A lower support device for thread rolling of blanks in a thread rolling machine

Abstract

This utility model discloses a lower support device for thread rolling of blanks in a thread rolling machine, relating to the field of thread rolling machine technology. It solves the problem of poor stability of the support structure in thread rolling machines, which affects the processing accuracy of the product. It includes: a slidable base; two pressure plates; a sliding block, which is slidably mounted on the base and its sliding direction is perpendicular to the sliding direction of the base; a first adjusting bolt, one end of which is threadedly connected to the sliding block, and the other end of which is rotatably connected to a fixing block fixed to one end of the base; a support block; and a support plate, which is vertically fixed to the support block and in close contact with the vertical plane of the mounting part. The lower support device of this utility model has the advantages of flexible adjustment and high stability. The support plate is fixed to the top of the support block and in close contact with the vertical plane of the mounting part on one side of the support block, increasing the contact area between the two and providing stable support for the support plate, ensuring that the position of the blank does not easily change during the thread rolling process.

Description

Technical Field

[0001] This utility model relates to the field of thread rolling machine technology, and in particular to a lower support device for thread rolling of blanks in a thread rolling machine. Background Technology

[0002] Thread rolling machines are multi-functional cold extrusion forming machine tools. Within their rolling pressure range, they can perform thread rolling, straight knurling, and oblique knurling on workpieces in a cold state; roll spur gears, helical gears, and helical spline gears; straighten, reduce diameter, burnish, and perform various forming rolls. Cold thread rolling is an advanced non-cutting machining process that effectively improves the internal and surface quality of workpieces.

[0003] During thread rolling, the bolt blank is placed on a lower support structure, and then a pressing mechanism clamps the bolt blank. Two thread rolling wheels then perform the thread rolling process on the bolt blank. For bolt blanks of different sizes, the position of the support structure needs to be fine-tuned to adjust the processing position of the bolt blank. Because the stability of the lower support structure in existing thread rolling machines is not high enough, after the position adjustment, a certain amount of sliding clearance may exist, which may cause the support structure to wobble, affecting its stability and the processing accuracy of the product. Utility Model Content

[0004] The purpose of this invention is to solve the above-mentioned problems by designing a lower support device for thread rolling of blanks in a thread rolling machine, which solves the problem of poor stability of the support structure in the thread rolling machine, affecting the processing accuracy of the product.

[0005] The technical solution of this utility model to achieve the above objectives is a lower support device for thread rolling of blanks in a thread rolling machine, comprising:

[0006] Sliding base;

[0007] Two pressure plates are respectively disposed on both sides of the base to press the base tightly;

[0008] A sliding block is slidably disposed on the base, and the sliding direction is perpendicular to the sliding direction of the base;

[0009] The first adjusting bolt has one end threadedly connected to the sliding block and the other end rotatably connected to the fixing block fixed at one end of the base.

[0010] A support block having a mounting portion having a vertical plane;

[0011] A support plate is vertically fixed to the support block and is in close contact with the vertical plane of the mounting part. The top surface of the support plate is a horizontal support surface used to support the blank.

[0012] Preferably, at least one of the pressure plates is in a beveled fit with the base.

[0013] Preferably, one side of the base has a stepped fitting portion, and the other side has an inclined surface.

[0014] Preferably, the pressure plate has multiple bolt holes, and each bolt hole is equipped with a fastening bolt.

[0015] Preferably, a guide groove is formed on the base, and the sliding block is slidably disposed in the guide groove.

[0016] Preferably, a sliding adjustment block is provided in the guide groove. The adjustment block is used to adjust the gap between the sliding block and the inner wall of the guide groove. One side of the adjustment block is inclined to fit the inner wall of the guide groove.

[0017] Preferably, the fixing block is provided with a second adjusting bolt, one end of which is threadedly connected to the adjusting block, and the other end is rotatably connected to the fixing block.

[0018] Preferably, limiting plates are provided on both sides of the sliding block to prevent the sliding block from tilting upwards, and the limiting plates are fixed to the base by bolts.

[0019] Its advantages over existing technologies are:

[0020] The lower support device in this invention has the advantages of flexible adjustment and high stability. By moving the base and rotating the first adjusting bolt, the sliding block is moved, allowing adjustment of the support plate's front-to-back and left-to-right positions to accommodate thread rolling of bolt blanks of different sizes. After the base position is adjusted, the base is pressed down by the side pressure plates to prevent it from moving freely. The support plate is fixed to the top of the support block and makes close contact with the vertical plane of the mounting part on the support block, increasing the contact area and providing stable support for the support plate, ensuring that the position of the blank does not easily change during the thread rolling process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the lower support device for thread rolling of blanks in a thread rolling machine according to this utility model.

[0022] Figure 2 yes Figure 1 Another structural diagram from another perspective;

[0023] Figure 3 This is a structural diagram of the lower support device when the limiting plate is removed;

[0024] Figure 4This is a structural schematic diagram from another perspective when the lower support device removes the limiting plate.

[0025] In the figure, 1 is the base; 2 is the sliding block; 3 is the support block; 301 is the mounting part; 4 is the support plate; 401 is the support surface; 5 is the pressure plate; 6 is the limiting plate; 7 is the fixing block; 8 is the first adjusting bolt; 9 is the second adjusting bolt; 10 is the adjusting block; and 11 is the fastening bolt. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] like Figure 1 and Figure 2 As shown, a preferred embodiment of this utility model provides a lower support device for thread rolling of bolt blanks, used to support bolt blanks during thread rolling.

[0028] The lower support device mainly includes components such as base 1, sliding block 2, support block 3, support plate 4, pressure plate 5, limit plate 6, first adjusting bolt 8, second adjusting bolt 9, and adjusting block 10.

[0029] refer to Figures 1-4 A guide groove is formed in the middle area of ​​the upper part of the base 1, and the sliding block 2 can slide horizontally along the guide groove. There are two pressure plates 5, located on the left and right sides of the base 1, that is, at the front and rear ends of the guide groove. The function of the pressure plates 5 is to press down and tighten the base 1 after it slides into place to prevent it from sliding.

[0030] Grooves are formed on opposite sides of the bottom of the two pressure plates 5. A slope is formed on the left side of the base 1, and a stepped fitting part is formed on the right side. This fitting part engages with the grooves at the bottom of the pressure plates 5, thus limiting the right side of the base 1. Since the base 1 is slidably mounted on the thread rolling machine, pressing down the pressure plates 5 causes them to engage with the slope on the left side of the base 1, thus pressing the base 1 tightly.

[0031] In other embodiments, inclined surfaces can also be provided on both sides of the base 1, and two pressure plates 5 can cooperate with the inclined surfaces on both sides of the base 1 to press the base 1 tightly.

[0032] like Figure 1 As shown, each pressure plate 5 has four bolt holes, and each bolt hole contains a fastening bolt 11. The fastening bolt 11 is threaded into the body of the thread rolling machine. By rotating the fastening bolt 11, the pressure plate 5 presses the base 1 tightly.

[0033] The sliding direction of the base 1 is perpendicular to the sliding direction of the sliding block 2. Therefore, the front-back and left-right positions of the support plate 4 can be adjusted by sliding the base 1 and the sliding block 2 respectively.

[0034] refer to Figure 3 The adjusting block 10 is a wedge-shaped block that is slidably disposed in the guide groove. One side of the adjusting block 10 is an inclined surface that fits with the inner wall of the guide groove, and the other side is parallel to the side of the sliding block 2 and in close contact with the side of the sliding block 2.

[0035] The adjusting block 10 is inserted into the gap between one side of the sliding block 2 and the guide groove. The tightness of the sliding block 2 during sliding is adjusted by moving the adjusting block 10. When the sliding block 2 slides to its final position, sliding the adjusting block 10 makes the contact between the sliding block 2 and the adjusting block 10 tighter, thus preventing the sliding block 2 from moving. Conversely, when the tightness of the sliding block 2 is reduced, the sliding block 2 can slide to adjust its position.

[0036] The fixing block 7 is fixed to one side of the base 1, i.e., one end of the guide groove, by bolts. The sliding block 2 has a threaded hole of a certain depth. One end of the first adjusting bolt 8 is threadedly connected to the threaded hole on the sliding block 2, and the other end is rotatably connected to the fixing block 7. Similarly, the adjusting block 10 also has a threaded hole of a certain depth. One end of the second adjusting bolt 9 is threadedly connected to the threaded hole on the adjusting block 10, and the other end is rotatably connected to the fixing block 7.

[0037] The fixing block 7 has two notches, which correspond to the first adjusting bolt 8 and the second adjusting bolt 9, respectively. The first adjusting bolt 8 and the second adjusting bolt 9 have an annular groove, which respectively engages with the two notches on the fixing block 7, preventing the adjusting bolts from moving back and forth.

[0038] Rotating the first adjusting bolt 8 causes the sliding block 2 to slide back and forth along the guide groove. Rotating the second adjusting bolt 9 causes the adjusting block 10 to slide back and forth along the guide groove, thus adjusting the tightness of the sliding block 2. In other words, to adjust the position of the sliding block 2, the second adjusting bolt 9 must be tightened first, and the adjusting block 10 must be moved so that the sliding block 2 can move.

[0039] like Figure 1 , Figure 2 As shown, the limiting plate 6 has two pieces located on both sides of the sliding block 2. The two sides of the sliding block 2 are also stepped, which cooperate with the two limiting plates 6. The limiting plates 6 are fixedly installed on the base 1 by bolts. The two limiting plates 6 are respectively attached to the stepped structure on both sides of the sliding block 2 to limit the vertical movement of the sliding block 2 and prevent the sliding block 2 from tilting upward during thread rolling.

[0040] The width of the support block 3 is approximately the same as the distance between the two limiting plates 6. The support block 3 is fixed to the middle area of ​​the upper part of the sliding block 2 by bolts. The upper part of the support block 3 has a protruding mounting part 301, which is wedge-shaped. One side is a slope to avoid obstruction, and the other side is a vertical plane for fixing the support plate 4.

[0041] The support plate 4 is vertically mounted on the top of the support block 3, and the side of the support plate 4 is tightly attached to the vertical plane of one side of the mounting part 301. The mounting part 301 has multiple bolt holes. The bottom of the support plate 4 is tightly attached to the upper surface of the support block 3, and the side is tightly attached to the mounting part 301. Then it is fixed by bolts.

[0042] In this embodiment, the support plate 4 has three through holes on its lower side. Bolts pass through these holes and are threaded into nuts. These holes ensure close contact between the lower surface of the support plate 4 and the reference surface of the upper surface of the support block 3, and also facilitate the removal and replacement of the support plate 4 by loosening the bolts. This is because the support plate 4 will wear down after prolonged use.

[0043] The top surface of the support plate 4 has a horizontal support surface 401 on which the bolt blank is placed to maintain its horizontal position for subsequent thread rolling. The support block 3 and the support plate 4 can provide stable and convenient support for the bolt blank during the thread rolling process.

[0044] The above technical solution only embodies the preferred technical solution of this utility model. Any changes that may be made by those skilled in the art to certain parts of it embody the principle of this utility model and fall within the protection scope of this utility model.

Claims

1. A lower support device for thread rolling of blanks in a thread rolling machine, characterized in that, include: Sliding base (1); Two pressure plates (5) are respectively disposed on both sides of the base (1) for pressing the base (1); A sliding block (2) is slidably disposed on the base (1) and the sliding direction is perpendicular to the sliding direction of the base (1); The first adjusting bolt (8) has one end threadedly connected to the sliding block (2) and the other end rotatably connected to the fixing block (7) fixed at one end of the base (1). A support block (3) having a mounting portion (301) having a vertical plane formed thereon; The support plate (4) is vertically fixed on the support block (3) and is in close contact with the vertical plane of the mounting part (301). The top surface of the support plate (4) is a horizontal support surface (401) for supporting the blank.

2. The lower support device for thread rolling of blanks in a thread rolling machine according to claim 1, characterized in that, At least one of the pressure plates (5) is in a beveled fit with the base (1).

3. The lower support device for thread rolling of blanks in a thread rolling machine according to claim 2, characterized in that, The base (1) has a stepped fitting part on one side and an inclined surface on the other side.

4. The lower support device for thread rolling of blanks in a thread rolling machine according to claim 1, characterized in that, The pressure plate (5) has multiple bolt holes, and each bolt hole is equipped with a fastening bolt (11).

5. The lower support device for thread rolling of blanks in a thread rolling machine according to claim 1, characterized in that, A guide groove is formed on the base (1), and the sliding block (2) is slidably disposed in the guide groove.

6. The lower support device for thread rolling of blanks in a thread rolling machine according to claim 5, characterized in that, A sliding adjustment block (10) is provided in the guide groove. The adjustment block (10) is used to adjust the gap between the sliding block (2) and the inner wall of the guide groove. One side of the adjustment block (10) is inclined to fit the inner wall of the guide groove.

7. A lower support device for thread rolling of blanks in a thread rolling machine according to claim 6, characterized in that, The fixing block (7) is provided with a second adjusting bolt (9), one end of which is threadedly connected to the adjusting block (10), and the other end is rotatably connected to the fixing block (7).

8. The lower support device for thread rolling of blanks in a thread rolling machine according to claim 1, characterized in that, The sliding block (2) is provided with limiting plates (6) on both sides to prevent the sliding block (2) from tilting upwards. The limiting plates (6) are fixed to the base (1) by bolts.

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