Lathe locating device

Abstract

The utility model belongs to the technical field of lathe locating, and particularly relates to a lathe locating device. The locating device comprises a pressing block, one side of the pressing block is slidably connected with a sliding block, one side of the sliding block is provided with a connecting base, the connecting base is rotationally connected with a connecting arm, one end of the connecting arm is rotationally connected with the connecting base, a steel bar is inserted into the other end of the connecting arm, one end of the steel bar is provided with a spring B, and the end, away from the steel bar, of the spring B is provided with an end head. The spring B is located between the steel bar and the end, a contact is installed between the steel bar and the end in a sleeved mode, the spring B is located in the contact, an electric shock hole is formed in the connecting arm, a spring contact pin is inserted in the electric shock hole, and the end of the spring contact pin makes contact with the steel bar. The positioning device solves the problems of low machining precision and low machining efficiency caused by positioning deviation in the turning process of the flange.

Description

Technical Field

[0001] This utility model belongs to the field of lathe positioning technology, and specifically relates to a lathe positioning device. Background Technology

[0002] Currently, in the manufacturing of heavy and light trucks, the key dimensions for turning axle housing brake flanges are the stop diameter and the length from the stop end face to the mounting reference. The two main machining methods are CNC machining and conventional turning. Without an automatic positioning system, both of these methods require tool setting to achieve fixed-length cutting. This involves placing the tool close to the workpiece at a certain machining position on the workpiece surface to obtain the machining reference zero point. The tool turret position is then moved automatically or manually by the equipment to obtain a certain machining length.

[0003] Because there are certain tolerances in the welding process of the bridge housing flange blank and the dimensional chain of the upstream processing, there are positioning deviations in the position of the bridge housing when it is clamped on the equipment. This requires tool setting for each bridge housing or a machining method that involves multiple turning measurements and corrections, resulting in low production efficiency. At the same time, because the reference position of the bridge housing shaft head is a precision-machined surface, during the tool setting process, human error can easily cause the tool to overfeed, damaging the precision-machined surface of the bridge housing shaft head and bringing irreversible quality risks.

[0004] On the other hand, as the precision of vehicle assembly increases, the tolerance of flange machining length also increases. Under these circumstances, ordinary lathes, due to their own structural factors and wear factors, cannot guarantee consistency in ensuring tolerance requirements within ±0.2.

[0005] Taking a conventional lathe as an example, in existing machining processes, the operator needs to find the length reference zero point after tool setting and then move the turret length using the machine's built-in dial. As the equipment ages and gaps develop between structural components, the dial readings become inaccurate. Furthermore, as mentioned above, there is a risk of surface damage during finishing, or the use of small cutting allowances, multiple turning operations, and repeated measurements leads to excessive waste of production time. To improve these problems and enhance production efficiency and machining quality, this utility model proposes a lathe positioning device. Utility Model Content

[0006] This invention proposes a lathe positioning device, which solves the problems of low machining accuracy and low machining efficiency caused by positioning deviation during flange turning.

[0007] The technical solution of this utility model is implemented as follows:

[0008] A lathe positioning device includes a pressure block, a slider slidably connected to one side of the pressure block, a connecting seat mounted on one side of the slider, a connecting arm rotatably connected to the connecting seat, one end of the connecting arm rotatably connected to the connecting seat, a steel rod inserted into the other end of the connecting arm, a spring B mounted on one end of the steel rod, an end cap mounted on the end of the spring B away from the steel rod, the spring B being located between the steel rod and the end cap, a contact being sleeved between the steel rod and the end cap, the spring B being located inside the contact, an electric contact hole being installed inside the connecting arm, a spring contact pin inserted into the electric contact hole, and the end of the spring contact pin contacting the steel rod.

[0009] Optionally, a slide rail is detachably connected to one side of the pressure block by bolts, the slide rail is slidably connected to the slider, and the connecting seat is detachably connected to the side of the slider away from the slide rail by bolts.

[0010] Optionally, a housing is provided between the slider and the connecting seat, the housing encloses the slide rail and the slider, and the edge of the housing is detachably connected to the pressure block by bolts.

[0011] Optionally, the connecting seat has a steel ball hole at its center, and a base is fixedly connected to the side of the connecting seat away from the slider. A threaded post is fixedly connected to the center of the base, and a screw plug hole A is opened at the center of the threaded post. The screw plug hole A is concentric with the steel ball hole. A middle horizontal bar is provided on the side of the outer shell, and two limiting holes are opened on the middle horizontal bar. During the movement of the connecting seat, the steel ball hole is aligned with the two limiting holes respectively.

[0012] Optionally, the connecting seat has a clearance groove on the side facing the slider.

[0013] Optionally, a steel ball is placed in the steel ball hole, a spring A is placed in the screw plug hole A, a shaft hole is opened at one end of the connecting arm near the connecting seat, one end of the spring A is located in the screw plug hole A, the other end of the spring A is located in the shaft hole, a screw plate is provided in the shaft hole, the screw plate is threadedly connected to the threaded column, an adjusting bolt hole is opened at the center of the screw plate, the adjusting bolt hole is concentric with the shaft hole, and a tightening bolt A is provided in the adjusting bolt hole.

[0014] Optionally, the screw pan is in the shape of a stepped shaft, the large end of the screw pan has knurled outer circle, and the small end of the screw pan is threadedly connected to the threaded post.

[0015] Optionally, an insulating sleeve hole is provided at the end of the connecting arm away from the connecting seat, an insulating sleeve is disposed in the insulating sleeve hole, and the steel rod is inserted into the insulating sleeve.

[0016] Optionally, the inner cavity of the connecting arm is equipped with a buzzer, a high-voltage battery, a battery compartment, an LED bead, and a spring contact pin. The contact hole communicates with the insulating sleeve hole. One end of the spring contact pin is inserted into the insulating sleeve hole and is always in contact with the steel rod. The end of the LED bead protrudes from the connecting arm. A bolt hole A is provided on one side of the connecting arm. The bolt hole A communicates with the contact hole. A tightening bolt C is provided in the bolt hole A. The tightening bolt C is used to fix the spring contact pin.

[0017] After adopting the above technical solution, the beneficial effects of this utility model are:

[0018] The lathe positioning device of this invention achieves angle adjustment of the connecting arm by rotating it, enabling the positioning device to be adjusted according to actual operation, which is highly flexible. The sliding of the connecting arm expands the positioning range of the positioning device.

[0019] The lathe positioning device of this utility model can change the original lathe machining process, which involves multiple cutting, multiple measurements, and multiple dimensional adjustments, into a one-time precise positioning, completing the machining within the dimensional tolerance in one go, which can greatly reduce the total machining time of a single piece. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the positioning device in the embodiment;

[0022] Figure 2 This is a cross-sectional structural diagram of the positioning device in the embodiment;

[0023] Figure 3 This is a schematic diagram of the connector structure in the embodiment;

[0024] Figure 4 This is a schematic diagram of the outer shell structure in the embodiment;

[0025] Figure 5 This is a schematic diagram of the connecting arm in the embodiment;

[0026] Figure 6 This is a schematic diagram showing the distribution of internal circuit components in the connecting arm in the embodiment;

[0027] Figure 7 This is a positioning side view of the positioning device in the embodiment;

[0028] Figure 8 This is a top view of the positioning device in the embodiment. Figure I ;

[0029] Figure 9 This is a top view of the positioning device in the embodiment. Figure II .

[0030] Explanation of reference numerals in the attached diagram: 1. End; 2. Contact; 3. Steel rod; 4. Insulating sleeve; 5. Slider; 6. Dust cover; 7. Turning plate; 8. Slide rail; 9. Connecting seat; 10. Threaded post; 11. Pressure block; 12. Outer shell; 13. Middle crossbar; 15. Bolt hole A; 16. Lamp bead hole; 17. Sound transmission hole; 18. Limiting hole; 19. Connecting arm; 21. Spring B; 22. Adjusting bolt hole; 23. Spring A; 24. Steel ball; 31. Lock 32. Tight hole; 33. Contact hole; 44. Inner cavity; 45. Base plate; 46. Plug hole A; 47. Steel ball hole; 58. Clear groove; 59. Shaft hole; 50. Insulating sleeve hole; 51. Bolt hole B; 62. Buzzer; 63. High-volt battery; 64. Battery compartment; 65. LED lamp bead; 66. Spring contact pin; 97. Conductive wire; 98. Turret; 99. Slide table; 90. Positioning device in this utility model; 91. Workpiece; 92. Lathe tool. Detailed Implementation

[0031] 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.

[0032] This application discloses a lathe positioning device.

[0033] Example

[0034] according to Figures 1 to 9As shown, a lathe positioning device includes a pressure block 11, which is made of metal. A slide rail 8 is detachably connected to one side of the pressure block 11 by bolts. A slider 5 is slidably connected to the slide rail 8. A connecting seat 9 is detachably connected to the side of the slider 5 away from the slide rail 8 by bolts. A housing 12 is provided between the slider 5 and the connecting seat 9. The housing 12 covers the slide rail 8 and the slider 5. The edge of the housing 12 is detachably connected to the pressure block 11 by bolts. A ball bearing hole 44 is provided in the center of the connecting seat 9. A clearance groove 45 is provided on the side of the connecting seat 9 facing the slider 5. A base 42 is fixedly connected to the other side of the connecting seat 9. A threaded post 10 is fixedly connected to the center of the base 42. A screw plug hole A43 is provided in the center of the threaded post 10. The screw plug hole A43 is concentric with the ball bearing hole 44. A middle horizontal bar 13 is provided on the side of the housing 12. Two limiting holes 18 are provided in the middle horizontal bar 13. During the movement of the connecting seat 9, the ball bearing hole 44 is aligned with the two limiting holes 18 respectively.

[0035] A steel ball 24 is placed in the ball hole 44 of the connecting seat 9, and a spring A23 is placed in the screw plug hole A43. A connecting arm 19 is provided on one side of the connecting seat 9. One end of the connecting arm 19 has a shaft hole 52, and the other end has an insulating sleeve hole 55. One end of the spring A23 is located in the screw plug hole A43, and the other end of the spring A23 is located in the shaft hole 52. A screw plate 7 is provided in the shaft hole 52. The screw plate 7 is in the shape of a stepped shaft. The large end of the screw plate 7 has knurled outer circle, and the small end of the screw plate 7 is threaded to the threaded post 10, which serves to fix the connecting arm 19. 19 achieves vertical pitch angle changes by releasing the rotating disc 7, but cannot completely eliminate lateral swaying displacement. Connecting arm 19 needs to be pressed against the base 42. The rotating disc 7 has an adjusting bolt hole 22 at its center, concentric with the shaft hole 52. A tightening bolt A is installed in the adjusting bolt hole 22, which pushes the spring A23 to apply pressure to the steel ball 24, thereby adjusting the engagement force between the steel ball 24 and the limiting hole 18. The standard force is that it does not shift in a free state, but can be manually pushed out and enter the limiting hole 18 for positioning. The diameter of the steel ball 24 is 2-3 times the diameter of the limiting hole 18.

[0036] An insulating sleeve 4 is provided in the insulating sleeve hole 55, and a steel rod 3 is inserted into the insulating sleeve 4. A spring B21 is provided at one end of the steel rod 3. An end head 1 is installed at the end of the spring B21 away from the steel rod 3. One end of the spring B21 is fixedly connected to the end of the steel rod 3, and the other end of the spring B21 is fixedly connected to the end of the end head 1. A contact 2 is sleeved between the steel rod 3 and the end head 1. The spring B21 is located inside the contact 2. A locking hole 31 is opened at the end of the connecting arm 19. The locking hole 31 is perpendicular to the insulating sleeve hole 55. A tightening bolt B is provided in the locking hole 31. The tightening bolt B is used to fix the insulating sleeve 4 and hold the steel rod 3 tightly.

[0037] The inner cavity 33 of the connecting arm 19 is equipped with a buzzer 61, a high-voltage battery 62, a battery compartment 63, an LED bead 64, and a spring contact pin 65. The connecting arm 19 has an electric contact hole 32 inside, which is connected to an insulating sleeve hole 55. A spring contact pin 65 is inserted into the electric contact hole 32, with one end of the spring contact pin 65 inserted into the insulating sleeve hole 55 and always in contact with the steel rod 3. The outer shell 12 of the spring contact pin 65 is made of insulating material. The end of the LED bead 64 protrudes from the connecting arm 19. A bolt hole A15 is opened on one side of the connecting arm 19. The bolt hole A15 is perpendicular to the electric contact hole 32 and is connected to the electric contact hole 32. A tightening bolt C is installed in the bolt hole A15. The bolt hole A15 and the tightening bolt C are used to fix the spring contact pin 65.

[0038] The connecting arm 19 has bolt holes B57 on its side. Bolts are used to fit and fix the negative terminal of the circuit. The spring contact pin 65 is a '+' terminal, and bolt hole B57 is a '-' terminal. The buzzer 61, LED beads 64, and high-voltage battery 62 are connected in parallel and connected by conductive wire 66. A dust cover 6 is provided on one side of the connecting arm 19. The dust cover 6 has holes at both ends for assembly with the connecting arm 19. One end of the dust cover 6 has several sound-permeable holes 17, the positions of which correspond to the installation positions of the buzzer 61. The connecting arm 19 has LED bead holes 16 for fixing the LED beads 64, allowing the operator to easily observe whether the LED beads 64 are lit. The insulating sleeve 4 is used to block the electrical circuit between the steel rod 3 and the connecting arm 19. One side of the insulating sleeve 4 is provided with a through hole to ensure that the spring contact pin 65 can conduct electricity with the steel rod 3 through the through hole, and to ensure that the spring contact pin 65 always conducts electricity with the steel rod 3 when the steel rod 3 is extended or retracted.

[0039] The outer casing 12 has the function of preventing iron filings from splashing. The function of the limiting hole 18 is that when the slider 5 moves to the front or rear end, the connecting arm 19 uses the slider 5 as the mounting base. The connecting arm 19 can slide forward or backward along the slider 5 and the slide rail 8. When it is necessary to position the end face of the workpiece, the connecting arm 19 is pushed forward to the front end and the measurement is completed. When processing needs to begin, the connecting arm 19 needs to be retracted to the rear end.

[0040] Under the action of spring A23, steel ball 24 restricts the sliding of slider 5, preventing displacement of slider 5 due to vibration during processing and avoiding mechanical damage. Clear groove 45 is used to contain the middle crossbar 13, which also serves to restrain steel ball 24 from falling out.

[0041] Working principle:

[0042] The pressure block 11 serves as an installation interface for connecting the positioning device 93 of this invention to the tool post of the lathe. The positioning device 93 is installed onto the tool post of the lathe and clamped in place. The relative dimensions of the cutting tool 95 and the end head 1 are adjusted, which corresponds to the length of the flange of the workpiece 94 to be machined. The connecting arm 19 is pushed forward to provide the cutting tool 95 with safe space to move. The machine tool is moved laterally, and the end head 1 is used to gradually approach the reference end face of the workpiece 94 until it touches the surface. At this point, the buzzer 61 sounds, and the LED lights illuminate, indicating that the workpiece has reached the correct position. The connecting arm 19 is retracted, and the lathe's transverse axis remains stationary, only the longitudinal axis is moved, allowing the cutting tool 95 to reach the maximum diameter of the workpiece 94, and machining of the end face begins.

[0043] When end 1 contacts workpiece 94, the circuit forms a loop through workpiece 94, turret 91, and slide 92, triggering the buzzer 61 and LED beads 64 to be powered on, and simultaneously emitting a buzzing sound and a light to indicate that the positioning is in place.

[0044] The lathe positioning device of this invention can determine the qualification of lathe positioning operation with only one measurement. Specifically, when changing the workpiece length, the extension length of the steel bar 3 is first determined according to the actual workpiece. Through repeated trial cuts and adjustments on the first piece, it is confirmed that the extension length of the steel bar 3 fully meets the tolerance requirements of the machining length. In subsequent batch production, when the end 1 just touches the reference end face of the workpiece, the circuit is energized, triggering the buzzer and LED beads to work. When the end 1 does not just touch the reference end face of the workpiece, the circuit is not energized, and the buzzer and LED beads do not work. The operator determines whether the positioning is qualified by checking whether the circuit is connected, whether the buzzer and LED beads are working, and visually inspecting whether the end 1 has made excessive contact with the reference surface of the workpiece.

[0045] This invention is applicable to small-batch production, and especially suitable for large-scale production activities. However, the determination of the length of the first piece still requires calibration and inspection using relevant measuring tools. Based on the inspection readings, the overhang length of end 1 is adjusted to ensure the accuracy of subsequent processing lengths.

[0046] This utility model only shows the installation angle of the horizontally installed connecting arm 19. Its actual usage angle can be adjusted by releasing the screw plate 7 according to the operator's needs. Its ultimate purpose is to meet the operator's needs for easy visual inspection, and it also depends on the shape characteristics of the workpiece 94 being inspected.

[0047] Currently, machining plants still mostly use ordinary lathes or CNC lathes for processing small batches and variety of products such as flanges. The device in this utility model fully takes this into account. Based on the processing requirements of ordinary horizontal lathes, it fully releases processing capacity and improves processing quality with less increase in factory investment.

[0048] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components; they can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0049] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A lathe positioning device, characterized in that: The device includes a pressure block, a slider slidably connected to one side of the pressure block, a connecting seat mounted on one side of the slider, a connecting arm rotatably connected to the connecting seat, one end of the connecting arm rotatably connected to the connecting seat, a steel rod inserted into the other end of the connecting arm, a spring B mounted on one end of the steel rod, an end cap mounted on the end of the spring B away from the steel rod, the spring B located between the steel rod and the end cap, a contact sleeved between the steel rod and the end cap, the spring B located inside the contact, an electric contact hole installed inside the connecting arm, a spring contact pin inserted into the electric contact hole, and the end of the spring contact pin contacting the steel rod.

2. The lathe positioning device according to claim 1, characterized in that: One side of the pressure block is detachably connected to a slide rail by bolts, the slide rail is slidably connected to the slider, and the side of the slider away from the slide rail is detachably connected to the connecting seat by bolts.

3. A lathe positioning device according to claim 2, characterized in that: A housing is provided between the slider and the connecting seat. The housing encloses the slide rail and the slider. The edge of the housing is detachably connected to the pressure block by bolts.

4. A lathe positioning device according to claim 3, characterized in that: The connecting seat has a steel ball hole at its center. A base is fixedly connected to the side of the connecting seat away from the slider. A threaded post is fixedly connected to the center of the base. A screw plug hole A is opened at the center of the threaded post. The screw plug hole A is concentric with the steel ball hole. A middle horizontal bar is provided on the side of the outer shell. The middle horizontal bar has two limiting holes. During the movement of the connecting seat, the steel ball hole is aligned with the two limiting holes respectively.

5. A lathe positioning device according to claim 4, characterized in that: The connecting seat has a clearance groove on the side facing the slider.

6. A lathe positioning device according to claim 4, characterized in that: A steel ball is placed in the ball hole, and a spring A is placed in the plug hole A. A shaft hole is opened at one end of the connecting arm near the connecting seat. One end of the spring A is located in the plug hole A, and the other end of the spring A is located in the shaft hole. A screw plate is provided in the shaft hole, and the screw plate is threadedly connected to the threaded column. An adjusting bolt hole is opened at the center of the screw plate. The adjusting bolt hole is concentric with the shaft hole, and a tightening bolt A is provided in the adjusting bolt hole.

7. A lathe positioning device according to claim 6, characterized in that: The screw plate is in the shape of a stepped shaft, the large end of the screw plate is knurled on the outer circle, and the small end of the screw plate is threadedly connected to the threaded post.

8. A lathe positioning device according to claim 1, characterized in that: An insulating sleeve hole is provided at the end of the connecting arm away from the connecting seat, an insulating sleeve is provided in the insulating sleeve hole, and the steel rod is inserted into the insulating sleeve.

9. A lathe positioning device according to claim 8, characterized in that: The inner cavity of the connecting arm is equipped with a buzzer, a high-voltage battery, a battery compartment, an LED bead, and a spring contact pin. The contact hole is connected to the insulating sleeve hole. One end of the spring contact pin is inserted into the insulating sleeve hole and is always in contact with the steel rod. The end of the LED bead protrudes from the connecting arm. A bolt hole A is provided on one side of the connecting arm. The bolt hole A is connected to the contact hole. A tightening bolt C is provided in the bolt hole A. The tightening bolt C is used to fix the spring contact pin.

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