CN217966364U - Mechanical pressure maintaining device of steel ball grinding machine - Google Patents

Abstract

The utility model relates to a mechanical pressurizer of steel ball grinding machine, through the structure to hydraulic system optimize the spring pressurizer who improves and dispose and hydro-cylinder assembly cooperation work, the oil pump, the hydro-cylinder system provides the hydraulic energy storage for spring pressurizer, then be whole pull rod by the spring, the fore-bed body, alloy steel plate system provides mechanical potential energy, thereby make the oil pump need not to keep work all the time, just can make grinding machine entire system keep great invariable output pressure, effectively guarantee the axial relative position between fixed alloy steel plate subassembly and the rotation emery wheel subassembly, the equipment fault rate has been reduced by a wide margin, reduce the maintenance number of times, the equipment shut down number of times reduces, the production efficiency is greatly improved, further steel ball quality also improves to some extent.

Description

Mechanical pressure maintaining device of steel ball grinding machine

Technical Field

The utility model relates to the field of machining, concretely relates to mechanical pressurizer of steel ball grinding machine.

Background

In the machining process of mechanical parts, grinding is an important machining step means for ensuring the machining precision of the parts, a grinding machine is a machine tool for grinding the surface of a workpiece by using a grinding tool, the application of the grinding machine is very wide, the working principle of a steel ball grinding machine is that a steel ball is ground in an annular ball path between a rotating grinding wheel and a fixed alloy steel plate by a circulation method, the fixed alloy steel plate of the grinding machine is connected with a piston of an oil cylinder through a front bed body and a pull rod, and the relative position between the fixed alloy steel plate and the rotating grinding wheel is kept through the back and forth movement of the piston in the oil cylinder; as shown in fig. 1, in the conventional steel ball grinding machine 3M4630, it is generally necessary that an oil pump is always in an operating state when machining is performed, and since the pressure oil generated by the oil pump pressurizes the entire grinding machine system through an oil cylinder, the oil cylinder must always have a large output pressure. However, since the oil pump is always in a working state, energy consumption is increased, and meanwhile, in the process of grinding steel balls by the steel ball grinder, the alloy steel plate and the grinding wheel are continuously worn and consumed, the diameter of the steel balls is also continuously ground to be small, in order to continuously maintain a certain pressure on the steel balls in the grinding process, the oil pump and the oil cylinder are required to continuously work and are in a high-pressure state, hydraulic oil is also required to continuously run at high temperature, so that sealing rings of the oil pump and the oil cylinder are extremely easy to damage, generally, the oil pump needs to be replaced once every three months, oil seals of the oil cylinder need to be replaced once in half a year, two maintenance workers need to complete replacement once for the oil pump or the oil cylinder, and serious influence is caused on production.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect and not enough, provide a steel ball grinding machine's mechanical pressurizer, increased one set of mechanical pressurizer promptly on former equipment and replaced oil pump piston pressurize system to solve the very easily damaged problem that lathe oil pump, piston long-term work brought, thereby improved production efficiency, reduced lathe fault rate and cost of maintenance.

In order to achieve the above purpose, the utility model adopts the following technical scheme.

A mechanical pressurizer of a steel ball grinding machine: the lathe comprises a lathe base, wherein a front lathe body and a rear lathe body are arranged on the lathe base, the front lathe body is movably connected with the lathe base, and the rear lathe body is fixedly arranged with the base; alloy steel sheet is installed to preceding bed body front end, it is used for placing the steel ball to set up the ring channel on the alloy steel sheet, the internal portion nestification of back bed has rolling bearing, back bed body rear end position is connected with the sand tyre, the sand tyre is used for fixed grinding wheel, the back bed body is linked together fixedly through the lathe lid with the oil cylinder body, install the piston in the oil cylinder body, the oil cylinder body front end is provided with the thread bush, install spring pressurizer between thread bush and the round nut, spring pressurizer comprises increased pressure board and spring, and the pull rod runs through to set up in increased pressure board, hydro-cylinder, the back bed body and in the preceding bed body, the pull rod carries out fixed positioning through the round nut.

Furthermore, the front bed body is movably connected with the machine tool base through a slide rail.

Further, the spring pressure maintaining device is composed of a front pressing plate and a rear pressing plate, and a spring is installed between the front pressing plate and the rear pressing plate.

Furthermore, six pressure springs are arranged between the front pressure plate and the rear pressure plate.

Further, the thread bush is a locking thread bush.

The utility model has the advantages that: through optimizing and improving the structure of a hydraulic system and configuring a spring pressure maintaining device which is matched with an oil cylinder assembly to work, the oil pump and the oil cylinder system provide hydraulic energy storage for the spring pressure maintaining device, and then the spring provides mechanical potential energy for the whole pull rod, the front bed body and the alloy steel plate system, so that the oil pump does not need to keep working all the time, the whole system of the grinding machine can keep larger constant output pressure, the axial relative position between the fixed alloy steel plate component and the rotating grinding wheel component is effectively ensured, the equipment failure rate is greatly reduced, the maintenance frequency is reduced, the equipment halt frequency is reduced, the production efficiency is greatly improved, and further the quality of the steel ball is also improved.

Drawings

FIG. 1 is a schematic structural diagram of a 3M4650 steel ball grinder before modification;

FIG. 2 is a schematic structural diagram of a modified pressure maintaining device with a spring;

FIG. 3 is a side and top view of the platen;

FIG. 4 is a schematic view of a spring structure;

fig. 5 is a view of a trapezoidal thread pair.

The machine tool comprises a machine tool base-1, a front bed body-2, an alloy steel plate-3, a steel ball-4, a grinding wheel-5, a grinding wheel tire-6, a thrust ball bearing-7, a deep groove ball bearing-8, a rear bed body-9, a deep groove ball bearing-10, a machine tool cover-11, an oil cylinder body-12, a piston-13, a threaded sleeve-14, a front pressure plate-15, a spring-16, a rear pressure plate-17, a round nut-18 and a pull rod-19.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, wherein it is to be understood that the directional terms, such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., generally refer to the orientation or positional relationship shown in the drawings, and are used for convenience in describing the present application and for simplicity in description, and do not imply that the referenced device or element must have a particular orientation or be constructed and operated in a particular orientation.

The utility model provides a mechanical pressurizer of steel ball grinding machine, includes machine tool base 1, fixed mounting has back bed body 9 on the machine tool base 1, preceding bed body 2 passes through slide rail swing joint with machine tool base 1, alloy steel sheet 3 is installed to preceding bed body 2 front end, it has the ring channel to be used for placing steel ball 4 to open on the alloy steel sheet 3, the inside nested rolling bearing that has of back bed body 9, back bed body 9 front end position is connected with tire 6, tire 6 is used for fixed grinding wheel 5, back bed body 9 links to each other through machine tool lid 11 with the hydro-cylinder body 12, install piston 13 in the hydro- cylinder body 12, 12 front ends of hydro-cylinder body are provided with thread bush 14, be provided with preceding increased pressure board 15, back increased pressure board 17 between thread bush 14 and round nut 18, install spring 16 between preceding increased pressure board 15 and the back increased pressure board 17, pull rod 19 runs through and sets up in increased pressure board, hydro-cylinder, back bed body 9 middle part and the preceding bed body 2, pull rod 19 carries out fixed positioning through round nut 18.

Specifically, a front bed body 2 and a rear bed body 9 are arranged on a machine tool base 1, the front bed body 2 is movably connected with the machine tool base 1, and the rear bed body 9 is fixedly installed with the machine tool base 1; alloy steel sheet 3 is installed to preceding bed body 2 front end, it is used for placing steel ball 4 to have seted up the ring channel on the alloy steel sheet 3, the inside nested rolling bearing that has of back bed body 9 is thrust ball bearing 7, deep groove ball bearing 10 respectively, back bed body 9 rear end position is connected with sand tyre 6, sand tyre 6 is used for fixed emery wheel 5, back bed body 9 is linked together fixedly through machine tool cover 11 with the oil cylinder body 12, install the piston in the oil cylinder body 12, oil cylinder body 12 front end is provided with thread bush 14, install spring pressurizer between thread bush 14 and the round nut 18, spring pressurizer comprises increased plate and spring 16, and pull rod 19 runs through and sets up in increased plate, hydro-cylinder, back bed body 9 middle part and preceding bed body 2, pull rod 19 carries out fixed positioning through round nut 18.

Preferably, the front bed body 2 is movably connected with the machine tool base 1 through a slide rail.

Preferably, the spring pressure maintaining device is composed of a front pressure plate 15 and a rear pressure plate 17, and a spring 16 is installed between the front pressure plate 15 and the rear pressure plate 17.

Preferably, six compression springs are arranged between the front pressure plate 15 and the rear pressure plate 17.

Preferably, the threaded sleeve 14 is a locking threaded sleeve.

The utility model discloses the theory of operation:

the end of a pull rod 19 is clamped in the front bed body 2, the rear bed body 9 is fixedly installed with the machine tool base 1, the front bed body 2 can move back and forth relative to the machine tool base 1, the rear bed body 9, the machine tool cover 11 and the oil cylinder body 12 are connected into a whole, the pull rod 19 is connected to the rear bed body 9, the oil cylinder body 12 and the interior of the pressure plate in a penetrating mode, a round adjusting nut 18 is used for pre-tightening the mechanical pressure maintaining device, an oil pump is started to drive the pull rod 19 to move left after compressing a spring through an oil cylinder piston, the pull rod 19 drives the front bed body 2 to move left, so that steel balls 4 in an alloy steel plate are in contact with grinding wheels 5 on the rear bed body 9 and are pressurized, the grinding wheels 5 are in full contact with the steel balls 4 to be polished, and the spring pressure maintaining device is further composed of two pressure plates, six pressure springs and a pair of locking thread sleeves, wherein the shape and the size of the pressure plates are as shown in figure 3.

Further, the spring gauge is shown in FIG. 4 and the acme thread pair gauge is shown in FIG. 5. Firstly welding an internal thread sleeve (external thread) in a trapezoidal thread pair on an oil cylinder, then screwing the external thread sleeve (internal thread) into the external thread welded on the oil cylinder body, then loading six compression springs into front and rear press plate 6-phi 64 counter bores, additionally installing a press plate spring assembly on an original pull rod of a machine tool, and rotating a handle on a round nut 18 to pre-tighten a spring pressure maintaining device in a pressurizing manner.

In actual work, a grinding wheel is started, a material tray is started, an oil pump is started, pressure oil pushes an oil cylinder piston to move leftwards, a pressing plate is pushed to compress a spring, a pull rod is pulled through a pressing plate and a round nut to drive a machine tool front bed body to move on a guide rail of a machine tool base, an alloy steel plate with a plurality of annular grooves and mounted on the front bed body compresses a steel ball, an overflow valve is started when pressure reaches set pressure, working pressure is stably maintained at 2.45-2.94MPa, then a locking spring is sleeved on an external thread in a thread pair, the oil pump and the piston are closed, a hydraulic system stops working, and the working pressure of the system is completely provided by six compression springs.

In the grinding process, because the alloy steel plate and the grinding wheel are continuously consumed, the size of the steel ball is reduced, the pressure of the system is continuously reduced in a small way, through tests, the grinding of a machine tool works for 4 hours, the total axial displacement of the whole system is smaller than 2mm due to consumption and reduction of the diameter of the steel ball, the pressure is reduced to be smaller than 0.5MPa, the working pressure of the system can be completely kept in the pressure range required by grinding within 4 hours, and the gradual reduction of the pressure is favorable for improving the spherical deviation and the surface roughness of the steel ball. And after the machine tool grinds and processes for four hours, starting the oil pump again to pressurize, and repeating the actions to recover the system pressure to be within the working pressure range.

Although exemplary embodiments of the present invention have been described herein, the present invention is not limited to these embodiments, but includes any and all embodiments modified, omitted, combined, for example, between various embodiments, adapted changes and/or substitutions as would be recognized by those skilled in the art from the foregoing detailed description. The limitations in the claims are to be interpreted broadly based the language employed in the claims and not limited to examples described in the foregoing detailed description or during the prosecution of the application, which examples are to be construed as non-exclusive. Any steps recited in any method or process claims may be executed in any order and are not limited to the order presented in the claims. Accordingly, the scope of the invention should be determined only by the appended claims and their legal equivalents, rather than by the descriptions and examples given above.

Claims (5)

1. The utility model provides a mechanical pressurizer of steel ball grinding machine which characterized in that: the lathe comprises a lathe base, wherein a front lathe body and a rear lathe body are arranged on the lathe base, the front lathe body is movably connected with the lathe base, and the rear lathe body is fixedly arranged with the base; alloy steel sheet is installed to preceding bed body front end, it is used for placing the steel ball to set up the ring channel on the alloy steel sheet, the internal portion nestification of back bed has rolling bearing, back bed body rear end position is connected with the sand tyre, the sand tyre is used for fixed grinding wheel, the back bed body is linked together fixedly through the lathe lid with the oil cylinder body, install the piston in the oil cylinder body, the oil cylinder body front end is provided with the thread bush, install spring pressurizer between thread bush and the round nut, spring pressurizer comprises increased pressure board and spring, and the pull rod runs through to set up in increased pressure board, hydro-cylinder, the back bed body and in the preceding bed body, the pull rod carries out fixed positioning through the round nut.

2. The mechanical pressure maintaining device of the steel ball grinding machine as claimed in claim 1, wherein the front bed body is movably connected with the base through a slide rail.

3. The mechanical pressure maintaining device of a steel ball grinding machine as claimed in claim 1, wherein the spring pressure maintaining device is composed of a front pressure plate and a rear pressure plate, and a spring is installed between the front pressure plate and the rear pressure plate.

4. The mechanical pressure maintaining device of a steel ball grinding machine as claimed in claim 3, wherein six compression springs are installed between the front pressing plate and the rear pressing plate.

5. The mechanical pressure maintaining device of the steel ball grinding machine as claimed in claim 1, wherein the threaded sleeve is a locking threaded sleeve.

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