Shaft press fitting tool

Abstract

The utility model relates to the field of shaft part assembly, in particular to a shaft press fitting tool. Comprising a guide plate, a magnetic steel body and a magnetic steel seat, two shaft height limiting sleeves are installed on the upper surface of a bottom plate, guide columns are slidably connected to the inner walls of the shaft height limiting sleeves, the guide columns are slidably connected with the surface of the guide plate, a limiting pressing head is installed on the surface of the guide plate, and a transmission shaft is installed on the lower surface of the limiting pressing head. The arc surface of the shaft height limiting sleeve is sleeved with a reset spring, the two ends of the reset spring are fixedly connected with the guide plate and the bottom plate respectively, a positioning disc is installed on the upper surface of the bottom plate, the magnetic steel base is placed on the upper surface of the positioning disc, and the magnetic steel body is placed on the upper surface of the magnetic steel base. The shaft press-fitting tool has the advantages that press-fitting quality can be guaranteed, waste of parts is reduced, and production cost and production reworking time are saved.

Description

Technical Field

[0001] The utility model relates to the field of shaft parts assembly, in particular to a shaft press-fitting tool. Background Art

[0002] During the production process, shaft parts need to be pressed with the help of press fitting tools.

[0003] The shaft parts are pressed and installed by adding a positioning head to the transmission shaft to cover the outer circle of the shaft, which is smoothly matched with the outer circle of the shaft, and the end face of the positioning head contacts the end face of the magnetic steel to ensure the verticality of the shaft with the magnetic steel and the magnetic steel seat during press installation. The material is made of stainless steel to avoid attraction with the magnetic steel, which causes the phenomenon that there is suction and it is difficult to remove the parts after the press installation is completed. However, since each batch of shafts is machined, the outer circle size of the shaft is unstable, sometimes the interference is large and sometimes the interference is small. When encountering a shaft with a large interference, the interference is large when it is press-fitted with the magnetic steel seat. The shaft is difficult to press-fit, and the end face of the shaft is easily deformed by pressing. When the end face of the press head contacts the end face of the shaft, the resistance of the press head is large, and the press head will be twisted and skewed, and not perpendicular to the end face of the shaft, resulting in the shaft and the magnetic steel seat not being perpendicular after press-fitting, and there is a swing, which causes the product to interfere with other parts after installation, which easily causes the product to be unqualified and cannot be reworked. In addition, the traditional shaft press-fitting tooling has low press-fitting quality when used, which increases the waste of parts, and wastes production costs and production rework time. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a shaft press-fitting tool.

[0005] In order to solve the above technical problems, the utility model provides a shaft pressing tool, including: a base plate, a guide plate, a magnetic steel body and a magnetic steel seat, two shaft height limit sleeves are installed on the upper surface of the base plate, the inner wall of the shaft height limit sleeve is slidably connected with a guide column, the guide column is slidably connected to the surface of the guide plate, the surface of the guide plate is installed with a limiting pressure head, and the lower surface of the limiting pressure head is installed with a transmission shaft.

[0006] Preferably, the arc surface of the shaft height limiting sleeve is sleeved with a return spring, and two ends of the return spring are fixedly connected to the guide plate and the bottom plate respectively.

[0007] Preferably, a positioning plate is installed on the upper surface of the base plate, the magnetic steel seat is placed on the upper surface of the positioning plate, and the magnetic steel body is placed on the upper surface of the magnetic steel seat.

[0008] Preferably, two fixing screws are slidably penetrated through the surface of the positioning plate, and the fixing screws are threadedly connected to the bottom plate.

[0009] The effect achieved by the above components is that after the positioning disc is worn out, personnel can easily replace it.

[0010] Preferably, a discharging structure is provided on one side of the bottom plate, and the discharging structure includes a partition, and the cross-section of the partition is "L"-shaped, and a screw rod is slidably penetrated on one side of the long arm end of the partition, and the arc surface of the screw rod is threadedly connected with a gear ring, one side of the gear ring is rotatably connected to one side of the long arm end of the partition, and one side of the long arm end of the partition is rotatably connected with a gear, and the gear is meshed with the gear ring, and one side of the long arm end of the partition is fixedly connected to a servo motor, and the output end of the servo motor is fixedly connected to the gear, and the end of the screw rod close to the magnetic steel body is fixedly connected to a limit plate, and the limit plate is in an arc shape.

[0011] The effect achieved by the above components is: by setting up the discharge structure, after the magnetic steel body and the magnetic steel seat are pressed together, the limit plate can be automatically adjusted to push the workpiece after pressing together from the positioning plate, without the need for manual material removal by personnel, thus avoiding the situation where the transmission shaft crushes the personnel's hands.

[0012] Preferably, a positioning rod is slidably penetrated through the side surface of the long arm end of the partition, and one end of the positioning rod is fixedly connected to the outer wall of the limiting plate.

[0013] The effect achieved by the above components is that when the screw drives the limit plate to start, the guide rod can limit the limit plate, thereby achieving the effect of preventing the limit plate from rotating and deviating during its movement.

[0014] Preferably, a rubber pad is fixedly connected to the inner wall of the limiting plate, and the rubber pad is adapted to the size of the inner wall of the limiting plate.

[0015] The effects achieved by the above components are: the rubber pad can increase the friction between the limit plate and the magnetic steel body and the magnetic steel seat, thereby improving the pushing efficiency of the limit plate on the workpiece.

[0016] Compared with the related art, the shaft press-fitting tool provided by the utility model has the following beneficial effects:

[0017] The utility model provides a shaft pressing tool. When in use, first align the bottom plate and the machine table of the pneumatic press machine with the center of the limiting pressure head, fix the tooling bottom plate, use other limiting tools to stick the magnetic steel and the magnetic steel seat in advance according to the angle requirements of the product for standby use. After the glue is cured, the semi-finished product with the magnetic steel and the magnetic steel seat stuck is placed on the tooling positioning plate and clamped on the pin on the positioning plate. After limiting the position, the flat square block of the transmission shaft is inserted into the flat square groove of the transmission shaft limiting pressure head, and then installed into the guide plate. At the same time, the lower end of the transmission shaft will automatically align with the pressing hole of the magnetic steel seat because of the limited position of the guide column and the guide plate. At this time, the starting switch of the press is pressed, and the press head of the press contacts the limiting pressure head of the transmission shaft. As the pressure of the press head increases, the guide plate and the transmission shaft press head and the transmission shaft will move downward at the same time. After the guide plate contacts the shaft height limiting sleeve, it is pressed into place. The press head returns to the initial position, and the workpiece is removed to complete the press-fitting. A mold frame plus a guide column, a height limit sleeve and a reset spring are used to ensure the verticality of the shaft and the magnetic steel seat, as well as the consistency of height and angle.

[0018] The tooling of this scheme saves more time for each machine adjustment than the tooling in the prior art. There is no need to adjust the limit device of the press to ensure the consistent press-fitting height of the shaft. The press-fitting height of the shaft is ensured by the tooling limit sleeve each time. The production height of each batch is consistent, and there is no need to adjust the height each time. After adding the guide column, the verticality and angle consistency of the transmission shaft and the magnetic steel and magnetic steel seat are good. The interference fit between the shaft and the magnetic steel seat has less effect on the press-fitting because of the guide column and guide plate. The shaft will not be deflected during the press-fitting process. The shaft is changed from the top of the original press shaft to the contact between the limit pressure head and the outer circle step of the shaft, which increases the contact area and strength. There is no direct contact with the press head, which solves the problem of deformation of the shaft end face due to pressure and improves the production qualification rate. The quality of press-fitting is guaranteed, the waste of parts is reduced, and the production cost and production rework time are saved.

[0019] After the magnetic steel is pressed and installed, the servo motor is started to drive the gear to rotate, the gear drives the gear ring to rotate, and the gear ring drives the lead screw on its inner wall to move, so that the lead screw drives the limit plate to push the magnetic steel body and the magnetic steel seat workpiece, and then the workpiece can be pushed out of the range of the positioning disk. When the lead screw drives the limit plate to start, the guide rod can limit the limit plate, thereby achieving the effect of avoiding rotational deviation during the movement of the limit plate. Among them, the rubber pad can increase the friction between the limit plate and the magnetic steel body and the magnetic steel seat, thereby improving the pushing efficiency of the limit plate on the workpiece. By setting the discharge structure, after the magnetic steel body and the magnetic steel seat are pressed and installed, the limit plate can be automatically adjusted to push the workpiece after the pressing is completed from the positioning disk, without the need for personnel to manually take out the material, thereby avoiding the situation where the transmission shaft crushes the personnel's hands. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1A schematic diagram of the structure of a shaft press-fitting tool provided by the utility model;

[0021] Figure 2 for Figure 1 The local structure schematic diagram shown;

[0022] Figure 3 for Figure 1 The structural schematic diagram of the discharging structure shown;

[0023] Figure 4 for Figure 3 The left structural diagram is shown.

[0024] Numbers in the figure: 1. Guide column; 2. Limit pressure head; 3. Guide plate; 4. Reset spring; 5. Magnetic steel body; 6. Magnetic steel seat; 7. Bottom plate; 8. Transmission shaft; 9. Shaft height limit sleeve; 10. Positioning plate; 11. Fixing screw; 12. Discharging structure; 1201. Partition; 1202. Screw; 1203. Gear ring; 1204. Gear; 1205. Servo motor; 1206. Limit plate; 1207. Positioning rod; 1208. Rubber pad. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0027] See also Figures 1 to 4 An embodiment of the utility model provides a shaft pressing tool, comprising: a base plate 7, a guide plate 3, a magnetic steel body 5 and a magnetic steel seat 6. Two shaft height limit sleeves 9 are installed on the upper surface of the base plate 7. The inner wall of the shaft height limit sleeve 9 is slidably connected with a guide column 1. The guide column 1 is slidably connected to the surface of the guide plate 3. A limiting pressure head 2 is installed on the surface of the guide plate 3. A transmission shaft 8 is installed on the lower surface of the limiting pressure head 2. A discharge structure 12 is provided on one side of the base plate 7.

[0028] In the embodiments of the present invention, please refer to Figure 2 The arc surface of the shaft height limit sleeve 9 is sleeved with a reset spring 4, and the two ends of the reset spring 4 are fixedly connected to the guide plate 3 and the base plate 7 respectively. A positioning plate 10 is installed on the upper surface of the base plate 7. The magnetic steel seat 6 is placed on the upper surface of the positioning plate 10, and the magnetic steel body 5 is placed on the upper surface of the magnetic steel seat 6. Two fixing screws 11 are slidably penetrated on the surface of the positioning plate 10, and the fixing screws 11 are threadedly connected to the base plate 7. After the positioning plate 10 is worn out, personnel can easily replace it.

[0029] In the embodiments of the present invention, please refer to Figure 3 and Figure 4 The discharging structure 12 includes a partition 1201, the cross section of the partition 1201 is "L"-shaped, a screw rod 1202 is slidably penetrated on one side of the long arm end of the partition 1201, and the arc surface of the screw rod 1202 is threadedly connected with a gear ring 1203, one side of the gear ring 1203 is rotatably connected to one side of the long arm end of the partition 1201, one side of the long arm end of the partition 1201 is rotatably connected with a gear 1204, the gear 1204 is meshed with the gear ring 1203, one side of the long arm end of the partition 1201 is fixedly connected with a servo motor 1205, the output end of the servo motor 1205 is fixedly connected to the gear 1204, and the end of the screw rod 1202 close to the magnetic steel body 5 is fixedly connected to a limit plate 1206, and the limit plate 1206 is arc-shaped. By setting the discharging structure 12, after the magnetic steel body 5 and the magnetic steel seat 6 are press-fitted, the limit plate 1206 can be automatically adjusted. The positioning plate 1206 pushes the workpiece from the positioning disk 10 after the press-fitting is completed, and there is no need for personnel to manually take out the material, which avoids the situation where the transmission shaft 8 crushes the personnel's hands. A positioning rod 1207 is slidably penetrated on the side of the long arm end of the partition 1201, and one end of the positioning rod 1207 is fixedly connected to the outer wall of the limit plate 1206. When the screw rod 1202 drives the limit plate 1206 to start, the guide rod can limit the limit plate 1206, thereby achieving the effect of avoiding rotational deviation during the movement of the limit plate 1206. The inner wall of the limit plate 1206 is fixedly connected with a rubber pad 1208, and the rubber pad 1208 is adapted to the size of the inner wall of the limit plate 1206. The rubber pad 1208 can increase the friction between the limit plate 1206 and the magnetic steel body 5 and the magnetic steel seat 6, thereby improving the pushing effect of the limit plate 1206 on the workpiece.

[0030] The working principle of a shaft pressing tool provided by the utility model is as follows: when in use, first align the bottom plate 7 and the machine platform of the pneumatic press machine with the center of the limit pressure head 2, fix the tooling bottom plate 7, use other limit tooling to stick the magnetic steel and the magnetic steel seat 6 in advance according to the angle requirements of the product for standby use. After the glue is cured, the semi-finished product with the magnetic steel and the magnetic steel seat 6 is placed on the tooling positioning disk 10 and stuck on the pin on the positioning disk 10. After limiting the position, the flat square block of the transmission shaft 8 is inserted into the flat square groove of the limit pressure head 2 of the transmission shaft 8, and then installed into the guide plate 3. At the same time, the lower end of the transmission shaft 8 will automatically align with the pressing hole of the magnetic steel seat 6 due to the limited position of the guide column 1 and the guide plate 3. At this time, press the start switch of the press, and the press head of the press contacts the limit pressure head 2 of the transmission shaft 8. As the pressure increases, the press head of the press, the guide plate 3 and the drive shaft 8 press head, and the drive shaft 8 will move downward at the same time. After the guide plate 3 contacts the shaft height limiting sleeve 9, it is pressed into place. The press head returns to the initial position, and the workpiece is removed to complete the press-fitting. A mold frame plus a guide column 1, a height limit sleeve and a reset spring 4 are used to ensure the verticality of the shaft and the magnetic steel seat 6, as well as the consistency of height and angle.

[0031] The tooling of this scheme saves more time for each machine adjustment than the tooling in the prior art. There is no need to adjust the limit device of the press to ensure the consistent press-fitting height of the shaft. The press-fitting height of the shaft is ensured by the tooling limit sleeve each time. The production height of each batch is consistent, and there is no need to adjust the height each time. After adding the guide column 1, the verticality and angle consistency of the transmission shaft 8 and the magnetic steel and magnetic steel seat 6 are good. The interference between the shaft and the magnetic steel seat 6 has a smaller effect on the press-fitting because of the guide column 1 and the guide plate 3. The shaft will not be deflected during the press-fitting process. The shaft is changed from the top of the original press shaft to the contact with the outer circle step of the shaft with the limit pressure head 2, which increases the contact area and strength. There is no direct contact with the press head, which solves the problem of deformation of the end face of the shaft due to pressure and improves the production qualification rate. The quality of press-fitting is guaranteed, the waste of parts is reduced, and the production cost and production rework time are saved.

[0032] After the magnetic steel is pressed and installed, the servo motor 1205 is started to drive the gear 1204 to rotate, the gear 1204 drives the gear ring 1203 to rotate, and the gear ring 1203 drives the screw rod 1202 on its inner wall to move, so that the screw rod 1202 drives the limit plate 1206 to push the magnetic steel body 5 and the magnetic steel seat 6 workpiece, and then the workpiece can be pushed out of the range of the positioning plate 10. When the screw rod 1202 drives the limit plate 1206 to start, the guide rod can limit the limit plate 1206, thereby avoiding the limit plate 1 The movement process of 206 produces a rotational offset effect, wherein the rubber pad 1208 can increase the friction between the limit plate 1206 and the magnetic steel body 5 and the magnetic steel seat 6, thereby improving the pushing efficiency of the limit plate 1206 on the workpiece, and by setting the discharge structure 12, after the magnetic steel body 5 and the magnetic steel seat 6 are pressed together, the limit plate 1206 can be automatically adjusted to push the press-assembled workpiece out of the positioning plate 10, without the need for manual material removal by personnel, thus avoiding the situation where the transmission shaft 8 crushes the personnel's hands.

[0033] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0034] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A shaft press-fitting tool, characterized in that: include: A base plate (7), a guide plate (3), a magnetic steel body (5) and a magnetic steel seat (6); the upper surface of the base plate (7) is provided with two shaft height limiting sleeves (9); the inner wall of the shaft height limiting sleeve (9) is slidably connected with a guide column (1); the guide column (1) is slidably connected with the surface of the guide plate (3); the surface of the guide plate (3) is provided with a limiting pressure head (2); the lower surface of the limiting pressure head (2) is provided with a transmission shaft (8).

2. The shaft press-fitting tool according to claim 1, characterized in that: The arc surface of the shaft height limiting sleeve (9) is sleeved with a return spring (4), and the two ends of the return spring (4) are respectively fixedly connected to the guide plate (3) and the bottom plate (7).

3. The shaft press-fitting tool according to claim 1, characterized in that: A positioning plate (10) is installed on the upper surface of the base plate (7), the magnetic steel seat (6) is placed on the upper surface of the positioning plate (10), and the magnetic steel body (5) is placed on the upper surface of the magnetic steel seat (6).

4. The shaft press-fitting tool according to claim 3, characterized in that: Two fixing screws (11) are slidably penetrated through the surface of the positioning plate (10), and the fixing screws (11) are threadedly connected to the bottom plate (7).

5. The shaft press-fitting tool according to claim 1, characterized in that: A discharging structure (12) is provided on one side of the bottom plate (7), and the discharging structure (12) comprises a partition (1201), the cross section of the partition (1201) is "L"-shaped, a screw rod (1202) is slidably penetrated through one side of the long arm end of the partition (1201), a gear ring (1203) is threadedly connected to the circular arc surface of the screw rod (1202), one side of the gear ring (1203) is rotatably connected to one side of the long arm end of the partition (1201), and the partition (120 1) One side of the long arm end is rotatably connected to a gear (1204), the gear (1204) is meshed with a gear ring (1203), one side of the long arm end of the partition plate (1201) is fixedly connected to a servo motor (1205), the output end of the servo motor (1205) is fixedly connected to the gear (1204), and one end of the lead screw (1202) close to the magnetic steel body (5) is fixedly connected to a limit plate (1206), and the limit plate (1206) is in an arc shape.

6. The shaft press-fitting tool according to claim 5, characterized in that: A positioning rod (1207) is slidably inserted through the side surface of the long arm end of the partition (1201), and one end of the positioning rod (1207) is fixedly connected to the outer wall of the limiting plate (1206).

7. The shaft press-fitting tool according to claim 5, characterized in that: A rubber pad (1208) is fixedly connected to the inner wall of the limiting plate (1206), and the rubber pad (1208) is adapted to the size of the inner wall of the limiting plate (1206).

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