Device for press-fitting bearing outer ring and oil seal

Abstract

The invention discloses a device for press-fitting a bearing outer ring and an oil seal, comprising a buffer pressure head, the buffer pressure head comprising an impact pressure head, a lock nut sleeve, an outer sleeve and a spring; the impact pressure head can be driven by a hydraulic press to press down to press-fit the bearing outer ring and the oil seal; the lock nut sleeve is sleeved and fixed on the impact pressure head to form a receiving groove with the impact pressure head; the outer sleeve can be slidably sleeved on the impact pressure head along the impact pressure head and cannot fall off; the outer sleeve can be retracted into and extended out of the receiving groove; the spring is located in the receiving groove and is used to provide damping for the outer sleeve to be retracted into the receiving groove; wherein, when the buffer pressure head is press-fitted, the outer sleeve first abuts against the outer periphery of the press-fitting hole on the workpiece to be press-fitted, and then the impact pressure head presses the bearing outer ring or the oil seal into the press-fitting hole, the outer sleeve gradually retracts into the receiving groove and squeezes the spring, and the spring provides a stamping buffering effect to the impact pressure head through the lock nut sleeve. In the device, the outer sleeve cooperates with the spring to provide a stamping buffering effect to the impact pressure head.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical industry, and more particularly to a device for press-fitting a bearing outer ring and an oil seal. Background Art

[0002] The upper wishbone is a relatively important component in the independent suspension. During production, the bearing outer ring and oil seal need to be pressed into the mounting hole of the upper wishbone.

[0003] In the existing equipment for press-fitting bearing outer rings and oil seals, the pressing head is driven by a hydraulic press. During the actual press-fitting process, it is inevitable that the bearing outer ring, oil seal or upper cross arm will be damaged due to excessive impact force of the pressing head.

[0004] Therefore, how to prevent the pressure head from damaging the bearing outer ring, oil seal and the upper cross arm workpiece to be pressed due to excessive impact force is an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0005] In view of this, the present invention provides a device for pressing a bearing outer ring and an oil seal, wherein an outer sleeve is arranged on the impact pressure head, and the outer sleeve cooperates with a spring to provide a stamping buffering effect to the impact pressure head, thereby preventing the impact pressure head from damaging the bearing outer ring, the oil seal or the workpiece to be pressed due to excessive impact force.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A device for press-fitting a bearing outer ring and an oil seal comprises a buffer pressure head, wherein the buffer pressure head comprises:

[0008] An impact pressure head, which can be driven by a hydraulic press to press down to press-fit the bearing outer ring and the oil seal;

[0009] A lock nut sleeve, the lock nut sleeve is sleeved on and fixed to the impact pressure head, and the lock nut sleeve and the impact pressure head form a receiving groove;

[0010] An outer sliding sleeve, which can be slidably mounted on the impact pressure head along the impact pressure head and cannot fall off the impact pressure head; the outer sliding sleeve can be retracted into and extended out of the accommodating groove during the sliding process along the impact pressure head;

[0011] a spring, the spring being located in the receiving groove and being used for providing damping for the outer sliding sleeve to retract into the receiving groove;

[0012] Among them, when the buffer pressure head is press-fitted, the outer sleeve first rests against the outer periphery of the press-fitting hole on the workpiece to be press-fitted, and then the impact pressure head presses the bearing outer ring or oil seal into the press-fitting hole, and the outer sleeve gradually shrinks into the accommodating groove and squeezes the spring, and the spring provides a stamping buffering effect to the impact pressure head through the lock nut sleeve.

[0013] Preferably, in the above-mentioned device for pressing the bearing outer ring and oil seal, the inner wall of the outer sleeve is provided with an accommodating space for clamping the bearing outer ring, so that after the outer sleeve abuts against the outer periphery of the pressing hole on the workpiece to be pressed, the impact head continues to punch and press the bearing outer ring clamped in the accommodating space into the pressing hole.

[0014] Preferably, in the above-mentioned device for pressing the bearing outer ring and oil seal, a cylindrical magnet is fixed on the outer sleeve for adsorbing the inner end of the bearing outer ring; a spring plunger is also provided on the outer sleeve, and the spring plunger is used to limit the outer end of the bearing outer ring to prevent the bearing outer ring from slipping out of the outer sleeve.

[0015] Preferably, in the above-mentioned device for pressing the bearing outer ring and oil seal, the buffer pressure head also includes an oil seal pressure head, and the oil seal pressure head is detachably mounted on the impact end face of the impact pressure head by a butterfly bolt; an oil seal accommodating groove is provided on the oil seal pressure head, and the oil seal accommodating groove is used for interference fit with the oil seal.

[0016] Preferably, in the above-mentioned device for press-fitting the bearing outer ring and the oil seal, the oil seal pressure head is located inside the outer sliding sleeve.

[0017] Preferably, in the above-mentioned device for press-fitting the bearing outer ring and the oil seal, a locking bolt is installed on the end of the outer sleeve that can extend into the accommodating groove, and the head of the locking bolt extends out of the outer sleeve to prevent the spring from being over-compressed.

[0018] Preferably, in the above-mentioned device for press-fitting the bearing outer ring and the oil seal, the device further comprises a stamping platform, and the stamping platform is provided with a centering component for positioning the workpiece to be press-fitted.

[0019] Preferably, in the above-mentioned device for press-fitting the bearing outer ring and the oil seal, the centering component comprises:

[0020] A centering base, the centering base comprising a mounting flange fixed on the stamping platform and a positioning column fixedly connected to the mounting flange;

[0021] An upper centering seat, which is detachably mounted on the positioning column and is used to extend into the press-fitting hole when the bearing outer ring and the oil seal are first press-fitted into the press-fitting hole to limit the press-fitting depth of the bearing outer ring and the oil seal;

[0022] A lower centering seat is detachably mounted on the positioning column and is used to extend into the press-fitting hole when the bearing outer ring and the oil seal are press-fitted on the other side of the press-fitting hole to limit the press-fitting depth of the bearing outer ring and the oil seal.

[0023] Preferably, in the above-mentioned device for press-fitting the bearing outer ring and the oil seal, the hydraulic press is fixedly connected to the stamping platform.

[0024] The present invention provides a device for press-fitting a bearing outer ring and an oil seal, comprising a buffer pressure head, the buffer pressure head comprising an impact pressure head, a lock nut sleeve, an outer sleeve and a spring; the impact pressure head can be driven by a hydraulic press to be pressed downward to press-fit the bearing outer ring and the oil seal; the lock nut sleeve is sleeved and fixed on the impact pressure head, and the lock nut sleeve and the impact pressure head form a receiving groove; the outer sleeve can be slidably sleeved on the impact pressure head along the impact pressure head and cannot be fallen off by the impact pressure head; the outer sleeve can be retracted into and extended out of the receiving groove during the sliding process along the impact pressure head; the spring is located in the receiving groove and is used to provide damping for the outer sleeve to be retracted into the receiving groove; wherein, when the buffer pressure head is press-fitted, the outer sleeve first abuts against the outer periphery of the press-fitting hole on the workpiece to be press-fitted, and then the impact pressure head presses the bearing outer ring or the oil seal into the press-fitting hole, the outer sleeve gradually retracts into the receiving groove and squeezes the spring, and the spring provides a stamping buffering effect to the impact pressure head through the lock nut sleeve.

[0025] In the device for pressing the outer ring of a bearing and an oil seal provided by the present invention, an outer sleeve is arranged on the impact pressure head, and the outer sleeve cooperates with the spring to provide a stamping buffering effect to the impact pressure head, thereby preventing the impact pressure head from damaging the outer ring of the bearing, the oil seal or the workpiece to be pressed due to excessive impact force. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic structural diagram of a device for press-fitting a bearing outer ring and an oil seal provided in an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of the structure of a buffer pressure head provided in an embodiment of the present invention;

[0029] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0030] Figure 4 An assembly diagram of a centering base and an upper centering seat provided in an embodiment of the present invention;

[0031] Figure 5 for Figure 4 Cross-sectional view of the middle BB;

[0032] Figure 6 A schematic diagram of the structure of a lower centering seat provided in an embodiment of the present invention;

[0033] Figure 7 A schematic diagram of the structure of a bearing outer ring provided in an embodiment of the present invention;

[0034] Figure 8 for Figure 7 Cross-sectional view of middle HH;

[0035] Fig. 9 A schematic diagram of the structure of an oil seal provided in an embodiment of the present invention;

[0036] Fig.10 for Fig. 9 Cross-sectional view of JJ;

[0037] in, Figure 1-Figure 10 middle:

[0038] Hydraulic press 101; buffer ram 102; lock nut 121; outer sleeve 122; spring plunger 123; spring 124; locking bolt 125; cylindrical magnet 126; oil seal ram 127; butterfly bolt 128; impact ram 129; upper centering seat 103; lower centering seat 104; centering base 105; workpiece to be pressed 200; bearing outer ring 201; oil seal 202. DETAILED DESCRIPTION

[0039] An embodiment of the present invention discloses a device for pressing a bearing outer ring and an oil seal, wherein an outer sleeve is arranged on an impact pressure head, and the outer sleeve cooperates with a spring to provide a stamping buffering effect to the impact pressure head, thereby preventing the impact pressure head from damaging the bearing outer ring, the oil seal or the workpiece to be pressed due to excessive impact force.

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1-Figure 10The embodiment of the present invention provides a device for press-fitting a bearing outer ring and an oil seal, comprising a buffer pressure head 102, wherein the buffer pressure head 102 comprises an impact pressure head 129, a lock nut sleeve 121, an outer sleeve 122 and a spring 124; the impact pressure head 129 can be driven by a hydraulic press 101 to press down to press-fit the bearing outer ring 201 and the oil seal 202; the lock nut sleeve 121 is sleeved and fixed on the impact pressure head 129, and the lock nut sleeve 121 and the impact pressure head 129 form a receiving groove; the outer sleeve 122 can be slidably sleeved on the impact pressure head 129 along the impact pressure head 129, and cannot be The head 129 falls off; the outer sleeve 122 can be retracted into and extended out of the accommodating groove while sliding along the impact ram 129; the spring 124 is located in the accommodating groove, and is used to provide damping for the outer sleeve 122 to retract into the accommodating groove; wherein, when the buffer ram 102 is press-fitted, the outer sleeve 122 first rests against the outer periphery of the press-fitting hole on the workpiece 200 to be press-fitted, and then the impact ram 129 presses the bearing outer ring 201 or the oil seal 202 into the press-fitting hole, and the outer sleeve 122 gradually retracts into the accommodating groove and squeezes the spring 124, and the spring 124 provides a stamping buffering effect to the impact ram 129 through the lock nut sleeve 121.

[0042] In the device for pressing a bearing outer ring and an oil seal provided in an embodiment of the present invention, an outer sleeve 122 is provided on the impact press head 129. The outer sleeve 122 cooperates with the spring 124 to provide a stamping buffering effect to the impact press head 129, thereby preventing the impact press head 129 from damaging the bearing outer ring 201, the oil seal 202 or the workpiece 200 to be pressed due to excessive impact force.

[0043] The spring 124 is configured to be connected to at least one of the outer sleeve 122 and the lock nut sleeve 121 to ensure that it reliably performs a stamping buffering function on the impact pressure head 129; in addition, the spring 124 is preferably configured in multiple numbers, specifically 2, 3, 4, etc. Further, the spring 124 can be configured to be connected to the lock nut sleeve 121 and the outer sleeve 122 respectively to prevent the outer sleeve 122 from falling off the impact pressure head 129, or the end of the outer sleeve 122 extending into the receiving groove is provided with an anti-falling block limited in the receiving groove, so that the outer sleeve 122 cannot fall off the impact pressure head 129.

[0044] Preferably, in the above-mentioned device for pressing the bearing outer ring and oil seal, the inner wall of the outer sleeve 122 is provided with an accommodating space for clamping the bearing outer ring 201, so that after the outer sleeve 122 abuts against the outer periphery of the pressing hole on the workpiece 200 to be pressed, the impact head 129 continues to punch and press the bearing outer ring 201 clamped in the accommodating space into the pressing hole, thereby eliminating the step of positioning the bearing outer ring 201 and facilitating press fitting.

[0045] In order to position the bearing outer ring 201 in the accommodation space, in the device for pressing the bearing outer ring and the oil seal provided in the above embodiment, a cylindrical magnet 126 is fixed on the outer sleeve 122, and the cylindrical magnet 126 is used to adsorb the inner end of the bearing outer ring 201; a spring plunger 123 is also provided on the outer sleeve 122, and the spring plunger 123 is used to limit the outer end of the bearing outer ring 201 to prevent the bearing outer ring 201 from slipping out of the outer sleeve 122. The inner end and the outer end of the bearing outer ring 201 are the two ends of the bearing outer ring 201 along the axial direction, the inner end extends into the inner part of the outer sleeve 122, and the outer end is close to the end of the outer sleeve 122 for pressing against the workpiece 200 to be pressed. After the outer sleeve 122 rests against the outer periphery of the press-fitting hole on the workpiece 200 to be pressed, the impact press head 129 continues to press down and drives the bearing outer ring 201 in the accommodating space to move into the press-fitting hole. The bearing outer ring 201 first squeezes the spring plunger 123 and retracts it into the outer sleeve 122. Then, the bearing outer ring 201 gradually escapes from the accommodating space and is pressed into the press-fitting hole of the workpiece 200 to be pressed.

[0046] In addition to directly impacting and pressing the bearing outer ring 201, the impact head 129 can also directly impact and press the oil seal 202. However, in order to improve the pressing effect of the oil seal 202, in the above embodiment, the buffer head 102 also includes an oil seal head 127, which is detachably mounted on the impact end face of the impact head 129 by a butterfly bolt 128; the oil seal head 127 is provided with an oil seal accommodating groove, which is used to interference fit with the oil seal 202 to position the oil seal 202. When the oil seal 202 is press-fitted, the outer sleeve 122 first rests against the outer periphery of the press-fitting hole on the workpiece 200 to be press-fitted, and then the impact press head 129 drives the oil seal press head 127 to be pressed into the press-fitting hole. After the oil seal 202 enters the press-fitting hole, it contacts and squeezes the inner wall of the press-fitting hole due to its own flexibility. The inner wall of the press-fitting hole provides damping to the oil seal 202, preventing the oil seal 202 from escaping from the press-fitting hole again with the oil seal press head 127.

[0047] Specifically, when not press-fitted, the oil seal pressure head 127 is located inside the outer sliding sleeve 122 .

[0048] A locking bolt 125 is installed on the end of the outer sleeve 122 that can extend into the accommodating groove, and the head of the locking bolt 125 extends out of the outer sleeve 122 to prevent the spring 124 from being over-compressed and damaged.

[0049] The device for press-fitting the bearing outer ring and the oil seal further comprises a stamping platform, on which a centering component for positioning the workpiece 200 to be press-fitted is disposed. The centering component comprises:

[0050] A centering base 105, the centering base 105 comprises a mounting flange fixed on the stamping platform and a positioning column which is an integral structure with the mounting flange;

[0051] The upper centering seat 103 is detachably mounted on the positioning column and is used to extend into the press-fitting hole when the bearing outer ring 201 and the oil seal 202 are first press-fitted into the press-fitting hole of the workpiece 200 to locate the position of the press-fitting hole and limit the press-fitting depth of the bearing outer ring 201 and the oil seal 202;

[0052] The lower centering seat 104 can be detachably mounted on the positioning column, and is used to extend into the press-fitting hole when the bearing outer ring 201 and the oil seal 202 are press-fitted on the other side of the press-fitting hole, so as to locate the position of the press-fitting hole and limit the press-fitting depth of the bearing outer ring 201 and the oil seal 202. The structure of the lower centering seat 104 is the same as that of the upper centering seat, except that the height dimension along the axial direction is lower than that of the upper centering seat 103.

[0053] Specifically, in the above-mentioned device for press-fitting the outer ring of the bearing and the oil seal, the impact ram 129 is driven by the hydraulic press 101. The hydraulic press 101 is fixedly connected to the stamping platform to ensure that when the workpiece 200 to be press-fitted is placed on the centering component, the axis of the impact ram 129 coincides with the axis of the press-fitting hole in the workpiece 200 to be press-fitted. The above-mentioned device includes a main machine, and the stamping platform and the hydraulic press 101 are respectively fixed on the main machine.

[0054] When applying the device for press-fitting the bearing outer ring and the oil seal provided in the above embodiment, firstly tighten the butterfly bolt 128 to remove the oil seal pressure head 127, insert the upper centering seat 103 into the centering base 105, and then put the product to be press-fitted (i.e., the upper cross arm) into the upper centering seat 103 for positioning, and then insert the tapered roller bearing outer ring 201 into the outer sleeve 122 with the side with a large taper facing upward, so that the bearing outer ring 201 is attracted by the cylindrical magnet 126 and clamped by the spring plunger 123, and then start the hydraulic press 101 to press down. After the outer sleeve 122 contacts the upper cross arm, the impact pressure head 129 continues to press down to press the tapered roller bearing outer ring 201 into place. During this period, the spring 124 provides a buffering effect to the impact pressure head 129, and the locking bolt 125 provides a limiting effect on the depth of the outer sleeve 122 extending into the accommodating groove. After being pressed into place, lift the hydraulic press 101, and then continue to press the oil seal 202: install the oil seal pressure head 127 on the impact pressure head 129 with the butterfly bolt 128, and insert the oil seal 202 into the oil seal receiving groove of the oil seal pressure head 127, so that the oil seal 202 is clamped in an interference fit manner, and then start the hydraulic press 101 to press down. After the outer sleeve 122 contacts the upper cross arm, the impact pressure head 129 continues to press down to press the oil seal 202 into place. During this period, the spring 124 provides a buffering effect to the impact pressure head 129, and the locking bolt 125 provides a limiting effect on the depth of the outer sleeve 122 extending into the receiving groove. After the bearing outer ring 201 and the oil seal 202 are pressed into place, the workpiece 200 to be pressed into place is taken out from the upper centering seat 103, and then the upper centering seat 103 is also removed, and then the lower centering seat 104 is inserted into the centering base 105, and then the press-fitted end of the workpiece 200 to be pressed into the lower centering seat 104, and the bearing inner ring is used for positioning, and then the bearing outer ring 201 and the oil seal 202 are pressed into place. The steps are as above and will not be repeated here.

[0055] The device provided in this embodiment integrates the functions of pressing the bearing outer ring 201 and the oil seal 202, is convenient for users to use, has a simple structure, is easy to manufacture, and has a low production cost.

[0056] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0057] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for press-fitting a bearing outer ring and an oil seal, characterized in that: A buffer pressure head is included, and the buffer pressure head includes: An impact pressure head, which can be driven by a hydraulic press to press down to press-fit the bearing outer ring and the oil seal; A lock nut sleeve, the lock nut sleeve is sleeved on and fixed to the impact pressure head, and the lock nut sleeve and the impact pressure head form a receiving groove; An outer sliding sleeve, which can be slidably mounted on the impact pressure head along the impact pressure head and cannot fall off the impact pressure head; the outer sliding sleeve can be retracted into and extended out of the accommodating groove during the sliding process along the impact pressure head; a spring, the spring being located in the receiving groove and being used for providing damping for the outer sliding sleeve to retract into the receiving groove; Wherein, when the buffer pressure head is press-fitted, the outer sleeve first abuts against the outer periphery of the press-fitting hole on the workpiece to be press-fitted, and then the impact pressure head presses the bearing outer ring or oil seal into the press-fitting hole, and the outer sleeve gradually shrinks into the accommodating groove and squeezes the spring, and the spring provides a stamping buffering effect to the impact pressure head through the lock nut sleeve; A locking bolt is installed on the end of the outer sliding sleeve that can extend into the accommodating groove, and the head of the locking bolt extends out of the outer sliding sleeve to prevent the spring from being over-compressed; The device also includes a stamping platform, on which a centering component for positioning the workpiece to be pressed is provided; The inner wall of the outer sleeve is provided with a receiving space for clamping the outer ring of the bearing, so that after the outer sleeve abuts against the outer periphery of the press-fitting hole on the workpiece to be press-fitted, the impact head continues to punch and press the outer ring of the bearing clamped in the receiving space into the press-fitting hole; A cylindrical magnet is fixed on the outer sleeve for adsorbing the inner end of the outer ring of the bearing; a spring plunger is also provided on the outer sleeve for limiting the outer end of the outer ring of the bearing to prevent the outer ring of the bearing from slipping out of the outer sleeve; The buffer pressure head also includes an oil seal pressure head, which is detachably mounted on the impact end face of the impact pressure head through a butterfly bolt; an oil seal accommodating groove is provided on the oil seal pressure head, and the oil seal accommodating groove is used for interference fit with the oil seal; The centering component comprises: A centering base, the centering base comprising a mounting flange fixed on the stamping platform and a positioning column fixedly connected to the mounting flange; An upper centering seat, which is detachably mounted on the positioning column and is used to extend into the press-fitting hole when the bearing outer ring and the oil seal are first press-fitted into the press-fitting hole to limit the press-fitting depth of the bearing outer ring and the oil seal; A lower centering seat is detachably mounted on the positioning column and is used to extend into the press-fitting hole when the bearing outer ring and the oil seal are press-fitted on the other side of the press-fitting hole to limit the press-fitting depth of the bearing outer ring and the oil seal.

2. The device for press-fitting a bearing outer ring and an oil seal according to claim 1, characterized in that: The oil seal pressure head is located in the outer sliding sleeve.

3. The device for press-fitting a bearing outer ring and an oil seal according to claim 1, characterized in that: The hydraulic press is fixedly connected to the stamping platform.

Images