Quick-change pressure head structure for bearing press fitting

Abstract

The utility model discloses a bearing press-fitting quick-change pressure head structure, which utilizes a strong magnet to automatically pre-position a bearing, when different types of bearings need to be press-fitted, an original quick-change pressure head body can be taken down and replaced with a new quick-change pressure head body, the replacement operation is convenient, the quick-change pressure head body can be easily ensured to be installed in place after replacement, and the bearing press-fitting quick-change pressure head structure is simple in structure and convenient to use. Adaptability is good, and overall efficiency is high. The main structure comprises a press connector, a plurality of positioning holes, a quick-change pressure head body and a powerful magnet, the bottom surface of the powerful magnet is horizontal, the press connector comprises a connector body, the bottom surface of the connector body is an upper approval plane, a sleeve groove is formed in the quick-change pressure head body, and the groove bottom surface of the sleeve groove is a lower approval plane. The positioning pin structure comprises a pin spring, a pin seat and a positioning pin. The positioning pin comprises an inner pin head capable of being inserted into the positioning hole, a middle pin section connected with the inner pin head and an outer pin handle connected with the middle pin section.

Description

TECHNICAL FIELD

[0001] The utility model belongs to vehicle transmission, transmission spare assembly technical field, especially relates to a bearing press -fit quick -change pressure head structure. BACKGROUND

[0002] In the structure of automobile transmission, various types of sealing type bearings are often used, and the sealing type bearing is characterized by the closed end of the bearing, which can play the role of sealing oil (lubricating oil). As ordinary bearings are installed, when installing sealing type bearings, bearing presses are often used, before installation, the sealing type bearing is placed against the installation hole on the part and above the installation hole, and the stroke cylinder of the bearing press is lowered, and the lower pressing structure (i.e. the pressure head) provided on the stroke cylinder can press the sealing type bearing into the corresponding installation hole. Due to the diversification of products, there are many types of sealing type bearings, and corresponding pressure heads are needed for different types of sealing type bearings. In the actual assembly process, the replacement of the pressure head is slightly complex and tedious, which affects the production rhythm and reduces the production efficiency. CONTENT OF THE UTILITY MODEL

[0003] The utility model provides a bearing press -fit quick -change pressure head structure, utilize strong magnet automatic pre -positioning to bearing, through the stroke cylinder of bearing press lower, bearing can be pressed into corresponding installation hole, when need press -fit different type bearing, can take down original quick -change pressure head body and change new quick -change pressure head body, convenient operation is changed, after changing, can be more easily guarantee quick -change pressure head body installation in place, good adaptability, whole efficiency is high.

[0004] In order to realize the above object, the utility model adopts the following technical scheme:

[0005] A bearing press -fit quick -change pressure head structure, including the connecting head of press, a plurality of positioning holes that open on the side wall of the connecting head of press, the quick -change pressure head body that can be covered on the connecting head of press and the strong magnet that is located at the lower end of the quick -change pressure head body, the bottom surface of the strong magnet is horizontal;

[0006] The connecting head of press includes the connecting head body connected with the press, and the bottom surface of the connecting head body is an upper reference plane, the quick -change pressure head body is provided with a sleeve groove for sleeving on the connecting head body, the sleeve groove is opened on the upper end of the quick -change pressure head body, and the groove bottom surface of the sleeve groove is a lower reference plane that can abut against the upper reference plane;

[0007] Further comprising a plurality of positioning pin structures corresponding to the positioning holes, in the corresponding positioning hole and the positioning pin structure: the positioning pin structure includes a pin spring, a pin seat provided on the quick -change pressure head body and a positioning pin in sliding connection with the pin seat, one end of the pin spring is fixed opposite to the pin seat, the other end of the pin spring is fixed opposite to the positioning pin, and the positioning pin includes an inner pin head that can be inserted into the positioning hole, a middle pin section connected with the inner pin head and an outer pin handle connected with the middle pin section.

[0008] As preferred, the press connecting head further comprises an auxiliary positioning head arranged at the bottom of the connecting head body, an auxiliary groove opening at the groove bottom surface of the sleeve groove is arranged on the quick-change pressing head body, and an avoiding groove opening at the groove bottom surface of the auxiliary groove is arranged on the quick-change pressing head body, and the auxiliary positioning head is matched with the auxiliary groove.

[0009] As preferred, the number of the positioning holes is two, the two positioning holes are symmetrically arranged along the axis of the press connecting head, and the two positioning holes are coaxially arranged, when the upper and lower alignment planes are abutted, in the corresponding positioning hole and positioning pin structure: a threaded hole communicated with the positioning hole is arranged on the quick-change pressing head body, the pin seat is threadedly connected with the threaded hole, a pin hole communicated with the threaded hole and coaxially arranged with the positioning hole is arranged on the pin seat, the pin spring is arranged in the pin hole, the pin spring is sleeved on the inner pin body, one end of the pin spring away from the press connecting head is fixedly connected with the pin seat, and the other end of the pin spring adjacent to the press connecting head is fixedly connected with the inner pin head.

[0010] As preferred, the lower alignment plane is provided with two positioning protrusions symmetrically arranged along the axis of the press connecting head, the top of the positioning protrusion is provided with a plurality of pockets, the pockets are provided with balls for contacting the upper alignment plane, and the connecting head body is provided with two accommodating grooves corresponding to the positioning protrusions, when the positioning protrusions are completely arranged in the corresponding accommodating grooves, the lower alignment plane is abutted with the upper alignment plane.

[0011] As preferred, the circumferential ring groove is arranged on the side wall of the press connecting head, and the highest point of the circumferential ring groove is arranged at a height lower than the lowest point of the positioning hole.

[0012] As preferred, the press connecting head is connected with the press through a screw, the strong magnet is connected with the quick-change pressing head body through a cross groove countersunk screw, and the lower end of the cross groove countersunk screw is arranged above the bottom surface of the strong magnet.

[0013] The utility model discloses the beneficial effect is: utilize strong magnet automatic prepositioning to bearing, through the stroke cylinder of bearing press machine lower, can press into corresponding mounting hole position, when needing to press the bearing of different types, can take down original quick-change pressing head body and replace new quick-change pressing head body, and the replacement operation is convenient, and after replacement, can be relatively easily guarantee that quick-change pressing head body is installed in place, and the adaptability is good, and the overall efficiency is high, can protect upper alignment plane and lower alignment plane, prevent its fast wear and tear, have the protection structure of anti -drop, can protect quick-change pressing head body, other structures on quick-change pressing head body and the structure such as the parts below. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structure schematic diagram of the utility model;

[0015] Figure 2 It is Figure 1 The enlarged view of A in the middle

[0016] Figure 3 is Figure 1 is an enlarged view of B in the figure;

[0017] Figure 4 is Figure 1 is an enlarged view of C in the figure;

[0018] Figure 5 is a structural schematic view of the positioning pin of the utility model;

[0019] Figure 6 is a structural schematic view of the quick-change pressure head body of the utility model.

[0020] Reference signs: press connecting head 1, positioning hole 1a, connecting head body 1.1, accommodating groove 1.1a, circumferential ring groove 1b, auxiliary positioning head 1.2, quick-change pressure head body 2, sleeve groove 2a, lower approval plane 2b, auxiliary groove 2c, avoiding groove 2d, threaded hole 2e, strong magnet 201, ball 202.1, positioning protrusion 202, pin spring 301, pin seat 302, pin hole 302a, positioning pin 303, inner pin head 303.1, middle pin section 303.2, outer pin handle 303.3, screw 4, cross slot countersunk screw 5, stroke cylinder 6. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] As Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 shown, a bearing press-fit quick-change pressure head structure comprises a press connecting head 1, a plurality of positioning holes 1a opened on the side wall of the press connecting head 1, a quick-change pressure head body 2 that can be sleeved on the press connecting head 1 and a strong magnet 201 arranged at the lower end of the quick-change pressure head body 2, and the bottom surface of the strong magnet 201 is horizontal.

[0023] The press connecting head 1 comprises a connecting head body 1.1 connected with the press, the bottom surface of the connecting head body 1.1 is an upper approval plane, the quick-change pressure head body 2 is provided with a sleeve groove 2a for being sleeved on the connecting head body 1.1, the sleeve groove 2a is opened at the upper end of the quick-change pressure head body 2, and the groove bottom surface of the sleeve groove 2a is a lower approval plane 2b that can be abutted with the upper approval plane;

[0024] Further comprising a plurality of positioning pin structures corresponding to the positioning holes 1a one by one, in the corresponding positioning hole 1a and the positioning pin structure: the positioning pin structure comprises a pin spring 301, a pin seat 302 provided on the quick-change pressure head body 2 and a positioning pin 303 in sliding connection with the pin seat 302, one end of the pin spring 301 is fixed opposite to the pin seat 302, the other end of the pin spring 301 is fixed opposite to the positioning pin 303, the positioning pin 303 comprises an inner pin head 303.1 which can be inserted into the positioning hole 1a, a middle pin section 303.2 connected with the inner pin head 303.1 and an outer pin handle 303.3 connected with the middle pin section 303.2. The sliding direction of the positioning pin is horizontal, and the inner pin head, the middle pin section and the outer pin handle are connected in turn.

[0025] The press connecting head 1 is arranged on the stroke cylinder 6 of the bearing press, and the parts are arranged below. The bearing mounting hole on the part is upward. When the sealing type bearing needs to be installed, the quick-change pressure head body 2 matched with the sealing type bearing to be installed can be installed on the press connecting head 1. The installation mode is that the worker pulls out each outer pin handle 303.3 (that is, pulls out each positioning pin 303, at this time the inner pin head 303.1 is retracted, and the pin spring 301 is compressed), and then the quick-change pressure head body 2 is completely sleeved on the press connecting head 1 (the sleeve groove 2a is sleeved on the connecting head body 1.1), and then each outer pin handle 303.3 can be released. Under the action of the pin spring 301, the positioning pin 303 starts to move towards the axis of the press connecting head 1. If the positioning pin 303 is just opposite to the positioning hole 1a at this time, the inner pin head 303.1 will be inserted into the positioning hole 1a. If the positioning pin 303 is not opposite to the positioning hole 1a at this time, the inner pin head 303.1 will be stopped on the circumferential outer side wall of the press connecting head 1. The worker rotates the quick-change pressure head body 2 along the axis of the press connecting head 1, so that the positioning pin 303 reaches the position opposite to the positioning hole 1a. Under the action of the pin spring 301, the inner pin head 303.1 will be inserted into the positioning hole 1a. When the inner pin head 303.1 is inserted into the positioning hole 1a, the connection between the quick-change pressure head body 2 and the press connecting head 1 is completed. The upper and lower reference planes 2b are in close contact, which can ensure that the axis of the quick-change pressure head body 2 is vertical, that is, the bottom surface of the strong magnet 201 is horizontal.

[0026] Then the sealing type bearing to be installed can be adsorbed on the bottom surface of the strong magnet 201. The closed end area of the sealing type bearing is relatively larger than that of the ordinary bearing, which is suitable for being in close contact with and being attracted and fixed by the bottom surface of the strong magnet 201 (for different sealing type bearings, the size and shape of the adsorption surface (bottom surface) of the strong magnet 201 are different). Then the bearing press can be started, the stroke cylinder 6 is lowered, the press connecting head 1, the quick-change pressure head body 2 and the sealing type bearing are lowered, so that the sealing type bearing can be pressed into the bearing mounting hole on the part below (before the stroke cylinder 6 is lowered, the part below is fixed in advance, and the bearing mounting hole on the part below is coaxially arranged with the sealing type bearing).

[0027] When different types of sealing type bearings need to be installed, the quick-change pressure head body 2 needs to be replaced. The installation method of the quick-change pressure head body 2 has been described in the foregoing, and the disassembly method is as follows: the worker pulls out each outer pin handle 303.3 (that is, pulls each positioning pin 303, at this time the inner pin head 303.1 is retracted, and the inner pin head 303.1 is away from the positioning hole 1a), and then the quick-change pressure head body 2 can be moved downward to make the quick-change pressure head body 2 away from the press connecting head 1.

[0028] As shown in Figure 1 , Figure 6 , the press connecting head 1 further comprises an auxiliary positioning head 1.2 arranged at the bottom of the connecting head body 1.1, and the quick-change pressure head body 2 is provided with an auxiliary groove 2c which is open to the groove bottom surface of the sleeve groove 2a and an avoidance groove 2d which is open to the groove bottom surface of the auxiliary groove 2c, and the auxiliary positioning head 1.2 is matched with the auxiliary groove 2c.

[0029] The auxiliary positioning head 1.2 can further assist in guiding and positioning, and the avoidance groove 2d avoids contact with the bottom surface of the auxiliary positioning head 1.2, so that the machining precision requirement of the bottom surface of the auxiliary positioning head 1.2 is reduced, and the cost is reduced.

[0030] As shown in Figure 1 , Figure 2 , Figure 5 , Figure 6 , the number of positioning holes 1a is two, and the two positioning holes 1a are symmetrically arranged along the axis of the press connecting head 1, and the two positioning holes 1a are coaxially arranged, when the lower reference plane 2b and the upper reference plane are in contact, in the corresponding positioning hole 1a and the positioning pin structure: the quick-change pressure head body 2 is provided with a threaded hole 2e which is in communication with the positioning hole 1a, the pin seat 302 is threadedly connected with the threaded hole 2e, the pin seat 302 is provided with a pin hole 302a which is in communication with the threaded hole 2e and coaxially arranged with the positioning hole 1a, the pin spring 301 is arranged in the pin hole 302a, the pin spring 301 is sleeved outside the middle pin body, the end of the pin spring 301 away from the press connecting head 1 is fixedly connected with the pin seat 302, and the end of the pin spring 301 adjacent to the press connecting head 1 is fixedly connected with the inner pin head 303.1. The outer pin handle is always outside the pin hole.

[0031] The pin seat 302 is threadedly connected with the threaded hole 2e, which is beneficial to the maintenance or replacement of the positioning pin structure, and the pin spring 301 is arranged in the pin hole 302a, which can protect the pin spring 301 to a certain extent.

[0032] As shown in Figure 1 , Figure 4As shown, the lower approval plane 2b is provided with two positioning protrusions 202 symmetrically arranged along the axis of the press connecting head 1, the top of the positioning protrusions 202 is provided with a plurality of pockets, and the pockets are provided with balls 202.1 for contacting the upper approval plane. The connecting head body 1.1 is provided with two accommodation grooves 1.1a corresponding to the positioning protrusions 202. When the positioning protrusions 202 are completely in the corresponding accommodation grooves 1.1a: the lower approval plane 2b abuts against the upper approval plane, and the inner pin head 303.1 in the positioning pin structure is aligned with the corresponding positioning hole 1a.

[0033] As mentioned above, the abutment of the upper approval plane and the lower approval plane 2b can ensure that the axis of the quick-change press head body 2 is vertical, that is, the bottom surface of the powerful magnet 201 is horizontal. As mentioned above, when the quick-change press head body 2 is completely fitted on the press connecting head 1, if the positioning pin 303 is not aligned with the positioning hole 1a at this time, the inner pin head 303.1 will be in contact with the circumferential outer side wall of the press connecting head 1. The worker rotates the quick-change press head body 2 along the axis of the press connecting head 1 to make the positioning pin 303 reach the position of aligning with the positioning hole 1a. Under the action of the pin spring 301, the inner pin head 303.1 will be inserted into the positioning hole 1a. This means that there will be frequent friction between the upper approval plane and the lower approval plane 2b, which will easily lead to wear of the upper approval plane and the lower approval plane 2b, and will affect the most important horizontal positioning accuracy.

[0034] In view of this, in the present scheme, when the quick-change press head body 2 is fitted on the press connecting head 1, as long as the positioning protrusions 202 are not aligned with the accommodation grooves 1.1a, at the beginning, a slight upward force is applied, and the balls 202.1 on the positioning protrusions 202 will contact the upper approval plane. At this time, rotating the quick-change press head body 2 along the axis of the press connecting head 1 is actually rolling friction between the balls 202.1 and the upper approval plane, and the friction is relatively small, which can protect the upper approval plane, and the lower approval plane 2b does not participate in the friction process. When the positioning protrusions 202 are aligned with the accommodation grooves 1.1a, the positioning protrusions 202 and the balls 202.1 thereon can enter the accommodation grooves 1.1a. When the positioning protrusions 202 are completely in the corresponding accommodation grooves 1.1a: the lower approval plane 2b abuts against the upper approval plane, and the inner pin head 303.1 in the positioning pin structure is aligned with the corresponding positioning hole 1a. At this time, under the action of the pin spring 301, the inner pin head 303.1 is inserted into the positioning hole 1a.

[0035] As shown in the accompanying drawings, Figure 1 As shown, the side wall of the press connecting head 1 is provided with a circumferential ring groove 1b, and the highest point of the circumferential ring groove 1b is lower than the lowest point of the positioning hole 1a.

[0036] When the quick-change punch body 2 is installed, if the positioning pin 303 (the inner pin head 303.1) has not been inserted into the positioning hole 1a, the worker may accidentally release the quick-change punch body 2 due to various factors, and the quick-change punch body 2 may be lowered and separated from the press connector 1 (fall off), causing the quick-change punch body 2, other structures on the quick-change punch body 2, and the structures of the parts below to be damaged. In the scheme, when the above situation occurs, during the lowering of the quick-change punch body 2, at a certain moment, the inner pin head 303.1 reaches a position facing the circumferential ring groove 1b, and under the action of the pin spring 301, the head of the inner pin head 303.1 enters the circumferential ring groove 1b, so that the quick-change punch body 2 can be hung, and the quick-change punch body 2 will not fall.

[0037] As shown in Figure 1 , Figure 3 The press connector 1 is connected with the press through a screw 4, the strong magnet 201 is connected with the quick-change punch body 2 through a cross slot countersunk screw 5, and the lower end of the cross slot countersunk screw 5 is above the bottom surface of the strong magnet 201.

[0038] The cross slot countersunk screw 5 is above the bottom surface of the strong magnet 201, which can avoid the influence of the cross slot countersunk screw 5 on the adsorption between the sealing type bearing and the strong magnet 201.

[0039] The above has carried out the detailed introduction to the embodiment of the utility model, the principle and implementation mode of the utility model have been described in this paper by applying specific examples, the above embodiment is only used for helping understanding the method and core idea of the utility model; at the same time, for the technical personnel in the field, according to the idea of the utility model, the specific implementation mode and application range will have the change, and the above-mentioned, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A bearing press-fit quick-change press head structure, characterized by, The press connecting head comprises a connecting head body connected with a press, a bottom surface of the connecting head body is an upper reference plane, the quick-change die head body is provided with a sleeve groove for sleeving on the connecting head body, the sleeve groove is opened at an upper end of the quick-change die head body, and a groove bottom surface of the sleeve groove is a lower reference plane which can abut against the upper reference plane. The press connecting head further comprises an auxiliary positioning head provided at a bottom portion of the connecting head body, the quick-change die head body is provided with an auxiliary groove opened at the groove bottom surface of the sleeve groove and an avoiding groove opened at a groove bottom surface of the auxiliary groove, and the auxiliary positioning head is matched with the auxiliary groove. The number of the positioning holes is two, the two positioning holes are symmetrically arranged along an axis of the press connecting head, and the two positioning holes are coaxially arranged.

2. The bearing press-fit quick-change press head structure according to claim 1, characterized in that, When the lower reference plane abuts against the upper reference plane, in the corresponding positioning hole and the positioning pin structure: the quick-change die head body is provided with a threaded hole communicated with the positioning hole, the pin seat is threadedly connected with the threaded hole, the pin seat is provided with a pin hole communicated with the threaded hole and coaxially arranged with the positioning hole, the pin spring is arranged in the pin hole, the pin spring is sleeved outside the middle pin body, one end of the pin spring away from the press connecting head is fixed opposite to the pin seat, and the other end of the pin spring adjacent to the press connecting head is fixed opposite to the inner pin head.

3. The bearing press-fit quick-change press head structure according to claim 1, characterized in that, The lower reference plane is provided with two positioning protrusions symmetrically arranged along the axis of the press connecting head, a top portion of each positioning protrusion is provided with a plurality of pockets, a ball for contacting the upper reference plane is arranged in each pocket, the connecting head body is provided with two accommodating grooves corresponding to the positioning protrusions, and when the positioning protrusions are completely arranged in the corresponding accommodating grooves, the lower reference plane abuts against the upper reference plane.

4. The bearing press quick change press head structure of claim 1 or 2 or 3, characterized in that, The side wall of the press connecting head is provided with a circumferential ring groove, and a highest point of the circumferential ring groove is arranged at a height lower than a lowest point of the positioning hole.

5. The bearing press quick change press head structure of claim 1 or 2 or 3, wherein, The press connecting head is connected with the press through a screw, the strong magnet is connected with the quick-change die head body through a cross groove countersunk screw, and a lower end of the cross groove countersunk screw is arranged above a bottom surface of the strong magnet.

6. The bearing press quick change press head structure of claim 1 or 2 or 3, wherein, ​

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