Inner taper thread rolling device

Abstract

The utility model provides an inner taper thread rolling device which comprises a rolling fixing shaft, an inclined hole is formed in the middle of the rolling fixing shaft, a sliding piston body is arranged in the inclined hole, and a rotating idler wheel is arranged at the end of the piston body. An oil inlet is formed in the tail part of the rolling fixing shaft, is communicated with the bottom of the inclined hole to form an oil path, and is connected with a hydraulic station through an oil pipe; during use, a workpiece is fixed on a machine tool chuck, the rolling fixing shaft is mounted on a tool rest through a fixing frame, and pressure oil is injected into the oil inlet through a hydraulic station, so that the piston body extends out in a sliding manner, the roller is pressed in the inner taper thread, and the machine tool is controlled to enable the roller to move along the spiral line of the inner taper thread for rolling. By means of the inner taper thread rolling device and the working method thereof, the problem that in the prior art, the thread root forming quality is poor can be effectively solved, and the product quality and the production efficiency are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of machining, concretely relates to a kind of inner taper thread rolling device. BACKGROUND

[0002] In the existing inner taper thread machining process, a common problem is that the thread tooth bottom forming quality is poor. This usually leads to insufficient strength and durability of the thread, thereby affecting the performance and service life of the final product. In order to improve this problem, additional strengthening treatment is usually required for the machined thread. SUMMARY

[0003] The main purpose of the utility model is to provide an inner taper thread rolling device to solve the problems in the above background technology.

[0004] To solve the above technical problems, the utility model adopts the technical scheme of: including rolling fixed shaft, the middle part of rolling fixed shaft is equipped with inclined hole, the inclined hole is equipped with sliding piston body, the end of piston body is equipped with rotating roller;

[0005] The tail of rolling fixed shaft is equipped with oil inlet, and the oil inlet is communicated with the bottom of inclined hole to form oil path, and the oil inlet is connected with hydraulic station through oil pipe;

[0006] When in use, the workpiece is fixed on the machine tool chuck, the rolling fixed shaft is installed on the tool rest through the fixing frame, the pressure oil is injected into the oil inlet through the hydraulic station, so that the piston body slides out, the roller is pressed in the inner taper thread, and the machine tool is controlled to move along the spiral line of the inner taper thread for rolling.

[0007] Preferably, the inclination angle of the inclined hole matches the angle of the inner taper thread on the workpiece.

[0008] Preferably, one end of the rolling fixed shaft is a positioning shaft, and the other end is a square shaft, the positioning shaft abuts against the workpiece, and the square shaft is used for being connected and fixed with the fixing frame through bolts.

[0009] Preferably, the inner wall above the inclined hole is equipped with a clamping groove, and the clamping groove is equipped with a check ring, and the check ring is used to limit the piston body to move in the inclined hole.

[0010] Preferably, the end of the piston body is equipped with a clamping groove, the clamping groove is transversely equipped with a penetrating pin hole, and the roller is fixed in the clamping groove for rotation by passing through the pin hole through the pin shaft.

[0011] Preferably, the outer wall of the piston body abuts against the inclined hole for sealing sliding through a sealing element.

[0012] Preferably, the roller is made of high-strength alloy steel, and the included angle of the outer shape of the roller is smaller than the included angle of the inner taper thread.

[0013] The utility model provides a kind of inner taper thread rolling device, and beneficial effect is:

[0014] 1. By precise angular matching and stable hydraulic drive, it ensures that the roller can contact and roll the internal tapered thread at the correct angle and pressure, thereby realizing high-quality thread root forming. Reduces subsequent processing needs: due to high-quality thread forming, the need for additional strengthening treatment is reduced, directly improving production efficiency and reducing costs.

[0015] 2. The device can complete high-quality thread rolling in one operation without the need for multiple adjustments or repeated operations, greatly shortening the processing time. High degree of automation: the movement of the piston body is automatically controlled through the hydraulic system, simplifying the operation process and improving production efficiency.

[0016] 3. The positioning shaft is inserted into the workpiece inner hole to provide an additional support point, ensuring that the roller remains stable during rolling to avoid quality problems caused by vibration or deviation. The stop ring limits the movement of the piston body: the stop ring is installed in the clamping groove to prevent the piston body from accidentally coming out or moving excessively, enhancing the safety and reliability of the equipment.

[0017] 4. The inclined angle of the inclined hole matches the internal tapered thread, making the device suitable for various internal tapered thread machining tasks of different angles, increasing the versatility of the equipment. Easy to replace and maintain: the design of the pin shaft fixing the roller facilitates disassembly and replacement, improving the maintainability of the equipment, reducing downtime and maintenance costs. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further described below in combination with the drawings and examples:

[0019] Figure 1 is the installation and use schematic diagram of the utility model;

[0020] Figure 2 is the front view of the utility model Figure 1 ;

[0021] Figure 3 is the local enlarged view a in the utility model Figure 2 ;

[0022] Figure 4 is the structure view of the rolling fixed shaft of the utility model;

[0023] In the drawing: machine tool chuck 1; workpiece 2; internal tapered thread 201; fixed frame 3; rolling fixed shaft 4; positioning shaft 401; inclined hole 402; square shaft 403; oil way 404; oil inlet 405; clamping groove 406; piston body 5; sealing element 501; tool holder 6; stop ring 7; roller 8; pin shaft 9. DETAILED DESCRIPTION

[0024] As Figures 1-4As shown, a kind of internal taper thread rolling device, including rolling fixed shaft 4, the middle part of rolling fixed shaft 4 is equipped with inclined hole 402, sliding piston body 5 is equipped in inclined hole 402, piston body 5 end is equipped with rotating roller 8;

[0025] Rolling fixed shaft 4 tail is equipped with oil inlet 405, oil inlet 405 is communicated with the bottom of inclined hole 402 to form oil channel 404, oil inlet 405 is connected with hydraulic station by oil pipe;

[0026] When using, workpiece 2 is fixed on machine tool chuck 1, rolling fixed shaft 4 is installed on tool rest 6 by fixed frame 3, and pressure oil is injected into oil inlet 405 by hydraulic station, so that piston body 5 slides and extends, and roller 8 is pressed in internal taper thread 201, and machine tool is controlled to make roller 8 move along the helix of internal taper thread 201 to roll.

[0027] It improves processing efficiency, can also guarantee the quality and precision of thread, and is suitable for occasions needing high-precision internal taper thread processing.

[0028] Preferably, the inclination angle of inclined hole 402 matches the angle of internal taper thread 201 on workpiece 2.

[0029] The inclination angle of inclined hole 402 is consistent with the angle of internal taper thread 201, so that when piston body 5 pushes roller 8 to extend, the roller can accurately adhere to the internal taper thread, ensuring the rolling quality.

[0030] Preferably, one end of rolling fixed shaft 4 is positioning shaft 401, and the other end is square shaft 403, positioning shaft 401 abuts against workpiece 2, and square shaft 403 is used for being connected and fixed with fixed frame 3 by bolts.

[0031] Positioning shaft 401 is inserted into the inner hole of workpiece 2, provides additional support point, ensures that the entire device remains stable when roller 8 rolls internal taper thread 201, effectively reduces vibration and deviation in the processing process, and improves processing precision. By abutting against the inside of workpiece, positioning shaft helps to achieve accurate positioning between rolling fixed shaft and workpiece. This not only ensures that the roller can accurately move along the helix of the thread, but also makes each operation more consistent.

[0032] Square shaft 403 is used for being connected and fixed with fixed frame 3 by bolts. It is convenient for installation and disassembly, and also ensures that the rolling fixed shaft is stable during the entire processing process. Through firm connection with the fixed frame, square shaft enhances the structural stability of the entire device, prevents position deviation or loosening due to external force, which is very important for maintaining processing quality.

[0033] Preferably, the inner wall above inclined hole 402 is equipped with clamping groove 406, and check ring 7 is equipped in clamping groove 406, check ring 7 is used for limiting piston body 5 to move in inclined hole 402.

[0034] By limiting the range of movement of the piston body, potential operational risks such as the risk of components flying out are avoided. The presence of the stop ring allows the piston body to move within a precisely controlled range, which helps to maintain uniform pressure exerted by the roller 8 on the internal tapered thread 201, thereby improving machining accuracy. Reasonable limiting design reduces abnormal friction and collision between components, which helps to prolong the service life of the equipment and its components.

[0035] Preferably, the end of the piston body 5 is provided with a clamping groove, and a through pin hole is transversely arranged in the clamping groove. The roller 8 is fixed in the clamping groove for rotation by means of a pin shaft 9 penetrating the pin hole.

[0036] The pin shaft 9 penetrates the pin hole to fix the roller 8 in the clamping groove of the piston body 5, so that the roller 8 can rotate freely within a certain range. The pin shaft not only provides physical connection, but also ensures that the roller can operate efficiently in a low-friction manner, thereby achieving uniform rolling of the internal tapered thread 201.

[0037] Preferably, the outer wall of the piston body 5 is sealed against sliding in the inclined hole 402 by means of a sealing element 501. The sealing element 501 ensures sealing and prevents leakage of hydraulic oil.

[0038] Preferably, the roller 8 is made of high-strength alloy steel, and the included angle of the outer shape of the roller 8 is smaller than the included angle of the internal tapered thread 201. This prevents interference with the thread flanks during rolling.

[0039] The above embodiments are only preferred technical solutions of the present application, and should not be regarded as limiting the present application. The protection scope of the present application should be based on the technical solutions recited in the claims, including equivalent replacement solutions of the technical features recited in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present application.

Claims

1. An internal taper thread rolling apparatus characterized by: The rolling fixing shaft (4) is provided with an inclined hole (402) in the middle part, and a sliding piston body (5) is arranged in the inclined hole (402), and the end of the piston body (5) is provided with a rotating roller (8); The rolling fixing shaft (4) is provided with an oil inlet (405) at the tail, the oil inlet (405) is communicated with the bottom of the inclined hole (402) to form an oil channel (404), and the oil inlet (405) is connected with the hydraulic station through an oil pipe; In use, the workpiece (2) is fixed on the machine tool chuck (1), the rolling fixing shaft (4) is installed on the tool holder (6) through the fixing frame (3), the pressure oil is injected into the oil inlet (405) through the hydraulic station, so that the piston body (5) slides out, the roller (8) is pressed in the inner tapered thread (201), and the machine tool is controlled to move along the spiral line of the inner tapered thread (201) to roll.

2. The apparatus of claim 1 wherein: The inclination angle of the inclined hole (402) matches the angle of the inner tapered thread (201) on the workpiece (2).

3. The apparatus of claim 1 wherein: One end of the rolling fixing shaft (4) is a positioning shaft (401), and the other end is a square shaft (403), the positioning shaft (401) abuts against the workpiece (2), and the square shaft (403) is used for being connected and fixed with the fixing frame (3) through bolts.

4. The apparatus of claim 1 wherein: The inner wall above the inclined hole (402) is provided with a clamping groove (406), and the clamping groove (406) is provided with a check ring (7), and the check ring (7) is used for limiting the piston body (5) to move in the inclined hole (402).

5. The apparatus of claim 1 wherein: The end of the piston body (5) is provided with a clamping groove, the clamping groove is transversely provided with a penetrating pin hole, and the roller (8) is fixed in the clamping groove and rotates through the pin shaft (9) penetrating the pin hole.

6. The apparatus of claim 1 wherein: The outer wall of the piston body (5) is sealed and slides in the inclined hole (402) through the sealing element (501).

7. The apparatus of claim 1 wherein: The roller (8) is made of high-strength alloy steel, and the included angle of the outer shape of the roller (8) is smaller than that of the inner tapered thread (201).

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