Assembling structure of machining main shaft

Abstract

The utility model discloses an assembling structure of a machining main shaft, which comprises a main shaft box, a box cover is arranged on the upper side of the main shaft box through a bolt, embedded grooves are arranged in the main shaft box and the front side wall body and the rear side wall body of the box cover, a bearing is clamped between every two adjacent embedded grooves, a main shaft is arranged between the bearings, and the assembling structure further comprises a stable assembling mechanism. The stable mounting mechanism comprises a bidirectional lead screw, sliding seats, a connecting rod, an arc-shaped lifting seat, a dovetail groove, a longitudinal moving seat and a longitudinal moving assembly, the bidirectional lead screw is rotationally connected between the left wall and the right wall of the spindle box through a first bearing, and the left end and the right end of the bidirectional lead screw are both in threaded connection with the sliding seats. By means of threaded connection transmission of the lead screw, the main shaft can be stably installed in the main shaft box, the situation that the main shaft assembling precision is reduced due to the collision damage phenomenon is avoided, the mechanism can be used when the main shaft is moved out of and moved into the main shaft box during later-period main shaft maintenance, and operation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of spindle assembly, concretely to an assembly structure of machining spindle. BACKGROUND

[0002] Machining refers to the process of changing the shape size or performance of workpiece by a mechanical equipment, power output is carried out through the spindle in the machining process, the spindle is fixed through the assembly structure, in the prior art: the patent with the authorization publication number CN209174911 U discloses a direct connection spindle assembly mechanism, including spindle box, the spindle box is provided with spindle sleeve, the spindle sleeve is fixedly provided with direct connection spindle in, the top of direct connection spindle is provided with first coupling shaft sleeve, the spindle box is provided with motor seat, the motor seat is provided with main motor, the motor seat is provided with motor connecting plate between main motor and motor, the end of main motor is provided with second coupling shaft sleeve, and first coupling shaft sleeve and second coupling shaft sleeve are engaged;The upper plane of the spindle box is provided with an automatic compensation balancing device, the automatic compensation balancing device is used for balancing the weight of the spindle box, the automatic compensation balancing device includes a bracket, a balance cylinder and a piston rod are arranged on the bracket, the tail of the piston rod is provided with a floating joint, the floating joint is connected with the spindle box, the direct connection spindle can process parts with high precision and high speed, the precision performance of the machine tool is maintained, the weight of the spindle box can be well balanced, and the wear of the ball screw of the transmission mechanism is reduced, however, when the device assembles the spindle, the installation connection parts of the spindle and the spindle box are more, since the mass of the spindle itself is heavy, the spindle needs to be suspended by external suspension tools, and the suspension parts of the suspension tools are prone to shaking, so that the workers assemble the spindle into the spindle box by means of tools, and the collision phenomenon between the spindle and the spindle box is prone to occur due to shaking, which affects the assembly precision, and needs to be improved, therefore, we provide an assembly structure of machining spindle. UTILITY MODEL CONTENTS

[0003] The utility model solves the technical problem of overcoming the defects of the prior art, and provides an assembly structure of machining spindle, which can stably assemble the spindle into the spindle box through the transmission element and the threaded connection transmission of the lead screw, avoid the reduction of the spindle assembly precision caused by the collision phenomenon, and use the mechanism when the spindle is removed and assembled into the spindle box, so that the operation is convenient, and the problems in the background art can be effectively solved.

[0004] To achieve the above object, the utility model provides the following technical scheme: an assembly structure of machining spindle, including spindle box, the upper side of the spindle box is provided with the lid through bolt mounting, the front and rear two side walls of the spindle box and the lid are all provided with embedded groove, the adjacent two embedded grooves are all provided with bearing, the bearing is provided with spindle, and the assembly structure further includes a stable assembly mechanism.

[0005] The stabilizing mechanism includes a bidirectional lead screw, a slide block, a connecting rod, an arc-shaped lifting seat, a dovetail groove, a longitudinal sliding seat, and a longitudinal sliding assembly. The bidirectional lead screw is rotatably connected to the left and right walls of the spindle box via a bearing. Both ends of the bidirectional lead screw are threadedly connected to slide blocks. Both ends of the slide blocks are rotatably connected to connecting rods via a shaft. The upper ends of the connecting rods are rotatably connected to an arc-shaped lifting seat via a shaft. A longitudinal sliding seat is slidably connected in the dovetail groove on the inner side of the arc-shaped lifting seat. A longitudinal sliding assembly is provided between the spindle box, the arc-shaped lifting seat, and the longitudinal sliding seat. This device, through a transmission element and the threaded connection of the lead screw, can smoothly install the spindle into the spindle box, avoiding damage that could reduce the spindle assembly accuracy. Furthermore, this mechanism can be used for easy removal and insertion of the spindle into the spindle box during subsequent maintenance.

[0006] Furthermore, the longitudinal movement assembly includes a lead screw, a rectangular shell, a rectangular slide rod, and a through groove. The lead screw is rotatably connected between the front and rear walls of the spindle box via a bearing. The outer side of the lead screw is threadedly connected to the rectangular shell, and the rectangular slide rod is slidably connected inside the rectangular shell. A through groove is opened in the middle of the dovetail groove, and the upper end of the rectangular slide rod passes through the through groove and is fixedly connected to the outer arc surface of the longitudinal movement seat, thereby adjusting the longitudinal assembly position of the spindle within the assembly structure of the machining spindle.

[0007] Furthermore, the longitudinal movement assembly also includes stabilizer bars, which are symmetrically arranged between the front and rear walls of the spindle box. The outer side of the rectangular shell is slidably connected to the adjacent stabilizer bars through round holes, thereby improving the longitudinal movement stability of the rectangular shell within the assembly structure of the machining spindle.

[0008] Furthermore, the mounting mechanism also includes adjustment knobs, which are respectively located at the right end and the front end of the bidirectional lead screw, for adjusting the lead screw and the bidirectional lead screw within the assembly structure of the machining spindle.

[0009] Furthermore, the lower side of the slide block makes sliding contact with the bottom wall of the spindle box to prevent rotation during the translation of the slide block within the assembly structure of the machining spindle.

[0010] Furthermore, a rubber sealing ring is provided on the upper side of the spindle box to improve the sealing performance between the spindle box and the cover within the assembly structure of the machining spindle.

[0011] Furthermore, the lower left and right ends of the spindle box are provided with evenly distributed mounting holes, which facilitates the installation and fixation of the spindle box of the machining spindle assembly structure.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the assembly structure of the machine tool spindle has the following advantages:

[0013] When using the assembly structure of a machining spindle, the spindle can be smoothly installed into the spindle box through components such as a two-way lead screw, slide, connecting rod, arc-shaped lifting seat, longitudinal sliding seat, and longitudinal sliding assembly, using the threaded connection of the lead screw. This avoids damage to the spindle and reduces the assembly accuracy. Furthermore, this mechanism can be used to move the spindle in and out of the spindle box during subsequent maintenance without the need for external suspension tools, making it convenient to operate. Attached Figure Description

[0014] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0015] Fig. 2 This is a schematic diagram of the disassembled structure of this utility model;

[0016] Fig. 3 This is a schematic diagram of the spindle box structure of this utility model.

[0017] In the diagram: 1. Spindle box, 2. Box cover, 3. Embedded groove, 4. Bearing, 5. Spindle, 6. Stabilizing mechanism, 61. Two-way lead screw, 62. Slide, 63. Connecting rod, 64. Arc-shaped lifting seat, 65. Dovetail groove, 66. Longitudinal sliding seat, 67. Longitudinal sliding assembly, 671. Lead screw, 672. Rectangular shell, 673. Rectangular slide rod, 674. Through groove, 675. Stabilizing rod, 68. Adjustment knob, 7. Rubber sealing ring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figs. 1-3 This embodiment provides a technical solution: an assembly structure for a machining spindle, including a spindle housing 1, a cover 2 bolted to the upper side of the spindle housing 1, recessed grooves 3 on both the front and rear side walls of the spindle housing 1 and the cover 2, bearings 4 clamped between adjacent recessed grooves 3, a spindle 5 between the bearings 4, and evenly distributed mounting holes on the lower left and right sides of the spindle housing 1. When assembling the machining spindle, the spindle housing 1 is first installed with screws through the mounting holes, and the bearings 4 are interference-fitted to the outside of the spindle 5. The operator places the machining spindle on the inner arc surface of the longitudinal shift seat 66 (the initial position of the longitudinal shift seat 66 is above the spindle housing 1). It also includes a stabilizing mechanism 6.

[0020] The stabilizing mechanism 6 includes a bidirectional lead screw 61, a slide block 62, a connecting rod 63, an arc-shaped lifting seat 64, a dovetail groove 65, a longitudinal shift seat 66, and a longitudinal shift assembly 67. The bidirectional lead screw 61 is rotatably connected between the left and right walls of the spindle box 1 via a bearing. Both ends of the bidirectional lead screw 61 are threaded to the slide block 62. Both ends of the slide block 62 are rotatably connected to the connecting rod 63 via a shaft. The upper ends of the connecting rod 63 are rotatably connected to an arc-shaped lifting seat 64 via a shaft. The longitudinal shift seat 66 is slidably connected within the dovetail groove 65 on the inner side of the arc-shaped lifting seat 64. A longitudinal shift assembly 67 is provided between the spindle box 1, the arc-shaped lifting seat 64, and the longitudinal shift seat 66. The longitudinal shift assembly 67 includes a lead screw 671, a rectangular shell 672, a rectangular slide rod 673, and a through-hole. The screw 671 is rotatably connected between the front and rear walls of the spindle box 1 via a bearing 674. A rectangular shell 672 is threaded onto the outer side of the screw 671, and a rectangular slide rod 673 is slidably connected inside the rectangular shell 672. A through groove 674 is provided in the middle of the dovetail groove 65. The upper end of the rectangular slide rod 673 passes through the through groove 674 and is fixedly connected to the outer arc surface of the longitudinal shifting seat 66. The longitudinal shifting assembly 67 also includes a stabilizing rod 675, which is symmetrically arranged between the front and rear walls of the spindle box 1. The outer side of the rectangular shell 672 is slidably connected to the adjacent stabilizing rod 675 through round holes. The stabilizing mechanism 6 also includes an adjusting knob 68, which is respectively located at the right end of the bidirectional screw 61 and the front end of the screw 671, and on the lower side of the slide seat 62. The spindle box 1 has a rubber sealing ring 7 on its upper side, which slides in contact with the bottom wall of the spindle box 1. The operator then rotates the front adjustment knob 68 to rotate the lead screw 671. The lead screw 671, through a threaded connection, drives the rectangular shell 672 to move longitudinally. The rectangular shell 672 slides against the rectangular slide rod 673, causing the upper end of the slide rod 673 to slide along the through groove 674 while simultaneously driving the longitudinal shift seat 66 to move longitudinally along the dovetail groove 65. This, in turn, drives the spindle 5 to move longitudinally, aligning the bearing 4 on the spindle 5 with the embedded groove 3 on the spindle box 1. During this process, the rectangular shell 672 slides longitudinally along the stabilizer rod 675 through a round hole, thus preventing rotation of the rectangular shell 672 during longitudinal movement. To improve the longitudinal stability of the rectangular shell 672, the adjustment knob 68 on the right side is then turned, causing the bidirectional lead screw 61 to rotate. The bidirectional lead screw 61 is threadedly connected, causing both slides 62 to move along the bottom wall of the main shaft box 1 towards the end away from the center of the device. The slides 62 indirectly drive the arc-shaped lifting seat 64 to move vertically downward through the connecting rod 63 (during this process, the upper end of the connecting rod 63 adaptively rotates around the corresponding shaft two, and the lower end of the connecting rod 63 adaptively rotates around the corresponding shaft one). The arc-shaped lifting seat 64 is slidably engaged with the longitudinal moving seat 66 through the dovetail groove 65, thereby driving the longitudinal moving seat 66 to move downward synchronously. The longitudinal moving seat 66 drives the main shaft 5 in its inner arc surface to move downward. After the bearing 4 of the main shaft 5 is vertically aligned with the inner groove 3 through the screw thread transmission,The spindle 5 drives the bearing 4 to move smoothly downwards and engage with the corresponding inner groove 3, preventing hard collisions between the spindle 5 or bearing 4 and the corresponding mounting parts of the spindle housing 1 during installation. Furthermore, the spindle 5 can be easily removed or reinstalled using the stabilizing mechanism 6 for future maintenance. The housing 2 is then secured to the spindle housing 1 with bolts, achieving complete assembly and fixation of the spindle 5. A rubber sealing ring 7 seals the installation gap between the housing 2 and the spindle housing 1. This device, through a transmission element and a threaded screw connection, smoothly installs the spindle 5 into the spindle housing 1, preventing damage that could reduce the assembly accuracy of the spindle 5. This mechanism is also convenient for removing and reinstalling the spindle 5 during future maintenance.

[0021] The working principle of the assembly structure of the machining spindle provided by this utility model is as follows: When assembling the machining spindle, firstly, the spindle housing 1 is installed with screws through the mounting holes. The bearing 4 is then installed with an interference fit to the outside of the spindle 5. The operator places the machining spindle on the inner arc surface of the longitudinal sliding seat 66 (the initial position of the longitudinal sliding seat 66 is above the spindle housing 1). Then, the operator rotates the front adjustment knob 68 to drive the lead screw 671 to rotate. The lead screw 671 drives the rectangular housing 672 to move longitudinally through a threaded connection. The rectangular housing 672 moves longitudinally through itself and the rectangular sliding rod. The sliding engagement of 673 allows the upper end of the rectangular slide rod 673 to slide along the through groove 674, simultaneously driving the longitudinal shift seat 66 to move longitudinally along the dovetail groove 65. This, in turn, drives the main shaft 5 to move longitudinally, aligning the bearing 4 on the main shaft 5 vertically with the inner groove 3 on the main shaft box 1. During this process, the rectangular shell 672 slides longitudinally along the stabilizer rod 675 through the round hole, preventing rotation during longitudinal movement and improving the stability of the rectangular shell 672. Subsequently, rotating the adjustment knob 68 on the right side drives the bidirectional lead screw 61 to rotate. The two-way lead screw 61, through a threaded connection, causes both slides 62 to move along the bottom wall of the main shaft box 1 towards the end furthest from the center of the device. The slides 62 indirectly drive the arc-shaped lifting seat 64 to move vertically downwards via the connecting rod 63 (during this process, the upper ends of the connecting rods 63 adaptively rotate around the corresponding second rotating shaft, and the lower ends of the connecting rods 63 adaptively rotate around the corresponding first rotating shaft). The arc-shaped lifting seat 64 slides and engages with the longitudinal sliding seat 66 via a dovetail groove 65, thereby causing the longitudinal sliding seat 66 to move downwards synchronously. The longitudinal sliding seat 66 then drives the main shaft 5 in its inner arc surface to move downwards, which is achieved through the screw thread transmission... After the bearing 4 of the spindle 5 is vertically aligned with the inner groove 3, the spindle 5 drives the bearing 4 to move down smoothly and be inserted into the corresponding inner groove 3. This avoids hard collisions between the spindle 5 or the bearing 4 and the corresponding installation part of the spindle box 1 during the installation process. In addition, the spindle 5 can be removed or installed by the stabilizing mechanism 6 during maintenance, which is convenient to use. Then, the cover 2 is fixed to the spindle box 1 with bolts, thereby achieving complete assembly and fixation of the spindle 5. The installation gap between the cover 2 and the spindle box 1 is sealed by the rubber sealing ring 7.

[0022] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An assembly structure of a machining spindle, comprising a spindle box (1), the upper side of the spindle box (1) is provided with a box cover (2) through bolt mounting, the front and rear two side walls of the spindle box (1) and the box cover (2) are both provided with an embedded groove (3), the adjacent two embedded grooves (3) are both clamped with a bearing (4), and the bearings (4) are provided with a spindle (5), characterized in that: Also include stable mechanism (6); The stable mechanism (6) comprises a bidirectional screw (61), a sliding seat (62), a connecting rod (63), an arc-shaped lifting seat (64), a dovetail groove (65), a longitudinal moving seat (66) and a longitudinal moving assembly (67), the bidirectional screw (61) is rotatably connected between the left and right walls of the main shaft box (1) through a bearing, the left and right ends of the bidirectional screw (61) are both screw-connected with the sliding seat (62), the front and rear ends of the sliding seat (62) are both rotatably connected with the connecting rod (63) through a rotating shaft, the upper ends of the connecting rod (63) are rotatably connected with the arc-shaped lifting seat (64) through a rotating shaft two, the inner side of the arc-shaped lifting seat (64) is provided with the dovetail groove (65), and the longitudinal moving seat (66) is slidably connected in the dovetail groove (65), and the longitudinal moving assembly (67) is arranged between the main shaft box (1), the arc-shaped lifting seat (64) and the longitudinal moving seat (66).

2. The assembly structure of a machine tool spindle according to claim 1, characterized in that: The longitudinal moving assembly (67) comprises a screw (671), a rectangular shell (672), a rectangular sliding rod (673) and a through groove (674), the screw (671) is rotatably connected between the front and rear walls of the main shaft box (1) through a bearing two, the outer side of the screw (671) is screw-connected with the rectangular shell (672), the inner side of the rectangular shell (672) is slidably connected with the rectangular sliding rod (673), and the middle part of the dovetail groove (65) is provided with the through groove (674), the upper end of the rectangular sliding rod (673) passes through the through groove (674) and is fixedly connected with the outer arc surface of the longitudinal moving seat (66).

3. A machine tool spindle assembly according to claim 2, wherein: The longitudinal moving assembly (67) further comprises a stabilizing rod (675), the stabilizing rod (675) is symmetrically arranged between the front and rear walls of the main shaft box (1), and the outer side of the rectangular shell (672) is slidably connected with the adjacent stabilizing rod (675) through a circular hole.

4. The assembly structure of a machine tool spindle according to claim 2, characterized in that: The stable mechanism (6) further comprises an adjusting knob (68), and the adjusting knob (68) is arranged at the right end of the bidirectional screw (61) and the front end of the screw (671) respectively.

5. The assembly of claim 1, wherein: The lower side of the sliding seat (62) is in sliding contact with the bottom wall of the main shaft box (1).

6. The assembly of claim 1, wherein: The upper side of the main shaft box (1) is provided with a rubber sealing ring (7).

7. The assembly of claim 1, wherein: The lower side of the main shaft box (1) is provided with uniformly distributed mounting holes.

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