A swashplate structure fitting and fitting device and a swashplate structure fitting and fitting method

Abstract

This invention discloses a swashplate-based lapping device for lapping a swashplate and a swashplate base. The bottom surface of the swashplate has a first arc-shaped curved surface, and the top surface of the swashplate base has a second arc-shaped curved surface that mates with the first arc-shaped curved surface. The device includes: a drive component for driving the swashplate to reciprocate on the swashplate base; a support assembly for supporting the drive component; and a base assembly for fixing the swashplate base. This invention ensures close contact between the swashplate and the swashplate base, resulting in more uniform pressure contact on the arc surface. It solves the problem of uneven force distribution and difficulty in ensuring contour accuracy caused by manual operation, greatly improving machining accuracy and efficiency. Furthermore, this structure converts rotary motion into reciprocating linear motion, making operation more convenient.

Description

Technical Field

[0001] This invention belongs to the field of hydraulic pump and motor parts manufacturing technology, and relates to the field of curved surface finishing technology. Specifically, it is a swashplate structure fitting and lapping device and a swashplate structure fitting and lapping method. Background Technology

[0002] Currently, swashplate structures with arc-shaped supports are not very common in the domestic hydraulic pump and motor market, and therefore their processing technology is not as mature as that of foreign countries. The most common structure between the swashplate and its support is a bearing bush that mates with it to form a well-sealed friction pair. However, as pumps and motors become increasingly miniaturized, the resulting space compression leads to smaller bearing bushes, making bearing bush processing and installation relatively difficult.

[0003] Experimental verification revealed that using materials with similar compositions but different grades for the friction pair at the swashplate and its support surface can form a good friction pair, and the material is less prone to seizing during frequent relative motion. Current technologies often use manual lamination to complete the arc surface between the swashplate and its seat, which cannot guarantee machining accuracy, has low work efficiency, and places a high workload on operators. Therefore, it is more important whether the lamination device can ensure the smooth movement of this friction pair and whether the two components have good wear resistance. Summary of the Invention

[0004] This invention provides a swashplate structure fitting apparatus and method to solve the problems of limited fitting accuracy and unstable machining of swashplates and swashplate seats in the prior art. To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simple form as a prelude to the detailed description that follows.

[0005] Specifically, the present invention provides a swashplate structure fitting device for fitting a swashplate and a swashplate seat. The bottom surface of the swashplate is provided with a first arc-shaped curved surface, and the top surface of the swashplate seat is provided with a second arc-shaped curved surface that matches the first arc-shaped curved surface. The device includes: a driving component for driving the swashplate to reciprocate on the swashplate seat, a support seat assembly for supporting the driving component, and a base assembly for fixing the swashplate seat.

[0006] Based on the above scheme, the driving component includes a rocker assembly for rotary motion, a transmission shaft assembly for converting rotary motion into linear reciprocating motion, and a sliding block for driving the swashplate to move relative to the swashplate seat.

[0007] Based on the above scheme, the rocker assembly includes a rocker arm and a handle, with the handle mounted on the end of the rocker arm for rotating the rocker arm.

[0008] Based on the above scheme, the drive shaft assembly includes a drive shaft for connecting the rocker arm, a bearing support assembly for supporting the rotation of the drive shaft, and a connecting rod for connecting the drive shaft and the sliding lever.

[0009] Based on the above scheme, one end of the transmission shaft is provided with a disc surface, and an eccentric positioning pin is provided on the disc surface for driving the connecting rod to perform linear reciprocating motion.

[0010] The end of the drive shaft furthest from the disk surface is connected to the rocker arm.

[0011] Based on the above scheme, a first cylindrical pin for connecting the connecting rod and the sliding block is also included;

[0012] The sliding block includes a slider for sliding on a support rod and a spherical support for connecting to a swashplate. The slider is sleeved on the support rod and connected to a connecting rod via a first cylindrical pin. The slider can slide along the length of the support rod, and the spherical support is connected to the swashplate.

[0013] Based on the above scheme, the bearing support assembly includes a bearing support and two deep groove ball bearings;

[0014] The bearing support is a U-shaped structure, and the open end of the U-shaped structure has two through holes for the transmission shaft to pass through. The two deep groove ball bearings are installed on the opposite outer sides of the open end.

[0015] The two through holes and the two deep groove ball bearings are coaxially arranged.

[0016] Based on the above scheme, the support base assembly includes a support rod for guiding the sliding block to slide and a support frame for supporting the bearing support, wherein the bottom of both the support rod and the support frame are fixedly connected to the base plate.

[0017] Based on the above scheme, the base assembly includes a base plate and a positioning seat for limiting the swashplate seat. The positioning seat is provided with a second cylindrical pin for limiting the swashplate seat, and the positioning seat is provided with screws for fastening the swashplate seat in the horizontal direction.

[0018] A method for fitting and grinding a swashplate structure, using the aforementioned swashplate structure fitting and grinding device, firstly fixes the swashplate seat on the positioning seat, then applies grinding paste to the second arc-shaped surface of the swashplate seat, places the swashplate on the swashplate seat, and connects the bushing hole of the swashplate to the spherical support part of the sliding block. By rotating the handle, the drive shaft converts the rotary motion into linear reciprocating motion through the connecting rod and the sliding block, causing the swashplate and the swashplate seat to move relative to each other.

[0019] The technical solutions provided by the embodiments of the present invention may include the following beneficial effects:

[0020] This invention ensures that the first arc-shaped surface of the swashplate and the second arc-shaped surface of the swashplate seat can achieve a complete fit, making the pressure contact of the arc surfaces more uniform, the force evenly distributed, and the contour guaranteed, greatly improving the processing accuracy and efficiency; this structure can also convert the rotational motion of the rocker arm into the linear reciprocating motion of the connecting rod, making it more convenient to operate during use.

[0021] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0023] Figure 1 This is a schematic diagram of the swashplate structure grinding device in Example 1;

[0024] Figure 2 This is a cross-sectional view of a swashplate structure grinding device in Embodiment 1;

[0025] Figure 3 yes Figure 2 Enlarged view (including drive components);

[0026] Figure 4 This is a schematic diagram of the swashplate in Example 1;

[0027] Figure 5 This is a schematic diagram of the swashplate (including the first arc-shaped surface) structure in Embodiment 1;

[0028] Figure 6 This is a schematic diagram of the swashplate seat in Example 1;

[0029] Figure 7 This is a schematic diagram of the sliding block in Example 1. Detailed Implementation

[0030] The following description and accompanying drawings fully illustrate specific embodiments described herein to enable those skilled in the art to practice them. Some embodiments may include or substitute parts and features of other embodiments. The scope of the embodiments herein encompasses the entire scope of the claims and all available equivalents thereof. Throughout this document, the terms “first,” “second,” etc., are used only to distinguish one element from another without requiring or implying any actual relationship or order between the elements. Indeed, a first element can also be referred to as a second element, and vice versa. Furthermore, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a structure, apparatus, or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a structure, apparatus, or device. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the structure, apparatus, or device that includes said element. The various embodiments described herein are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments; similar or identical parts between embodiments can be referred to interchangeably.

[0031] The terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used in this document to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are used solely for the convenience of describing the document and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description herein, unless otherwise specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two elements; they can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0032] In this document, unless otherwise stated, the term "multiple" means two or more.

[0033] In this article, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0034] In this article, the term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0035] Where there is no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0036] Example 1

[0037] like Figure 1-3 As shown, a swashplate structure grinding device is provided for grinding a swashplate 1 and a swashplate seat 2. The bottom surface of the swashplate 1 is a first arc-shaped curved surface 110, and the top surface of the swashplate seat 2 is provided with a second arc-shaped curved surface 210 that cooperates with the first arc-shaped curved surface 110. The device includes: a driving component 3 for driving the swashplate 1 to reciprocate on the swashplate seat 2, a support base assembly 4 for supporting the driving component 3, and a base assembly 5 for fixing the swashplate seat 2.

[0038] Among them, such as Figure 4-5 As shown, the bottom surface of the swashplate 1 has two parallel first arcuate surfaces 110, as follows: Figure 6 As shown, the swash plate seat 2 has two second arcuate surfaces 210 that cooperate with the two first arcuate surfaces 110. A groove 220 is provided between the two second arcuate surfaces 210 to satisfy the reciprocating motion of the swash plate 1 in the extension direction of the second arcuate surfaces 210 of the swash plate seat 2. The groove 220 can be used to accommodate the protruding structure at the bottom of the swash plate 1. The rest of the swash plate 1 and the swash plate seat 2 are commercially available conventional structures and are not innovative in this invention, so they will not be described in detail here.

[0039] As a specific implementation plan, such as Figure 2-3 As shown, the drive component 3 includes a rocker assembly 310 for rotary motion, a transmission shaft assembly 320 for converting rotary motion into linear reciprocating motion, and a sliding block 330 for driving the swashplate 1 to move relative to the swashplate seat 2.

[0040] Specifically, the rocker assembly 310 includes a rocker arm 311 and a handle 312. The handle 312 is mounted on the end of the rocker arm 311 for rotating the rocker arm 311. In this embodiment, both the rocker arm 311 and the handle 312 can adopt conventional commercially available structures and are not innovative features of this invention, so they will not be described in detail here. As an alternative solution, the rocker arm 311 can be replaced with a pulley or sprocket, and a motor can transmit torque to the pulley or sprocket connected to the drive shaft 321 via a belt or chain, thus freeing up manual labor.

[0041] Specifically, the drive shaft assembly 320 includes a drive shaft 321 for connecting the rocker arm 311, a bearing support assembly 322 for supporting the rotation of the drive shaft 321, and a connecting rod 323 for connecting the drive shaft 321 and the sliding block 330. Specifically, one end of the drive shaft 321 is connected to the rocker arm 311 and the other end is connected to the connecting rod 323. One end of the drive shaft 321 is provided with a disc surface 321-1, on which an eccentric positioning pin 6 is provided. Specifically, it also includes an eccentric locating pin 6 for connecting one end of the connecting rod 323 to the drive shaft 321 and a first cylindrical pin 7 for connecting the other end of the connecting rod 323 to the sliding block 330; specifically, the bearing support assembly 322 includes a bearing support 322-1 and two deep groove ball bearings 322-2. The bearing support 322-1 has a U-shaped structure, and two through holes for the drive shaft 321 to pass through are opened on the open end of the U-shaped structure. The two deep groove ball bearings 322-2 are installed on the opposite outer surfaces of the open end. The two through holes and the two deep groove ball bearings... The transmission shaft 321 is coaxially arranged with two deep groove ball bearings 322-2. One end of the transmission shaft 321 passes through two deep groove ball bearings 322-2 and is fixedly connected to the rocker arm 311, while the other end is limited by the disc surface 321-1. The rocker arm 311 is fixed to the transmission shaft 321 by an elastic pin. The handle 312 drives the rocker arm 311 to rotate, and the transmission shaft 321 rotates with the rotation of the rocker arm 311. The connecting rod 323 makes an eccentric movement with the disc surface 321-1 of the transmission shaft 321. At this time, the transmission shaft 321 converts its rotary motion into linear reciprocating motion through the connecting rod 323 and the sliding block 330.

[0042] As a specific implementation, the support assembly 4 includes a support rod 410 for guiding the sliding block 330 to slide and a support frame 420 for supporting the bearing support 322-1, wherein the bottoms of both the support rod 410 and the support frame 420 are fixedly connected to the base plate 510. This design uses two deep groove ball bearings 322-2 to distribute the force at the point where the bearing support 322-1 experiences the greatest supporting force, and then uses screws 530 to connect the bearing support 322-1 to the support rod 410 and the support frame 420 respectively from below, making the structure more stable.

[0043] Based on the above solutions, such as Figure 7As shown, the sliding block 330 includes a slider 331 for sliding on the support rod 410 and a spherical support 332 for connecting to the swashplate 1. The spherical support 332 is connected to the bushing hole 120 of the swashplate 1. The slider 331 is sleeved on the support rod 410 and connected to the connecting rod 323 through the first cylindrical pin 7. The slider 331 can slide along the length direction of the support rod 410. Specifically, the rotation of the disc surface 321-1 drives the eccentric positioning pin 6 to rotate, thereby driving the connecting rod 323 to drive the slider 331 to slide on the support rod 410 under the drive of the eccentric positioning pin 6. When the spherical support 332 is connected to the side hole of the swashplate 1, the transition is smooth, changing from sliding friction to rolling friction, which greatly reduces the resistance during movement.

[0044] Based on the above scheme, the rotary reciprocating motion of the swashplate 1 relative to the swashplate seat 2 is transformed into the linear reciprocating motion of the sliding block 330. The sliding block 331 is connected to the eccentric positioning pin 6 on the transmission shaft 321 through the connecting rod 323, and the linear reciprocating motion of the sliding block 330 is transformed into the rotational motion of the transmission shaft 321. The lever arm is extended by the rocker arm 311, making it more comfortable and less strenuous for employees to use.

[0045] As a specific implementation, the base assembly 5 includes a base plate 510 and a positioning seat 520 for limiting the swashplate seat 2. The positioning seat 520 and the base plate 510 are fixedly connected. The positioning seat 520 is provided with a second cylindrical pin 8 for limiting the swashplate seat 2. The positioning seat 520 is provided with screws 530 for fastening the swashplate seat 2 in the horizontal direction. Specifically, the swashplate seat 2 is installed on the positioning seat 520 and then fastened by the screws 530.

[0046] Specifically, the positioning seat 520 is a circular structure with a circular groove, which matches the bottom of the swashplate seat 2. The side wall of the positioning seat 520 is provided with a threaded hole for screw 530 to be screwed in, and the screw 530 can abut against the bottom of the swashplate seat 2.

[0047] As a specific implementation scheme, it also includes a weight 9 set on the top of the swash plate 1 for pressing the first arc-shaped surface 110 and the second arc-shaped surface 210. The weight 9 is installed at the location of the thrust plate above the swash plate 1 in the prior art to ensure that the first arc-shaped surface 110 of the swash plate 1 and the second arc-shaped surface 210 of the swash plate seat 2 have sufficient friction. The direction of gravity is always vertically downward. By increasing the gravity, the friction between the friction pairs is increased to achieve the grinding purpose, ensuring the form and position tolerance requirements and reducing the problem of surface profile deviation caused by uneven human force and high frequency of direction changes.

[0048] Example 2

[0049] Based on the swashplate structure grinding device of Embodiment 1, such as Figure 1-7As shown, this embodiment provides a method for fitting and grinding a swashplate structure, including:

[0050] When assembling the swash plate 1 and swash plate seat 2, first fix the swash plate seat 2 to the positioning seat 520 with screws 530. Then connect the bushing hole 120 of the swash plate 1 component to the spherical support part 332 of the sliding block 330. After applying evenly polishing paste to the second arc-shaped curved surface 210 of the swash plate seat 2, place the swash plate 1 on the swash plate seat 2. Replace the thrust plate with a weight 9 at the thrust plate installation position to ensure sufficient friction between the contact surface of the swash plate 1 and the swash plate seat 2. When in use, turn the handle 312, and the drive shaft 321 will convert the rotary motion into linear reciprocating motion through the connecting rod 323 and the sliding block 330, so that the swash plate 1 can rotate around the swash plate seat 2 through a certain angle, forming relative motion between the friction pairs.

[0051] In summary, this invention ensures that the swashplate 1 arc and the swashplate seat 2 can achieve complete fit under sufficient pressure, making the pressure contact of the arc surface more uniform. This solves the problem of uneven force distribution caused by manual operation, which makes it difficult to guarantee the contour. It greatly improves the processing accuracy and efficiency. This structure converts linear reciprocating motion into rotary motion, making it more convenient to operate during use.

[0052] This invention is not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A swash plate structure lapping device for lapping a swash plate and a swash plate holder, a bottom surface of the swash plate being provided with a first curved surface, and a top surface of the swash plate holder being provided with a second curved surface which cooperates with the first curved surface, characterized in that, include: A drive component for driving the swashplate to reciprocate on the swashplate holder, a support assembly for supporting the drive component, and a base assembly for fixing the swashplate holder. The drive component includes a rocker assembly for rotary motion, a drive shaft assembly for converting rotary motion into linear reciprocating motion, and a sliding block for driving the swashplate relative to the swashplate seat. The rocker assembly includes a rocker arm and a handle, the handle being mounted at the end of the rocker arm for rotating the rocker arm; The drive shaft assembly includes a drive shaft for connecting the rocker arm, a bearing support assembly for supporting the rotation of the drive shaft, and a connecting rod for connecting the drive shaft and the sliding lever. One end of the drive shaft is provided with a disc surface, and an eccentric positioning pin is provided on the disc surface for driving the connecting rod to perform linear reciprocating motion. The end of the drive shaft away from the disk surface is connected to the rocker arm; It also includes a first cylindrical pin for connecting the connecting rod and the sliding block; The sliding block includes a slider for sliding on the support rod and a spherical support for connecting to the swashplate. The slider is sleeved on the support rod and connected to the connecting rod via a first cylindrical pin. The slider can slide along the length of the support rod, and the spherical support is connected to the swashplate. The bearing support assembly includes a bearing support and two deep groove ball bearings; The bearing support is a U-shaped structure, and the open end of the U-shaped structure has two through holes for the transmission shaft to pass through. The two deep groove ball bearings are installed on the opposite outer sides of the open end. The two through holes and the two deep groove ball bearings are coaxially arranged; It also includes a weight set on top of the swashplate for pressing the first and second arcuate surfaces, the weight being installed above the thrust plate on the swashplate.

2. The swashplate structure grinding device as described in claim 1, characterized in that, The support assembly includes a support rod for guiding the sliding block to slide and a support frame for supporting the bearing support, wherein the bottom of both the support rod and the support frame are fixedly connected to the base plate.

3. The swashplate structure grinding device as described in claim 2, characterized in that, The base assembly includes a base plate and a positioning seat for limiting the swashplate seat. The positioning seat is provided with a second cylindrical pin for limiting the swashplate seat, and the positioning seat is provided with screws for fastening the swashplate seat in the horizontal direction.

4. A method for fitting and grinding a swashplate structure, characterized in that, Using the swash plate structure grinding device as described in any one of claims 1-3, the swash plate seat is first fixed on the positioning seat, and grinding paste is applied to the second arc-shaped surface of the swash plate seat. Then, the swash plate is placed on the swash plate seat, and the bushing hole of the swash plate is connected to the spherical support of the sliding block. By rotating the handle, the drive shaft converts the rotary motion into linear reciprocating motion through the connecting rod and the sliding block, so that the swash plate and the swash plate seat move relative to each other.

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