Workpiece clamp for engraving and milling machine

Abstract

The utility model relates to the technical field of machining, in particular to a workpiece clamp for an engraving and milling machine, the workpiece clamp for the engraving and milling machine comprises a bottom plate, a baffle plate, a clamping plate, a driving structure and an adjusting structure, the top of the bottom plate is equidistantly provided with a plurality of groups of sliding chutes, and the interiors of the sliding chutes are slidably connected with push plates; baffles used for blocking chippings are symmetrically and fixedly connected to the two sides of the multiple sets of push plates, the baffles slide in the sliding grooves, clamping plates are installed on one sides of the multiple sets of push plates, a driving structure is installed in the bottom plate, and adjusting structures are installed in the push plates. According to the workpiece clamp for the engraving and milling machine, the multiple push plates act at the same time in a combined transmission mode of the worm gear, the worm, the face gear and the first gear, the positions of the clamping plates can be finely adjusted through the adjusting structure according to production requirements, and the baffles can prevent chippings generated during production from entering the sliding grooves; the clamp has the advantages of being convenient and efficient in clamping operation, high in machining precision and good in protection performance.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field especially relates to a workpiece fixture for engraving and milling machine. BACKGROUND

[0002] As a kind of high-precision processing equipment, engraving and milling machine is widely used in mould manufacturing, electronic product processing, handicraft production and many other fields, it can carry out fine processing to various materials, meet the requirement of different industries to product precision and quality, with the continuous development of manufacturing industry, higher requirement is put forward to the processing precision, efficiency and stability of engraving and milling machine, and workpiece fixture as important component of engraving and milling machine, its performance directly influences the processing effect of engraving and milling machine;

[0003] Traditional engraving and milling machine fixture mostly adopts two-way clamping mode, however, this mode is difficult to provide enough stable clamping force in actual processing process, high-frequency vibration and complex cutting force are generated when engraving and milling machine works, two-way clamping fixture is difficult to effectively resist these external forces, leading to the movement and shaking of workpiece in processing process, once the position of workpiece is offset, it will seriously affect processing precision, cause product size deviation, surface quality decline and other problems, increase the rate of defective products, in addition, traditional fixture does not have centering clamping function, for some workpieces needing accurate centering processing, such as shaft parts, circular workpieces etc., traditional fixture cannot guarantee the center of workpiece and the center of processing tool to be accurately coincident, which makes the processing allowance of each part of workpiece uneven in processing process, not only affect processing precision, but also possibly lead to the aggravation of tool wear, shorten tool service life, increase production cost, in addition, traditional engraving and milling machine fixture is usually specially designed for workpiece of specific shape, size and material, which means that each different specification workpiece needs to be equipped with corresponding special fixture, finally, a large amount of debris is generated in engraving and milling process, debris entering into sliding groove can affect the movement of push plate and clamping plate, even cause mechanical failure.

[0004] Therefore, it is necessary to provide a new workpiece fixture for engraving and milling machine to solve the above technical problems. UTILITY MODEL CONTENT

[0005] To solve the above technical problems, the utility model provides a workpiece fixture for engraving and milling machine.

[0006] The workpiece clamp for the precision carving machine comprises a bottom plate, a baffle, a clamping plate, a driving structure and an adjusting structure, a plurality of groups of sliding grooves are equidistantly formed on the top of the bottom plate, a push plate is slidably connected in the sliding groove, a baffle for shielding debris is symmetrically and fixedly connected on the two sides of the plurality of groups of push plates, the baffle slides in the sliding groove, the clamping plate for clamping the workpiece is mounted on the side of the plurality of groups of push plates which are close to each other, the driving structure for driving the push plate to move is mounted in the bottom plate, and the adjusting structure for adjusting the position of the clamping plate is mounted in the push plate.

[0007] Preferably, the driving structure comprises a worm wheel, a worm, a face gear, a first gear and a first threaded rod, the worm wheel is rotatably connected in the bottom plate, the worm is rotatably connected in the bottom plate, the worm wheel is meshingly connected with the worm, the face gear is fixedly connected on the top of the worm wheel, a plurality of groups of first gears are equidistantly and rotatably connected above the face gear in the bottom plate, the first gears are meshingly connected with the face gear, the first threaded rod is fixedly connected on the side of the plurality of groups of push plates which are close to the first gears, the first threaded rod is slidably connected with the bottom plate, the inner wall of the first gear is provided with a thread, and the first threaded rod is threadedly connected with the first gear.

[0008] Preferably, the limiting structure comprises a second gear, a second threaded rod and a sliding rod, the second gear is rotatably connected in the plurality of groups of push plates, the inner wall of the second gear is provided with a thread, the second threaded rod is fixedly connected on the middle of the side of the clamping plate which is close to the push plate, the second threaded rod is threadedly connected with the second gear, the sliding rod is symmetrically and fixedly connected on the side of the clamping plate which is close to the push plate, and the sliding rod and the second threaded rod are slidably connected with the push plate.

[0009] Preferably, the motor is fixedly connected in the bottom plate, and the output end of the motor is fixedly connected with the end of the worm which is away from the worm wheel.

[0010] Preferably, a plurality of groups of internal splines are equidistantly formed on the outer wall of the first threaded rod, a plurality of groups of external splines are equidistantly formed on the sliding connection position of the bottom plate and the first threaded rod, and the external spline slides in the internal spline.

[0011] Preferably, the third gear is rotatably connected in the plurality of groups of push plates, the third gear is meshingly connected with the second gear, and the knob is fixedly connected on the side of the third gear.

[0012] Preferably, the end of the knob extends out of the push plate, the curved surface of the knob is provided with an anti-skid pattern, and the side of the knob which is away from the clamping plate is marked with a scale for displaying the adjusting length of the clamping plate.

[0013] Preferably, the corners of the clamping plate are designed as fillets.

[0014] Compared with the related art, the workpiece clamp for the precision carving machine has the following beneficial effects:

[0015] The clamping operation is convenient and efficient.

[0016] The driving structure adopts a combined transmission mode of worm, worm gear, face gear and first gear, the worm is driven to rotate by starting the motor, and then the worm gear, face gear and multiple first gears are driven in sequence, so that multiple push plates are synchronously moved, this design can realize simultaneous action of multiple push plates, rapidly position and roughly clamp the workpiece, greatly improve the efficiency of workpiece clamping and reduce the operation time;

[0017] Accurate and flexible adjustment:

[0018] The adjusting structure realizes fine adjustment of the position of the clamping plate through the cooperation of the knob, third gear, second gear and second threaded rod, the operator can accurately control the moving distance of the clamping plate by rotating the knob according to the specific shape and size of the workpiece, this fine adjustment function makes the clamp adapt to workpieces of different specifications, improves the universality and applicability of the clamp, and when the workpiece needs to be clamped in center, only need to adjust the adjusting length of each clamping plate according to the scale, so that accurate clamping can be realized, and the machining precision of the workpiece is ensured;

[0019] Good protection performance:

[0020] The push plate is fixedly connected with the baffle on both sides, the baffle will slide synchronously in the sliding groove during the movement of the push plate, the baffle can effectively shield the debris generated during the fine carving, prevent the debris from entering the sliding groove, avoid the influence of the accumulation of debris on the normal sliding of the push plate, so as to ensure the stability and reliability of the clamp and prolong the service life of the clamp. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The utility model provides a workpiece clamp for fine carving machine's structure schematic diagram;

[0022] Figure 2 The utility model discloses a workpiece clamp for fine carving machine Figure 1 The utility model discloses a workpiece clamp for fine carving machine

[0023] Figure 3 The utility model discloses a workpiece clamp for fine carving machine Figure 2 The utility model discloses a workpiece clamp for fine carving machine

[0024] Figure 4 The utility model discloses a workpiece clamp for fine carving machine Figure 1 The utility model discloses a workpiece clamp for fine carving machine

[0025] Figure 5 The utility model discloses a workpiece clamp for fine carving machine Figure 4 The utility model discloses a workpiece clamp for fine carving machine

[0026] The figure label: 1, bottom plate; 2, sliding groove; 3, push plate; 4, baffle; 5, clamping plate; 6, worm; 7, worm; 8, face gear; 9, first gear; 10, first threaded rod; 11, second gear; 12, second threaded rod; 13, sliding rod; 14, motor; 15, third gear; 16, knob. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the following will be further described in detail in combination with the drawings and examples, and it should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0028] The specific implementation of the utility model will be described in detail in combination with specific examples.

[0029] Please refer to Figures 1 to 5 A workpiece clamp for a precision carving machine, the workpiece clamp for the precision carving machine comprises a bottom plate 1, a baffle 4, a clamping plate 5, a driving structure and an adjusting structure, a plurality of groups of sliding grooves 2 are equidistantly formed in the top of the bottom plate 1, a push plate 3 is slidably connected in the inside of each sliding groove 2, a plurality of groups of baffle 4s are symmetrically and fixedly connected on the two sides of the push plate 3 and used for shielding debris, the baffle 4 slides in the sliding groove 2, a clamping plate 5 is mounted on the side of each group of push plate 3 that is close to each other and used for clamping a workpiece, a driving structure is mounted in the inside of the bottom plate 1 and used for driving the push plate 3 to move, an adjusting structure is mounted in the inside of the push plate 3 and used for adjusting the position of the clamping plate 5, and the corners of the clamping plate 5 are designed in a round shape;

[0030] It should be noted that: the baffle 4 can effectively shield the debris generated in the precision carving process, prevent the debris from entering the inside of the sliding groove 2, avoid the influence of the normal sliding of the push plate 3 caused by the accumulation of the debris, and the round corner design can avoid the situation that the workpiece is not placed neatly in the clamping process, so that the corners of the clamping plate 5 are in contact with the workpiece and damage the workpiece;

[0031] Please refer to Figures 1 to 3The driving structure comprises a worm wheel 6, a worm 7, a face gear 8, a first gear 9 and a first threaded rod 10, the worm wheel 6 is rotatably connected to the inside of the bottom plate 1, the worm 7 is rotatably connected to the inside of the bottom plate 1, the worm wheel 6 is in meshing connection with the worm 7, the top of the worm wheel 6 is fixedly connected with the face gear 8, a plurality of groups of the first gears 9 are rotatably connected at equal intervals above the face gear 8 in the inside of the bottom plate 1, the first gears 9 are all in meshing connection with the face gear 8, the side, close to the first gear 9, of the plurality of groups of the push plates 3 is all fixedly connected with the first threaded rods 10, the first threaded rods 10 are in sliding connection with the bottom plate 1, the inner wall of the first gear 9 is provided with a thread, the first threaded rods 10 are in threaded connection with the first gear 9, the inside of the bottom plate 1 is fixedly connected with a motor 14, the output end of the motor 14 is fixedly connected with the end, away from the worm wheel 6, of the worm 7, the outer wall of the first threaded rods 10 is provided with a plurality of groups of internal splines at equal intervals, a plurality of groups of external splines are provided at equal intervals at the sliding connection position of the bottom plate 1 and the first threaded rods 10, and the external splines slide in the internal splines;

[0032] It should be noted that the design that the external spline slides in the internal spline makes the first threaded rod 10 not rotate along with the rotation of the first gear 9, and the first gear 9 can only drive the first threaded rod 10 to slide in the horizontal direction through rotation.

[0033] Please refer to Figure 1 、 Figure 4 and Figure 5 , the limiting structure comprises a second gear 11, a second threaded rod 12 and a sliding rod 13, the inside of the plurality of groups of the push plates 3 is rotatably connected with the second gears 11, the inner wall of the second gears 11 is provided with a thread, the side, close to the push plate 3, of the clamping plate 5 is fixedly connected with the second threaded rod 12, the second threaded rod 12 is in threaded connection with the second gear 11, the side, close to the push plate 3, of the clamping plate 5 is fixedly connected with the sliding rod 13 in a symmetrical mode, the two sliding rods 13 and the second threaded rod 12 are all in sliding connection with the push plate 3, the inside of the plurality of groups of the push plates 3 is all rotatably connected with the third gears 15, the third gears 15 are in meshing connection with the second gears 11, the side of the third gears 15 is fixedly connected with the knobs 16, one end of the knobs 16 extends out of the push plate 3, the curved surface of the knobs 16 is provided with anti-skid lines, and the side, away from the clamping plate 5, of the knobs 16 is marked with a scale for displaying the adjusting length of the clamping plate 5;

[0034] It should be noted that the sliding rod 13 can limit the movement mode of the clamping plate 5 so that the clamping plate 5 can only slide in the horizontal direction along the sliding rod 13, thereby limiting the second threaded rod 12 so that the movement mode of the second threaded rod 12 is consistent with that of the clamping plate 5, the anti-skid lines can make the operator easily rotate the knobs 16, and the scale can make the operator clearly know the adjusting length of the clamping plate 5, and when the workpiece needs to be centered clamped, the adjusting length of the clamping plate 5 can be made consistent by rotating the knobs 16.

[0035] The working principle of the workpiece clamp for the precise engraving and milling machine is as follows:

[0036] Clamping workpiece:

[0037] When the clamping operation of the workpiece is needed, first start the motor 14 installed inside the bottom plate 1, the motor 14 is started, its output end will drive the fixed connection with the worm 7 starts to rotate, because the worm 7 and the worm wheel 6 is in meshing connection state, according to the principle of gear transmission, the rotation of the worm 7 will drive the worm wheel 6 synchronous rotation in the bottom plate 1, the top of the worm wheel 6 is fixedly connected with face gear 8, so when the worm wheel 6 rotates, the face gear 8 will be synchronous rotation, the bottom plate 1 inside the face gear 8 above equidistant rotation is connected with a plurality of first gear 9, and these first gear 9 are engaged with face gear 8, when the face gear 8 rotates, will drive a plurality of first gear 9 simultaneously rotate, the inner wall of the first gear 9 is provided with a thread, the push plate 3 close to the first gear 9 side is fixedly connected with the first screw rod 10, and the first screw rod 10 is connected with the first gear 9 through the thread, at the same time, in order to ensure that the first screw rod 10 can move smoothly in a straight line, the outer wall of the first screw rod 10 is equidistantly provided with a plurality of internal spline, the sliding connection between the bottom plate 1 and the first screw rod 10 is equidistantly provided with a plurality of external spline, the external spline slides in the internal spline, this design cleverly restricts the rotation of the first screw rod 10, so that the first screw rod 10 will not rotate with the rotation of the first gear 9, the first gear 9 can only drive the first screw rod 10 to slide along the horizontal direction by rotating, with the rotation of a plurality of first gear 9, they drive the respective corresponding first screw rod 10 to each other, because the push plate 3 is fixedly connected with the first screw rod 10, so the push plate 3 will also slide in the sliding groove 2 on the top of the bottom plate 1, finally, a plurality of push plate 3 can simultaneously move close to each other, so as to realize the clamping of the workpiece;

[0038] Adjust the position of the clamping plate 5:

[0039] If the position of the clamping plate 5 needs to be adjusted, the operator can achieve this by pulling out the part of the push plate 3 through the knob 16, because the knob 16 is fixedly connected with the third gear 15, so when the operator rotates the knob 16, the third gear 15 will rotate in the push plate 3, the push plate 3 is rotatably connected with the second gear 11, and the third gear 15 and the second gear 11 are meshed with each other, when the third gear 15 rotates, the second gear 11 will rotate synchronously, the second threaded rod 12 is fixedly connected to the middle part of the side of the clamping plate 5 close to the push plate 3, and the second threaded rod 12 is threadedly connected with the second gear 11, at the same time, the clamping plate 5 is symmetrically fixedly connected with two slide rods 13 on the side close to the push plate 3, and the two slide rods 13 and the second threaded rod 12 are slidably connected with the push plate 3, under the limiting action of the two slide rods 13, the rotation of the second gear 11 will drive the second threaded rod 12 to slide along the axial direction, thereby driving the clamping plate 5 to move, at the same time, the two slide rods 13 fixedly connected with the clamping plate 5 will move together with the clamping plate 5, so that the stability of the movement of the clamping plate 5 is ensured, in order to facilitate the operator to accurately adjust the position of the clamping plate 5, the side, away from the clamping plate 5, of the knob 16 is marked with scales showing the adjustment length of the clamping plate 5, and the operator can clearly understand the adjustment length of the clamping plate 5 according to the scales, when the workpiece needs to be centered clamped, the operator only needs to pull each knob 16 respectively, so that the adjustment lengths of the clamping plates 5 are consistent, and accurate clamping can be realized.

[0040] The above only describes the embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is based on the content of the present application and the drawings, is also included in the patent protection range of the present application.

Claims

1. A workpiece clamp for a fine carving machine, characterized by, The utility model relates to a workpiece clamping device, including: The bottom plate (1) is equipped with a plurality of groups of sliding grooves (2) equidistantly on the top, and the inside of the sliding groove (2) is slidably connected with a push plate (3); The two sides of the plurality of groups of push plates (3) are symmetrically fixedly connected with a baffle (4) for shielding debris, and the baffle (4) slides in the sliding groove (2); The side of the plurality of groups of push plates (3) close to each other is provided with a clamping plate (5) for clamping workpieces; The inside of the bottom plate (1) is provided with a driving structure for driving the push plate (3) to move; The inside of the push plate (3) is provided with an adjusting structure for adjusting the position of the clamping plate (5).

2. The workpiece clamp for a fine engraver according to claim 1, wherein The driving structure includes a worm gear (6), a worm (7), a face gear (8), a first gear (9) and a first threaded rod (10), the inside of the bottom plate (1) is rotatably connected with the worm gear (6), the inside of the bottom plate (1) is rotatably connected with the worm (7), the worm gear (6) is meshingly connected with the worm (7), the top of the worm gear (6) is fixedly connected with the face gear (8), a plurality of groups of first gears (9) are equidistantly rotatably connected above the face gear (8) in the inside of the bottom plate (1), the first gear (9) is meshingly connected with the face gear (8), the side of the plurality of groups of push plates (3) close to the first gear (9) is fixedly connected with the first threaded rod (10), the first threaded rod (10) is slidably connected with the bottom plate (1), the inner wall of the first gear (9) is provided with a thread, and the first threaded rod (10) is threadedly connected with the first gear (9).

3. The workpiece clamp for a fine engraver according to claim 1, wherein The limiting structure includes a second gear (11), a second threaded rod (12) and a sliding rod (13), the inside of the plurality of groups of push plates (3) is rotatably connected with the second gear (11), the inner wall of the second gear (11) is provided with a thread, the middle of the side of the clamping plate (5) close to the push plate (3) is fixedly connected with the second threaded rod (12), the second threaded rod (12) is threadedly connected with the second gear (11), the side of the clamping plate (5) close to the push plate (3) is symmetrically fixedly connected with the sliding rod (13), and the two sliding rods (13) and the second threaded rod (12) are slidably connected with the push plate (3).

4. The workpiece clamp for a fine engraving machine according to claim 2, characterized by, The inside of the bottom plate (1) is fixedly connected with a motor (14), and the output end of the motor (14) is fixedly connected with the end of the worm (7) away from the worm gear (6).

5. The workpiece clamp for a fine engraver according to claim 2, wherein A plurality of groups of internal splines are equidistantly formed on the outer wall of the first threaded rod (10), a plurality of groups of external splines are equidistantly formed on the sliding connection part of the bottom plate (1) and the first threaded rod (10), and the external spline slides in the internal spline.

6. The workpiece clamp for a fine engraver according to claim 3, wherein The inside of the plurality of groups of push plates (3) is rotatably connected with a third gear (15), the third gear (15) is meshingly connected with the second gear (11), and the side of the third gear (15) is fixedly connected with a knob (16).

7. The workpiece clamp for a fine engraver according to claim 6, wherein The end of the knob (16) extends out of the push plate (3), the curved surface of the knob (16) is provided with anti-skid lines, and the side of the knob (16) away from the clamping plate (5) is marked with a scale for showing the adjustment length of the clamping plate (5).

8. The workpiece clamp for a detail cutting machine according to claim 1, wherein The corners of the clamping plate (5) are designed in a round shape.

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