Train wheel milling positioning tool

Abstract

The utility model discloses a train wheel milling positioning tool which comprises a mother board, a first clamping mechanism and a second clamping mechanism, the first clamping mechanism and the second clamping mechanism are arranged on the mother board and used for exerting pressure on a wheel, and the first clamping mechanism comprises a first pressing actuator and a first pressing plate which is arranged on the first pressing actuator and used for making contact with the wheel. The first clamping mechanism comprises a first pressing actuator and a first pressing plate, the second clamping mechanism comprises a second pressing actuator and a second pressing plate, the second pressing plate is arranged on the second pressing actuator and used for making contact with a wheel, the number of the first clamping mechanism and the number of the second clamping mechanism are both at least one, the first pressing actuator and the second pressing actuator are hydraulic cylinders, and the position of the first pressing actuator is adjustable. The train wheel milling positioning tool has wide applicability, production interruption and downtime caused by tool replacement can be reduced, production efficiency and equipment utilization rate can be improved, and positioning stability can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to train wheel milling processing technical field, concretely, the utility model relates to a train wheel milling positioning tool. BACKGROUND

[0002] With the rapid development of railway transportation, the quality and performance of train wheels, as key components of train operation, have important influence on the safety, stability and operation efficiency of trains. The wheel brake mode has gradually entered the disc brake mode from the traditional friction brake mode. The disc brake installs the brake disc on the wheel or axle, and generates braking force through the clamping of the brake caliper on the brake disc. This mode has the advantages of large braking force, good heat dissipation performance, reduced heat recession phenomenon, etc., significantly improving the braking performance and safety of trains. The disc brake needs to mill a pin hole on the wheel spoke plate for brake disc installation, and the spoke plate pin hole needs to be milled on a machining center or a four-axis machine tool.

[0003] Therefore, with the popularization of disc brake, large excess milling needs to be performed on the wheel spoke plate. The traditional manual tooling applies different locking forces, providing different clamping forces, and has poor positioning stability. When the milling excess is large, the workpiece is prone to move, and in severe cases, the workpiece may pop up during processing, causing tool breakage or even personal injury accidents.

[0004] A wind turbine generator set yaw large disc milling tool is disclosed in Chinese patent No. 202321396647.1. The utility model provides a kind of wind turbine generator set yaw large disc milling tool, and the working disc is connected in the upper end of base by plug-in connection, and T-shaped slot is opened on the outer wall of working disc, and long hole is opened in the bottom end of T-shaped slot;The yaw large disc is placed on the upper end of working disc;The centering seat is connected in the inner wall of T-shaped slot by plug-in connection as sliding device, and support is arranged in the upper end of centering seat, and centering seat and support are integrated structure;The pressure rod is connected in the inner wall of support by plug-in connection, and the pressure plate is connected in one end of pressure rod by plug-in connection;The cylinder is bolted in the upper end of centering seat, and one end of centering seat is connected in the other end of pressure rod by plug-in connection;By improving a kind of wind turbine generator set yaw large disc milling tool, it has the advantages of reasonable structure design, automatic centering, quick fastening and no damage to workpiece, thereby effectively solving the problems and deficiencies in existing devices.

[0005] It is desirable to provide an improved train wheel milling positioning tool, particularly regarding how to improve positioning stability and reduce Z-direction height space, and improve adaptability. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving one of the technical problems in the prior art at least. For this purpose, the utility model provides a train wheel milling positioning tool, which aims at improving positioning stability.

[0007] In order to realize the above-mentioned purpose, the utility model takes the technical scheme that a train wheel milling positioning tool, including the female board and being used for exerting the pressure to the wheel first clamping mechanism and second clamping mechanism that are arranged on the female board, the first clamping mechanism includes the first pressure closer and the first pressure plate that is arranged on the first pressure closer and is used for being contacted with the wheel, the second clamping mechanism includes the second pressure closer and the second pressure plate that is arranged on the second pressure closer and is used for being contacted with the wheel, the first clamping mechanism and the second clamping mechanism are at least arranged one, the first pressure closer and the second pressure closer are hydraulic cylinders, and the position of the first pressure closer is adjustable.

[0008] The first clamping mechanism further includes the first sliding block plate and the first positioning block that is arranged on the first sliding block plate, the first pressure closer is arranged on the first positioning block, and the position of the first positioning block on the first sliding block plate is adjustable.

[0009] The first sliding block plate is provided with a sliding groove, and the first positioning block is provided with a sliding block embedded in the sliding groove.

[0010] The sliding groove is provided with a plurality of sliding grooves.

[0011] The second clamping mechanism further includes the second positioning block arranged on the female board, and the second pressure closer is arranged on the second positioning block.

[0012] The first clamping mechanism is provided with three, and the second clamping mechanism is provided with one.

[0013] The female board is provided with a hydraulic jacking cylinder for exerting radial pressure on the wheel.

[0014] The train wheel milling positioning tool of the utility model has wide applicability, can reduce production interruption and downtime caused by tool replacement, improve production efficiency and equipment utilization, and improve positioning stability. BRIEF DESCRIPTION OF DRAWINGS

[0015] The present specification includes the following drawings, and the shown contents are as follows:

[0016] Fig. 1 It is the structure schematic diagram of the train wheel milling positioning tool of the utility model;

[0017] Fig. 2 It is the plan view of the train wheel milling positioning tool of the utility model;

[0018] Fig. 3The utility model is a use state schematic drawing of train wheel milling positioning tooling.

[0019] In the figure, mark: 1, female board;2, first sliding block plate;3, first pressure executor;4, first positioning block;5, first pressing plate;6, second pressure executor;7, second positioning block;8, second pressing plate;9, hydraulic top cylinder;10, wheel. DETAILED DESCRIPTION

[0020] The specific embodiments of the utility model are further explained in detail by the description of the embodiments with reference to the drawings, the purpose is to help the technical personnel in the field to have more complete, accurate and deep understanding to the conception, technical scheme of the utility model, and help to implement.

[0021] It needs to be explained that in the following embodiment, the "first" and "second" do not represent the absolute division relationship of structure and / or function, and do not represent the execution order, but only for the convenience of description.

[0022] As Figs. 1-3 The utility model provides a kind of train wheel milling positioning tooling, including female board 1 and be used for the first clamping mechanism and second clamping mechanism for exerting pressure to wheel and be set on female board 1, first clamping mechanism includes first pressure executor 3 and is set on first pressure executor 3 and is used to contact with wheel first pressing plate 5, second clamping mechanism includes second pressure executor 6 and is set on second pressure executor 6 and is used to contact with wheel second pressing plate 8, first clamping mechanism and second clamping mechanism are at least set one, first pressure executor 3 and second pressure executor 6 are hydraulic cylinder, the position of first pressure executor 3 can be adjusted.

[0023] Specifically, as Figs. 1-3As shown, the first clamping mechanism further comprises a first slider plate 2 and a first positioning block 4 arranged on the first slider plate 2, and the first pressing actuator 3 is arranged on the first positioning block 4, and the position of the first positioning block 4 on the first slider plate 2 is adjustable. The first slider plate 2 is provided with a sliding groove, and the first positioning block 4 is provided with a sliding block embedded in the sliding groove, and the sliding groove is provided with a plurality of sliding grooves, and the sliding groove is horizontally arranged, and the bottom of the first positioning block 4 is provided with a plurality of sliding blocks, and each sliding groove is provided with a sliding block matched therewith, and the cooperation of the sliding blocks and the sliding blocks plays a guiding role in the movement of the first positioning block 4. The first positioning block 4 drives the first pressing actuator 3 to move horizontally synchronously, thereby adjusting the distance between the first pressing actuator 3 and the wheel, that is, adjusting the pressing position of the first pressing plate 5. The first pressing actuator 3 is vertically arranged, and the first pressing plate 5 is horizontally arranged, one end of the first pressing plate 5 is fixedly connected with the upper end of the piston rod of the first pressing actuator 3, and the other end of the first pressing plate 5 is used to contact the top surface of the wheel. The wheel is placed in a horizontal state, the axis of the wheel is a vertical line, and the first positioning block 4 is used to provide support for the wheel at the same time, and the bottom surface of the wheel is in contact with all the first positioning blocks 4. The first positioning block 4 is provided with a locking bolt, the locking bolt is in threaded connection with the first positioning block 4, the locking bolt is matched with the sliding block plate, and the locking bolt is used to fix the first positioning block 4 on the first sliding block plate 2 after position adjustment.

[0024] As shown in Figs. 1-3 , the second clamping mechanism further comprises a second positioning block 7 arranged on the mother plate 1, and the second pressing actuator 6 is arranged on the second positioning block 7. The second positioning block 7 is fixedly arranged, the second pressing actuator 6 is vertically arranged, the second pressing plate 8 is horizontally arranged, one end of the second pressing plate 8 is fixedly connected with the upper end of the piston rod of the second pressing actuator 6, and the other end of the second pressing plate 8 is used to contact the top surface of the wheel. The second positioning block 7 is used to provide support for the wheel at the same time, and the bottom surface of the wheel is in contact with the second positioning block 7.

[0025] As shown in Figs. 1-3 , in this embodiment, three first clamping mechanisms and one second clamping mechanism are arranged, and the three first clamping mechanisms and the one second clamping mechanism are distributed in four points to clamp the wheel together. The milling positioning tool adopts four-point positioning, hydraulic clamping, and the clamping process is stable, and different diameter wheels can be machined, and only the positioning block needs to be translated to completely position, and the tool has high efficiency and strong adaptability. In this embodiment, hydraulic positioning is adopted, compared with the pneumatic method in the prior art, the positioning is more stable, the height requirement in the Z direction (vertical direction) is lower, and the adaptability is stronger. For products of different diameters, only the three first positioning blocks 4 need to be moved, and different diameter wheels can be milled. The first pressing actuator 3 adopts an upper pressing type hydraulic cylinder, the clamping is reliable, and the wheel with a thickness of 110-180mm can be pressed tightly, and the adaptability is strong.

[0026] AsFigs. 1-3 As shown in the figure, the train wheel milling positioning tool further comprises a hydraulic jack 9 for applying radial pressure to the wheel, and the hydraulic jack 9 is located between the two adjacent first clamping mechanisms. By installing a hydraulic jack 9 on one side of the tool, for workpieces with a large milling amount, the hydraulic jack 9 is elongated, the hydraulic jack 9 side presses the wheel, the head of the hydraulic jack 9 is in contact with the outer cylindrical surface of the wheel, and the movement of the wheel in the horizontal direction is limited; for workpieces with a small milling amount, the hydraulic jack 9 does not work and does not side press the workpiece.

[0027] As shown in the figure, Figs. 1-3 As shown in the figure, the second sliding block plate and the L-shaped anti-collision pin are arranged on the mother plate 1, the second sliding block plate is provided with a sliding groove, the bottom of the hydraulic jack 9 is provided with a sliding block embedded in the sliding groove, the sliding groove is provided with a plurality of sliding grooves, the sliding groove is horizontally arranged, the bottom of the hydraulic jack 9 is provided with a plurality of sliding blocks, and each sliding groove is provided with a sliding block matched therewith. The cooperation of the sliding blocks and the sliding blocks plays a guiding role in the movement of the hydraulic jack 9, the hydraulic jack can move in the horizontal direction, and the position adjustment of the hydraulic jack 9 is realized. The hydraulic jack 9 is installed on the second sliding block plate with a T-shaped sliding groove, and the installation position is located on one side of the wheel. The other side of the wheel has an L-shaped anti-collision pin, and the wheel is located between the hydraulic jack 9 and the L-shaped anti-collision pin. The L-shaped anti-collision pin is used to prevent the workpiece from colliding with the oil cylinder. The hydraulic jack 9 is provided with a locking bolt, the locking bolt is in threaded connection with the hydraulic jack 9, the locking bolt is matched with the sliding block plate, and the locking bolt is used to fix the hydraulic jack 9 on the second sliding block plate after position adjustment.

[0028] In use, the mother plate 1 is positioned on the workbench of the machine tool, the first sliding block plate 2 is fixed on the mother plate 1, and the position is as shown in the figure, Fig. 1 As shown in the figure, three first positioning blocks 4 are installed on the first sliding block plate 2 and can move on the first sliding block plate 2 with a T-shaped groove. Different workpiece diameters are selected for positioning. There is also a fixed second positioning block 7, which is directly bolted to the mother plate 1. Four downward hydraulic oil cylinders are fixed on the upper end of the positioning block, and the clamping position is the wheel rim surface. The position of the first pressing plate 5 and the second pressing plate 8 in contact with the wheel is provided with a brass pad to prevent damage from knocking.

[0029] The train wheel milling positioning tool of the embodiment adopts a downward positioning mode, the hole system processing is consistent with the cutting force, the workpiece displacement is reduced to the maximum extent, and the hydraulic system is used to control the clamping force, so that the problem of unstable clamping force can be solved. The tool is suitable for batch machining of multiple varieties of wheel milling, can clamp wheels with a diameter of 600mm-1250mm and a thickness of 110mm-140mm, and the entire positioning block moves like a sliding block on a T-shaped guide rail, so that the problem of low efficiency in switching varieties can be solved.

[0030] Embodiment

[0031] When the wheel web hole is machined by using the train wheel milling positioning tool, the wheel diameter is determined, then the locking bolts on the three first positioning blocks 4 are loosened, each first positioning block 4 has three locking bolts on the upper surface, the moving distance of the first positioning block 4 on the first sliding plate is determined, the distance of the two first positioning blocks 4 in the cross direction is measured by using a tape measure, the distance between the two first positioning blocks 4 is ensured to be greater than the wheel diameter, the distance in the opposite direction is ensured to be greater than 0.7*wheel diameter. Then the locking bolts on the first positioning block 4 are fastened, the tool is completed, then the dial indicator seat is installed on the machine tool, the dial indicator head is downward, the Z-direction height of the tool pad iron is checked, if the four-point height exceeds 0.03mm, copper sheet or milling cutter can be used to mill the surface of the pad iron, otherwise, the normal feeding is carried out, and attention should be paid to the wheel close to the L-shaped anti-collision pin during feeding. Then the first clamping mechanism and the second clamping mechanism clamp the wheel, then the wheel is milled.

[0032] The utility model has been described above in conjunction with the drawings. Obviously, the specific implementation of the utility model is not limited by the above method. As long as various non-essential improvements are made by using the method concept and technical scheme of the utility model; or the above concept and technical scheme of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A milling and positioning fixture for train wheels, characterized in that, The device includes a mother plate and a first clamping mechanism and a second clamping mechanism disposed on the mother plate for applying pressure to the wheel. The first clamping mechanism includes a first pressing actuator and a first pressure plate disposed on the first pressing actuator for contacting the wheel. The second clamping mechanism includes a second pressing actuator and a second pressure plate disposed on the second pressing actuator for contacting the wheel. At least one of the first clamping mechanism and the second clamping mechanism is provided. The first pressing actuator and the second pressing actuator are hydraulic cylinders. The position of the first pressing actuator is adjustable.

2. The milling and positioning fixture for train wheels according to claim 1, characterized in that, The first clamping mechanism further includes a first slider plate and a first positioning block disposed on the first slider plate. The first clamping actuator is disposed on the first positioning block, and the position of the first positioning block on the first slider plate is adjustable.

3. The milling and positioning fixture for train wheels according to claim 2, characterized in that, The first slider plate is provided with a slide groove, and the first positioning block is provided with a slider embedded in the slide groove.

4. The milling and positioning fixture for train wheels according to claim 3, characterized in that, Multiple chutes are provided.

5. The milling and positioning fixture for train wheels according to any one of claims 1 to 4, characterized in that, The second clamping mechanism further includes a second positioning block disposed on the mother plate, and the second clamping actuator is disposed on the second positioning block.

6. The milling and positioning fixture for train wheels according to any one of claims 1 to 4, characterized in that, There are three first clamping mechanisms and one second clamping mechanism.

7. The milling and positioning fixture for train wheels according to any one of claims 1 to 4, characterized in that, The mother plate is equipped with a hydraulic jack cylinder for applying radial pressure to the wheel.

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