A rod material batch clamping tool

Abstract

The utility model relates to tooling jig technical field, especially a kind of rod material batch clamping tool, including support piece, fastener and clamping block, wherein, support piece is cuboid structure, and at least through its one side surface tristylous column shape load section is equipped in middle part, and top is equipped with through-hole, for fastener stem portion passes through and goes into load section, clamping block is different specifications trapezoidal clamping block, different diameter, different quantity of rod material batch clamping can be adapted;In addition, further improve tooling clamping stability also can be matched with the limiting hole of flush piece and clamping block. The rod material batch clamping tool can be adapted to the batch clamping of any number of precision rod materials of 0.03~3 mm, and guarantees the original straightness of rod material, quickly realizes rod material end flat, significantly improves clamping efficiency and accuracy, meets engineering mass production demand.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, and in particular to a tooling for batch clamping of rod materials. Background Technology

[0002] In the field of precision rod-shaped material processing, the efficiency and precision of batch clamping directly determine the feasibility of engineering mass production and are crucial core requirements in the production process. Current technologies for clamping precision rod-shaped materials often employ the design of grooves or specific clamping areas within tooling structures. These structures enable the placement and clamping of the rod material. However, this design has significant limitations: the clamping quantity is entirely determined by the number of grooves or clamping structures, making it impossible to flexibly adjust the clamping quantity according to actual production needs. This results in extremely low batch clamping efficiency, making it difficult to meet the processing requirements of large-scale engineering mass production.

[0003] Meanwhile, existing technologies also include some jigs and tooling specifically designed for batch clamping of rod materials. However, these toolings generally suffer from poor versatility and insufficient precision. Most tooling can only accommodate rod materials of specific specifications and with relatively large diameters. When faced with precision rod materials with smaller diameters, not only is stable clamping impossible, but clamping efficiency and accuracy also drop significantly. In particular, existing tooling faces a significant challenge in ensuring the flatness of the end faces and the overall straightness of the batch of rod materials, and these two indicators are key factors affecting the machining accuracy of the rod material end faces.

[0004] Furthermore, existing clamping fixtures cannot effectively position the tail end of precision rod-shaped materials to ensure their alignment when placing them, and it is also difficult to control the overall straightness of the materials, which further restricts the improvement of the processing quality of precision rod materials.

[0005] Regarding the issue of batch clamping of precision rods, existing technologies have attempted to address this problem through relevant patents. For example, Chinese Patent CN214080574U, published on August 31, 2021, discloses a fixture capable of batch clamping cylindrical workpieces. This fixture includes a first clamping block and a second clamping block, which are distributed front to back and form a mutually cooperating semi-circular ring structure. They are opened and closed by hinges and screws to achieve the purpose of batch clamping of cylindrical workpieces. This fixture is mainly suitable for products with low grinding precision requirements. Although it can achieve batch clamping and processing, it has obvious defects when dealing with precision small-sized cylindrical materials: the loading process requires the rod to be placed vertically into the circular clamping area of ​​the fixture, but precision small-sized rods are difficult to arrange neatly in this way due to their small diameter and low rigidity. At the same time, the quality of material placement and the tightness of clamping directly affect the straightness of the rod after clamping, which cannot meet the stringent straightness requirements of precision machining.

[0006] Chinese patent CN108044356A discloses a grinding machine fixture capable of batch clamping. This fixture places clamping components side-by-side on the grinding machine's magnetic plate and uses arc-shaped clamping jaws within the clamping block's mounting opening to transform point contact into surface contact. This adapts to both conical and cylindrical workpieces and ensures clamping stability, enabling the batch clamping of multiple cylindrical rods. However, this fixture exhibits significant shortcomings when handling precision rods with dimensions less than 1 mm: firstly, the clamping blocks themselves are extremely difficult to manufacture, making high-precision manufacturing challenging; secondly, as the rod dimensions become thinner, clamping efficiency decreases dramatically, and clamping tightness is difficult to guarantee, failing to meet the batch clamping requirements for precision rods.

[0007] In summary, existing precision rod batch clamping fixtures have always suffered from the inability to balance clamping accuracy and clamping efficiency. At the same time, existing fixtures generally lack versatility, cannot be adapted to different specifications of precision rods, and are even less able to flexibly adjust the clamping quantity according to production needs, nor can they reliably achieve flush positioning of the rod ends.

[0008] Therefore, how to provide a universal high-precision clamping fixture for support rods that can efficiently and neatly clamp any size and quantity of precision support rods in batches and achieve flush positioning of the ends of such materials remains a technical problem that urgently needs to be solved in this field. Utility Model Content

[0009] To address the technical problem of how to provide a universal, high-precision clamping fixture for efficiently and neatly clamping any size and quantity of precision rods in batches, this utility model provides a rod batch clamping fixture, including a support component, fasteners, and clamping blocks; The support member is a cuboid structure with a hollowed-out material-carrying section in the middle and a through hole at the top; The material-carrying part has a triangular prism structure, with the apex of the triangular cross-section facing the bottom surface of the support member; The loading direction of the material-carrying part is consistent with the length direction of the support member; The through hole connects the material-carrying part with the external space of the support member; The fastener includes a head and a rod; The head radius is greater than the rod radius and the through hole radius; The length of the rod is greater than the vertical distance from the top of the material-carrying part to the top surface of the support member, and it can pass through the through hole into the material-carrying part; The clamping block is an isosceles trapezoidal prism structure, with one side of the top edge of the trapezoidal cross-section being one side of the bottom surface of the clamping block. The dimensions of the two base angles of the trapezoid are the same as the dimensions of the two base angles of the triangle cross-section of the material-carrying part, and the dimension of the base is not greater than the dimension of the base of the triangle cross-section of the material-carrying part. The clamping block can be placed into the loading section of the loaded rod, with its top surface abutting against the bottom surface of the rod, and its bottom surface contacting the rod and squeezing and fixing it.

[0010] In one embodiment, the depth of the material-carrying portion is 100% of the length of the support member, and extends through both the front and rear surfaces of the support member.

[0011] In one embodiment, the cross-sectional triangle of the material-carrying section is an equilateral triangle with a side length of 24 mm.

[0012] Furthermore, the trapezoidal base dimension of the clamping block cross-section is 14 mm, 15 mm, or 16 mm; the thickness of the clamping block is 2.9 mm; and the length of the clamping block is not less than 80% of the depth of the material-carrying part.

[0013] In one embodiment, the radius of the rod is equal to the radius of the through hole; the inner wall of the through hole is provided with an internal thread, and the rod is provided with an external thread that matches the internal thread.

[0014] In one embodiment, there are at least two through holes and fasteners; the through holes are distributed along the length of the support member.

[0015] Furthermore, it also includes a flushing component; the flushing component is a long plate structure, located between the head and the top surface of the support member, with a thickness of 4 mm.

[0016] Furthermore, one end of the flush member is provided with an opening, the width of which is greater than the diameter of the rod and less than the diameter of the head; there are at least two openings, and the distance between two adjacent openings is equal to the distance between two adjacent through holes.

[0017] Furthermore, the top of the clamping block is provided with at least two limiting holes; the radius of any one of the limiting holes is equal to the radius of the rod; the distance between two adjacent limiting holes is equal to the distance between two adjacent through holes.

[0018] In one embodiment, the support member is also provided with a handle on its side.

[0019] In summary, compared with the prior art, the utility model has the following beneficial effects: The tooling for batch clamping of rods provided by this utility model adopts a triangular prism-shaped material-carrying part, which can flexibly accommodate any number of precision rods with diameters ranging from 0.03 to 3 mm without the need for preset fixed clamping positions. It is equipped with trapezoidal clamping blocks of various specifications to adapt to the batch clamping of rods with different diameters and quantities. The clamping blocks are first pressed by fasteners, and then the rods are indirectly clamped by pressing. This not only avoids clamping failure of thin rods, but also prevents pressure concentration from damaging the rods, and ensures the original straightness of the rods.

[0020] The triangular prism-shaped material carrier is designed with two through-sides or one through-sides. The one through-side design can initially limit the tail end of the rod material through the solid part at the rear end of the support member, while the through-side design can accommodate rod materials of longer specifications. Relying on the external reference surface, the end face can be uniformly and quickly aligned, and the alignment effect of the rod material ends can be visualized, which significantly improves the clamping efficiency and meets the needs of engineering mass production.

[0021] In addition, the fastener adopts a threaded fastening structure to precisely control the stroke depth of the rod, ensuring that it stably abuts against the clamping block, evenly transmitting the compressive force, and preventing the rod from slipping. In particular, the top of the clamping block is also provided with a limiting hole that matches the rod of the fastener, which can effectively prevent the rod from shifting under pressure and further improve the clamping accuracy. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the main structure of the rod material batch clamping fixture provided in Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the three-dimensional structure of the rod material batch clamping fixture provided in Embodiment 1 of this utility model; Figure 3 This is an exploded view of the tooling for batch clamping of rod materials provided in Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the three-dimensional structure of the rod material batch clamping fixture provided in Embodiment 1 of this utility model; Figure 5 This is an exploded view of the tooling for batch clamping of rod materials provided in Embodiment 1 of this utility model; Figure 6 This is a cross-sectional view of the tooling for batch clamping of rod materials provided in Embodiment 1 of this utility model.

[0024] Figure label: 100-Support component; 110-Carrying part; 120-Through hole; 130-Handle; 200-Fastener; 210-Head; 220-Rod part; 300-Clamping block; 310-Limiting hole; 400-Flush part; 410-Opening part. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top", "bottom", "front", "rear", "middle", "upper", "one side", "both sides", "one end", "front end", "rear end", "external", "internal", "axial direction", "length direction", "material loading direction", "vertical direction", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Example 1 This embodiment provides a tooling for batch clamping of rod materials, which can be used for batch clamping of precision rod materials with diameters of 0.03~3 mm, such as... Figure 1 As shown, it includes a support member 100, a fastener 200, and a clamping block 300; The support member 100 is a cuboid structure, preferably with a length of 60 mm, such as... Figure 2 As shown, the material-carrying part 110 is hollowed out in the middle to form a triangular prism structure. The cross-section of the material-carrying part 110 is an equilateral triangle with a side length of 24 mm. The apex of the triangle faces the bottom surface of the support member 100. The material-carrying direction is consistent with the length direction of the support member 100. The depth is 50 mm and it penetrates the front surface of the support member 100. When in use, the closed side can initially limit and align the tail end of the rod, reducing the positioning steps before clamping.

[0028] like Figure 3 As shown, the top of the support member 100 has two through holes 120 with a spacing of 25 mm along the length direction, which connect the material loading part 110 with the external space of the support member 100. Preferably, the radius of the through holes 120 is 3 mm and the inner wall is provided with internal threads.

[0029] The fastener 200 includes a head 210 and a rod 220. The radius of the head 210 is larger than that of the rod 220 and the through hole 120, which serves as a limiting function for installation. Preferably, the radius of the head 210 is 6 mm, and the radius of the rod 220 is 3 mm and the length is 24 mm, so that it can pass through the through hole 120 and penetrate into the material-carrying part 110 during use. The outer wall of the rod 220 is provided with an external thread that matches the internal thread of the through hole 120.

[0030] The clamping block 300 is an isosceles trapezoidal prism structure. The two base angles of the trapezoidal cross section are both 60°, which are consistent with the base angles of the equilateral triangle of the cross section of the material loading part 110. In this embodiment, the base dimension of the trapezoidal cross section is 14 mm, which is smaller than the base dimension of the triangle of the cross section of the material loading part 110, which is 24 mm. The top dimension is 10.5 mm, the thickness is 2.9 mm, and the length is 50 mm. When in use, the clamping block 300 of the above dimensions can fit tightly against the inner wall of the material loading section 110, which is suitable for the extrusion and fixing requirements of small batches of fine-sized rod materials and avoids pressure concentration.

[0031] The method of using the batch clamping fixture for rods provided in this embodiment is as follows: First, place the precision rods to be clamped parallel into the loading part 110, with the tail end of the rod close to the rear solid part of the support member 100. Then, place the clamping block 300 into the loading part 110, with its bottom surface in contact with the top surface of the rod. Subsequently, insert the rod part 220 of the fastener 200 into the through hole 120 and rotate the rod part 220 until the bottom surface of the rod part 220 abuts against the top surface of the clamping block 300. The clamping block 300 then achieves stable compression and fixation of the rod.

[0032] Example 2 This embodiment provides a tooling for batch clamping of rod materials, such as... Figure 4 As shown, the difference from Embodiment 1 of this utility model is that: The material-carrying part 110 has a depth of 60 mm and penetrates the front and rear surfaces of the support member 100. The clamping block 300 has a length of 60 mm. In use, the through-through design described above can accommodate rods of more lengths. The rod is quickly inserted from one end of the support member 100, and then the handle 130 on the side of the support member 100 is held to stand the entire fixture upright. The end face of the rod is then aligned with the external reference surface, such as a workbench. like Figure 5 , 6 As shown, it also includes a flat member 400 with a long plate structure, which is 4 mm thick and has two openings 410 with a spacing of 25 mm at one end. The width of the openings 410 is 7 mm. In use, according to the actual loading of the rod, select an appropriate number of flushing parts 400 and stack them sequentially on the top surface of the support 100 so that the openings 410 are respectively inserted into the rods 220. When the head 210 is rotated, the fasteners 200 are pushed into the loading part 110 until the bottom surface of the head 210 contacts the top surface of the flushing parts 400. At this time, the rods 220 also just abut against the clamping block 300. By limiting the height of the flushing parts 400, the tightening stroke of different fasteners 200 can be ensured to be consistent, thereby improving the uniformity of the external pressure applied to the clamping block 300 and the loaded rods.

[0033] The top of the clamping block 300 is also provided with two limiting holes 310 along the length direction. The radius of the limiting hole 310 is 3 mm, which is equal to the radius of the rod 220. The distance between two adjacent limiting holes is 25 mm, which is the same as the distance between adjacent through holes 120. Preferably, the depth of the limiting hole 310 is 1.5 mm, which does not penetrate the clamping block 300. It can position the rod 220 when it abuts against the clamping block 300, prevent the rod 220 from shifting due to pressure, ensure that a large batch of precision rods are stably fixed and avoid slippage.

[0034] Although this document frequently uses terms such as support, loading part, through hole, fastener, head, rod, clamping block, limiting hole, flush part, opening, handle, cuboid structure, triangular prism structure, isosceles trapezoidal prism structure, equilateral triangle, cross section, top surface, bottom surface, front surface, rear surface, length dimension, depth, radius, diameter, spacing, thickness, base dimension, top dimension, loading direction, vertical distance, internal thread, external thread, precision rod material, threaded fastening structure, and external reference surface, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A bar stock batch clamping fixture, characterized by: Includes support (100), fastener (200) and clamp (300); The support member (100) is a cuboid structure with a hollowed-out material-carrying part (110) in the middle and a through hole (120) at the top. The material-carrying part (110) has a triangular prism structure, with the apex of the triangular cross-section facing the bottom surface of the support member (100); The loading direction of the loading part (110) is consistent with the length direction of the support member (100); The through hole (120) connects the material-carrying part (110) with the external space of the support member (100); The fastener (200) includes a head (210) and a shank (220). The radius of the head (210) is greater than the radius of the rod (220) and the radius of the through hole (120); The length of the rod (220) is greater than the vertical distance from the top of the material-carrying part (110) to the top surface of the support member (100), and it can pass through the through hole (120) into the material-carrying part (110); The clamping block (300) is an isosceles trapezoidal prism structure. One side of the top edge of the trapezoid is one side of the bottom surface of the clamping block (300). The dimensions of the two base angles of the trapezoid are the same as the dimensions of the two base angles of the triangle of the material-carrying part (110), and the dimensions of the base are not greater than the dimensions of the base of the triangle of the material-carrying part (110). The clamping block (300) can be placed into the loading part (110) that has been loaded with rod material, and its top surface is abutted by the bottom surface of the rod part (220), and the bottom surface contacts the rod material and compresses and fixes the rod material.

2. The bar stock batch clamping fixture of claim 1, wherein: The depth of the material-carrying part (110) is 100% of the length of the support member (100), and it extends through the front and rear sides of the support member (100).

3. The quantity collet chuck of claim 1, wherein: The cross-sectional triangle of the material-carrying part (110) is an equilateral triangle with a side length of 24 mm.

4. The quantity collet tooling for a rod stock according to claim 3, wherein: The trapezoidal base dimension of the clamping block (300) is 14 mm, 15 mm, or 16 mm; the thickness of the clamping block (300) is 2.9 mm; and the length of the clamping block (300) is not less than 80% of the depth of the material-carrying part (110).

5. The tooling for batch clamping of rod materials according to claim 1, characterized in that: The radius of the rod (220) is equal to the radius of the through hole (120); The inner wall of the through hole (120) is provided with an internal thread, and the rod (220) is provided with an external thread that matches the internal thread.

6. The tooling for batch clamping of rod materials according to claim 1, characterized in that: There are at least two through holes (120) and fasteners (200); The through holes (120) are distributed along the length of the support (100).

7. The tooling for batch clamping of rod materials according to claim 6, characterized in that: It also includes flush fittings (400); The flush member (400) is a long plate structure, located between the head (210) and the top surface of the support member (100), with a thickness of 4 mm.

8. The tooling for batch clamping of rod materials according to claim 7, characterized in that: The flush member (400) has an opening (410) at one end, the width of which is greater than the diameter of the rod (220) and smaller than the diameter of the head (210); There are at least two openings (410), and the distance between two adjacent openings (410) is equal to the distance between two adjacent through holes (220).

9. The tooling for batch clamping of rod materials according to claim 6, characterized in that: The top of the clamp (300) is provided with at least two limiting holes (310); The radius of any of the limiting holes (310) is equal to the radius of the rod portion (220); The distance between two adjacent limiting holes (310) is equal to the distance between two adjacent through holes (220).

10. The tooling for batch clamping of rod materials according to claim 1, characterized in that: The support member (100) is also provided with a handle (130) on its side.

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