CN211708674U

CN211708674U - Numerical control machine tool with brake contracting device

Info

Publication number: CN211708674U
Application number: CN202020281993.5U
Authority: CN
Inventors: 卫连生; 石鑫; 葛建伟; 贺子龙; 姬志恒
Original assignee: Headman Shanghai Automation Technology Co ltd
Current assignee: Headman Shanghai Automation Technology Co ltd
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2020-10-20
Anticipated expiration: 2030-03-09

Abstract

The utility model provides a digit control machine tool with band-type brake ware belongs to mechanical technical field. The problem that an existing band-type brake in a machine tool is inconvenient to install and the like is solved. This digit control machine tool with band-type brake ware, including headstock and main shaft, the main shaft left end is fixed with the belt pulley, be fixed with the brake disc on the belt pulley, the band-type brake ware passes through connecting piece and headstock fixed connection, be provided with the mounting plane on the trailing flank of headstock left end, the connecting piece is including being platelike horizontal board, horizontal board passes through fixing bolt to be fixed on the mounting plane, be equipped with on the horizontal board and be banding mounting hole, fixing bolt wears to establish in the mounting hole, vertical board has on the left end of horizontal board, an organic whole is connected with the reinforcing plate between horizontal board and the vertical board, the band-type brake ware pastes to lean on vertical board and through mounting bolt fixed connection, mounting bolt passes behind the vertical board with band-type brake ware threaded connection, mounting bolt has two and is located the both. The machine tool has the advantages of convenient installation of the brake clasper and the like.

Description

Numerical control machine tool with brake contracting device

Technical Field

The utility model belongs to the technical field of machinery, a digit control machine tool with band-type brake ware is related to.

Background

The machine tool is a common processing device and comprises a lathe, a milling machine, a drilling machine and the like, a numerical control system is added on the machine tool, and the machine tool which realizes automatic control through a numerical control technology is the numerical control machine tool. A lathe is a machine tool for turning a rotating workpiece mainly with a lathe tool, and a milling machine is a machine tool for milling various surfaces of a workpiece. In the lathe, a workpiece rotates, and a turning tool turns the rotating workpiece through feed motion; in a milling machine, a workpiece generally does not perform a rotational motion, and the workpiece is milled by performing a feed motion by a rotating milling cutter without moving the workpiece, or the workpiece is milled by performing a feed motion by a rotating milling cutter. When the radial position of a workpiece is milled on a lathe, the workpiece is required to rotate to a specific angle position, then the spindle is tightly held by the band-type brake to prevent rotation, and then milling operation is performed.

The band-type brake is also called brake caliper, a main shaft transmission device with main shaft caliper of a numerical control turning and milling compound machine (application number: CN 201020295225.1; the notice number is: 201792241U ], including a spindle base fixed on the machine body, a shaft sleeve is installed on the spindle base, the spindle sleeve is installed in the shaft sleeve, the front end and the rear end of the spindle sleeve respectively extend out of the shaft sleeve, a belt pulley connected with a servo motor on the machine body through a belt is arranged at the rear end of the spindle, a circular brake pad is arranged on one side of the belt pulley, and a brake caliper is installed and fixed on the spindle base corresponding to the brake pad. The brake caliper comprises a frame, a cylinder and a chuck capable of clamping a brake pad, wherein the frame is connected with the spindle seat through a connecting block.

The mounting position of brake caliper is located the below of main shaft rear end to be located servo motor's one side, when installing brake caliper through the connecting block, receive the interference of servo motor and belt easily, thereby lead to the brake caliper installation inconvenient.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, provide a digit control machine tool with band-type brake ware, solved the inconvenient technical problem of band-type brake ware installation in the current lathe.

The purpose of the utility model can be realized by the following technical proposal:

a numerical control machine tool with a brake caliper comprises a base, wherein a machine tool body is fixed on the upper surface of the base, a spindle box is fixedly connected to the left end of the machine tool body, a rotatable spindle is installed in the spindle box, the left end of the spindle extends out of the spindle box and is fixedly connected with a belt pulley, a motor base is fixed on the left end surface of the base, a driving motor is fixedly connected to the motor base and is connected with the belt pulley through a belt, a brake disc is fixedly connected to the belt pulley, the brake caliper which corresponds to the brake disc is fixedly connected to the spindle box and is fixedly connected with the spindle box through a connecting piece, the numerical control machine tool is characterized in that an installation plane is arranged on the rear side surface of the left end of the spindle box, the connecting piece comprises a platy transverse plate, a positioning surface is arranged on the transverse plate and is attached to the installation plane, the transverse plate is fixedly connected to the mounting plane through a fixing bolt, a strip-shaped mounting hole is formed in the transverse plate in an extending mode along the left-right direction, the fixing bolt is arranged in the mounting hole in a penetrating mode, a longitudinal plate which is perpendicular to the transverse plate and protrudes out of the positioning face is arranged at the left end of the transverse plate, a reinforcing plate is integrally connected between the transverse plate and the right end face of the longitudinal plate, the right end face of the contracting brake device is attached to the left end face of the longitudinal plate and is fixedly connected with the mounting bolt, the mounting bolt penetrates through the longitudinal plate from the right side of the longitudinal plate and is in threaded connection with the contracting brake device, and the mounting bolt is provided with two sides which are respectively located on the reinforcing plate.

The band-type brake passes through connecting piece fixed connection on the mounting plane of headstock trailing flank, and the band-type brake separates with driving motor and belt, avoids the appearance of installation interference, makes band-type brake simple to operate. When the brake band-type device is installed, the brake band-type device is fixedly connected to the longitudinal plate, then the transverse plate is fixedly connected to the spindle box, when the transverse plate is fixed, the fixing bolt penetrates through the installation hole and is not screwed down when being screwed into the spindle box, the transverse plate is moved left and right, the position between the brake band-type device and the brake disc is moderate, and then the fixing bolt is screwed down for fixing. Because the band-type brake is leaned on and is fixed on the left end face of vertical board, the band-type brake is fixed a position accurately on the left and right sides direction of connecting piece, is provided with the reinforcing plate that can additional strengthening intensity between vertical board and the horizontal board moreover, makes connecting piece overall structure stable, and two construction bolts are located the both sides of reinforcing plate respectively simultaneously, and the atress is even after the band-type brake is fixed, makes the band-type brake fixed stable on the connecting piece. Because the contracting brake device is fixed stably on the connecting piece, when the position of the contracting brake device is installed and adjusted, the error generated by looseness between the contracting brake device and the connecting piece in the working process does not need to be considered, and therefore the contracting brake device is convenient to install. In the fixing process of the connecting piece and the spindle box, the positioning surface on the transverse plate is attached to the mounting plane on the spindle box for positioning, so that accurate radial positioning can be realized; after the radial positioning is finished, the mounting plane is used as a positioning reference, and the axial positioning adjustment can be quickly finished by moving the transverse plate left and right, so that the band-type brake is convenient to mount.

In foretell digit control machine tool with band-type brake ware, brake disc fixed connection is on the left end of belt pulley, fixedly connected with response dish on the right-hand member of belt pulley, be fixed with the sensor that corresponds the setting with the response dish on the left end face of headstock, the transverse plate is located the outside of sensor and just to setting up with the sensor.

The position relation ensures that the sensor and the brake do not interfere with each other, and the stability of the operation of the machine tool is ensured. The transverse plate is blocked outside the sensor, so that the sensor is protected to a certain extent, and the working accuracy and stability of the sensor are improved.

In foretell digit control machine tool with band-type brake ware, be provided with the convex annular holding ring that is on the right-hand member face of brake disc, be provided with positioning groove on the left end face of belt pulley, the right-hand member face of brake disc pastes and leans on the left end face of belt pulley, the holding ring is embedded into in the positioning groove and the outside face of holding ring pastes and leans on positioning groove's lateral wall face.

The right end face of the brake disc is attached to the left end face of the belt pulley, so that the belt pulley and the brake disc are accurately axially positioned. The positioning ring is embedded into the positioning groove, and the outer side face of the positioning ring is attached to the side wall face of the positioning groove, so that the belt pulley and the brake disc are accurately positioned in the radial direction, and the brake device matched with the brake disc is convenient to mount and position.

In foretell digit control machine tool with band-type brake, be provided with convex bulge loop on the right-hand member face of belt pulley, the left end fixedly connected with left end lid of headstock, be provided with left bearing between left end lid and the main shaft, the right side that lies in left bearing on the lateral surface of main shaft is provided with the fender shoulder, be provided with the location retaining ring between the inner circle of left bearing and the fender shoulder, the bulge loop supports and leans on the left end face of left bearing inner circle. The belt pulley and the left bearing are convenient to mount and position.

In foretell digit control machine tool with band-type brake ware, the cover is equipped with solid fixed ring on the bulge loop, gu fixed ring's left end face pastes and leans on the right-hand member face of belt pulley and fixes, the response dish suit is fixed on solid fixed ring, be fixed with the fixed block on the left end lid, sensor fixed connection is on the left end face of fixed block.

The induction disc is indirectly installed and fixed on the belt pulley through the fixing ring, the sensor is indirectly fixed on the spindle box through the fixing block, and positioning adjustment of the induction disc and the sensor is facilitated, so that the induction disc and the sensor are accurately positioned, and the work is stable.

Compared with the prior art, the utility model has the advantages of it is following:

the rear side face of the spindle box is provided with a mounting plane, the transverse plate of the connecting piece is provided with a positioning surface, the positioning surface is attached to the mounting plane for positioning, the transverse plate is provided with a strip-shaped mounting hole, a reinforcing plate is arranged between the longitudinal plate and the transverse plate, the band-type brake is fixed on the longitudinal plate, and the mounting bolts are respectively located on two sides of the reinforcing plate, so that the band-type brake is convenient to position and mount. The brake disc is arranged at the left end of the belt pulley, the induction disc is arranged at the right end of the belt pulley, and the transverse plate is located on the outer side of the sensor and faces the sensor, so that the working stability of the machine tool is guaranteed. The arrangement of the positioning ring and the positioning groove enables the brake disc and the belt pulley to be accurately positioned.

Drawings

FIG. 1 is a perspective view of the numerically controlled machine tool with a brake contracting device;

FIG. 2 is a partial sectional view of the numerically controlled machine tool with a brake at the brake;

FIG. 3 is a perspective view of the contracting brake device and the connecting member of the numerically-controlled machine tool with the contracting brake device.

In the figure, 1, a base; 2. a bed body; 3. a motor base; 4. a drive motor; 5. a main spindle box; 5a, a mounting plane; 6. a main shaft; 6a, a shoulder; 7. a belt pulley; 7a, a convex ring; 7b, positioning grooves; 8. a belt; 9. a left end cap; 10. a left bearing; 11. positioning a retainer ring; 12. a fixing ring; 13. an induction disc; 14. a fixed block; 15. a sensor; 16. a brake disc; 16a, a positioning ring; 17. a brake contracting device; 18. a connecting member; 18a, a transverse plate; 18a1, positioning surface; 18a2, mounting holes; 18b, longitudinal plates; 18c, a reinforcing plate; 19. fixing the bolt; 20. and (6) installing a bolt.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1-3, a numerically-controlled machine tool with a brake contracting device comprises a base 1, a machine bed 2 is fixed on the upper surface of the base 1, a motor base 3 is fixed on the left end surface of the base 1, and a driving motor 4 is fixedly connected to the motor base 3. Fixedly connected with headstock 5 on 2 left ends of lathe beds, install rotatable main shaft 6 in the headstock 5, the left end of main shaft 6 stretches out headstock 5 and fixedly connected with belt pulley 7, and driving motor 4 passes through the belt 8 and is connected with belt pulley 7.

A convex ring 7a is arranged on the right end face of the belt pulley 7, a left end cover 9 is fixedly connected to the left end of the spindle box 5, a left bearing 10 is arranged between the left end cover 9 and the spindle 6, a retaining shoulder 6a is arranged on the outer side face of the spindle 6 and located on the right side of the left bearing 10, a positioning retaining ring 11 is fixed between the inner ring of the left bearing 10 and the retaining shoulder 6a, and the convex ring 7a abuts against the left end face of the inner ring of the left bearing 10. The convex ring 7a is sleeved with a fixed ring 12, the left end face of the fixed ring 12 is attached to the right end face of the belt pulley 7, and the fixed ring 12 is fixed on the belt pulley 7 through bolts. The cover is equipped with response dish 13 on solid fixed ring 12, has convex fender ring on solid fixed ring 12's the lateral surface, and response dish 13 is located fender ring left side, and the right-hand member face of response dish 13 pastes and leans on fender ring and pass through the bolt fastening. A fixed block 14 is fixed on the left end face of the left end cover 9, and a sensor 15 arranged corresponding to the induction disc 13 is fixed on the left end face of the fixed block 14.

The belt pulley 7 is also fixedly connected with a brake disc 16, and the brake disc 16 is fixedly connected to the left end of the belt pulley 7. A protruding annular positioning ring 16a is arranged on the right end face of the brake disc 16, a positioning groove 7b is arranged on the left end face of the belt pulley 7, the right end face of the brake disc 16 abuts against the left end face of the belt pulley 7, the positioning ring 16a is embedded into the positioning groove 7b, and the outer side face of the positioning ring 16a abuts against the side wall face of the positioning groove 7 b. The left end of the brake disc 16 is connected with the rotary oil cylinder.

The main spindle box 5 is fixedly connected with a brake device 17 which is arranged corresponding to the brake disc 16, and the brake device 17 comprises a cylinder body and a left brake piece and a right brake piece which are respectively positioned at the left side and the right side of the brake disc 16. A left hydraulic cavity and a right hydraulic cavity are arranged in the cylinder body, a left piston is arranged in the left hydraulic cavity, and a telescopic rod of the left piston is fixed with a left brake disc; and a right piston is arranged in the right hydraulic cavity, and a telescopic rod of the right piston is fixed with the right brake block. The telescopic rod of the left piston is sleeved with a left spring, and the telescopic rod of the right piston is sleeved with a right spring. An oil through port, a left oil through channel and a right oil through channel are further arranged on the cylinder body, one end of the left oil through channel is communicated with the oil through port, and the other end of the left oil through channel is communicated with the left hydraulic cavity; one end of the right oil through channel is communicated with the oil through port, and the other end of the right oil through channel is communicated with the right hydraulic cavity. An oil passing connector is fixed in the oil passing port, when hydraulic oil is injected into the cylinder body through the oil passing connector, the hydraulic oil enters the left hydraulic cavity through the left oil passing channel and drives the left piston to move rightwards, meanwhile, the hydraulic oil enters the right hydraulic cavity through the right oil passing channel and drives the right piston to move leftwards, so that the left brake block and the right brake block move oppositely to clamp the brake disc 16, and band-type brake braking is achieved. When hydraulic oil is not injected into the cylinder body any more, under the action of the left spring and the right spring, the left piston moves leftwards, and the right piston moves rightwards, so that the left brake disc and the right brake disc move oppositely to release the brake disc 16. The band-type brake 17 with the left spring and the right spring can enable the left brake piece and the right brake piece to be far away from the brake disc 16 when the brake disc 16 is prevented from loosening, so that excessive abrasion of the left brake piece and the right brake piece is avoided, the service life of the band-type brake 17 is prolonged, and the long-term working stability of the band-type brake 17 is improved. And hydraulic oil is introduced through the oil inlet, so that the actions of the left brake piece and the right brake piece can be synchronously carried out, the band-type brake 17 works stably, and the machine tool works stably in the machining process.

The brake device 17 is fixedly connected with the main spindle box 5 through a connecting piece 18. The rear side surface of the left end of the main spindle box 5 is provided with a mounting plane 5a, and the connecting piece 18 is fixedly connected to the mounting plane 5 a. The connecting element 18 comprises a plate-shaped transverse plate 18a, the transverse plate 18a having a positioning surface 18a1, the positioning surface 18a1 abutting against the mounting surface 5 a. The transverse plate 18a is fixedly connected to the mounting plane 5a through a fixing bolt 19, and the transverse plate 18a is provided with mounting holes 18a2 extending in a strip shape along the left-right direction, namely the mounting holes 18a2 are strip-shaped holes, and four mounting holes 18a2 are arranged in two rows and two columns. The fixing bolt 19 passes through the mounting hole 18a2 and then is in threaded connection with the spindle box 5, an open washer and a gasket are sleeved on the fixing bolt 19, and the open washer and the gasket are positioned between the head of the fixing bolt 19 and the transverse plate 18a and can be used for preventing the fixing bolt 19 from loosening. The transverse plate 18a has a longitudinal plate 18b at its left end which is perpendicular to the transverse plate 18a and projects beyond the positioning face 18a1, and a reinforcing plate 18c is integrally connected between the transverse plate 18a and the right end face of the longitudinal plate 18 b. The right end face of the brake band-type device 17 abuts against the left end face of the longitudinal plate 18b and is fixedly connected with the left end face of the longitudinal plate 18b through the mounting bolts 20, the mounting bolts 20 penetrate through the longitudinal plate 18b from the right side of the longitudinal plate 18b and are in threaded connection with the brake band-type device 17, and two mounting bolts 20 are arranged and are respectively located on two sides of the reinforcing plate 18 c. The transverse plate 18a is located outside the sensor 15 and opposite the sensor 15.

The band-type brake 17 is fixedly connected to the mounting plane 5a on the rear side face of the spindle box 5 through a connecting piece 18, and the band-type brake 17 is separated from the driving motor 4 and the belt 8, so that the occurrence of installation interference is avoided, and the band-type brake 17 is convenient to install. When the brake caliper 17 is installed, the brake caliper 17 is fixedly connected to the longitudinal plate 18b, then the transverse plate 18a is fixedly connected to the spindle box 5, when the transverse plate 18a is fixed, the fixing bolt 19 does not need to be screwed down when penetrating through the installation hole 18a2 and being screwed into the spindle box 5, the transverse plate 18a is moved left and right by taking the installation plane 5a as a positioning reference, the brake disc 16 is positioned between the left moderate brake pad and the right brake pad, and then the fixing bolt 19 is screwed down for fixing. Because the contracting brake 17 is attached to and fixed on the left end face of the longitudinal plate 18b, the contracting brake 17 is accurately positioned in the left-right direction of the connecting piece 18, and a reinforcing plate 18c capable of reinforcing the structural strength is arranged between the longitudinal plate 18b and the transverse plate 18a, so that the whole structure of the connecting piece 18 is stable, meanwhile, the two mounting bolts 20 are respectively positioned on two sides of the reinforcing plate 18c, the stress of the contracting brake 17 after being fixed is uniform, and the contracting brake 17 is fixed and stable on the connecting piece 18. Because the contracting brake 17 is accurately positioned and stably fixed on the connecting piece 18, when the position of the contracting brake 17 is installed and adjusted, the error caused by looseness between the contracting brake 17 and the connecting piece 18 in the working process does not need to be considered, so that the contracting brake 17 is convenient to install. In the fixing process of the connecting piece 18 and the spindle box 5, the positioning surface 18a1 on the transverse plate 18a is abutted and positioned with the mounting plane 5a on the spindle box 5, so that accurate radial positioning can be realized; after the radial positioning is finished, the mounting plane 5a is used as a positioning reference, and the axial positioning adjustment can be quickly finished by moving the transverse plate 18a left and right, so that the brake 17 is convenient to mount. Moreover, the position between the brake device 17 and the brake disc 16 is moderate, so that the brake device 17 can be stably braked, and the machine tool can stably work.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A numerical control machine tool with a brake caliper comprises a base (1), wherein a machine body (2) is fixed on the upper surface of the base (1), a spindle box (5) is fixedly connected to the left end of the machine body (2), a rotatable spindle (6) is installed in the spindle box (5), the left end of the spindle (6) extends out of the spindle box (5) and is fixedly connected with a belt pulley (7), a motor base (3) is fixed on the left end surface of the base (1), a driving motor (4) is fixedly connected to the motor base (3), the driving motor (4) is connected with the belt pulley (7) through a belt (8), a brake disc (16) is fixedly connected to the belt pulley (7), the brake caliper (17) corresponding to the brake disc (16) is fixedly connected to the spindle box (5), and the brake caliper (17) is fixedly connected with the spindle box (5) through a connecting piece (18), the spindle box is characterized in that a mounting plane (5a) is arranged on the rear side face of the left end of the spindle box (5), the connecting piece (18) comprises a plate-shaped transverse plate (18a), a positioning surface (18a1) is arranged on the transverse plate (18a), the positioning surface (18a1) is attached to the mounting plane (5a), the transverse plate (18a) is fixedly connected to the mounting plane (5a) through a fixing bolt (19), a mounting hole (18a2) extending in a strip shape along the left-right direction is formed in the transverse plate (18a), the fixing bolt (19) penetrates through the mounting hole (18a2), a longitudinal plate (18b) which is perpendicular to the transverse plate (18a) and protrudes out of the positioning surface (18a1) is arranged at the left end of the transverse plate (18a), and a reinforcing plate (18c) is integrally connected between the transverse plate (18a) and the right end face of the longitudinal plate (18b), the right end face of contracting brake ware (17) pastes and leans on the left end face of vertical board (18b) and through construction bolt (20) fixed connection, construction bolt (20) pass vertical board (18b) back and contracting brake ware (17) threaded connection from the right side of vertical board (18b), construction bolt (20) have two and are located the both sides of reinforcing plate (18c) respectively.

2. The numerical control machine tool with a brake is characterized in that the brake disc (16) is fixedly connected to the left end of the belt pulley (7), the right end of the belt pulley (7) is fixedly connected with the induction disc (13), the left end face of the spindle box (5) is fixedly provided with a sensor (15) which is arranged corresponding to the induction disc (13), and the transverse plate (18a) is located on the outer side of the sensor (15) and is arranged opposite to the sensor (15).

3. The numerically-controlled machine tool with a brake band, according to claim 2, characterized in that a protruding annular positioning ring (16a) is arranged on the right end face of the brake disc (16), a positioning groove (7b) is arranged on the left end face of the belt pulley (7), the right end face of the brake disc (16) abuts against the left end face of the belt pulley (7), the positioning ring (16a) is embedded into the positioning groove (7b) and the outer side face of the positioning ring (16a) abuts against the side wall face of the positioning groove (7 b).

4. The numerical control machine tool with the band brake is characterized in that a protruding convex ring (7a) is arranged on the right end face of the belt pulley (7), a left end cover (9) is fixedly connected to the left end of the spindle box (5), a left bearing (10) is arranged between the left end cover (9) and the spindle (6), a retaining shoulder (6a) is arranged on the outer side face of the spindle (6) and located on the right side of the left bearing (10), a positioning retaining ring (11) is arranged between the inner ring of the left bearing (10) and the retaining shoulder (6a), and the convex ring (7a) abuts against the left end face of the inner ring of the left bearing (10).

5. The numerical control machine tool with the brake contracting device as claimed in claim 4, wherein the protruding ring (7a) is sleeved with a fixing ring (12), the left end face of the fixing ring (12) is attached to and fixed on the right end face of the belt pulley (7), the sensing disc (13) is sleeved and fixed on the fixing ring (12), the left end cover (9) is fixed with a fixing block (14), and the sensor (15) is fixedly connected to the left end face of the fixing block (14).