Clamping device for spherical roller end face grinding

Abstract

The utility model relates to the technical field of bearing roller machining, in particular to a clamping device for spherical roller end face grinding, which comprises a workpiece carrying disc, and a plurality of mounting holes for placing rollers are uniformly and annularly formed in the disc surface of the workpiece carrying disc, so that when the workpiece carrying disc is driven to rotate, the roller end faces exposed out of the mounting holes can be ground by an external grinding wheel; the mounting hole is a stepped hole, the stepped hole comprises an upper hole section, a middle hole section and a lower hole section, the hole diameters of the upper hole section, the middle hole section and the lower hole section are sequentially reduced, the hole wall of the upper hole section is provided with internal threads and is adaptively screwed with a screw plug, and the end face of the screw plug is provided with a through hole of which the hole diameter is smaller than that of the middle hole section; the clamping device can stably clamp the spherical roller and is suitable for machining of various bearing rollers.

Description

Technical Field

[0001] This utility model relates to the field of bearing roller processing technology, and in particular to a clamping device for grinding the end face of spherical rollers. Background Technology

[0002] As shown in the Chinese invention patent CN114473675A, which discloses a double-end face grinding device for bearing rollers, the use of end face grinders or precision grinding machines to process the end faces of cylindrical rollers is already a relatively common technology. For vertical double-end face grinders, the equipment is generally a vertical structure with upper and lower grinding wheels. The working principle is that the upper grinding wheel descends according to the pressure set in the program and contacts the workpiece placed in the workpiece carrier on the lower grinding wheel. At the same time, according to the requirements of the processing technology, the upper and lower grinding wheels and the workpiece carrier move independently according to the rotation direction and rotation speed set in the program to complete the grinding process. The working method involves placing a workpiece carrier plate on the lower grinding wheel, and using the workpiece carrier plate drive motor and its drive mechanism to complete the forward and reverse rotation of the workpiece carrier plate within the corresponding speed range. Chinese invention patent with announcement number CN112355759A even discloses a precision cylindrical roller double-end face grinding planetary gear set mechanism, which enables the workpiece carrier plate to perform planetary movement. The mounting hole of the workpiece carrier plate is a through hole, and the cylindrical rollers are installed in the through hole according to a certain number and arrangement rules. Then, they rotate and revolve according to the set rotation direction and rotation speed to complete the grinding process.

[0003] However, existing workpiece carriers use through holes to hold cylindrical rollers for rotational machining. When machining spherical rollers or self-aligning rollers with curved walls, the existing through holes are unstable, making the spherical rollers prone to tipping over. This not only causes the end face of the spherical roller to fail to be machined, but also damages the upper and lower grinding wheels, resulting in huge losses. Utility Model Content

[0004] In order to overcome the shortcomings in the background technology and solve the existing technical problems, this utility model discloses a clamping device for grinding the end face of spherical rollers, which can stably clamp spherical rollers and is suitable for processing various bearing rollers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A clamping device for grinding the end face of a spherical roller includes a workpiece carrier. The surface of the workpiece carrier is uniformly provided with a plurality of mounting holes for placing rollers, so that when the workpiece carrier is driven to rotate, the end face of the roller exposed in the mounting holes can be ground by an external grinding wheel. The mounting holes are stepped holes, which include an upper hole section, a middle hole section and a lower hole section with successively decreasing hole diameters. The upper hole section has an internal thread on its hole wall and is adapted to be screwed with a screw plug. The end face of the screw plug has a through hole with a diameter smaller than that of the middle hole section.

[0007] Furthermore, the through hole and the lower hole of the screw plug have the same diameter, and the thickness of the screw plug is less than the depth of the upper hole.

[0008] Furthermore, the outer end face of the screw plug is provided with at least two disassembly holes.

[0009] Furthermore, both the upper port of the lower hole section and the lower port of the through hole of the screw plug are chamfered.

[0010] Furthermore, a cushioning washer is bonded to the chamfered area.

[0011] Furthermore, both the workpiece carrier and the screw plug are made of engineering plastic.

[0012] Furthermore, the workpiece carrier is provided with an external gear ring, which is driven to rotate by an external drive mechanism through gear transmission.

[0013] By adopting the technical solution described above, this utility model has the following beneficial effects:

[0014] This utility model discloses a clamping device for grinding the end face of spherical rollers. After a barrel-shaped spherical roller (wider in the middle and narrower at both ends) is placed into the mounting hole, the step at the upper end of the lower hole section supports the arc-shaped sidewall of the spherical roller, allowing the lower end of the spherical roller to protrude from the lower end of the lower hole section, facilitating grinding wheel processing. Similarly, the screw plug screwed into the upper hole section also supports the arc-shaped sidewall of the spherical roller, clamping and positioning it to prevent it from tipping over and damaging the grinding wheel during processing. In summary, this utility model not only expands the processing product types of equipment by clamping and positioning spherical rollers in addition to the processing of cylindrical rollers, filling the gap in grinding the end faces of spherical rollers using traditional grinding machines and precision grinding machines, but also provides a positioning approach for the end face grinding of other non-cylindrical roller products, verifying the feasibility of processing the end faces of rollers made of non-magnetic and non-metallic materials. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the implementation structure of the workpiece carrier disk;

[0016] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure;

[0017] Figure 3 This is a cross-sectional view of the screw plug.

[0018] In the diagram: 1. Workpiece carrier; 2. Mounting hole; 201. Upper hole section; 202. Middle hole section; 203. Lower hole section; 3. Plug; 301. Through hole; 302. Disassembly hole. Detailed Implementation

[0019] The technical solution of this utility model will be described below with reference to the accompanying drawings of the embodiments of this utility model. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this utility model for the convenience of describing this utility model, and do not indicate or imply that the device or element referred to must have a specific orientation.

[0020] Combined with appendix Figure 1-3 The clamping device for grinding the end face of spherical rollers includes a workpiece carrier 1. The surface of the workpiece carrier 1 is evenly provided with multiple mounting holes 2 for placing rollers, so that when the workpiece carrier 1 is driven to rotate, the end face of the roller exposed in the mounting holes 2 can be ground by an external grinding wheel. Generally, the roller is installed in the workpiece carrier outside the machine and then pushed into the area between the upper and lower grinding wheels inside the machine tool. The grinding wheel is arranged side by side with the workpiece carrier 1 and will also rotate actively to grind the end face of the roller. There are various forms of driving rotation of the workpiece carrier 1. The workpiece carrier 1 is provided with an external gear ring and is driven to rotate by an external drive mechanism through gear transmission.

[0021] Mounting hole 2 is a stepped hole, comprising an upper section 201, a middle section 202, and a lower section 203 with progressively decreasing diameters. The middle section 202 must ensure that the spherical roller can be inserted at its maximum diameter, and that when the arc-shaped sidewall of the spherical roller abuts against the upper end of the lower section 203, the lower end of the spherical roller can protrude from the lower end of the lower section 203, facilitating grinding by the grinding wheel below close to the end face. The upper section 201 has internal threads on its wall for threaded connection. There is a screw plug 3, and the end face of the screw plug 3 is provided with a through hole 301 with a diameter smaller than that of the middle hole section 202, so as to ensure that when the screw plug 3 is screwed into the upper hole section 201, it can press against the spherical roller for clamping and positioning. In order to prevent clamping damage to the spherical roller, both the workpiece carrier plate 1 and the screw plug 3 can be made of engineering plastic material. Furthermore, by providing at least two annular disassembly holes 302 on the outer end face of the screw plug 3, it is convenient to insert external tools into the disassembly holes 302 to screw the screw plug 3.

[0022] To improve processing efficiency, the two ends of the spherical roller are usually processed simultaneously. That is, grinding wheels are set on both the upper and lower sides of the workpiece carrier 1. As needed, the through hole 301 of the screw plug 3 and the hole diameter of the lower hole section 203 are the same. That is, when the screw plug 3 is pressed against the side wall of the spherical roller, the upper end of the spherical roller can also be exposed through the through hole 301 to facilitate grinding. The thickness of the screw plug 3 needs to be lower than the depth of the upper hole section 201 so that the screw plug 3 will not be exposed and interfere with the grinding of the grinding wheel.

[0023] To further prevent damage to the roller surface during tightening, the upper port of the lower hole section 203 that mainly contacts the side wall of the spherical roller and the lower port of the through hole 301 of the screw plug 3 are both provided with chamfers. Preferably, a buffer washer is bonded to the chamfer for buffering.

[0024] To implement the clamping device for grinding the end face of the spherical roller described in this utility model, it is only necessary to insert the spherical roller into the mounting hole 2 from the upper hole section 201, so that the radial protrusion of its lower outer side wall abuts against the upper port of the lower hole section 203, and then screw the plug 3 into the upper hole section 201, so that the lower port of the through hole 301 abuts against the radial protrusion of the upper outer side wall of the spherical roller. This will stabilize the spherical roller and prevent it from tipping over when the workpiece carrier 1 rotates and the grinding wheel grinds the end face of the spherical roller.

[0025] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A clamping device for grinding the end face of a spherical roller, comprising a workpiece carrier (1), wherein the surface of the workpiece carrier (1) is uniformly provided with a plurality of mounting holes (2) for placing rollers, so that when the workpiece carrier (1) is driven to rotate, the end face of the roller exposed in the mounting holes (2) can be ground by an external grinding wheel, characterized in that: The mounting hole (2) is a stepped hole, which includes an upper hole section (201), a middle hole section (202) and a lower hole section (203) with successively decreasing hole diameters. The upper hole section (201) has an internal thread on its hole wall and is fitted with a screw plug (3). The end face of the screw plug (3) has a through hole (301) with a hole diameter smaller than that of the middle hole section (202).

2. The clamping device for grinding the end face of spherical rollers according to claim 1, characterized in that: The through hole (301) and the lower hole section (203) of the screw plug (3) have the same diameter, and the thickness of the screw plug (3) is lower than the depth of the upper hole section (201).

3. The clamping device for grinding the end face of spherical rollers according to claim 1, characterized in that: The outer end face of the screw plug (3) is provided with at least two disassembly holes (302).

4. The clamping device for grinding the end face of spherical rollers according to claim 1, characterized in that: The upper port of the lower hole section (203) and the lower port of the through hole (301) of the screw plug (3) are both chamfered.

5. The clamping device for grinding the end face of spherical rollers according to claim 4, characterized in that: A cushioning washer is bonded to the chamfered area.

6. The clamping device for grinding the end face of spherical rollers according to claim 1, characterized in that: Both the workpiece carrier (1) and the screw plug (3) are made of engineering plastic.

7. The clamping device for grinding the end face of spherical rollers according to claim 1, characterized in that: The workpiece carrier (1) is provided with an external gear ring, which is driven to rotate by an external drive mechanism through gear transmission.

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