A processing device of a pulley

Abstract

The utility model belongs to the pulley processing technical field, concretely relates to a pulley's processingequipment, include: fixed subassembly: including fixed screw rod, fixed screw rod has clamping head, non -threaded screw rod part and threaded screw rod part, interval subassembly: including gasket, gasket interval is located between adjacent pulley disc blank, the thickness of gasket is greater than the difference between the maximum height h1 of pulley finished product and the thickness h2 of pulley disc blank, forming subassembly: including mould wheel, mould wheel includes pressure roller and connecting square bar, pressure roller has conical working surface, the end of conical working surface has the forming arc r1 matched with the U-shaped groove bottom arc r of pulley disc blank, and pressure roller is connected to one end of connecting square bar, the utility model has low performance and precision requirement to equipment, and can complete processing on the same ordinary machine tool, has low skill requirement to operating personnel, reduces the thickness of material, reduces material loss, lathe cutting process is simple, and simple and convenient operation can be processed and formed together, improves production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of pulley processing technology, and specifically relates to a pulley processing device. Background Technology

[0002] In mechanical equipment, pulleys are common transmission or guiding components. Currently, the mainstream machining method for such pulleys is to integrally turn a circular steel plate blank on a lathe. This process has significant limitations. To ensure that the wheel disc has a sufficient final height h1, a blank steel plate with a thickness much greater than h1 must be selected. In subsequent turning operations, a large amount of material needs to be removed from the central area of ​​the blank, resulting in extremely low raw material utilization and serious material waste. The formation of the "V"-shaped groove is the most difficult part of the entire machining process. Its complex cross-sectional shape requires precise tool paths and multiple tool passes, making machining difficult and involving a large amount of material removal. This not only significantly extends the machining time per piece and reduces production efficiency, but also exacerbates tool wear, further increasing manufacturing costs. Existing integral turning methods generally suffer from problems such as material waste, time consumption, low efficiency, and high processing costs when machining such pulleys. Summary of the Invention

[0003] The purpose of this invention is to solve the problems of material waste, time consumption, low efficiency and high processing cost that are common in the processing of pulleys in the prior art.

[0004] To achieve the above objectives, this utility model provides a pulley processing device, comprising:

[0005] The fixing component includes a fixing screw, which has a cylindrical clamping head, a threadless screw portion, and a threaded screw portion connected in sequence; the threadless screw portion is used to pass through multiple pulley blanks to be processed; the threaded screw portion is used to screw on a lock nut.

[0006] Spacer assembly: includes multiple gaskets, which are used to fit onto the unthreaded screw portion and are spaced apart between adjacent pulley blanks; the thickness of the gaskets is greater than the difference between the maximum height h1 of the finished pulley and the thickness h2 of the pulley blank;

[0007] Forming assembly: includes a mold wheel, the mold wheel including a pressure roller and a connecting square rod; the pressure roller has a tapered working surface that matches the V-groove of the finished pulley, and the end of the tapered working surface has a forming arc r1 that matches the bottom arc r of the U-groove of the pulley blank; the pressure roller is rotatably connected to one end of the connecting square rod by ball bearings, the connecting square rod being used to be mounted on a lathe tool post.

[0008] Preferably, the pulley blank has a U-shaped groove on its periphery, and the bottom arc of the U-shaped groove is r.

[0009] Preferably, a center positioning hole is drilled at the center of the end circular plane of the threaded screw portion.

[0010] Compared with the prior art, the advantages of this utility model are:

[0011] This invention has low requirements for equipment performance and precision, and can complete the processing on the same ordinary machine tool; it also does not require high skills from operators. Its main advantages are that it reduces the thickness of the material used compared to the original technology, thus reducing material loss; the lathe cutting process is simpler than the original technology, and the mold forming operation is simple and convenient, and multiple products can be processed and formed at the same time, which greatly improves the production efficiency of the products. Attached Figure Description

[0012] Figure 1 A schematic diagram showing the machining of multiple "U"-shaped pulley blanks into "V"-shaped pulley blanks;

[0013] Figure 2 1. A schematic diagram of the structure for fixing the screw;

[0014] Figure 3 Here is a schematic diagram of the mold wheel structure;

[0015] Figure 4 1. A schematic diagram of a U-shaped pulley system;

[0016] Figure 5 A schematic diagram of a "V"-shaped pulley system;

[0017] Figure 6 A schematic diagram illustrating the process of machining a "U"-shaped groove into a "V"-shaped groove for a pulley plate;

[0018] The components include: 1. Fixed screw; 2. Clamping head; 3. Unthreaded screw section; 4. Threaded screw section; 5. Pulley blank; 6. Locking nut; 7. Washer; 8. Die wheel; 9. Pressure roller; 10. Square rod; 11. Lathe tool post; 12. U-groove; 13. V-groove; 14. Lathe chuck jaw; 15. Ejector pin; 16. Center positioning hole; 17. Rounding corner cutter; 18. Ball bearing. Detailed Implementation

[0019] To make the purpose, principle and structure of this utility model clearer, the following description is provided in conjunction with the accompanying drawings and specific embodiments.

[0020] See Figure 1 This utility model provides a pulley processing device, including a fixing component, a spacing component, and a forming component. The fixing component includes a fixing screw 1, the spacing component includes multiple gaskets 7, and the forming component includes a mold wheel 8.

[0021] See Figure 2The fixing screw 1, from top to bottom, includes a cylindrical clamping head 5, a threadless screw part 6, and a threaded screw part 7. The threadless screw part 6 is used to pass through multiple pulley blanks to be processed, and the threaded screw part 7 is used to screw on the locking nut 9. The fixing screw 4 can simultaneously fit multiple "V"-shaped pulley blanks. In addition to fixing the "V"-shaped pulley blanks, the cylindrical clamping head 5 can be fixed by the lathe chuck jaws 18. The length of the threadless screw part 6 is determined by the total thickness of the shaft hole of the "V"-shaped pulley blank plus the total thickness of the shims 10 that separate each disc. The outer diameter of the threadless screw part 6 should have no obvious looseness in the fit between it and the shaft hole of the pulley. A center positioning hole is drilled at the center of the end circular plane of the threaded screw part 7. The shim 10 is used to be fitted onto the unthreaded screw part 6 and is spaced between adjacent pulley blanks. The thickness of the shim 10 is greater than the difference between the maximum height h1 of the finished pulley and the thickness h2 of the pulley blank.

[0022] See Figure 3 The mold wheel includes a pressure roller 12 and a connecting square rod 13. The pressure roller 12 is machined from alloy steel and has a tapered working surface 14 that matches the V-shaped groove of the finished pulley. The end of the tapered working surface 14 has a forming arc r1 that matches the bottom arc r of the U-shaped groove of the pulley blank. The pressure roller 12 is rotatably connected to one end of the connecting square rod 13 by ball bearings. The connecting square rod 13 is used to install on the lathe tool post 15. The mold wheel 11 is used to process the "U"-shaped pulley groove into a "V"-shaped pulley groove so that the pulley blank meets the requirements of the "U"-shaped pulley blank.

[0023] See Figure 2 , Figure 2 , Figure 3 This utility model provides a pulley processing device, which first ensures Figure 1 , Figure 2 The dimensions h2, h3, b of the middle pulley blank, as well as the bottom arc r and the included angle θ, are kept consistent. The thickness of the pulley blank is selected according to the thickness h2 at the pulley disc shaft hole. Since h1 is greater than h2, the material thickness can be reduced, saving costs. The groove is first machined into a "U" shaped pulley blank, and then machined into a "V" shaped pulley blank using a mold wheel, so that the pulley groove conforms to the angle θ. The process is simple and efficient.

[0024] A pulley blank, wherein the circumference of the pulley blank is a U-shaped groove and the bottom arc of the U-shaped groove is r.

[0025] See Figure 1 , Figure 6 The actual processing steps of this utility model are as follows:

[0026] S1: Use the lathe chuck jaws 18 to clamp the cylindrical clamping head 5 of the fixed screw 4, and prevent the longitudinal axis of the unthreaded screw part 6 from rotating and running.

[0027] S2: Insert a U-shaped pulley blank into the unthreaded screw part 6 and then insert a washer 10. Repeat the operation until the unthreaded screw part 6 is full. Screw the bolt into the threaded screw part 7 to lock it securely. Insert the ejector pin 19 on the lathe tailstock into the lathe ejector pin hole 20 and then lock the tailstock.

[0028] S3: Install the mold wheel 11 and the rounding cutter 21 on the lathe tool post, and adjust the center;

[0029] S4: Turn on the lathe and use the fillet cutter 21 to fillet the two sides of the "U"-shaped pulley blank according to... Figure 6 As shown;

[0030] S5: Gradually insert the pressure roller 12 of the mold roller 11 into the "U"-shaped pulley groove until it contacts the arc bottom of the "U"-shaped pulley groove to complete the operation.

[0031] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and novel concept of this utility model, should be included within the protection scope of this utility model.

Claims

1. A pulley processing apparatus, characterized in that, include: The fixing component includes a fixing screw, which has a cylindrical clamping head, a threadless screw portion, and a threaded screw portion connected in sequence; the threadless screw portion is used to pass through multiple pulley blanks to be processed; the threaded screw portion is used to screw on a lock nut. Spacer assembly: includes multiple gaskets, which are used to fit onto the unthreaded screw portion and are spaced apart between adjacent pulley blanks; the thickness of the gaskets is greater than the difference between the maximum height h1 of the finished pulley and the thickness h2 of the pulley blank; Forming assembly: includes a mold wheel, the mold wheel including a pressure roller and a connecting square rod; the pressure roller has a tapered working surface that matches the V-groove of the finished pulley, and the end of the tapered working surface has a forming arc r1 that matches the bottom arc r of the U-groove of the pulley blank; the pressure roller is rotatably connected to one end of the connecting square rod by ball bearings, the connecting square rod being used to be mounted on a lathe tool post.

2. The pulley processing device as described in claim 1, wherein the pulley blank has a U-shaped groove on its periphery and the bottom arc of the U-shaped groove is r.

3. In the pulley processing device as described in claim 1, a central positioning hole is drilled at the center of the end circular plane of the threaded screw portion.

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