Quick clamping jig

Abstract

The utility model discloses a quick clamping fixture, including the fixture seat body for assembling in the worktable of outside machine tool, the pressure block for the workpiece pressure from above and the sliding support bracket of being located the fixture seat body top and being slid on the fixture seat body. First support part for supporting one side of workpiece from below is equipped on the sliding support bracket, and the support bracket is equipped on the fixture seat body and is opposite and is separated from the sliding support bracket in the sliding direction of the sliding support bracket, and second support part for supporting the other side of workpiece from below is equipped on the support bracket. Pressure block is assembled on the support bracket and the sliding support bracket respectively. The quick clamping fixture of the utility model can realize the quick clamping of same specification or different specification workpiece, and saves the clamping time.

Description

Technical Field

[0001] This utility model relates to a jig, and more particularly to a quick clamping jig suitable for clamping, for example but not limited to, sheet metal parts. Background Technology

[0002] As is well known, the use of fixtures (jigs) is indispensable in the machining industry. Fixtures reliably stabilize the workpiece on the machine tool's worktable, thereby ensuring the quality of subsequent machining.

[0003] Currently, Figure 1 The existing fixture 400 shown has the following defects: (1) Since the position of the T-slot 310 of the machine tool's worktable 300 is fixed, while the size and thickness of the plate 200 vary, it is common to encounter a situation where, regardless of where the plate 200 is placed, some of the pressure blocks 410 on different T-slots 310 can press down on the plate 200 while the rest cannot. For example, the following occurs: Figure 1 The two pressure blocks 410 at the middle and rear can press down on the 200 plate. Figure 1 The two pressure blocks 410 at the front center cannot press down on the plate 200, or... Figure 1 The two pressure blocks 410 in the front and middle can press down on the 200 plate. Figure 1 The two pressure blocks 410 at the middle and rear cannot press down on the plate 200, thus wasting a lot of clamping time for the operator.

[0004] (2) Since the pad 420 at the bottom of the plate 200 is movable, if the operator does not pay attention when placing the pad 420, the plate 200 will be drilled at this point, which will damage the pad 420. Alternatively, all the pressure blocks 410 will need to be loosened again, the pad 420 will need to be moved and re-clamped and corrected, which greatly wastes the machine adjustment time.

[0005] (3) Some plates 200 often need to be milled or drilled near the edge. It is difficult for the pressure block 410 to meet the requirements and adjust it to the appropriate position, or a lot of adjustment time will be wasted. Therefore, there is an urgent need for a quick clamping fixture that can quickly clamp workpieces of the same or different specifications to save clamping time. Utility Model Content

[0006] The purpose of this utility model is to provide a quick clamping fixture that can quickly clamp workpieces of the same or different specifications to save clamping time.

[0007] To achieve the above objectives, the quick clamping fixture of this utility model includes a fixture base for mounting on the worktable of an external machine tool, a pressure block for pressing the workpiece from above, and a sliding support frame located above the fixture base and slidably mounted on the fixture base. The sliding support frame has a first support portion for supporting one side of the workpiece from below. The fixture base has a support bracket spaced apart from the sliding support bracket in the sliding direction of the sliding support bracket. The support bracket has a second support portion for supporting the other side of the workpiece from below. The pressure block is respectively mounted on the support bracket and the sliding support frame.

[0008] Compared with the prior art, since the sliding support bracket is located above the fixture base and slides on the fixture base, and the fixture base is used to assemble on the worktable of an external machine tool and is provided with a support bracket that is spaced apart from the sliding support bracket in the sliding direction of the sliding support bracket, and the pressure blocks are respectively assembled on the support bracket and the sliding support bracket, the clamping of the workpiece by the pressure blocks is no longer restricted by the T-slot of the worktable. The distance between the sliding support bracket and the support bracket can be flexibly and quickly adjusted by sliding the sliding support bracket on the fixture base, so that the workpiece is quickly supported from below by the first support part of the sliding support bracket and the second support part of the support bracket. With the cooperation of the pressure blocks on the sliding support bracket and the support bracket, the workpiece is quickly clamped by the first support part and the pressure block corresponding to the first support part and the second support part and the pressure block corresponding to the second support part, thereby saving clamping time and adjustment time.

[0009] Preferably, the sliding support bracket is further provided with a first side stop that is arranged perpendicularly to the first support portion and protrudes upward relative to the first support portion.

[0010] Preferably, the support bracket is further provided with a second side stop that is arranged perpendicularly to the second support portion and protrudes upward relative to the second support portion.

[0011] Preferably, the fixture base is provided with a scale structure extending along the sliding direction of the sliding support frame.

[0012] Preferably, the fixture base is provided with a guide rail that protrudes upward toward the sliding support and extends along the sliding direction of the sliding support, and the sliding support is provided with a slider that slides with the guide rail and a dustproof sheet that covers the slider.

[0013] Preferably, the sliding support is provided with a grip handle for the operator to operate, and the grip handle is located on the side of the sliding support facing away from the support bracket.

[0014] Preferably, each of the sliding support bracket and the support bracket is provided with a connecting nut, and the pressure block is provided with a rotatable connecting bolt passing through it from top to bottom. The connecting bolt is threadedly connected to the connecting nut. The height of the pressure block is adjusted accordingly by the screw-in or screw-out distance of the connecting bolt relative to the connecting nut.

[0015] Preferably, the pressure block is provided with a lower pressing part, and the pressure block is also provided with rotatable support screws passing through it from top to bottom. The support screws are threadedly connected to the pressure block, and the support screws and the lower pressing part are arranged on opposite sides of each other with the connecting bolt as the center. By means of the rotation of the support screws relative to the pressure block, the support screws are correspondingly lifted upward or pressed downward against the sliding support bracket or the support bracket.

[0016] Preferably, the pressure block has two spaced lugs, the pressing part is placed between the two lugs and protrudes downward from the lugs, a shaft is inserted through the pressing part and the two lugs in a spaced direction between the two lugs, the shaft is also assembled and connected to the two lugs, and the pressing part can also rotate around the shaft.

[0017] Preferably, the pressing part is an annular structure with a hardness lower than that of the workpiece.

[0018] Preferably, the sliding support and the support bracket are each elongated strips that are perpendicular to the sliding direction of the sliding support in the horizontal direction.

[0019] Preferably, the sliding support bracket has an embedded assembly groove extending along the length of the sliding support bracket and penetrating the side and top surfaces of the sliding support bracket, and the support bracket has an embedded assembly groove extending along the length of the support bracket and penetrating the side and top surfaces of the support bracket, and the connecting nut is embedded in the embedded assembly groove.

[0020] Preferably, the pressure blocks on the sliding support are a plurality of blocks spaced apart along the length of the sliding support, and each pressure block on the sliding support corresponds to a connecting nut, a connecting bolt and a supporting screw.

[0021] Preferably, the pressure blocks on the support bracket are a plurality of blocks spaced apart along the length of the support bracket, and each pressure block on the support bracket corresponds to a connecting nut, a connecting bolt and a support screw.

[0022] Preferably, the mounting groove is a T-shaped groove, and the connecting nut is correspondingly T-shaped. Attached Figure Description

[0023] Figure 1It is a perspective view of an existing fixture mounted on the worktable of a machine tool and used to clamp plates.

[0024] Figure 2 This is a perspective view of the quick clamping fixture of this utility model when clamping a plate.

[0025] Figure 3 yes Figure 2 The diagram shows an exploded perspective view of the quick-clamping fixture after the sheet metal has been removed.

[0026] Figure 4 Is Figure 3 Based on this, we continue with the three-dimensional exploded view after the sliding support and its components have been removed.

[0027] Figure 5 yes Figure 4 A three-dimensional exploded view from another angle.

[0028] Figure 6 yes Figure 1 A plan view viewed in the direction indicated by arrow B.

[0029] Figure 7 yes Figure 6 Plan view behind the hidden panels.

[0030] Figure 8 This is a perspective view of the sliding support frame, pressure block, connecting nut, connecting bolt and support screw in the quick clamping fixture of this utility model.

[0031] Figure 9 yes Figure 8 3D exploded view.

[0032] Figure 10 yes Figure 9 A further exploded 3D diagram. Detailed Implementation

[0033] To explain the technical content and structural features of this utility model in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0034] Please see Figure 2 and Figure 6 The quick clamping fixture 100 of this utility model is used to clamp the plate 200 so that the plate 200 is indirectly assembled on the worktable of the machine tool through the quick clamping fixture 100 of this utility model, thereby meeting the subsequent processing needs of the plate 200.

[0035] Combined Figure 3 , Figure 4 and Figure 7The quick clamping fixture 100 of this utility model includes a fixture base 10 for mounting on the worktable of an external machine tool, a pressure block 20 for pressing the plate 200 from above, and a sliding support bracket 30 located above the fixture base 10 and slidably mounted on the fixture base 10. The sliding support bracket 30 is provided with a first support part 31 for supporting one side (hereinafter referred to as the first side) of the plate 200 from below. The fixture base 10 is provided with a support bracket 11 that is spaced apart from the sliding support bracket 30 in the sliding direction of the sliding support bracket 30 (see the direction indicated by arrow A and the opposite direction). The support bracket 11 is provided with a second support part 111 for supporting the other side (hereinafter referred to as the second side) of the plate 200 from below. Therefore, in the process of adjusting the sliding support bracket 30, the distance between the second support part 111 and the first support part 31 is adjusted accordingly to match the support needs of plates 200 of different specifications. The pressure blocks 20 are respectively assembled on the support bracket 11 and the sliding support bracket 30 to meet the needs of the pressure blocks 20 on the sliding support bracket 30 and the first support part 31 jointly clamping the first side of the plate 200, and the pressure blocks 20 on the support bracket 11 and the second support part 111 jointly clamping the second side of the plate 200. Specifically, in Figure 7 As an example, the sliding support bracket 30 is further provided with a first side stop 32 arranged perpendicularly to the first support portion 31 and protruding upward relative to the first support portion 31, and the support bracket 11 is further provided with a second side stop 112 arranged perpendicularly to the second support portion 111 and protruding upward relative to the second support portion 111. This design allows the plate 200, supported by the first support portion 31 and the second support portion 111, to be quickly positioned on both the support bracket 11 and the sliding support bracket 30, further improving the speed and efficiency of the quick clamping fixture 100 for clamping the plate 200 of this utility model; in addition, in Figures 2 to 4 As an example, the sliding support 30 and the support bracket 11 are each elongated strips perpendicular to the sliding direction of the sliding support 30 in the horizontal direction. This design increases the dimensions of the first support 31, the first side stop 32, the second support 111, and the second side stop 112 in the direction indicated by arrow B, thereby improving the reliability of clamping the plate 200. More specifically, see the description below.

[0036] like Figure 6 and Figure 7 As shown, as an example, the first support portion 31 and the second support portion 111 are both flat surfaces of equal height placed horizontally, and the first side block portion 32 and the second side block portion 112 are both flat surfaces placed vertically. This arrangement facilitates the manufacture of the first support portion 31 and the first side block portion 32 on the sliding support frame 30, and facilitates the manufacture of the second support portion 111 and the second side block portion 112 on the support bracket 11. More importantly, it ensures the requirement that the plate 200 is placed horizontally. like Figures 2 to 4 and Figures 6 to 7 As shown in the figure, as an example, a connecting nut 40 is embedded in both the sliding support bracket 30 and the support bracket 11, and a rotatable connecting bolt 50 passes through the upper and lower parts of the pressure block 20. The connecting bolt 50 is threadedly connected to the connecting nut 40. Therefore, by adjusting the screw-in or screw-out distance of the connecting bolt 50 relative to the connecting nut 40, the height of the pressure block 20 can be adjusted accordingly to meet the need for the pressure block 20 to press against plates 200 of different thicknesses. In addition, the cooperation between the connecting bolt 50 and the connecting nut 40 makes the space occupied by the pressure block 20 small. Specifically, in Figure 6 and Figure 7 As an example, the pressure block 20 is provided with a lower pressing part 21, and rotatable support screws 60 are also provided vertically through the pressure block 20. The support screws 60 are threadedly connected to the pressure block 20, and the support screws 60 and the lower pressing part 21 are arranged on opposite sides of each other with the connecting bolt 50 as the center. For example, Figure 6 or Figure 7 One of the support screw 60 and the pressing part 21 is located to the left of the connecting bolt 50, and the other is located to the right of the connecting bolt 50. Therefore, for the sliding support bracket 30, the rotation of the support screw 60 relative to the pressing block 20 causes the support screw 60 to be lifted upward away from the sliding support bracket 30 or to abut downward against the sliding support bracket 30. For the support bracket 11, the rotation of the support screw 60 relative to the pressing block 20 causes the support screw 60 to be lifted upward away from the support bracket 11 or to abut downward against the support bracket 11. This design allows the pressing block 20 to have the advantage of greater clamping force while maintaining a small footprint. More specifically, in Figures 8 to 10 In this example, the pressure block 20 has two spaced-apart lugs 22 on its side away from the sliding support 30. A pressing part 21 is positioned between the two lugs 22 and protrudes downwards from them. A shaft 70 passes through the pressing part 21 and the two lugs 22 in a spaced-apart direction (see arrow B). The shaft 70 is also fitted to the two lugs 22, so that the shaft 70 and the two lugs 22 are fixed together and relatively stationary. The pressing part 21 can also rotate around the shaft 70, allowing it to adaptively adjust during the pressing of the plate 200, thus ensuring reliable contact between the pressing part 21 and the plate 200. The pressing part 21 is a ring-shaped structure with a hardness less than that of the plate 200. This design prevents the plate 200 from being marked or even damaged by the pressure block 20. For example, in... Figure 7 In this example, the pressing part 21 is a hexagonal ring structure, but it can also be a triangular, square, pentagonal, or heptagonal ring structure. Furthermore, the pressing part 21 can rotate around the axis 70, allowing it to apply pressure to the plate 200 through surface contact, more effectively preventing indentations or even damage to the plate 200. It should be noted that although... Figure 7The diagram shows that the pressing part 21 is assembled and connected to the lug 22 via the shaft 70. Obviously, depending on actual needs, the pressing part 21 can also be fixed to the pressure block 20 by means of adhesive or other methods. Accordingly, the pressure block 20 no longer has the shaft 70 and lug 22, therefore it is not considered... Figure 7 The above is the limit.

[0037] like Figures 2 to 4 and Figures 6 to 7 As an example, the sliding support bracket 30 has an embedded mounting groove 37 extending along the length of the sliding support bracket 30 (see the direction indicated by arrow B and the opposite direction) and passing through the side surface 35 and top surface 36 of the sliding support bracket 30. The connecting nut 40 corresponding to the sliding support bracket 30 is embedded in the embedded mounting groove 37 to facilitate the quick adjustment of the pressure block 20 on the sliding support bracket 30 along the length of the sliding support bracket 30. Additionally, the support bracket 11 has an embedded mounting groove 115 extending along the length of the support bracket 11 and passing through the side surface 113 and top surface 114 of the support bracket 11. The connecting nut 40 corresponding to the support bracket 11 is embedded in the embedded mounting groove 115 of the support bracket 11 to facilitate the quick adjustment of the pressure block 20 on the support bracket 11 along the length of the support bracket 11. Specifically, in Figure 6 and Figure 7 In this example, the mounting groove 37 (115) is a T-shaped groove, and correspondingly, the connecting nut 40 is T-shaped to improve the uniformity of the force applied to the connecting nut 40 on the support bracket 11 and the uniformity of the force applied to the connecting nut 40 on the sliding support bracket 30. Obviously, the mounting groove 37 (115) and the connecting nut 40 can be other shapes according to actual needs, so it is not limited to these shapes. Figure 6 and Figure 7 The above is the limit.

[0038] In order to further improve the stability of the clamping of plate 200, at Figures 2 to 4 In the example shown, the pressure blocks 20 on the sliding support 30 are two arranged spaced apart along the length of the sliding support 30. Obviously, depending on actual needs, there can be three, four, or five, so it is not considered that... Figures 2 to 4 As shown, each pressure block 20 on the sliding support bracket 30 corresponds to a connecting nut 40, a connecting bolt 50, and a support screw 60. Additionally, Figures 2 to 4 In the example shown, the pressure blocks 20 on the support bracket 11 are two arranged spaced apart along the length of the support bracket 11. Obviously, depending on actual needs, there can be three, four, or five, so it is not considered that... Figures 2 to 4 As shown in the figure; each pressure block 20 on the support bracket 11 corresponds to a connecting nut 40, a connecting bolt 50 and a support screw 60.

[0039] like Figures 2 to 4 As shown, as an example, the fixture base 10 is provided with a scale structure 12 extending along the sliding direction of the sliding support 30. This scale structure 12 allows for quick positioning of the sliding support 30, thereby improving the adjustment efficiency of the sliding support 30. Furthermore, in... Figures 2 to 4 As an example, the fixture base 10 is provided with an upwardly protruding guide rail 13 extending along the sliding direction of the sliding support 30. The sliding support 30 is provided with a slider 33 that slides with the guide rail 13 and a dustproof sheet 34 that covers the slider 33. The dustproof sheet 34 is used to remove debris remaining on the guide rail 13 during processing, preventing debris from causing jamming when the sliding support 30 moves. With the cooperation of the guide rail 13 and the slider 33, the sliding support 30 is ensured to move smoothly relative to the support bracket 11, so that when changing to plates 200 of different sizes, there is no need to readjust the straightness again, saving clamping and adjustment time. In addition, Figures 2 to 4 and Figures 8 to 10 As an example, the sliding support 30 is provided with a handle 38 for operator operation. The handle 38 is located on the side of the sliding support 30 opposite to the support bracket 11, which facilitates the operator's adjustment of the sliding support 30 and avoids the impact on processing caused by placing the handle 38 in other positions on the sliding support 30. It should be noted that, although Figure 2 and Figure 3 Three guide rails 13 are shown, spaced apart from each other in the direction indicated by arrow B, but the number is limited to this; correspondingly, scale structure 12 is arranged between two adjacent guide rails 13.

[0040] Combination Figures 2 to 10The working process of the quick clamping fixture of this utility model is described as follows: When clamping the plate 200, first screw the connecting bolt 50 and the support screw 60 in the outward direction, so that space is left between the pressure block 20 on the support bracket 11 and the second support part 111 for the plate 200 to be placed, and space is left between the pressure block 30 on the sliding support bracket 30 and the first support part 31 for the plate 200 to be placed; then, place the first side of the plate 200 on the second support part 111, and adjust the sliding support bracket 30 so that the second side of the plate 200 is placed on the first support part 31, and directly clamp the plate. The plate 200 is stopped by the first side stop 32 and the second side stop 112 respectively. Then, the connecting bolt 50 is screwed inward until the pressure block 20 on the support bracket 11 and the second support 111 together clamp the first side of the plate 200, and the pressure block 20 on the sliding support bracket 30 and the first support 31 together clamp the second side of the plate 200. The support screw 60 is then screwed in so that the support screw 60 corresponding to the support bracket 11 presses against the support bracket 11, and the support screw 60 corresponding to the sliding support bracket 30 presses against the sliding support bracket 30. It should be noted that the above working process is only an exemplary description and should not be used to limit the working process of the quick clamping fixture 100 of this utility model.

[0041] Compared with the prior art, since the sliding support bracket 30 is located above and slides on the fixture base 10, and the fixture base 10 is used to be mounted on the worktable of an external machine tool and is provided with a support bracket 11 that is spaced apart from the sliding support bracket 30 in the sliding direction of the sliding support bracket 30, and the pressure block 20 is respectively mounted on the support bracket 11 and the sliding support bracket 30, the clamping of the pressure block 20 on the plate 200 is no longer restricted by the T-slot of the worktable. It can be flexibly and quickly adjusted simply by sliding the sliding support bracket 30 on the fixture base 10. The distance between the sliding support 30 and the support bracket 11 is adjusted so that the plate 200 is quickly supported from below by the first support part 31 of the sliding support 30 and the second support part 111 of the support bracket 11. With the cooperation of the pressure block 20 on the sliding support 30 and the pressure block 20 on the support bracket 11, the plate 200 is quickly clamped by the first support part 31 and the pressure block 20 corresponding to the first support part 31, and the second support part 111 and the pressure block 20 corresponding to the second support part 111, thereby saving clamping time and adjustment time.

[0042] It should be further noted that the fixture base 10 has a plate-shaped structure, such as, but not limited to, a flat plate structure; furthermore, in conjunction with Figure 1This allows the T-nut and the T-slot 310 of the worktable 300 to be assembled, thereby fixing the fixture base 10 onto the worktable 300. Furthermore, the aforementioned plate 200 is only one type of workpiece; obviously, depending on actual needs, the workpiece can be of other types besides plate 200. Finally, although the attached drawing shows the support bracket 111 as a fixed structure, obviously, depending on actual needs, the support bracket 111 can also be made into a movable structure, and is not limited to what is shown in the attached drawing. When the support bracket 111 is made fixed, it can be a part of the fixture base 10, or it can be independent of the fixture base 10 and then fixed together by assembly.

[0043] The above-disclosed examples are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall fall within the scope of the present utility model.

Claims

1. A quick clamping fixture, comprising a clamping block for pressing a workpiece from above, characterized in that, The quick clamping fixture further includes a fixture base for mounting on the worktable of an external machine tool and a sliding support frame located above the fixture base and slidably mounted on the fixture base. The sliding support frame is provided with a first support portion for supporting one side of the workpiece from below. The fixture base is provided with a support bracket that is spaced apart from the sliding support frame in the sliding direction of the sliding support frame. The support bracket is provided with a second support portion for supporting the other side of the workpiece from below. The pressure block is respectively mounted on the support bracket and the sliding support frame.

2. The quick-clamping fixture according to claim 1, characterized in that, The sliding support bracket is also provided with a first side stop that is arranged perpendicularly to the first support portion and protrudes upward relative to the first support portion; the support bracket is also provided with a second side stop that is arranged perpendicularly to the second support portion and protrudes upward relative to the second support portion.

3. The quick-clamping fixture according to claim 1 or 2, characterized in that, The fixture base is provided with a scale structure that extends along the sliding direction of the sliding support frame.

4. The quick-clamping fixture according to claim 1, characterized in that, The fixture base is provided with a guide rail that protrudes upward toward the sliding support and extends along the sliding direction of the sliding support. The sliding support is provided with a slider that slides with the guide rail and a dustproof sheet that covers the slider.

5. The quick-clamping fixture according to claim 1, characterized in that, The sliding support frame is equipped with a grip handle for the operator to operate, and the grip handle is located on the side of the sliding support frame opposite to the support bracket.

6. The quick-clamping fixture according to claim 1, characterized in that, Each of the sliding support frame and the support bracket is equipped with a connecting nut, and the pressure block is provided with rotatable connecting bolts passing through it from top to bottom. The connecting bolts are threadedly connected to the connecting nuts. The height of the pressure block is adjusted accordingly by the screw-in or screw-out distance of the connecting bolts relative to the connecting nuts.

7. The quick-clamping fixture according to claim 6, characterized in that, The pressure block is provided with a pressing part, and a rotatable support screw is also provided in the pressure block from top to bottom. The support screw is threaded to the pressure block, and the support screw and the pressing part are arranged on opposite sides of each other with the connecting bolt as the center. By rotating the support screw relative to the pressure block, the support screw is lifted upward or abutted downward against the sliding support or the support bracket.

8. The quick-clamping fixture according to claim 7, characterized in that, The pressure block has two spaced-apart lugs. The pressing part is placed between the two lugs and protrudes downward from the lugs. A shaft passes through the pressing part and the two lugs in a spaced-apart direction. The shaft is also assembled and connected to the two lugs. The pressing part can also rotate around the shaft. The pressing part is a ring structure with a hardness less than that of the workpiece.

9. The quick-clamping fixture according to claim 7, characterized in that, The sliding support and the support bracket are each elongated strips perpendicular to the sliding direction of the sliding support in the horizontal direction; the sliding support has an embedded assembly groove extending along its length and penetrating its side and top surfaces, and the support bracket has an embedded assembly groove extending along its length and penetrating its side and top surfaces, and the connecting nut is embedded in the embedded assembly groove.

10. The quick-clamping fixture according to claim 9, characterized in that, The sliding support bracket has multiple pressure blocks arranged at intervals along its length. Each pressure block on the sliding support bracket corresponds to one connecting nut, one connecting bolt, and one support screw. The support bracket has multiple pressure blocks arranged at intervals along its length. Each pressure block on the support bracket corresponds to one connecting nut, one connecting bolt, and one support screw. The embedded assembly groove is a T-shaped groove, and the connecting nut is T-shaped.

Images