Locating tool for flat cutting of rivet core rod
By designing a flattening positioning fixture for the core rod, and utilizing the concave arc structure of the flattening block and clamping groove, as well as the clamping device of the clamping seat, the bending deformation problem during the flattening process of the core rod was solved, achieving efficient and stable processing results.
Patent Information
- Application Number
- CN202520438910.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-13
AI Technical Summary
In the existing technology, the core rod is prone to bending and deformation due to its own weight and cutting resistance during the flattening process, which affects the straightness and symmetry, resulting in poor processing quality.
A flattening and positioning fixture for a core rod is designed, including a positioning table and a clamping seat. The positioning table is equipped with multiple sets of flattening blocks and clamping slots. The core rod is clamped by the cooperation of the flattening blocks and clamping slots. The concave arc structure is used to increase stability. Combined with the bidirectional lead screw and clamping blocks of the clamping seat, the core rod is stably positioned and cut.
It effectively solved the straightness and symmetry problems in the process of cutting the core rod flat, ensuring the consistency of processing quality, reducing labor intensity and operation difficulty, improving production efficiency and reducing costs.
Smart Images
Figure CN223819779U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of positioning tool, specifically to a kind of core rod cutting flat positioning tool of pullout. BACKGROUND
[0002] Pullout is generally composed of five subassemblies, i.e., a nail body 1, a core rod 2, a forming sleeve 3, a ring 4 and a driving nut 5, as shown in the figure. Figure 1 A flat round structure 6 is needed at the tail end of the core rod 2 to realize the product wrenching function and ensure the normal assembly of the pullout.
[0003] The flat round structure is usually obtained by linear cutting (cutting flat) at the tail end of the core rod, and when the pullout is installed, the flat round structure of the core rod is twisted to tighten the driving nut, and the riveting of the pullout is completed. When the tail end of the core rod is cut flat, a cantilever beam structure is formed by single-point clamping positioning. Since the core rod is a slender rod (length-diameter ratio ≥ 10), the cantilever span is long, and bending stress caused by its own gravity, cutting resistance and other factors can easily cause rod bending deformation, resulting in poor straightness and symmetry of the flat round structure, which affects the normal assembly of the combined parts. CONTENT OF THE UTILITY MODEL
[0004] To overcome the above-mentioned defects, the utility model aims to provide a core rod cutting flat positioning tool for pullout, which can effectively solve the straightness and symmetry problems caused by the core rod cutting flat process of the pullout and ensure the processing quality of the core rod cutting flat of the pullout.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:
[0006] A core rod cutting flat positioning tool for pullout, comprising a positioning table, a plurality of cutting flat blocks are arranged on the end face of the positioning table from top to bottom, each group of cutting flat blocks is two, the two cutting flat blocks are symmetrically arranged, and the adjacent two groups of cutting flat blocks are enclosed to form a cutting flat groove, the other end of each group of cutting flat blocks is symmetrically connected to two clamping blocks, clamping grooves are formed on the facing end faces of the two clamping blocks from top to bottom, the two clamping grooves form a group, and the two clamping grooves enclose a cavity for accommodating the core rod, and each group of clamping grooves is in communication with the cutting flat groove of the same height.
[0007] Preferably, the contact surface of the cutting flat block and the core rod is concave arc-shaped.
[0008] Preferably, the contact surface of the clamping groove and the core rod is concave arc-shaped.
[0009] Preferably, the positioning tool further comprises a clamping seat, the clamping seat comprises a fixed table, a sliding groove is formed on the fixed table, a bidirectional screw rod is rotationally connected in the sliding groove, one end of the bidirectional screw rod is rotationally connected with the inner wall of the sliding groove, the other end penetrates through the fixed table and is fixedly connected with a rotating handle, two symmetrically arranged sliding blocks are threadedly connected on the bidirectional screw rod, clamping blocks are fixedly connected to the top of the two sliding blocks, and the clamping blocks are used for clamping the two clamping blocks.
[0010] The positive beneficial effects of the utility model are as follows:
[0011] 1. The utility model provides a kind of core rod of extracting nail cutting flat positioning tool, core rod is clamped in clamping groove, cutting flat groove, tail end of core rod is supported by cutting flat block, can effectively solve the straightness, the problem of poor degree of difference generated in the process of core rod of extracting nail cutting flat, and the product obtained is qualified and good consistency, guarantee the machining quality of core rod of extracting nail cutting flat, and it is simple in structure, and it is convenient, fast to assemble and disassemble, reduce labor intensity and operation difficulty, production efficiency is high, shorten product processing cycle, production cost is low, with wide popularization. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is schematic view of extracting nail structure;
[0013] Figure 2 It is one of schematic view of the utility model extracting nail core rod cutting flat positioning tool structure;
[0014] Figure 3 It is two of schematic view of the utility model extracting nail core rod cutting flat positioning tool structure;
[0015] Figure 4 It is schematic view of structure before extracting nail core rod cutting flat;
[0016] Figure 5 It is schematic view of structure after extracting nail core rod cutting flat.
[0017] In the drawing: 1-nail body, 2-core rod, 3-molded sleeve, 4-ring, 5-driving nut, 6-flat round structure, 7-positioning table, 8-cutting flat block, 9-cutting flat groove, 10-clamping block, 11-clamping groove, 12-fixed table, 13-bidirectional screw rod, 14-rotating handle, 15-clamping block, 16-sliding groove. DETAILED DESCRIPTION
[0018] The utility model is further described below in combination with some specific embodiments.
[0019] Example 1
[0020] Reference Figure 2The application discloses a core rod cutting and flattening positioning tool, which comprises a positioning table 7, a plurality of sets of cutting and flattening blocks 8 are arranged on the end face of the positioning table 7 from top to bottom, each set of cutting and flattening blocks comprises two cutting and flattening blocks, the two cutting and flattening blocks are symmetrically arranged, cutting and flattening grooves 9 are formed between the upper and lower two sets of cutting and flattening blocks 8, the other end of each set of cutting and flattening blocks 8 is symmetrically connected with two clamping blocks 10, one side cutting and flattening blocks of each set of cutting and flattening blocks 8 are fixedly connected with one clamping block, the other side cutting and flattening blocks of each set of cutting and flattening blocks 8 are fixedly connected with the other clamping block, clamping grooves 11 are formed in the facing end faces of the two clamping blocks 10, the two clamping grooves form a set, the two clamping grooves are arranged on the facing end faces of the two clamping blocks 10 respectively, the two clamping grooves are symmetrically arranged, and the two facing clamping grooves form a cavity for accommodating the core rod 2; each set of clamping grooves 11 is in communication with the cutting and flattening grooves 9 of the same height.
[0021] Further, the contact surface of the cutting and flattening block 8 and the core rod 2 is a concave arc, the bottom end face of the cutting and flattening block located at the upper end of the positioning table, the upper end face of the cutting and flattening block located at the lower end of the positioning table and the upper and lower end faces of the cutting and flattening block located at the middle of the positioning table are all arranged in a concave arc structure matched with the core rod, so that the contact area of the cutting and flattening block and the core rod is increased, and stable contact of the cutting and flattening block and the core rod is ensured.
[0022] Further, the contact surface of the clamping groove 11 and the core rod 2 is a concave arc, the two clamping grooves 11 symmetrically arranged on the two clamping blocks 10 form a cavity for accommodating the core rod 2, and the clamping groove 11 tightly clamps the core rod.
[0023] Further, the positioning tool further comprises a clamping seat, as shown in Figure 3 The clamping seat comprises a fixed table 12, a sliding groove 16 is formed in the fixed table 12, a bidirectional screw rod 13 is rotationally connected in the sliding groove 16, one end of the bidirectional screw rod 13 is rotationally connected with the inner wall of the sliding groove, the other end of the bidirectional screw rod 13 penetrates through the fixed table 12 and is fixedly connected with a rotating handle 14, two symmetrically arranged sliding blocks are threadedly connected on the bidirectional screw rod 13, the two sliding blocks move towards or away from each other, the moving directions of the two sliding blocks are opposite, the top of each of the two sliding blocks is fixedly connected with a clamping block 15, and the clamping block 15 is used for clamping the two clamping blocks 10.
[0024] The utility model discloses a core rod cutting and flattening positioning tool using method: first, the core rod 2 is placed into two clamping blocks 10 clamping groove 11 (multiple sets of clamping grooves can place into the core rod simultaneously), until the core rod 2 tail end face and the positioning table 7 are pasted, and the core rod tail end is located in the cutting and flattening groove 9, is supported by the cutting and flattening block 8, second, the clamping block 10 (containing the core rod) is positioned on the clamping seat by flat-nose pliers clamping, rotates the rotating handle 14, and two sliding blocks move towards each other, and the clamping block 15 clamps the clamping block 10, and the clamping block 10 clamps the core rod 2, then, according to the reference of the cutting equipment setting, along the cutting and flattening groove 9 to the part of the core rod 2 protruding the cutting and flattening groove 9 is removed by line cutting, finally, loosen the clamping block 15, and take out the core rod 2 from the clamping groove 11, complete the core rod cutting and flattening, and the core rod cutting and flattening before and after respectively refer to Figure 4 and Figure 5 .
[0025] Finally, it is explained that the above embodiment is only used to illustrate the technical scheme of the utility model and is not limited, and other modifications or equivalent replacements of the technical scheme of the utility model by the ordinary skill in the art should be covered in the claim range of the utility model, as long as it does not deviate from the spirit and scope of the technical scheme of the utility model.
Claims
1. A tooling for flattening and positioning a pin-pulling core rod, characterized in that, The system includes a positioning platform (7), on which multiple sets of cutting blocks (8) are arranged from top to bottom on the end face of the positioning platform (7). Each set of cutting blocks consists of two blocks, which are arranged symmetrically. The two sets of cutting blocks (8) together form a cutting groove (9). The other end of each set of cutting blocks is symmetrically connected to two clamping blocks (10). The two clamping blocks (10) have clamping grooves (11) on their opposite end faces from top to bottom. The two clamping grooves (11) form a set, and the two clamping grooves together form a cavity for accommodating the core rod. Each set of clamping grooves (11) is connected to the cutting groove (9) at the same height.
2. The pin-pulling core rod flattening and positioning fixture according to claim 1, characterized in that, The contact surface between the flattened block (8) and the core rod is concave arc-shaped.
3. The pin-pulling core rod flattening and positioning fixture according to claim 2, characterized in that, The contact surface between the clamping groove (11) and the core rod is concave arc-shaped.
4. The pin-pulling core rod flattening and positioning fixture according to any one of claims 1 to 3, characterized in that, The positioning fixture also includes a clamping seat, which includes a fixed platform (12). A slide groove (16) is provided on the fixed platform (12). A bidirectional lead screw (13) is rotatably connected in the slide groove (16). One end of the bidirectional lead screw (13) is rotatably connected to the inner wall of the slide groove, and the other end passes through the fixed platform and is fixedly connected to the rotating handle (14). Two symmetrically arranged sliders are threaded on the bidirectional lead screw (13). A clamping block (15) is fixedly connected to the top of each of the two sliders. The clamping block (15) is used to clamp the two clamping blocks (10).