Correcting mechanism for slender shaft parts

Abstract

A correcting mechanism for slender shaft parts comprises a correcting mechanism support used for connecting the correcting mechanism with an inductor moving mechanism on induction quenching equipment. The pneumatic clamping device is fixed on the correction mechanism support, two clamping arms are arranged on the pneumatic clamping device, each clamping arm has an initial position and a clamping position, and the two clamping arms located at the clamping positions are parallel to each other and symmetrically distributed on the two sides of the center of a workpiece; the correction mechanism supporting arm is fixed to the clamping arm, a roller frame is arranged on the correction mechanism supporting arm, two rollers capable of freely rotating are installed on the roller frame side by side, and the axes of the rollers are parallel to the axis of the workpiece; when the two clamping arms are located at the clamping positions, the rolling wheels on the two rolling wheel frames clamp the workpiece from the two opposite sides of the workpiece. According to the utility model, jumping generated during rotation of the workpiece can be limited, so that a gap between the inductor and the workpiece is always kept consistent, and the inductor can move along with the inductor.

Description

A correction mechanism for slender shaft parts Technical Field

[0001] This utility model belongs to the field of induction heat treatment equipment, and specifically relates to a correction mechanism for slender shaft parts. Background Technology

[0002] Currently, vertical induction hardening equipment is generally used for induction hardening of slender shaft parts. While induction hardening machine tools have undergone significant improvements with advancements, when performing induction hardening on slender shaft parts on vertical induction hardening equipment, the workpiece experiences considerable movement due to its thinness and length during rotation and the influence of centrifugal force. In such cases, when using an inductor for scanning hardening, the workpiece may collide with the inductor, causing damage and potentially leading to safety accidents.

[0003] In current vertical induction hardening equipment, some mechanisms such as guide rollers or templates are used to limit workpiece runout. However, these are all unidirectional and cannot completely limit workpiece runout. If they are too close, they can affect the workpiece's rotation speed, and they cannot move with the inductor. Therefore, these guide rollers or templates have some obvious shortcomings and drawbacks in use. In conclusion, it is necessary to effectively limit the runout of slender shaft parts during induction hardening. Summary of the Invention

[0004] The purpose of this invention is to provide a correction mechanism for slender shaft parts. When slender shaft workpieces are induction hardened, this correction mechanism can limit the runout generated by the workpiece during rotation, thereby ensuring that the gap between the inductor and the workpiece remains consistent and can move with the inductor.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a correction mechanism for slender shaft parts, including a correction mechanism support for connecting the correction mechanism to the sensor moving mechanism on the induction hardening equipment.

[0006] A pneumatic clamp is fixed on the bracket of the correction mechanism. The pneumatic clamp has two clamping arms with an initial position and a clamping position. The two clamping arms in the clamping position are parallel to each other and symmetrically distributed on both sides of the center of the workpiece.

[0007] The correction mechanism support arm is fixed on the clamping arm. The correction mechanism support arm is equipped with a roller frame, on which two freely rotating rollers are installed side by side. The axis of the rollers is parallel to the axis of the workpiece. When the two clamping arms are in the clamping position, the rollers on the two roller frames form a clamping action on the workpiece from the opposite sides of the workpiece.

[0008] Furthermore, the initial position and the clamping position of the clamping arm form a 90° angle.

[0009] Furthermore, it also includes an adjusting screw, which passes through the support arm of the correction mechanism and is threadedly connected to the support arm of the correction mechanism. The front end of the adjusting screw is rotatably connected to the rolling frame, and the axial limiting structure between the adjusting screw and the rolling frame provides axial limiting for the adjusting screw.

[0010] Specifically, the axial limiting structure includes a shoulder disposed at the front end of the adjusting screw and a retaining ring sleeved in the annular groove at the front end of the adjusting screw; or, the axial limiting structure includes a shoulder disposed at the front end of the adjusting screw and a pin radially passing through the front end of the adjusting screw.

[0011] Alternatively, an adjusting nut is provided on the arm of the correction mechanism at the position for the adjusting screw to pass through, and the adjusting nut has a threaded hole that mates with the adjusting screw.

[0012] Furthermore, the support arm of the correction mechanism is provided with a through hole and a mounting hole that is perpendicularly connected to the through hole. The adjusting nut is cylindrical and its length is greater than the depth of the mounting hole, so that the adjusting nut inserted into the through hole through the mounting hole can be locked in the opening of the mounting hole. The adjusting nut is provided with a threaded hole perpendicular to its length direction, and the threaded hole is coaxially arranged with the through hole.

[0013] Alternatively, the correction mechanism arm may have a through hole, and the adjusting nut may be forcibly installed in the through hole on the correction mechanism arm.

[0014] Furthermore, a guide mechanism is also provided between the rolling frame and the correction mechanism arm.

[0015] Furthermore, the guiding mechanism includes a self-lubricating copper sleeve and a guide rod. The self-lubricating copper sleeve is fixed on the support arm of the correction mechanism, and the guide rod passes through the self-lubricating copper sleeve and slides with it.

[0016] Furthermore, the guide mechanism is provided in two sets, distributed on both sides of the adjusting screw.

[0017] The beneficial effects of this utility model are: 1. This utility model can hold the workpiece by the correction mechanism support arms on both sides, thereby limiting the jumping of the workpiece when rotating, so that the gap between the sensor and the workpiece is always kept consistent; in addition, the correction mechanism bracket can be connected to the sensor moving mechanism, so that the whole correction mechanism can move together with the sensor.

[0018] 2. This utility model uses a handwheel to control the adjusting screw to change the distance between the rollers on both sides of the correction mechanism, making the mechanism adaptable to workpieces of different diameters and controlling the distance between the rollers and the workpiece, thus increasing the applicability of the correction mechanism.

[0019] 3. This utility model has the characteristics of simple structure, safe and reliable use, easy adjustment and operation, and does not affect the structure of the original vertical induction hardening equipment. Attached Figure Description

[0020] Figure 1 is a schematic diagram of the correction mechanism described in this utility model;

[0021] Figure 2 is a front view of the correction mechanism described in this utility model;

[0022] Figure 3 is a top view of the correction mechanism described in this utility model;

[0023] Figure 4 is a left view of the correction mechanism described in this utility model;

[0024] Figure 5 is a schematic diagram of the axial limiting structure on the adjusting screw in the correction mechanism of this utility model;

[0025] The markings in the diagram are: 1. Correction mechanism support, 2. Pneumatic clamp, 201. Clamping arm, 3. Connecting plate, 4. Correction mechanism support arm, 5. Self-lubricating copper sleeve, 6. Guide rod, 7. Adjusting nut, 8. Handwheel, 9. Adjusting screw, 901. Shoulder, 902. Annular groove, 10. Locking nut, 11. Roller frame, 12. Roller shaft, 13. Roller, 14. Retaining ring. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention in any way.

[0027] Example 1

[0028] Referring to Figures 1-4, a correction mechanism for slender shaft parts includes a correction mechanism support 1, a pneumatic clamp 2, a correction mechanism arm 4, a roller frame 11, and rollers 13.

[0029] The calibration mechanism bracket 1 serves as the support structure for the calibration mechanism. It is installed on the vertical induction hardening equipment and connected to the sensor moving mechanism, which can drive the entire calibration mechanism and the sensor to move together.

[0030] A pneumatic clamp 2 is fixedly installed on the calibration mechanism bracket 1. The pneumatic clamp 2 can be directly fixed to the calibration mechanism bracket 1 with bolts, or it can be transferred and fixed to the calibration mechanism bracket 1 through a connecting plate 3.

[0031] The pneumatic clamp 2 has two clamping arms 201, each with an initial position and a clamping position, forming a 90° angle. The pneumatic clamp 2 controls the two clamping arms 201 to rotate from the initial position to the clamping position. When the clamping arms 201 are in the clamping position, the two clamping arms 201 are parallel to each other and symmetrically distributed on both sides of the center of the workpiece.

[0032] Each clamping arm 201 is bolted to a correction mechanism support arm 4, which is equipped with a roller frame 11. Rollers 13 are mounted on the roller frame 11 via roller shafts 12, allowing free rotation of the rollers 13. The roller shafts 12 are parallel to the workpiece. Preferably, two rollers 13 are mounted side-by-side on each roller frame 11. When the two clamping arms 201 are in the clamping position, the rollers 13 on the two roller frames 11 are located on opposite sides of the workpiece, forming a clamping effect. This limits the workpiece's runout during rotation, ensuring a consistent gap between the sensor and the workpiece. Specifically, because there is a certain gap between the rollers 13 and the workpiece, the workpiece generally does not contact the rollers 13 during rotation. However, when the workpiece experiences radial runout, it will contact one of the rollers 13, which then limits further radial runout. Furthermore, if contact occurs between the workpiece and the rollers 13, the rollers 13 can avoid frictional damage to the workpiece through their own rotation.

[0033] In this embodiment, the pneumatic clamp 2 is a commercially available product, and the two clamping arms are driven to rotate synchronously by a cylinder. For example, the pneumatic clamp 2 is the Hengtuogao AKUD63-R20W12T-90.

[0034] Example 2

[0035] The difference between this embodiment and embodiment 1 is that the positions of the roller frame 11 and the roller 13 are adjustable in this embodiment. This allows the distance between the rollers 13 on both sides of the workpiece to be adjusted, so that the mechanism can adapt to workpieces of different diameters. Furthermore, the gap between the rollers 13 and the workpiece can be controlled according to the usage, thereby increasing the applicability of the correction mechanism.

[0036] As shown in Figure 3, to achieve the above-mentioned technical effect, an adjusting screw 9 is provided at the end of the correction mechanism support arm 4 in this embodiment. The adjusting screw 9 passes through the correction mechanism support arm 4 and is threadedly connected to the correction mechanism support arm 4. A handwheel 8 is installed at the rear end of the adjusting screw 9 to facilitate rotation of the screw, and the front end is rotatably connected to the roller frame 11. The adjusting screw is axially limited by an axial limiting structure to prevent the adjusting screw 9 from coming off the roller frame 11 and to enable the adjusting screw 9 to drive the roller frame 11 to move axially. As shown in Figure 5, the axial limiting structure includes a shoulder 901 provided on the adjusting screw 9 and a retaining ring 14 in the annular groove 902 provided at the front end of the adjusting screw 9. In other embodiments, the axial limiting structure can also use a shoulder 901 and a pin radially passing through the front end of the adjusting screw 9. The pin can be a cotter pin.

[0037] Furthermore, a locking nut 10 is also provided on the adjusting screw 9, and the locking nut 10 is located on the outside of the correction mechanism support arm 4. When it is necessary to move the roller frame 11, the locking nut 10 is loosened, and the roller frame 11 is moved by rotating the adjusting screw 9. After the roller frame 11 is adjusted to the correct position, the locking nut 10 is tightened again, so that the locking nut 10 is pressed against the side of the correction mechanism support arm 4 to prevent the adjusting screw 9 from loosening.

[0038] To reduce the machining difficulty of the parts and avoid machining internal threaded holes on the adjustment mechanism support arm 4, a through hole can be machined on the adjustment mechanism support arm 4, and an adjusting nut 7 can be forcibly installed in the through hole, forming a threaded engagement with the adjusting screw 9. Alternatively, a mounting hole perpendicular to the through hole can be machined on the adjustment mechanism support arm 4, and a cylindrical adjusting nut 7 can be inserted into the mounting hole. The adjusting nut 7 has a threaded hole perpendicular to its length direction, forming a threaded engagement with the adjusting screw 9. The length of the adjusting nut 7 is greater than the depth of the mounting hole, so that one end of the adjusting nut 7 can be locked in the mounting hole, forming a limit on the adjusting nut 7 and preventing the adjusting screw 9 from moving the adjusting nut 7.

[0039] To further ensure that the rolling frame 11 can move smoothly during the adjustment of the adjusting screw 9, a guide mechanism is also provided between the rolling frame 11 and the correction mechanism support arm 4.

[0040] In this embodiment, the guiding mechanism includes a self-lubricating copper sleeve 5 and a guide rod 6. The self-lubricating copper sleeve 5 is fixed on the support arm 4 of the correction mechanism, and the guide rod 6 passes through and slides with the self-lubricating copper sleeve 5. Under the drive of the adjusting screw 9, the guide rod 6 slides along the self-lubricating copper sleeve 5. Furthermore, in this embodiment, two sets of guiding mechanisms are provided, symmetrically distributed on both sides of the adjusting screw 9.

[0041] In other embodiments, the self-lubricating copper sleeve 5 may be mounted on the rolling frame 11, and the guide rod 6 may be mounted on the correction mechanism support arm 4. Alternatively, a guide mechanism consisting of a slider and a groove may be used.

[0042] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the specific implementation of this utility model with reference to the above embodiments. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model are within the protection scope of the pending claims.

Claims

1. A correction mechanism for slender shaft-like parts, characterized in that: The device includes a calibration mechanism support for connecting the calibration mechanism to the inductor moving mechanism on the induction hardening equipment; a pneumatic clamp fixed to the calibration mechanism support, the pneumatic clamp having two clamping arms with an initial position and a clamping position, the two clamping arms in the clamping position being parallel to each other and symmetrically distributed on both sides of the center of the workpiece; and a calibration mechanism support arm fixed to the clamping arms, the calibration mechanism support arm having a roller frame with two freely rotating rollers mounted side by side on the roller frame, the axis of the rollers being parallel to the axis of the workpiece; when the two clamping arms are in the clamping position, the rollers on the two roller frames form a clamping grip on the workpiece from opposite sides.

2. The correction mechanism for slender shaft parts according to claim 1, characterized in that: The initial position and the clamping position of the clamping arm form a 90° angle.

3. The correction mechanism for slender shaft parts according to claim 1, characterized in that: It also includes an adjusting screw, which passes through the support arm of the correction mechanism and is threadedly connected to the support arm of the correction mechanism. The front end of the adjusting screw is rotatably connected to the roller frame, and the adjusting screw is axially limited between the roller frame and the roller frame by an axial limiting structure.

4. The correction mechanism for slender shaft parts according to claim 3, characterized in that: The axial limiting structure includes a shoulder disposed at the front end of the adjusting screw and a retaining ring sleeved in the annular groove at the front end of the adjusting screw; or, the axial limiting structure includes a shoulder disposed at the front end of the adjusting screw and a pin radially passing through the front end of the adjusting screw.

5. The correction mechanism for slender shaft parts according to claim 3, characterized in that: An adjusting nut is provided on the arm of the correction mechanism at the position for the adjusting screw to pass through, and the adjusting nut has a threaded hole that mates with the adjusting screw.

6. The correction mechanism for slender shaft parts according to claim 5, characterized in that: The adjustment mechanism arm is provided with a through hole and a mounting hole that is perpendicularly connected to the through hole. The adjusting nut is cylindrical and its length is greater than the depth of the mounting hole so that the adjusting nut, which is inserted into the through hole through the mounting hole, can be locked in the opening of the mounting hole. The adjusting nut is provided with a threaded hole perpendicular to its length direction and the threaded hole is coaxially arranged with the through hole.

7. The correction mechanism for slender shaft parts according to claim 5, characterized in that: The correction mechanism arm is provided with a through hole, and the adjusting nut is forcibly installed in the through hole on the correction mechanism arm.

8. The correction mechanism for slender shaft parts according to claim 3, characterized in that: A guide mechanism is also provided between the roller frame and the correction mechanism arm.

9. The correction mechanism for slender shaft parts according to claim 8, characterized in that: The guiding mechanism includes a self-lubricating copper sleeve and a guide rod. The self-lubricating copper sleeve is fixed on the support arm of the correction mechanism, and the guide rod passes through the self-lubricating copper sleeve and slides with it.

10. The correction mechanism for slender shaft-like parts according to claim 8 or 9, characterized in that: Two sets of the guiding mechanism are provided, distributed on both sides of the adjusting screw.

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