Base plate polishing and positioning tool

Abstract

The utility model discloses a base plate polishing and positioning tool which comprises a base plate feeding tool, the base plate feeding tool comprises a material table, and base plate jacking mechanisms are assembled and connected to the two sides of the material table respectively. Each base plate jacking mechanism comprises a jacking frame used for jacking the bottom of the base plate and further comprises a plurality of jacking air cylinders installed at the bottom of the material table, and a piston rod of each jacking air cylinder is fixedly provided with a jacking rod. The base plate polishing and positioning tool further comprises a plurality of supporting plates used for being supported at the bottom of the base plate, supporting parts are integrally formed at the upper ends of the supporting plates, and limiting supporting grooves matched with the base plate are formed in the supporting parts. The base plate polishing and positioning tool further comprises a pressing rod mechanism, the pressing rod mechanism comprises a pressing rod, and in the positioning process, the pressing rod is downwards pressed on the base plate. The tool is high in universality, and the technical defects that an existing tool is complex in locking operation, large in unlocking difficulty and poor in universality are effectively overcome.

Description

Technical Field

[0001] This utility model belongs to the field of pad processing technology, and in particular relates to a pad grinding and positioning fixture. Background Technology

[0002] The mounting plate is a crucial component of fastening systems on high-speed rail, heavy-haul freight, and urban rail transit lines. The main structure of the mounting plate includes a rectangular plate body and integrally formed support bosses on both sides of the bottom of the plate body, with the support bosses having a U-shaped structure. The plate body has several mounting holes for installation at the equipment's mounting location.

[0003] The main function of the pad is to maintain the stability of the track fastening system and meet the requirements of track safety.

[0004] During the production and processing of pads, irregularly shaped pads are mainly formed by casting. After casting, the surface of the pads has many burrs. Pads with burrs not only cannot be easily installed in the installation position, but the formation of burrs can also easily injure operators during operation.

[0005] Meanwhile, the formation of burrs can easily lead to mismatch with the position of the mounting holes and slots, making installation impossible.

[0006] Therefore, the pad must be cleaned and polished to remove the burrs and roughness on the surface so that the surface quality and dimensions meet the requirements.

[0007] During the polishing process, the polishing force of the polishing wheel causes the pad to become unstable. Specifically, the bottom of the pad has a support boss, and the formation of the support boss makes it difficult for the pad to be placed stably.

[0008] Therefore, in the existing technology, the pad is locked by locking fixtures, such as by using the pressing edge method. However, the drawbacks are also obvious: in order to cope with the high intensity of grinding, it is necessary to lock it fully. After grinding, the locking structure needs to be loosened, which makes the operation too cumbersome. In order to maintain stability during the operation, the locking force of the nut on the locking structure is large, which makes the operation more difficult when loosening the workpiece.

[0009] Therefore, the existing tooling is complicated to operate, and locking and unlocking are time-consuming, resulting in low grinding efficiency of the pad and high difficulty in operation.

[0010] At the same time, due to the differences in the structure of different types of pads, multiple types of clamps are often required to lock the pads in actual work, resulting in poor versatility of the clamps and making them very inconvenient to use. Utility Model Content

[0011] Based on the above background, the purpose of this utility model is to provide a pad grinding and positioning fixture.

[0012] To achieve the above objectives, the present invention adopts the following technical solution:

[0013] A pad grinding and positioning fixture includes a pad loading fixture, wherein the pad loading fixture includes a material table, and a pad lifting mechanism is respectively assembled and connected to both sides of the material table.

[0014] The pad lifting mechanism includes an upper lifting frame for lifting the bottom of the pad, and the pad lifting mechanism also includes several upper lifting cylinders installed at the bottom of the material platform, with the piston rod of the upper lifting cylinder fixedly installed with an upper lifting rod.

[0015] The pad grinding and positioning fixture also includes several support plates for supporting the bottom of the pad. The upper end of the support plate is integrally formed with a support part, and the support part is provided with a limiting support groove that cooperates with the pad.

[0016] The pad grinding and positioning fixture also includes a pressure rod mechanism, which includes a pressure rod that presses down on the pad during the positioning process.

[0017] Preferably, a pair of support plates are fixedly installed on the left and right sides of the top of the material platform, with the support plate being supported between the support plates.

[0018] Preferably, the pad has four bends, and the bends are respectively limited and supported in the limiting support grooves.

[0019] Preferably, two upper-mounted cylinders are installed on the left and right sides of the material platform, respectively, with a front-to-back interval;

[0020] The pad grinding and positioning fixture includes two upper support frames for supporting the bottom of the pad, which are respectively fixed between the tops of the upper support rods on both sides.

[0021] Preferably, the pad grinding and positioning fixture further includes a control pressure rod mechanism for pressing down the pad and a stroke indicator switch mechanism for releasing the pad.

[0022] Preferably, the travel indicator switch mechanism includes a switch body, on which a switch arm is mounted;

[0023] After the pad is loaded, the pad presses down the switch arm, and the travel indicator switch mechanism instructs the grinding mechanism to grind. After grinding is completed, the pad is unloaded, the switch arm loses the contact pressure, and the switch arm resets to instruct the grinding mechanism to stop grinding.

[0024] Preferably, the top of the material platform is fixedly connected to an arc-shaped guide plate adapted to the switch arm, and the arc-shaped guide plate and the upper top frame form a switch arm guide space. During the process of the pad pressing the switch arm, the switch arm swings within the switch arm guide space.

[0025] Preferably, a switch mounting base for mounting the switch body is fixedly connected to the top position of the material platform.

[0026] Preferably, a U-shaped base is fixedly connected to the bottom of the material platform.

[0027] Preferably, a U-shaped base is fixedly connected to the bottom of the material platform.

[0028] This utility model has the following beneficial effects:

[0029] 1. The tooling structure utilizes a support plate whose shape is adapted to the pad, allowing the pad to be supported and positioned using a support groove on the top of the support plate. The protrusions on both sides of the pad's bottom are positioned on the outer side of the support plate. This design ensures that the pad is adequately supported and positioned using a simple structure, and that the support plate's positioning and blocking protrusions prevent the pad from swaying due to polishing force during grinding. Furthermore, the above device allows for easy material discharge after processing. Therefore, the entire tooling is not only easy to operate and provides stable material clamping, but also facilitates convenient material discharge.

[0030] 2. The tooling disclosed in this utility model has high versatility. It can lock and position any pad structure with a planar main structure during the working process, effectively solving the technical defects of existing tooling such as complicated locking operation, difficult unlocking, and poor tooling versatility. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the dispersed structure in an embodiment of the present utility model;

[0033] Figure 2 This is an embodiment of the present utility model. Figure 1 A structural diagram from another perspective;

[0034] Figure 3 This is a schematic diagram of the structure of the support plate with a limiting support groove in an embodiment of the present utility model;

[0035] Figure 4 This is a schematic diagram of the structure of the pad in the carboxyl state in an embodiment of this utility model;

[0036] Figure 5 This is a schematic diagram of the limit switch activation mechanism in an embodiment of this utility model.

[0037] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0040] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0041] Example 1

[0042] like Figure 1-5 As shown, a pad grinding and positioning fixture includes a pad loading fixture, which includes a material platform 3. The bottom of the material platform 3 is fixedly connected to a U-shaped base, which is fixedly installed on a workbench in the existing manner via the U-shaped base.

[0043] In order to facilitate the support of pad 1 during the processing and locking process, and to facilitate the lifting of pad 1 for material discharge after processing, thereby increasing processing efficiency.

[0044] The material platform 3 is equipped with a pad-mounting mechanism on its left and right sides respectively.

[0045] The specific structure of the top mechanism on the pad is as follows:

[0046] The pad plate lifting mechanism includes an upper lifting frame 531 for lifting the bottom of the pad plate. The pad plate lifting mechanism also includes several upper lifting cylinders 51 installed at the bottom of the material platform 3. The piston rod 52 of the upper lifting cylinder 51 is fixedly installed with an upper lifting rod 53.

[0047] Specifically, two upper-mounted cylinders 51, spaced apart front to back, are installed on the left and right sides of the material platform 3 (the cylinder barrels are fixedly installed at the bottom of the material platform 3, and the piston rods are slidably connected to the material platform 3); the pad grinding and positioning fixture includes two upper-mounted frames 531 for supporting the bottom of the pad 1, and the upper-mounted frames 531 are respectively fixed between the tops of the upper-mounted rods 53 on both sides. That is, the upper-mounted frames 531 on the left and right sides are parallel to each other. The upper-mounted frames 531 are rod-shaped and are fixed to the top of the upper-mounted rods 53 by welding.

[0048] Meanwhile, in order to support the four corners of the pad, the above-mentioned pad grinding and positioning fixture also includes four support plates 4 for supporting the bottom of the pad 1 (specifically, a pair of support plates 4 are fixedly installed on the left and right sides of the top of the material table 3, with a front-to-back interval, and the pad 1 is supported between the support plates 4).

[0049] The upper end of the aforementioned support plate 4 is integrally formed with a support part 41, and the support part 41 is provided with a limiting support groove 411 that cooperates with the pad plate 1; when the pad plate 1 is supported on the support part 41, the corner position of the pad plate 1 is limited in the limiting support groove 411 and blocked at the edge of the groove.

[0050] The aforementioned pad grinding and positioning fixture also includes a pressure rod mechanism, which includes a pressure rod 2. During the positioning process, the pressure rod 2 presses down on the pad 1. Specifically, similar to existing blank pressing methods, the pressure rod 2 is mounted on a drive structure such as a cylinder. During operation, the pressure rod 2 is driven down by the cylinder drive structure until it touches the pad.

[0051] Grinding pad 1 according to the existing grinding method, after the grinding is completed, the pressure rod 2 is raised and the pad 1 is released. At this time, the upper lifting cylinder 51 lifts the upper lifting frame 531 to realize the working process, and the processed pad 1 is lifted to disengage from the limit support groove 411 to achieve rapid unloading.

[0052] In the above structure, the support plate 1 is supported and limited by the limiting support groove 411 opened on the top of the support plate 4, which is adapted to the shape of the pad 1. The bosses 11 on both sides of the bottom of the pad 1 are limited to the outside of the support plate 4. In this way, the working process is realized. First, the simple structure fully supports and limits the pad 1. Second, the support plate 4 limits and blocks the bosses 11, avoiding the pad from swaying left and right due to the polishing force during the grinding process. At the same time, the above device allows for material discharge after processing. Therefore, the entire tooling is not only easy to operate, but also provides stable material pressing and convenient material discharge.

[0053] Meanwhile, the above-mentioned tooling is highly versatile, and can be locked and positioned as long as the main structure of the pad is planar, effectively solving the technical defects of existing tooling such as complex locking operation, difficult unlocking, and poor tooling versatility.

[0054] Example 2

[0055] like Figure 1-5 As shown, this embodiment is based on the structure of embodiment 1, and is similar to the existing method of pressing down or lifting the control lever 2. According to the existing method, the above-mentioned pad grinding positioning fixture also includes a stroke indicator switch mechanism 7 for controlling the grinding operation of the grinding equipment. The stroke indicator switch mechanism 7 is a conventional stroke indicator switch mechanism 7 disclosed in the prior art, and its main structure includes a switch body, on which a switch arm is installed.

[0056] Similar to the existing travel indicator switch in structure and working principle, during operation, after the pad 1 is loaded, the pad 1 presses down the switch arm, and the travel indicator switch mechanism 7 instructs the grinding mechanism to grind (specifically, under normal circumstances, the switch arm is in position one, but when the pad is loaded, the pad presses down and the switch arm switches from position one to position two. At this time, as in the existing method, the infrared sensor on the machine tool senses the travel indicator switch mechanism 7, and then the grinding equipment works). After grinding is completed, after the pad 1 is lifted and the material is removed, the switch arm loses the contact pressure, and the switch arm (similar to the existing travel indicator switch structure, the switch arm is reset by the spring installed on the switch. Specifically, during the process of pressing down the switch arm, the spring is stretched, and after losing the contact pressure of the pad 1, as in the existing travel switch, the switch arm automatically resets after losing the contact pressure. After reset, the infrared sensor can no longer sense the travel indicator switch mechanism 7 where the external device 2 is located. At this time, the grinding mechanism is instructed to stop grinding.

[0057] Meanwhile, the top of the aforementioned material platform 3 is fixedly connected to an arc-shaped guide plate 6 that is adapted to the switch arm. The arc-shaped guide plate 6 and the upper top frame 531 form a switch arm guide space. During the switch arm switching process (from position one to position two), the switch arm swings within the switch arm guide space.

[0058] Meanwhile, a switch mounting base 71 for mounting the switch body is fixedly connected to the top of the material platform 3.

[0059] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A positioning fixture for grinding a pad, characterized in that, The device includes a pad loading fixture, which includes a loading platform, and a pad lifting mechanism is respectively assembled and connected to both sides of the loading platform. The pad lifting mechanism includes an upper lifting frame for lifting the bottom of the pad, and the pad lifting mechanism also includes several upper lifting cylinders installed at the bottom of the material platform, with the piston rod of the upper lifting cylinder fixedly installed with an upper lifting rod. The pad grinding and positioning fixture also includes several support plates for supporting the bottom of the pad. The upper end of the support plate is integrally formed with a support part, and the support part is provided with a limiting support groove that cooperates with the pad. The pad grinding and positioning fixture also includes a pressure rod mechanism, which includes a pressure rod that presses down on the pad during the positioning process.

2. The pad grinding and positioning fixture according to claim 1, characterized in that, A pair of support plates are fixedly installed on the left and right sides of the top of the material platform, with a back-to-back spacing, and a pad is supported between the support plates.

3. The pad grinding and positioning fixture according to claim 2, characterized in that, The pad has four bends, and each bend is supported within a limiting support groove.

4. The pad grinding and positioning fixture according to claim 1, characterized in that, Two upper-mounted cylinders with a front-to-back spacing are installed on the left and right sides of the material platform, respectively. The pad grinding and positioning fixture includes two upper support frames for supporting the bottom of the pad, which are respectively fixed between the tops of the upper support rods on both sides.

5. The pad grinding and positioning fixture according to claim 1, characterized in that, A U-shaped base is fixedly connected to the bottom of the material platform.

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