A fixture for CNC machine tools

Abstract

This application discloses a fixture for CNC machine tools, comprising a fixed base, a movable base rotatably connected to the fixed base, a flipping drive mechanism for driving the movable base to rotate, a clamping seat movable on the movable base, and a clamping mechanism for clamping and fixing workpieces. The movable base body in this application can be flipped to clamp workpieces at different angles, and the clamping position of the pressure plate can be adjusted by a first lead screw or a second lead screw, thereby reducing interference with the machining process. This application relates to the field of machining technology.

Description

Technical Field

[0001] This application relates to a fixture for CNC machine tools in the field of machining technology. Background Technology

[0002] When drilling holes in board-like workpieces such as wooden boards, the board material needs to be clamped, which requires the use of appropriate fixtures. Typically, these fixtures are mounted on a machine frame and include a support, a cylinder, and a pressure plate. The cylinder includes a cylinder body and a piston rod, with one end of the piston rod located inside the cylinder body and the other end connected to the pressure plate. Driven by the cylinder, the pressure plate presses against one side of the board material, while the other side of the board material is in contact with the support. Under the combined action of the pressure plate and the support, the board material is fixed in the fixture, facilitating the processing of the board material.

[0003] Current fixtures used for CNC five-sided drilling also employ a cylinder-driven clamping structure to position and fix the workpiece to be machined, and then the five-sided drill performs machining on five sides. However, during the fixing process, the fixture needs to clamp a portion of one side of the workpiece, resulting in a blind spot that cannot be machined during that part, thus hindering the machining process.

[0004] Meanwhile, current fixtures generally cannot be tilted at a certain angle for drilling or processing, which leads to a narrow range of applications for traditional pressure plate structures. The positioning function of traditional fixtures is gradually becoming inadequate and increasingly unable to meet the personalized machining needs of sheet materials.

[0005] Application content

[0006] The purpose of this application is to at least solve one of the technical problems existing in the prior art, and to provide a fixture for CNC machine tools that can reduce interference with the machining process caused by clamping workpieces, and can be flipped to meet machining requirements at different angles.

[0007] According to an embodiment of this application, a fixture for a CNC machine tool is provided, comprising:

[0008] Fixed base;

[0009] The movable seat includes a movable seat body, a first lead screw and a first motor. The movable seat body is rotatably connected to the fixed seat to achieve flipping. A first sliding groove extending in a first direction is opened on the side of the movable seat body. The first lead screw rotates in the first sliding groove. The first motor is connected to one end of the first lead screw to drive it.

[0010] A flipping drive mechanism is connected to the fixed base and drives the movable base body to flip.

[0011] A clamping seat is threadedly connected to the first lead screw. The clamping seat is driven by the first lead screw to move along the first slide groove. The clamping seat is provided with a second slide groove extending in a second direction.

[0012] The clamping mechanism includes a second lead screw, a lead screw seat, a telescopic drive member, and a pressure plate. The second lead screw rotates in the second slide groove. The lead screw seat is threadedly connected to the second lead screw. The lead screw seat is driven by the second lead screw and moves along the second slide groove. The telescopic drive member is fixedly connected to the lead screw seat. The pressure plate is connected to the drive end of the telescopic drive member and is driven by it to move in a third direction.

[0013] According to an embodiment of this application, there are two second sliding grooves on the clamping seat and two clamping mechanisms that are arranged in a one-to-one correspondence. The clamping mechanism also includes a linkage gear, which is connected to the end of the second lead screw. The linkage gears of the two clamping mechanisms mesh with each other.

[0014] According to an embodiment of this application, the fixture for the CNC machine tool further includes a second motor, the output end of which is connected to one of the linkage gears.

[0015] According to an embodiment of this application, the first lead screw further includes a left-handed portion and a right-handed portion, the left-handed portion and the right-handed portion having opposite rotation directions, and the number of clamping seats is two, each corresponding to the left-handed portion and the right-handed portion in a threaded connection.

[0016] According to an embodiment of this application, the flipping drive mechanism further includes a flipping motor and a flipping gear. The flipping gear is mounted on the hinge shaft between the movable seat and the fixed seat, and a gear for meshing with the flipping gear is mounted on the output shaft of the flipping motor.

[0017] According to an embodiment of this application, the fixture for the CNC machine tool further includes a side push assembly, which includes a side push seat, a side push plate, and a side push drive mechanism; the movable seat further includes a third lead screw and a third motor, and a third slide groove extending along a first direction is provided on the side of the movable seat body, the third lead screw rotates in the third slide groove, the third motor is connected to one end of the third lead screw to drive it, the side push seat is threadedly connected to the third lead screw, and the side push seat moves along the third slide groove under the drive of the third lead screw; the side push drive mechanism is installed on the side push seat, and the side push drive mechanism drives the side push plate to move along a second direction.

[0018] According to an embodiment of this application, the side-push driving mechanism further includes a fourth lead screw, a fourth motor, two sliders, and two connecting rods. The side-push seat has a fourth sliding groove, in which the fourth lead screw rotates. The fourth motor is connected to one end of the fourth lead screw to drive it. The fourth lead screw includes a left-handed portion and a right-handed portion with opposite directions of rotation. The two sliders are threadedly connected to the left-handed portion and the right-handed portion of the fourth lead screw, respectively. One end of each of the two connecting rods is hinged to one of the two sliders, respectively. The other end of each of the two connecting rods is hinged to the side-push plate.

[0019] According to an embodiment of this application, the side push drive mechanism further includes a guide seat and a guide rod. The guide seat is fixedly connected to the side push seat, the guide rod is slidably connected to the guide seat, the end of the guide rod is fixed to the side push plate, and the two connecting rods are symmetrically arranged about the guide rod as an axis.

[0020] According to an embodiment of this application, the fixed seat further includes a fixed seat body, a lifting push rod, and a base. The movable seat body is rotatably connected to the fixed seat body, and the two ends of the lifting push rod are respectively connected to the fixed seat body and the base.

[0021] According to an embodiment of this application, the top array of the movable seat body is further provided with multiple rollers.

[0022] The beneficial effects of the embodiments of this application include at least the following: the movable seat body in this application can be flipped to clamp workpieces at different angles, and the clamping position of the pressure plate can be adjusted by the first lead screw or the second lead screw, thereby reducing interference with the processing process. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this application, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a fixture for a CNC machine tool according to an embodiment of this application;

[0025] Figure 2 yes Figure 1 A magnified view of a portion of the image;

[0026] Figure 3 This is a schematic diagram of the structure of the clamping seat 400 and the clamping mechanism 500 in the fixture used for CNC machine tools according to an embodiment of this application;

[0027] Figure 4 yes Figure 3 A magnified view of a portion of the image;

[0028] Figure 5 This is a schematic diagram of the side-pushing assembly 700 in the fixture used in CNC machine tools according to an embodiment of this application.

[0029] Reference numerals: 110-Fixed seat body, 120-Lifting push rod, 130-Base, 210-Modible seat body, 211-First slide groove, 213-Roller, 220-First lead screw, 230-First motor, 240-Third lead screw, 250-Third motor, 300-Tilting drive mechanism, 310-Tilting motor, 320-Tilting gear, 400-Clamping seat, 410-Second slide groove, 500-Clamping mechanism, 520-Lead screw seat, 530-Telescopic drive component, 540-Pressure plate, 550-Linkage gear, 600-Second motor, 700-Side push assembly, 710-Side push seat, 711-Fourth slide groove, 720-Side push plate, 730-Side push drive mechanism, 731-Fourth lead screw, 732-Fourth motor, 733-Slider, 734-Connecting rod, 735-Guide seat, 736-Guide rod. Detailed Implementation

[0030] This section will describe in detail the specific embodiments of this application. Preferred embodiments of this application are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of this application, but they should not be construed as limiting the scope of protection of this application.

[0031] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0032] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0034] Reference Figure 1 The fixture for CNC machine tools in this embodiment includes a fixed base, a movable base, a tilting drive mechanism 300, a clamping base 400, and a clamping mechanism 500. The fixed base and the movable base constitute the main structure of the fixture. Specifically, the fixed base includes a fixed base body 110, a lifting push rod 120, and a base 130. The two ends of the lifting push rod 120 are connected to the fixed base body 110 and the base 130, respectively, so that the height of the fixed base body 110 can be adjusted by extending and retracting the lifting push rod 120.

[0035] The movable seat includes a movable seat body 210, a first lead screw 220, and a first motor 230. The movable seat body 210 is rotatably connected to the fixed seat body 110 to achieve flipping. The flipping drive mechanism 300 is connected to the fixed seat and drives the movable seat body 210 to flip. Multiple rollers are arrayed on the top of the movable seat body 210 to facilitate the movement of workpieces to the top of the movable seat body 210. A first groove 211 extending along a first direction x is formed on the side of the movable seat body 210. The first lead screw 220 rotates in the first groove 211, and the first motor 230 is connected to one end of the first lead screw 220 to drive it.

[0036] Reference Figure 2 Specifically, the flipping drive mechanism 300 includes a flipping motor 310 and a flipping gear 320. The flipping gear 320 is mounted on the hinge shaft of the movable seat body 210 and the fixed seat. A gear for meshing with the flipping gear 320 is mounted on the output shaft of the flipping motor 310, so that the flipping motor 310 can drive the flipping gear 320 to rotate, thereby driving the movable seat body 210 to flip.

[0037] The clamping seat 400 is threadedly connected to the first lead screw 220. Driven by the first lead screw 220, the clamping seat 400 moves along the first slide groove 211, thereby changing its position in the first direction x. (Refer to...) Figure 3 The clamping seat 400 is also provided with a second slide groove 410 extending along the second direction y.

[0038] The clamping mechanism 500 is used to fix the workpiece. It includes a second lead screw, a lead screw seat 520, a telescopic drive member 530, and a pressure plate 540. The second lead screw rotates in the second slide groove 410. The lead screw seat 520 is threadedly connected to the second lead screw and moves along the second slide groove 410 driven by the second lead screw. The telescopic drive member 530 is fixedly connected to the lead screw seat 520. The pressure plate 540 is connected to the drive end of the telescopic drive member 530 and is driven by it to move along the third direction z. When it is necessary to fix the workpiece, the workpiece is placed on top of the movable seat body 210. The second lead screw drives the telescopic drive member 530 to approach the workpiece along the second direction y, and the telescopic drive member 530 drives the pressure plate 540 to press against the workpiece along the third direction z, thereby clamping and fixing the workpiece together with the movable seat body 210.

[0039] Furthermore, the clamping base 400 has two second sliding grooves 410 and two clamping mechanisms 500, which are arranged in a one-to-one correspondence. The clamping mechanism 500 also includes a linkage gear 550, as shown in the figure. Figure 4 The two clamping mechanisms 500 have intermeshing gears 550. When one gear 550 rotates, the other rotates in the opposite direction, causing the two lead screw seats 520 to move in opposite directions. When the fixing point of one of the pressure plates 540 interferes with machining, the other pressure plate 540 can be moved forward to fix the workpiece by rotating the gear 550, thereby changing the fixing point to make room for machining. Furthermore, the fixture for the CNC machine tool also includes a second motor 600, the output of which is connected to one of the gears 550, so that the second motor 600 drives the rotation of the gear 550.

[0040] Furthermore, the first lead screw 220 includes a left-handed portion and a right-handed portion with opposite directions of rotation. The left-handed portion and the right-handed portion are integral structures. There are two clamping seats 400, which are threadedly connected to the left-handed portion and the right-handed portion respectively. When the first lead screw 220 is rotated, the two clamping seats 400 can move closer to each other or further away from each other, thereby facilitating the adjustment of the distance between the two clamping seats 400.

[0041] Furthermore, the fixture for CNC machine tools also includes a side-pushing assembly 700, as shown in the reference. Figure 5The side-push assembly 700 includes a side-push seat 710, a side-push plate 720, and a side-push drive mechanism 730. The movable seat also includes a third lead screw 240 and a third motor 250. A third slide groove extending along a first direction x is formed on the side of the movable seat body 210. The third lead screw 240 rotates in the third slide groove. The third motor 250 is connected to one end of the third lead screw to drive it. The side-push seat 710 is threadedly connected to the third lead screw 240. Driven by the third lead screw 240, the side-push seat 710 moves along the third slide groove, thereby adjusting its position in the first direction x. The side-push drive mechanism 730 is mounted on the side-push seat 710 and drives the side-push plate 720 to move along a second direction y, thereby allowing the side-push plate 720 to apply a lateral force to the workpiece, thus adjusting the position of the workpiece on the movable seat body 210.

[0042] Specifically, the side-push drive mechanism includes a fourth lead screw 731, a fourth motor 732, two sliders 733, and two connecting rods 734. The side-push base 710 has a fourth sliding groove 711, in which the fourth lead screw 731 rotates. The fourth motor 732 is connected to one end of the fourth lead screw 731 to drive it. The fourth lead screw 731 includes a left-handed portion and a right-handed portion with opposite rotation directions. The two sliders 733 are threadedly connected to the left-handed portion and the right-handed portion of the fourth lead screw 731, respectively. One end of each of the two connecting rods 734 is hinged to one of the two sliders 733, and the other end of each connecting rod 734 is hinged to the side-push plate, thus forming a scissor structure. When the fourth lead screw 731 rotates, it can drive the side-push plate 720 to move along the second direction y.

[0043] Furthermore, the side-push drive mechanism 730 also includes a guide seat 735 and a guide rod 736. The guide seat 735 is fixedly connected to the side-push seat 710, and the guide rod 736 is slidably connected to the guide seat 735. The end of the guide rod 736 is fixed to the side-push plate, and two connecting rods 734 are symmetrically arranged about the guide rod 736. Thus, the guide rod 736 guides the movement of the side-push plate 720 and prevents it from deviating during movement.

[0044] The above is a detailed description of the preferred embodiments of this application. However, this application is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A fixture for a numerically controlled machine tool, characterized in that, The utility model relates to a clamp for numerical control machine tool, including: Fixed seat; Movable seat, movable seat body is connected with fixed seat rotation to realize overturning, the side surface of movable seat body is opened first sliding slot extending along first direction, first screw rotates in first sliding slot, first motor is connected with one end of first screw to drive it; Overturning drive mechanism is connected with fixed seat and drives movable seat body overturning; Clamping seat, clamping seat is connected with first screw thread, clamping seat is driven along first sliding slot by first screw, clamping seat is opened second sliding slot extending along second direction; Clamping mechanism, including second screw, screw rod seat, telescopic drive part and pressing plate, second screw rotates in second sliding slot, screw rod seat is connected with second screw thread, screw rod seat is driven along second sliding slot by second screw, telescopic drive part is fixedly connected with screw rod seat, pressing plate is connected to the drive end of telescopic drive part and is driven along third direction movement; Wherein, the second sliding slot on the clamping seat and the clamping mechanism are two and one-to-one arrangement, the clamping mechanism further includes linkage gear, the linkage gear is connected with the end of second screw, and the linkage gears of two clamping mechanisms are engaged with each other.

2. The fixture for a numerically controlled machine tool according to claim 1, characterized in that: The clamp for numerical control machine tool further includes a second motor, and an output end of the second motor is connected with one of the linkage gears.

3. The fixture for a numerically controlled machine tool according to claim 1, characterized in that: The first screw includes a left-handed portion and a right-handed portion, the left-handed portion and the right-handed portion are opposite in rotation direction, and the number of clamping seats is two and is one-to-one corresponding to the left-handed portion and the right-handed portion respectively.

4. The fixture for a numerically controlled machine tool according to claim 1, characterized in that: The overturning drive mechanism includes an overturning motor and an overturning gear, the overturning gear is installed on the hinge shaft of the movable seat and the fixed seat, and a gear for engaging with the overturning gear is installed on an output shaft of the overturning motor.

5. The fixture for a numerically controlled machine tool according to claim 1, characterized in that: The clamp for numerical control machine tool further includes a side pushing assembly, the side pushing assembly includes a side pushing seat, a side pushing plate and a side pushing drive mechanism; the movable seat further includes a third screw and a third motor, a third sliding slot extending along a first direction is formed on a side surface of the movable seat body, the third screw rotates in the third sliding slot, the third motor is connected with one end of the third screw to drive it, the side pushing seat is connected with the third screw thread, and the side pushing seat is driven along the third sliding slot by the third screw; the side pushing drive mechanism is installed on the side pushing seat, and the side pushing drive mechanism drives the side pushing plate to move along a second direction.

6. The fixture for a numerically controlled machine tool according to claim 5, characterized in that: The side pushing driving mechanism comprises a fourth screw rod, a fourth motor, two sliding blocks and two connecting rods, the side pushing seat is provided with a fourth sliding groove, the fourth screw rod rotates in the fourth sliding groove, and the fourth motor is connected with one end of the fourth screw rod to drive the fourth screw rod.

7. The fixture for a numerically controlled machine tool according to claim 6, characterized in that: The side pushing driving mechanism further comprises a guide seat and a guide rod, the guide seat is fixedly connected with the side pushing seat, the guide rod is slidably connected with the guide seat, and the end of the guide rod is fixedly connected with the side pushing plate.

8. The fixture for a CNC machine tool according to claim 1, characterized in that: The fixed seat comprises a fixed seat body, a lifting push rod and a base, the movable seat body is rotationally connected with the fixed seat body, and the two ends of the lifting push rod are respectively connected to the fixed seat body and the base.

9. The fixture for a numerically controlled machine tool according to claim 1, characterized in that: The top of the movable seat body is arrayed with a plurality of rollers.

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