Pressing plate and numerical control machine tool

Abstract

The utility model discloses a pressure plate and numerical control machine tool, including at least one group of fork-shaped plate subassembly, at least two liftable support piece, at least two support locating piece and work bench, each group of fork-shaped plate subassembly includes at least two fork-shaped plate, the front end of each fork-shaped plate is equipped with the fork-shaped clamping and pressing part, and the fork-shaped clamping and pressing part is equipped with the fork-shaped clamping and pressing part. The lifting supporting pieces are arranged on a workbench of the machine tool and make contact with the lower end faces of the fork-shaped plates in a matched mode, and the supporting positioning pieces are arranged on the workbench and connected with the fork-shaped plates in a locked mode. According to the utility model, workpieces with different shapes and sizes, such as cylinders or rectangles, can be clamped at the same time; the fork-shaped plate of the pressing plate can rotate by 360 degrees along the screw rod, the position of the fork-shaped plate can be adjusted at will, the free adjustment range is large, the occupied area of the workbench is reduced, height interference between clamps is avoided, and the utilization rate of the working space is increased; the method can be suitable for all numerical control machine tools and is wide in application range; manufacturing is easy, machining cost is low, and use is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of machine tool fixtures, and in particular relates to a pressing plate and a numerically controlled machine tool. Background Art

[0002] The machine tool fixture is a very important additional device for the machine tool, which is used to clamp the workpiece. With the extensive development of the machinery industry, CNC machine tools have become an important part of the modern manufacturing industry. In order to improve production efficiency, CNC machine tools can process multiple workpieces at one time. When processing multiple workpieces, CNC machine tools need to use multi-station machine tool fixtures to clamp the workpieces, and then set the positions and processing parameters of multiple workpieces in the CNC program, so that the equipment can complete the processing of multiple workpieces at one time according to the preset program. Therefore, the machine tool fixture is a key factor in ensuring the processing accuracy and processing efficiency of CNC machine tools. At present, when CNC machine tools process multiple workpieces of different shapes and sizes at the same time, they often need to use many different fixtures to clamp the workpieces. When the workpiece is too large or too high, it cannot be clamped with a bench vise, and multiple ordinary pressure plates need to be clamped, which is complicated to operate and difficult to position; when there are too many workbench fixtures, the use of ordinary pressure plates will cause high interference problems. These situations can easily make the fixture unable to accurately position and the coordinate system offset, resulting in unqualified products and scrap problems, which seriously affect the processing efficiency of CNC machine tools. Summary of the invention

[0003] The utility model aims to provide a pressing plate and a numerically controlled machine tool. A fork-shaped clamping portion and a pressing portion of a trapezoidal structure are respectively arranged at both ends of the pressing plate, which can both clamp and press the workpiece. A plurality of pressing plates can be used to clamp workpieces of different shapes and sizes such as cylinders or rectangles at the same time. The fork-shaped plate of the pressing plate can rotate 360 ​​degrees along a screw rod, and the clamping position of the fork-shaped plate can be adjusted arbitrarily. The free adjustment range is large, which can reduce the occupied area of ​​the workbench, avoid height interference between fixtures, and greatly improve the utilization rate of the working space. The pressing plate can be applied to all numerically controlled machine tools and has a wide range of applications. The pressing plate is easy to manufacture, has a low processing cost, and is easy to use.

[0004] The specific contents of the plan are as follows:

[0005] A pressure plate includes at least one group of fork plate assemblies, at least two liftable support members, at least two support positioning members and a workbench. Each group of fork plate assemblies includes at least two fork plates. A fork-shaped clamping portion is provided at the front end of each fork plate. The liftable support members are respectively seated on the workbench of a machine tool and are respectively matched and contacted with the lower end surface of each fork plate. The support positioning members are arranged on the workbench and are respectively locked and connected with each fork plate.

[0006] The liftable support is arranged between the workbench and the fork plate. The support positioning member is arranged in an inverted T-shaped groove or a positioning installation hole on the workbench, the support positioning member is locked and connected with the fork plate, and the fork plate is pressed on the top surface of the liftable support. The front end of the fork plate is provided with a fork-shaped clamping portion, and the rear end of the fork plate is provided with a clamping portion of a trapezoidal structure. When the CNC machine tool processes two workpieces of different shapes at the same time, at least one set of fork plate assemblies is used to clamp the two workpieces. The number of fork plates in a set of fork plate assemblies is at least two, at least two liftable support members, and at least two support positioning members. The fork plate, liftable support member and support positioning member are used in a one-to-one correspondence. The fork-shaped clamping portions of the two pressing plates are arranged facing each other on a straight line, and the cylindrical workpiece is clamped in the openings of the two fork-shaped clamping portions, and the clamping portion of the trapezoidal structure at the rear end of one of the fork plates presses the rectangular workpiece. The two pressing plates and the two workpieces are arranged on a straight line.

[0007] Furthermore, a slot is provided in the middle of the fork-shaped plate, and each supporting positioning member includes a bolt and a nut. The head of the bolt is arranged on the workbench, the screw rod of the bolt is passed through the workbench and its upper part is exposed outside the upper end surface of the workbench, the screw rod is sleeved in the slot of the fork-shaped plate, and the nut is screwed with the screw rod exposed on the upper surface of the slot and is limitedly contacted with the upper surface of the fork-shaped plate at the outer edge of the slot.

[0008] A slot is provided in the middle of the fork plate, and the head of the bolt supporting the positioning piece is set on the workbench. The screw of the bolt passes upward from the surface of the workbench and is sleeved in the slot. The part of the bolt exposed on the upper surface of the slot is locked with the nut. The nut is limited and contacts the upper surface of the fork plate at the outer edge of the slot. The diameter of the slot is larger than the diameter of the screw. When the nut is loosened, the fork plate can be rotated 360 degrees, which is convenient for adjusting the clamping position of the fork plate and helps to reduce the occupied area of ​​the workbench. The length of the bolt can be selected according to the height of the rectangular workpiece to meet the clamping needs of rectangular workpieces of different heights. Hexagonal nuts are used for nuts. Hexagonal nuts are more stable and not easy to loosen during processing. They are also easy to install and can be locked using a wrench.

[0009] Furthermore, an inner side wall of the fork-shaped clamping portion of the fork-shaped plate is provided with an inclined surface.

[0010] Furthermore, the opening angle of the fork-shaped clamping portion of the fork-shaped plate is 60 degrees to 90 degrees.

[0011] Furthermore, an anti-slip pattern is provided on the upper portion of the inner side wall of the fork-shaped clamping portion of the fork-shaped plate.

[0012] The opening angle of the fork-shaped clamping part of the fork-shaped plate ranges from 60 degrees to 90 degrees, and is used to clamp cylindrical workpieces of different diameters. The fork-shaped plate with an opening angle of 90 degrees is used to clamp cylindrical workpieces with a diameter less than or equal to 150 mm. The fork-shaped plate with an opening angle between 60 degrees and 90 degrees is used to clamp cylindrical workpieces with a diameter greater than 150 mm. The opening angle of the fork-shaped clamping part is set to 60 degrees to 90 degrees, the inner side wall of the fork-shaped clamping part is provided with an inclined surface, and the upper part of the inner side wall of the fork-shaped clamping part is provided with an anti-slip pattern. These three designs ensure that in addition to the clamping force applied to the cylindrical workpiece during the processing of the fork-shaped plate, there is also downward pressure, and the friction force is increased, so as to completely limit the rotation of the cylindrical workpiece and the vertical movement.

[0013] Furthermore, the liftable support member is a jack, the lower end of the jack contacts the work surface, and the upper end of the jack contacts the lower end surface of the fork plate.

[0014] The lifting support is a jack, which is placed on a workbench, with the lower end of the jack in contact with the upper surface of the workbench, and the upper end of the jack in contact with the lower end surface of the fork plate. The height of the jack is adjusted to be consistent with the height of the rectangular workpiece, ensuring that the fork plate can press the rectangular workpiece tightly.

[0015] Furthermore, a pressing portion of a trapezoidal structure is provided at the rear end of the fork-shaped plate.

[0016] The rear end of the fork-shaped plate is provided with a pressing portion of a trapezoidal structure, and the pressing portion of the trapezoidal structure is pressed on the rectangular workpiece to apply a downward pressing force to the rectangular workpiece.

[0017] Furthermore, the workbench is provided with a plurality of parallel inverted T-shaped grooves, and the heads of the bolts are slidably connected in the inverted T-shaped grooves, or, the workbench is provided with a plurality of positioning mounting holes, the screw rods of the bolts are passed through the positioning mounting holes of the workbench and the heads of the bolts are limitedly contacted with the sunken platform on the lower surface of the workbench at the outer edges of the positioning mounting holes.

[0018] The workbench is provided with a plurality of inverted T-shaped slots arranged in parallel, the head of the bolt is slidably connected in the inverted T-shaped slot, the screw rod of the bolt passes upward through the upper surface of the workbench and is sleeved in the slot hole in the middle of the fork-shaped plate, the portion of the screw rod exposed on the upper surface of the slot hole is locked and connected by a nut, and the nut is locked and limited on the upper surface of the fork-shaped plate at the outer edge of the slot hole. A plurality of positioning and mounting holes are provided at the lower end surface of the workbench without the inverted T-shaped slots, the positioning and mounting holes are countersunk holes, the head of the bolt is provided in the positioning and mounting holes and does not expose the lower end surface of the workbench. The screw rod passes upward through the upper surface of the workbench and is sleeved in the slot hole in the middle of the fork-shaped plate, the portion of the screw rod exposed on the upper surface of the slot hole is locked and connected by a nut, and the nut is locked and limited on the upper surface of the fork-shaped plate at the outer edge of the slot hole.

[0019] Furthermore, there are two groups of fork-shaped plate assemblies, and the two groups of fork-shaped plate assemblies are symmetrically arranged along the length direction or the width direction of the workbench.

[0020] When clamping multiple workpieces of different shapes, two sets of fork plate assemblies can be used to clamp the workpieces. The number of each set of fork plate assemblies is at least two. Using multiple sets of fork plate assemblies can clamp the workpieces more firmly, and the workpieces will not move or rotate during the processing.

[0021] A numerically controlled machine tool comprises the pressing plate.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] 1. The two ends of the fork-shaped plate of the utility model are provided with a pressing part of a trapezoidal structure and a fork-shaped clamping part, which can be used to press and clamp the workpiece. Multiple pressing plates can be used to clamp multiple workpieces of different shapes and sizes such as cylinders or rectangles.

[0024] 2. The fork-shaped plate of the utility model can rotate 360 ​​degrees along the screw rod, and the clamping position of the fork-shaped plate can be adjusted arbitrarily. The free adjustment range is large, which can reduce the occupied area of ​​the workbench, avoid height interference between clamps, and greatly improve the utilization rate of the working space.

[0025] 3. The pressing plate of the utility model can be applied to both CNC machine tools with inverted T-slots on the workbench and CNC machine tools without inverted T-slots on the workbench. It can be applied to all CNC machine tools and has a wide range of applications.

[0026] 4. The fork-shaped plate of the utility model has a simple structure and is easy to process. The jack, bolts and nuts are all standard products, with low manufacturing cost and easy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the utility model being applied to a workbench provided with an inverted T-shaped groove;

[0028] Figure 2 It is a schematic diagram of the bolts of the utility model being arranged in a workbench;

[0029] Figure 3 It is a schematic diagram of the inclined surface of the inner side wall of the fork-shaped clamping portion of the utility model;

[0030] Figure 4 It is a structural schematic diagram of the fork-shaped clamping portion of the utility model when the opening angle is 60 degrees;

[0031] Figure 5 It is a structural schematic diagram of the fork-shaped clamping portion of the utility model when the opening angle is 90 degrees;

[0032] Figure 6 It is a schematic diagram of the jack of the utility model;

[0033] Figure 7 It is a schematic diagram of the utility model being applied on a workbench provided with positioning and mounting holes.

[0034] In the figure: 1. Fork plate assembly; 1-1. Fork plate; 1-1-1. Fork clamping part; 1-1-1-1. Inclined surface; 1-1-1-2. Anti-slip pattern; 1-1-2. Slotted hole; 1-3. Clamping part of trapezoidal structure; 2. Liftable support member; 3. Support positioning member; 3-1. Bolt; 3-1-1. Head of bolt; 3-1-2. Screw; 3-2. Nut; 4. Workbench; 4-1. Inverted T-slot; 4-2. Positioning and mounting hole; 5. Cylindrical workpiece; 6. Rectangular workpiece. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "an", "the" and "the" used in the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0037] It should be noted that the directions or positional relationships indicated by the terms "front", "rear", "inside" and "outside" in the present invention 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 therefore cannot be understood as a limitation on the present invention.

[0038] It should be particularly noted that any symbols and / or numbers in the specification that are not marked in the accompanying drawings are not drawing marks.

[0039] The embodiment provided by the utility model, that is, an embodiment of a pressing plate and a CNC machine tool, is described below in combination with Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7Provide detailed explanation.

[0040] Embodiment 1:

[0041] A pressure plate, see Figure 1 As shown, it includes at least one group of fork plate components 1, at least two liftable support members 2, at least two support positioning members 3 and a workbench 4. Each group of fork plate components 1 includes at least two fork plates 1-1. The front end of each fork plate 1-1 is provided with a fork clamping portion 1-1-1. The liftable support members 2 are respectively seated on the workbench 4 of the machine tool and are respectively matched and contacted with the lower end surface of each fork plate 1-1. The support positioning members 3 are arranged on the workbench 4 and are respectively locked and connected with each fork plate 1-1.

[0042] A slot 1-1-2 is provided in the middle of the fork-shaped plate 1-1. Each supporting positioning member 3 includes a bolt 3-1 and a nut 3-2. Figure 1 , Figure 2 As shown, the head 3-1-1 of the bolt 3-1 is arranged on the workbench 4, the screw 3-1-2 of the bolt 3-1 is passed through the workbench 4 and its upper part is exposed outside the upper end surface of the workbench 4, the screw is sleeved in the slot of the fork plate 1-1, and the nut 3-2 is screwed with the screw 3-1-2 exposed on the upper surface of the slot and is limitedly contacted with the upper surface of the fork plate 1-1 at the outer edge of the slot.

[0043] See Figure 3 As shown, the inner side wall of the fork-shaped clamping portion 1-1-1 of the fork-shaped plate 1-1 is provided with an inclined surface 1-1-1-1.

[0044] See Figure 4 , Figure 5 As shown, the opening angle of the fork-shaped clamping portion 1-1-1 of the fork-shaped plate 1-1 is 60 degrees to 90 degrees.

[0045] See Figure 3 As shown, the upper portion of the inner side wall of the fork-shaped clamping portion 1-1-1 of the fork-shaped plate 1-1 is provided with an anti-slip pattern 1-1-1-2.

[0046] See Figure 1 , Figure 6 , Figure 7 As shown, the liftable support member 2 is a jack, the lower end of the jack contacts the surface of the workbench 4, and the upper end of the jack contacts the lower end surface of the fork plate 1-1.

[0047] See Figure 3 , Figure 4 , Figure 5 As shown, the rear end of the fork-shaped plate 1-1 is provided with a pressing portion 1-1-3 of a trapezoidal structure.

[0048] See Figure 1As shown, the workbench 4 is provided with a plurality of parallel inverted T-shaped slots 4-1, and the head 3-1-1 of the bolt 3-1 is slidably connected in the inverted T-shaped slot 4-1, or, see Figure 7 As shown, a plurality of positioning and mounting holes 4-2 are provided on the workbench 4, and the screw rod 3-1-2 of the bolt 3-1 is passed through the positioning and mounting hole 4-2 of the workbench 4 and the head 3-1-1 of the bolt 3-1 is limitedly contacted with the lower surface of the workbench 4 at the outer edge of the positioning and mounting hole 4-2.

[0049] Taking the example of using a pressing plate to clamp a cylindrical workpiece 5 and a rectangular workpiece 6 on a workbench 4 provided with an inverted T-shaped groove 4-1, the specific operation is described in detail as follows:

[0050] A pressing plate is used to clamp a cylindrical workpiece 5 and a rectangular workpiece 6. A pressing plate includes a set of fork plate assemblies 1, and the number of fork plates 1-1 in a set of fork plate assemblies 1 is two. One pressing plate is the most basic quantity requirement for clamping two workpieces of different shapes at the same time. In actual processing, multiple pressing plates can be used for clamping, which can obtain a better clamping effect. A plurality of parallel inverted T-shaped grooves 4-1 are arranged on the workbench 4 along the length direction of the workbench. Two workpieces and two fork plates 1-1 are arranged on the same inverted T-shaped groove 4-1. The two fork plates 1-1 are respectively arranged on both sides of the cylindrical workpiece 5, and the heads 3-1-1 of the corresponding two supporting positioning members 3 are respectively slidably connected in the inverted T-shaped groove 4-1 between the two workpieces, and the screw rod 3-1-2 of the bolt 3-1 is penetrated in the workbench 4, and in the slot hole 1-2 set in the middle of the fork plate 1-1, and the screw rod 3-1-2 passes through the upper surface of the workbench 4 and is sleeved in the slot hole 1-2. The two corresponding jacks 2 are respectively placed on the workbench 4, the lower end surface of the jack 2 contacts the upper surface of the workbench 4, and the upper end of the jack 2 contacts the lower end surface of the fork plate. The height of the jack 2 is adjusted to be consistent with the height of the rectangular workpiece 6. The positions of the two fork plates 1-1 are adjusted along the direction of the screw so that the fork-shaped clamping parts 1-1-1 of the two fork plates 1-1 clamp the cylindrical workpiece 5; the rectangular workpiece 6 is set on the other side of one of the fork plates 1-1, and the lower end surface of the clamping part 1-3 of the trapezoidal structure of the fork plate 1-1 is pressed on the upper surface of the rectangular workpiece 6. The corresponding hexagonal nut 3-2 is locked and connected with the screw 3-1-2 passing through the fork plate. After the hexagonal nut 3-2 is locked, it is pressed on the upper surface of the fork plate 1-1. The fork-shaped clamping parts 1-1-1 of the two fork plates 1-1 apply downward pressure to the cylindrical workpiece 5, so that the cylindrical workpiece 5 does not rotate itself during the processing, and does not move in the horizontal and vertical directions; the clamping part 1-3 of the trapezoidal structure crimped on the upper surface of the rectangular workpiece 6 presses the rectangular workpiece 6, so that it does not move during the processing. If the diameter of the cylindrical workpiece 5 is less than or equal to 150mm, a fork plate 1-1 with an opening angle of 90 degrees of the fork-shaped clamping part 1-1-1 is selected to clamp it. If the diameter of the cylindrical workpiece 5 is greater than 150mm, a pressure plate with an opening angle of 60 to 90 degrees of the fork-shaped clamping part 1-1-1 is selected to clamp the cylindrical workpiece 5. At this time, one pressing plate is used to complete the clamping operation of two workpieces of different shapes.

[0051] Embodiment 2:

[0052] There are two groups of fork-shaped plate assemblies 1 , and the two groups of fork-shaped plate assemblies 1 are symmetrically arranged along the length direction or the width direction of the workbench 4 .

[0053] Taking the example of using two sets of fork plate assemblies 1 to clamp a rectangular workpiece 6 and two cylindrical workpieces 5 on a workbench 4 provided with an inverted T-slot 4-1, the specific operation is described in detail as follows:

[0054] See Figure 1 As shown, a plurality of parallel inverted T-shaped grooves 4-1 are arranged along the length direction of the workbench 4. Each group of fork plate assemblies 1 includes three fork plates 1-1. Three liftable supports 2 and three liftable supports 3 are correspondingly arranged. Three workpieces are arranged at intervals on an inverted T-shaped groove 4-1, and two cylindrical workpieces 5 are arranged on both sides of a rectangular workpiece 6. A fork plate 1-1 is respectively arranged at the interval position between the three workpieces. The heads 3-1-1 of the corresponding bolts 3-1 of the liftable supports 3 are respectively slidably connected in the inverted T-shaped grooves 4-1 at the interval position; the corresponding two jacks 2 are seated on the workbench 4 at the interval position, and the top ends of the jacks 2 touch the lower end surface of the fork plate 1-1. The height of the jack 2 is adjusted to be consistent with the height of the rectangular workpiece 6, and the screw 3-1-2 of the corresponding bolt 3-1 is sleeved in the slot 1-2. The positions of the two fork plates 1-1 are adjusted along the direction of the screw so that the clamping parts 1-3 of the trapezoidal structures of the two fork plates 1-1 are both crimped onto the upper surface of the rectangular workpiece 6. The corresponding screw 3-1-2 that passes through the upper surface of the fork plate 1-1 is locked and connected by the nut 3-2. The locked nut 3-2 is pressed onto the upper surface of the fork plate 1-1, and the clamping parts 1-3 of the trapezoidal structures of the two fork plates 1-1 jointly press the rectangular workpiece 6 so that it will not move during the processing. The fork-shaped clamping parts 1-1-1 of the two fork plates 1-1 respectively clamp and press the cylindrical workpiece 5 on both sides. Along the width direction of the workbench 4, two fork plates 1-1 are symmetrically provided on both sides of each cylindrical workpiece 5, the head 3-1-1 of the corresponding bolt 3-1 slides in the inverted T-slot, the screw 3-1-2 is sleeved in the slot 1-2 of the fork plate 1-1, and the corresponding two jacks 3 are seated on the workbench 4. The positions of the two fork plates 1-1 are adjusted along the direction of the bolt so that the fork-shaped clamping parts 1-1-1 of the two fork plates 1-1 clamp the cylindrical workpiece 5, and then the screw 3-1-2 passing through the upper surface of the fork plate 1-1 is locked and connected with the nut. After the nut is locked, it is pressed on the upper surface of the fork plate 1-1, and the fork-shaped clamping parts 1-1-1 of the two fork plates 1-1 apply downward pressure to the cylindrical workpiece 5, so that the cylindrical workpiece 5 will not rotate itself during the processing, and will not move in the horizontal and vertical directions. At this time, each cylindrical workpiece 5 is clamped by the fork-shaped clamping parts 1-1-1 of the three fork-shaped plates 1-1. So far, the two groups of fork-shaped plate assemblies 1 have completed the clamping of one rectangular workpiece 6 and two cylindrical workpieces 5.

[0055] Embodiment 3:

[0056] Taking the example of using two sets of fork plate assemblies 1 to clamp a rectangular workpiece 6 and two cylindrical workpieces 5 on a workbench 4 without an inverted T-slot 4-1, the specific operation is described in detail as follows:

[0057] See Figure 7As shown, each set of fork-shaped plate components 1 includes three fork-shaped plates 1-1, and correspondingly provided with three liftable support members 2 and three liftable support members 3. The three workpieces are arranged in a straight line along the length direction of the workbench 4, and two cylindrical workpieces 5 are arranged on both sides of the rectangular workpiece 6. At the interval position, the workbench 4 is provided with a positioning installation hole 4-2, and the two fork-shaped plates 1-1 are respectively arranged in the positioning installation holes 4-2, and the screw rod 3-1-2 of the bolt 3-1 of the corresponding liftable support member 3 is inserted into the positioning installation hole 4-2 of the workbench 4, and the head 3-1-1 of the bolt 3-1 is limitedly contacted with the sinking of the lower surface of the workbench 4 at the outer edge of the positioning installation hole 4-2, and the lower end surface of the head 3-1-1 of the bolt 3-1 does not expose the lower end surface of the workbench 4. The screw rod 3-1-2 of the bolt 3-1 passes through the upper surface of the workbench 4, and the corresponding two jacks 2 are respectively set on the workbench 4 at intervals, and the top of the jack 2 contacts the lower end surface of the fork plate 1-1. The height of the jack 2 is adjusted to be consistent with the height of the rectangular workpiece 6. The positions of the two fork plates 1-1 are adjusted along the direction of the screw rod, so that the clamping parts 1-3 of the trapezoidal structures of the two fork plates 1-1 are pressed against the upper surface of the rectangular workpiece 6, and the screw rod 3-1-2 of the bolt 3-1 is sleeved in the slot 1-2 of the fork plate 1-1, and the part of the screw rod 3-1-2 that passes through the upper surface of the fork plate 1-1 is locked and connected by the nut 3-2. The locked nut 3-2 is pressed against the upper surface of the fork plate 1-1, and the clamping parts 1-3 of the trapezoidal structures of the two fork plates 1-1 jointly press the rectangular workpiece 6, so that the rectangular workpiece 6 will not move during processing. The fork-shaped clamping portions 1 - 1 - 1 of the two fork-shaped plates 1 - 1 respectively clamp and press the cylindrical workpieces 5 located on both sides of the rectangular workpiece 6 . Along the width direction of the workbench 4, two fork plates 1-1 are symmetrically provided on both sides of each cylindrical workpiece 5, and the head 3-1-1 of the corresponding bolt 3-1 is limitedly contacted in the positioning installation hole, and the lower end face of the head 3-1-1 will not be exposed from the lower end face of the workbench 4, the screw 3-1-2 is sleeved in the slot 1-2 of the fork plate 1-1, and the corresponding jack 3 is seated on the workbench 4, and the positions of the two fork plates 1-1 are adjusted along the direction of the bolt so that the fork-shaped clamping parts 1-1-1 of the two fork plates 1-1 clamp the cylindrical workpiece 5, and then the part of the screw 3-1-2 that passes through the upper surface of the fork plate 1-1 is locked and connected with the nut, and the nut is pressed on the upper surface of the fork plate 1-1 after being locked, and the fork-shaped clamping parts 1-1-1 of the two fork plates 1-1 exert downward pressure on the cylindrical workpiece 5, so that it will not rotate itself during the processing, and will not move in the horizontal and vertical directions. At this time, each cylindrical workpiece 5 is clamped by the fork-shaped clamping parts 1 - 1 - 1 of the three fork-shaped plates 1 - 1 at the same time. So far, the two sets of fork-shaped plate assemblies 1 have completed the clamping of one rectangular workpiece 6 and two cylindrical workpieces 5 .

[0058] Embodiment 4:

[0059] The utility model also provides a numerically controlled machine tool, comprising the pressing plate.

[0060] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pressing plate, characterized in that: The invention comprises at least one group of fork plate components (1), at least two liftable support members (2), at least two support positioning members (3) and a workbench (4); each group of fork plate components (1) comprises at least two fork plates (1-1); a fork clamping portion (1-1-1) is provided at the front end of each fork plate (1-1); the liftable support members (2) are respectively arranged on the workbench (4) of the machine tool and are respectively matched and contacted with the lower end surface of each fork plate (1-1); and the support positioning members (3) are arranged on the workbench (4) and are respectively locked and connected with each fork plate (1-1).

2. The pressing plate according to claim 1, characterized in that A slot hole (1-1-2) is provided in the middle of the fork-shaped plate (1-1), and each of the supporting positioning members (3) comprises a bolt (3-1) and a nut (3-2), the head (3-1-1) of the bolt (3-1) being arranged on the workbench (4), the screw rod (3-1-2) of the bolt (3-1) being inserted into the workbench (4) and the upper part thereof being exposed outside the upper end surface of the workbench (4), the screw rod being sleeved in the slot hole of the fork-shaped plate (1-1), and the nut (3-2) being screwed with the screw rod (3-1-2) exposed on the upper surface of the slot hole and being limitedly contacted with the upper surface of the fork-shaped plate (1-1) at the outer edge of the slot hole.

3. The pressing plate according to claim 2, characterized in that: The inner side wall of the fork-shaped clamping portion (1-1-1) of the fork-shaped plate (1-1) is provided with an inclined surface (1-1-1-1).

4. The pressing plate according to claim 3, characterized in that: The opening angle of the fork-shaped clamping portion (1-1-1) of the fork-shaped plate (1-1) is 60 degrees to 90 degrees.

5. The pressing plate according to claim 4, characterized in that The upper part of the inner side wall of the fork-shaped clamping portion (1-1-1) of the fork-shaped plate (1-1) is provided with an anti-slip pattern (1-1-1-2).

6. The pressing plate according to claim 5, characterized in that The liftable support member (2) is a jack, the lower end of the jack contacts the surface of the workbench (4), and the upper end of the jack contacts the lower end surface of the fork-shaped plate (1-1).

7. The pressing plate according to claim 6, characterized in that The rear end of the fork-shaped plate (1-1) is provided with a pressing portion (1-1-3) of a trapezoidal structure.

8. The pressing plate according to claim 7, characterized in that The workbench (4) is provided with a plurality of inverted T-shaped grooves (4-1) arranged in parallel, and the head (3-1-1) of the bolt (3-1) is slidably connected in the inverted T-shaped groove (4-1); or, the workbench (4) is provided with a plurality of positioning and mounting holes (4-2), and the screw rod (3-1-2) of the bolt (3-1) is inserted into the positioning and mounting hole (4-2) of the workbench (4) and the head (3-1-1) of the bolt (3-1) is limitedly contacted with the lower surface of the workbench (4) at the outer edge of the positioning and mounting hole (4-2).

9. The pressing plate according to claim 8, characterized in that The fork-shaped plate components (1) are in two groups, and the two groups of fork-shaped plate components (1) are symmetrically arranged along the length direction or the width direction of the workbench (4).

10. A numerically controlled machine tool, characterized in that: Comprising the pressing plate as claimed in any one of claims 1 to 9.

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