Winding type press and forming method of winding type press

Abstract

The invention relates to the technical field of press equipment, in particular to a winding type press and a forming method of the winding type press. The winding type press comprises a stand column and two beam bodies connected to the upper side and the lower side of the stand column respectively, winding grooves used for winding steel wires are formed in the beam bodies, a plurality of limiting bosses are arranged on the inner side wall face of each winding groove at intervals, and the boss faces of the limiting bosses are flush. The beam body is made of nodular cast iron. By the adoption of the method, the surface of the beam body and the whole side wall face of the winding groove do not need to be machined, the overall machining area and machining time of the beam body are reduced, and the machining period of the beam body is effectively shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of press equipment, and particularly relates to a winding press and a forming method of the winding press. Background Art

[0002] The winding press is provided with a frame composed of an upper beam, a lower beam and columns, wherein the columns are supported between the upper beam and the lower beam, and the whole frame is wound into one body by steel wires with an initial tension, and the upper beam, the lower beam and the columns are wound and pre-tightened by the steel wires.

[0003] In the related art, the upper beam, the lower beam and the columns are all castings formed by casting with cast steel. Due to the rough overall surface of the cast steel beam body, the bottom surface and the inner wall of the wire grooves of the upper beam and the lower beam need to be machined, resulting in a large area to be machined for the upper beam and the lower beam, a long overall machining time for the beam body, and an impact on the machining cycle of the beam body. Summary of the Invention

[0004] In order to solve the defects of the prior art, the present invention provides a winding press and a forming method of the winding press, which can effectively reduce the overall machining area and machining time of the beam body, and effectively shorten the machining cycle of the beam body.

[0005] In order to solve the above technical problems, the present invention provides a winding press, including columns and two beam bodies respectively connected to the upper and lower sides of the columns, the beam bodies are formed with winding grooves for winding steel wires, a plurality of limiting bosses are arranged at intervals on the inner side wall surface of the winding grooves, and the convex surfaces of the plurality of limiting bosses are flush; the beam bodies are made of ductile iron.

[0006] As an improvement of the above solution, a predetermined machining allowance is formed on the convex surface of the limiting boss, and the predetermined machining allowance is 2 mm - 3 mm.

[0007] As an improvement of the above solution, a clearance groove is formed between any two adjacent limiting bosses, and a predetermined depth is formed between the bottom wall surface of the clearance groove and the convex surface of the limiting boss, and the predetermined depth is 4 mm - 6 mm.

[0008] As an improvement of the above solution, the density of the beam body is 6.8 g / cm 3 -7.8 g / cm 3 .

[0009] As an improvement of the above solution, the winding groove is formed with an integrally formed bending section and straight edge sections, and the straight edge sections are located on both sides of the bending section;

[0010] Two winding surfaces are formed on the side surface of the column. The winding surfaces are arranged parallel to the straight edge segments, and the distance between the two straight edge segments is equal to the distance between the two winding surfaces.

[0011] The straight edge segments are formed with the predetermined machining allowance.

[0012] As an improvement to the above solution, a first positioning portion is provided on the bottom wall surface of the beam body, and second positioning portions are provided on both the upper wall surface and the lower wall surface of the column.

[0013] The distance between the first positioning portion and the straight edge segment is d1, the distance between the second positioning portion and the winding surface is d2, d1 is equal to d2, and the first positioning portion and the second positioning portion are connected in cooperation.

[0014] Correspondingly, the present invention also provides a forming method for a winding press. The forming method is used to prepare the winding press as described in any one of the above, and is characterized in that the forming method includes:

[0015] S1. Based on the casting model drawing of the beam body, the beam body is cast with ductile iron.

[0016] S2. The surface to be machined of the beam body is subjected to boring machining to obtain a machined winding groove surface and a machined bottom surface of the beam.

[0017] S3. The limiting bosses on the inner side wall surface of the winding groove in the beam body are subjected to turning machining to obtain a machined limiting boss surface.

[0018] S4. The machined bottom surface of the beam is fitted to the upper side surface and the lower side surface of the column, and the machined winding groove surface is flush with the outer side surface of the column; and steel wires are wound in the winding groove, and the steel wires are limited by the machined limiting boss surface to complete the connection and forming of the winding press.

[0019] As an improvement to the above solution, the step S3 includes:

[0020] S31. The boss surfaces of multiple limiting bosses in the beam body are subjected to rough turning machining to obtain rough turned boss surfaces.

[0021] S32. The multiple rough turned boss surfaces are simultaneously subjected to finish turning machining along the extension direction of the winding groove to obtain the machined limiting boss surface.

[0022] As an improvement to the above solution, the surface to be machined includes the bottom fitting surface of the beam body and the straight edge segment plane of the winding groove. The straight edge segment plane is located on both sides of the bottom fitting surface, and the step S2 includes:

[0023] S21. Rough boring and finish boring are carried out on the bottom joint surface to obtain the bottom surface of the processed beam body.

[0024] S22. Rough boring and finish boring are carried out on the plane of the two straight edge segments to obtain the processed winding groove surface.

[0025] As an improvement of the above solution, after the step S3, the following is further included:

[0026] S5. Process positioning holes on the bottom surface of the processed beam body.

[0027] Implementing the present invention has the following beneficial effects:

[0028] According to the winding press provided by the present invention, by utilizing the good casting process performance of ductile iron, the dimensional error of the beam body after preparation can be reduced, and the surface of the beam body is made flat and smooth as a whole after molding, effectively reducing the overall machining area of the surface of the beam body. At the same time, by forming a plurality of limiting bosses on the side wall surface of the winding groove, only the convex surface of the limiting boss needs to be machined when machining the side wall surface of the winding groove, so as to ensure the wire limiting effect while reducing the machining area of the side wall surface of the winding groove. Furthermore, compared with the beam body structure formed by cast steel, in this embodiment, the beam body does not need to machine the entire surface of the surface and the side wall surface of the winding groove, reducing the overall machining area and machining time of the beam body, and effectively shortening the machining cycle of the beam body. Description of the Drawings

[0029] Figure 1 is the front view structural schematic diagram of the winding press in an embodiment of the present invention;

[0030] Figure 2 is Figure 1 the sectional view structural schematic diagram taken along the section line C-C in

[0031] Figure 3 is the top view structural schematic diagram of the beam body in an embodiment of the present invention;

[0032] Figure 4 is the side view structural schematic diagram of the beam body in an embodiment of the present invention;

[0033] Figure 5 is Figure 4 the sectional view structural schematic diagram taken along the section line D-D in

[0034] Figure 6 is Figure 4 the enlarged structural schematic diagram at A in

[0035] Figure 7 is Figure 1 the partial sectional view structural schematic diagram at B in Detailed implementation manners

[0036] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby declared that the upper, lower, left, right, front, rear, inner, outer and other orientation terms that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and they do not specifically limit the present invention.

[0037] For the winding press provided in the first aspect of the present invention, the surface of the beam body 1 and the entire surface of the side wall of the winding groove 11 do not need to be machined, reducing the overall machining area and machining time of the beam body 1, and effectively shortening the machining cycle of the beam body 1.

[0038] In a specific embodiment of the present invention, as Figures 1 to 7 shown, the winding press includes columns 2 and two beam bodies 1 respectively connected to the upper and lower sides of the columns 2. The beam body 1 is formed with a winding groove 11 for winding a steel wire 3. A plurality of limiting bosses 12 are arranged at intervals on the inner side wall surface of the winding groove 11, and the boss surfaces of the plurality of limiting bosses 12 are flush. The beam body 1 is made of ductile iron. Then, the steel wire 3 can be wound in the winding groove 11, and the side limit of the steel wire 3 is carried out by using the boss surfaces of the plurality of limiting bosses 12 to ensure that the steel wire 3 is wound neatly and stably.

[0039] According to the winding press provided by the present invention, by using the good casting process performance of ductile iron, the dimensional error of the beam body 1 after preparation can be reduced, and the surface of the beam body 1 is integrally flat and smooth after molding, effectively reducing the overall machining area of the surface of the beam body 1. At the same time, by forming a plurality of limiting bosses 12 on the side wall surface of the winding groove 11, only the boss surfaces of the limiting bosses 12 need to be machined when machining the side wall surface of the winding groove 11, so as to ensure the limiting effect on the steel wire 3 while reducing the machining area of the side wall surface of the winding groove 11. Compared with the beam structure formed by casting steel, in this embodiment, the surface of the beam body 1 and the entire surface of the side wall of the winding groove 11 do not need to be machined, reducing the overall machining area and machining time of the beam body 1, and effectively shortening the machining cycle of the beam body 1.

[0040] Furthermore, when using ductile iron to form the beam body 1, the dimensional error after the preparation of the beam body 1 can also be reduced, so that there is no need to reserve too much machining allowance on the surface of the beam body 1 and the convex surface of the limiting boss 12. Specifically, a predetermined machining allowance is formed on the convex surface of the limiting boss 12, and the predetermined machining allowance is 2 mm - 3 mm, so as to further shorten the machining time of the convex surface of the limiting boss 12, and thus further shorten the machining cycle of the beam body 1. The convex surface of the limiting boss 12 can be rough machined and finish machined by machining methods such as turning or milling to ensure that the convex surfaces of multiple limiting bosses 12 are flush, and to ensure the limiting effect of the convex surface of the limiting boss 12 on the steel wire 3 wound in the winding groove 11.

[0041] It should be noted that the predetermined machining allowance can be adjusted according to the actual machining process, as long as it is ensured that there is no unprocessed area on the convex surface in the subsequent machining process, and no specific limitation is imposed here.

[0042] In this embodiment, as Figures 3 to 6 shown, a clearance groove 13 is formed between any two adjacent limiting bosses 12. By using the cross distribution of the clearance groove 13 and the limiting boss 12, while shortening the machining time of the inner wall surface of the winding groove 11, it is ensured that when the tool feeds between two adjacent limiting bosses 12, the machining tool will not contact the inner wall surface of the winding groove 11 to increase the cutting depth of the machining tool, and avoid increasing the wear degree of the machining tool or damaging the machining tool. A predetermined depth D is formed between the bottom wall surface of the clearance groove 13 and the convex surface of the limiting boss 12, and the predetermined depth D is 4 mm - 6 mm. Preferably, the predetermined depth D of the clearance groove 13 is 4 mm. When the steel wire 3 is wound in the winding groove 11, due to the appropriate depth of the clearance groove 13, the steel wire 3 will not be stuck in the clearance groove 13, so as to avoid the structure of the inner wall surface limiting boss 12 and the clearance groove 13 of the winding groove 11 from affecting the pre-tightening force applied by the winding press through the steel wire 3.

[0043] It should be noted that the machining method for multiple limiting bosses 12 in the winding groove 11 is preferably a machining method combining rough turning and finish turning. Among them, rough turning can machine each limiting boss 12 to the reserved allowance for finish turning, and then finish turning can machine multiple limiting bosses 12 simultaneously based on the extension direction of the winding groove 11 to ensure that the convex surfaces of multiple limiting bosses 12 are flush, and to ensure the limiting effect of multiple limiting bosses 12 on the steel wire 3 in the winding groove 11.

[0044] Among them, the feed speed of the machining tool on the convex surface of the limiting boss 12 is v1, and the suspended feed speed of the machining tool on the clearance groove 13 is v2. v1 is less than v2. For example, when v1 is 0.04π rad / s, v2 can be set to 2π rad / s to shorten the feed time of the machining tool on the clearance groove 13.

[0045] Further, to ensure the structural performance of the beam body 1, the projected length of the clearance groove 13 on the bottom surface of the beam body 1 is preferably the same as the projected length of the limit boss 12 on the bottom surface of the beam body 1.

[0046] In this embodiment, the density of the beam body 1 is 6.8 g / cm3 - 7.8 g / cm3, and the density of the beam body 1 is preferably 7.3 g / cm3. In the case of the same volume, the weight of the beam body 1 formed by ductile iron casting is lower than that of the beam body 1 formed by steel casting, thereby significantly reducing the overall weight of the winding press and effectively improving the transportation efficiency and energy consumption of the winding press.

[0047] In this embodiment, as Figure 5 shown, the winding groove 11 is formed with an integrally formed bending section 111 and straight-edge sections 112. The straight-edge sections 112 are located on both sides of the bending section 111. Two winding surfaces 21 are formed on the side surface of the column 2. The winding surfaces 21 are arranged parallel to the straight-edge sections 112, and the distance between the two straight-edge sections 112 is equal to the distance between the two winding surfaces 21. Thus, after the beam body 1 and the column 2 are connected and assembled, the transition position between the outer wall surfaces of the straight-edge sections 112 of the beam body 1 and the outer wall surface of the column 2 can be on the same connection surface, so that when the steel wire 3 is wound around the winding groove 11 and the column 2, it can be smoothly transitioned, ensuring the uniformity of the stress of each steel wire 3 when the winding press applies prestress through the steel wire 3.

[0048] To ensure that the distance between the two straight-edge sections 112 of the winding groove 11 is equal to the distance between the two winding surfaces 21, the straight-edge sections 112 need to be bored and / or milled. On the basis that the beam body 1 is formed by ductile iron casting, the straight-edge sections 112 are formed with a predetermined machining allowance to shorten the machining time of the straight-edge sections 112 of the winding groove 11 and further shorten the machining cycle of the beam body 1.

[0049] It should be noted that when processing the straight-edge sections 112, a machining method combining rough boring and finish boring is preferably adopted to shorten the machining time of the straight-edge sections 112 while ensuring the dimensional accuracy of the straight-edge sections 112.

[0050] It should also be noted that the winding surfaces 21 are preferably planes formed on the left and right sides of the column.

[0051] Further, to further ensure that there is no assembly misalignment between the beam body 1 and the column 2 after the beam body 1 and the column 2 are assembled, as Figure 7As shown in the figure, a first positioning portion 14 is provided on the bottom wall surface of the beam body 1, and second positioning portions 15 are provided on both the upper wall surface and the lower wall surface of the column 2. The distance between the first positioning portion 14 and the straight edge segment 112 is d1, and the distance between the second positioning portion 15 and the winding surface 21 is d2. d1 is equal to d2. The first positioning portion 14 and the second positioning portion 15 are cooperatively connected to realize the connection and positioning between the beam body 1 and the column 2, so as to ensure that after the beam body 1 and the column 2 are connected, the straight edge segment 112 of the beam body 1 and the outer wall surface of the column 2 are on the same connection surface, avoiding assembly misalignment, so as to further ensure that the steel wire 3 can be smoothly transitioned when wound around the winding groove 11.

[0052] In one specific embodiment, as Figure 7 shown, both the first positioning portion 14 and the second positioning portion 15 can be positioning holes. When connecting the beam body 1 and the column 2, both ends of the plug pin 16 can be inserted into the positioning holes of the beam body 1 and the column 2 respectively to realize the connection and positioning between the beam body 1 and the column 2. In another specific embodiment, the first positioning portion 14 can be a positioning hole, and the second positioning portion 15 can be a positioning column. When connecting the beam body 1 and the column 2, the positioning column of the column 2 can be correspondingly inserted into the positioning hole of the beam body 1 to realize the connection and positioning between the beam body 1 and the column 2.

[0053] It should be noted that, for further facilitating the connection and positioning between the beam body 1 and the column 2, a plurality of first positioning portions 14 can be formed in the beam body 1, a plurality of second positioning portions 15 can be formed in the column 2, and each first positioning portion 14 is cooperatively connected with a corresponding second positioning portion 15.

[0054] Correspondingly, a second aspect of the present invention provides a forming method for a winding press, wherein the forming method is used to prepare the winding press described in any one of the above embodiments. The forming method includes:

[0055] S1. Based on the casting model drawing of the beam body 1, the beam body 1 is cast using ductile iron.

[0056] It should be noted that the specific casting process may include workpiece casting steps such as melting, pouring, cooling and solidification, which will not be elaborated in detail here. After casting, a machining allowance of 2-3 mm is reserved on one side of the machining surface of the beam body 1 for subsequent machining of the machining surface.

[0057] S2. The surface to be machined of the beam body 1 is subjected to boring machining to obtain a machined winding groove surface and a machined beam bottom surface.

[0058] S3. The limiting boss 12 on the inner side wall surface of the winding groove 11 in the beam body 1 is subjected to turning machining to obtain a machined limiting boss surface.

[0059] S4. Fit the bottom surface of the processed beam body to the upper and lower side surfaces of the column 2, make the processed winding groove surface flush with the outer side surface of the column 2, and wind the steel wire 3 around the winding groove 11. Use the processed limiting boss surface to limit the steel wire 3 to complete the connection and forming of the winding press.

[0060] For the forming method of the winding press provided in this embodiment, the beam body 1 is formed by casting ductile iron. Its surface is integrally flat and smooth, effectively reducing the machining area of the surface of the beam body 1. And when machining the inner side wall surface of the winding groove 11, only the convex surface of the limiting boss 12 needs to be machined, without machining the entire inner side wall surface of the winding groove 11, effectively reducing the machining area of the inner side wall surface of the winding groove 11. Therefore, by using the forming method of the winding press provided in this embodiment, the overall machining time of the upper beam body and the lower beam body can be effectively reduced, and then the machining cycle for the connection and forming of each component of the winding press can be correspondingly reduced, which is beneficial to shortening the delivery time of the whole machine.

[0061] Specifically, step S3 includes:

[0062] S31. Rough turning the convex surfaces of multiple limiting bosses 12 in the beam body 1 to obtain rough turned convex surfaces. Specifically, when rough turning, each limiting boss 12 can be processed separately until the preset allowance for finish turning is reached. Therefore, when rough turning, there is no need to feed at the position of the relief groove 13, further reducing the rough turning time of multiple limiting bosses 12 in the beam body 1.

[0063] S32. Simultaneously finish turning the multiple rough turned convex surfaces along the extension direction of the winding groove 11 to obtain the processed surface of the limiting boss 12, so as to ensure that the convex surfaces of multiple limiting bosses 12 are flush, and ensure the limiting effect of multiple limiting bosses 12 on the steel wire 3 in the winding groove 11. The feed speed of the machining tool on the convex surface of each limiting boss 12 is v1, and the feed speed when the tool is suspended on each relief groove 13 is v2, and v1 is less than v2. For example, when v1 is 0.04π rad / s, v2 can be set to 2π rad / s to shorten the feed time of the machining tool on the relief groove 13.

[0064] Specifically, the surface to be processed includes the bottom fitting surface of the beam body 1 and the straight-edge section plane of the winding groove 11, and the straight-edge section plane is located on both sides of the bottom fitting surface. Step S2 includes:

[0065] S21. Rough boring and finish boring the bottom fitting surface to obtain the processed bottom surface of the beam body, so that the bottom surface of the beam body can fit with the upper and lower side surfaces of the column 2, and ensure the effect of applying prestress to the workpiece in the column 2 after the steel wire 3 is wound.

[0066] S22. Rough boring and finish boring are performed on the flat surfaces of the two straight edge segments to obtain the processed winding groove surfaces, thereby ensuring that the distance between the two processed winding groove surfaces is equal to the distance between the winding surfaces 21 on both sides of the column 2. Thus, after the beam body 1 and the column 2 are assembled, the connection positions between the outer wall surface of the straight edge segment 112 of the beam body 1 and the winding surface 21 of the column 2 can be on the same connection surface, and the steel wire 3 can be smoothly transitioned when wound around the winding groove 11 and the column 2, ensuring the uniformity of the stress of each steel wire 3 when the winding press applies prestress to the column 2 through the steel wire 3.

[0067] Further, after step S3, the following is also included:

[0068] S5. Process positioning holes on the bottom surface of the processed beam body to facilitate the connection positioning between the beam body 1 and the column 2 by using the positioning holes, so that there is no assembly misalignment between the beam body 1 and the column 2, and further ensure that the steel wire 3 can be smoothly transitioned at the connection position between the beam body 1 and the column 2 during winding.

[0069] Specifically, when processing the positioning holes, the processed winding groove surfaces on both sides of the beam body 1 are used as the positioning reference, and the processed winding groove surfaces on both sides are clamped, and drilling and tapping are performed on the corresponding positions in the bottom surface of the processed beam body to ensure that the positioning holes can have relatively accurate positional tolerances in the bottom surface of the processed beam body, and further ensure that there is no assembly misalignment when the beam body 1 and the column 2 are connected.

[0070] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art of the present technology, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A winding press, characterized in that: It includes a column and two beam bodies respectively connected to the upper and lower sides of the column. The beam body is formed with a winding groove for winding a steel wire. The inner wall surface of the winding groove is provided with a plurality of limiting bosses at intervals, and the boss surfaces of the plurality of limiting bosses are flush. The beam body is made of ductile iron.

2. The winding press according to claim 1, characterized in that: The boss surface of the limiting boss is formed with a predetermined machining allowance, and the predetermined machining allowance is 2mm-3mm.

3. The winding press according to claim 1, characterized in that: An air avoidance groove is formed between any two adjacent limiting bosses, and a predetermined depth is formed between the bottom wall surface of the air avoidance groove and the boss surface of the limiting boss, and the predetermined depth is 4mm-6mm.

4. The winding press according to claim 1, characterized in that: The density of the beam body is 6.8 g / cm 3 -7.8g / cm 3 .

5. The winding press according to claim 2, characterized in that: The winding groove is formed with an integrally formed curved section and a straight side section, and the straight side sections are located on both sides of the curved section; Two winding surfaces are formed on the side of the column, the winding surfaces are arranged in parallel with the straight edge segments, and the distance between the straight edge segments on both sides is equal to the distance between the two winding surfaces; The straight edge section is formed with the predetermined machining allowance.

6. The winding press according to claim 5, characterized in that The bottom wall surface of the beam body is provided with a first positioning portion, and the upper wall surface and the lower wall surface of the column are both provided with a second positioning portion; The distance between the first positioning portion and the straight edge segment is d1, the distance between the second positioning portion and the winding surface is d2, d1 is equal to d2, and the first positioning portion and the second positioning portion are cooperatively connected.

7. A forming method of a winding press, the forming method being used to prepare the winding press as claimed in any one of claims 1 to 6, characterized in that: The molding method comprises: S1. Based on the casting model diagram of the beam body, the beam body is cast using ductile iron; S2, boring the surface to be processed of the beam body to obtain a wound groove surface and a bottom surface of the beam body after processing; S3, turning the limiting boss on the inner wall of the winding groove in the beam body to obtain a limited boss surface after machining; S4, fit the processed bottom surface of the beam body with the upper and lower sides of the column, and make the processed winding groove surface flush with the outer side surface of the column; and wind the steel wire in the winding groove, use the processed limiting boss surface to limit the steel wire, and complete the connection forming of the winding press.

8. The forming method of the winding press according to claim 7, characterized in that: The step S3 comprises: S31, performing rough turning processing on the boss surfaces of the plurality of limiting bosses in the beam body to obtain rough-turned boss surfaces; S32, simultaneously performing fine turning processing on the plurality of rough-turned boss surfaces along the extension direction of the winding groove to obtain the processed limiting boss surfaces.

9. The forming method of the winding press according to claim 7, characterized in that: The surface to be processed includes the bottom fitting surface of the beam body and the straight side segment plane of the winding groove, and the straight side segment plane is located on both sides of the bottom fitting surface. The step S2 includes: S21, performing rough boring and fine boring on the bottom fitting surface to obtain the processed bottom surface of the beam body; S22, performing rough boring and fine boring on the straight edge segment planes on both sides to obtain the processed winding groove surface.

10. The forming method of the winding press according to claim 7, characterized in that: After step S3, the method further includes: S5, processing positioning holes on the bottom surface of the processed beam body.

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