail 1, so that the clamping position of the high-precision annular guide rail 4 can be adjusted, and positioning can also be performed, and it can also be used for transferring workstations.

[0031] It should be noted that, in this document, relational terms such as second and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision guide rail machining clamping positioning structure, comprising an annular positioning guide rail (1), a clamping positioning mechanism (2) and an end positioning mechanism (3), characterized in that: The clamping positioning mechanism (2) and the end positioning mechanism (3) are movably mounted on the annular positioning guide rail (1) via a slider; the clamping positioning mechanism (2) is clamped at the middle of the high-precision annular guide rail (4); the end positioning mechanism (3) is clamped at both ends of the high-precision annular guide rail (4); the clamping positioning mechanism (2) and the end positioning mechanism (3) cooperate to clamp the high-precision annular guide rail (4) to be processed; The clamping and positioning mechanism (2) is fixedly connected to a first slider (201), the first slider (201) is slidably connected to the annular positioning guide rail (1), a first motor (202) is fixedly connected to one side of the first slider (201), a first gear (203) is fixedly connected to the transmission shaft of the first motor (202) via a keyway, an annular rack (101) is fixedly connected below the annular positioning guide rail (1), the first gear (203) and the annular rack (101) are meshed with each other for transmission, and the clamping and positioning mechanism (2) comprises a clamping frame (204), the clamping frame (2 04) is fixedly connected to the first slider (201), one side of the upper end of the clamping frame (204) is fixedly connected to a first clamping block (205), one side of the clamping frame (204) is movably connected to a movable clamping clamp (207) via a first rotating shaft (206), one side of the movable clamping clamp (207) is fixedly connected to a second clamping block (208), the lower part of the clamping frame (204) is movably connected to a clamping cylinder (210) via a second rotating shaft (209), and the output end of the clamping cylinder (210) is movably connected to the movable clamping clamp (207) via a third rotating shaft (211); A second slider (301) is fixedly connected to the end positioning mechanism (3), the second slider (301) is slidably connected to the annular positioning guide rail (1), a second motor (302) is fixedly connected to one side of the second slider (301), a second gear (303) is fixedly connected to the transmission shaft of the second motor (302) via a keyway, and the second gear (303) and the annular rack (101) are meshed with each other for transmission.

2. A high-precision guide rail machining clamping positioning structure according to claim 1, characterized in that: The end positioning mechanism (3) comprises an end limiting bracket (304), the end limiting bracket (304) is fixedly connected to the second sliding block (301), and one side of the end limiting bracket (304) is fixedly connected to an end limiting block (305).

3. A high-precision guide rail machining clamping positioning structure according to claim 2, characterized in that: A pressure sensor (212) is provided between the clamping frame (204) and the first clamping block (205) and between the movable clamping clamp (207) and the second clamping block (208), and a torque sensor (306) is provided between the end limit bracket (304) and the end limit block (305).

4. A high-precision guide rail machining clamping positioning structure according to claim 3, characterized in that: The first clamping block (205) and the second clamping block (208) are mutually engaged with grooves on both sides of the high-precision annular guide rail (4); the first clamping block (205), the second clamping block (208) and the end stop block (305) are all made of nylon.

5. The high-precision guide rail machining clamping positioning structure according to claim 1, characterized in that: The first motor (202) and the second motor (302) are both reduction servo motors.

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