Traction center pin numerical milling positioning tool

Abstract

The utility model provides a numerical control milling positioning tool for a traction center pin. The numerical control milling positioning tool for the traction center pin comprises a tool platform used for positioning the center pin. A positioning plate is assembled on the tool platform in a sliding mode, bearing blocks are oppositely arranged on the positioning plate, and each bearing block is provided with a pressing plate assembly used for pressing and fixing the step portion of the center pin. A plurality of supporting adjusting columns are further assembled on the tool platform in a sliding mode and support and position the pin head portion of the center pin. According to the center pin adjusting device, the bearing blocks on the positioning plate are used for supporting the two step portions of the center pin in a matched mode, overall adjusting and positioning are stable, the adjusting range is large, the pin head portion of the center pin is effectively supported through the supporting adjusting column, the overall stability is large, and vibration of a workpiece in the machining process is eliminated; workpiece clamping correction is safe and fast, positioning is accurate, and repeated use can be achieved.

Description

Technical Field

[0001] This application relates to the field of center pin tooling positioning technology, and in particular to a traction center pin CNC milling positioning tooling. Background Technology

[0002] The traction center pin is a crucial load-bearing component on multimodal transport vehicles. It's a large shaft-like part, nearly 3 meters long and weighing over 1 ton, with an annual demand of around 400 pieces. After lathe machining, it requires machining on a gantry machining center to create the head shape, multiple side countersunk holes, multiple threaded holes, and the tail's flat square and round holes. Current CNC milling techniques for large components like the traction center pin typically use temporary, simple fixtures. These fixtures are time-consuming and labor-intensive to adjust and align before machining, and their safety performance is poor. Furthermore, the center pin vibrates during CNC milling, and the simple fixtures cannot effectively fix it, resulting in strong vibrations that easily cause deviations, affecting machining accuracy. Often, post-processing repairs are needed to improve accuracy and meet technical requirements, leading to low machining efficiency. Utility Model Content

[0003] This application provides a positioning fixture for CNC milling of a traction center pin. The positioning fixture accurately positions the center pin and ensures high stability, thus meeting the accuracy requirements of CNC milling.

[0004] This application provides a traction center pin CNC milling and positioning fixture, which includes a fixture platform for positioning the center pin;

[0005] A positioning plate is slidably mounted on the tooling platform. Supporting blocks are arranged opposite each other on the positioning plate, and each supporting block is provided with a pressure plate assembly for pressing and fixing the stepped part of the center pin.

[0006] The tooling platform is also slidably equipped with multiple support adjustment columns, which support and position the pin head of the center pin.

[0007] In this application, the two stepped parts of the center pin are matched by the receiving block on the positioning plate, which makes the overall positioning stable and the adjustment range large. In addition, the support adjustment column is used to effectively support the pin head of the center pin, which makes the overall stability better and eliminates the vibration of the workpiece during processing. The clamping and correction of the workpiece is safe, quick and accurate, and can be reused.

[0008] In one specific implementation scheme, a through-assembly slot is formed along the length of the tooling platform, and the positioning plate and the plurality of supporting adjustment columns are slidably mounted on the through-assembly slot, providing a large adjustment range.

[0009] In an embodiment, the through assembly slots are equidistantly spaced along the width direction of the tooling platform. The matching is higher, and the adjustment range is wider.

[0010] In an embodiment, each of the through assembly slots is a T-shaped slot body. The limiting sliding effect is higher.

[0011] In an embodiment, the positioning plate is slidably connected with at least two of the through assembly slots and can be locked at any position. The influence of the vibration generated in the machining process is effectively prevented, and the machining precision is ensured.

[0012] In an embodiment, the bottom of the positioning plate is provided with a plurality of T-shaped sliding blocks, and each of the T-shaped sliding blocks is slidably connected with a corresponding through assembly slot. The manufacturing process is simple.

[0013] In an embodiment, a plurality of top pin lifting ring members that can penetrate the T-shaped sliding blocks are distributed in a rectangular manner on the positioning plate. The positioning is realized, and the lifting is stable.

[0014] In an embodiment, each of the receiving blocks has a V-shaped positioning slot. The matching positioning center pin is matched.

[0015] In an embodiment, the pressing plate assembly comprises: a slide rail oppositely arranged on the receiving block, a connecting screw slidably assembled on the slide rail, and a pressing plate assembled between the two connecting screws.

[0016] The two connecting screws are threadedly connected with nut members for pressing and fixing the pressing plate. The adjustment range is certain, and the center pin is tightly fixed in the V-shaped positioning slot.

[0017] In an embodiment, the support adjustment column is provided with at least two, and each of the support adjustment columns is a screw lifting adjustment column body. The adjustment support range is wider. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The structure diagram of the center pin provided in the embodiment of the application is shown in the figure.

[0019] Figure 2 The structure diagram of the traction center pin multi-milling positioning tool provided in the embodiment of the application is shown in the figure.

[0020] Figure 3 The top view of the traction center pin multi-milling positioning tool provided in the embodiment of the application is shown in the figure.

[0021] REFERENCE NUMERALS:

[0022] Center pin-100, pin head part-110, first step part-120, second step part-130;

[0023] Tooling platform-200, through assembly groove-210;

[0024] Support adjusting column-300;

[0025] Positioning plate-400, first receiving block-410A, second receiving block-410B, slide rail-411, connecting screw-412, pressing plate-413, nut-414, jib screw eye-420. DETAILED DESCRIPTION

[0026] To make the objects, technical solutions and advantages of the present disclosure clearer, the present disclosure is further described in detail below with reference to specific embodiments and drawings.

[0027] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of the present disclosure should be understood as the general meaning understood by those skilled in the art to which the present disclosure belongs. The terms "first", "second" and the like used in one or more embodiments of the present disclosure do not represent any order, number or importance, but are only used to distinguish different components. The terms "include", "contain" and the like mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and the like are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "up", "down", "left", "right" and the like only represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships may also change accordingly.

[0028] In order to facilitate the understanding of the traction center pin number milling positioning tool provided by the embodiments of the present application, first of all, the application scenario of the traction center pin is explained. The traction center pin is an important force receiving component on a multi-modal integrated vehicle. It is a large shaft part with a length of about 3 meters and a weight of more than 1 ton. The annual demand is about 400 pieces. After being machined on a lathe, the head shape, multiple side counterbores, multiple threaded holes, tail flat square and circular hole need to be machined on a gantry machining center. In the prior art, the traction center pin is usually machined by using a temporary simple tool for clamping. This temporary simple tool is time-consuming and laborious to adjust and align before machining, and has poor safety performance. In addition, the center positioning pin will vibrate during the numerical control milling process. Due to the fixation of the simple tool, the machining requirement cannot be met, the vibration is strong, and deviation is prone to occur, which affects the machining precision. Therefore, the traction center pin numerical control milling positioning tool provided by the present application precisely positions the center pin by using the positioning tool, ensures high stability, and meets the numerical control milling precision requirement.

[0029] Reference Figure 1 As shown in Figure 1 The structure of the center pin is shown in the figure. As can be seen from Figure 1 The center pin 100 of the semi-finished product has two stepped parts, namely the first stepped part 120 and the second stepped part 130. The head of the center pin 100 is the pin head part 110. The overall volume is large, and the pin column is circular in shape. The positioning and correction of the simple tool is time-consuming and laborious. In addition, after the positioning standard is not met, the vibration generated during the machining process is easy to cause the center pin 100 to loosen, which affects the machining precision. Therefore, the traction center pin 100 numerical control milling positioning tool in the present application has a simple positioning and correction operation, the adjustment range is more extensive, and the positioning and machining effect is excellent.

[0030] Specific reference Figure 2 As shown in Figure 3 The traction center pin numerical control milling positioning tool provided by the present application includes a tool platform 200 for positioning the center pin 100. The tool platform 200 is used as the bearing body in the present application and is made of steel. It is assembled in the numerical control milling workshop to ensure high stability.

[0031] A positioning plate 400 is slidably mounted on the tooling platform 200. This positioning plate 400 uses a sliding assembly method, allowing for a wide adjustment range. The positioning plate 400 is a calibrated rectangular plate, and the center pin 100 does not require further calibration after being mounted on it. Specifically, when the positioning plate 400 is slidably mounted on the tooling platform 200, a through-slot 210 is formed along the length of the tooling platform 200, and the positioning plate 400 is slidably mounted on the through-slot 210. This provides a large adjustment range. Multiple through-slots 210 are evenly spaced along the width of the tooling platform 200. This results in higher compatibility and a wider adjustment range. Each through-slot 210 is a T-shaped groove, providing a high degree of limiting sliding effect. The positioning plate 400 is slidably connected to at least two through-slots 210 and can be locked in any position. This effectively prevents the impact of vibrations during processing and ensures processing accuracy. The bottom of the positioning plate 400 is equipped with multiple T-shaped sliders, each of which is slidably connected to the corresponding through-mount slot 210. The manufacturing process is simple. Multiple top screw lifting eyelets 420, which can pass through the T-shaped sliders, are rectangularly distributed on the positioning plate 400. This achieves positioning while ensuring lifting capability.

[0032] As can be seen from the above structure, by installing a T-shaped sliding groove at the bottom of the positioning plate 400 and matching the through assembly groove 210 for sliding connection, and by using the top screw lifting ring 420 for positioning after positioning, or by using the weight of the center pin 100 itself without positioning, the positioning plate 400 can also be positioned. In this application, the top screw lifting ring 420 is preferred for auxiliary positioning, thereby ensuring the stability of positioning and the overall effect is more significant.

[0033] When the cylindrical center pin 100 is fixedly installed on the positioning plate 400, the positioning plate 400 is provided with receiving blocks, and each receiving block is provided with a pressure plate assembly for pressing and fixing the stepped part of the center pin 100; specifically, the two receiving blocks are the first receiving block 410A and the second receiving block 410B, and both the first receiving block 410A and the second receiving block 410B are provided with V-shaped positioning grooves. The V-shaped positioning groove of the first receiving block 410A matches and limits the first stepped part 120, and the V-shaped positioning groove of the second receiving block 410B matches and limits the second stepped part 130, thereby accurately limiting the center pin 100.

[0034] In the process of pressing and fixing the center pin 100, the pressing plate assembly in the application comprises: opposite sliding rails 411 provided on the receiving block, connecting screws 412 slidingly assembled on the sliding rails 411, and a pressing plate 413 assembled between the two connecting screws 412; wherein the two connecting screws 412 are both threadedly connected with a nut member 414 for pressing and fixing the pressing plate 413. The center pin 100 is tightly fixed in the V-shaped positioning groove with a certain adjustment range.

[0035] In addition, a plurality of support adjustment columns 300 are slidingly assembled on the tool platform 200 in the application, and the plurality of support adjustment columns 300 support the pin head part 110 of the center pin 100. The support adjustment column 300 is provided at least two, and each support adjustment column 300 is a pair of wire lifting adjustment column bodies. The adjustment support range is more extensive.

[0036] In the application, the two stepped parts of the center pin 100 are matched and supported by the receiving block on the positioning plate 400, the overall adjustment and positioning are stable, the adjustment range is large, and the pin head part 110 of the center pin 100 is effectively supported by the support adjustment column 300, so that the overall stability is good, and the vibration of the workpiece during machining is eliminated; the workpiece is clamped, corrected, safe and fast, positioned accurately, and can be repeatedly used.

[0037] Those skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to limit the scope of the disclosure (including claims) to these examples; under the idea of the present disclosure, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of one or more embodiments of the present specification as described above. In order to be brief, they are not provided in detail.

[0038] In addition, in order to simplify the description and discussion, and so as not to make one or more embodiments of the present specification difficult to understand, the known power / ground connections of other components can or can not be shown in the provided drawings. In addition, the devices can be shown in the form of block diagrams in order to avoid making one or more embodiments of the present specification difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform on which one or more embodiments of the present specification will be implemented (i.e. these details should be fully within the understanding of those skilled in the art). With the specific details described to describe the exemplary embodiments of the present disclosure, it is obvious to those skilled in the art that one or more embodiments of the present specification can be implemented without these specific details or with changes to these specific details. Therefore, these descriptions should be considered as illustrative rather than limiting.

[0039] One or more embodiments of the specification are intended to encompass all such substitutions, modifications and variations as fall within the broad scope of the appended claims. Accordingly, any omission, modification, substitution, improvement, etc. made in the spirit and principle of one or more embodiments of the specification shall be included in the scope of protection of the present disclosure.

Claims

1. A center pin positioning tool for center pin milling, comprising a tool platform for positioning a center pin; characterized in that, a positioning plate is slidably assembled on the tool platform, and opposite positioning blocks are arranged on the positioning plate, and a pressing plate assembly for pressing and fixing a stepped portion of the center pin is arranged on each positioning block; a plurality of support adjusting columns are slidably assembled on the tool platform, and the support adjusting columns support the head portion of the center pin.

2. The center pin multi-milling positioning fixture of claim 1, wherein, A through assembly groove is formed on the tool platform along the length direction, and the positioning plate and the plurality of support adjusting columns are slidably assembled on the through assembly groove.

3. The center pin multi-milling positioning fixture of claim 2, wherein, The through assembly groove is equidistantly spaced along the width direction of the tool platform.

4. The center pin multi-milling positioning tooling of claim 3, wherein, Each through assembly groove is a T-shaped groove body.

5. The center pin multi-milling positioning tooling of claim 4, wherein, The positioning plate is slidably connected with at least two through assembly grooves and can be locked at any position.

6. The center pin multi-milling positioning fixture of claim 5, wherein, A plurality of T-shaped sliding blocks are arranged on the bottom of the positioning plate, and each T-shaped sliding block is slidably connected with a corresponding through assembly groove.

7. The center pin multi-milling positioning fixture of claim 6, wherein, A plurality of top wire lifting ring members are arranged on the positioning plate in a rectangular distribution and can penetrate the T-shaped sliding blocks.

8. The center pin multi-milling positioning fixture of claim 1, wherein, Each positioning block has a V-shaped positioning groove.

9. The center pin multi-milling positioning fixture of claim 8, wherein, The pressing plate assembly comprises: opposite slide rails arranged on the positioning block, connecting screws slidably assembled on the slide rails, and a pressing plate assembled between the two connecting screws; wherein, a nut member for pressing and fixing the pressing plate is threadedly connected to each connecting screw.

10. The center pin multi-milling positioning fixture of claim 4, wherein, The support adjusting column is at least provided with two, and each support adjusting column is a pair of wire lifting adjusting column bodies.

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