Positioning clamp for metal plate machining
By designing a metal plate fixture that includes a symmetrical limit seat and a dual limit mechanism, the problem of pressure plate displacement during the processing of existing fixtures is solved, the stability and processing accuracy of the metal plate are improved, and surface scratches are avoided.
Patent Information
- Application Number
- CN202421392267.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-06-18
AI Technical Summary
The existing metal plate fixtures have simple structure, which leads to the easy displacement of the pressure plate during processing, resulting in shaking and dislocation of the metal plate, affecting the processing accuracy, and easily scratching the surface of the metal plate.
A positioning fixture is designed that includes two symmetrically distributed limit seats. The limit seat is composed of a base, an L-shaped limit plate and a limit rod. Through the combination of a threaded cylinder and a threaded column, the double limit of the L-shaped limit plate is achieved to prevent displacement, and a contact plate made of rubber material is used to contact the metal plate to avoid scratches.
It effectively prevents the displacement of the L-shaped limiting plate, ensures the stability and processing accuracy of the metal sheet, and avoids scratches on the surface of the metal sheet, improving the quality of the metal sheet.
Smart Images
Figure CN222643860U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of metal plate positioning fixtures, in particular to a positioning fixture for metal plate processing. Background Art
[0002] Metal sheets are thin metal plates made by cutting, stamping, bending and other processes, including but not limited to aluminum plates, steel plates, copper plates, stainless steel plates, etc. They have the characteristics of high strength and toughness, electrical conductivity and thermal conductivity, corrosion resistance and weather resistance, and are widely used in industries, construction, automobiles, electronics, packaging and transportation, decoration and furniture, etc. A fixture is a device used to fix the processing object and ensure its correct position during the mechanical manufacturing process. When processing metal sheets, a fixture is needed to fix the metal sheet on the operating table for processing.
[0003] However, since the existing metal sheet clamp structure is relatively simple, most of them use a screw rod to adjust the position of the pressure plate, so that the pressure plate can press metal sheets of different thicknesses on the operating table to limit the position. However, when processing the clamped metal sheet, the reaction force of the metal sheet can easily drive the screw rod to rotate, causing the pressure plate to shift with the rotation of the screw rod, resulting in a gap between the pressure plate and the metal sheet, causing the metal sheet to shake between the pressure plate and the operating table, affecting the processing accuracy of the metal sheet, and using a pressure plate to press the metal plate on the operating table will also cause friction between the pressure plate and the surface of the metal sheet, which can easily scratch the surface of the metal sheet and affect the quality of the metal sheet. Therefore, those skilled in the art provide a positioning fixture for metal sheet processing to solve the problems raised in the above background technology. Utility Model Content
[0004] The purpose of the utility model is to provide a positioning fixture for metal plate processing to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A positioning fixture for metal plate processing, comprising: two symmetrically distributed limit seats, the limit seat is composed of a base, an L-shaped limit plate and a limit rod, wherein a vertical plate is arranged on the top of the base, the L-shaped limit plate is sleeved on the outside of the vertical plate, the limit rod comprises a threaded barrel and a threaded column, the threaded column is threadedly installed inside the threaded barrel, and two upper and lower supporting ears are arranged at both ends of the back of the L-shaped limit plate, the threaded column is threadedly installed inside the supporting ear located below and extends to the bottom thereof and is threadedly installed on the top of the base, and the threaded barrel is threadedly installed inside the supporting ear. It is installed inside the upper support ear and extends to the bottom thereof and is sleeved on the outside of the threaded column, and a limiting end plate is provided at one end of the threaded tube located above the support ear, and the limiting end plate is tightly attached to the upper end surface of the support ear located above, and a first groove is provided on the upper end surface of the base located on the inner side of the L-shaped limiting plate, and a second groove is provided on the lower end surface of the L-shaped limiting plate at a position corresponding to the first groove, and contact plates are provided inside the first groove and the second groove, and parts of the two contact plates extend out of the first groove and the second groove respectively to fit the end surface of the metal plate.
[0007] Preferably, a first threaded hole is provided inside the lower support ear, a threaded groove is provided on the upper end surface of the base at a position corresponding to the first threaded hole, and a threaded column is threadedly installed inside the first threaded hole, extends to the bottom of the support ear, and is threadedly installed inside the threaded groove.
[0008] Preferably, a second threaded hole is opened inside the upper support ear, the threaded barrel is threadedly installed inside the second threaded hole and extends to below it, and the inner diameter of the second threaded hole is larger than the diameter of the threaded column and smaller than the diameter of the limiting end plate.
[0009] Preferably, a limit nut is provided on the portion of the outer wall of the threaded barrel between the two support ears, the limit nut is threadedly installed on the outer wall of the threaded barrel and tightly attached to the lower end surface of the support ear located above, and the internal thread of the limit nut is in the opposite direction to the internal thread of the second threaded hole.
[0010] Preferably, a threaded inner cavity is provided inside the threaded barrel, and the threaded column is threadably installed inside the threaded inner cavity.
[0011] Preferably, a hollow groove is provided at the bottom of the L-shaped limiting plate, and the L-shaped limiting plate is sleeved on the outside of the vertical plate through the hollow groove.
[0012] Preferably, recessed holes are provided at the four corners of the two contact plates, and limiting bolts are arranged inside the recessed holes. The limiting bolts pass through the contact plates and are threadedly installed inside the base and the L-shaped limiting plate respectively, and the end faces of the limiting bolts are lower than the horizontal planes of the openings of the first groove and the second groove.
[0013] Compared with the prior art, the advantages of the utility model are:
[0014] By setting two symmetrically distributed limit seats, when limiting the position of the metal plate, the two limit seats can be installed on the operating table so that the upper end surface of the base is flush with the upper end surface of the operating table, and then the metal plate is placed between the two limit seats and fits against the inner sides of the two L-shaped limit plates. The metal plate is clamped by the two L-shaped limit plates, and then the threaded column on the lower support ear is screwed and the threaded column is installed in the threaded groove on the base to preliminarily limit the position of the L-shaped limit plate. Then the threaded barrel on the upper support ear is screwed and the threaded barrel is threadedly installed on the outer wall of the threaded barrel and pressed against the upper end surface of the lower support ear to prevent the lower support ear from moving on the outer wall of the threaded barrel. At the same time, the limit end plate installed on the top of the threaded barrel is pressed against the upper end surface of the upper support ear. , and limit the position of the L-shaped limit plate for the second time, and finally, turn the limit nut on the outer wall of the threaded barrel to make the limit nut close to the lower end face of the support ear located above and tighten the threaded barrel to limit the position of the threaded barrel and prevent the threaded barrel from loosening, thereby completing the limitation of the metal sheet. The L-shaped limit plate can be doubly limited to prevent the L-shaped limit plate from moving, and avoids the situation in which the metal sheet is shaken and misaligned due to the displacement of the L-shaped limit plate during processing, affecting its processing accuracy, thereby ensuring the stability of the metal sheet installation and its processing accuracy, and when the metal sheet is pressed on the operating table, the rubber contact plate installed on the lower end face of the L-shaped limit plate and the upper end face of the base can contact the metal sheet, so that the surface of the metal sheet will not be scratched, thereby ensuring the quality of the metal sheet. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional schematic diagram of a positioning fixture according to an embodiment of the utility model;
[0016] Figure 2 It is a three-dimensional schematic diagram of a base according to an embodiment of the utility model;
[0017] Figure 3 This is a bottom schematic diagram of an L-shaped limiting plate according to an embodiment of the utility model;
[0018] Figure 4 It is a three-dimensional schematic diagram of a limiting rod according to an embodiment of the utility model.
[0019] In the figure: 1. limit seat; 2. base; 201. first groove; 202. threaded groove; 21. vertical plate; 3. L-shaped limit plate; 301. empty groove; 302. second groove; 31. support ear; 311. first threaded hole; 312. second threaded hole; 4. limit rod; 41. threaded cylinder; 411. threaded inner cavity; 42. threaded column; 43. limit end plate; 44. limit nut; 5. contact plate; 501. recessed hole; 51. limit bolt. DETAILED DESCRIPTION
[0020] In the description of the present utility model, it should be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more. In addition, the term "including" and any variation thereof are intended to cover non-exclusive inclusions.
[0021] Combination Figure 1-Figure 4 As shown, a positioning fixture for metal sheet processing includes: two symmetrically distributed limit seats 1, the limit seat 1 is assembled by a base 2, an L-shaped limit plate 3 and a limit rod 4, wherein a vertical plate 21 is arranged on the top of the base 2, the L-shaped limit plate 3 is sleeved on the outside of the vertical plate 21, the limit rod 4 includes a threaded barrel 41 and a threaded column 42, the threaded column 42 is threadedly installed in the inside of the threaded barrel 41, and two upper and lower distributed support ears 31 are arranged at both ends of the back of the L-shaped limit plate 3, the threaded column 42 is threadedly installed in the inside of the support ear 31 located below and extends to the bottom thereof and is threadedly installed on the top of the base 2, and the threaded barrel 41 is threadedly installed at the The interior of the upper support ear 31 extends to the bottom thereof and is sleeved on the outside of the threaded column 42, and a limiting end plate 43 is provided at one end of the threaded tube 41 located above the support ear 31, and the limiting end plate 43 is tightly attached to the upper end surface of the support ear 31 located above, and the upper end surface of the base 2 is located on the inner side of the L-shaped limiting plate 3 and is provided with a first groove 201, and the lower end surface of the L-shaped limiting plate 3 is provided with a second groove 302 at a position corresponding to the first groove 201, and contact plates 5 are provided inside the first groove 201 and the second groove 302, and parts of the two contact plates 5 extend out of the first groove 201 and the second groove 302 respectively to fit on the end surface of the metal plate.
[0022] In one embodiment, when limiting the position of the metal plate, the two limiting seats 1 can be installed on the operating table so that the upper end surface of the base 2 is flush with the upper end surface of the operating table, and then the metal plate is placed between the two limiting seats 1 and fits against the inner sides of the two L-shaped limiting plates 3. The metal plate is clamped by the two L-shaped limiting plates 3, and then the threaded column 42 in the first threaded hole 311 on the lower support ear 31 is screwed, and the threaded column 42 is installed in the threaded groove 202 on the base 2 to connect the base 2 and the L-shaped limiting plate 3 to preliminarily limit the position of the L-shaped limiting plate 3, and then the threaded tube 41 in the second threaded hole 312 on the upper support ear 31 is screwed, and the threaded tube 41 is threadedly installed on the outer wall of the threaded column 42 and pressed tightly against the upper side of the support ear 31 below. The end face of the threaded column 42 is used to prevent the support ear 31 located below from being displaced on the outer wall of the threaded column 42. At the same time, the limiting end plate 43 on the top of the threaded tube 41 is pressed tightly against the upper end face of the support ear 31 located above, thereby limiting the position of the L-shaped limiting plate 3 for the second time. Finally, the limiting nut 44 on the outer wall of the threaded tube 41 is screwed to allow the limiting nut 44 to be tightly attached to the lower end face of the support ear 31 located above and tighten the threaded tube 41 to limit the position of the threaded tube 41 and prevent the threaded tube 41 from loosening. In this way, the limiting of the metal plate is completed, and the L-shaped limiting plate 3 can be doubly limited to prevent the L-shaped limiting plate 3 from being displaced, thereby avoiding the situation in which the metal plate shakes and dislocates due to the displacement of the L-shaped limiting plate 3 during processing, affecting its processing accuracy, thereby ensuring the stability of the metal plate installation and its processing accuracy.
[0023] In one embodiment, when limiting the metal sheets of different thicknesses, the L-shaped limiting plate 3 can be slid on the outside of the vertical plate 21 through the empty groove 301, the height of the L-shaped limiting plate 3 can be adjusted, and the distance between the L-shaped limiting plate 3 and the base 2 can be changed, so that the metal sheets of different thicknesses can be clamped between the base 2 and the L-shaped limiting plate 3, which is suitable for limiting the metal sheets of different thicknesses.
[0024] In one embodiment, when the metal sheet is clamped between the L-shaped limiting plate 3 and the base 2, the contact plate 5 made of rubber material installed on the lower end surface of the L-shaped limiting plate 3 and the upper end surface of the base 2 can contact the metal sheet, so that the surface of the metal sheet will not be scratched, thereby ensuring the quality of the metal sheet. In addition, since the end surface of the limiting bolt 51 is lower than the horizontal plane of the opening of the first groove 201 and the second groove 302, the limiting bolt 51 is respectively located below the horizontal plane of the opening of the first groove 201 and the second groove 302, and will not contact the metal sheet, thereby avoiding the interference of the limiting bolt 51 with the metal sheet, and having strong practicality.
[0025] In one embodiment, when the contact plate 5 is used to contact the metal plate, the metal plate can press the two rubber contact plates 5 to deform, and compress the two contact plates 5 toward the inside of the first groove 201 and the second groove 302, so that the compressed contact plates 5 are tightly attached to the upper and lower ends of the metal plate, thereby preventing the rubber contact plates 5 from being misplaced, avoiding the metal plate from being offset due to the misplacement of the rubber contact plates 5, and further improving the stability of the metal plate. Moreover, after long-term use, the limit bolt 51 in the recessed hole 501 can be directly screwed to remove the contact plate 5 from the first groove 201 and the second groove 302 for replacement, thereby facilitating subsequent maintenance work.
[0026] In one embodiment, when installing the limit rod 4, the threaded column 42 can be inserted between the two support ears 31 from the second threaded hole 312 on the support ear 31 located above, and then the threaded column 42 is screwed to be threadedly installed in the first threaded hole 311 and extended below it, so that the end of the threaded column 42 located below the support ear 31 is threadedly installed in the thread groove 202, and then the threaded tube 41 is threadedly installed in the second threaded hole 312 and extended below it, so that the threaded tube 41 is threadedly installed on the outer wall of the threaded column 42 through the threaded inner cavity 411 and pressed tightly against the upper end surface of the support ear 31 located below, so as to prevent the support ear located below from being screwed. 31 is displaced on the outer wall of the threaded column 42. At the same time, the limiting end plate 43 on the top of the threaded tube 41 is pressed tightly against the upper end surface of the support ear 31 located above, thereby limiting the position of the L-shaped limiting plate 3 for the second time. Finally, the limiting nut 44 on the outer wall of the threaded tube 41 is screwed to make the limiting nut 44 tightly against the lower end surface of the support ear 31 located above and tighten the threaded tube 41 to limit the position of the threaded tube 41 and prevent the threaded tube 41 from loosening. In this way, the installation of the limiting rod 4 is completed, and the limiting rod 4 can be doubly fixed to prevent the limiting rod 4 from being displaced, thereby avoiding the displacement of the L-shaped limiting plate 3 due to the displacement of the limiting rod 4, thereby ensuring the stability of the L-shaped limiting plate 3.
[0027] The working principle of the utility model is as follows: when positioning the metal plate, the two limit seats 1 can be installed on the operating table so that the upper end surface of the base 2 is flush with the upper end surface of the operating table, and then the metal plate is placed between the two limit seats 1 and fits against the inner sides of the two L-shaped limit plates 3. The metal plate is clamped by the two L-shaped limit plates 3, and then the threaded column 42 on the lower support ear 31 is screwed, and the threaded column 42 is installed in the threaded groove 202 on the base 2 to connect the base 2 and the L-shaped limit plate 3 to preliminarily define the position of the L-shaped limit plate 3, and then the threaded tube 41 on the upper support ear 31 is screwed, and the threaded tube 41 is threadedly installed on the outer wall of the threaded column 42 and pressed against the upper end surface of the support ear 31 below to prevent the support ear 31 below from being displaced on the outer wall of the threaded column 42. At the same time, the limit The end plate 43 is pressed tightly against the upper end surface of the support ear 31 located above, and the position of the L-shaped limit plate 3 is limited for the second time. Finally, the limit nut 44 on the outer wall of the threaded tube 41 is screwed to make the limit nut 44 tightly against the lower end surface of the support ear 31 located above and tighten the threaded tube 41, limiting the position of the threaded tube 41 and preventing the threaded tube 41 from loosening, thereby completing the limitation of the metal plate. The L-shaped limit plate 3 can be doubly limited to prevent the L-shaped limit plate 3 from being displaced, avoiding the situation in which the metal plate is shaken or misaligned due to the displacement of the L-shaped limit plate 3 during processing, affecting its processing accuracy, ensuring the stability of the metal plate installation and its processing accuracy, and adopting the contact plate 5 made of rubber material installed on the lower end surface of the L-shaped limit plate 3 and the upper end surface of the base 2 to contact with the metal plate, so that the surface of the metal plate will not be scratched, thereby ensuring the quality of the metal plate.
[0028] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A positioning fixture for metal sheet processing, comprising: Two symmetrically distributed limit seats (1), characterized in that the limit seat (1) is assembled from a base (2), an L-shaped limit plate (3) and a limit rod (4), wherein a vertical plate (21) is arranged on the top of the base (2), the L-shaped limit plate (3) is sleeved on the outside of the vertical plate (21), the limit rod (4) comprises a threaded tube (41) and a threaded column (42), the threaded column (42) is threadedly installed inside the threaded tube (41), and two upper and lower distributed support ears (31) are arranged at both ends of the back of the L-shaped limit plate (3), the threaded column (42) is threadedly installed inside the support ear (31) located below and extends to the bottom thereof and is threadedly installed on the top of the base (2), and the threaded tube (41) is threadedly installed on the support ear located above The threaded cylinder (41) is provided with a limiting end plate (43) at one end above the support ear (31), and the limiting end plate (43) is tightly attached to the upper end surface of the support ear (31) located above. In addition, the upper end surface of the base (2) is provided with a first groove (201) on the inner side of the L-shaped limiting plate (3), and the lower end surface of the L-shaped limiting plate (3) is provided with a second groove (302) at a position corresponding to the first groove (201). Contact plates (5) are provided inside the first groove (201) and the second groove (302), and parts of the two contact plates (5) extend out of the first groove (201) and the second groove (302) respectively to fit on the end surface of the metal plate.
2. A positioning fixture for metal sheet processing according to claim 1, characterized in that: A first threaded hole (311) is provided inside the support ear (31) located below, a threaded groove (202) is provided at a position on the upper end surface of the base (2) corresponding to the first threaded hole (311), and the threaded column (42) is threadedly installed inside the first threaded hole (311), extends to the bottom of the support ear (31), and is threadedly installed inside the threaded groove (202).
3. A positioning fixture for metal sheet processing according to claim 1, characterized in that: A second threaded hole (312) is provided inside the upper support ear (31), and the threaded barrel (41) is threadedly installed inside the second threaded hole (312) and extends to the bottom thereof, and the inner diameter of the second threaded hole (312) is larger than the diameter of the threaded column (42) and smaller than the diameter of the limiting end plate (43).
4. A positioning fixture for metal sheet processing according to claim 3, characterized in that: A limiting nut (44) is provided on a portion of the outer wall of the threaded barrel (41) between the two support ears (31). The limiting nut (44) is threadedly mounted on the outer wall of the threaded barrel (41) and is tightly attached to the lower end surface of the support ear (31) located above. The internal thread of the limiting nut (44) is in the opposite direction to the internal thread of the second threaded hole (312).
5. The positioning fixture for metal sheet processing according to claim 1, characterized in that: The threaded barrel (41) has a threaded inner cavity (411) formed therein, and the threaded column (42) is threadably mounted inside the threaded inner cavity (411).
6. The positioning fixture for metal sheet processing according to claim 1, characterized in that: The bottom of the L-shaped limiting plate (3) is provided with an empty slot (301), and the L-shaped limiting plate (3) is sleeved on the outside of the vertical plate (21) through the empty slot (301).
7. The positioning fixture for metal sheet processing according to claim 1, characterized in that: The four corners of the two contact plates (5) are each provided with a recessed hole (501), and a limiting bolt (51) is arranged inside the recessed hole (501). The limiting bolt (51) passes through the contact plate (5) and is threadedly mounted inside the base (2) and the L-shaped limiting plate (3), respectively, and the end surface of the limiting bolt (51) is lower than the horizontal plane of the opening of the first groove (201) and the second groove (302).