Workpiece straightening tool

Abstract

The utility model relates to the technical field of workpiece straightening, and discloses a workpiece straightening tool which comprises a machining table, a plurality of rotary straightening mechanisms are installed at the upper end of the machining table on the same straight line in an embedded mode, a turnover mechanism is installed in the middle of the upper end of the machining table in an embedded mode, and an extrusion straightening mechanism is installed on one side of the upper end of the machining table. The rotary straightening mechanism comprises a set of straightening roller assemblies which are oppositely arranged, and the lower end of each straightening roller assembly is fixedly connected with a sliding block. According to the utility model, workpieces with different diameters can be straightened through the rotary straightening mechanism; the workpiece can be rotated in the axial direction through the turnover mechanism, so that the bent protruding part of the workpiece faces the extrusion straightening mechanism, the bent protruding part of the workpiece is extruded through an extrusion roller in the extrusion straightening mechanism, fine adjustment of the bent part of the workpiece is achieved, the workpiece is straight, and the quality of the workpiece is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of workpiece straightening technology, specifically a workpiece straightening fixture. Background Technology

[0002] Shafts are widely used in industries such as automobiles, textiles, and home appliances, and there are many different types of parts. During processing and use, they may bend and deform due to various reasons. In order to ensure the subsequent processing and normal use of the workpiece, it is necessary to straighten the bent parts. This requires the use of straightening fixtures.

[0003] Chinese patent discloses a straightening device for long-shaft workpieces (authorization announcement number CN219503478U). This patented technology uses a first motor to linearly adjust and detect the support plate, activates a first cylinder to make a dial indicator closely contact the long-shaft workpiece for detection, thus improving detection efficiency, activates a second cylinder to rotate a rotating plate on a fixed rod to press a rubber wheel against the long-shaft workpiece, and then activates a second motor to drive the rubber wheel and the long-shaft workpiece to rotate on double rollers for outer diameter measurement, thus improving the efficiency of measurement accuracy. However, its straightening quality is not high and cannot guarantee the complete straightness of the workpiece. Utility Model Content

[0004] The purpose of this invention is to provide a workpiece straightening fixture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A workpiece straightening fixture includes a processing table. Several rotary straightening mechanisms are embedded in the upper end of the processing table along a straight line, and a flipping mechanism is embedded in the middle of the upper end of the processing table. A compression straightening mechanism is installed on one side of the upper end of the processing table. Each rotary straightening mechanism includes a set of opposing straightening roller assemblies. A slider is fixedly connected to the lower end of each straightening roller assembly. A reverse lead screw is meshed through the upper inner side of one slider, and a forward lead screw is meshed through the upper inner side of the other slider. A guide rod is slidably connected through the lower inner sides of both sliders. The forward and reverse lead screws are connected, and a first bearing housing containing a bearing is installed at the ends of both the forward and reverse lead screws. A driven bevel gear is fixedly connected to one end of the reverse lead screw near the outer side of the first bearing housing. A driving bevel gear meshes with the outer side of the driven bevel gear, and a first motor is installed at the lower end of the driving bevel gear.

[0007] As a further embodiment of this utility model: the first motor, the first bearing seat and the guide rod are all fixed inside the processing table, and the straightening roller assembly passes through the upper end of the processing table.

[0008] As a further embodiment of this utility model: the straightening roller assembly includes a power box fixed on the slider, a second motor is installed inside the power box, a drive gear is fixedly connected to the output end of the second motor, a driven gear is meshed with the outer side of the drive gear, a rotating shaft is provided through the inner side of the driven gear, a second bearing seat containing bearings is installed at both the upper and lower ends of the driven gear on the outer side of the rotating shaft, and a straightening roller is installed at the top end of the rotating shaft.

[0009] As a further embodiment of this utility model: the flipping mechanism includes an upper roller and a lower roller located directly below the upper roller. A roller frame is installed on the upper outer side of the upper roller, a cylinder is installed on the upper end of the roller frame, a gantry is installed on the upper end of the cylinder, a drive shaft is fixedly connected to the rear end of the lower roller, a third bearing seat containing a bearing is installed on the rear end of the drive shaft, and a pulley assembly is installed in the middle of the outer side of the drive shaft. A drive motor is installed on the rear end of the lower side of the pulley assembly.

[0010] As a further embodiment of this utility model: the gantry is fixedly installed on the outer side of the upper end of the processing table, and the third bearing seat and the drive motor are both installed inside the processing table.

[0011] As a further embodiment of this utility model: the extrusion straightening mechanism includes a hydraulic cylinder, the output end of which is fixedly connected to a pressure roller frame, and a bracket is fixedly connected to the outside of the hydraulic cylinder. An extrusion roller is installed on the inner side of the pressure roller frame, and the bracket is fixed on the processing table.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention can straighten workpieces of different diameters through a rotary straightening mechanism; the flipping mechanism can rotate the workpiece axially so that the bent protrusion of the workpiece faces the extrusion straightening mechanism, and the extrusion roller in the extrusion straightening mechanism extrudes the bent protrusion of the workpiece, thereby achieving fine adjustment of the bent part of the workpiece, making the workpiece straight and ensuring the quality of the workpiece. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a workpiece straightening fixture;

[0015] Figure 2 This is a schematic diagram of a rotary straightening mechanism in a workpiece straightening fixture.

[0016] Figure 3 This is a cross-sectional structural diagram of a straightening roller assembly in a workpiece straightening fixture;

[0017] Figure 4This is a schematic diagram of a flipping mechanism in a workpiece straightening fixture.

[0018] Figure 5 This is a schematic diagram of the extrusion straightening mechanism in a workpiece straightening fixture.

[0019] In the diagram: 1. Processing table; 2. Rotary straightening mechanism; 21. Straightening roller assembly; 211. Power box; 212. Second motor; 213. Drive gear; 214. Straightening roller; 215. Driven gear; 216. Rotating shaft; 217. Second bearing seat; 22. First bearing seat; 23. Forward lead screw; 24. Guide rod; 25. Slider; 26. Reverse lead screw; 27. Driven bevel gear; 28. Driven bevel gear; 29. ​​First motor; 3. Tilting mechanism; 31. Upper support roller; 32. Lower support roller; 33. Pulley assembly; 34. Drive motor; 35. Drive shaft; 36. Third bearing seat; 37. Cylinder; 38. Roller frame; 39. Gantry; 4. Extrusion straightening mechanism; 41. Extrusion roller; 42. Pressure roller frame; 43. Hydraulic cylinder; 44. Support. Detailed Implementation

[0020] Please see Figures 1-5 In this embodiment of the utility model, a workpiece straightening fixture includes a processing table 1. Several rotating straightening mechanisms 2 are embedded and installed on the upper end of the processing table 1 in a straight line, and a flipping mechanism 3 is embedded and installed in the middle of the upper end of the processing table 1. A pressing straightening mechanism 4 is installed on one side of the upper end of the processing table 1.

[0021] exist Figure 1 and Figure 2In the rotary straightening mechanism 2, a set of oppositely arranged straightening roller assemblies 21 are included. Each straightening roller assembly 21 has a slider 25 fixedly connected to its lower end. The upper inner end of one slider 25 is meshed with a reverse lead screw 26, and the upper inner end of the other slider 25 is meshed with a forward lead screw 23. The lower inner ends of both sliders 25 are slidably connected to a guide rod 24. The forward lead screw 23 and the reverse lead screw 26 are connected, and both the forward lead screw 23 and the reverse lead screw 26 have a first bearing seat 22 containing a bearing installed at their ends. One end of the reverse lead screw 26 is fixedly connected to a driven bevel gear 27 near the outer side of the first bearing seat 22. The outer side of the driven bevel gear 27 is meshed with a driving bevel gear 28. A first motor 29 is installed at the lower end of the bevel gear 28. The first motor 29, the first bearing seat 22, and the guide rod 24 are all fixed inside the processing table 1, so that the forward lead screw 23 and the reverse lead screw 26 can rotate stably. The straightening roller assembly 21 passes through the upper end of the processing table 1, so that the two straightening roller assemblies 21 can move horizontally. The first motor 29 drives the active bevel gear 28 to rotate. The active bevel gear 28 meshes with the driven bevel gear 27 to drive the reverse lead screw 26 and the forward lead screw 23 to rotate together around the first bearing seat 22. This causes the two sliders 25 to move relative to or towards each other along the guide rod 24, thereby causing the two straightening roller assemblies 21 to move closer to or further away from each other, so that shaft workpieces of corresponding size can be straightened.

[0022] exist Figure 2 and Figure 3 In the process, the straightening roller assembly 21 includes a power box 211 fixed on the slider 25. A second motor 212 is installed inside the power box 211. A drive gear 213 is fixedly connected to the output end of the second motor 212. A driven gear 215 is meshed with the outer side of the drive gear 213. A rotating shaft 216 is provided through the inner side of the driven gear 215. Second bearing seats 217 containing bearings are installed at the upper and lower ends of the driven gear 215 on the outer side of the rotating shaft 216. A straightening roller 214 is installed at the top end of the rotating shaft 216. The two second bearing seats 217 are respectively installed on... Inside the power box 211, at the upper and lower ends, the straightening rollers 214 are located at the upper end of the outer side of the power box 211. When the workpiece to be straightened is clamped by the two straightening rollers 214, the second motor 212 drives the drive gear 213 to rotate. The drive gear 213 meshes with the driven gear 215, thereby causing the rotating shaft 216 to rotate around the second bearing seat 217 as the center, which in turn drives the straightening rollers 214 to rotate. When the two straightening rollers 214 rotate together, the workpiece to be straightened can be conveyed forward and straightened. The workpiece is straightened sequentially through multiple rotating straightening mechanisms 2.

[0023] exist Figure 1 and Figure 4In the process, the flipping mechanism 3 includes an upper idler roller 31 and a lower idler roller 32 located directly below the upper idler roller 31. An idler roller frame 38 is mounted on the upper outer end of the upper idler roller 31, and a cylinder 37 is mounted on the upper end of the idler roller frame 38. A gantry 39 is mounted on the upper end of the cylinder 37. A drive shaft 35 is fixedly connected to the rear end of the lower idler roller 32. A third bearing seat 36 containing a bearing is mounted on the rear end of the drive shaft 35, and a pulley assembly 33 is mounted on the middle of the outer side of the drive shaft 35. A drive motor 34 is mounted on the rear end of the lower side of the pulley assembly 33. The gantry 39 is fixedly mounted on the outer side of the upper end of the processing table 1, allowing the upper idler roller 31 to be stably suspended from the lower idler roller 32. Above 2; the third bearing seat 36 and the drive motor 34 are both installed inside the processing table 1. The drive shaft 35 can rotate stably through the third bearing seat 36. When the rotary straightening mechanism 2 releases the workpiece to be straightened, the cylinder 37 extends downward, driving the roller frame 38 and the upper roller 31 to move downward together, and the upper roller 31 and the lower roller 32 clamp the workpiece. Then, the drive motor 34 drives the pulley group 33 to rotate, and the pulley group 33 drives the drive shaft 35 to rotate around the third bearing seat 36, which in turn causes the lower roller 32 to rotate. The lower roller 32 drives the workpiece to rotate axially, so that the bent protruding part of the workpiece can be directed toward the extrusion straightening mechanism 4.

[0024] exist Figure 1 and Figure 5 In the process, the extrusion straightening mechanism 4 includes a hydraulic cylinder 43. The output end of the hydraulic cylinder 43 is fixedly connected to a pressure roller frame 42, and a bracket 44 is fixedly connected to the outside of the hydraulic cylinder 43. An extrusion roller 41 is installed on the inside of the pressure roller frame 42. The bracket 44 is fixed on the processing table 1. When the hydraulic cylinder 43 extends, it drives the pressure roller frame 42 and the extrusion roller 41 to move together toward the workpiece. The extrusion roller 41 extrudes the bent protruding part of the workpiece to further straighten the workpiece and make it flat.

[0025] The working principle of this utility model is as follows: When it is necessary to correct shaft-type workpieces, firstly, according to the diameter of the workpiece, the first motor 29 drives the active bevel gear 28 to rotate. The active bevel gear 28 meshes with the driven bevel gear 27 to drive the reverse lead screw 26 and the forward lead screw 23 to rotate together, so that the two straightening roller assemblies 21 move closer to each other, thereby adjusting the distance between the two straightening rollers 214 and clamping the workpiece through the two straightening rollers 214.

[0026] Next, the second motor 212 drives the drive gear 213 to rotate. The drive gear 213 meshes with the driven gear 215, causing the rotating shaft 216 and the straightening roller 214 to rotate together, conveying the workpiece to be straightened forward and straightening it. The workpiece is straightened sequentially through multiple rotating straightening mechanisms 2.

[0027] When the workpiece is still slightly bent, the workpiece is released by rotating the straightening mechanism 2 and the cylinder 37 is activated. The cylinder 37 drives the roller frame 38 and the upper roller 31 to move downward together, and the upper roller 31 and the lower roller 32 clamp the workpiece. Then the drive motor 34 is activated, and the drive motor 34 drives the pulley group 33 and the drive shaft 35 to rotate together, which in turn makes the lower roller 32 rotate. The lower roller 32 drives the workpiece to rotate axially, so that the bent protruding part of the workpiece is directed toward the extrusion roller 41.

[0028] Next, the workpiece is clamped by the rotating straightening mechanism 2. Then, the hydraulic cylinder 43 is started. The hydraulic cylinder 43 drives the pressure roller frame 42 and the extrusion roller 41 to move together toward the workpiece. The extrusion roller 41 extrudes the curved protrusion of the workpiece, thereby fine-tuning the curved part of the workpiece and making the workpiece straight.

[0029] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A workpiece straightening tool comprising a machining table (1), characterized in that, The upper end of the processing table (1) is embedded with several rotating straightening mechanisms (2) on the same straight line, and a turnover mechanism (3) is embedded in the middle of the upper end of the processing table (1), and an extrusion straightening mechanism (4) is installed on one side of the upper end of the processing table (1); the rotating straightening mechanism (2) comprises a set of oppositely arranged straightening roller assemblies (21), the lower end of each straightening roller assembly (21) is fixedly connected with a sliding block (25), wherein the inner side of one sliding block (25) is throughly engaged with a reverse screw rod (26) at the upper end, the inner side of the other sliding block (25) is throughly engaged with a positive screw rod (23) at the upper end, and the inner sides of the two sliding blocks (25) are throughly and slidably connected with a guide rod (24) at the lower end, the positive screw rod (23) and the reverse screw rod (26) are connected, and a first bearing seat (22) containing a bearing is installed at the end of the positive screw rod (23) and the reverse screw rod (26), wherein the end of the reverse screw rod (26) is fixedly connected with a driven bevel gear (27) near the outer side of the first bearing seat (22), the outer side of the driven bevel gear (27) is engaged with a driving bevel gear (28), and the lower end of the driving bevel gear (28) is provided with a first motor (29).

2. The workpiece straightening tool of claim 1, wherein, The first motor (29), the first bearing seat (22) and the guide rod (24) are fixed in the interior of the processing table (1), and the straightening roller assembly (21) penetrates the upper end of the processing table (1).

3. The workpiece straightening tool of claim 1, wherein, The straightening roller assembly (21) comprises a power box (211) fixed on the sliding block (25), a second motor (212) is installed in the interior of the power box (211), a driving gear (213) is fixedly connected to the output end of the second motor (212), a driven gear (215) is engaged with the outer side of the driving gear (213), a rotating shaft (216) is provided in the inner side of the driven gear (215), second bearing seats (217) containing bearings are installed on the upper and lower ends of the outer side of the rotating shaft (216), and a straightening roller (214) is installed at the top end of the rotating shaft (216).

4. The workpiece straightening tool of claim 1, wherein, The turnover mechanism (3) comprises an upper supporting roller (31) and a lower supporting roller (32) located directly below the upper supporting roller (31), a supporting roller frame (38) is installed at the upper end of the outer side of the upper supporting roller (31), a gas cylinder (37) is installed at the upper end of the supporting roller frame (38), a gantry (39) is installed at the upper end of the gas cylinder (37), the rear end of the lower supporting roller (32) is fixedly connected with a transmission shaft (35), the rear end of the transmission shaft (35) is provided with a third bearing seat (36) containing a bearing, a belt pulley group (33) is installed at the middle of the outer side of the transmission shaft (35), and a transmission motor (34) is installed at the lower side of the rear end of the belt pulley group (33).

5. The workpiece straightening tool of claim 4, wherein, The gantry (39) is fixedly installed on the outer side of the upper end of the processing table (1), and the third bearing seat (36) and the transmission motor (34) are installed in the interior of the processing table (1).

6. The workpiece straightening tool of claim 1, wherein, The extrusion straightening mechanism (4) comprises a hydraulic cylinder (43), the output end of the hydraulic cylinder (43) is fixedly connected with a pressure roller frame (42), a support (44) is fixedly connected on the outer side of the hydraulic cylinder (43), the inner side of the pressure roller frame (42) is provided with an extrusion roller (41), and the support (44) is fixed on the machining table (1).

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