Tool quick-change pressing device

Abstract

The utility model discloses a tool quick-change pressing device, which belongs to the technical field of pneumatic quick-change pressing and positioning, and comprises a machine tool platform fixedly connected with a fixed plate, a workpiece on the fixed plate and tightly attached to the fixed plate, and a plurality of screws mounted on the workpiece, and the screws penetrate through the workpiece and extend to the lower part of the workpiece; the pop-rivet is placed on the fixing plate in a pulling manner, and one end of the pop-rivet is connected with the screw; the blind rivet and the screw are arranged on the fixing plate and the workpiece respectively, when the workpiece is placed on the fixing plate, the locking piece driven by the driving piece is used for clamping and fixing the end, away from the screw, of the blind rivet, and the locking piece is used for clamping and fixing the end, away from the screw, of the blind rivet. The locking piece can quickly lock and loosen the blind rivet under the action of the driving piece, so that the workpiece can be quickly replaced, and the workpiece can be machined through the fixing mode.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic quick-change pressing and positioning, in particular to a tooling quick-change pressing device. Background Art

[0002] The fixture quick-change clamping device is an important equipment in the field of mechanical processing. It is mainly used to realize the rapid positioning and clamping of workpieces during the processing process to improve production efficiency and processing accuracy. In practical applications, the fixture quick-change clamping device is widely used in automobile manufacturing, aerospace, mold processing and other industries. In these industries, due to the wide variety of products and frequent production batches, the quick change function is particularly important. It can not only improve processing efficiency, but also ensure product quality, thereby enhancing the market competitiveness of enterprises.

[0003] However, existing precision repeatable fixing and locking devices, especially in the processing of some square workpieces, are mostly used to achieve precise fixing but cannot guarantee high-strength load-bearing capacity. In actual use, because the workpiece needs to be cut, drilled and other processing, when the processing machine processes the workpiece, different sizes of forces will be generated between the processing machine and the workpiece, and the workpiece clamp generally fixes the workpiece by clamping and squeezing, and the larger force will cause a certain deviation in the position of the clamped workpiece, thereby causing a deviation between the position of the workpiece during processing and the position of the output end of the processing machinery and equipment, which is not conducive to the processing of the workpiece. Utility Model Content

[0004] The embodiment of the utility model provides a tooling quick-change clamping device to solve the above-mentioned technical problems.

[0005] The embodiment of the utility model adopts the following technical solution: comprising a machine tool platform fixedly connected to a fixing plate, a workpiece on the fixing plate tightly fitted with the fixing plate, and also comprising a plurality of screws movably mounted on the workpiece, the screws penetrating the workpiece and extending to below the workpiece;

[0006] A pull rivet, the pull rivet is placed on the fixing plate, and one end of the pull rivet is connected to the screw;

[0007] A locking piece, one end of which is connected to an end of the rivet away from the screw, and the locking piece tightens and stabilizes the rivet through a driving piece connected to the machine tool platform.

[0008] Furthermore, the pull nail is composed of a conical block with a diameter gradually decreasing from top to bottom and a pulling rod fixedly connected to the conical block, and the conical block is threadedly connected to the screw.

[0009] Furthermore, a clamping portion is provided at one end of the pulling rod away from the conical block, and the diameter of the clamping portion is greater than the diameter of the pulling rod.

[0010] Furthermore, the locking member is composed of a plurality of elastic extrusion sheets, and a protrusion is provided on the extrusion sheet, and an extrusion channel for movably inserting the pull rod is formed between the plurality of extrusion sheets.

[0011] Furthermore, the machine tool platform is provided with a plurality of through grooves, the lower end surface of the fixed plate is provided with a limiting groove corresponding to the through groove, the locking member is movably connected in the through groove and the limiting groove, and the output end of the driving member extends into the through groove and is connected to an end of the locking member away from the pulling rod.

[0012] Furthermore, a conical groove communicating with the limiting groove is formed on the fixing plate, and the conical groove is movably engaged with the conical block.

[0013] At least one of the above technical solutions adopted in the embodiment of the utility model can achieve the following beneficial effects:

[0014] The utility model places a rivet on a fixing plate and then installs a screw on the workpiece. When the workpiece is placed on the fixing plate, the positions of the screw and the rivet correspond and the two are threadedly connected. Then a locking member driven by a driving member is used to clamp and fix the end of the rivet away from the screw. Under the action of the driving member, the locking member can quickly lock and release the rivet, so that the workpiece can be quickly replaced. The workpiece can be processed by the above-mentioned fixing method. The state of the workpiece on the fixing plate will be more stable than the workpiece under the pneumatic clamp, and the position deviation between the workpiece and the fixing plate is avoided, which is more conducive to the processing of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0019] Figure 4It is a partial structural explosion diagram of the utility model;

[0020] Figure 5 It is a schematic diagram of the fixing plate structure of the utility model.

[0021] Reference numerals:

[0022] 1. Machine tool platform; 101. Through slot; 2. Fixing plate; 201. Limiting slot; 202. Conical slot; 3. Workpiece; 4. Screw; 5. Pull rivet; 501. Conical block; 502. Clamping part; 503. Pull rod; 6. Extrusion sheet; 60. Raised part; 61. Extrusion channel; 7. Driving member; 8. Countersunk slot; 9. Recess. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding 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.

[0024] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] The embodiment of the utility model provides a tooling quick-change clamping device, including a machine tool platform 1 fixedly connected to a fixing plate 2, and a workpiece 3 on the fixing plate 2 that is tightly fitted with the fixing plate 2. The device structure is suitable for a workpiece 3 with a square appearance and a flat surface. When in use, the fixing plate 2 is fixedly connected to the machine tool platform 1, and then the workpiece 3 is placed on the fixing plate 2. Because the workpiece 3 is square and the surface in contact with the surface of the fixing plate 2 is a flat surface, the workpiece 3 will be in tight contact with the upper end surface of the fixing plate 2 when placed on the fixing plate 2, so that during subsequent processing operations, the contact state between the workpiece 3 and the fixing plate 2 is relatively stable.

[0026] The screw 4 is connected to the workpiece 3 through the countersunk slot 8. The countersunk slot 8 ensures that the end of the screw 4 will not be exposed on the surface of the workpiece 3 during processing, thereby avoiding accidental contact of the screw 4 with the output end of the processing machine. The screw 4 penetrates the workpiece 3 and extends to the bottom of the workpiece 3. A rivet 5 is placed on the fixing plate 2, and one end of the rivet 5 is connected to the screw 4. The rivet 5 is provided with a bolt hole corresponding to the screw 4. When the screw 4 is put into the countersunk slot 8, one end of the screw 4 will extend out of the countersunk slot 8 and create a certain distance between it and the lower end surface of the workpiece 3. The extended end of the screw 4 will contact the rivet 5, and when the screw 4 is turned, the end of the screw 4 extending out of the countersunk slot 8 will be screwed into the rivet 5. Before processing the workpiece 3, the screw 4 and the rivet 5 are fixedly installed on the workpiece 3 and then placed together on the fixing plate 2.

[0027] When the workpiece 3 is placed on the fixing plate 2 with the screws 4 and the rivets 5 being fixed to the fixing plate 2, the locking member 7 is used to fasten the rivets 5 to the fixing plate 2.

[0028] Among them, the rivet 5 is composed of a conical block 501 with a diameter gradually decreasing from top to bottom and a pulling rod 503 fixedly connected to the conical block 501, and the conical block 501 is threadedly connected to the screw 4, and the end of the pulling rod 503 away from the conical block 501 is provided with a clamping portion 502, and the diameter of the clamping portion 502 is larger than the diameter of the pulling rod 503. When the workpiece 3 is placed on the fixed plate 2 with the screw 4 and the rivet 5, one end of the rivet 5 will penetrate the fixed plate 2, and one end of the conical block 501 on the rivet 5 will be clamped with the fixed plate 2 and limit it, which is convenient for the quick placement of the workpiece 3.

[0029] Further, such as Figure 3-4As shown, the locking member is composed of a plurality of elastic extrusion sheets 6, and a protrusion 60 is provided on the extrusion sheet 6, and an extrusion channel 61 for movably inserting the pull rod 503 is formed between the plurality of extrusion sheets 6. When the workpiece 3 is placed on the fixing plate 2 with the screw 4 and the rivet 5, one end of the rivet 5 passes through the fixing plate 2 and then extends into the extrusion channel 61. At this time, the rivet 5 can be clamped and fixed by narrowing the range of the extrusion channel 61, and the protrusion 60 on the extrusion sheet 6 will squeeze the clamping part 502 on the rivet 5 against each other, so that the locking member is more stable when locking and fixing the rivet 5. The locking member fixes the rivet 5, and thus also fixes the screw 4 and the workpiece 3.

[0030] The machine tool platform 1 is provided with a plurality of through slots 101, and the lower end surface of the fixing plate 2 is provided with a limiting slot 201 corresponding to the through slot 101. The locking member is movably connected in the through slot 101 and the limiting slot 201. When the locking member is not in use, there is a radially outward elastic force between the plurality of extrusion sheets 6, and under the push of the driving member 7, the upper ends of the plurality of extrusion sheets 6 will be located in the limiting slot 201. Because the shape of the outer wall of the extrusion sheet 6 is a groove 9 with raised ends and sunken middle part, and its The ridge at the top of the extrusion sheet 6 is driven by the driving force of the driving member 7 and the mutual repulsion between the plurality of extrusion sheets 6, and after moving from the relatively small diameter through groove 101 to the relatively large limiting groove 201, the top positions of the plurality of extrusion sheets 6 will open radially outward until the extrusion sheet 6 abuts against the limiting groove 201, and the groove 9 on the extrusion sheet 6 abuts against the inner side of the top of the through groove 101. At this time, the extrusion channel 61 between the plurality of extrusion sheets 6 changes from the upper end to the lower end. The cone with a gradually decreasing diameter extending to the lower end and a larger diameter at the upper end is more suitable for the insertion of the clamping portion 502 on the rivet 5. The output end of the driving member 7 extends into the through slot 101 and is connected to the end of the locking member away from the pulling rod 503. The output end of the driving member 7 is more easily connected to the locking member through the through slot 101 and does not affect the operation of its output end. The driving member 7 can be a telescopic rod, or other output end has a unidirectional reciprocating power output device. When the rivet 5 is already located in the extrusion channel 61 on the locking member, the output end of the driving member 7 pulls the locking member, and the outer side walls of the upper ends of several extrusion sheets 6 are squeezed by the top side walls of the through slot 101 at the same time, so that the diameter of the upper end of the extrusion channel 61 gradually decreases until the inner side walls of several extrusion sheets 6 are in close contact with the outer side walls of the pulling rod 503, and the protrusion 60 just clamps the clamping portion 502. At this time, the rivet 5 is fixed to the locking member as a whole by the fixing column, and then the workpiece 3 is fixed as a whole by the screw 4.

[0031] Finally, if Figure 5As shown, a conical groove 202 connected with the limiting groove 201 is provided on the fixing plate 2, and the conical groove 202 is movably engaged with the conical block 501. When placing the rivet 5, since the conical block 501 on the rivet 5 is consistent in shape and size with the conical groove 202 on the fixing plate 2, the rivet 5 can be quickly placed without positional displacement, thereby achieving the purpose of quickly placing the rivet 5 and providing a good auxiliary positioning effect for improving the overall efficiency of the workpiece 3 clamping process.

[0032] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A tooling quick-change clamping device, comprising a machine tool platform (1) fixedly connected to a fixing plate (2), a workpiece (3) on the fixing plate (2) tightly fitted to the fixing plate (2), characterized in that: Also includes; A plurality of screws (4) movably mounted on the workpiece (3), wherein the screws (4) penetrate the workpiece (3) and extend to below the workpiece (3); A pull nail (5), the pull nail (5) is placed on the fixing plate (2), and one end of the pull nail (5) is connected to the screw (4); A locking member, one end of which is connected to an end of the pull nail (5) away from the screw (4), and the locking member tightens and secures the pull nail (5) through a driving member (7) connected to the machine tool platform (1).

2. The tooling quick-change clamping device according to claim 1, characterized in that: The pull stud (5) is composed of a conical block (501) whose diameter gradually decreases from top to bottom and a pulling rod (503) fixedly connected to the conical block (501), and the conical block (501) is threadedly connected to the screw (4).

3. The tooling quick-change clamping device according to claim 2, characterized in that: A clamping portion (502) is provided at one end of the pulling rod (503) away from the conical block (501), and the diameter of the clamping portion (502) is greater than the diameter of the pulling rod (503).

4. The tooling quick-change clamping device according to claim 2, characterized in that: The locking member is composed of a plurality of elastic extrusion sheets (6), and a protrusion (60) is provided on the extrusion sheet (6). An extrusion channel (61) for movably inserting the pull rod (503) is formed between the plurality of extrusion sheets (6).

5. The tooling quick-change clamping device according to claim 2, characterized in that: The machine tool platform (1) is provided with a plurality of through slots (101); a limiting slot (201) corresponding to and connected to the through slot (101) is provided on the lower end surface of the fixing plate (2); the locking member is movably connected in the through slot (101) and the limiting slot (201); the output end of the driving member (7) extends into the through slot (101) and is connected to an end of the locking member away from the pulling rod (503).

6. The tooling quick-change clamping device according to claim 5, characterized in that: The fixing plate (2) is provided with a conical groove (202) which is in communication with the limiting groove (201), and the conical groove (202) is movably engaged with the conical block (501).

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