Taper hole reaming device for tapered forge piece

Abstract

The utility model provides a taper hole reaming device for a taper forge piece, and particularly relates to the field of forging. The reaming device comprises a mandrel supporter, a saddle, a floating base, a supporting block and a conical block. The saddle is rotatably arranged at the top of the mandrel supporter and extends in the horizontal direction; the floating base is arranged below the saddle and comprises an elastic piece and a floating bearing part, and the floating bearing part can move up and down under the support of the elastic piece; the supporting block is arranged at the top of the floating supporting part and provided with a supporting groove for supporting the conical forging stock, and the shape of the supporting groove is matched with the shape of the outer wall of the conical forging stock to be reamed after forming; the conical block is arranged at the top of the floating bearing part, the inclined face of the conical block abuts against the large end of the conical forge piece blank, and the included angle alpha between the inclined face and the vertical face is equal to the final included angle beta of a to-be-formed conical hole. And the bearing groove corresponds to the inclined direction of the inclined surface. According to the broaching device, through joint positioning of the bearing groove and the conical block, the problem that a conical forge piece blank is prone to distortion in the generatrix direction can be solved.

Description

Technical Field

[0001] The utility model relates to the field of forging, in particular to a tapered hole expanding device for a tapered forging. Background Art

[0002] Tapered forgings are metal forgings with a conical shape, which are manufactured through forging processes and are widely used in various industrial fields such as automobile manufacturing, aerospace, and machinery manufacturing. The tapered hole expansion of tapered forgings refers to the processing of the tapered hole on the forging to increase its diameter or adjust its shape to meet specific design and functional requirements. When expanding the tapered hole of a tapered forging, due to the large size of the forging and the lack of positioning support, the generatrix of the tapered forging is easily distorted during the expansion process. Utility Model Content

[0003] In view of the above shortcomings of the prior art, the utility model provides a tapered hole expanding device for a tapered forging to improve the problem that the tapered hole expanding process of the tapered forging has no positioning support and is easily twisted along the generatrix direction.

[0004] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a conical hole reaming device for a conical forging, the reaming device comprises a horse frame, a horse lever, a floating base, a support block and a conical block, the horse lever can be rotatably arranged on the top of the horse frame and extends in the horizontal direction; the floating base is arranged below the horse lever and comprises an elastic member and a floating supporting portion extending upward, the floating supporting portion can move up and down within a set range under the support of the elastic member; the support block is arranged on the top of the floating supporting portion and has a function of supporting the conical forging blank The supporting groove has a shape that matches the shape of the outer wall of the tapered forging blank to be expanded after final forming; the conical block is arranged on the top of the floating supporting portion and is located at the large end of the tapered forging blank, and the conical block has an inclined surface, which abuts against the large end of the tapered forging blank, and the angle α with the vertical plane is equal to the final angle β of the tapered hole to be formed; wherein the supporting groove corresponds to the inclination direction of the inclined surface, so that the tapered forging blank can be positioned together by moving up and down under the pressure of the tapered forging blank.

[0005] In one example of the utility model, the horse rack includes a first support plate and a second support plate arranged opposite to the first support plate, one end of the horse lever is rotatably set on the top of the first support plate, and the other end of the horse lever is rotatably set on the top of the second support plate.

[0006] In an example of the present invention, a first fixing seat for fixing the first support plate is provided on the side of the bottom of the first support plate facing away from the second support plate, and a second fixing seat for fixing the second support plate is provided on the side of the bottom of the second support plate facing away from the first support plate.

[0007] In an example of the present utility model, the floating base further includes a fixed part disposed opposite to the floating supporting part, one end of the elastic member is fixedly connected to the floating supporting part, and the other end of the elastic member is fixedly connected to the fixed part.

[0008] In an example of the present utility model, the floating base further includes a guide post, the guide post is fixedly connected to one of the floating supporting part and the fixed part, and is slidably connected to the other of the floating supporting part and the fixed part.

[0009] In an example of the present utility model, the floating base includes a plurality of the elastic members and a plurality of the guide posts, and the plurality of elastic members and the plurality of guide posts are both distributed on two sides of the floating supporting part and the fixed part.

[0010] In an example of the present utility model, both the floating supporting part and the fixed part are cuboids.

[0011] In an example of the present utility model, steps are provided on one side of the floating supporting part and the fixed part that face each other.

[0012] In an example of the present utility model, through holes for installing the guide posts are provided on both the floating supporting part and the fixed part, and the guide posts are in clearance fit with the through holes.

[0013] In an example of the present utility model, the supporting block is detachably connected to the floating supporting part, and the tapered block is detachably connected to the floating supporting part.

[0014] For the taper hole reaming device of the tapered forging of the present utility model, the mandrel is rotatably arranged at the top of the horse frame and extends in the horizontal direction, the floating base is arranged below the mandrel, the floating supporting part of the floating base can move up and down within a set range under the support of the elastic member, the tapered block is arranged at the top of the floating supporting part and is located at the large end of the forging blank of the tapered forging, the supporting block is arranged at the top of the floating supporting part, and the supporting groove of the supporting block corresponds to the inclination direction of the inclined surface of the tapered block. When reaming the taper hole of the forging blank of the tapered forging, the forging blank of the tapered forging to be reamed is hung on the mandrel, the forging blank of the tapered forging rotates with the mandrel, and the rotating interval presses and forges the forging blank of the tapered forging from above the mandrel through the upper anvil. During the whole reaming process, the supporting block and the tapered block move up and down with the floating supporting part under the extrusion of the forging blank of the tapered forging, the inner wall of the supporting groove contacts the outer wall of the forging blank of the tapered forging to support the forging blank of the tapered forging, and at the same time, the inclined surface of the tapered block abuts against the large end of the forging blank of the tapered forging. The supporting groove and the tapered block jointly position the forging blank of the tapered forging, which can limit the swing of the forging blank of the tapered forging during the pressing and forging process, and can improve the problem that the forging blank of the tapered forging is prone to twist along the generatrix direction. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 The structural schematic diagram of the reaming device for the tapered hole of the tapered forging of the present utility model in an embodiment;

[0017] Figure 2 For Figure 1 The structural schematic diagram of the reaming device for the tapered hole of the tapered forging in [a certain reference] after extrusion in an embodiment;

[0018] Figure 3 The schematic diagram of the cooperation between the support block and the tapered block and the floating base of the reaming device for the tapered hole of the tapered forging of the present utility model in an embodiment;

[0019] Figure 4 The left view of the cooperation between the support block and the tapered block and the floating base of the reaming device for the tapered hole of the tapered forging of the present utility model in an embodiment;

[0020] Figure 5 The top view of the floating base of the reaming device for the tapered hole of the tapered forging of the present utility model in an embodiment.

[0021] Element number description

[0022] 100, horse frame; 110, first support plate; 111, first fixed seat; 120, second support plate; 121, second fixed seat; 200, horse bar; 300, floating base; 310, elastic member; 320, floating support portion; 330, fixed portion; 340, guide post; 400, support block; 410, support groove; 500, tapered block; 510, inclined surface; 600, tapered forging blank. Detailed implementation manners

[0023] The following describes the implementation modes of the present utility model through specific examples. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific implementation modes. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. It should also be understood that the terms used in the embodiments of the present utility model are for describing specific implementation modes and are not intended to limit the protection scope of the present utility model. The test methods without specific conditions noted in the following embodiments are usually carried out according to conventional conditions or according to the conditions recommended by each manufacturer.

[0024] It should be noted that the terms such as "upper", "lower", "left", "right", "", "middle" and "one" cited in this specification are only for the convenience of clear narration and are not intended to limit the scope of implementation of the present utility model. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope of implementation of the present utility model.

[0025] Please refer to Figures 1 to 5 , the present utility model provides a reaming device for the tapered hole of a tapered forging. The reaming device includes a horse frame 100, a horse bar 200, a floating base 300, a support block 400 and a tapered block 500. The support block 400 and the tapered block 500 are arranged on the top of the floating base 300. During the reaming process, the support block 400 and the tapered block 500 jointly position the forging blank 600 of the tapered forging, can limit the swing of the forging blank 600 of the tapered forging during the press forging process, and can improve the problem that the forging blank 600 of the tapered forging is prone to distortion along the generatrix direction.

[0026] Please refer to Figure 1 and Figure 2 , the horse bar 200 is rotatably arranged on the top of the horse frame 100 and extends in the horizontal direction. In one embodiment, the horse frame 100 includes a first support plate 110 and a second support plate 120 arranged opposite to the first support plate 110. One end of the horse bar 200 is rotatably arranged on the top of the first support plate 110, and the other end of the horse bar 200 is rotatably arranged on the top of the second support plate 120. Exemplarily, openings (not shown in the figure) for placing the horse bar 200 are arranged on the tops of both the first support plate 110 and the second support plate 120, and the horse bar 200 rotates within the openings. The shape of the openings is not limited herein, and the shape of the openings includes but is not limited to U-shaped or V-shaped, as long as the horse bar 200 can rotate along its inner wall. As an example, the horse bar 200 can be connected to the output end of the drive system to rotate and drive the forging blank 600 of the tapered forging to rotate, realizing the automation of the reaming process.

[0027] Further, to enhance the stability of the horse frame 100, a first fixing seat 111 for fixing the first support plate 110 is provided on the side of the bottom of the first support plate 110 facing away from the second support plate 120, and a second fixing seat 121 for fixing the second support plate 120 is provided on the side of the bottom of the second support plate 120 facing away from the first support plate 110. In this application, the sizes of the first support plate 110 and the second support plate 120 and the distance between the first support plate 110 and the second support plate 120 are not limited and are adjusted according to the size of the tapered forging billet 600 to be processed. In other embodiments, the first support plate 110 and the second support plate 120 may also be fixedly connected to enhance the stability of the horse frame 100. Exemplarily, the first support plate 110 and the second support plate 120 are detachably connected by a connecting plate, which facilitates adjusting the distance between the first support plate 110 and the second support plate 120 to be applicable to the processing of tapered forging billets 600 of various sizes.

[0028] Please refer to Figures 1 to 5 , in an embodiment, the floating base 300 is disposed below the horse bar 200. The floating base 300 includes an elastic member 310 and an upwardly protruding floating support portion 320. The floating support portion 320 can move up and down within a set range under the support of the elastic member 310. The floating base 300 further includes a fixed portion 330 disposed opposite to the floating support portion 320. One end of the elastic member 310 is fixedly connected to the floating support portion 320, and the other end of the elastic member 310 is fixedly connected to the fixed portion 330. Further, the floating base 300 further includes a guide post 340 for guiding, to prevent the relative positions of the floating support portion 320 and the fixed portion 330 from shifting due to insufficient supporting force of the elastic member 310 when the floating support portion 320 moves up and down. The guide post 340 is fixedly connected to one of the floating support portion 320 and the fixed portion 330 and slidably connected to the other of the floating support portion 320 and the fixed portion 330. Exemplarily, the guide post 340 is fixedly connected to the fixed portion 330 and slidably connected to the floating support portion 320, or the guide post 340 is fixedly connected to the floating support portion 320 and slidably connected to the fixed portion 330.

[0029] Please refer to Figures 3 to 5, in one embodiment, the floating base 300 includes a plurality of elastic members 310 and a plurality of guide posts 340. The plurality of elastic members 310 and the plurality of guide posts 340 are both distributed on both sides of the floating support portion 320 and the fixed portion 330. There is no limit to the number of the elastic members 310 and the guide posts 340 here, and it can be adjusted according to actual needs. The number of the elastic members 310 and the number of the guide posts 340 can be the same or different. In this embodiment, the number of the elastic members 310 is the same as the number of the guide posts 340, and the elastic members 310 and the guide posts 340 are distributed in a one-to-one correspondence on both sides of the floating support portion 320 and the fixed portion 330. Exemplarily, the number of both the elastic members 310 and the guide posts 340 is four, which are respectively located at the four corners of the floating support portion 320 and the fixed portion 330. In other embodiments, the number of the guide posts 340 can also be other numbers, such as six or eight, etc. When expanding the hole of the tapered forging billet 600, the tapered forging billet 600 presses against the supporting block 400 and the tapered block 500, and the supporting block 400 and the tapered block 500 push the floating support portion 320 downward. After the hole expansion of the tapered forging billet 600 is completed, the mandrel 200 and the tapered forging billet 600 are removed together, and the elastic members 310 bounce up the floating support portion 320. In this embodiment, the elastic members 310 are springs, and the springs are sleeved on the corresponding guide posts 340. In other embodiments, the elastic members 310 can also be other elastic materials, as long as the floating support portion 320 can be bounced up and reset after the tapered forging billet 600 is removed.

[0030] Furthermore, through holes for placing the guide posts 340 are provided on both the floating support portion 320 and the fixed portion 330. The number of the through holes corresponds to the number of the guide posts 340, and the positions of the through holes on the floating support portion 320 and the through holes on the fixed portion 330 are in one-to-one correspondence. Both ends of the guide posts 340 are respectively located in the through holes of the floating support portion 320 and the fixed portion 330. The diameter of the through holes matches the diameter of the guide posts 340, realizing the clearance fit between the guide posts 340 and the through holes, which is convenient for the floating support portion 320 to slide radially along the guide posts 340.

[0031] Please refer to Figure 4 and Figure 5 , both the floating support portion 320 and the fixed portion 330 are square structures, such as a cuboid or a cube. There is no limit to the specific shapes of the floating support portion 320 and the fixed portion 330 here, and it can be adjusted according to actual needs. In this embodiment, both the floating support portion 320 and the fixed portion 330 are cuboids, and the distance between the floating support portion 320 and the fixed portion 330 in the free state is adjusted according to the size of the tapered forging billet 600. Preferably, steps are provided on both sides of the floating support portion 320 and the fixed portion 330, that is, the two sides where the elastic members 310 and the guide posts 340 are provided are recessed inward, which is convenient for installing the elastic members 310 between the floating support portion 320 and the fixed portion 330.

[0032] Please refer toFigures 1 to 3 In one embodiment, the supporting block 400 is disposed on the top of the floating base 300 and has a supporting groove 410 for supporting the conical forging blank 600. The shape of the supporting groove 410 matches the outer wall shape of the conical forging blank 600 after final forming. Further, the supporting block 400 is detachably connected to the floating base 300, and different processing requirements of the conical forging blanks 600 with different tapers can be met by replacing the supporting block 400. The tapered block 500 is disposed on the top of the floating supporting portion 320 and is located at the large end of the conical forging blank 600. The tapered block 500 has an inclined surface 510. The inclined surface 510 abuts against the large end of the conical forging blank 600, and the included angle α with the vertical plane is equal to the final included angle β of the tapered hole to be formed. Further, the tapered block 500 is detachably connected to the floating supporting portion 320, and the use requirements of the conical forging blanks 600 with different tapers can be met. When reaming the conical forging blank 600, the conical forging blank 600 is hung on the mandrel 200. The conical forging blank 600 rotates with the mandrel 200. The rotation interval is used to press and forge the conical forging blank 600 from above the mandrel 200 by the upper anvil. The supporting block 400 and the tapered block 500 move up and down with the floating supporting portion 320 under the extrusion of the conical forging blank 600. The inclination direction of the supporting groove 410 corresponds to that of the inclined surface 510. During the reaming process, the inner wall of the supporting groove 410 contacts the outer wall of the conical forging blank 600 to support the conical forging blank 600. At the same time, the inclined surface 510 abuts against the large end of the conical forging blank 600. The common positioning of the supporting groove 410 and the inclined surface 510 on the conical forging blank 600 can limit the swing of the conical forging blank 600 during the press-forging process and can improve the problem that the conical forging blank 600 is prone to distortion along the generatrix direction.

[0033] The reaming device for the tapered hole of the utility model's tapered forging. The mandrel is rotatably arranged at the top of the horse frame and extends horizontally. The floating base is arranged below the mandrel. The floating supporting part of the floating base can move up and down within a set range under the support of the elastic member. The tapered block is arranged at the top of the floating supporting part and is located at the large end of the forging blank of the tapered forging. The supporting block is arranged at the top of the floating supporting part, and the supporting groove of the supporting block corresponds to the inclination direction of the inclined surface of the tapered block. When reaming the tapered hole of the forging blank of the tapered forging, the forging blank of the tapered forging to be reamed is hung on the mandrel, and the forging blank of the tapered forging rotates with the mandrel. The rotation interval is used to press and forge the forging blank of the tapered forging from above the mandrel by the upper anvil. During the entire reaming process, the supporting block and the tapered block move up and down with the floating supporting part under the extrusion of the forging blank of the tapered forging. The inner wall of the supporting groove contacts the outer wall of the forging blank of the tapered forging to support the forging blank of the tapered forging. At the same time, the inclined surface of the tapered block abuts against the large end of the forging blank of the tapered forging. The common positioning of the supporting groove and the tapered block for the forging blank of the tapered forging can limit the swing of the forging blank of the tapered forging during the pressing and forging process and can improve the problem that the forging blank of the tapered forging is prone to distortion along the generatrix direction. Therefore, the utility model effectively overcomes some practical problems in the prior art and thus has high utilization value and practical significance.

[0034] The above embodiments merely illustrate the principles and effects of the utility model and are not used to limit the utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the utility model should still be covered by the claims of the utility model.

Claims

1. A reaming device for the tapered hole of a tapered forging, characterized in that include: Horse rack; A horse bar is rotatably arranged on the top of the horse frame and extends in the horizontal direction; A floating base is arranged below the horse bar and comprises an elastic member and a floating support portion extending upward, wherein the floating support portion can move up and down within a set range under the support of the elastic member; A support block is arranged on the top of the floating support portion and has a support groove for supporting the tapered forging blank, wherein the shape of the support groove matches the shape of the outer wall of the tapered forging blank to be expanded after final forming; A cone block is arranged on the top of the floating support portion and is located at the large end of the tapered forging blank. The cone block has an inclined surface, which abuts against the large end of the tapered forging blank, and the angle α between the inclined surface and the vertical surface is equal to the final angle β of the tapered hole to be formed; The supporting groove corresponds to the inclination direction of the inclined surface, so as to move up and down under the pressure of the tapered forging blank to jointly position the tapered forging blank.

2. The reaming device for the tapered hole of the tapered forging according to claim 1, wherein, The horse frame includes a first support plate and a second support plate arranged opposite to the first support plate, one end of the horse lever is rotatably arranged on the top of the first support plate, and the other end of the horse lever is rotatably arranged on the top of the second support plate.

3. The reaming device for the tapered hole of the tapered forging according to claim 2, wherein, A first fixing seat for fixing the first supporting plate is disposed on a side of the bottom of the first supporting plate away from the second supporting plate, and a second fixing seat for fixing the second supporting plate is disposed on a side of the bottom of the second supporting plate away from the first supporting plate.

4. The taper hole reaming device for the tapered forging according to claim 1, characterized in that, The floating base also includes a fixing portion arranged opposite to the floating supporting portion, one end of the elastic member is fixedly connected to the floating supporting portion, and the other end of the elastic member is fixedly connected to the fixing portion.

5. The reaming device for the tapered hole of the tapered forging according to claim 4, characterized in that, The floating base also includes a guide column, which is fixedly connected to one of the floating supporting part and the fixed part, and is slidably connected to the other of the floating supporting part and the fixed part.

6. The reaming device for the tapered hole of the tapered forging according to claim 5, characterized in that, The floating base includes a plurality of elastic members and a plurality of guide pillars, and the plurality of elastic members and the plurality of guide pillars are distributed on both sides of the floating supporting portion and the fixed portion.

7. The conical hole reaming device for the conical forging according to claim 4, characterized in that, The floating supporting portion and the fixing portion are both rectangular parallelepipeds.

8. The reaming device for the tapered hole of the tapered forging according to claim 4, characterized in that, The floating supporting portion and the fixed portion are both provided with steps on one side opposite to the other.

9. The reaming device for the tapered hole of the tapered forging according to claim 5, characterized in that, The floating supporting part and the fixing part are both provided with through holes for installing the guide pillars, and the guide pillars are clearance-matched with the through holes.

10. The reaming device for the tapered hole of the tapered forging according to claim 1, characterized in that, The support block is detachably connected to the floating support portion, and the cone block is detachably connected to the floating support portion.

Images