Limiting clamp of engraving and milling machine

Abstract

The utility model discloses a limiting clamp of an engraving and milling machine. The limiting clamp comprises an inner circular ring and an outer circular ring, the inner circular ring and the outer circular ring are coaxially arranged; the inner circular ring and the outer circular ring can rotate relatively; three centering parts are arranged on the inner circular ring; the centering part comprises a mounting strip of which the middle part is rotationally connected to the inner circular ring, a swing arm of which the middle part is rotationally connected to one end of the mounting strip, and an abutting roller arranged at one end of the swing arm; the swing arm is in transmission connection with the outer circular ring; a plurality of adjusting screws are arranged on the inner circular ring; and the adjusting screw can selectively limit the rotation of the mounting strip. Any one swing arm is toggled, so that the three swing arms can drive the wafer to move at the same time, and the difficulty of manually adjusting the position of the wafer is reduced; the mounting strip for mounting the swing arm can be finely adjusted, so that the machining and assembling precision is reduced, and the centering precision of the wafer and the engraving and milling machine is guaranteed; the operation position of the swing arm protrudes, operation is convenient, the overall area is small, and transformation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of automation equipment, and in particular relates to a limiting clamp for a precision engraving machine. Background Art

[0002] In the field of wafer glass processing, the shape of the wafer needs to be precisely processed, usually on a precision engraving machine. For the processing of the circular shape, the placement position needs to be restricted, otherwise the deviation will cause other parts of the circle to not be processed. Therefore, the problem of loading and unloading positioning is particularly critical, and a design solution is needed to improve the accuracy and convenience of positioning.

[0003] The Chinese patent document with publication number CN115742043B discloses a non-standard design mechanism of a cutting machine work disk, including a support table, an X-axis movable slide, a Y-axis movable slide and a work disk assembly. A limit clamp is set on the outer side of the movable work disk, and the rotation of the annular plate is controlled by the extension and contraction of the electric push rod. The four clamps move inward at the same time to support and limit the outer side of the wafer, so that the wafer and the movable work disk are placed concentrically and fixed. The center of the wafer can be determined by determining the center position of the movable work disk, which facilitates the cutting process of the wafer. By setting up a movable work disk, the air inside the disk body is extracted to make the wafer adsorbed on the supporting disk. By intake air into the bottom end of the disk body, the movable plate is moved upward, and the ejector pin is moved upward and inserted into the air hole. The top surface of the ejector pin and the top surface of the support disk are arranged in the same plane, which is convenient for cleaning the surface of the support disk and prevents debris from falling into the air hole when cleaning the surface of the support disk.

[0004] In the aforementioned patent solution, in order to ensure that each clamping plate synchronously and accurately pushes the wafer to be concentric with the movable worktable, the processing and assembly accuracy requirements of each component are relatively high, which also means that the corresponding production and manufacturing costs are relatively high. In addition, due to factors such as active clearance and movement wear, the movement accuracy of the clamping plate will gradually decrease with long-term use. The centering equipment that uses multiple pneumatic or electric components has high manufacturing costs and control difficulties. At the same time, manual monitoring and wafer loading and unloading are still required, which essentially does not reduce the amount of human participation much. Utility Model Content

[0005] In order to overcome the problem in the prior art that in order to ensure the processing quality of the wafer, the wafer needs to be concentric with the support seat, and the existing adjustment mechanism needs to have high processing accuracy and assembly accuracy to ensure the centering accuracy. However, due to reasons such as active clearance and motion wear, the centering accuracy will decrease with long-term use. One purpose of the utility model is to provide a precision engraving machine limit clamp, which is achieved by providing two circular rings that can rotate with each other on the outer periphery of the precision engraving machine support seat, and providing a mounting bar with a rotatable middle part on one of the circular rings, and providing a swing arm with a rotatable middle part at one end of the mounting bar. The rotation of the swing arm drives the wafer to adjust its position, and the rotation of the mounting bar provides a movable margin for installation and adjustment for the driving accuracy of the swing arm.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a precision engraving machine limiting clamp, comprising an inner ring and an outer ring which are arranged in sequence from the inside to the outside on the outer circumference of the precision engraving machine support seat; the inner ring and the outer ring are coaxially arranged; the inner ring and the outer ring can rotate relative to each other; three centering parts evenly distributed along the circumferential direction are arranged on the inner ring; the centering part comprises a mounting bar rotatably connected to the inner ring in the middle, a swing arm rotatably connected to one end of the mounting bar in the middle, and an abutting roller arranged at one end of the swing arm; the swing arm is transmission-connected to the outer ring; wherein, a plurality of adjusting screws are arranged on the inner ring; the adjusting screws can selectively limit the rotation of the mounting bar.

[0007] During initial installation or adjustment after wear, the wafer is placed on the engraving machine support seat, and the inner and outer rings rotate relative to each other, so that the three contact rollers abut against the outer periphery of the wafer. The wafer and the engraving machine support seat are adjusted to the appropriate position (concentric), and the adjusting screw is locked in the position of the mounting bar. This ensures that each rotation of the inner and outer rings can adjust the wafer to the appropriate position. This reduces processing and assembly accuracy and facilitates adjustment when movement gaps occur in the later stage.

[0008] Furthermore, a linkage groove is provided at one end of the swing arm away from the abutting roller; three second fastening screws uniformly distributed along the circumferential direction are longitudinally provided at the upper end of the outer ring; and the second fastening screws are located in the corresponding linkage groove.

[0009] Optionally, the outer ring is mounted on a precision engraving machine; the inner ring is rotatably connected to the inner wall of the outer ring; and the thickness of the inner ring is smaller than that of the outer ring.

[0010] Preferably, one end of the swing arm away from the abutting roller extends toward the periphery, and the second fastening screw is located in the middle of the swing arm.

[0011] The outer end of any one of the swing arms is manually driven to rotate, and the three swing arms rotate synchronously to move the wafer to a suitable position. At the same time, the inner ring rotates and the outer ring does not rotate, which can prevent the outer ring located at the periphery from rotating and hooking the operator, making manual operation easier.

[0012] Furthermore, two adjustment slots are provided at one end of the mounting bar away from the swing arm; and the adjustment screws are located in the corresponding adjustment slots.

[0013] Specifically, the adjusting groove is a stepped groove, and the upper end of the adjusting screw is located inside the adjusting groove.

[0014] Furthermore, the outer periphery of each second fastening screw is rotatably connected to a second copper tube; the second copper tube is slidably connected in the corresponding linkage groove.

[0015] Furthermore, three increased tubes are provided at the upper end of the outer ring; the upper ends of the increased tubes are evenly distributed along the circumferential direction of the outer ring; and the second fastening screw is detachably connected to the increased tube.

[0016] Furthermore, a first transfer hole is provided in the middle of the mounting bar; three limit screws are provided at the upper end of the inner ring; the limit screws are evenly distributed along the circumferential direction of the inner ring; the mounting bar is rotatably connected to the outer periphery of the limit screws; the limit screws can optionally limit the rotation of the mounting bar.

[0017] The limiting screw can not only provide a rotation axis for the installation bar, but also lock the installation bar, thereby improving the stability of the installation bar.

[0018] Furthermore, a first fastening screw is provided at one end of the upper end of the mounting bar close to the swing arm; the outer periphery of the first fastening screw is rotatably connected to a first copper tube; the middle part of the swing arm is rotatably connected to the outer periphery of the first copper tube.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. By moving any one of the swing arms, the three swing arms can simultaneously drive the wafer to move concentrically toward the support table of the precision engraving machine, thereby ensuring the processing quality of the wafer, reducing the difficulty of manually adjusting the wafer position, and improving processing efficiency;

[0021] 2. The mounting bar used to install the swing arm can be fine-tuned, which reduces the processing and assembly accuracy. The movement gap and wear caused by long-term use can also be compensated by fine-tuning, ensuring the accuracy of the centering of the wafer and the engraving machine;

[0022] 3. The swing arm extends to the periphery, and the operating position is prominent, which is convenient for manual operation; no electric or pneumatic components are used, which reduces the overall manufacturing cost and control difficulty; the overall area occupied by the engraving machine base is small, which is convenient for the modification of existing engraving machine equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the utility model;

[0024] Figure 2 This is a schematic diagram of the exploded structure of the centering part of the present utility model;

[0025] Figure 3 This is a schematic structural diagram of the mounting strip of the present invention.

[0026] In the figure: 1. Base plate of the precision engraving machine; 11. Support seat of the precision engraving machine; 2. Inner ring; 3. Outer ring; 31. Increased tube; 4. Mounting strip; 41. End hole; 42. First transfer hole; 43. Adjustment slot; 5. Swing arm; 51. Second transfer hole; 52. Linkage slot; 6. Abutment roller; 7. First fastening screw; 71. First copper tube; 8. Second fastening screw; 81. Second copper tube; 9. Wafer. DETAILED DESCRIPTION

[0027] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] In the description of the present invention, it should be noted that, for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating directions and positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Therefore, the terms "first" and "second" may explicitly or implicitly refer to one or more of these features. In the description of this utility model, "several" means two or more, unless otherwise specifically defined.

[0030] In this utility model, unless otherwise specified or limited, terms such as "disposed" and "installed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection; direct connection, connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0031] See also Figure 1-Figure 3 A precision engraving machine limiting clamp includes a precision engraving machine support base 11 arranged on a precision engraving machine base plate 1, an outer ring 3 coaxially arranged on the outer periphery of the precision engraving machine support base 11, and an inner ring 2 coaxially connected to the inner wall of the outer ring 3; the thickness of the inner ring 2 is less than the thickness of the outer ring 3.

[0032] The inner ring 2 is provided with three centering parts evenly distributed along the circumferential direction; the centering parts include a mounting bar 4 whose middle part is rotatably connected to the inner ring 2, a swing arm 5 whose middle part is rotatably connected to one end of the mounting bar 4, and an abutting roller 6 provided at one end of the swing arm 5.

[0033] The end of the swing arm 5 away from the abutment roller 6 is provided with a linkage groove 52 arranged along its length direction; three second fastening screws 8 uniformly distributed along the circumferential direction are longitudinally provided on the upper end of the outer ring 3; the outer periphery of each second fastening screw 8 is rotatably connected to a second copper tube 81; the second copper tube 81 is slidably connected in the corresponding linkage groove 52; the end of the swing arm 5 away from the abutment roller 6 extends toward the periphery, and the second fastening screw 8 is located in the middle of the swing arm 5.

[0034] Two adjustment slots 43 are provided at one end of the mounting bar 4 away from the swing arm 5; six adjustment screws are provided on the inner ring 2; the adjustment screws are located in the corresponding adjustment slots 43; the adjustment slots 43 are stepped slots, and the upper ends of the adjustment screws are located inside the adjustment slots 43; the adjustment screws can optionally limit the rotation of the mounting bar 4.

[0035] Three increased tubes 31 are provided at the upper end of the outer ring 3 ; the upper ends of the increased tubes 31 are evenly distributed along the circumferential direction of the outer ring 3 ; the second fastening screws 8 are detachably connected to the increased tubes 31 .

[0036] A first transfer hole 42 is provided in the middle of the mounting bar 4; three limit screws are provided at the upper end of the inner ring 2; the limit screws are evenly distributed along the circumference of the inner ring 2; the mounting bar 4 is rotatably connected to the outer periphery of the limit screws; the limit screws can selectively limit the rotation of the mounting bar 4.

[0037] An end hole 41 is provided at the upper end of the mounting bar 4 close to the end of the swing arm 5; a first fastening screw 7 is provided in the end hole 41; the outer periphery of the first fastening screw 7 is rotatably connected to a first copper tube 71; a second transfer hole 51 is provided in the middle of the swing arm 5; the second transfer hole 51 is rotatably connected to the outer periphery of the first copper tube 71.

[0038] Instructions: Place wafer 9 on engraving machine support 11. Rotate any swing arm 5. This swing arm drives inner ring 2, which in turn drives all swing arms 5. Abutment rollers 6 contact the outer wall of wafer 9, driving wafer 9 to move. The three abutment rollers 6 then align wafer 9 concentrically with engraving machine support 11. Finally, rotate swing arm 5 to its original position.

[0039] The above description is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by any technician in this field within the scope of the present invention are included in the patent scope of the present invention.

Claims

1. A limiting fixture for a precision engraving machine, characterized by: It comprises an inner ring and an outer ring which are sequentially arranged on the outer circumference of the support seat of the engraving machine from the inside to the outside; the inner ring and the outer ring are coaxially arranged; the inner ring and the outer ring can rotate relative to each other; the inner ring is provided with three centering parts evenly distributed along the circumferential direction; the centering parts comprise a mounting bar rotatably connected to the inner ring in the middle, a swing arm rotatably connected to one end of the mounting bar in the middle, and an abutting roller arranged at one end of the swing arm; the swing arm is transmission-connected to the outer ring; wherein, a plurality of adjusting screws are provided on the inner ring; the adjusting screws can selectively limit the rotation of the mounting bar.

2. The limiting clamp according to claim 1, characterized in that: A linkage groove is provided at one end of the swing arm away from the abutting roller; three second fastening screws uniformly distributed along the circumferential direction are longitudinally provided at the upper end of the outer ring; the second fastening screws are located in the corresponding linkage grooves.

3. The limiting clamp according to claim 2, characterized in that: The outer ring is mounted on a precision engraving machine; the inner ring is rotatably connected to the inner wall of the outer ring; and the thickness of the inner ring is smaller than that of the outer ring.

4. The limiting clamp according to claim 3, characterized in that: One end of the swing arm is away from the abutting roller and extends toward the periphery, and the second fastening screw is located in the middle of the swing arm.

5. The limiting clamp according to any one of claims 1 to 4, characterized in that: Two adjustment slots are provided at one end of the mounting bar away from the swing arm; and the adjustment screws are located in the corresponding adjustment slots.

6. The limiting clamp according to claim 5, characterized in that: The adjusting groove is a stepped groove, and the upper end of the adjusting screw is located inside the adjusting groove.

7. The limiting clamp according to any one of claims 2 to 4, characterized in that: The outer periphery of each second fastening screw is rotatably connected to a second copper tube; the second copper tube is slidably connected in the corresponding linkage groove.

8. The limiting clamp according to any one of claims 2 to 4, characterized in that: Three increased tubes are provided at the upper end of the outer ring; the upper ends of the increased tubes are evenly distributed along the circumferential direction of the outer ring; and the second fastening screw is detachably connected to the increased tubes.

9. The limiting clamp according to any one of claims 1 to 4, characterized in that: A first transfer hole is provided in the middle of the mounting bar; three limit screws are provided at the upper end of the inner ring; the limit screws are evenly distributed along the circumference of the inner ring; the mounting bar is rotatably connected to the outer periphery of the limit screws; the limit screws can selectively limit the rotation of the mounting bar.

10. The limiting clamp according to any one of claims 1 to 4, characterized in that: A first fastening screw is provided at one end of the upper end of the mounting bar close to the swing arm; the outer periphery of the first fastening screw is rotatably connected to a first copper tube; the middle portion of the swing arm is rotatably connected to the outer periphery of the first copper tube.

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