A piston rod small-circumference grinding device

Abstract

This utility model discloses a piston rod small outer diameter grinding device, comprising: a support part; a sliding bracket longitudinally disposed on the support part; a drive motor capable of reciprocating along the sliding bracket; a rubber wheel disposed at the power output end of the drive motor; and two sets of rotating parts symmetrically disposed on the support part, both sets of rotating parts capable of rotation; wherein, the piston rod is rotatably placed on the two sets of rotating parts, the central axis of the rubber wheel is parallel to the piston rod, and the rubber wheel can selectively push the piston rod to rotate on the two sets of rotating parts. This utility model has the advantages of improving grinding coaxiality and meeting batch processing requirements.

Description

Technical Field

[0001] This utility model relates to the field of piston rod processing technology, and more specifically, to a piston rod small outer diameter grinding device. Background Technology

[0002] The small outer diameter of the piston rod in a shock absorber is usually a crucial part for mounting the piston valve body. Poor coaxiality between the small and large outer diameters of the piston rod affects the operating accuracy of the shock absorber, causing abnormal noise and consequently impacting its lifespan. Typically, the coaxiality of the small outer diameter of the piston rod, when machined on a mass-produced lathe, can only be controlled within the range of 0.05-0.1mm. For high-end shock absorbers and high-precision piston rods, the coaxiality of the small outer diameter is generally required to be controlled within 0.02mm. Ordinary turning cannot meet the requirements for mass production. Utility Model Content

[0003] This invention designs and develops a small outer diameter grinding device for piston rods, which improves grinding coaxiality and meets the requirements of batch processing, and can control the coaxiality of the small outer diameter within 0.02mm.

[0004] The technical solution provided by this utility model is as follows:

[0005] A piston rod small outer diameter grinding device, comprising:

[0006] Support section; and

[0007] A sliding bracket is longitudinally disposed on the support portion;

[0008] A drive motor that can reciprocate along the sliding bracket;

[0009] A rubber wheel is located at the power output end of the drive motor;

[0010] Two sets of rotating parts are symmetrically arranged on the support part, and both sets of rotating parts can rotate on their own axis;

[0011] The piston rod is rotatably placed on two sets of rotating parts, the central axis of the rubber wheel is parallel to the piston rod, and the rubber wheel can selectively push the piston rod to rotate on the two sets of rotating parts.

[0012] Preferably, the support portion includes:

[0013] Install base plate;

[0014] The mounting base is vertically mounted on the mounting plate.

[0015] 3. The piston rod small outer diameter grinding device as described in claim 2, wherein the sliding bracket is an L-shaped structure, and one end of the sliding bracket is fixed on the mounting base.

[0016] Preferably, it also includes:

[0017] A pressure rod cylinder is longitudinally mounted on the other end of the sliding bracket.

[0018] A linear guide rail is longitudinally mounted on the sliding bracket;

[0019] A slider, which is slidably mounted on the linear guide rail.

[0020] Preferably, it also includes:

[0021] The mounting bracket has an L-shaped structure, with one end fixed to the power output end of the pressure rod cylinder and the other end fixed to the slider.

[0022] The drive motor is horizontally fixed on the mounting bracket.

[0023] Preferably, both sets of rotating parts include:

[0024] Roller bracket, which is fixed to the mounting base plate;

[0025] Two idlers are symmetrically arranged at intervals on the roller bracket, and both idlers are rotatable.

[0026] Preferably, the small outer diameter machining portion of the piston rod is provided corresponding to the grinding wheel.

[0027] Preferably, it also includes:

[0028] A positioning bracket is fixed to the mounting base plate, and the positioning bracket is collinear with the two roller brackets;

[0029] A positioning rod, which can be selectively moved or fixed on the positioning bracket, and the positioning rod can abut against the piston rod at the other end away from the grinding wheel.

[0030] Preferably, it also includes:

[0031] A groove is provided on the mounting base plate for positioning;

[0032] The positioning bracket, the two roller brackets, and the mounting base are all located on the upper part of the groove.

[0033] Preferably, it also includes:

[0034] The top screw, which is inserted vertically into the positioning bracket, is used to fix the positioning rod.

[0035] The beneficial effects of this utility model are as follows:

[0036] The piston rod small outer diameter grinding device provided by this utility model ensures the stability of the piston rod during the processing by combining the drive motor and the support roller, and ensures coaxiality by combining the positioning rod and the support roller, thereby improving the grinding coaxiality and meeting the requirements of batch processing. It can control the small outer diameter coaxiality within 0.02mm. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of one side of the piston rod small outer diameter grinding device of this utility model.

[0038] Figure 2 This is a schematic diagram of the other side of the piston rod small outer diameter grinding device of this utility model.

[0039] Figure 3 This is a schematic diagram of the assembly structure of the mounting base plate described in this utility model.

[0040] Figure 4 This is a schematic diagram of the overall assembly structure of the piston rod small outer diameter grinding device of this utility model.

[0041] Figure 5 This is a side view of the assembly structure of the piston rod small outer diameter grinding device of this utility model. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0043] like Figures 1-3 As shown, this utility model provides a small outer diameter grinding device for piston rods, comprising:

[0044] The components include a support, two sets of rotating parts 110, a piston rod fixing part 120, a sliding bracket 130, a sliding part, a drive motor 162, and a rubber wheel 163.

[0045] The support includes a mounting base plate 101 and a mounting base 102. The mounting base plate 101 is placed on the ground and its height is close to that of the external cylindrical grinding machine. The mounting base 102 is vertically arranged on one side of the mounting base plate 101 and is used to mount the sliding bracket 130.

[0046] like Figures 4-5 As shown, two sets of rotating parts 110 are symmetrically spaced on the mounting base plate 101 to support the piston rod 200. A piston rod fixing part 120 is provided between the rotating part 110 and the mounting base 102 to fix the distal end of the piston rod 200.

[0047] The sliding bracket 130 has an L-shaped structure, and one end of the sliding bracket 130 is fixed on the mounting base 102, so that the sliding bracket 130 is arranged longitudinally at intervals on the upper part of the mounting base plate 101.

[0048] A sliding part is provided longitudinally on the inner side of the sliding bracket 130, so that the drive motor 162 can perform longitudinal reciprocating motion along the sliding bracket 130.

[0049] A rubber wheel 163 is fixed at the power output end of the drive motor 162. The rubber wheel 163 is set at the center of the two sets of rotating parts 110, so that the rubber wheel 163 is perpendicular to the piston rod 200. The central axis of the rubber wheel 163 is parallel to the piston rod 200, and the rubber wheel 163 can selectively push the piston rod 200 to rotate on the two sets of rotating parts 110.

[0050] Both sets of rotating parts 110 include roller brackets 111 and two idlers 112. The roller brackets 111 are symmetrically spaced apart, and the center line of the roller brackets 111 is collinear with the center line of the mounting base 102, so that the power output end of the drive motor 162 and the roller brackets 111 are also on the same plane of motion. The two idlers 112 are symmetrically spaced apart on the roller brackets 111, and both idlers 112 can rotate, reducing the resistance to the rotation of the piston rod 200.

[0051] The piston rod fixing part 120 includes a positioning bracket 121 and a positioning rod 122. The positioning bracket is disposed between the roller bracket 111 and the mounting base 102, and the center line of the piston rod fixing part 120 is collinear with the center line of the roller bracket 111 and the mounting base 102. The positioning rod 122 can be selectively moved or fixed on the positioning bracket 121. The positioning rod 122 can abut against the far end of the piston rod 200, and a movable ball is provided at the end of the positioning rod 122 near the piston rod 200.

[0052] The sliding part includes a linear guide rail 141 and a slider 142. The linear guide rail 141 is arranged longitudinally on the sliding bracket 130, and the slider 142 is matched and installed on the linear guide rail 141.

[0053] An L-shaped mounting bracket 161 is provided on the drive motor 162. One end of the mounting bracket 161 is fixed to the power output end of the pressure rod cylinder 150, the pressure rod cylinder 150 is fixed to the other end of the sliding bracket 130, and the other end of the mounting bracket 161 is fixed to the slider 142, so that the pressure rod cylinder 150 can drive the drive motor 162 to move on the sliding bracket 130.

[0054] The small outer diameter machining part of the piston rod 200 is correspondingly provided with the grinding wheel 300.

[0055] In this embodiment, the positioning rod 122 is fixed by a set screw provided on the top of the positioning bracket 121.

[0056] In this embodiment, in order to ensure ease of installation, a groove is provided on the mounting base plate 101, and the positioning bracket 121, the two roller brackets 111 and the mounting base 102 are all located on the upper part of the groove.

[0057] The working process is as follows: the pressure rod cylinder extends, driving the drive motor to move towards the piston rod. The drive motor drives the rubber wheel to rotate the piston rod on the roller by relying on downward friction. At the same time, the grinding wheel on the external cylindrical grinding machine moves towards the small outer diameter part to grind. After grinding, the grinding wheel retracts, the pressure rod cylinder retracts, driving the drive motor to lift up, and the workpiece stops rotating.

[0058] The piston rod small outer diameter grinding device provided by this utility model ensures the stability of the piston rod during the processing by combining the drive motor and the support roller, and ensures coaxiality by combining the positioning rod and the support roller, thereby improving the grinding coaxiality and meeting the requirements of batch processing. It can control the small outer diameter coaxiality within 0.02mm.

[0059] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A device for grinding a small cylindrical surface of a piston rod, characterized in that include: Support section; as well as A sliding bracket is longitudinally disposed on the support portion; A drive motor that can reciprocate along the sliding bracket; A rubber wheel is located at the power output end of the drive motor; Two sets of rotating parts are symmetrically arranged on the support part, and both sets of rotating parts can rotate on their own axis; The piston rod is rotatably placed on two sets of rotating parts, the central axis of the rubber wheel is parallel to the piston rod, and the rubber wheel can selectively push the piston rod to rotate on the two sets of rotating parts; The support portion includes: Install base plate; The mounting base is vertically mounted on the mounting base plate; Both sets of rotating parts include: Roller bracket, which is fixed to the mounting base plate; Two idlers are symmetrically arranged at intervals on the roller bracket, and both idlers are rotatable.

2. The piston rod cylinder grinding device according to claim 1, characterized in that The sliding bracket has an L-shaped structure, and one end of the sliding bracket is fixed to the mounting base.

3. The piston rod small outer diameter grinding device as described in claim 2, characterized in that, Also includes: A lever cylinder is longitudinally mounted on the other end of the sliding bracket; A linear guide rail is longitudinally mounted on the sliding bracket; A slider, which is slidably mounted on the linear guide rail.

4. The piston rod small outer diameter grinding device as described in claim 3, characterized in that, Also includes: The mounting bracket has an L-shaped structure, with one end fixed to the power output end of the pressure rod cylinder and the other end fixed to the slider. The drive motor is horizontally fixed on the mounting bracket.

5. The piston rod small outer diameter grinding device as described in claim 4, characterized in that, The small outer diameter machining part of the piston rod is correspondingly set with the grinding wheel.

6. The piston rod small outer diameter grinding device as described in claim 5, characterized in that, Also includes: A positioning bracket is fixed to the mounting base plate, and the positioning bracket is collinear with the two roller brackets; A positioning rod, which can be selectively moved or fixed on the positioning bracket, and the positioning rod can abut against the piston rod at the other end away from the grinding wheel.

7. The piston rod small outer diameter grinding device as described in claim 6, characterized in that, Also includes: A groove is provided on the mounting base plate for positioning; The positioning bracket, the two roller brackets, and the mounting base are all located on the upper part of the groove.

8. The piston rod small outer diameter grinding device as described in claim 7, characterized in that, Also includes: The top screw, which is inserted vertically into the positioning bracket, is used to fix the positioning rod.

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