Static pressure spindle for cylindrical grinding machine

Abstract

The utility model discloses a static pressure main shaft for a cylindrical grinding machine, which comprises a headstock box body and a hydraulic mechanism, the headstock box body and a trepanning box cover are external protective shells of the static pressure main shaft, an internal main shaft part is protected from external damage, internal disassembly and replacement are facilitated, and later maintenance is facilitated; hydraulic oil finally flows into the two sets of oil way steering wheels in the split bearing seat through oil way openings, the first oil way steering wheel and the second oil way steering wheel are provided with arc-shaped notches in the opposite directions, inflow of the hydraulic oil is facilitated, and the hydraulic device changes the rotating angle of the two sets of oil way steering wheels by changing the content of the hydraulic oil in the open hole box cover. Reciprocating rotation control over the main shaft is completed, the energy loss rate and the energy supply cost are reduced through hydraulic control, economic benefits are improved, a damping gasket is used for reducing vibration in the hydraulic process, and a ring sleeve and a fixing hole ring are used for positioning and installation of other accessories of an external lathe.

Description

Technical Field

[0001] The utility model relates to the technical field of external cylindrical grinders, in particular to a static pressure spindle used for external cylindrical grinders. Background Art

[0002] Workpiece grinding is usually carried out on a grinding machine, which includes internal cylindrical grinders, external cylindrical grinders, surface grinders, end face grinders and some other special grinders. Workers can select the corresponding grinder according to the different parts of the workpiece to be ground. At present, in the outer diameter grinding and polishing process of bars or pipes, the process of coarse grinding with external cylindrical grinders and fine polishing with polishing wheels is usually adopted. The smooth progress of rough grinding with external cylindrical grinders and fine polishing with polishing wheels requires a spindle.

[0003] According to the search announcement number CN219005494U, a static pressure spindle for an external cylindrical grinder includes a spindle and a sleeve, the sleeve is arranged on the outside of the spindle, and sealing covers are arranged at both ends of the sleeve through a clamping device. The two ends of the spindle extend to the outside of the sealing cover, and the spindle is rotatably connected to the sealing cover. An annular oil groove is provided on the surface of the inner side of the sleeve opposite to the spindle, and a semicircular limiting groove is provided on the surface of the part extending from the left side of the spindle. Threaded holes are evenly provided inside the limiting groove. A gear is provided on the left side of the spindle, and a protrusion matching the limiting groove is provided on the inner surface of the gear. The protrusion is slidably connected to the limiting groove, and a mounting hole is provided on the surface of the gear. The utility model proposes a static pressure spindle with high transmission efficiency, easy to clean, disassemble and replace, and improved work efficiency.

[0004] However, the following problems exist when implementing the above technical solution: the above technical solution only uses a closed shell design, which has high production costs, a large number of parts, is inconvenient for internal disassembly and replacement, and is not conducive to later maintenance. There are many related mechanical components, a high wear rate, a large energy loss rate, high maintenance costs, and no good economic benefits. Utility Model Content

[0005] The purpose of the present utility model is to provide a hydrostatic spindle for a cylindrical grinder to solve the problems in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a static pressure spindle for an external cylindrical grinder, comprising a headstock and a hydraulic mechanism, the top of the headstock is provided with an open box cover, the front side of the bottom of the open box cover is provided with a front bearing, the front side of the front bearing is provided with a top tailstock, a hydraulic mechanism is provided on the top of the headstock, a main shaft is provided in the top center of the headstock, the front side of the main shaft is provided with a first oil circuit steering wheel, the inner side of the main shaft is provided with a second oil circuit steering wheel, the rear side of the second oil circuit steering wheel is provided with a rear bearing, the outer side of the rear bearing is provided with a tail bearing sleeve, the outer side of the main shaft is provided with a split bearing seat, the outer side of the open box cover is provided with an oil passage, the outer side of the oil passage is provided with a hydraulic interface, the front side of the headstock is provided with a shock-absorbing washer, the front side of the shock-absorbing washer is provided with a ring sleeve, and the front side of the ring sleeve is provided with a fixing hole ring.

[0007] Preferably, the front box body and the perforated box cover are connected by a slot, the front box body and the perforated box cover are matched in size, and eight groups of square openings are provided on both sides of the perforated box cover.

[0008] Preferably, the perforated box cover and the front bearing are rotatably connected, the perforated box cover and the front bearing width dimensions match each other, the front bearing and the top tailstock are connected by a slot, and the front bearing and the top tailstock dimensions match each other.

[0009] Preferably, the main body core shaft and the first oil circuit steering wheel are fixedly connected, the main body core shaft and the second oil circuit steering wheel are fixedly connected, the first oil circuit steering wheel and the second oil circuit steering wheel are arranged opposite to each other, and the main body core shaft, the first oil circuit steering wheel and the second oil circuit steering wheel have the same diameter size.

[0010] Preferably, the second oil circuit steering wheel is fixedly connected to the rear bearing, the rear bearing is rotationally connected to the tail bearing sleeve, and the rear bearing is tightly fitted to the tail bearing sleeve.

[0011] Preferably, the split bearing seat and the front box body are connected by a card slot, the split bearing seat is provided with four groups, the surface of the split bearing seat is provided with a rectangular slot, the split bearing seat and the main body core shaft are rotatably connected, the open box cover and the oil port are connected by a card slot, and the oil port and the hydraulic interface are connected by a card slot.

[0012] Preferably, the front bearing and the shock-absorbing washer are in a sleeve connection, the front bearing and the ring sleeve are in a sleeve connection, and the front bearing and the fixing hole ring are in a sleeve connection, and the fixing hole ring is provided with eight groups of round holes.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The front box body and the perforated box cover are the external protective shells of the static pressure spindle, which protect the internal spindle part from external damage. At the same time, it is convenient for internal disassembly and replacement, which is convenient for later maintenance. The first oil circuit steering wheel and the second oil circuit steering wheel are provided with arc-shaped notches in opposite directions to facilitate the extrusion of hydraulic oil and complete the rotation of the spindle in two different directions. The external hydraulic device is connected to the hydraulic interface, and the hydraulic oil flows through the oil port and finally flows into the two sets of oil circuit steering wheels in the split bearing seat. The hydraulic device changes the rotation angle of the two sets of oil circuit steering wheels by changing the hydraulic oil content in the perforated box cover to complete the reciprocating rotation control of the spindle. Hydraulic control reduces energy consumption rate and energy supply cost, and improves economic benefits. Shock-absorbing washers are used to reduce vibration during the hydraulic process, and ring sleeves and fixed hole rings are used for positioning and installation of other external lathe accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal appearance structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the front cross-sectional appearance structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the side sectional appearance structure of the utility model.

[0019] Numbers in the figure: 1. Front box body; 2. Opening box cover; 3. Front bearing; 4. Top tailstock; 5. Hydraulic mechanism; 501. Main body core shaft; 502. First oil circuit steering wheel; 503. Second oil circuit steering wheel; 504. Rear bearing; 505. Tail bearing sleeve; 506. Split bearing seat; 507. Oil passage; 508. Hydraulic interface; 6. Shock-absorbing washer; 7. Ring sleeve; 8. Fixing hole ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-4The utility model provides a technical solution: a static pressure spindle for an external cylindrical grinder, comprising a headstock 1 and a hydraulic mechanism 5, a headstock 1 having an opening box cover 2 arranged on the top, a front bearing 3 arranged on the front side of the bottom of the opening box cover 2, a top tailstock 4 arranged on the front side of the front bearing 3, a hydraulic mechanism 5 arranged on the top of the headstock 1, a main core shaft 501 arranged at the center of the top of the headstock 1, a first oil circuit steering wheel 502 arranged on the front side of the main core shaft 501, and a first oil circuit steering wheel 502 arranged on the inner side of the main core shaft 501. A second oil circuit steering wheel 503 is provided, a rear bearing 504 is provided on the rear side of the second oil circuit steering wheel 503, a tail bearing sleeve 505 is provided on the outside of the rear bearing 504, a split bearing seat 506 is provided on the outside of the main core shaft 501, an oil circuit port 507 is provided on the outside of the open box cover 2, a hydraulic interface 508 is provided on the outside of the oil circuit port 507, a shock-absorbing washer 6 is provided on the front side of the front box body 1, a ring sleeve 7 is provided on the front side of the shock-absorbing washer 6, and a fixing hole ring 8 is provided on the front side of the ring sleeve 7.

[0022] Furthermore, the front box body 1 and the perforated box cover 2 are connected by a card slot, the front box body 1 and the perforated box cover 2 are matched in size, eight groups of square openings are set on both sides of the perforated box cover 2, and the front box body 1 and the perforated box cover 2 are the external protective shells of the static pressure spindle, which protect the internal spindle part from external damage, and are convenient for internal disassembly and replacement, which is convenient for later maintenance.

[0023] Furthermore, the perforated box cover 2 and the front bearing 3 are rotatably connected, the width dimensions of the perforated box cover 2 and the front bearing 3 match, the front bearing 3 and the top tailstock 4 are connected by a slot, the dimensions of the front bearing 3 and the top tailstock 4 match, and the front bearing 3 rotates in the perforated box cover 2, driving the top tailstock 4 on the front side to rotate, so as to complete the corresponding lathe processing operation.

[0024] Furthermore, the main core shaft 501 and the first oil circuit steering wheel 502 are fixedly connected, and the main core shaft 501 and the second oil circuit steering wheel 503 are fixedly connected. The first oil circuit steering wheel 502 and the second oil circuit steering wheel 503 are arranged opposite to each other. The main core shaft 501, the first oil circuit steering wheel 502 and the second oil circuit steering wheel 503 have the same diameter size. The first oil circuit steering wheel 502 and the second oil circuit steering wheel 503 are provided with arc-shaped notches in opposite directions to facilitate the extrusion of hydraulic oil and complete the rotation of the main shaft in two different directions.

[0025] Furthermore, the second oil circuit steering wheel 503 and the rear bearing 504 are fixedly connected, and the rear bearing 504 and the tail bearing sleeve 505 are rotationally connected. The rear bearing 504 and the tail bearing sleeve 505 fit tightly together, and the rear bearing 504 passes through the circular hole of the open box cover 2 and rotates inside the tail bearing sleeve 505 on the rear side, ensuring the smoothness and position accuracy of the main shaft during rotation.

[0026] Furthermore, the split bearing seat 506 and the front box body 1 are connected by a slot, and there are four groups of split bearing seats 506. The surface of the split bearing seat 506 is provided with rectangular slots. The split bearing seat 506 and the main core shaft 501 are rotatably connected. The perforated box cover 2 and the oil passage 507 are connected by a slot, and the oil passage 507 and the hydraulic interface 508 are connected by a slot. The external hydraulic device is connected to the hydraulic interface 508, and the hydraulic oil passes through the oil passage 507 and finally flows into the two groups of oil circuit steering wheels in the split bearing seat 506. The hydraulic device changes the rotation angle of the two groups of oil circuit steering wheels by changing the hydraulic oil content in the perforated box cover 2, thereby completing the reciprocating rotation control of the main shaft. The hydraulic control reduces the energy consumption rate and energy supply cost, thereby improving the economic benefits.

[0027] Furthermore, the front bearing 3 and the shock-absorbing washer 6 are sleeved together, the front bearing 3 and the ring sleeve 7 are sleeved together, and the front bearing 3 and the fixed hole ring 8 are sleeved together. The shock-absorbing washer 6 has eight groups of round holes. The shock-absorbing washer 6 is used to reduce vibration during the hydraulic process. The ring sleeve 7 and the fixed hole ring 8 are used for positioning and installation of other external lathe accessories.

[0028] Working principle: First, put the hydrostatic spindle into the external cylindrical grinder and connect it to the external hydraulic device. The external hydraulic device is connected to the hydraulic interface 508. The hydraulic oil flows through the oil port 507 and finally flows into the two sets of oil circuit steering wheels in the split bearing seat 506. The first oil circuit steering wheel 502 and the second oil circuit steering wheel 503 are provided with arc-shaped notches in opposite directions to facilitate the extrusion of the hydraulic oil. The hydraulic device changes the rotation angle of the two sets of oil circuit steering wheels by changing the hydraulic oil content in the perforated box cover 2 to complete the reciprocating rotation control of the spindle. The hydraulic control reduces the energy consumption rate and energy supply cost, and improves the economic benefit. The front bearing 3 rotates in the perforated box cover 2 The movement drives the front tailstock 4 to rotate to complete the corresponding lathe processing operation. The rear bearing 504 passes through the circular hole of the perforated box cover 2 and rotates with the tail bearing sleeve 505 on the rear side to ensure the smoothness and position accuracy of the spindle rotation. The headstock 1 and the perforated box cover 2 are the external protective shells of the hydrostatic spindle, which protect the internal spindle part from external damage. At the same time, it is easy to disassemble and replace the internal part, which is convenient for later maintenance. The shock-absorbing washer 6 is used to reduce vibration during the hydraulic process. The ring sleeve 7 and the fixed hole ring 8 are used for positioning and installation of other external lathe accessories. This completes the use process of a hydrostatic spindle for an external cylindrical grinder.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydrostatic spindle for a cylindrical grinding machine, comprising a headstock (1) and a hydraulic mechanism (5), characterized in that: The top of the locomotive box body (1) is provided with an open box cover (2), the bottom front side of the open box cover (2) is provided with a front bearing (3), the front side of the front bearing (3) is provided with a top tailstock (4), the top of the locomotive box body (1) is provided with a hydraulic mechanism (5), the top center of the locomotive box body (1) is provided with a main body core shaft (501), the front side of the main body core shaft (501) is provided with a first oil circuit steering wheel (502), the inner side of the main body core shaft (501) is provided with a second oil circuit steering wheel (503), the second oil circuit steering wheel (503) is provided with a second oil circuit steering wheel (504), and the second oil circuit steering wheel (505) is provided with a second oil circuit steering wheel (506). 03) is provided with a rear bearing (504) on the rear side, a tail bearing sleeve (505) is provided on the outside of the rear bearing (504), a split bearing seat (506) is provided on the outside of the main core shaft (501), an oil passage (507) is provided on the outside of the perforated box cover (2), a hydraulic interface (508) is provided on the outside of the oil passage (507), a shock-absorbing washer (6) is provided on the front side of the front box body (1), a ring sleeve (7) is provided on the front side of the shock-absorbing washer (6), and a fixing hole ring (8) is provided on the front side of the ring sleeve (7).

2. The hydrostatic spindle for a cylindrical grinding machine according to claim 1, characterized in that: The front box body (1) and the perforated box cover (2) are connected by a slot, the front box body (1) and the perforated box cover (2) are matched in size, and eight groups of square openings are provided on both sides of the perforated box cover (2).

3. The hydrostatic spindle for a cylindrical grinding machine according to claim 1, characterized in that: The perforated box cover (2) and the front bearing (3) are connected in a rotational manner, the width of the perforated box cover (2) and the front bearing (3) are matched, the front bearing (3) and the top tailstock (4) are connected in a slot, and the size of the front bearing (3) and the top tailstock (4) are matched.

4. The hydrostatic spindle for a cylindrical grinding machine according to claim 1, characterized in that: The main body core shaft (501) and the first oil circuit steering wheel (502) are fixedly connected, and the main body core shaft (501) and the second oil circuit steering wheel (503) are fixedly connected. The first oil circuit steering wheel (502) and the second oil circuit steering wheel (503) are arranged opposite to each other, and the main body core shaft (501), the first oil circuit steering wheel (502) and the second oil circuit steering wheel (503) have the same diameter.

5. The hydrostatic spindle for a cylindrical grinding machine according to claim 1, characterized in that: The second oil circuit steering wheel (503) and the rear bearing (504) are fixedly connected, the rear bearing (504) and the tail bearing sleeve (505) are rotatably connected, and the rear bearing (504) and the tail bearing sleeve (505) are tightly fitted.

6. The hydrostatic spindle for a cylindrical grinding machine according to claim 1, characterized in that: The split bearing seat (506) is connected to the front box body (1) by a slot connection, the split bearing seat (506) is provided with four groups, the surface of the split bearing seat (506) is provided with a rectangular slot, the split bearing seat (506) is connected to the main body core shaft (501) by a rotation connection, the perforated box cover (2) is connected to the oil passage (507) by a slot connection, and the oil passage (507) is connected to the hydraulic interface (508) by a slot connection.

7. The hydrostatic spindle for a cylindrical grinding machine according to claim 1, characterized in that: The front bearing (3) and the shock-absorbing washer (6) are sleeved together, the front bearing (3) and the ring sleeve (7) are sleeved together, and the front bearing (3) and the fixing hole ring (8) are sleeved together. The fixing hole ring (8) is provided with eight groups of circular holes.

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