Taper adjusting device for main shaft of thread rolling machine and thread rolling machine

Abstract

The utility model discloses a thread roller main shaft taper adjusting device which comprises a device body, a front-back through sliding groove is formed in the position, close to one side used for installing a main shaft component, of the device body, and the middle area of the sliding groove is concaved inwards to form an arc-shaped concave face. The side, close to the device body, of the rotating plate protrudes outwards to form an arc-shaped convex face matched with the arc-shaped concave face, the top face of the rotating plate is provided with a pressing face, and the pressing face is a part of a spherical face; the bottom of the pressing plate protrudes downwards to form an attaching part matched with the pressing face, and the attaching part is tightly attached to the pressing face. The pressing plate can exert obliquely downward pressure on the rotating plate, so that the side face and the bottom face of the rotating plate are tightly attached to the device body, the static friction force between the rotating plate and the device body is increased to prevent sliding, the two main shaft components are prevented from shaking, and improvement of the machining precision of the thread rolling machine is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of thread rolling machines, in particular to a thread rolling machine main shaft taper adjustment device and a thread rolling machine. Background Art

[0002] At present, thread rolling machines are usually used in the production of standard and non-standard parts such as screws, bolts, and through-wires. The main structure of the thread rolling machine consists of a machine body, a pair of thread rolling shafts, and a thread rolling shaft seat that positions the thread rolling shafts on the machine body. The thread rolling die is installed on the thread rolling shaft seat to start production. When the thread rolling machine is working, it can roll the product by controlling the two thread rolling shafts to approach the product to be processed located in the middle of the two thread rolling shafts.

[0003] A pair of rolling shafts of a thread rolling machine are usually parallel, but depending on the processing requirements of the product, the two rolling shafts are sometimes not parallel, but have a certain angle, so that the two rolling shafts are set in a conical shape. Therefore, it is necessary to adjust the taper between the two rolling shafts according to the processing requirements of different products. For example, the taper adjustment mechanism disclosed in the thread rolling machine with publication number CN116786732A uses the downward movement of the wedge block to control the rotation of the main shaft component, thereby adjusting the taper between the two main shaft components. However, this method will cause a large gap between the plate used to install and fix the main shaft component and the fuselage, and the contact area with the fuselage is reduced. The thread rolling machine may cause the two main shaft components to shake slightly when working, affecting the processing accuracy. Utility Model Content

[0004] The utility model aims to solve the above problems and designs a thread rolling machine spindle taper adjustment device, which solves the problem that there is a large gap between the spindle component and the machine body of the existing thread rolling machine and the vibration is easy to occur.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is a device for adjusting the taper of a main shaft of a thread rolling machine, comprising:

[0006] The device body has a front-to-back through-slot on one side of the device body close to the main shaft component, and the middle area of ​​the slot is inwardly concave to form an arc-shaped concave surface;

[0007] A rotating plate, the rotating plate is arranged in the slide groove and can slide horizontally along the slide groove, a side of the rotating plate close to the device body is outwardly protruded to form an arcuate convex surface matching the arcuate concave surface, and the top surface of the rotating plate has a pressing surface, which is a part of a spherical surface;

[0008] The pressing plate is arranged on the top of the rotating plate and is located between the device body and the rotating plate. The bottom of the pressing plate protrudes downward to form a fitting portion that matches the pressing surface. The fitting portion is tightly attached to the pressing surface and can press the rotating plate by applying downward pressure to the pressing plate.

[0009] Preferably, the arc-shaped convex surface has a limiting groove, a guide block is provided in the middle area of ​​the limiting groove, and the arc-shaped concave surface has a guide groove penetrating from front to back, and the guide block is slidably connected to the guide groove.

[0010] Preferably, two limit blocks are arranged in the guide groove, the limit blocks are fixed on the device body, and the guide block is located between the two limit blocks and is slidably connected to the limit groove.

[0011] Preferably, both ends of the guide groove are provided with fixing blocks, each fixing block is provided with a screw rod, one end of the screw rod extends into the guide groove and is threadedly connected to the limit block.

[0012] Preferably, a fixing plate is provided on the top of the device body, a gap is provided between the fixing plate and the pressing plate, at least one pressing bolt is threadedly connected to the fixing plate, and the pressing bolt abuts against the pressing plate.

[0013] Preferably, a pin is provided on the bottom surface of the slide groove, an arc-shaped groove is opened on the bottom of the rotating plate, and the upper end of the pin is inserted into the arc-shaped groove.

[0014] Preferably, a mounting plate is provided on the side of the rotating plate away from the arc-shaped convex surface, and two bearing seats are provided on the mounting plate, and the two bearing seats are rotatably connected to the main shaft components.

[0015] Preferably, an adjustment groove is provided on the mounting plate along the axial direction of the main shaft component, and one of the bearing seats is slidably connected to the adjustment groove so as to adjust the distance between the two bearing seats.

[0016] Preferably, arc-shaped holes are provided at both ends of the mounting plate, and adjusting bolts are provided in the arc-shaped holes, and the adjusting bolts are threadedly connected to the rotating plate.

[0017] The utility model also provides a thread rolling machine, comprising the thread rolling machine main shaft taper adjustment device as described above.

[0018] Compared with the prior art, the beneficial effects are:

[0019] The spindle taper adjustment device in the utility model is mainly used on a thread rolling machine, and is used to adjust the taper between the two spindles of the thread rolling machine to meet the processing requirements of different products. The arc-shaped convex surface on the outer side of the rotating plate is matched with the arc-shaped concave surface on one side of the device body. The rotating plate can slide relative to the slide groove, so that the rotating plate is relatively deflected to achieve the adjustment of the taper between the two spindles. By applying pressure to the pressure plate, the pressure plate applies oblique downward pressure to the rotating plate, and the bottom surface and the arc-shaped convex surface of the rotating plate will be tightly attached to the device body. By increasing the static friction force in this way, the rotating plate is prevented from sliding relative to each other, and finally it is ensured that the tapers of the two spindles will not shake after being adjusted, which is beneficial to the improvement of the processing accuracy of the thread rolling machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the spindle taper adjustment device in the utility model;

[0021] Figure 2 It is a structural schematic diagram of the device body in the shaft taper adjustment device;

[0022] Figure 3 It is a schematic diagram of the structure when the rotating plate and the pressure plate in the shaft taper adjustment device cooperate;

[0023] Figure 4 It is a schematic diagram of the structure of a rotating plate in a shaft taper adjustment device;

[0024] Figure 5 yes Figure 4 A structural diagram from another perspective;

[0025] Figure 6 It is a schematic diagram of the structure of the pressure plate in the shaft taper adjustment device;

[0026] Figure 7 It is a schematic diagram of the installation structure of the mounting plate and the spindle components.

[0027] In the figure, 1, device body; 101, slide groove; 102, arc-shaped concave surface; 103, guide groove; 2, rotating plate; 201, pressing surface; 202, arc-shaped convex surface; 203, limit groove; 3, mounting plate; 301, arc-shaped hole; 302, adjustment groove; 4, bearing seat; 5, main shaft component; 6, fixing plate; 7, pressing bolt; 8, pressing plate; 801, fitting part; 9, rotating shaft; 10, adjusting bolt; 11, fixing block; 12, screw; 13, limit block; 14, pin shaft; 15, guide block. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figure 1 As shown, a preferred embodiment of the utility model proposes a spindle taper adjustment device for a thread rolling machine. The spindle taper adjustment device is used on a thread rolling machine. Generally, two spindle taper adjustment devices are arranged on the thread rolling machine. The two spindle taper adjustment devices are respectively installed with a spindle component 5. The angle (i.e., taper) between the two spindle components 5 is adjusted through the spindle taper adjustment device.

[0030] refer to Figure 1-Figure 3 The spindle taper adjustment device mainly includes a device body 1, a rotating plate 2, a pressure plate 8 and other components, wherein a slide groove 101 is provided on the side of the device body 1, the slide groove 101 is through-through, and the rotating plate 2 is horizontally slidably connected with the slide groove 101. The middle of the slide groove 101 is inwardly recessed to form an arc-shaped concave surface 102, and the middle area of ​​one side of the rotating plate 2 is convex outwardly to form an arc-shaped convex surface 202. The curvature of the arc-shaped concave surface 102 is consistent with the curvature of the arc-shaped convex surface 202, so the arc-shaped convex surface 202 can completely fit with the arc-shaped concave surface 102 inside the slide groove 101. When the rotating plate 2 is in the slide groove 101, since the arc-shaped convex surface 202 fits with the arc-shaped concave surface 102 and both are curved surfaces, when the arc-shaped concave surface 102 and the arc-shaped convex surface 202 slide relative to each other, the moving track of the rotating plate 2 presents an arc shape.

[0031] When the rotating plates 2 on the two spindle taper adjustment devices slide, the taper between the spindle components 5 installed on the rotating plates 2 changes. Based on this principle, the taper of the two spindle components 5 can be adjusted.

[0032] like Figure 2 As shown, in order to limit the moving position of the rotating plate 2, a guide groove 103 that passes through from front to back is further provided on the arc-shaped concave surface 102 inside the slide groove 101, and a fixing block 11 is provided at each end of the guide groove 103. Each fixing block 11 is provided with a screw rod 12, one end of which extends into the guide groove 103, and the fixing block 11 is fixed to the device body 1 by screws. A limit block 13 is provided on each screw rod 12, and the limit block 13 is fixed to the device body 1 by screws, and the screw rod 12 is threadedly connected to the limit block 13, so the distance between the two screw rods 12 can be adjusted.

[0033] refer to Figure 4 , Figure 5A limiting groove 203 is provided on the arc convex surface 202 of the rotating plate 2, and a guide block 15 is provided in the middle of the limiting groove 203. When the rotating plate 2 is installed in the slide groove 101, the guide block 15 will be located between the two limiting blocks 13 and slidably connected to the guide groove 103, and at the same time, a part of the two limiting blocks 13 will be embedded in the limiting groove 203 and slidably connected to the limiting groove 203.

[0034] Since the screw rod 12 and the stop block 13 are threadedly connected, one end of the screw rod 12 may pass through the stop block 13 or may not pass through the stop block 13. When the screw rod 12 does not pass through the stop block 13, the guide block 15 can only slide back and forth between the two stop blocks 13; when the screw rod 12 completely passes through the stop block 13, the guide block 15 can only slide back and forth between the opposite ends of the two screw rods 12. For this reason, a blind hole is also provided on the guide block 15. When the screw rod 12 abuts against the guide block 15, it will be inserted into the blind hole to position the screw rod 12.

[0035] When the rotating plate 2 slides horizontally relative to the slide groove 101, the guide block 15 plays a guiding role, and the screw 12 or the limit block 13 will abut against the guide block 15. By adjusting the distance between the two screws 12, or the distance between the screw 12 and the limit block 13, the moving distance of the guide block 15 is limited, thereby limiting the sliding distance of the rotating plate 2 and limiting the adjustable taper between the two spindle components 5.

[0036] refer to Figure 4 The pressing plate 8 is arranged on the top of the rotating plate 2, and a pressing surface 201 is formed on the top surface of the rotating plate 2. The pressing surface 201 is a part of the spherical surface. The pressing surface 201 is inclined from the side where the arc-shaped convex surface 202 is located to the side away from the arc-shaped convex surface 202, and is concave toward the middle.

[0037] refer to Figure 6 The bottom of the pressing plate 8 protrudes outward to form a fitting portion 801, so that the entire pressing plate 8 is wedge-shaped. The shape of the fitting portion 801 is compatible with the shape formed by the depression of the pressing surface 201. Therefore, when the rotating plate 2 rotates relatively, it will not hinder the pressing plate 8, and the fitting portion 801 can slide relative to the pressing surface 201.

[0038] When downward pressure is applied to the pressure plate 8, the pressure plate 8 will also apply an oblique downward pressure to the rotating plate 2. This pressure will generate two component forces. One component force makes the arcuate convex surface 202 of the rotating plate 2 close to the arcuate concave surface 102 on the device body 1, and the other component force makes the rotating bottom surface close to the bottom surface of the slide groove 101. The two surfaces of the rotating plate 2 will be affected by static friction to prevent the rotating plate 2 from sliding at will. In this way, after the taper of the main shaft component 5 is adjusted, it will not change at will, and the main shaft component 5 will not shake at will when working.

[0039] like Figure 2 As shown, a fixing plate 6 is provided on the top of the device body 1, and four pressing bolts 7 are provided on the fixing plate 6. The four pressing bolts 7 are distributed at equal intervals and are threadedly connected to the fixing plate 6. By rotating the pressing bolts 7, the pressing bolts 7 will pass through the fixing plate 6 and abut against the pressure plate 8, applying downward pressure to the pressure plate 8, and then the pressure is transmitted to the rotating plate 2, so that the rotating plate 2 cannot move arbitrarily relative to the device body 1.

[0040] At the same time, an arc groove is opened in the middle part of the bottom surface of the rotating plate 2, and a pin shaft 14 is set at the corresponding position of the bottom surface of the slide groove 101. The upper end of the pin shaft 14 is inserted into the arc groove, so that the bottom surface of the rotating plate 2 can be positioned and the rotation angle of the rotating plate 2 can be limited.

[0041] refer to Figure 1 , Figure 7 A mounting plate 3 is provided on the side of the rotating plate 2 away from the arc-shaped convex surface 202. Two bearing seats 4 are provided on the mounting plate 3. The spindle component 5 is mounted on the two bearing seats 4 and is rotatably connected to the bearing seats 4 through bearings. An adjustment groove 302 is also provided on the mounting plate 3. The adjustment groove extends along the axial direction of the spindle component 5. One of the bearing seats 4 is slidably connected to the adjustment groove. Therefore, the distance between the two bearing seats 4 can be adjusted according to actual needs.

[0042] Arc holes 301 are provided near both ends of the mounting plate 3, and adjusting bolts 10 are provided in the arc holes 301. The adjusting bolts 10 are threadedly connected to the rotating plate 2 after passing through the arc holes 301, and the arc holes 301 extend up and down. A rotating shaft 9 is provided in the middle of the rotating plate 2, and the mounting plate 3 is rotatably connected to the rotating shaft 9. Therefore, when the horizontality of the main shaft component 5 needs to be adjusted, it is only necessary to loosen the adjusting bolts 10, and then the mounting plate 3 can be rotated. After the horizontality is adjusted, the adjusting bolts 10 can be tightened.

[0043] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the utility model. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the utility model and fall within the protection scope of the utility model.

Claims

1. A thread rolling machine spindle taper adjustment device, characterized in that: include: A device body (1), wherein a side of the device body (1) close to the main shaft component (5) is provided with a front-to-back through-going slide groove (101), and a middle area of ​​the slide groove (101) is inwardly recessed to form an arc-shaped concave surface (102); A rotating plate (2), the rotating plate (2) being arranged in the slide groove (101) and being capable of sliding horizontally along the slide groove (101), the rotating plate (2) having a side close to the device body (1) protruding outward to form an arcuate convex surface (202) matching the arcuate concave surface (102), the top surface of the rotating plate (2) having a pressing surface (201), and the pressing surface (201) being a part of a spherical surface; A pressing plate (8), wherein the pressing plate (8) is arranged on the top of the rotating plate (2) and is located between the device body (1) and the rotating plate (2); the bottom of the pressing plate (8) protrudes downward to form a fitting portion (801) that matches the pressing surface (201); the fitting portion (801) is tightly attached to the pressing surface (201) and can press the rotating plate (2) by applying downward pressure to the pressing plate (8).

2. The thread rolling machine spindle taper adjustment device according to claim 1, characterized in that: The arc-shaped convex surface (202) has a limiting groove (203), a guide block (15) is arranged in the middle area of ​​the limiting groove (203), the arc-shaped concave surface (102) has a guide groove (103) that passes through from front to back, and the guide block (15) is slidably connected to the guide groove (103).

3. The thread rolling machine spindle taper adjustment device according to claim 2, characterized in that: Two limit blocks (13) are arranged in the guide groove (103), the limit blocks (13) are fixed on the device body (1), and the guide block (15) is located between the two limit blocks (13) and is slidably connected to the limit groove (203).

4. The thread rolling machine spindle taper adjustment device according to claim 3, characterized in that: Both ends of the guide groove (103) are provided with fixing blocks (11), each fixing block (11) is provided with a screw rod (12), one end of the screw rod (12) extends into the guide groove (103) and is threadedly connected to the limit block (13).

5. The thread rolling machine spindle taper adjustment device according to claim 1, characterized in that: A fixing plate (6) is arranged on the top of the device body (1), a gap is provided between the fixing plate (6) and the pressing plate (8), at least one pressing bolt (7) is threadedly connected to the fixing plate (6), and the pressing bolt (7) is in contact with the pressing plate (8).

6. The thread rolling machine spindle taper adjustment device according to claim 1, characterized in that: The bottom surface of the slide groove (101) is provided with a pin shaft (14), and the bottom of the rotating plate (2) is provided with an arc-shaped groove, and the upper end of the pin shaft (14) is inserted into the arc-shaped groove.

7. The thread rolling machine spindle taper adjustment device according to claim 1, characterized in that: A mounting plate (3) is provided on the side of the rotating plate (2) away from the arc-shaped convex surface (202), and two bearing seats (4) are provided on the mounting plate (3), and main shaft components (5) are rotatably connected to the two bearing seats (4).

8. The thread rolling machine spindle taper adjustment device according to claim 7, characterized in that: An adjustment groove (302) is provided on the mounting plate (3) along the axial direction of the main shaft component (5), and one of the bearing seats (4) is slidably connected to the adjustment groove (302) so as to adjust the distance between the two bearing seats (4).

9. The thread rolling machine spindle taper adjustment device according to claim 7, characterized in that: Both ends of the mounting plate (3) are provided with arc-shaped holes (301), and adjustment bolts (10) are arranged in the arc-shaped holes (301), and the adjustment bolts (10) are threadedly connected to the rotating plate (2).

10. A thread rolling machine, characterized in that: It comprises the thread rolling machine spindle taper adjustment device as described in any one of claims 1-9.

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