Horizontal lathe with high machining precision

Abstract

The utility model relates to the technical field of lathes, in particular to a horizontal lathe with high machining precision, and aims to solve the technical problem that when a horizontal lathe in the prior art is used for machining a large-diameter pipe fitting, a tip cannot play a role in auxiliary positioning, so that key radial run-out is too large. The rollers are rotatably connected to the interiors of the corresponding sliding blocks, the sliding blocks are slidably connected to sliding grooves of the fixed disc, the fixed disc is connected with the disc support, the disc support is connected with the sleeve, the sleeve is connected to the interior of the fixed support, the fixed support is connected to the sliding base, and the driving mechanism can drive the multiple sliding blocks to synchronously slide in the sliding grooves at the same speed. The driving mechanism is connected to the sliding base, one end of the pipe fitting is fixed through the chuck, the inner wall of the other end of the pipe fitting is supported and clamped through the multiple rolling wheels evenly distributed in the circumferential direction, and it is guaranteed that errors caused by radial run-out of the pipe fitting in the turning process are avoided, and precision reduction is avoided.

Description

Technical Field

[0001] This utility model relates to the field of lathe technology, specifically to a horizontal lathe with high machining precision. Background Technology

[0002] Horizontal lathes are among the most common and important machining equipment in the field of mechanical processing, widely used in numerous industries such as automobile manufacturing, aerospace, shipbuilding, and precision instrument manufacturing. They rotate the workpiece via a spindle, and the cutting tool, driven by the feed system, performs cutting operations on the workpiece, enabling the machining of various surfaces such as external diameters, internal holes, threads, and end faces. With the continuous development of industrial technology, the requirements for the machining accuracy of mechanical parts are becoming increasingly stringent, and horizontal lathes are constantly evolving towards higher precision, higher efficiency, and automation.

[0003] The rotary center is an auxiliary positioning mechanism on a lathe. It contains rolling bearings that allow the center head to rotate relative to the center body. During operation, the center head rotates with the workpiece, reducing friction and heat generation.

[0004] When machining large-diameter pipes, the center of the existing horizontal lathe cannot play an auxiliary positioning role, resulting in excessive radial runout and affecting machining accuracy. Utility Model Content

[0005] This invention addresses the technical problem of excessive radial runout in critical sections of existing horizontal lathes when machining large-diameter pipes, where the center point cannot provide auxiliary positioning. The invention provides a horizontal lathe with high machining accuracy.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a horizontal lathe with high machining precision, comprising: a frame, a slide rail and a power motor connected on the frame, the output shaft of the power motor connected to a chuck, the chuck being rotatably connected inside the frame, a lockable slide block slidably connected on the slide rail, one end of a tube being held in the chuck, the other inner wall of the tube being provided with multiple circumferentially distributed rollers, each roller being rotatably connected to the interior of a corresponding slider, the slider being slidably connected to a groove in a fixed disc, the fixed disc being connected to a disc bracket, the disc bracket being connected to a sleeve, the sleeve being connected inside a fixed bracket, the fixed bracket being connected to the slide block, and a drive mechanism capable of driving multiple sliders to slide synchronously and at the same speed in the groove, the drive mechanism being connected to the slide block.

[0007] Preferably, the drive mechanism includes a star-shaped cam, each corner of which contacts a slider. The star-shaped cam is connected to an input shaft, which is rotatably connected inside a sleeve. The slider is connected to a spring-limiting rod, which is slidably connected inside a perforated plate. The perforated plate is connected to a fixed disc. A spring is sleeved on the spring-limiting rod between the perforated plate and the slider. The spring is in a compressed state. The input shaft is connected to a self-locking power source, which is connected to a slide block.

[0008] Preferably, the self-locking power unit includes a worm gear, a worm, and a bearing housing. The worm gear is connected to the input shaft, the worm gear is meshed with the worm, the worm is rotatably connected in the bearing housing, and the bearing housing is connected to the slide.

[0009] Preferably, the contact surface between the slider and the star-shaped cam is a curved surface.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] One end of the pipe is fixed by a chuck, while the inner wall of the other end is supported and clamped by multiple circumferentially distributed rollers. This ensures that the pipe will not have errors due to radial runout during the turning process, which would reduce its accuracy. The drive mechanism controls the synchronous and same-speed displacement of multiple rollers, which can stably support pipes of any diameter within the clamping range of the chuck.

[0012] Stepless adjustment is achieved by using a self-locking star-shaped cam in conjunction with a slider. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0014] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0015] Figure 3 This is an exploded view of the structure of this utility model.

[0016] In the diagram: 1. Frame; 2. Slide rail; 3. Power motor; 4. Chuck; 5. Pipe fitting; 6. Slide block; 7. Roller; 8. Slider; 9. Fixed disc; 10. Slide groove; 11. Drive mechanism; 11. Star cam; 111. Input shaft; 112. Spring limit rod; 113. Orifice plate; 114. Spring; 115. Worm gear; 116. Worm; 117. Bearing seat; 118. Disc support; 12. Sleeve; 13. Fixed support; 14. Detailed Implementation

[0017] 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.

[0018] The rotary connection described in this device refers to the axial fixation of the bearing by mounting the bearing on the shaft, with a spring retaining ring groove provided on the shaft or shaft hole, and the rotation achieved by locking the elastic retaining ring in the retaining ring groove; the hinge connection refers to the connection method that allows movement through connecting parts such as hinges, pins, and short shafts.

[0019] The present invention will now be described in detail with reference to the accompanying drawings.

[0020] The following is in conjunction with the appendix Figures 1-3 This embodiment describes a horizontal lathe with high machining accuracy, comprising: a frame 1, on which a slide rail 2 and a power motor 3 are connected, the output shaft of the power motor 3 is connected to a chuck 4, the chuck 4 is rotatably connected inside the frame 1, a lockable slide block 6 is slidably connected to the slide rail 2, one end of a tube 5 is held in the chuck 4, the other inner wall of the tube 5 is provided by multiple circumferentially distributed rollers 7, each roller 7 is rotatably connected inside a corresponding slider 8, the slider 8 is slidably connected in a groove 10 of a fixed disc 9, the fixed disc 9 is connected to a disc support 12, the disc support 12 is connected to a sleeve 13, the sleeve 13 is connected inside a fixed support 14, the fixed support 14 is connected to the slide block 6, and a drive mechanism 11 is capable of driving multiple sliders 8 to slide synchronously and at the same speed in the groove 10, the drive mechanism 11 is connected to the slide block 6.

[0021] One end of the pipe fitting 5 is fixed by the chuck 4, and the inner wall of the other end is supported and clamped by multiple circumferentially distributed rollers 7. The drive mechanism 11 controls multiple sliders 8 to slide synchronously and at the same speed in the slide groove 10, which drives the rollers 7 to move synchronously and at the same speed. This can stably support pipe fittings 5 ​​of any diameter within the clamping range of the chuck 4. The power motor 3 drives the chuck 4 to rotate, the chuck 4 drives the pipe fitting 5 to rotate, and the pipe fitting 5 drives the rollers 7 to rotate. The rollers 7 support the pipe fitting without affecting its operation. At this time, the pipe fitting 5 can be machined by a cutting tool, ensuring that the pipe fitting 5 will not have errors due to radial runout during the turning process, which would reduce its accuracy.

[0022] The drive mechanism 11 includes a star cam 111, each corner of which is in contact with a slider 8. The star cam 111 is connected to the input shaft 112, which is rotatably connected inside the sleeve 13. The slider 8 is connected to the spring limiting rod 113, which is slidably connected inside the perforated plate 114. The perforated plate 114 is connected to the fixed disc 9. A spring 115 is sleeved on the spring limiting rod 113 between the perforated plate 114 and the slider 8. The spring 115 is in a compressed state. The input shaft 112 is connected to the self-locking power source, which is connected to the slide block 6.

[0023] The self-locking power drive input shaft 112 rotates, which in turn drives the star cam 111 to rotate. The star cam 111 drives the slider 8 to slide along the slide groove 10 via the inclined plane for adjustment. After adjustment, the self-locking power locks and completes the positioning of the roller 7. When the star cam 111 resets, the slider 8 resets under the action of the spring 115, thus completing the release of the pipe fitting 5.

[0024] The self-locking power unit includes a worm gear 116, a worm 117, and a bearing housing 118. The worm gear 116 is connected to the input shaft 112 and meshes with the worm 117. The worm 117 is rotatably connected to the bearing housing 118, and the bearing housing 118 is connected to the slide 6.

[0025] The power is input from the worm gear 117, which drives the worm wheel 116 to rotate. The worm wheel 116 drives the input shaft 112 to rotate. Since the worm gear has a self-locking function, the roller 7 is locked.

[0026] The contact surface between slider 8 and star cam 111 is curved.

[0027] The curved slider 8 avoids damaging the star-shaped cam 111, which would affect accuracy.

[0028] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A horizontal lathe with high machining accuracy, comprising: The frame (1) is connected to a slide rail (2) and a power motor (3). The output shaft of the power motor (3) is connected to a chuck (4). The chuck (4) is rotatably connected inside the frame (1). A lockable slide block (6) is slidably connected to the slide rail (2). The features are as follows: one end of the tube (5) is held in the chuck (4), and the other inner wall of the tube (5) is made of multiple circumferentially distributed rollers (7). Each roller (7) is rotatably connected to the inside of the corresponding slider (8). The slider (8) is slidably connected to the groove (10) of the fixed disc (9). The fixed disc (9) is connected to the disc support (12). The disc support (12) is connected to the sleeve (13). The sleeve (13) is connected to the fixed support (14). The fixed support (14) is connected to the slide (6). The driving mechanism (11) can drive multiple sliders (8) to slide synchronously and at the same speed in the groove (10). The driving mechanism (11) is connected to the slide (6).

2. The horizontal lathe with high machining accuracy according to claim 1, characterized in that: The drive mechanism (11) includes a star cam (111), each corner of which is in contact with a slider (8). The star cam (111) is connected to the input shaft (112), which is rotatably connected to the inside of the sleeve (13). The slider (8) is connected to the spring limit rod (113), which is slidably connected to the perforated plate (114). The perforated plate (114) is connected to the fixed disc (9). A spring (115) is sleeved on the spring limit rod (113) between the perforated plate (114) and the slider (8). The spring (115) is in a compressed state. The input shaft (112) is connected to the self-locking power, which is connected to the slide block (6).

3. The horizontal lathe with high machining accuracy according to claim 2, characterized in that: The self-locking power includes a worm wheel (116), a worm (117), and a bearing seat (118). The worm wheel (116) is connected to the input shaft (112), and the worm wheel (116) is meshed with the worm (117). The worm (117) is rotatably connected in the bearing seat (118), and the bearing seat (118) is connected to the slide (6).

4. A horizontal lathe with high machining accuracy according to claim 2, characterized in that: The contact surface between the slider (8) and the star-shaped cam (111) is a curved surface.

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