CNC (computer numerical control) 180-degree rotating clamp

Abstract

The invention relates to the technical field of numerical control machining, is used for solving the technical problems that when an existing workpiece rotates by 180 degrees, operation is inconvenient, and precision is insufficient, and provides a CNC 180-degree rotation clamp which comprises a sliding mechanism, a rotating mechanism and an expansion mechanism, the sliding mechanism comprises a sliding rail and a sliding block arranged on the sliding rail in a sliding mode, and the sliding block is arranged on the sliding rail in a sliding mode. A rack is arranged on the sliding rail; the rotating mechanism comprises a rotating seat and an expansion rod rotationally arranged on the rotating seat, the expansion rod is hollow, a cutting groove is formed in the free end of the expansion rod and used for sleeving a to-be-processed workpiece, a gear is arranged on the expansion rod and meshed with the rack, and when the sliding rail slides to the first position or the second position relative to the sliding block, the cutting groove is matched with the gear. The gear drives the expansion rod to rotate to a 0-degree position or a 180-degree position based on meshing transmission with the rack; the expansion mechanism comprises a conical rod, the conical rod is inserted into an expansion rod, and when the conical rod axially stretches out and draws back relative to the expansion rod, the expansion rod expands or loosens relative to the workpiece to be processed.

Description

Technical Field

[0001] The present application relates to the technical field of CNC machining, and in particular to a CNC 180-degree rotating fixture. Background Art

[0002] During CNC machining, some workpieces need to be rotated 180 degrees and continue to be processed after machining. Traditional related devices have some disadvantages during use. For example, after machining, the workpiece needs to be disassembled and manually flipped 180 degrees by the operator before re-clamping and continuing machining, which increases the labor intensity of the operator and is not conducive to improving production efficiency. In particular, during the second clamping, the positioning reference surface of the part may be different from that of the first clamping, so the positioning reference of the two machinings is inconsistent, thereby reducing the machining accuracy of the part. Summary of the invention

[0003] The present application provides a CNC 180-degree rotating fixture to solve the technical problem in the background technology that the positioning reference surface of the part may be different from that of the first clamping during the second clamping, thereby making the positioning references of the two processings inconsistent, thereby reducing the processing accuracy of the part.

[0004] In order to solve the above technical problems, a technical solution adopted by the present application is: to provide a CNC 180-degree rotating fixture, the CNC 180-degree rotating fixture comprising: The sliding mechanism comprises a slide rail and a slider slidably arranged on the slide rail, wherein the slide rail is provided with a rack; The rotating mechanism comprises a rotating seat and a tensioning rod rotatably arranged on the rotating seat, wherein the tensioning rod is hollow, and a slot is arranged at the free end of the tensioning rod for fitting the workpiece to be processed, and a gear is arranged on the tensioning rod, and the gear is meshed with the rack. When the slide rail slides to the first position or the second position relative to the slider, the gear drives the tensioning rod to rotate to the 0 degree position or the 180 degree position based on the meshing transmission with the rack. The expansion mechanism comprises a tapered rod, wherein the tapered rod is inserted into the expansion rod, and when the tapered rod is axially extended or retracted relative to the expansion rod, the expansion rod is expanded or relaxed relative to the workpiece to be processed.

[0005] Preferably, the CNC 180-degree rotating fixture further comprises a base plate, and the slide rail and the rotating seat are fixedly assembled based on the base plate.

[0006] Preferably, the sliding mechanism also includes a first driving member and a first mounting seat, the first mounting seat is fixedly assembled based on the base plate, the first driving member is fixedly assembled through the first mounting seat, the first driving member has a retractable first driving rod, and the first driving rod is connected to the slider to drive the slider to slide on the slide rail.

[0007] Preferably, the CNC 180-degree rotating fixture further includes a first stop block and a second stop block, wherein the first stop block and the second stop block are respectively located at both ends of the slide rail and are used to limit the slide block when the slide block slides to the first position or the second position.

[0008] Preferably, the CNC 180-degree rotating clamp also includes a second driving member and a second mounting seat. The second mounting seat is fixedly assembled based on the tail end of the expansion rod. The second driving member is fixedly assembled through the second mounting seat. The second driving member is used to drive the conical rod to axially extend and retract relative to the expansion rod.

[0009] Preferably, the rotating seat is fixedly assembled based on the base plate, the rotating seat is provided with a bearing hole, a bearing is provided in the bearing hole, and the expansion rod is rotatably arranged relative to the rotating seat based on the bearing.

[0010] Preferably, the CNC 180-degree rotating fixture also includes a positioning mechanism, which is fixedly assembled based on the base plate, and the positioning mechanism has a lifting rod, which can be raised or lowered relative to the expansion rod, and an anti-rotation support is provided on the top of the lifting rod, and the expansion rod is provided with an anti-rotation clamping surface corresponding to the anti-rotation support, when the lifting rod is raised, the anti-rotation support is matched and engaged with the anti-rotation clamping surface to prevent the expansion rod from rotating, and when the lifting rod is lowered, the anti-rotation support is separated from the anti-rotation clamping surface to allow the expansion rod to rotate freely.

[0011] Preferably, the CNC 180-degree rotating fixture further comprises an auxiliary seat, the auxiliary seat is fixedly assembled based on the base plate, the auxiliary seat is provided with a through slot, and the anti-rotation support is telescoped in the through slot.

[0012] Preferably, a wear-resistant sleeve is arranged in the through groove.

[0013] Preferably, a workpiece positioning ring is also provided on the expansion rod.

[0014] The beneficial effect of the present application is that, different from the prior art, the CNC 180-degree rotating clamp provided by the present application includes a sliding mechanism, a rotating mechanism and a tensioning mechanism. Through the movement coordination of the sliding mechanism and the rotating mechanism, that is, the gear drives the tensioning rod to rotate to the 0-degree position or the 180-degree position based on the meshing transmission with the rack, high-precision clamping can be formed, thereby realizing precision machining of the workpiece to be processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them: Figure 1 It is a schematic diagram of the three-dimensional structure of the CNC 180-degree rotating fixture provided in an embodiment of the present application.

[0016] Figure 2 It is a schematic diagram of the side structure of the CNC 180-degree rotating fixture provided in an embodiment of the present application; Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure of the CNC 180 degree rotating fixture shown in FIG.

[0017] Explanation of the reference numerals: 100, substrate; 10, workpiece to be processed; 110, slide rail; 120, slider; 121, rack; 130, first driving member; 131, first mounting seat; 132, first driving rod; 141, first stop block; 142, second stop block; 200, rotating seat; 210, expansion rod; 211, cutting groove; 212, anti-rotation clamping surface; 220, gear; 230, tapered rod; 240, second driving member; 241, second mounting seat; 250, bearing; 300, positioning mechanism; 310, lifting rod; 320, anti-rotation support; 330, workpiece positioning ring; 400, auxiliary seat; 411, wear-resistant sleeve. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), such directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0020] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0021] like Figures 1 to 3 As shown, an embodiment of the present application discloses a CNC 180-degree rotating fixture, which includes a base plate 100 , a sliding mechanism, a rotating mechanism, a tightening mechanism, and a positioning mechanism 300 .

[0022] The base plate 100 may be roughly in the shape of a rectangular plate and may be made of a metal plate with good structural strength. A plurality of fixing holes are provided on the base plate 100 for assembling the sliding mechanism and the positioning mechanism 300 and the like.

[0023] The sliding mechanism includes a slide rail 110 and a slider 120 slidably disposed on the slide rail 110, and a rack 121 is disposed on the slide rail 110. The slide rail 110 is fixedly assembled based on the base plate 100, and the slide rail 110 is provided with a closing groove, and the bottom of the slider 120 is slidably engaged with the closing groove. The slider 120 has a side surface or a cross-section in the sliding direction that may be in an inverted T shape, and lubricating oil may be disposed between the slider 120 and the slide rail 110 to reduce friction resistance during sliding.

[0024] The rotating mechanism includes a rotating seat 200 and a tensioning rod 210 rotatably arranged on the rotating seat 200. The rotating seat 200 is fixedly assembled based on the substrate 100. The tensioning rod 210 is hollow. The free end of the tensioning rod 210 is provided with a groove 211 for fitting the workpiece 10 to be processed. A gear 220 is provided on the tensioning rod 210. The gear 220 is meshed with the rack 121. When the slide rail 110 slides to the first position or the second position relative to the slider 120, the gear 220 drives the tensioning rod 210 to rotate to the 0 degree position or the 180 degree position based on the meshing transmission with the rack 121, thereby realizing a 180 degree rotation of the workpiece 10 to be processed, which is simple and convenient.

[0025] The expansion mechanism includes a tapered rod 230 , which is inserted into the expansion rod 210 . When the tapered rod 230 is axially extended or retracted relative to the expansion rod 210 , the expansion rod 210 is expanded or relaxed relative to the workpiece 10 to be processed.

[0026] The sliding mechanism further includes a first driving member 130 and a first mounting seat 131. The first mounting seat 131 is fixedly assembled based on the substrate 100. The first driving member 130 is fixedly assembled through the first mounting seat 131. The first driving member 130 has a retractable first driving rod 132. The first driving rod 132 is connected to the slider 120 to drive the slider 120 to slide on the slide rail 110. In the embodiment of the present application, the first driving member 130 may be a cylinder. In other embodiments, the first driving member 130 may also be a screw motor.

[0027] In the embodiment of the present application, the CNC 180-degree rotating fixture further includes a first stop block 141 and a second stop block 142, which are respectively arranged at intervals at both ends of the slide rail 110, and the first stop block 141 and the second stop block 142 are used to limit the slider 120 when the slider 120 slides to the first position or the second position. The first position and the second position are positions that have been tested in advance, that is, the position where the tension rod 210 is rotated 180 degrees from the 0-degree position.

[0028] In the embodiment of the present application, the CNC 180-degree rotating fixture further includes a second driving member 240 and a second mounting seat 241. The second mounting seat 241 is fixedly assembled based on the tail end of the expansion rod 210. The second driving member 240 is fixedly assembled through the second mounting seat 241. The second driving member 240 is used to drive the tapered rod 230 to axially extend and retract relative to the expansion rod 210. Among them, the tail end of the expansion rod 210 is provided with a fixing hole, and the number of the fixing holes can be two, three or four. The second driving member 240 can be a cylinder. In other embodiments, the second driving member 240 can also be a screw motor.

[0029] The rotating seat 200 is fixedly assembled based on the base plate 100. The rotating seat 200 is provided with a bearing hole. A bearing 250 is provided in the bearing hole. The number of the bearings 250 can be two to ensure rotation stability. The expansion rod 210 is rotatably arranged relative to the rotating seat 200 based on the bearing 250.

[0030] The CNC 180 degree rotating fixture also includes a positioning mechanism 300, which is fixedly assembled based on the substrate 100. The positioning mechanism 300 has a lifting rod 310, which can be raised or lowered relative to the expansion rod 210. The top of the lifting rod 310 is provided with an anti-rotation support 320, and the expansion rod 210 is provided with an anti-rotation clamping surface 212 corresponding to the anti-rotation support 320. When the lifting rod 310 is raised, the anti-rotation support 320 is matched and engaged with the anti-rotation clamping surface 212 to prevent the expansion rod 210 from rotating. When the lifting rod 310 is lowered, the anti-rotation support 320 is separated from the anti-rotation clamping surface 212 to allow the expansion rod 210 to rotate freely. The positioning mechanism 300 can be a cylinder. The positioning mechanism 300 controls the extension and contraction of the lifting rod 310 so that the anti-rotation support 320 is engaged or separated with the anti-rotation clamping surface 212, so that the expansion rod 210 can be better positioned, and the processing accuracy of the workpiece 10 to be processed can be improved.

[0031] In the embodiment of the present application, the CNC 180-degree rotating fixture further includes an auxiliary seat 400, which is fixedly assembled based on the base plate 100, and the auxiliary seat 400 is provided with a through slot, and the anti-rotation support 320 is retracted in the through slot. By providing the auxiliary seat 400 with a through slot on the side of the positioning mechanism 300, the reliability of the positioning mechanism 300 can be further improved.

[0032] Furthermore, a wear-resistant sleeve 411 is arranged in the through groove, and the inner circumference of the wear-resistant sleeve 411 can be arranged to be conical, that is, the wear-resistant sleeve 411 has a larger diameter at the bottom and a smaller diameter at the top, and the diameter of the wear-resistant sleeve 411 gradually decreases from bottom to top. Correspondingly, the anti-rotation support 320 is also arranged to be a matching conical shape, thereby enabling the anti-rotation support 320 to be better aligned when rising, thereby preventing the anti-rotation support 320 from being displaced when rising.

[0033] Furthermore, a workpiece positioning ring 330 is provided on the expansion rod 210 , and the workpiece positioning ring 330 can play a role in positioning the loaded workpiece 10 to be processed.

[0034] In summary, it is easy for those skilled in the art to understand that the CNC rotating 180-degree clamp provided in the present application includes a sliding mechanism, a rotating mechanism and a tensioning mechanism, and through the movement coordination of the sliding mechanism and the rotating mechanism, that is, the gear 220 drives the tensioning rod 210 to rotate to the 0 degree position or the 180 degree position based on the meshing transmission with the rack 121, thereby forming a high-precision flip clamping, thereby realizing the precision machining of the workpiece 10 to be processed.

[0035] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A CNC 180 degree rotating fixture, characterized in that: The CNC 180 degree rotating fixture includes: A sliding mechanism, comprising a slide rail (110) and a slider (120) slidably arranged on the slide rail (110), wherein a rack (121) is arranged on the slide rail (110); A rotating mechanism, comprising a rotating seat (200) and an expansion rod (210) rotatably arranged on the rotating seat (200), the expansion rod (210) being hollow, a free end of the expansion rod (210) being provided with a cutting groove (211) for fitting a workpiece (10) to be processed, a gear (220) being provided on the expansion rod (210), the gear (220) being meshed with the rack (121), and when the slide rail (110) slides to a first position or a second position relative to the slider (120), the gear (220) drives the expansion rod (210) to rotate to a 0 degree position or a 180 degree position based on the meshing transmission with the rack (121); The expansion mechanism comprises a tapered rod (230), wherein the tapered rod (230) is inserted into the expansion rod (210), and when the tapered rod (230) is axially extended or retracted relative to the expansion rod (210), the expansion rod (210) is expanded or relaxed relative to the workpiece (10) to be processed.

2. The CNC 180 degree rotating fixture according to claim 1, characterized in that: The CNC 180-degree rotating fixture further comprises a base plate (100), and the slide rail (110) and the rotating seat (200) are fixedly assembled based on the base plate (100).

3. The CNC 180 degree rotating fixture according to claim 2, characterized in that: The sliding mechanism further comprises a first driving member (130) and a first mounting seat (131); the first mounting seat (131) is fixedly assembled based on the base plate (100); the first driving member (130) is fixedly assembled via the first mounting seat (131); the first driving member (130) has a retractable first driving rod (132); the first driving rod (132) is connected to the sliding block (120) to drive the sliding block (120) to slide on the sliding rail (110).

4. The CNC 180 degree rotating fixture according to claim 3, characterized in that: The CNC 180-degree rotating fixture further comprises a first stop block (141) and a second stop block (142), wherein the first stop block (141) and the second stop block (142) are respectively located at two ends of the slide rail (110) and are used to limit the slide block (120) when the slide block (120) slides to the first position or the second position.

5. The CNC 180 degree rotating fixture according to claim 1, characterized in that: The CNC 180-degree rotating clamp also includes a second driving member (240) and a second mounting seat (241). The second mounting seat (241) is fixedly assembled based on the tail end of the expansion rod (210). The second driving member (240) is fixedly assembled through the second mounting seat (241). The second driving member (240) is used to drive the tapered rod (230) to axially extend and retract relative to the expansion rod (210).

6. The CNC 180 degree rotating fixture according to claim 2, characterized in that: The rotating seat (200) is fixedly assembled based on the base plate (100), the rotating seat (200) is provided with a bearing hole, a bearing (250) is provided in the bearing hole, and the expansion rod (210) is rotatably arranged relative to the rotating seat (200) based on the bearing (250).

7. The CNC 180 degree rotating fixture according to claim 2, characterized in that: The CNC 180-degree rotating fixture also includes a positioning mechanism (300), wherein the positioning mechanism (300) is fixedly assembled based on the base plate (100), and the positioning mechanism (300) has a lifting rod (310), wherein the lifting rod (310) can be lifted or lowered relative to the expansion rod (210), and an anti-rotation support (320) is provided at the top of the lifting rod (310), and the expansion rod (210) is provided with an anti-rotation clamping surface (212) corresponding to the anti-rotation support (320), when the lifting rod (310) is lifted, the anti-rotation support (320) is matched and engaged with the anti-rotation clamping surface (212) to prevent the expansion rod (210) from rotating, and when the lifting rod (310) is lowered, the anti-rotation support (320) is separated from the anti-rotation clamping surface (212) to allow the expansion rod (210) to rotate freely.

8. The CNC 180 degree rotating fixture according to claim 7, characterized in that: The CNC 180-degree rotating fixture further comprises an auxiliary seat (400), the auxiliary seat (400) being fixedly assembled based on the base plate (100), the auxiliary seat (400) being provided with a through slot, and the anti-rotation bracket (320) being telescopic in the through slot.

9. The CNC 180 degree rotating fixture according to claim 8, characterized in that: A wear-resistant sleeve (411) is arranged in the through groove.

10. The CNC 180 degree rotating fixture according to claim 1, characterized in that: The expansion rod (210) is also provided with a workpiece positioning ring (330).

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