Processing fixture for upper bearing plate

Abstract

The utility model relates to the field of rail bridge part machining technology discloses a kind of processing clamps of upper support plate, including clamping box, locating baffle and locking pressing plate, the inside hollow of clamping box, clamping hole is equipped in the top of clamping box, the periphery of clamping hole is equipped with multiple locating baffles and locking pressing plates, and locating baffle and locking pressing plate are used to clamp upper support plate. One clamps many, without special tooling for different processes, high universality, clamping is convenient, and machining precision is high.

Description

Technical Field

[0001] This utility model relates to the field of railway bridge parts processing technology, specifically to a processing fixture for an upper support plate. Background Technology

[0002] The upper bearing plate is a crucial component of spherical bearings connecting rail bridges. It is a core component ensuring the smooth and safe operation of trams, and once installed in a rail bridge, it is virtually irreplaceable. Its main functions include: reliably transferring the enormous load of the bridge superstructure to the piers / abutments; providing a sliding interface (movable bearing) for horizontal displacements caused by temperature, load, and deformation; accommodating rotational deformation at the bridge beam ends; and serving as a robust connection foundation between the bearing and the main beam.

[0003] Chinese patent document CN214993024U discloses a spherical steel support for cast-in-place beams to prevent detachment, including an upper support assembly and a lower pre-embedded assembly; the upper support assembly includes an upper anchor and an upper support plate, a flat wear-resistant plate, a spherical crown liner, a spherical wear-resistant plate and a lower support plate arranged in sequence; the upper anchor is fixedly connected to the upper support plate and is used to embed into the beam body.

[0004] Chinese patent document CN110125467A discloses a method for machining an upper support plate assembly of a spherical support, which requires the installation of a fixture and a workpiece: the fixture is placed on a special machine tool and fixed, and then the workpiece is installed on the fixture, aligned, and pressed firmly.

[0005] Due to the irregular structure of the upper support plate, batch processing is required. When tightening and fixing it on a special machine tool, the vertical anchors on the upper support plate will interfere with the machine tool's processing. Both the upper and lower surfaces of the upper support plate need to be milled. At the same time, special positioning fixtures and jigs need to be made for different equipment and processes. The vertical anchors will also affect the clamping, resulting in improper clamping and affecting the processing accuracy. Utility Model Content

[0006] This utility model provides a machining fixture for an upper support plate that is easy to clamp and has high machining accuracy. It is characterized by including a clamping box, a positioning baffle and a locking plate. The clamping box is hollow inside. The top of the clamping box is provided with a clamping hole. Multiple positioning baffles and locking plates are provided around the clamping hole. The positioning baffles and locking plates are used to clamp the upper support plate.

[0007] Preferably, the clamping box includes a supporting base plate, a side supporting plate, and a supporting top plate. The middle part of the supporting top plate is the clamping hole. During the clamping process, the anchor of the upper support plate can be inserted into the interior of the clamping box through the clamping hole, which facilitates clamping and does not interfere with the machining of the machine tool.

[0008] Furthermore, the top support plate is provided with an adjusting component for adjusting the clamping height of the upper support plate.

[0009] Furthermore, the support base plate is provided with a fixing component for connection with the machine tool.

[0010] To facilitate the clamping and positioning of the upper support plate, the positioning baffle is provided with a transverse clamping element.

[0011] Furthermore, the locking plate is provided with a longitudinal clamping member, which is also connected to the support top plate. The locking plate and the support top plate cooperate to achieve longitudinal clamping of the upper support plate.

[0012] Preferably, two locking plates are arranged opposite each other on the support top plate. The locking plates are L-shaped, with the vertical part of the locking plates movably inserted into the support top plate, and the horizontal part of the locking plates being arranged parallel to the support top plate.

[0013] This utility model has the following beneficial effects:

[0014] 1. In the existing technology, special positioning fixtures and jigs need to be made for different equipment and processes. The lifting, clamping and transfer process of the upper support plate is cumbersome and complicated. After adopting the jig of this utility model, the processing of the upper and lower surfaces of the upper support plate can be clamped. It is multi-purpose and does not require the customization of special fixtures for different processes. It has high versatility, is easy to clamp, shortens the machining cycle, improves efficiency and has low manufacturing cost.

[0015] 2. High machining accuracy: Through multi-directional clamping and fixing, the left and right offset and up and down movement of the upper support plate are avoided during machining. At the same time, the clamping height can be changed according to machining needs to improve machining accuracy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the upper support plate;

[0017] Figure 2 This is a schematic diagram of an embodiment of the machining fixture for the upper support plate of this utility model;

[0018] Figure 3 for Figure 2 Side view;

[0019] Figure 4 for Figure 2 Top view;

[0020] Figure 5 A schematic diagram for machining the lower surface of the upper support plate;

[0021] Figure 6 for Figure 5 Side view. Detailed Implementation

[0022] The following detailed description illustrates the specific implementation methods:

[0023] The reference numerals in the accompanying drawings include: clamping box 1, supporting base plate 101, side supporting plate 102, supporting top plate 103, adjusting screw 104, fixing bolt 105, positioning baffle 2, transverse clamping screw 201, locking pressure plate 3, longitudinal locking screw 301, vertical part 302, horizontal part 303, clamping hole 4, upper support plate 5, anchoring steel bar 501, center positioning block 502, end positioning block 503, and limiting spherical crown liner 504.

[0024] Example 1

[0025] like Figure 1-6 As shown, a machining fixture for an upper support plate includes a clamping box 1, a positioning baffle 2, and a locking pressure plate 3. The clamping box 1 is hollow inside, and a clamping hole 4 is provided on the top of the clamping box 1. Eight positioning baffles 2 and two locking pressure plates 3 are provided around the clamping hole 4. The positioning baffles 2 and locking pressure plates 3 are used to clamp the upper support plate 5.

[0026] The clamping box 1 includes a supporting base plate 101, a side supporting plate 102, and a supporting top plate 103. The middle part of the supporting top plate 103 is the clamping hole 4. During the clamping process, the anchoring steel bar 501 of the upper support plate 5 can be inserted into the interior of the clamping box 1 through the clamping hole 4, which facilitates clamping and does not interfere with the processing of the machine tool.

[0027] The upper support plate 5 is provided with anchoring steel bars 501, a central positioning block 502, an end positioning block 503, and a limiting spherical crown liner 504. The side of the upper support plate 5 with the anchoring steel bars 501 is the upper surface, and the side with the central positioning block 502 is the lower surface. When it is necessary to process both sides of the upper surface of the upper support plate 5, the anchoring steel bars 501 face upwards, and the positioning baffle 2 and the locking pressure plate 3 clamp the upper support plate 5. When it is necessary to process the lower surface of the upper support plate 5, the anchoring steel bars 501 are inserted into the clamping box 1, which does not affect the clamping or interfere with the machine tool processing.

[0028] The top support plate 103 is provided with adjusting screws 104 for adjusting the clamping height of the upper support plate 5.

[0029] The support base plate 101 is provided with 6 fixing bolts 105 for connection with the machine tool.

[0030] The locking plate 3 is provided with two longitudinal locking screws 301, which are connected to the supporting top plate 103. The locking plate 3 and the supporting top plate 103 cooperate to achieve longitudinal clamping of the upper support plate 5.

[0031] Two positioning baffles 2 are respectively provided on the four sides of the supporting top plate 103, and each positioning baffle 2 is provided with a transverse clamping screw 201.

[0032] Two locking plates 3 are arranged opposite each other on the supporting top plate 103 with the clamping hole 4 as the center. The locking plates 3 are L-shaped. The vertical part 302 of the locking plates 3 is movably inserted into the supporting top plate 103, and the horizontal part 303 of the locking plates 3 is arranged parallel to the supporting top plate 103.

[0033] The upper support plate 5 is installed into the clamping box 1. The upper and lower machining planes of the upper support plate 5 are adjusted, leveled, and corrected by adjusting screws 104 and positioning baffles 2. Then, the locking plate 3, longitudinal locking screws 301, and transverse clamping screws 201 are used to fix, press, and lock it. Then, the special machine tool power head is moved horizontally. According to the horizontal line of the corrected and pressed tooling and the upper and lower planes of the upper support plate 5, the two power heads are moved horizontally to align with the positions of the two step planes to be machined. The power heads are locked and fixed securely. A trial milling is performed first to check whether the coplanarity of the two machined step planes meets the product accuracy requirements. If it does not meet the requirements, the upper and lower positions of the two power heads are adjusted appropriately. The trial milling of the two planes is qualified.

[0034] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An upper bolster plate machining fixture characterized by, It includes a clamping box, a positioning baffle, and a locking plate. The clamping box is hollow inside. The top of the clamping box is provided with a clamping hole. Multiple positioning baffles and locking plates are provided around the clamping hole. The positioning baffles and locking plates are used to clamp the upper support plate.

2. The machining fixture for an upper bracket plate according to claim 1, characterized in that: The clamping box includes a supporting bottom plate, side supporting plates, and a supporting top plate, with the clamping hole located in the center of the supporting top plate.

3. The machining fixture for an upper bracket plate according to claim 2, characterized in that: The top support plate is equipped with an adjusting component to adjust the clamping height of the upper support plate.

4. The machining fixture for an upper bracket plate according to claim 3, characterized in that: The support base plate is equipped with a fixing component for connection with the machine tool.

5. The machining fixture for an upper bracket plate according to claim 4, characterized in that: The positioning baffle is equipped with a lateral clamping element.

6. The machining fixture for an upper bracket plate according to claim 5, characterized in that: The locking plate is provided with a longitudinal clamping member, which is also connected to the support top plate. The locking plate and the support top plate cooperate to achieve longitudinal clamping of the upper support plate.

7. The machining fixture for an upper bracket plate according to claim 6, characterized in that: Two locking plates are arranged opposite each other on the support top plate. The locking plates are L-shaped, with the vertical part of the locking plate movably inserted into the support top plate and the horizontal part of the locking plate arranged parallel to the support top plate.

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