Auxiliary moving device for tailstock of hard rail structure of lathe

Abstract

The utility model discloses a kind of auxiliary moving device of lathe hard rail structure tailstock, including bed, Z direction guide rail and hard rail are arranged in parallel on bed, slidingly connected with saddle on Z direction guide rail, slidingly connected with tailstock body on hard rail, tailstock body is installed with latch seat, slidingly installed with latch rod in latch seat, handle is vertically installed on the side of latch rod, saddle is provided with insertion hole, the fixed seat structure in traditional device is saved, the overall size of device is reduced, space is occupied extremely small, significantly reduce threshold of additional installation;Limit slot is opened in latch seat, handle is located at limit slot, limit block is arranged in limit slot, the gap between the two ends of limit block and the two side walls of limit slot forms first locking position and second locking position, when latch rod is inserted into the insertion hole of saddle, handle is synchronously clamped into first locking position, form physical hard stop, ensure that latch rod and saddle insertion hole are always in stable connection state during tailstock movement, avoid the risk of being out of stock.

Description

Technical Field

[0001] This utility model relates to the field of lathe technology, specifically to an auxiliary moving device for the tailstock of a lathe with a hard rail structure. Background Technology

[0002] In turning, the tailstock is one of the key functional components of a lathe. It is mainly used to mount centers to support long shaft-type workpieces, or to mount tools such as drills and reamers for hole machining. For lathes equipped with a hardened rail structure, the tailstock usually moves along the axis of the bed by engaging with a hardened guide rail on the bed through a slider or guide rail groove at its bottom.

[0003] Currently, the tailstock movement of most hardened rail lathes is operated entirely manually. The operator uses their own strength to manually push or pull the heavy tailstock body along the guide rail to move it from its current position to the target machining position. Because the tailstock itself is quite heavy and often carries a center or heavy cutting tool, the dragging process is very strenuous, and there is a risk of pinching fingers if operated improperly.

[0004] With the continuous improvement of processing efficiency in modern manufacturing, the aforementioned manual tailstock movement method has become a significant bottleneck restricting the performance improvement and user experience enhancement of hard-rail lathes. Although some high-end CNC lathes or certain models have adopted a solution of directly driving the tailstock screw with a servo motor to achieve automatic movement, this usually involves significant changes to the overall structure of the lathe, requiring additional servo drives, control system integration, and high-precision screw installation space, resulting in high costs. For traditional hard-rail lathes that are still widely used, adding a complete servo drive system is often neither economical nor feasible.

[0005] To address these shortcomings, those skilled in the art have gradually developed an auxiliary moving device, such as the utility model patent "A High-Performance Hardened Rail CNC Machine Tool" with publication number CN221159337U. This device uses a lever handle to rotate a lever block, causing the lever block to engage with the drag support, thereby driving the tailstock to move synchronously via the Z-guide rail. However, this rotating pin design requires relatively large spatial dimensions, and there is no locking limit after the pin rotates, making it prone to accidental situations such as the pin rotating and falling off during use, thus posing a risk of interference.

[0006] For example, the utility model patent with publication number CN203409271U, "A CNC lathe tailstock moving device", has a fixed seat installed on the saddle. The space is relatively large. The pin is inserted into the hole of the fixed seat by a handle. However, since the tailstock is installed on a 45-degree inclined back bed, the pin is not locked after insertion. During use, the pin may slip out of the fixed seat. Utility Model Content

[0007] The purpose of this utility model is to address the shortcomings of the existing technology by providing an auxiliary moving device for the tailstock of a lathe with a hard rail structure, so as to solve the problems mentioned in the background art.

[0008] To achieve this objective, the present invention adopts the following technical solution:

[0009] An auxiliary moving device for a tailstock with a rigid rail structure on a lathe includes a bed, on which a Z-axis guide rail and a rigid rail are arranged parallel to each other. A saddle is slidably connected to the Z-axis guide rail, and a tailstock body is slidably connected to the rigid rail. A pin seat is installed on the tailstock body, and a pin rod is slidably installed in the pin seat. A handle is vertically installed on one side of the pin rod. At least one insertion hole is opened on the saddle corresponding to the position of the pin rod. The pin rod can extend out of the pin seat and be inserted into the insertion hole. A limiting groove is opened on the pin seat, and the handle is located at the limiting groove to limit its movement range. A limiting block is provided in the limiting groove. The gap between the two ends of the limiting block and the two side walls of the limiting groove forms a first locking position and a second locking position. When the handle is engaged in the first locking position, the pin rod is inserted into the insertion hole; when the handle is engaged in the second locking position, the pin rod retracts into the pin seat.

[0010] As a preferred embodiment of the auxiliary moving device for the tailstock of the lathe hardened rail structure, the width of the first locking position and the second locking position is the same as or slightly larger than the width of the handle.

[0011] As a preferred embodiment of the auxiliary moving device for the tailstock of a lathe hardened rail structure, the pin seat includes a base and a protrusion installed in the middle of the base. The base is provided with mounting holes on all four sides, and the tailstock body is provided with connecting holes at the positions corresponding to the mounting holes. The base is fixedly connected to the tailstock body by fasteners passing through the mounting holes and connecting holes in sequence.

[0012] As a preferred embodiment of the auxiliary moving device for the tailstock of a lathe hardened rail structure, the protrusion has a sliding hole along its length, the sliding hole extending to the outer walls of both ends of the protrusion, the pin is installed in the sliding hole, one side of the protrusion is recessed inward to form the limiting groove, the limiting groove is connected to the sliding hole, the limiting block is installed at the opening of the limiting groove, and a gap is left between the limiting block and the two side walls of the limiting groove to facilitate the engagement of the handle.

[0013] As a preferred embodiment of the auxiliary moving device for the tailstock of the lathe hardened rail structure, a threaded hole is provided on one side of the pin rod, a first threaded rod is provided at one end of the handle, the first threaded rod is threadedly connected to the threaded hole, and a second threaded rod is provided at the other end of the handle, the second threaded rod is threadedly connected to a ball-head grip.

[0014] As a preferred embodiment of the auxiliary moving device for the tailstock of the lathe hardened rail structure, the insertion hole is chamfered on the side near the insertion pin.

[0015] As a preferred embodiment of the auxiliary moving device for the tailstock of a lathe with a hardened rail structure, a number of sliders are slidably connected to the Z-guide rail, the sliders are arranged in an array, the saddle is mounted on the sliders, the saddle is connected to a first lead screw, and the first lead screw is connected to a first servo motor.

[0016] As a preferred embodiment of the auxiliary moving device for the tailstock of a lathe with a hardened rail structure, an X-axis guide rail is mounted on the saddle, a slide body is slidably connected to the X-axis guide rail, the slide body is connected to a second lead screw, and the second lead screw is connected to a second servo motor.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) This utility model directly processes the insertion hole on the saddle, eliminating the need for the fixed seat structure that is independently welded or bolted in the traditional device. The overall size of the device is reduced, the space occupied is minimal, and the installation threshold is significantly lowered. It can effectively avoid interference with other parts of the lathe, and is especially suitable for the renovation of old lathes with limited space.

[0019] (2) The present invention adds a first locking position and a second locking position to the pin seat. When the pin rod is inserted into the saddle hole, the handle is simultaneously locked into the first locking position to form a physical hard stop. At this time, the handle cannot move, ensuring that the pin rod and the saddle hole are always in a stable connection state during the movement of the tailstock, thereby avoiding the risk of pin detachment. When the pin rod is retracted into the pin seat, the handle is simultaneously locked into the second locking position. At this time, the handle also cannot move, thereby avoiding interference between the pin rod and other parts of the lathe during the use of the tailstock. Attached Figure Description

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

[0021] Figure 1 This is a schematic diagram of the overall structure of the auxiliary moving device for the tailstock of the lathe hard rail structure described in this utility model.

[0022] Figure 2 This is a schematic diagram showing the disassembled structure of the saddle, tailstock body, and pin seat described in this utility model.

[0023] Figure 3This is a schematic diagram of the combined structure of the pin seat and the pin rod described in this utility model.

[0024] Figure 4 This is a schematic diagram showing the disassembled structure of the pin holder and pin rod described in this utility model.

[0025] Figure 5 This is a schematic diagram of the planar structure of the pin holder described in this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Bed; 2. Z-axis guide rail; 3. Hard rail; 4. Saddle; 5. Tailstock body; 6. Pin seat; 61. Limiting groove; 62. Limiting block; 63. First locking position; 64. Second locking position; 65. Base; 66. Protrusion; 67. Mounting hole; 68. Sliding hole; 7. Pin rod; 8. Handle; 81. First threaded rod; 82. Second threaded rod; 9. Insertion hole; 10. Connecting hole; 11. Threaded hole; 12. Ball joint handle; 13. Slider; 14. First lead screw; 15. First servo motor; 16. X-axis guide rail; 17. Slider; 18. Second lead screw; 19. Second servo motor. Detailed Implementation

[0028] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0030] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they 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. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it 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 utility model based on the specific circumstances.

[0032] like Figure 1 As shown, this utility model provides an auxiliary moving device for a tailstock of a lathe with a rigid rail structure. It includes a bed 1, on which a Z-axis guide rail 2 and a rigid rail 3 are arranged in parallel. A saddle 4 is slidably connected to the Z-axis guide rail 2, and a Z-axis drive device is connected to the saddle 4. The Z-axis drive device can drive the saddle 4 to move along the Z-axis guide rail 2. A tailstock body 5 is slidably connected to the rigid rail 3. A pin seat 6 is installed on the tailstock body 5, and a pin rod 7 is slidably installed inside the pin seat 6. A handle 8 is vertically installed on one side of the pin rod 7, which can drive the pin rod 7 to move. At least one insertion hole 9 is provided on the saddle 4 corresponding to the position of the pin rod 7. The pin rod 7 can extend out of the pin seat 6 and insert into the insertion hole 9, thereby connecting the tailstock body 5 and the saddle 4. When the Z-axis drive device drives the saddle 4 to move, the tailstock body 5 can move synchronously with the saddle 4, eliminating the need for manual pushing of the tailstock body 5 and improving the position adjustment efficiency of the tailstock body 5.

[0033] To prevent the pin 7 from falling out of the socket 9, a limiting groove 61 is provided on the pin seat 6, and the handle 8 is located at the limiting groove 61. The handle 8 can only move within the range of the limiting groove 61, thereby indirectly limiting the movement distance of the pin 7. At the same time, a limiting block 62 is also provided in the limiting groove 61. The gap between the two ends of the limiting block 62 and the two side walls of the limiting groove 61 forms a first locking position 63 and a second locking position 64. The width of the first locking position 63 and the second locking position 64 is the same as or slightly larger than the width of the handle 8, so that the handle 8 can be locked into the first locking position 63 or the second locking position 64.

[0034] When the handle 8 moves to one end of the limiting groove 61, the pin 7 is inserted into the socket 9 of the saddle 4. At this time, the handle 8 is simultaneously locked into the first locking position 63, forming a physical hard stop, which prevents the handle 8 from moving. This ensures that the pin 7 and the socket 9 are always stably connected when the tailstock body 5 moves with the saddle 4, effectively avoiding the risk of disengagement. When the handle 8 moves to the other end of the limiting groove 61, the pin 7 is just retracted into the pin seat 6. At this time, when the handle 8 is simultaneously locked into the second locking position 64, a physical hard stop is also formed, preventing the handle 8 from moving. This avoids the pin 7 interfering with other parts of the lathe during the use of the tailstock body 5.

[0035] In this embodiment, the insertion hole 9 is directly machined on the saddle 4, eliminating the need for the fixed seat structure that is independently welded or bolted in the traditional device. The overall size of the device is reduced, the space occupied is minimal, and the installation threshold is significantly lowered. It can effectively avoid interference with other parts of the lathe, and is especially suitable for the renovation of old lathes with limited space.

[0036] Preferably, in this embodiment, there are two insertion holes 9 on the saddle 4. The two insertion holes 9 are distributed at intervals along the horizontal direction of the saddle 4. The operator can select the corresponding insertion hole 9 according to the required position of the tailstock body 5. The side of the insertion hole 9 near the pin rod 7 is provided with a chamfer. The chamfer forms a guide slope, making it easier to insert the pin rod 7 into the hole and avoiding edge scratches on the mating parts or assembly difficulties.

[0037] like Figure 3 and Figure 5 As shown, the pin holder 6 specifically includes a base 65 and a protrusion 66 installed in the middle of the base 65. The base 65 and the protrusion 66 form a T-shaped structure. Mounting holes 67 are provided around the base 65, and connecting holes 10 are provided on the tailstock body 5 corresponding to the mounting holes 67. During installation, the base 65 and tailstock body 5 can be connected simply by passing fasteners through the mounting holes 67 and connecting holes 10 in sequence, making installation easy. A sliding hole 68 is provided along the length of the protrusion 66, extending through the outer walls of both ends of the protrusion 66. The pin 7 is installed in the sliding hole 68. A lateral indentation forms a limiting groove 61, which communicates with the sliding hole 68. A limiting block 62 is installed at the opening of the limiting groove 61 and leaves a gap between it and the two side walls of the limiting groove 61. The gaps at both ends form a first locking position 63 and a second locking position 64, which facilitates the engagement of the handle 8. When the operator drives the pin rod 7 into the insertion hole 9 by using the handle 8, he only needs to turn the handle 8 downward to engage the handle 8 in the first locking position 63. Similarly, when the operator drives the pin rod 7 back to the pin seat 6 by using the handle 8, he only needs to turn the handle 8 downward to engage the handle 8 in the second locking position 64.

[0038] like Figure 4 As shown, a threaded hole 11 is provided on one side of the pin 7, and a first threaded rod 81 is provided at one end of the handle 8. The first threaded rod 81 is threadedly connected to the threaded hole 11, thereby fixing the handle 8 to the pin 7. At the same time, a second threaded rod 82 is provided at the other end of the handle 8. The second threaded rod 82 is threadedly connected to a ball-head handle 12, and the operator can control the movement of the handle 8 through the ball-head handle 12.

[0039] like Figure 2As shown, several sliders 13 are slidably connected to the Z-guide rail 2. The sliders 13 are arranged in an array. The saddle 4 is mounted on the sliders 13, so that the saddle 4 can slide along the Z-guide rail 2. The Z-axis drive device specifically includes a first lead screw 14 and a first servo motor 15. The first servo motor 15 is connected to the first lead screw 14, and the first lead screw 14 is connected to the saddle 4. When the first servo motor 15 is started, the first servo motor 15 will drive the saddle 4 to move along the Z-axis through the first lead screw 14.

[0040] Meanwhile, an X-axis guide rail 16 is installed on the saddle 4, and a slide body 17 is slidably connected to the X-axis guide rail 16. Tool holders and other components can be installed on the slide body 17. The slide body 17 is also connected to an X-axis drive device, which specifically includes a second lead screw 18 and a second servo motor 19. The second servo motor 19 is connected to the second lead screw 18, and the second lead screw 18 is connected to the slide body 17. When the second servo motor 19 is started, the second servo motor 19 will drive the slide body 17 and the components on the slide body 17 to move along the X-axis through the second lead screw 18.

[0041] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to this utility model. However, such variations, as long as they do not depart from the spirit of this utility model, should be within the protection scope of this utility model. Furthermore, some terminology used in this application specification and claims is not limiting, but merely for ease of description.

Claims

1. An auxiliary moving device for a tailstock of a lathe with a rigid rail structure, characterized in that, The bed includes a bed frame (1), on which a Z-axis guide rail (2) and a rigid rail (3) are arranged in parallel. A saddle (4) is slidably connected to the Z-axis guide rail (2), and a tailstock body (5) is slidably connected to the rigid rail (3). A pin seat (6) is installed on the tailstock body (5), and a pin rod (7) is slidably installed in the pin seat (6). A handle (8) is vertically installed on one side of the pin rod (7). The saddle (4) has at least one insertion hole (9), and the pin rod (7) can extend out of the pin seat (6) and be inserted into the insertion hole (9). A limiting groove (61) is provided on the pin seat (6). The handle (8) is located in the limiting groove (61). A limiting block (62) is provided in the limiting groove (61). The gap between the two ends of the limiting block (62) and the two side walls of the limiting groove (61) forms a first locking position (63) and a second locking position (64). When the handle (8) is engaged in the first locking position (63), the pin rod (7) is inserted into the insertion hole (9). When the handle (8) is engaged in the second locking position (64), the pin rod (7) is retracted into the pin seat (6).

2. The auxiliary moving device for the tailstock of the lathe hardened rail structure according to claim 1, characterized in that, The width of the first locking position (63) and the second locking position (64) is the same as or slightly larger than the width of the handle (8).

3. The auxiliary moving device for the tailstock of the lathe hardened rail structure according to claim 1, characterized in that, The pin seat (6) includes a base (65) and a protrusion (66) installed in the middle of the base (65). The base (65) is provided with mounting holes (67) around its perimeter. The tailstock body (5) is provided with connecting holes (10) corresponding to the mounting holes (67). The base (65) is fixedly connected to the tailstock body (5) by fasteners passing through the mounting holes (67) and connecting holes (10) in sequence.

4. The auxiliary moving device for the tailstock of the lathe hardened rail structure according to claim 3, characterized in that, The protrusion (66) has a sliding hole (68) along its length. The sliding hole (68) extends to the outer walls of both ends of the protrusion (66). The pin (7) is installed in the sliding hole (68). One side of the protrusion (66) is recessed inward to form the limiting groove (61). The limiting groove (61) communicates with the sliding hole (68). The limiting block (62) is installed at the opening of the limiting groove (61) and leaves a gap between it and the two side walls of the limiting groove (61) so that the handle (8) can be engaged.

5. The auxiliary moving device for the tailstock of the lathe hardened rail structure according to claim 1, characterized in that, The pin (7) has a threaded hole (11) on one side, and the handle (8) has a first threaded rod (81) at one end, which is threaded to the threaded hole (11). The handle (8) has a second threaded rod (82) at the other end, which is threaded to a ball-head grip (12).

6. The auxiliary moving device for the tailstock of the lathe hardened rail structure according to claim 1, characterized in that, The insertion hole (9) has a chamfer on the side near the pin (7).

7. The auxiliary moving device for the tailstock of the lathe hardened rail structure according to claim 1, characterized in that, A plurality of sliders (13) are slidably connected on the Z-guide rail (2), the sliders (13) are arranged in an array, the saddle (4) is mounted on the sliders (13), the saddle (4) is connected to a first lead screw (14), and the first lead screw (14) is connected to a first servo motor (15).

8. The auxiliary moving device for the tailstock of the lathe hardened rail structure according to claim 7, characterized in that, An X-axis guide rail (16) is installed on the saddle (4), and a slide body (17) is slidably connected to the X-axis guide rail (16). The slide body (17) is connected to a second lead screw (18), and the second lead screw (18) is connected to a second servo motor (19).

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