Vertical adjusting mechanism for enveloping worm rotary milling machine

Abstract

The utility model relates to the field of rotary milling machines, in particular to a vertical adjusting mechanism for an enveloping worm rotary milling machine, which comprises an upright post, a support plate fixed on the top surface of the upright post, an oil cylinder fixed on the support plate, a sliding seat fixed at the end part of a piston rod of the oil cylinder, a tailstock fixed on the sliding seat and a tailstock fixed on the tailstock, the bottom end of the tailstock is rotationally connected with a rotating rod, a connecting part is fixed to the bottom end of the rotating rod, a plurality of elastic metal sheets are distributed on the top face of the connecting part at equal intervals, a gap is reserved between every two adjacent elastic metal sheets, and the elastic metal sheets are gradually expanded outwards from bottom to top. Through the arrangement of the elastic metal sheet and the like, on one hand, the pressing effect is improved, and the damage to the pressed place is greatly reduced due to the increase of the pressing area; on the other hand, the friction force between the elastic metal sheets and the inner wall of the insertion hole is greatly increased, and the stability of the cutter head in the high-strength machining process of the worm through the cutter head is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of rotary milling machines, and more particularly to a vertical adjustment mechanism for an envelope toroidal worm rotary milling machine. Background Technology

[0002] A worm milling machine is a high-precision, high-efficiency machining equipment primarily used for machining worm gears. Its working principle combines the characteristics of worm gear transmission and high-speed rotation. By using a cutting tool rotating at high speed, the worm gear transmission enables high-precision machining of the workpiece. Before machining the worm, the cutter head for machining the worm must first be fixed on the worktable. Then, a vertical adjustment mechanism is used to clamp the cutter head vertically to ensure the stability and accuracy of the machining process. Patent application CN202410440851.1 discloses a high-precision CNC vertical gear grinding machine. This patent uses a tailstock vertical adjustment mechanism to clamp the tooling of the fixed gear. While this achieves a clamping effect, for worm gear machining, the cutter head needs to cut deeper and with a larger cutting volume. Continuing to use the tailstock vertical adjustment mechanism in the aforementioned patent has the following drawbacks: 1) Clamping via a lead screw mechanism is insufficient; 2) Clamping the gear with a conical block involves only a small area at the bottom of the block, resulting in poor clamping effectiveness and potential damage to the clamped area; 3) Clamping via a conical block relies entirely on clamping force for fixation, leading to poor fixation and slippage, which affects machining. Therefore, there is an urgent need for a vertical adjustment mechanism that can achieve high-pressure clamping, good clamping effect, and good fixation. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a vertical adjustment mechanism for an enveloping toroidal worm gear milling machine, which solves the problems existing in the prior art. This utility model can not only achieve high pressure clamping, but also greatly improve the clamping and fixing effect, and is not easy to damage the clamped area.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vertical adjustment mechanism for an enveloping toroidal worm gear milling machine, comprising a column, a support plate fixed to the top surface of the column, a hydraulic cylinder fixed to the support plate, a sliding seat fixed to the end of the piston rod of the hydraulic cylinder, the sliding seat being slidably connected to the column, a tailstock fixed to the sliding seat, a rotating rod rotatably connected to the bottom end of the tailstock, a connecting part fixed to the bottom end of the rotating rod, and several elastic metal sheets evenly distributed on the top surface of the connecting part, with a gap between adjacent elastic metal sheets, the elastic metal sheets gradually opening outward from bottom to top.

[0007] Preferably, the connecting part includes a base plate and an annular part integrally formed with the base plate, and elastic metal sheets are distributed on the top surface of the annular part and integrally formed with the annular part.

[0008] Preferably, a tapered guide head, which is larger at the top and smaller at the bottom, is fixed on the bottom surface of the connecting part.

[0009] Preferably, the rotating rod is configured as a threaded rod, on which a matching nut is provided, the bottom surface of which can cover the top of the cavity surrounded by several elastic metal sheets.

[0010] Preferably, the nut is truncated cone-shaped.

[0011] Preferably, the left end of the support plate extends beyond the left end of the top surface of the column, and a hydraulic cylinder is fixed to the part of the support plate that extends beyond the top surface of the column.

[0012] Preferably, two slide rails are fixed on the left side of the column, and a slider that matches the slide rails is fixed on the right side of the sliding seat.

[0013] (III) Beneficial Effects

[0014] 1. This utility model achieves high-pressure clamping of the cutter head through the setting of the hydraulic cylinder, enhancing the clamping effect; through the setting of elastic metal sheets, on the one hand, during the process of squeezing the elastic metal sheets into the insertion hole, the elastic metal sheets will generate downward pressure on the inner wall of the insertion hole, and in turn, downward pressure on the connecting shaft. In this way, the bottom surface of the connecting shaft will also generate clamping force on the cutter head, greatly increasing the clamping area and thus enhancing the clamping effect. In addition, the increase in clamping area greatly reduces damage to the clamped area; on the other hand, when the elastic metal sheets are squeezed into the insertion hole, the elastic metal sheets will firmly press against the inner wall of the insertion hole, thereby greatly increasing the friction between the elastic metal sheets and the inner wall of the insertion hole, thus greatly improving the fixing effect between the rotating rod and the connecting shaft, thereby ensuring the stability of the cutter head during the high-intensity machining of the worm gear, and thus greatly improving the machining accuracy of the worm gear.

[0015] 2. This utility model sets the rotating rod as a threaded rod and matches it with a nut, wherein the nut acts as a cover to block the cutting oil and metal chips during the worm gear machining process, thereby ensuring the cleanliness of the gap between the metal elastic plate and the rotating rod. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall design of this utility model.

[0017] Figure 2 This is a schematic diagram of the rotating rod, connecting part, elastic metal sheet and gap of this utility model.

[0018] Figure 3 This is a schematic diagram of the connecting part, elastic metal sheet, gap and tapered guide head of this utility model.

[0019] Figure 4 This is a schematic diagram of the rotating rod, connecting part, elastic metal sheet, gap, tapered guide head and nut of this utility model.

[0020] Figure 5 This is a schematic diagram of the overall design of this utility model.

[0021] Figure 6 This is a schematic diagram of the cutter head, connecting shaft, and insertion hole of this utility model.

[0022] In the diagram: 1-Column, 2-Support plate, 3-Hydraulic cylinder, 4-Sliding seat, 5-Tailstock, 6-Rotor, 7-Connecting part, 8-Elastic metal sheet, 9-Gap, 10-Base plate, 11-Annular part, 12-Conical guide head, 13-Nut, 14-Slide rail, 15-Slider, 16-Cutter head, 17-Connecting shaft, 18-Socket. Detailed Implementation

[0023] The following will refer to the appendix in the embodiments of this utility model. Figure 1-6 The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0024] This utility model provides a technical solution: a vertical adjustment mechanism for an enveloping toroidal worm gear milling machine, comprising a column 1, a support plate 2 fixed to the top surface of the column 1, a hydraulic cylinder 3 fixed to the support plate 2, a sliding seat 4 fixed to the piston rod end of the hydraulic cylinder 3, the sliding seat 4 being slidably connected to the column 1, a tailstock 5 fixed to the sliding seat 4, a rotating rod 6 rotatably connected to the bottom end of the tailstock 5, a connecting part 7 fixed to the bottom end of the rotating rod 6, and several elastic metal sheets 8 evenly distributed on the top surface of the connecting part 7, with a gap 9 between adjacent elastic metal sheets 8, the elastic metal sheets 8 gradually opening outwards from bottom to top. During operation, the mechanism is adjusted as follows... Figure 6 The cutter head 16 shown is mounted on a worktable. A connecting shaft 17 is fixed at the center of the top surface of the cutter head 16. The connecting shaft 17 has an insertion hole 18. Since the cutter head 16 needs to rotate to process the worm gear during operation, a rotating rod 6 is required to ensure that the rotation of the cutter head 16 is not affected after the cutter head 16 is clamped. After the cutter head 16 is installed, the hydraulic cylinder 3 is started, and its piston rod extends, which causes the sliding seat 4 to descend, which in turn causes the tailstock 5 to descend, and then the rotating rod 6, the connecting part 7, and the elastic metal sheet 8 descend as a whole. During the descent, the connecting part 7 first enters the insertion hole 18, where the diameter of the connecting part 7 is equal to the inner diameter of the insertion hole 18. Then the elastic metal sheet 8 begins to enter the insertion hole 18. Due to the restriction of the insertion hole 18, the open elastic metal sheet 8 is forcefully squeezed into the insertion hole 18 until the elastic metal sheet 8 is completely squeezed into the insertion hole 18. At this time, the bottom of the connecting part 7 is pressed against the bottom of the insertion hole 18, and then the hydraulic cylinder 3 stops running. This invention utilizes the hydraulic cylinder 3 to achieve high-pressure clamping of the cutter head 16. During the process of pressing the elastic metal sheet 8 into the insertion hole 18, the elastic metal sheet 8 exerts downward pressure on the inner wall of the insertion hole 18, which in turn exerts downward pressure on the connecting shaft 17. This causes the bottom surface of the connecting shaft 17 to also exert a clamping force on the cutter head 16, significantly increasing the clamping area and thus enhancing the clamping effect. Furthermore, the increased clamping area greatly reduces damage to the clamped area. Once the elastic metal sheet 8 is pressed into the insertion hole 18, it firmly abuts against the inner wall of the insertion hole 18, significantly increasing the friction between the elastic metal sheet 8 and the inner wall of the insertion hole 18. This greatly improves the fixing effect between the rotating rod 6 and the connecting shaft 17, thereby ensuring the stability of the cutter head 16 during high-intensity machining of the worm gear and significantly improving the machining accuracy of the worm gear.

[0025] The connecting part 7 includes a base plate 10 and an annular part 11 integrally formed with the base plate 10. Elastic metal sheets 8 are distributed on the top surface of the annular part 11 and integrally formed with it. The rotating rod 6 is fixed at the center of the upper surface of the base plate 10. The base plate 10, the annular part 11, and the elastic metal sheets 8 are integrally formed, which enhances the overall strength and toughness of the structure. The number of elastic metal sheets 8 can be three.

[0026] A tapered guide head 12, which is larger at the top and smaller at the bottom, is fixed on the bottom surface of the connecting part 7. The tapered guide head 12 plays a good guiding role and greatly facilitates the insertion of the connecting part 7 into the socket 18.

[0027] The rotating rod 6 is configured as a threaded rod, with a matching nut 13 on it. The bottom surface of the nut 13 can cover the top of the cavity formed by several elastic metal plates 8. During the worm gear machining process, cutting oil and metal chips are generated, inevitably resulting in some adhering to the top of the elastic metal plates 8. After the worm gear machining is completed, as the hydraulic cylinder 3 pulls the elastic metal plates 8 upward away from the insertion hole 18, the elastic metal plates 8 slowly open outward. At this time, the cutting oil and metal chips accumulated on the top of the elastic metal plates 8 fall into the gap between the elastic metal plates 8 and the rotating rod 6. Cleaning the cutting oil and metal chips in this gap is very troublesome, and if not cleaned in time, it will seriously affect the next clamping process of the cutter head 16. Therefore, by configuring the rotating rod 6 as a threaded rod and matching... A nut 13 is provided, which acts as a cover to block cutting oil and metal chips during worm gear machining. After the cutter head 16 is tightened, the nut 13 is screwed downwards until it is blocked by the connecting shaft 17. The elastic metal sheet 8 is inserted into the insertion hole 18, and its upper surface is flush with the upper surface of the insertion hole 18. After the worm gear is machined, for safety reasons, the debris on the surface of the nut 13 is cleaned first, and then the nut 13 is screwed upwards to loosen it. Then the hydraulic cylinder 3 is activated to pull the elastic metal sheet 8 and the nut 13 upwards to their original position. This ensures that the gap between the elastic metal sheet 8 and the rotating rod 6 is clean.

[0028] The nut 13 is designed as a frustum shape. This design allows for good flow of cutting oil and metal chips during worm gear machining, preventing them from accumulating on the nut 13 and reducing the need for subsequent cleaning.

[0029] The left end of the support plate 2 extends beyond the left end of the top surface of the column 1, and the part of the support plate 2 that extends beyond the top surface of the column 1 is fixed with a hydraulic cylinder 3.

[0030] Two slide rails 14 are fixed on the left side of the column 1, and a slider 15 matching the slide rails 14 is fixed on the right side of the sliding seat 4. The slide rails 14 and slider 15 are used to achieve the sliding connection between the column 1 and the sliding seat 4.

[0031] Working principle: During operation, the cutter head 16 is installed on the worktable. A connecting shaft 17 is fixed at the center of the top surface of the cutter head 16. The connecting shaft 17 has an insertion hole 18. After the cutter head 16 is installed, the hydraulic cylinder 3 is started, and its piston rod extends, which causes the sliding seat 4 to descend, which in turn causes the tailstock 5 to descend, and then the rotating rod 6, the connecting part 7, and the elastic metal sheet 8 descend as a whole. During the descent, the connecting part 7 first enters the insertion hole 18, and the diameter of the connecting part 7 is equal to the inner diameter of the insertion hole 18. Then the elastic metal sheet 8 begins to enter the insertion hole 18. Due to the restriction of the insertion hole 18, the open elastic metal sheet 8 is forcefully squeezed into the insertion hole 18 until the elastic metal sheet 8 is completely squeezed into the insertion hole 18. At this time, the bottom of the connecting part 7 is pressed against the bottom of the insertion hole 18, and then the hydraulic cylinder 3 stops running. This invention utilizes the hydraulic cylinder 3 to achieve high-pressure clamping of the cutter head 16. During the process of pressing the elastic metal sheet 8 into the insertion hole 18, the elastic metal sheet 8 exerts downward pressure on the inner wall of the insertion hole 18, which in turn exerts downward pressure on the connecting shaft 17. This causes the bottom surface of the connecting shaft 17 to also exert a clamping force on the cutter head 16, significantly increasing the clamping area and thus enhancing the clamping effect. Furthermore, the increased clamping area greatly reduces damage to the clamped area. Once the elastic metal sheet 8 is pressed into the insertion hole 18, it firmly abuts against the inner wall of the insertion hole 18, significantly increasing the friction between the elastic metal sheet 8 and the inner wall of the insertion hole 18. This greatly improves the fixing effect between the rotating rod 6 and the connecting shaft 17, thereby ensuring the stability of the cutter head 16 during high-intensity machining of the worm gear and significantly improving the machining accuracy of the worm gear.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vertical adjustment mechanism for an envelope toroidal worm gear milling machine, characterized in that, The system includes a column (1), a support plate (2) fixed on the top surface of the column (1), a hydraulic cylinder (3) fixed on the support plate (2), a sliding seat (4) fixed at the piston rod end of the hydraulic cylinder (3), the sliding seat (4) being slidably connected to the column (1), a tail seat (5) fixed on the sliding seat (4), a rotating rod (6) rotatably connected to the bottom end of the tail seat (5), a connecting part (7) fixed at the bottom end of the rotating rod (6), and several elastic metal sheets (8) evenly distributed on the top surface of the connecting part (7), with a gap (9) between two adjacent elastic metal sheets (8), and the elastic metal sheets (8) gradually opening outward from bottom to top.

2. The vertical adjustment mechanism for an envelope toroidal worm gear milling machine according to claim 1, characterized in that, The connecting part (7) includes a base plate (10) and an annular part (11) integrally formed with the base plate (10). The elastic metal sheet (8) is distributed on the top surface of the annular part (11) and integrally formed with the annular part (11).

3. The vertical adjustment mechanism for an envelope toroidal worm gear milling machine according to claim 1, characterized in that, A tapered guide head (12) that is larger at the top and smaller at the bottom is fixed on the bottom surface of the connecting part (7).

4. The vertical adjustment mechanism for an envelope toroidal worm gear milling machine according to claim 1, characterized in that, The rotating rod (6) is configured as a threaded rod, and a matching nut (13) is provided on it. The bottom surface of the nut (13) can cover the top of the cavity formed by several elastic metal sheets (8).

5. A vertical adjustment mechanism for an enveloping toroidal worm gear milling machine according to claim 4, characterized in that, The nut (13) is configured as a frustum shape.

6. A vertical adjustment mechanism for an envelope toroidal worm gear milling machine according to claim 1, characterized in that, The left end of the support plate (2) extends beyond the left end of the top surface of the column (1), and the oil cylinder (3) is fixed to the part of the support plate (2) that extends beyond the top surface of the column (1).

7. A vertical adjustment mechanism for an enveloping toroidal worm gear milling machine according to claim 1, characterized in that, Two slide rails (14) are fixed on the left side of the column (1), and a slider (15) matching the slide rails (14) is fixed on the right side of the sliding seat (4).

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