Power assisting device for screw machining

Abstract

A power assisting device for screw machining comprises a driving seat and a tailstock which are correspondingly arranged on an equipment rack left and right, a rotating chuck is arranged on the right side of the driving seat and clamps a rotating center, a tailstock center is correspondingly arranged on the left side of the tailstock, the rotating center and the tailstock center abut against and position the two ends of a screw respectively, and a supporting mechanism is arranged between the driving seat and the tailstock. The supporting mechanism radially supports the circumferential surface of the lower part of the screw rod; the supporting mechanism comprises a base, supports are correspondingly arranged on the base front and back, a U-shaped groove is formed in the upper portion of each support, a fixing shaft is installed between the two opposite side walls of each U-shaped groove, a roller is arranged in the middle of each fixing shaft in a sleeving mode and freely rolls relative to each fixing shaft, and the circumferential face of each roller abuts against the surface of the polished rod section of the corresponding screw. According to the device, the supporting mechanism is arranged between the driving base and the tail base, the roller on the supporting mechanism makes contact with the surface of the polished rod section of the screw, the overall weight of the screw is supported, the screw and the rotating tip are prevented from rotating relatively during machining, and the product machining quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to a boosting device for screw machining. Background Art

[0002] Screw: a cylinder with spiral grooves cut on its outer surface or a cone with conical spiral grooves cut. The spiral grooves on the screw are rough and have burrs after machining, and usually need to be polished. A double-center structure is mostly used for positioning in the polishing equipment. The two center points on both sides respectively press and position the two ends of the screw. One of the center points has a rotary force and is a rotating center point. The screw is driven to rotate by the static friction force at the contact part between the rotating center point and the screw. The weight of the screw is supported by the two center points on both sides. When the screw is heavy, relative rotation easily occurs between the rotating center point and the screw, resulting in unstable screw rotation speed and affecting the product processing quality. Content of the Utility Model

[0003] In view of the deficiencies in the above problems, the utility model provides a boosting device for screw machining.

[0004] To achieve the above object, the utility model provides a boosting device for screw machining, which includes an equipment frame, a driving seat fixedly arranged at the left part of the equipment frame, and a tailstock slidably arranged at the right part of the equipment base. A rotary chuck is arranged on the right side of the driving seat and holds a rotating center point. A tailstock center point is correspondingly arranged on the left side of the tailstock. The rotating center point and the tailstock center point respectively press and position the two ends of the screw. A supporting mechanism is arranged between the driving seat and the tailstock, and the supporting mechanism forms radial support for the circumferential surface of the lower part of the screw.

[0005] The supporting mechanism includes a base. Front and rear corresponding brackets are arranged on the base. A U-shaped groove is machined on the upper part of the bracket. A fixed shaft is installed between the two opposite side walls of the U-shaped groove. A roller is sleeved in the middle of the fixed shaft, and the roller freely rolls relative to the fixed shaft. The circumferential surface of the roller abuts against the surface of the smooth rod section of the screw.

[0006] As a further improvement of the utility model, bearings are arranged between the roller and the fixed shaft. The bearings are arranged in pairs, and a shaft sleeve is installed on the fixed shaft between the bearings.

[0007] As a further improvement of the utility model, U-shaped grooves Ⅰ are symmetrically machined on the two opposite side walls of the U-shaped groove. The two ends of the fixed shaft are correspondingly passed through the U-shaped grooves Ⅰ and then locked by nuts. The U-shaped grooves Ⅰ are inclined in the vertical direction, and the distance between the U-shaped grooves Ⅰ on the front and rear two groups of brackets gradually increases from top to bottom.

[0008] As a further improvement of the utility model, two groups of the supporting mechanisms are provided to respectively support the smooth rod sections at both ends of the screw.

[0009] As a further improvement of the utility model, the height of the central axis of the fixed shaft is lower than that of the central axis of the rotating center.

[0010] As a further improvement of the utility model, guide rails are arranged horizontally on the equipment frame, the guide rails are arranged in pairs, the lower part of the tailstock is in sliding fit with the guide rails, an integrated guide block is arranged at the lower part of the base, the guide block is slidably arranged between the two guide rails, and the middle part of the base is connected to the equipment frame through a bolt assembly.

[0011] The beneficial effects of the utility model are as follows:

[0012] By arranging a support mechanism between the driving seat and the tailstock, the roller on the support mechanism contacts the surface of the smooth rod section of the screw rod, and the overall weight of the screw rod is supported by the support mechanism, preventing relative rotation between the screw rod and the rotating center during processing and ensuring the processing quality of the product; the position of the roller is adjustable, which is suitable for processing screw rods with different diameters. Description of the drawings

[0013] Figure 1 is the front view of a screw rod processing assisting device of the utility model;

[0014] Figure 2 is Figure 1 the view from direction A in

[0015] Figure 3 is the structural schematic diagram of the support mechanism 5.

[0016] In the figure: 1, equipment frame; 2, driving seat; 3, rotating chuck; 4, rotating center; 5, support mechanism; 51, base; 511, guide block; 52, bracket; 521, U-shaped groove; 522, U-shaped groove I; 53, fixed shaft; 54, roller; 55, bearing; 56, bushing; 6, screw rod; 61, smooth rod section; 7, guide rail; 8, tailstock center; 9, tailstock. Detailed implementation manners

[0017] As Figure 1As shown in the figure, a boosting device for screw machining according to the present utility model includes an equipment frame 1, a driving seat 2 fixedly arranged at the left part of the equipment frame 1, and a tailstock 9 slidably arranged at the right part of the equipment base 1. A rotating chuck 3 is arranged on the right side of the driving seat 2 and holds a rotating center 4. A tailstock center 8 is correspondingly arranged on the left side of the tailstock 9. The rotating center 4 and the tailstock center 8 respectively press and position both ends of the screw 6. A support mechanism 5 is arranged between the driving seat 2 and the tailstock 9. A guide rail 7 is arranged on the equipment frame 1 in the horizontal direction. The guide rails 7 are arranged in pairs. The lower part of the tailstock 9 is in sliding fit with the guide rails 7. A unified guide block 511 is arranged at the lower part of the base 51. The guide block 511 is slidably arranged between the two guide rails 7. The middle part of the base 51 is connected to the equipment frame 1 through a bolt assembly. The support mechanism 5 forms a radial support for the circumferential surface of the lower part of the screw 6. There are two groups of support mechanisms 5, which respectively support the smooth rod sections 61 at both ends of the screw 6;

[0018] The support mechanism 5 includes a base 51. Front and rear corresponding brackets 52 are arranged on the base 51. A U-shaped groove 521 is formed by machining at the upper part of the bracket 52. A fixed shaft 53 is installed and fixed between two opposite side walls of the U-shaped groove 521. U-shaped grooves Ⅰ522 are symmetrically machined on two opposite side walls of the U-shaped groove 521. Both ends of the fixed shaft 53 are passed through the U-shaped grooves Ⅰ522 in cooperation and then locked by nuts. The U-shaped grooves Ⅰ522 are inclined in the vertical direction. The distance between the U-shaped grooves Ⅰ522 on the front and rear two groups of brackets 52 gradually increases from top to bottom (see Figure 2 ), a roller 54 is sleeved on the middle part of the fixed shaft 53. Bearings 55 are arranged between the roller 54 and the fixed shaft 53. The bearings 55 are arranged in pairs. A shaft sleeve 56 is installed on the fixed shaft 53 between the bearings 55 (see Figure 3 ). The roller 54 freely rolls relative to the fixed shaft 53. The circumferential surface of the roller 54 abuts against the surface of the smooth rod section 61 of the screw 6. The central axis height of the fixed shaft 53 is lower than the central axis of the rotating center 4.

[0019] By arranging a support mechanism between the driving seat and the tailstock, the roller on the support mechanism contacts the surface of the smooth rod section of the screw, and the support mechanism supports the overall weight of the screw, preventing relative rotation between the screw and the rotating center during machining and ensuring the machining quality of the product; the position of the roller is adjustable, which is suitable for machining screws with different diameter sizes.

[0020] During specific use, for the convenience of understanding the present utility model, it is described in combination with the attached drawings:

[0021] The solution in this embodiment is mainly used for positioning during the grinding of the screw groove after the screw groove machining on the screw; during operation, the horizontal positions of the two groups of support mechanisms are adjusted according to the length of the screw, and then the base and the equipment frame are fixed through the bolt assembly. The two groups of support mechanisms are respectively adapted to the positions of the polished rod sections at both ends of the screw. The two ends of the screw are tightened by the rotary center and the tailstock center respectively. Then, the position of the fixed shaft is adjusted so that the surface of the drum abuts against the circumferential surface of the polished rod section of the screw; the rotary chuck drives the rotary center to rotate, and the screw rotates synchronously by using the friction force with the rotary center. The surface of the screw is polished by the grinding tool; during the rotation of the screw, relative rolling occurs between the polished rod section and the drum. The weight of the screw is mainly supported by the drum. The static friction force between the rotary center and the screw is sufficient to drive the screw to rotate, and relative rotation is not likely to occur. The rotation speed of the screw is stable, ensuring the processing quality; when machining the next screw of the same size, the screw can be directly placed on the two groups of support mechanisms, and then the two ends of the screw are tightened by the rotary center and the tailstock center.

[0022] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An assisting device for screw machining, characterized in that: It includes an equipment rack (1), a driving seat (2) fixedly arranged on the left part of the equipment rack (1), and a tailstock (9) slidably arranged on the right part of the equipment rack (1). A rotary chuck (3) is arranged on the right side of the driving seat (2) and holds a rotary center (4). A tailstock center (8) is correspondingly arranged on the left side of the tailstock (9). The two ends of a screw rod (6) are tightly pressed and positioned by the rotary center (4) and the tailstock center (8) respectively. A support mechanism (5) is arranged between the driving seat (2) and the tailstock (9), and the support mechanism (5) forms a radial support for the lower circumferential surface of the screw rod (6). The support mechanism (5) includes a base (51). Brackets (52) are arranged on the base (51) corresponding to each other in the front and rear. A U-shaped groove (521) is formed by machining on the upper part of the bracket (52). A fixed shaft (53) is installed between two opposite side walls of the U-shaped groove (521). A roller (54) is sleeved on the middle part of the fixed shaft (53). The roller (54) freely rolls relative to the fixed shaft (53). The circumferential surface of the roller (54) abuts against the surface of the smooth rod section (61) of the screw rod (6).

2. The assisting device for screw machining according to claim 1, characterized in that: Bearings (55) are arranged between the roller (54) and the fixed shaft (53). The bearings (55) are arranged in pairs. A shaft sleeve (56) is installed on the fixed shaft (53) between the bearings (55).

3. The assisting device for screw machining according to claim 1, characterized in that: U-shaped grooves Ⅰ (522) are symmetrically machined on two opposite side walls of the U-shaped groove (521). The two ends of the fixed shaft (53) are fitted through the U-shaped grooves Ⅰ (522) and then locked by nuts. The U-shaped grooves Ⅰ (522) are inclined in the vertical direction. The distance between the U-shaped grooves Ⅰ (522) on the front and rear two groups of brackets (52) gradually increases from top to bottom.

4. The assisting device for screw machining according to claim 1, characterized in that: Two groups of the support mechanism (5) are provided to support the smooth rod sections (61) at both ends of the screw rod (6) respectively.

5. The assisting device for screw machining according to claim 1, characterized in that: The central axis height of the fixed shaft (53) is lower than the central axis of the rotary center (4).

6. The assisting device for screw machining according to claim 1, wherein: A guide rail (7) is arranged on the equipment rack (1) in the horizontal direction. The guide rails (7) are arranged in pairs. The lower part of the tailstock (9) forms a sliding fit with the guide rail (7). An integral guide block (511) is arranged on the lower part of the base (51). The guide block (511) is slidably arranged between the two guide rails (7). The middle part of the base (51) is connected to the equipment rack (1) through a bolt assembly.

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