Adjustable angle fixture for milling

Abstract

The utility model relates to the field of milling machining especially relates to a kind of adjustable angle clamps for milling machining. Including base, the four corner position of the lower surface of base is fixedly connected with support column, the upper surface of base is equipped with adjusting device, the adjusting device includes two arc plates, two The arc plate is fixedly connected with base, the side of two The arc plate is fixedly connected with same connecting plate by approaching each other, the cross section of connecting plate is arc, the arc surface of connecting plate is fixedly connected with half worm wheel, the arc surface of two The arc plate is slidably connected with same concave plate. The utility model provides a kind of adjustable angle clamps for milling machining, solves the existing milling machining clamp when using, milling clamp angle cannot be adjusted, leading to operator to need repeatedly clamping workpiece, both increase manual operation time, and it is easy to lead to processing error, the problem of influence production efficiency and product precision.

Description

Technical Field

[0001] This utility model relates to the field of milling, and in particular to an adjustable angle fixture for milling. Background Technology

[0002] Milling is a machining process that uses a rotating cutting tool to cut a workpiece. It is mainly used to machine complex shapes such as planes, grooves, and holes. It is widely used in metal processing, mold making, and precision machining of mechanical parts.

[0003] Existing technologies, such as the utility model patent with publication number CN218074573U, disclose an adjustable-angle milling fixture. This patent includes a rotary table comprising an indexing plate, a disc, and bearings. The indexing plate and disc have a double-layer sandwich structure, with bearings positioned between them. A workpiece is positioned on one side of the indexing plate, and a base is located at one end, connected to the rotary table via hinges. A support frame is positioned within the angled space formed between the rotary table and the base. Both ends of the support frame are connected to the rotary table and the base via reinforcing plates and bolts, respectively. The support frame also includes two sets of adjustable crankshafts, each having a three-layer sandwich structure. This novel milling fixture features a simple structure, accurate indexing, and ease of operation, improving the efficiency and milling accuracy of machining side bevels on ordinary machine tools.

[0004] Regarding the above-mentioned issues, the following technical defects were found: When milling a workpiece, a fixture is required to hold and fix it. However, the existing milling fixtures cannot be adjusted in angle, which requires operators to repeatedly clamp the workpiece. This increases manual operation time and easily leads to processing errors, affecting production efficiency and product accuracy. Utility Model Content

[0005] The purpose of this invention is to solve the problem that existing milling fixtures cannot be adjusted in angle, which requires operators to repeatedly clamp the workpiece, increasing manual operation time and easily leading to processing errors, thus affecting production efficiency and product accuracy.

[0006] To solve the above-mentioned technical problems, this utility model provides an adjustable angle fixture for milling, comprising: a base, with support columns fixedly connected to the four corners of the lower surface of the base, and an adjustment device provided on the upper surface of the base. The adjustment device includes two arc plates, both of which are fixedly connected to the base. A common connecting plate is fixedly connected to the side of the two arc plates that are close to each other. The cross-section of the connecting plate is arc-shaped. A semi-worm gear is fixedly connected to the arc surface of the connecting plate. A common concave plate is slidably connected to the arc surfaces of the two arc plates. A semi-circular hole is opened on the lower surface of the concave plate. A worm is rotatably connected to the inner wall of the semi-circular hole. The worm meshes with the semi-worm gear. A connecting rod is fixedly connected to one end of the worm, and the connecting rod completely penetrates the worm. A round button is fixedly connected to one end of the connecting rod.

[0007] The effect achieved by the above components is that when milling is required, the angle of the concave plate can be adjusted by the cooperation of the worm and the semi-worm wheel, so that the workpiece on the concave plate can be processed at different angles.

[0008] Preferably, a plurality of grips are fixedly connected to the arc surface of the button, and the plurality of grips are evenly distributed on the arc surface of the button.

[0009] The effect achieved by the above components is that when the worm needs to be rotated, the connecting rod can be rotated by using the lever, thereby driving the worm to rotate, making the operation simpler and more convenient.

[0010] Preferably, a plurality of scale bars are fixedly connected to the sides of the two arc plates that are far apart from each other, and the plurality of scale bars are evenly distributed on one side of the arc plates.

[0011] The effect achieved by the above components is that when adjusting the angle of the concave plate, the scale strip on the arc plate can be used to make the angle adjustment more precise.

[0012] Preferably, both sides of the concave plate are fixedly connected with a marker strip, and the cross-section of the marker strip is arrow-shaped.

[0013] The effect achieved by the above components is that when the angle of the concave plate is adjusted, the marking strip can rotate with the concave plate, and the angle of rotation of the concave plate can be read quickly and accurately through the scale bar pointed to by the marking strip.

[0014] Preferably, the upper surface of the concave plate is provided with a clamping device, the clamping device including two fixing plates, both of which are fixedly connected to the concave plate. A threaded hole is opened on one side of the fixing plate, and a screw is threadedly connected to the inner wall of the threaded hole. A knob is fixedly connected to one end of the screw, and a connecting block is rotatably connected to the end of the screw away from the knob. A clamping plate is fixedly connected to the side of the connecting block away from the screw.

[0015] The aforementioned components achieve the following effects: when milling is required, they can clamp and fix workpieces of different lengths and widths, increasing the applicability of the device, and preventing the workpiece from shifting during the milling process, thus preventing errors in the processing results.

[0016] Preferably, the knob has a plurality of arc grooves on its arc surface, and the plurality of arc grooves are evenly distributed on the arc surface of the knob.

[0017] The effect achieved by the above components is that when the screw needs to be rotated, the knob can be rotated by means of the arc groove, thereby driving the screw to rotate and preventing the knob from slipping when rotating.

[0018] Preferably, a plurality of rubber strips are fixedly connected to the side of the clamping plate away from the screw, and the plurality of rubber strips are evenly distributed on the surface of the clamping plate.

[0019] The effect achieved by the above components is that when the two clamps come into contact with the workpiece, the rubber strip increases the friction between the clamps and the workpiece, thus making it less likely for the workpiece to slip between the clamps.

[0020] Compared with related technologies, the adjustable angle fixture for milling provided by this utility model has the following advantages:

[0021] By operating the adjustment device, when milling the workpiece at different angles is required, the angle of the concave plate can be adjusted through the cooperation of the worm gear and the semi-worm wheel. This avoids the need to constantly change fixtures to perform multi-angle machining on the workpiece, saves the time of changing fixtures, and improves the machining efficiency.

[0022] By operating the clamping device, when a workpiece needs to be processed, it can be placed in a concave plate for clamping and fixing, and can clamp workpieces of different lengths and widths, thus increasing the applicability of the device. Attached Figure Description

[0023] Figure 1 A three-dimensional structural diagram of an adjustable angle fixture for milling provided by this utility model;

[0024] Figure 2 for Figure 1 The diagram shows a three-dimensional structure of the adjustment device.

[0025] Figure 3 for Figure 2 The enlarged view at point A is shown below;

[0026] Figure 4 for Figure 1 A three-dimensional structural diagram of the clamping device shown.

[0027] The following are the labels in the diagram: 1. Base; 2. Support column; 3. Adjustment device; 301. Arc plate; 302. Connecting plate; 303. Half worm gear; 304. Concave plate; 305. Semicircular hole; 306. Worm; 307. Connecting rod; 308. Round button; 309. Handle; 310. Scale strip; 311. Marking strip; 4. Clamping device; 41. Fixing plate; 42. Threaded hole; 43. Screw; 44. Connecting block; 45. Clamping plate; 46. Rubber strip; 47. Knob; 48. Arc groove. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0030] Please see Figures 1 to 4 The present invention provides an adjustable angle fixture for milling, comprising: a base 1, support columns 2 fixedly connected to the four corners of the lower surface of the base 1, an adjustment device 3 provided on the upper surface of the base 1, and a clamping device 4 provided on the upper surface of the concave plate 304.

[0031] In the embodiments of this utility model, please refer to Figures 1 to 3The adjusting device 3 includes two arc plates 301, both of which are fixedly connected to the base 1. The same connecting plate 302 is fixedly connected to the side of the two arc plates 301 that is close to each other. The cross-section of the connecting plate 302 is arc-shaped. A semi-worm gear 303 is fixedly connected to the arc surface of the connecting plate 302. The same concave plate 304 is slidably connected to the arc surfaces of the two arc plates 301. A semi-circular hole 305 is opened on the lower surface of the concave plate 304. A worm 306 is rotatably connected to the inner wall of the semi-circular hole 305. The worm 306 meshes with the semi-worm gear 303. A connecting rod 307 is fixedly connected to one end of the worm 306. The connecting rod 307 completely penetrates the worm 306. A round button 308 is fixedly connected to one end of the connecting rod 307. When milling is required, the angle of the concave plate 304 can be adjusted through the cooperation of the worm gear 306 and the semi-worm wheel 303, thus enabling machining of the workpiece at different angles on the concave plate 304. Several levers 309 are fixedly connected to the arc surface of the round button 308, and these levers 309 are evenly distributed on the arc surface of the round button 308. When the worm gear 306 needs to be rotated, the connecting rod 307 can be rotated using the levers 309, thereby driving the worm gear 306 to rotate, making operation simpler and more convenient. Several scale bars 310 are fixedly connected to the sides of the two arc plates 301 that are far apart from each other, and these scale bars 310 are evenly distributed on one side of the arc plates 301. When adjusting the angle of the concave plate 304, the scale bars 310 on the arc plates 301 can be used to make the angle adjustment more precise. Both sides of the concave plate 304 are fixedly connected with marking strips 311, the cross-section of which is arrow-shaped. This achieves the effect that when the angle of the concave plate 304 is adjusted, the marking strips 311 can rotate together with the concave plate 304, and the angle of rotation of the concave plate 304 can be quickly and accurately read through the scale strip 310 pointed to by the marking strips 311.

[0032] In the embodiments of this utility model, please refer to Figure 1 and Figure 4The clamping device 4 includes two fixing plates 41, both of which are fixedly connected to the concave plate 304. A threaded hole 42 is provided on one side of each fixing plate 41, and a screw 43 is threadedly connected to the inner wall of the threaded hole 42. A knob 47 is fixedly connected to one end of the screw 43, and a connecting block 44 is rotatably connected to the end of the screw 43 away from the knob 47. A clamping plate 45 is fixedly connected to the side of the connecting block 44 away from the screw 43. This device achieves the ability to clamp and fix workpieces of different lengths and widths when milling is required, increasing the applicability of the device and preventing workpiece displacement during milling, thus avoiding errors in the machining results. Several arc grooves 48 are evenly distributed on the arc surface of the knob 47. When the screw 43 needs to be rotated, the knob 47 can be rotated via the arc groove 48, thereby driving the screw 43 to rotate and preventing the knob 47 from slipping during rotation. Several rubber strips 46 are fixedly connected to the side of the clamping plate 45 away from the screw 43, and these rubber strips 46 are evenly distributed on the surface of the clamping plate 45. When the two clamping plates 45 are in contact with the workpiece, the rubber strips 46 increase the friction between the clamping plates 45 and the workpiece, thus preventing the workpiece from slipping between the clamping plates 45.

[0033] The working principle of the adjustable angle fixture for milling provided by this utility model is as follows: When the angle of the concave plate 304 needs to be adjusted, the operator rotates the lever 309 on the arc surface of the knob 308. The lever 309 drives the knob 308 to rotate the connecting rod 307 around its own axis. The connecting rod 307 then pulls the worm gear 306 to rotate within the semi-circular hole 305 of the concave plate 304, and the threaded teeth of the worm gear 306 mesh with the teeth of the semi-worm wheel 303 to generate a meshing thrust. The meshing thrust pushes the concave plate 304 to move along the arc trajectory of the semi-worm wheel 303. When the concave plate 304 rotates along the arc trajectory, the two sides of the concave plate 304 slide along the arc plate 301. During the rotation of the concave plate 304, the marking strips 311 on both sides of the concave plate 304 deflect synchronously with the concave plate 304. The arrow tip of the marking strip 311 points to the scale strip 310 on the surface of the arc plate 301. The operator reads the rotation angle of the concave plate 304 in real time according to the scale value indicated by the marking strip 311. When the concave plate 304 reaches the target angle, the rotation of the connecting rod 307 stops. The self-locking characteristics of the worm gear 306 and the half-worm wheel 303 maintain the angular stability of the concave plate 304. The workpiece is fixed on the surface of the concave plate 304 for milling. When machining different angled slopes, the rotation operation is restarted: rotating the knob 308 clockwise drives the worm gear 306 to rotate forward, and the meshing thrust of the worm gear 306 pushes the concave plate 304 to rotate, causing the concave plate 304 to tilt upward; rotating the knob 308 counterclockwise drives the worm gear 306 to rotate in reverse, and the meshing pull of the worm gear 306 pulls the concave plate 304 to rotate in the opposite direction, causing the concave plate 304 to tilt downward. Throughout the angle adjustment process, the worm gear 306 and the half-worm wheel 303 maintain meshing transmission. The scale bar 310 and the marking bar 311 work together to provide precise angle feedback. The handle 309 provides a convenient method for rotating the connecting rod 307.

[0034] When the workpiece needs to be clamped and fixed on the concave plate 304, the operator inserts their fingers into the arc groove 48 on the arc surface of the knob 47 to apply force and rotate the knob 47. The arc groove 48 increases the friction of the hand to prevent slippage. The knob 47 drives the screw 43 to rotate and advance within the threaded hole 42 of the fixing plate 41. The screw 43 pushes the connecting block 44 to move horizontally. Immediately afterwards, the two connecting blocks 44 pull the two clamping plates 45 to move closer to each other. When the rubber strip 46 on the surface of the clamping plate 45 contacts the surface of the workpiece, the rubber strip 46 deforms elastically under pressure, increasing the contact area with the workpiece and generating static friction. Continuing to rotate the knob 47 causes the screw 43 to continue to advance, and the connecting blocks 44 drive the clamping plates 45 to apply symmetrical extrusion force to the workpiece. The deformation of the rubber strip 46 increases with the increase of pressure. Under the pressure of the clamping plates 45 on both sides, the workpiece is fixed to the surface of the concave plate 304. The frictional resistance of the rubber strip 46 prevents the workpiece from moving axially. During milling, the workpiece is impacted by cutting forces. The rubber strip 46 absorbs vibration energy through elastic deformation, maintaining clamping stability. When the workpiece needs to be removed, the knob 47 is rotated in the opposite direction. The screw 43 pulls the connecting block 44 back, and the connecting block 44 pulls the clamping plate 45 away from the workpiece, thereby relieving the pressure on the workpiece. The rubber strip 46 returns to its original shape and detaches from the workpiece surface. The entire clamping process is achieved by rotating the knob 47 to drive the screw 43 to transmit linear thrust, which is converted into linear clamping action of the clamping plate 45 through the connecting block 44. The rubber strip 46 provides cushioning and anti-slip functions in the contact state, and the arc groove 48 ensures that slippage does not occur when rotating the knob 47.

[0035] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An adjustable angle fixture for milling, characterized in that, include: A base (1) is provided, with support columns (2) fixedly connected to the four corners of the lower surface of the base (1). An adjustment device (3) is provided on the upper surface of the base (1). The adjustment device (3) includes two arc plates (301), both of which are fixedly connected to the base (1). A common connecting plate (302) is fixedly connected to the side of the two arc plates (301) that is close to each other. The cross-section of the connecting plate (302) is arc-shaped, and a semi-worm gear (303) is fixedly connected to the arc surface of the connecting plate (302). The two arc plates (301) are slidably connected to the same concave plate (304). The lower surface of the concave plate (304) is provided with a semi-circular hole (305). The inner wall of the semi-circular hole (305) is rotatably connected to a worm (306). The worm (306) meshes with a semi-worm wheel (303). One end of the worm (306) is fixedly connected to a connecting rod (307). The connecting rod (307) completely penetrates the worm (306). One end of the connecting rod (307) is fixedly connected to a round button (308).

2. The adjustable angle fixture for milling according to claim 1, characterized in that, The circular button (308) has several grips (309) fixedly connected to its arc surface, and the grips (309) are evenly distributed on the arc surface of the circular button (308).

3. The adjustable angle fixture for milling according to claim 1, characterized in that, Each of the two arc plates (301) has a number of scale bars (310) fixedly connected to the side away from each other, and the number of scale bars (310) are evenly distributed on one side of the arc plate (301).

4. The adjustable angle fixture for milling according to claim 1, characterized in that, Both sides of the concave plate (304) are fixedly connected with a marker strip (311), and the cross-section of the marker strip (311) is arrow-shaped.

5. The adjustable angle fixture for milling according to claim 1, characterized in that, The upper surface of the concave plate (304) is provided with a clamping device (4). The clamping device (4) includes two fixing plates (41). Both fixing plates (41) are fixedly connected to the concave plate (304). A threaded hole (42) is opened on one side of the fixing plate (41). A screw (43) is threadedly connected to the inner wall of the threaded hole (42). A knob (47) is fixedly connected to one end of the screw (43). A connecting block (44) is rotatably connected to the end of the screw (43) away from the knob (47). A clamping plate (45) is fixedly connected to the side of the connecting block (44) away from the screw (43).

6. The adjustable angle fixture for milling according to claim 5, characterized in that, The knob (47) has several arc grooves (48) on its arc surface, and the several arc grooves (48) are evenly distributed on the arc surface of the knob (47).

7. The adjustable angle fixture for milling according to claim 5, characterized in that, A number of rubber strips (46) are fixedly connected to the side of the clamping plate (45) away from the screw (43), and the number of rubber strips (46) are evenly distributed on the surface of the clamping plate (45).

Images