Outer spiral trajectory smoothness machining device

Abstract

The utility model provides an external spiral trajectory smoothness processing device which comprises a fixedly arranged lower die holder and an upper die holder which rotates relative to the lower die holder and is located above the lower die holder, a vertical processing channel is fixedly arranged in the upper die holder, and a rolling ball located in the inner wall of the processing channel is further installed in a rolling mode. The rolling ball is partially accommodated in the processing channel; the machining device further comprises a pressing machine arranged over the upper die base, the output end of the pressing machine is fixedly connected with a pressing plate which ascends and descends, and a workpiece is placed in the machining channel and is pressed by the pressing plate to make contact with the rolling ball so that the rolling ball can roll in the outer spiral trajectory on the workpiece. According to the utility model, the problem of low efficiency caused by slow smoothness processing due to certain distortion of the outer spiral trajectory in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of external spiral ballistic smoothness processing equipment, in particular to an external spiral ballistic smoothness processing device. Background Art

[0002] The outer wall of some rod-shaped workpieces needs to be processed into an outer spiral trajectory arranged in a spiral shape, such as the steering screw of the automobile steering system. In the prior art, a gear hobbing machine can generally be used to process the outer spiral trajectory, which has the advantage of high precision. However, the outer spiral trajectory formed after processing has the problem of insufficient inner wall smoothness, and it is necessary to perform smoothness processing again. In the prior art, there are many ways to achieve smoothness processing on the arc inner wall, but because the outer spiral trajectory has a certain degree of distortion, it is necessary to proceed slowly during the processing, otherwise it will cause accidental damage to the outer spiral trajectory, and ultimately lead to low processing efficiency. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides an outer spiral trajectory smoothness processing device, which solves the problem in the prior art that the smoothness processing is slow and the efficiency is low due to certain distortion of the outer spiral trajectory.

[0004] According to an embodiment of the utility model, an external spiral ballistic smoothness processing device includes a fixed lower die seat, and an upper die seat that rotates relatively to the lower die seat and is located above the lower die seat, a vertical processing channel is fixedly arranged in the upper die seat and a rolling ball located in the inner wall of the processing channel is also rotatably installed, and the rolling ball is partially accommodated in the processing channel; it also includes a press arranged directly above the upper die seat, and the output end of the press is fixedly connected to a pressing plate that can be lifted up and down, the workpiece is placed in the processing channel and is pressed down by the pressing plate to contact the rolling ball and make the rolling ball roll in the external spiral trajectory on the workpiece.

[0005] In the above embodiment, a processing channel is set up for one end of the workpiece on which the outer spiral trajectory is set to enter, and the rolling ball is aligned with the entrance of the outer spiral trajectory (i.e., the junction of the outer spiral trajectory and the end face of the workpiece), and then the upper press presses downward to make the workpiece continue to move downward. During the process, the rolling ball rolls with the downward pressure and moves in the outer spiral trajectory, and at the same time, the upper die seat rotates relative to the lower die seat to allow smooth rolling. During the rolling process, the rolling ball rolls on the inner wall of the outer spiral trajectory, thereby making the inner wall smoother. In this way, the press can press down to achieve smoothness processing, so it is faster than the prior art, which solves the problem of slow smoothness processing and low efficiency due to certain distortion of the outer spiral trajectory in the prior art.

[0006] Furthermore, the lower die base is also provided with a lifting channel connected to the processing channel, and a lifting rod is vertically telescopically provided in the lifting channel.

[0007] Furthermore, the upper die base includes a reducing cylinder and a widening cylinder fixedly connected thereto. The reducing cylinder and the lower die base are rotatably arranged. A support platform is arranged between the reducing cylinder and the widening cylinder. A mounting ring located inside the widening cylinder is relatively fixedly connected to the support platform. The rolling ball is arranged in the mounting ring. The inner walls of the mounting ring and the reducing cylinder are connected and enclosed to form a processing channel.

[0008] Furthermore, a top shaft is telescopically arranged in the reducing cylinder, and a top shaft is also provided with a jacking hole, and a top rod can be pushed into the jacking hole.

[0009] Furthermore, the inner diameter of the reduced diameter cylinder is smaller than the inner diameter of the jacking passage and the lower end of the jacking shaft is also expanded outwardly to be provided with a support ring, which can overlap on the lower end surface of the reduced diameter cylinder.

[0010] Furthermore, a groove is recessed on the inner wall of the mounting ring for the rolling ball to be accommodated and rolled in.

[0011] Furthermore, a guide cylinder is fixedly connected to the mounting ring, and the guide cylinder allows the workpiece to pass through to enter the processing channel.

[0012] Furthermore, it also includes a mounting seat, the lower mold seat is fixedly connected to the mounting seat, and a pair of support cylinders located on both sides of the lower mold seat and vertically arranged are relatively fixedly connected to the mounting seat, and mounting rods are coaxially telescopically connected in the support cylinders, and the two mounting rods are also fixedly connected to the pressure plate.

[0013] Furthermore, the support tube is relatively fixedly connected to a limiting tube at its upper end, and a spring that abuts against the mounting rod is arranged inside the support tube.

[0014] Furthermore, the mounting seat is fixedly connected to a mounting plate, and the press is fixedly connected to the mounting plate.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The rolling ball rolls in the outer spiral trajectory by pressing down the press, so the inner wall of the outer spiral trajectory is rolled to make it smoother. The press can achieve smoothness processing by pressing down, so it is faster than the existing technology. It solves the problem of slow smoothness processing and low efficiency in the existing technology due to certain distortion of the outer spiral trajectory. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the enlarged local structure at center A;

[0019] In the above drawings:

[0020] Lower die base 1, upper die base 2, rolling ball 3, press machine 4, pressing plate 5, workpiece 6, lifting channel 7, ejector rod 8, reducing cylinder 9, enlarging cylinder 10, support platform 11, mounting ring 12, groove 13, bearing ring 14, ejector shaft 15, support ring 16, guide cylinder 17, pressure cover 18, mounting seat 19, support cylinder 20, mounting rod 21, limiting cylinder 22, spring 23, mounting plate 24, processing channel 25. DETAILED DESCRIPTION

[0021] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In an exemplary embodiment, Figure 1 , 2 As shown, this embodiment provides an external spiral ballistic smoothness processing device, which includes a fixed lower die base 1, and an upper die base 2 which rotates relatively to the lower die base 1 and is located above the lower die base 1, a vertical processing channel 25 is fixedly arranged in the upper die base 2 and a rolling ball 3 located in the inner wall of the processing channel 25 is also rollingly installed, and the rolling ball 3 is partially accommodated in the processing channel 25; it also includes a press 4 arranged directly above the upper die base 2, and the output end of the press 4 is fixedly connected to a pressing plate 5 which can be lifted up and down, and a workpiece 6 is placed in the processing channel 25 and is pressed downward by the pressing plate 5 to contact the rolling ball 3 and make the rolling ball 3 roll in the external spiral trajectory on the workpiece 6.

[0024] In the above embodiment, a processing channel 25 is provided for one end of the workpiece 6 on which an outer spiral trajectory is provided to enter, and the rolling ball 3 is aligned with the entrance of the outer spiral trajectory (i.e., the junction of the outer spiral trajectory and the end face of the workpiece 6), and then the upper press 4 presses downward to make the workpiece 6 continue to move downward. During the process, the rolling ball 3 rolls with the downward pressure and moves in the outer spiral trajectory, and at the same time, the upper die seat 2 rotates relative to the lower die seat 1 to allow the rolling to proceed smoothly. During the rolling process, the rolling ball 3 (the rolling ball 3 is a hard alloy ball with high hardness characteristics) rolls the inner wall of the outer spiral trajectory, thereby making the inner wall smoother. During the process, the press 4 can achieve smoothness processing by pressing downward, so it is faster than the existing technology, which solves the problem of slow smoothness processing and low efficiency due to certain distortion of the external spiral trajectory in the prior art; specifically, the pressing plate 5 is in a higher position initially, and the workpiece 6 has enough space to enter the processing channel 25, and the number and specific positions of the rolling balls 3 set can be adjusted according to the number and positions of the external spiral trajectories on the workpiece 6. For example, two rolling balls 3 are shown in this solution, corresponding to the two external spiral trajectories on the workpiece 6. Depending on the specific situation of the workpiece 6, it can also be one or more.

[0025] like Figure 1 , 2 As shown, in a further exemplary scheme, in order to facilitate the workpiece 6 to exit the processing channel 25, the lower die base 1 is also provided with a lifting channel 7 connected to the processing channel 25, and a push rod 8 is vertically telescopically arranged in the lifting channel 7, and a lifter (such as the same hydraulic equipment or cylinder as the above-mentioned press 4) is also correspondingly arranged below. During the resetting process of the upper press 4 (or after resetting), the push rod 8 is pushed upward to push upward, so that the workpiece 6 moves in the opposite direction (i.e., moves upward) to exit the processing channel 25, and then after being taken out, the next workpiece 6 is placed in to carry out the next round of operation.

[0026] like Figure 1 , 2As shown, in the detailed exemplary scheme, the upper die seat 2 includes a reducing cylinder 9 and a diameter enlarging cylinder 10 fixedly connected thereto, the reducing cylinder 9 and the lower die seat 1 are rotatably arranged, a support platform 11 is arranged between the reducing cylinder 9 and the diameter enlarging cylinder 10, and a mounting ring 12 located in the diameter enlarging cylinder 10 is relatively fixedly connected to the support platform 11, and the rolling ball 3 is arranged in the mounting ring 12, and the mounting ring 12 and the inner wall of the reducing cylinder 9 are connected and enclosed to form a processing channel 25, the mounting ring 12 is arranged for the rolling ball 3 to be installed, and a groove 13 for the rolling ball 3 to be accommodated and rolled is recessed on the inner wall of the mounting ring 12, and the mounting ring 12 provides a mounting base for the rolling ball 3, and the workpiece During the process of 6 being pressed down, the rolling ball 3 rolls in the groove 13, and at the same time, the rolling ball 3 moves under the guidance of the external spiral trajectory and causes the mounting ring 12 and the upper die seat 2 to rotate, while the workpiece 6 and the lower die seat 1 are relatively stationary under the action of the pressing plate 5 and the push rod 8, that is, the two ends of the workpiece 6 are respectively pressed against the pressing plate 5 and the push rod 8, and the upper die seat 2 drives the rolling ball 3 to rotate through the mounting ring 12, thereby realizing the rolling of the rolling ball 3 on the external spiral trajectory to make the inner wall smooth; in more detail, a bearing ring 14 located between the support platform 11 and the lower die seat 1 can also be installed outside the reducing cylinder 9, so that the upper die seat 2 and the lower die seat 1 can rotate more stably.

[0027] like Figure 1 , 2As shown, in a more detailed exemplary scheme, a top shaft 15 is telescopically arranged in the reducing cylinder 9, and the top shaft 15 is also provided with a lifting hole and the top rod 8 can be pushed into the lifting hole, that is, during processing, the top rod 8 provides support for the top shaft 15, the upper end of the top shaft 15 is against the lower end of the workpiece 6, the pressure plate 5 is against the lower end of the workpiece 6, and the top rod 8, the top shaft 15 and the workpiece 6 move downward synchronously during the downward pressing process, so that the workpiece 6 does not rotate during the processing, and the rotation of the upper die seat 2 drives the rolling ball 3 to rotate, so as to realize the rolling of the rolling ball 3 on the external spiral trajectory; in further detail, the inner diameter of the reducing cylinder 9 is smaller than the inner diameter of the lifting channel 7 and the lower end of the top shaft 15 is also expanded outwardly with a support ring 16, which can overlap on the lower end surface of the reducing cylinder 9, and the support ring 16 provided limits the top shaft 15 from continuing to move upward, that is, the support ring 1 6 is in contact with the end face of the reducing cylinder 9, and the top shaft 15 is in the highest position. At this time, the workpiece 6 is placed in and the outer spiral ballistic entrance on it is adjusted to be opposite to the rolling ball 3, and the pressing operation can be started; but after the pressing operation is completed, the press machine 4 drives the pressing plate 5 upward, and the push rod 8 lifts the top shaft 15 upward to make the workpiece 6 return to the position when it was placed in, and then the workpiece 6 is removed to carry out the next round of operation; in a further exemplary scheme, a guide cylinder 17 is also fixedly connected to the mounting ring 12, and the guide cylinder 17 is for the workpiece 6 to pass through to enter the processing channel 25. A channel is also provided above the mounting ring 12 to lengthen the processing channel 25, so that the workpiece 6 can be more stable after being placed in. More specifically, a pressure cover 18 is also fixedly connected to the lower end of the guide cylinder 17, and the pressure cover 18 is fixedly covered on the mounting ring 12 to provide protection for the mounting ring 12 and the rolling ball 3.

[0028] like Figure 1 , 2 As shown, in a further exemplary embodiment, the processing device also includes a mounting seat 19, the lower die seat 1 is fixedly connected to the mounting seat 19, and a pair of support cylinders 20 located on both sides of the lower die seat 1 and arranged vertically are relatively fixedly connected to the mounting seat 19, and a mounting rod 21 is coaxially telescopically connected in the support cylinder 20, and the two mounting rods 21 are also fixedly connected to the pressing plate 5, so that the pressing plate 5 can stably move up and down under the guidance of the mounting rod 21 and the support cylinder 20, and at the same time, the support cylinder 20 is relatively fixedly connected to a limit cylinder 2 located at its upper end. 2. A spring 23 is also arranged in the support cylinder 20 to resist the mounting rod 21. The spring 23 can assist the mounting rod 21 to move up and down under the drive of the pressure plate 5 through its deformation, and the limiting cylinder 22 plays a positioning role. When the pressure plate 5 is connected with the limiting cylinder 22, it means that the pressure plate 5 is pressed down into place, and the press 4 can be reversed to make the pressure plate 5 rise to avoid overpressure; more specifically, the mounting seat 19 is also fixedly connected with a mounting plate 24, and the press 4 is fixedly connected with the mounting plate 24, that is, the fixed installation of the press 4 is realized through the mounting plate 24.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An external spiral ballistic smoothness processing device, characterized in that: It includes a fixed lower die seat, and an upper die seat which rotates relatively with the lower die seat and is located above the lower die seat, a vertical processing channel is fixedly arranged in the upper die seat, and a rolling ball located in the inner wall of the processing channel is also rotatably installed, and the rolling ball is partially accommodated in the processing channel; it also includes a press machine arranged directly above the upper die seat, and the output end of the press machine is fixedly connected to a pressing plate which can be lifted up and down, a workpiece is placed in the processing channel and is pressed down by the pressing plate to contact the rolling ball and make the rolling ball roll in the outer spiral trajectory on the workpiece.

2. The outer spiral ballistic smoothness processing device according to claim 1, characterized in that: The lower die base is also provided with a lifting channel connected to the processing channel, and a lifting rod is vertically telescopically provided in the lifting channel.

3. The outer spiral ballistic smoothness processing device according to claim 2, characterized in that: The upper die seat includes a reducing cylinder and a widening cylinder fixedly connected thereto. The reducing cylinder is rotatably arranged with the lower die seat. A support platform is arranged between the reducing cylinder and the widening cylinder. A mounting ring located inside the widening cylinder is relatively fixedly connected to the support platform. The rolling ball is arranged in the mounting ring. The mounting ring and the inner wall of the reducing cylinder are connected and enclosed to form the processing channel.

4. The outer spiral ballistic smoothness processing device according to claim 3, characterized in that: A top shaft is telescopically arranged in the reducing cylinder, and the top shaft is also provided with a lifting hole, and the top rod can be pushed into the lifting hole.

5. The outer spiral ballistic smoothness processing device according to claim 4, characterized in that: The inner diameter of the reduced diameter cylinder is smaller than the inner diameter of the jacking channel, and the lower end of the jacking shaft is also expanded to be provided with a support ring, and the support ring can overlap the lower end surface of the reduced diameter cylinder.

6. The outer spiral ballistic smoothness processing device according to claim 3, characterized in that: The inner wall of the mounting ring is provided with a groove for the rolling ball to be accommodated and rolled.

7. The outer spiral ballistic smoothness processing device according to claim 3, characterized in that: The mounting ring is also fixedly connected with a guide cylinder, through which the workpiece passes to enter the processing channel.

8. The outer spiral ballistic smoothness processing device according to any one of claims 1 to 7, characterized in that: It also includes a mounting base, the lower mold base is fixedly connected to the mounting base, and the mounting base is relatively fixedly connected to a pair of support cylinders located on both sides of the lower mold base and vertically arranged, and a mounting rod is coaxially telescopically connected inside the support cylinder, and the two mounting rods are also fixedly connected to the pressure plate.

9. The outer spiral ballistic smoothness processing device according to claim 8, characterized in that: The support tube is relatively fixedly connected to a limiting tube at its upper end, and a spring that abuts against the mounting rod is arranged inside the support tube.

10. The outer spiral ballistic smoothness processing device according to claim 8, characterized in that: The mounting seat is also fixedly connected to a mounting plate, and the press is fixedly connected to the mounting plate.

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