CN212885065U - Sealed hydraulic braking lathe electric spindle - Google Patents

Abstract

The utility model discloses a sealed hydraulic brake lathe electricity main shaft, including the rotor shaft, the end cover, sealing mechanism, the bearing frame, the bearing group, long spacer, lock nut, the stator water jacket, stator part, the rotor part, a housing, short spacer, hydraulic brake mechanism, the rotor part is fixed at the rotor shaft middle part, set up stator part in the rotor part periphery, stator part fixes middle part in the casing, set up between stator part and casing and install the stator water jacket, the bearing frame suit is at the casing right-hand member, install the bearing group in the bearing frame and compress tightly with the end cover, set up installation sealing mechanism between end cover and bearing group, it is fixed by bearing group and short spacer and lock nut to set up the installation inside the left end of casing. The hydraulic brake mechanism is adopted at the rear end of the electric spindle, so that the spindle is stopped accurately, the time is short, the production efficiency is improved, the sealing mechanism is adopted at the front end of the electric spindle, dust and waste liquid are prevented from entering the spindle, the whole structure of the electric spindle is compact, and the automation degree is high.

Description

Sealed hydraulic braking lathe electric spindle

Technical Field

The utility model belongs to the machine tool functional unit, in particular to sealed hydraulic brake lathe electricity main shaft.

Background

At present, on numerical control machining center equipment generally, a mechanical main shaft and a lathe electric main shaft which are connected through motor driving need to rotate at a high speed, when a tool needs to be replaced or a workpiece needs to be replaced, the main shaft rotating at a high speed cannot be stopped in time due to inertial rotation, waiting time is long, unit cycle of process machining is affected, and meanwhile, the automation degree of the main shaft is low, so that production efficiency is low. The electric main shaft of the mechanical brake device is partially adopted, the whole structure of the main shaft is complex, the occupied space of the machine tool is large, and the automation degree is low. Meanwhile, the front end of the electric spindle of the lathe is close to a machined workpiece, and water and dust easily enter the exposed part, so that the service life of a bearing at the front end of the electric spindle is shortened, and the reliability of the electric spindle is reduced.

Disclosure of Invention

The utility model discloses not enough and the defect to current lathe electricity main shaft technique existence provides a sealed hydraulic brake lathe electricity main shaft, realizes the accurate parking of electricity main shaft, and brake equipment covers the integrated design behind with the main shaft, and occupation space is few, and electricity main shaft front end is provided with dustproof mechanism, and it is high to improve main shaft reliability degree of automation.

The utility model discloses the technical scheme who adopts: a sealed hydraulic brake lathe electric spindle comprises a rotor shaft, an end cover, a sealing mechanism, a bearing seat, a bearing group I, a long spacer bush, a locking nut I, a stator water jacket, a stator component, a rotor component, a shell, a bearing group II, a short spacer bush, a locking nut II and a hydraulic brake mechanism, wherein the rotor component is fixedly arranged in the middle of the rotor shaft, the stator component is arranged on the periphery of the rotor component and fixedly arranged in the middle of the shell, and the stator water jacket is arranged between the stator component and the shell; the bearing seat is fixedly sleeved at the right end of the shell, a bearing group I is arranged in the bearing seat, an end cover is arranged at the right end of the bearing seat, and a sealing mechanism is arranged between the end cover and the bearing group I; a long spacer bush is arranged at the left end of the bearing group I and is fixed by a locking nut I; the left end of the shell is internally provided with a bearing group II, the right end of the bearing group II is fixed with the step of the rotor shaft, and the left end of the bearing group II is provided with a short spacer bush and is fixed by a locking nut II.

Further, the rotor shaft is of a hollow structure, a shaft shoulder structure is arranged on the outer diameter of the right front end of the rotor shaft, two threaded structures are arranged on the left section and the right section of the rotor shaft, a brake ring surface is arranged at the left end of the left threaded structure, and the brake ring surface is matched with the inner diameter of the hydraulic brake mechanism.

The sealing mechanism comprises an end cover, a sealing ring, a labyrinth cover and a labyrinth ring, wherein the end cover is of a hollow structure and is provided with the sealing ring in a matching way, the end cover is provided with a radial air passage, the periphery and the inner periphery of the sealing ring are provided with annular grooves, and radial air holes are uniformly distributed in the annular grooves; a boss structure is arranged at the left end of the labyrinth ring; the left end of the labyrinth cover is provided with a groove structure matched with the boss of the labyrinth ring.

The hydraulic brake mechanism comprises a rear cover, a lining, a pressing sheet and an elastic ring, wherein the rear cover is provided with a radial oil duct and an axial oil duct which are communicated, the lining is arranged in a hollow structure matched mode in the inner diameter of the rear cover, the inner diameter of the lining is matched with the brake ring surface of the rotor shaft, three uniformly distributed grooves are arranged on the circumference of the middle of the lining and are matched with the pressing sheet, the elastic ring is arranged on the outer diameter of the pressing sheet in a matched mode, and an annular groove is formed in the outer periphery of the inner portion.

The utility model has the advantages that: 1. the rear end of the electric main shaft adopts a hydraulic brake mechanism, so that the main shaft is stopped accurately, the stopping time is short, and the production efficiency is improved; 2. the front end of the electric main shaft adopts a sealing mechanism to prevent dust and waste liquid from entering the main shaft, so that the service life of the main shaft is prolonged; 3. the electric spindle has compact integral structure, small occupied space of the machine tool and high automation degree.

Drawings

Fig. 1 is the schematic view of the section structure of the electric spindle of the hydraulic brake lathe of the present invention.

Fig. 2 is the utility model relates to a structural schematic diagram of the rotor shaft of sealed hydraulic brake lathe electricity main shaft.

The reference number in the figure is 100-rotor shaft, 101-shaft shoulder, 102-brake ring surface, 200-end cover, 300-sealing ring, 400-labyrinth cover, 500-labyrinth ring, 600-bearing seat, 700-bearing group I, 800-long spacer, 900-lock nut I, 1000-stator water jacket, 1100-stator part, 1200-rotor part, 1300-shell, 1400-bearing group II, 1500-short spacer, 1600-lock nut II, 1700-rear cover, 1800-bushing, 1900-pressing sheet and 2000-elastic ring.

Detailed Description

The electric spindle of the sealed hydraulic brake lathe of the present invention will be described in more detail with reference to fig. 1-2 and by way of specific embodiments.

In order to more fully explain the utility model and its implementation, embodiments of the present invention are provided. These examples are merely illustrative of the present invention and do not limit the scope of the present invention.

Fig. 1-2 show that the utility model discloses a take electric main shaft of hydraulic brake device, including rotor shaft 100, end cover 200, bearing frame 600, bearing group I700, long spacer 800, lock nut I900, stator water jacket 1000, stator part 1100, rotor part 1200, casing 1300, bearing group II 1400, short spacer 1500, lock nut II 1600, sealing mechanism, hydraulic brake mechanism, rotor part 1200 sets up and fixes in the middle part of rotor shaft 100, is provided with stator part 1100 in the periphery of rotor part 1200, and this stator part 1100 sets up and fixes in the middle part in casing 1300, is provided with the stator water jacket 1000 of cooling effect between stator part 1100 and casing 1300, plays the effect of cooling stator part 1100 through the cooling water circulation; the bearing seat 600 is fixedly sleeved at the right end of the shell 1300, a bearing group I700 is arranged in the bearing seat 600, an end cover 200 is arranged at the right end of the bearing seat 600, and a sealing mechanism is arranged between the end cover 200 and the bearing group I700 to prevent external dust and waste liquid from entering the main shaft; a long spacer 800 is arranged at the left end of the bearing group I700 and is fixed by a locking nut I900, so that the bearing group I700 is prevented from axially shifting; a bearing group II 1400 is arranged inside the left end of the shell 1300, and the right end of the bearing group II 1400 is fixed with the step of the rotor shaft 100; the left end of the bearing set II 1400 is provided with a short spacer sleeve 1500 and fixed by a locking nut II 1600, so that axial movement of the bearing set II 1400 is prevented.

Further, the rotor shaft 100 is of a hollow structure, and a shaft shoulder 101 structure is arranged on the outer diameter of the left front end of the rotor shaft 100 to play a role in axial positioning; the left section and the right section of the rotor shaft 100 are provided with thread structures which are respectively matched with a locking nut I900 and a locking nut II 1600 to play a role in fixing; the left end of the left thread structure is provided with a brake ring surface 102, and the brake ring surface 102 is matched with the inner diameter of the hydraulic brake mechanism.

The sealing mechanism comprises an end cover 200, a sealing ring 300, a labyrinth cover 400 and a labyrinth ring 500, wherein the end cover 200 is of a hollow structure and is provided with the sealing ring 300 in a matching way, the end cover 200 is provided with a radial air passage, annular grooves are formed in the outer periphery and the inner periphery of the sealing ring 300, radial air holes are uniformly distributed in the annular grooves, external high-pressure air can reach the outer surface of a shaft shoulder 101 of the rotor shaft 100 through the radial air passage of the end cover 200 and the radial air holes of the sealing ring, and air flow is formed to prevent external dust and waste liquid from entering the main shaft; a boss structure is arranged at the left end of the labyrinth ring 500; the left end of the labyrinth cover 400 is provided with a groove structure matched with the boss of the labyrinth ring 500; the matched convex-concave groove structure of the labyrinth cover 400 and the labyrinth ring 500 forms a labyrinth structure, and external dust and waste liquid are prevented from entering the inside of the main shaft.

The brake mechanism comprises a rear cover 1700, a bushing 1800, a pressing sheet 1900 and an elastic ring 2000, wherein the rear cover 1700 is provided with a radial oil passage and an axial oil passage which are communicated with each other, the inner diameter of the rear cover 1700 is provided with a hollow structure which is matched with the bushing 1800, the inner diameter of the bushing 1800 is matched with a brake ring surface 102 of the rotor shaft 100, the middle circumference of the bushing 1800 is provided with three uniformly distributed grooves and is matched with the pressing sheet 1900, the outer diameter of the pressing sheet 1900 is provided with the elastic ring 2000 which is matched with the elastic ring 2000, and the middle periphery of the elastic ring 2000; the pressure oil enters the groove of the elastic ring through the radial oil passage of the rear cover 1700, the pressing sheet 1900 is pressed by the elastic expansion force of the elastic ring, the pressing sheet 1900 is tightly contacted with the outer diameter surface of the brake ring surface 102 of the rotor shaft 100 under the stress, the frictional resistance is increased, and the braking effect is achieved.

The utility model discloses a use or operating condition: firstly, an external frequency converter drives the rotor shaft 100 of the lathe electric spindle to rotate at a high speed through the stator component 1100 and the rotor component 1200, when a tool or a workpiece needs to be replaced, pressure oil provided by an external hydraulic station enters the groove of the elastic ring 2000 through the radial oil passage of the rear cover 1700, the pressing sheet 1900 is pressed through the elastic expansion force of the elastic ring 2000, the pressing sheet 1900 is tightly contacted and attached to the outer diameter surface of the brake ring surface 102 of the rotor shaft 100 under the stress, the friction resistance is increased, and the braking effect is achieved.

External high-pressure gas can reach the outer surface of the shaft shoulder 101 of the rotor shaft 100 through the radial gas passages of the end cover 200 and the radial gas holes of the sealing ring 500 to form gas flow to prevent external dust and waste liquid from entering the main shaft; meanwhile, the labyrinth ring 500 and the labyrinth cover 400 are in a matched convex-concave groove structure to form a labyrinth structure, so that external dust and waste liquid are further prevented from entering the main shaft.

The above-mentioned embodiments should not be construed as limiting the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the scope of the present invention.

Claims (4)

1. The utility model provides a sealed hydraulic brake lathe electricity main shaft, includes rotor shaft (100), end cover (200), bearing frame (600), bearing group I (700), long spacer (800), lock nut I (900), stator water jacket (1000), stator part (1100), rotor part (1200), casing (1300), bearing group II (1400), short spacer (1500), lock nut II (1600), sealing mechanism, hydraulic brake mechanism, its characterized in that: the rotor component (1200) is fixedly arranged in the middle of the rotor shaft (100), the stator component (1100) is arranged on the periphery of the rotor component (1200), the stator component (1100) is fixedly arranged in the middle of the inside of the shell (1300), and the stator water jacket (1000) is arranged between the stator component (1100) and the shell (1300); the bearing seat (600) is fixedly sleeved at the right end of the shell (1300), a bearing group I (700) is arranged in the bearing seat (600), an end cover (200) is arranged at the right end of the bearing seat (600), and a sealing mechanism is arranged between the end cover (200) and the bearing group I (700); a long spacer bush (800) is arranged at the left end of the bearing group I (700) and is fixed by a locking nut I (900); a bearing group II (1400) is arranged in the left end of the shell (1300), the right end of the bearing group II (1400) is fixed with the step of the rotor shaft (100), and the left end of the bearing group II (1400) is provided with a short spacer bush (1500) and is fixed by a locking nut II (1600).

2. The sealed hydraulic brake lathe electric spindle of claim 1, characterized in that: the rotor shaft (100) is of a hollow structure, a shaft shoulder structure (101) is arranged on the outer diameter of the right front end of the rotor shaft (100), two threaded structures are arranged on the left section and the right section of the rotor shaft (100), a brake ring surface (102) is arranged at the left end of the left threaded structure, and the brake ring surface (102) is matched with the inner diameter of a hydraulic brake mechanism.

3. The sealed hydraulic brake lathe electric spindle of claim 1, characterized in that: the sealing mechanism comprises an end cover (200), a sealing ring (300), a labyrinth cover (400) and a labyrinth ring (500), wherein the end cover (200) is of a hollow structure and is provided with the sealing ring (300) in a matching way, the end cover (200) is provided with a radial air passage, the periphery and the inner periphery of the sealing ring (300) are provided with annular grooves, and radial air holes are uniformly distributed in the annular grooves; a boss structure is arranged at the left end of the labyrinth ring (500); the left end of the labyrinth cover (400) is provided with a groove structure matched with a boss of the labyrinth ring (500).

4. The sealed hydraulic brake lathe electric spindle of claim 1, characterized in that: the hydraulic brake mechanism comprises a rear cover (1700), a bushing (1800), a pressing sheet (1900) and an elastic ring (2000), wherein the rear cover (1700) is provided with a communicated radial oil passage and an axial oil passage, the inner diameter of the rear cover (1700) is provided with a hollow structure matched with the bushing (1800), the inner diameter of the bushing (1800) is matched with a brake ring surface (102) of a rotor shaft (100), the circumference of the middle part of the bushing (1800) is provided with three uniformly distributed grooves and is matched with the pressing sheet (1900), the outer diameter of the pressing sheet (1900) is provided with the elastic ring (2000) in a matched mode, and the periphery of the middle part of the elastic ring (2000) is provided with an.

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