Multi-combination height positioning clamp

Abstract

The utility model relates to a multi-combination height positioning fixture, which comprises positioning components respectively arranged at four corners of a mold core, each positioning component comprises a first positioning group and a second positioning group, the first positioning group is positioned below the second positioning group, the first positioning group comprises a plurality of first positioning sheets with different thicknesses, and the second positioning group comprises a plurality of second positioning sheets with different thicknesses. The first positioning group comprises a plurality of first positioning pieces with different thicknesses, when the first positioning pieces are sequentially stacked, the thicknesses of the first positioning pieces are sequentially reduced from bottom to top, every two adjacent first positioning pieces are connected through a fastener, the second positioning group comprises a plurality of second positioning pieces with different thicknesses, and the second positioning pieces are sequentially stacked on the first positioning piece at the uppermost end; a positioning rod is arranged on the first positioning piece at the uppermost end, the second positioning pieces are sequentially arranged on the positioning rod in a sleeving mode, and the upper end of the positioning rod is fixed to the mold core. By adopting the technical scheme, the utility model provides the multi-combination height positioning clamp, so that large steel parts with different shapes and sizes can be quickly and accurately clamped and positioned, and the requirement of multi-surface processing is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fixture, especially a multi-combination height positioning fixture. BACKGROUND

[0002] In the industrial manufacturing system, mold manufacturing occupies a very key position, and it is the basis for realizing product batch production and high-precision production. As an important raw material for mold manufacturing, the processing quality and efficiency of large steel parts directly affect the performance and production cycle of the mold. However, the current large steel part processing faces severe challenges in multi-surface machining. Due to the complex and diverse structure of the workpiece, technical barriers exist between designers and machinists due to poor technical communication, making clamping and positioning a bottleneck that restricts processing efficiency and quality. The end face of the mold core in the mold is not flat, and direct assembly will cause the mold core to be uneven, affecting subsequent processing.

[0003] In the traditional way, temporary shims and profiled shims are used to fix the mold core insert, but this method consumes a lot of manpower, material resources and time, causing serious waste of resources during processing and post-maintenance. Therefore, developing an efficient and universal clamp is an urgent need to solve the problem of large steel part processing. SUMMARY

[0004] The utility model discloses a multi-combination height positioning fixture, which realizes quick, accurate and stable clamping and positioning of large steel parts of various shapes and sizes, meets the demand of multi-surface machining, improves clamping efficiency and machining precision, and reduces production cost.

[0005] The utility model discloses a technical scheme of a multi-combination height positioning fixture, which comprises positioning assemblies arranged at four corners of a mold core respectively, each positioning assembly comprises a first positioning group and a second positioning group, the first positioning group is located below the second positioning group, the first positioning group comprises a plurality of first positioning sheets with different thicknesses, the thicknesses of the first positioning sheets decrease from bottom to top when the first positioning sheets are stacked in sequence, adjacent first positioning sheets are connected through fasteners, the second positioning group comprises a plurality of second positioning sheets with different thicknesses, the second positioning sheets are stacked on the uppermost first positioning sheet in sequence, a positioning rod is arranged on the uppermost first positioning sheet, and the positioning rod is fixed to the mold core through the upper end of the positioning rod.

[0006] Further, the size of each first positioning sheet also decreases from bottom to top when the first positioning sheets are stacked in sequence.

[0007] The above technical scheme is adopted, the positioning sheets of various specifications are arranged, and the positioning sheets can be combined to position the mold cores so that the mold cores are at the same height, the large steel pieces of various shapes and sizes are quickly, accurately and stably clamped and positioned, the demand of multi-surface machining is met, the clamping efficiency and machining precision are improved, and the production cost is reduced.

[0008] Further arrangement of the utility model: each second positioning sheet is equipped with multiple through holes matched with positioning rods, each through hole is evenly distributed in array, and different through holes are matched with positioning rods to adjust the relative position of the second positioning sheet and the mold core.

[0009] The above further arrangement is adopted, the structure of each mold core is different, the space reserved for the second positioning sheet by the mold core is different when installation and positioning, therefore, the position of the second positioning sheet can be adjusted through the cooperation of different through holes and positioning rods, and the universality is higher.

[0010] Further arrangement of the utility model: the middle part of the first positioning sheet at the uppermost end is provided with a first counterbore along the vertical direction thereof, the positioning rod comprises a rod body and a positioning boss, the positioning boss is located in the first counterbore, the rod body extends to the upper side of the first positioning sheet through the first counterbore, and the second positioning sheet is installed.

[0011] The above further arrangement is adopted, the positioning rod is inserted from the bottom of the first positioning sheet at the uppermost end, the end of the rod body is matched with the mold core in screw thread to realize fixation, each second positioning sheet is sequentially sleeved on the rod body and located between the mold core and the first positioning sheet at the uppermost end, and the disassembly and assembly are convenient.

[0012] Further arrangement of the utility model: each first positioning sheet is equipped with two second counterbores and two installation holes, the two second counterbores are diagonally arranged, the two installation holes are also diagonally arranged, the two second counterbores and the two installation holes are respectively located at the four corners of the first positioning sheet, and the installation holes and the second counterbores on the adjacent two first positioning sheets are correspondingly arranged.

[0013] The above further arrangement is adopted, the fastener is arranged in screw, the tip of the screw is matched with the installation hole in screw thread, and the diagonal allowance can combine single specification with multiple specifications and high fall height size positioning. ACCURATE DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model embodiment;

[0015] Figure 2 It is a schematic view of the first positioning group in the utility model embodiment;

[0016] Figure 3 It is a schematic view of the second positioning group in the utility model embodiment;

[0017] Figure 4The first positioning group of the embodiment of the utility model is shown in the exploded view;

[0018] Figure 5 The position of the second counter bore and the mounting hole of the embodiment of the utility model is shown in the schematic view;

[0019] Figure 6 The second positioning piece of the embodiment of the utility model is shown in the schematic view;

[0020] Figure 7 The positioning assembly and the die of the embodiment of the utility model are shown in the schematic view;

[0021] Figure 8 The die of the embodiment of the utility model is shown in the schematic view.

[0022] In the figure, 1, positioning assembly; 11, first positioning group; 111, first positioning piece; 112, first counter bore; 113, second counter bore; 114, mounting hole; 12, second positioning group; 121, second positioning piece; 1211, through hole; 3, fastener; 4, positioning rod; 100, die. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] It should be noted that, in the description of the utility model, all directional indications (such as up, down, front, back, etc.) are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), if the certain posture changes, the directional indications also change accordingly.

[0025] In addition, the description of "first", "second" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. In the description of the utility model, the meaning of "several" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0026] In addition, the technical solutions of each embodiment of the utility model can be combined with each other, but it must be based on the realization of the person skilled in the art, when the combination of the technical solutions appears contradictory or unachievable, it should be considered that the combination of the technical solutions does not exist, and is not within the protection scope required by the utility model.

[0027] For example, Figures 1-8As shown, a multi-combination height positioning clamp includes positioning assemblies 1 arranged at four corners of a mold core 100 respectively, each positioning assembly 1 includes a first positioning group 11 and a second positioning group 12, the first positioning group 11 is below the second positioning group 12, the first positioning group 11 includes first positioning sheets 111 of different thicknesses, the thicknesses of the first positioning sheets 111 decrease from bottom to top when the first positioning sheets 111 are stacked in sequence, adjacent two first positioning sheets 111 are connected through fasteners 3, the second positioning group 12 includes second positioning sheets 121 of different thicknesses, each second positioning sheet 121 is stacked on the uppermost first positioning sheet 111 in sequence, the uppermost first positioning sheet 111 is provided with a positioning rod 4, each second positioning sheet 121 is sleeved on the positioning rod 4 in sequence, and the upper end of the positioning rod 4 is fixed with the mold core; when the first positioning sheets 111 are stacked in sequence, the sizes of the first positioning sheets 111 also decrease from bottom to top, multiple different specifications of positioning sheets are arranged, which can be combined by themselves, the thicknesses of the first positioning sheets 111 can be set as 50mm, 30mm, 20mm, etc., the thicknesses of the second positioning sheets 121 can be set as 10mm, 5mm, 2mm, 1mm, 0.5mm, 0.2mm, 0.1mm, etc., to realize multi-combination positioning of decimal to 0.1 precision depth difference, the second positioning sheets 121 are connected in series through the positioning rod 4 to solve the spacing difference between 0.1-10mm, the lower end surfaces of each corner of the mold core are not on the same horizontal line, there is a height difference, the second positioning sheets 121 of different thicknesses can be combined to solve the height difference, so as to position the mold core, such as Figure 7 and 8 As shown, the bottom surface of the lower left corner of the mold core is lower than that of the lower right corner, the height difference is 8mm, therefore the second positioning sheets 121 on the left are less than those on the right, and the second positioning sheets 121 on the right are one more than those on the left, which are 5mm, 2mm and 1mm.

[0028] Each second positioning sheet 121 is provided with multiple through holes 1211 matched with the positioning rod 4, the through holes 1211 are evenly distributed in an array, different through holes 1211 are matched with the positioning rod 4 to adjust the relative position of the second positioning sheet 121 and the mold core, because the structures of the mold cores are different, the sizes of the spaces reserved for the second positioning sheets 121 are different when the mold core is installed and positioned, therefore the positions of the second positioning sheets 121 can be adjusted through the cooperation of different through holes 1211 and the positioning rod 4, which has higher universality, if the space accommodating the second positioning sheet 121 at the lower end surface of the mold core is small, the second positioning sheet 121 can be moved outward, the through holes 1211 on the side of the second positioning sheet 121 are matched with the positioning rod 4, if there is a space accommodating the second positioning sheet 121, the through holes 1211 in the middle can be matched with the positioning rod 4.

[0029] The middle part of the uppermost first positioning sheet 111 is provided with a first counterbore 112 along the vertical direction thereof, the positioning rod 4 comprises a rod body and a positioning boss, the positioning boss is located in the first counterbore 112, the rod body extends to the upper side of the first positioning sheet 111 through the first counterbore 112 for installing the second positioning sheet 121, the positioning rod 4 is inserted from the bottom of the uppermost first positioning sheet 111, the rod body end is fixed by thread cooperation with the die core, each second positioning sheet 121 is sequentially sleeved on the rod body and located between the die core and the uppermost first positioning sheet 111, and the assembly and disassembly are convenient. Two second counterbores 113 and two mounting holes 114 are arranged on each first positioning sheet 111, the two second counterbores 113 are diagonally arranged, the two mounting holes 114 are also diagonally arranged, the two second counterbores 113 and the two mounting holes 114 are respectively located at four corners of the first positioning sheet 111, the mounting holes 114 and the second counterbores 113 on the adjacent two first positioning sheets 111 are correspondingly arranged, the fastener 3 is provided by a screw, the screw tip end is threadedly connected with the mounting hole 114, and single multiple specifications high-fall height size positioning can be combined by diagonal accommodation.

Claims

1. A multi-assembly height positioning fixture, characterized by, The positioning assembly (1) is arranged at four corners of the mold core, each positioning assembly (1) comprises a first positioning group (11) and a second positioning group (12), the first positioning group (11) is located below the second positioning group (12), the first positioning group (11) comprises a plurality of first positioning sheets (111) with different thicknesses, the thicknesses of the first positioning sheets (111) decrease from bottom to top when the first positioning sheets (111) are stacked in sequence, the adjacent two first positioning sheets (111) are connected through the fastener (3), the second positioning group (12) comprises a plurality of second positioning sheets (121) with different thicknesses, the second positioning sheets (121) are stacked on the uppermost first positioning sheet (111) in sequence, the uppermost first positioning sheet (111) is provided with the positioning rod (4), the second positioning sheets (121) are sleeved on the positioning rod (4) in sequence, and the upper end of the positioning rod (4) is fixed with the mold core.

2. The multi-assembly height positioning fixture according to claim 1, wherein, A plurality of through holes (1211) matched with the positioning rod (4) are arranged on each second positioning sheet (121), the through holes (1211) are evenly distributed in an array, and different through holes (1211) are matched with the positioning rod (4) to adjust the relative position of the second positioning sheet (121) and the mold core.

3. The multi-assembly height positioning fixture according to claim 1 or 2, wherein, A first counterbore (112) is arranged in the vertical direction of the uppermost first positioning sheet (111), the positioning rod (4) comprises a rod body and a positioning boss, the positioning boss is located in the first counterbore (112), and the rod body extends above the first positioning sheet (111) through the first counterbore (112) to mount the second positioning sheet (121).

4. The multi-assembly height positioning jig according to claim 1 or 2, wherein Two second counterbores (113) and two mounting holes (114) are arranged on each first positioning sheet (111), the two second counterbores (113) are arranged at opposite angles, the two mounting holes (114) are also arranged at opposite angles, the two second counterbores (113) and the two mounting holes (114) are located at four corners of the first positioning sheet (111), and the mounting holes (114) and the second counterbores (113) on the adjacent two first positioning sheets (111) are arranged correspondingly.

5. The multi-assembly height positioning fixture according to claim 1 or 2, wherein, When the first positioning sheets (111) are stacked in sequence, the sizes of the first positioning sheets (111) also decrease from bottom to top.

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