Center-adjustable servo tailstock

Abstract

The invention provides a center-adjustable servo tailstock, and relates to the technical field of servo tails.The center-adjustable servo tailstock comprises a machining pedestal, a guide rail and a translation sliding table, two limiting rods are arranged in the middle of the top end of the translation sliding table, an adjustable mechanism used for adjusting the center position of a center is arranged between the two limiting rods, and the adjustable mechanism comprises a positioning seat located at the top end of the translation sliding table; a horizontal adjusting groove is formed in one end of the positioning seat, a horizontal positioning block is arranged at the top end of the positioning seat, an up-down adjusting groove is formed in one side of the top end of the horizontal positioning block, and adjusting handles used for adjusting the position of the tip are arranged in inner cavities of the horizontal adjusting groove and the up-down adjusting groove. The adjusting handle moves in the inner cavities of the horizontal adjusting groove, the vertical adjusting groove, the first clamping groove and the second clamping groove, so that under the condition that a servo tailstock in the device is fixed, the vertical and horizontal positions of the center body are adjusted, and the centering precision of the center and a workpiece and the machining precision of the workpiece are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of servo tailstocks, and particularly to a servo tailstock with adjustable center. Background Art

[0002] A servo tailstock is a precision device used in numerical control machine tools (such as CNC lathes). It is a tailstock mechanism that tightens the center of the workpiece through a center drill, combining servo motor drive technology with the function of the tailstock. It is mainly used for the support, positioning, and auxiliary processing of workpieces. Its core feature is to achieve high-precision and high-response position and pressure control through the servo system, thereby improving machining accuracy and efficiency. The high-precision positioning and clamping function of the servo tailstock can ensure the stability and consistency of product quality, and avoid quality problems caused by machining errors. It is widely used in precision shaft parts, long shaft parts, and automated production lines. Deficiencies in the prior art: After the existing servo tailstock is installed, the position of the center drill is usually fixed. When the device processes the workpiece, the workpiece will vibrate, resulting in a deviation in the center position of the workpiece. However, after the existing servo tailstock is fixedly installed, it is impossible to adjust the center position of the center drill according to the deviation of the workpiece center position, which easily affects the accuracy of the center alignment between the center drill and the workpiece center and the machining accuracy of the workpiece, and has low applicability. Summary of the Invention

[0003] The problem to be solved by the present invention is that after the existing servo tailstock is fixedly installed, it is impossible to adjust the center position of the center drill according to the deviation generated by the device, which easily affects the accuracy of the center alignment between the center drill and the workpiece center and the machining accuracy of the workpiece.

[0004] To solve the above technical problems, the present invention provides a servo tailstock with adjustable center, including a machining pedestal and a guide rail installed on its top. A translation slide for the movement of the center drill is arranged on the outer surface of the guide rail. Two limit rods are arranged in the middle of the top of the translation slide, and an adjustable mechanism for adjusting the center position of the center drill is arranged between the two limit rods; The adjustable mechanism includes a positioning seat located on the top of the translation slide. A horizontal adjustment groove is opened at one end of the positioning seat. A horizontal positioning block is arranged on the top of the positioning seat. An up-down adjustment groove is opened on one side of the top of the horizontal positioning block. Adjustment handles for adjusting the position of the center drill are arranged in the inner cavities of the horizontal adjustment groove and the up-down adjustment groove.

[0005] Preferably, a tip positioning block is installed at one end of the horizontal positioning block away from the positioning seat. A first clamping groove is formed at one end of the inner wall of the horizontal positioning block close to the horizontal adjustment groove. A first guiding groove is formed at the bottom end of the horizontal positioning block. A second clamping groove is formed in the middle of one end of the tip positioning block close to the up-and-down adjustment groove. Second guiding grooves are formed on both sides of one end of the tip positioning block close to the up-and-down adjustment groove. Connecting grooves are fixedly communicated with the inner cavities of the horizontal adjustment groove and the up-and-down adjustment groove respectively.

[0006] Preferably, the first clamping groove corresponds to and communicates with the inner cavity of the horizontal adjustment groove, and the second clamping groove corresponds to and communicates with the inner cavity of the up-and-down adjustment groove. One of the adjustment handles and the connecting groove are horizontally arranged, and the other adjustment handle and the connecting groove are vertically arranged.

[0007] Preferably, the adjustment handle includes a threaded rod threadedly connected to the inner cavity of the connecting groove. One end of the threaded rod is fixedly connected with a clamping block, and one end of the clamping block away from the threaded rod is fixedly connected with a handle rod.

[0008] Preferably, one ends of the two clamping blocks are respectively movably connected to the inner cavities of the horizontal adjustment groove and the up-and-down adjustment groove, and the other ends of the two clamping blocks are respectively movably connected to the inner cavities of the first clamping groove and the second clamping groove.

[0009] Preferably, a first guiding block is fixedly connected to one side of the top end of the positioning seat. Two second guiding blocks are fixedly connected to one end of the horizontal positioning block close to the tip positioning block. The first guiding block corresponds to and is movably connected to the inner cavity of the first guiding groove, and the second guiding block corresponds to and is movably connected to the inner cavity of the second guiding groove.

[0010] Preferably, an installation groove is formed on one side of the top end of the tip positioning block. A fixing block is installed in the inner cavity of the installation groove, and a tip body is installed on the fixing block.

[0011] Preferably, a plurality of first installation holes are formed in the top end of the positioning seat, and a plurality of second installation holes are formed in the top end of the translation sliding table. The positioning seat is movably connected between two limiting rods, and the first installation holes and the second installation holes correspond to each other and are connected and communicated.

[0012] Preferably, a servo motor is fixedly installed at one end of the processing table seat. A lead screw is arranged in the inner cavity of the guide rail. Two sliding sleeves are fixedly connected to the bottom end of the translation sliding table. The output end of the servo motor is fixedly connected with a coupling, and the servo motor is in transmission connection with the lead screw through the coupling. The two sliding sleeves are both threadedly connected to the outer surface of the lead screw.

[0013] The technical effects and advantages of the present invention: 1. The present invention realizes the adjustment of the center point by providing an adjustable mechanism. By rotating the handle rod, the threaded rod rotates within the inner cavity of the connection groove, driving the clamping block to move within the inner cavities of the first clamping groove and the second clamping groove. Through the movement of the clamping block within the horizontal adjustment groove and the inner cavity of the first clamping groove, the horizontal position adjustment of the horizontal positioning block is realized. Through the movement of the clamping block within the vertical adjustment groove and the inner cavity of the second clamping groove, the vertical position adjustment of the center point positioning block is realized. When the vibration generated during the operation of the device causes the center position of the center point to shift, the position of the center point body can be directly adjusted up, down, left, and right by adjusting the handle, enabling the adjustment of the center position of the center point even when the headstock in the device is already fixed, ensuring the accuracy of the alignment between the center point and the workpiece and the machining accuracy of the workpiece.

[0014] 2. The present invention fixes the position of the adjustable mechanism by providing a plurality of mounting holes. After the position adjustment of the horizontal positioning block and the center point positioning block is completed, fasteners such as connecting bolts are respectively inserted into the inner cavities of the second mounting hole and the third mounting hole, enabling the horizontal positioning block, the center point positioning block, and the positioning seat to be firmly connected together, ensuring the stability and firmness after the adjustment and calibration of the centering position of the center point body. At the same time, through the first mounting hole and the mounting hole at the top of the translation slide, the entire adjustable mechanism is fixed at the top of the translation slide, ensuring the machining accuracy of the device.

[0015] 3. During the movement of the horizontal positioning block, it slides on the surface of the first guiding block through the first guiding groove opened at the bottom end. During the movement of the center point positioning block, it slides on the surface of the second guiding block through the second guiding groove opened at one end, ensuring the accuracy of the movement process of the horizontal positioning block and the center point positioning block, avoiding the deviation of the direction when the horizontal positioning block and the center point positioning block move without being fixed, effectively increasing the accuracy of the center point position adjustment. At the same time, the overall position of the adjustable mechanism is adjusted through the two limiting rods connected to the top of the translation slide, ensuring that the entire adjustable mechanism always remains at the center position of the top of the translation slide. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic cross-sectional view of the overall structure of the present invention.

[0017] Figure 2 is a schematic structural view of the adjustable mechanism of the present invention.

[0018] Figure 3 is a schematic cross-sectional structure diagram of the adjustable mechanism of the present invention Figure 1 .

[0019] Figure 4 is a schematic cross-sectional structure diagram of the adjustable mechanism of the present invention Figure 2 .

[0020] Figure 5 is a schematic cross-sectional structure diagram of the adjustable mechanism of the present invention Figure 3 .

[0021] Figure 6 This is a schematic top view of the overall structure of the present invention.

[0022] The reference numerals are: 1, processing pedestal; 2, guide rail; 3, translation slide; 4, limit rod; 5, adjustable mechanism; 51, positioning seat; 52, horizontal adjustment groove; 53, horizontal positioning block; 54, up-and-down adjustment groove; 55, adjustment handle; 551, threaded rod; 552, clamping block; 553, handle rod; 56, top positioning block; 57, first card slot; 58, first guide groove; 59, second card slot; 510, second guide groove; 511, connecting groove; 512, first guide block; 513, second guide block; 514, installation groove; 515, fixed block; 516, top body; 517, first installation hole; 6, second installation hole; 7, servo motor; 8, lead screw; 9, sliding sleeve; 10, coupling. Detailed implementation manners

[0023] The present invention provides a center-adjustable servo tailstock, as Figure 1 - Figure 6 shown, which includes a processing pedestal 1 and a guide rail 2 installed at the top thereof. A translation slide 3 for the movement of the center point is arranged on the outer surface of the guide rail 2. Two limit rods 4 are arranged in the middle of the top end of the translation slide 3, and an adjustable mechanism 5 for adjusting the center position of the center point is arranged between the two limit rods 4.

[0024] Furthermore, as Figure 1 and Figure 2 shown, the adjustable mechanism 5 includes a positioning seat 51 located at the top end of the translation slide 3. A horizontal adjustment groove 52 is opened at one end of the positioning seat 51. A horizontal positioning block 53 is arranged at the top end of the positioning seat 51. An up-and-down adjustment groove 54 is opened at one side of the top end of the horizontal positioning block 53. Adjustment handles 55 for adjusting the position of the center point are arranged in the inner cavities of the horizontal adjustment groove 52 and the up-and-down adjustment groove 54.

[0025] Furthermore, as Figure 2 、 Figure 3 and Figure 4 shown, a top positioning block 56 is installed at the end of the horizontal positioning block 53 far away from the positioning seat 51. A first card slot 57 is opened at one end of the inner wall of the horizontal positioning block 53 close to the horizontal adjustment groove 52. A first guide groove 58 is opened at the bottom end of the horizontal positioning block 53. A second card slot 59 is opened in the middle of one end of the top positioning block 56 close to the up-and-down adjustment groove 54. Second guide grooves 510 are opened at both sides of one end of the top positioning block 56 close to the up-and-down adjustment groove 54. Connecting grooves 511 are fixedly communicated with the inner cavities of the horizontal adjustment groove 52 and the up-and-down adjustment groove 54.

[0026] Furthermore, as Figure 3 、 Figure 4 andFigure 5 As shown, the first card slot 57 corresponds to and is connected to the inner cavity of the horizontal adjustment slot 52, and the second card slot 59 corresponds to and is connected to the inner cavity of the up-and-down adjustment slot 54. One of the adjustment handles 55 and the connection slot 511 are horizontally arranged, and the other adjustment handle 55 and the connection slot 511 are vertically arranged. The up-and-down and left-and-right positions of the center point are adjusted by the two adjustment handles 55 arranged in different directions.

[0027] Furthermore, as Figure 5 shown, the adjustment handle 55 includes a threaded rod 551 threadedly connected to the inner cavity of the connection slot 511. One end of the threaded rod 551 is fixedly connected with a clamping block 552, and one end of the clamping block 552 away from the threaded rod 551 is fixedly connected with a handle rod 553. By rotating the handle rod 553, the threaded rod 551 is driven to rotate in the inner cavity of the connection slot 511.

[0028] Furthermore, as Figure 3 、 Figure 4 and Figure 5 shown, one ends of the two clamping blocks 552 are respectively movably connected to the inner cavities of the horizontal adjustment slot 52 and the up-and-down adjustment slot 54, and the other ends of the two clamping blocks 552 are respectively movably connected to the inner cavities of the first card slot 57 and the second card slot 59. When the position of the center point needs to be adjusted, by rotating the handle rod 553, the threaded rod 551 rotates in the inner cavity of the connection slot 511. When rotating clockwise, the threaded rod 551 continuously screws into the inner cavity of the connection slot 511. When rotating counterclockwise, the threaded rod 551 screws out of the inner cavity of the connection slot 511. By the movement of the threaded rod 551 in the inner cavity of the connection slot 511, the clamping block 552 is driven to move in the inner cavities of the horizontal adjustment slot 52 and the up-and-down adjustment slot 54. The clamping block 552 is simultaneously engaged in the inner cavities of the first card slot 57 and the second card slot 59. By the movement of the clamping block 552 in the inner cavities of the horizontal adjustment slot 52 and the first card slot 57, the horizontal position adjustment of the horizontal positioning block 53 is realized. By the movement of the clamping block 552 in the inner cavities of the up-and-down adjustment slot 54 and the second card slot 59, the up-and-down position adjustment of the center point positioning block 56 is realized.

[0029] Furthermore, as Figure 3 and Figure 4As shown, one side of the top end of the positioning seat 51 is fixedly connected with a first guiding block 512. Two second guiding blocks 513 are fixedly connected to one end of the horizontal positioning block 53 close to the top-point positioning block 56. The first guiding block 512 corresponds to the inner cavity position of the first guiding groove 58 and is movably connected thereto. The second guiding block 513 corresponds to the inner cavity position of the second guiding groove 510 and is movably connected thereto. During the movement of the horizontal positioning block 53, it slides on the surface of the first guiding block 512 through the first guiding groove 58 opened at the bottom end. During the movement of the top-point positioning block 56, it slides on the surface of the second guiding block 513 through the second guiding groove 510 opened at one end, avoiding the situation that the horizontal positioning block 53 and the top-point positioning block 56 move when not fixed and the movement direction deviates, resulting in the deviation of the central position of the top point, effectively increasing the accuracy of the top-point position adjustment.

[0030] Further, as Figure 2 shown, an installation groove 514 is opened on one side of the top end of the top-point positioning block 56. A fixing block 515 is installed in the inner cavity of the installation groove 514, and a top-point body 516 is installed on the fixing block 515. With the movement of the horizontal positioning block 53 and the top-point positioning block 56, the position adjustment of the top-point body 516 is realized, so that when the headstock and the tailstock in the device are already fixed, the up, down, left, and right positions of the top-point body 516 can still be adjusted through the adjustable mechanism 5, ensuring the high-precision centering and calibration of the top-point body 516.

[0031] Further, as Figure 6 shown, a plurality of first installation holes 517 are opened at the top end of the positioning seat 51, and a plurality of second installation holes 6 are opened at the top end of the translation slide 3. The positioning seat 51 is movably connected between two limiting rods 4. The positions of the first installation holes 517 and the second installation holes 6 correspond and are connected and communicated. The overall position of the adjustable mechanism 5 is adjusted through the two limiting rods 4 connected to the top end of the translation slide 3, ensuring that the whole adjustable mechanism 5 is always at the central position of the top end of the translation slide 3. Bolts and other connecting parts are inserted into the inner cavities of the first installation holes 517 and the second installation holes 6 to fix the position of the adjustable mechanism 5 at the top end of the translation slide 3.

[0032] Further, as Figure 1As shown in the figure, a servo motor 7 is fixedly installed at one end of the processing pedestal 1. A lead screw 8 is arranged in the inner cavity of the guide rail 2. Two sliding sleeves 9 are fixedly connected to the bottom end of the translation slide 3. The output end of the servo motor 7 is fixedly connected with a coupling 10. The servo motor 7 is in transmission connection with the lead screw 8 through the coupling 10. The rotational power of the servo motor 7 is transmitted to the lead screw 8 through the coupling 10 to realize the rotation of the lead screw 8. Among them, the existing technologies of the servo motor 7 and the coupling 10 are relatively mature and will not be elaborated here. Both of the two sliding sleeves 9 are threadedly connected to the outer surface of the lead screw 8. When the lead screw 8 rotates, it drives the sliding sleeves 9 connected to its surface to realize linear motion, drives the top translation slide 3 to translate, controls the advance and retreat of the center body 516, and adjusts the thrust of the center body 516 in real time to maintain a constant clamping force and avoid machining errors caused by workpiece deformation or vibration.

[0033] Working principle of the present invention: After the headstock and the tailstock in the device are fixedly installed, the servo motor 7 is started, and the rotational power of the servo motor 7 is transmitted to the lead screw 8 through the coupling 10 to realize the rotation of the lead screw 8. Both sliding sleeves 9 are threadedly connected to the outer surface of the lead screw 8. When the lead screw 8 rotates, the sliding sleeves 9 connected to the surface are driven to perform linear motion, driving the top translation slide 3 to translate, controlling the advancement and retraction of the center drill body 516, and adjusting the thrust of the center drill body 516 in real time to maintain a constant clamping force to fix the workpiece, avoiding machining errors caused by workpiece deformation or vibration. During the workpiece machining process, according to the machining conditions of the workpiece and the vibration conditions generated during the operation of the device, the position of the center drill body 516 is adjusted. First, by rotating the handle rod 553, the threaded rod 551 rotates in the inner cavity of the connection groove 511. When rotating clockwise, the threaded rod 551 continuously screws into the inner cavity of the connection groove 511. When rotating counterclockwise, the threaded rod 551 screws out of the inner cavity of the connection groove 511. Through the movement of the threaded rod 551 in the inner cavity of the connection groove 511, the clamping block 552 is driven to move in the inner cavities of the horizontal adjustment groove 52 and the up-and-down adjustment groove 54. The clamping block 552 is simultaneously engaged in the inner cavities of the first card slot 57 and the second card slot 59. Through the movement of the clamping block 552 in the inner cavities of the horizontal adjustment groove 52 and the first card slot 57, the horizontal positioning block 53 is driven to translate left and right, realizing the adjustment of the horizontal position of the center drill body 516. Through the movement of the clamping block 552 in the inner cavities of the up-and-down adjustment groove 54 and the second card slot 59, the center drill positioning block 56 is driven to move up and down, realizing the adjustment of the up-and-down position of the center drill body 516. During the movement of the horizontal positioning block 53, it slides on the surface of the first guiding block 512 through the first guiding groove 58 opened at the bottom end. During the movement of the center drill positioning block 56, it slides on the surface of the second guiding block 513 through the second guiding groove 510 opened at one end, avoiding the situation where the horizontal positioning block 53 and the center drill positioning block 56 move without being fixed and the moving direction deviates, resulting in the deviation of the central position of the center drill body 516. When the headstock and the tailstock in the device are already fixed, according to the deviation of the central position during the workpiece machining process, the position of the center drill body 516 in the up, down, left, and right directions can also be adjusted by adjusting the handle 55, ensuring the accuracy of the alignment between the center drill and the workpiece center and the machining accuracy of the workpiece, effectively improving the adaptability of the structure. At the same time, according to the specific machining conditions of the machined workpiece, the position of the adjustable mechanism 5 between the two limit rods 4 can be moved. Through the limit rods 4, it is ensured that the overall adjustable mechanism 5 is always at the center position of the top of the translation slide 3. Moreover, a second mounting hole 6 corresponding to the position of the first mounting hole 517 is opened on the translation slide 3, so that the adjustable mechanism 5 is fixed to the top of the translation slide 3, ensuring the machining accuracy of the device.

[0034] It will be understood that the present invention is described by way of some embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present invention. Additionally, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the present invention.

Claims

1. A center-adjustable servo tailstock, comprising a machining pedestal (1) and a guide rail (2) installed at the top thereof, characterized in that: A translation slide (3) for the movement of the center point is arranged on the outer surface of the guide rail (2). Two limit rods (4) are arranged in the middle of the top end of the translation slide (3), and an adjustable mechanism (5) for adjusting the center position of the center point is arranged between the two limit rods (4). The adjustable mechanism (5) includes a positioning seat (51) arranged at the top end of the translation slide (3). A horizontal adjustment groove (52) is opened at one end of the positioning seat (51). A horizontal positioning block (53) is arranged at the top end of the positioning seat (51). An up-and-down adjustment groove (54) is opened at one side of the top end of the horizontal positioning block (53). Adjustment handles (55) for adjusting the position of the center point are arranged in the inner cavities of the horizontal adjustment groove (52) and the up-and-down adjustment groove (54).

2. The center-adjustable servo tailstock according to claim 1, characterized in that: A center point positioning block (56) is installed at one end of the horizontal positioning block (53) away from the positioning seat (51). A first clamping groove (57) is opened at one end of the inner wall of the horizontal positioning block (53) close to the horizontal adjustment groove (52). A first guiding groove (58) is opened at the bottom end of the horizontal positioning block (53). A second clamping groove (59) is opened in the middle of one end of the center point positioning block (56) close to the up-and-down adjustment groove (54). Second guiding grooves (510) are opened at both sides of one end of the center point positioning block (56) close to the up-and-down adjustment groove (54). Connecting grooves (511) are fixedly communicated with the inner cavities of the horizontal adjustment groove (52) and the up-and-down adjustment groove (54).

3. The center-adjustable servo tailstock according to claim 2, characterized in that: The first clamping groove (57) corresponds to and is connected with the inner cavity of the horizontal adjustment groove (52) in position. The second clamping groove (59) corresponds to and is connected with the inner cavity of the up-and-down adjustment groove (54) in position. One of the adjustment handles (55) and the connecting groove (511) are horizontally arranged, and the other adjustment handle (55) and the connecting groove (511) are vertically arranged.

4. The center-adjustable servo tailstock according to claim 3, characterized in that: The adjustment handle (55) includes a threaded rod (551) threadedly connected to the inner cavity of the connecting groove (511). One end of the threaded rod (551) is fixedly connected with a clamping block (552). One end of the clamping block (552) away from the threaded rod (551) is fixedly connected with a handle rod (553).

5. The center-adjustable servo tailstock according to claim 4, characterized in that: One ends of the two clamping blocks (552) are respectively movably connected to the inner cavities of the horizontal adjustment groove (52) and the up-and-down adjustment groove (54), and the other ends of the two clamping blocks (552) are respectively movably connected to the inner cavities of the first clamping groove (57) and the second clamping groove (59).

6. The center-adjustable servo tailstock according to claim 1, wherein: A first guiding block (512) is fixedly connected to one side of the top end of the positioning seat (51). Two second guiding blocks (513) are fixedly connected to one end of the horizontal positioning block (53) close to the center point positioning block (56). The first guiding block (512) corresponds to and is movably connected to the inner cavity of the first guiding groove (58) in position. The second guiding block (513) corresponds to and is movably connected to the inner cavity of the second guiding groove (510) in position.

7. The center-adjustable servo tailstock according to claim 2, characterized in that: An installation groove (514) is opened at one side of the top end of the center point positioning block (56). A fixing block (515) is installed in the inner cavity of the installation groove (514). A center point body (516) is installed on the fixing block (515).

8. A center-adjustable servo tailstock according to claim 1, characterized in that: A plurality of first mounting holes (517) are formed at the top end of the positioning base (51), and a plurality of second mounting holes (6) are formed at the top end of the translation slide (3). The positioning base (51) is movably connected between two limiting rods (4), and the positions of the first mounting holes (517) and the second mounting holes (6) correspond to each other and are connected and communicated.

9. The center-adjustable servo tailstock according to claim 1, characterized in that: A servo motor (7) is fixedly installed at one end of the processing table base (1). A lead screw (8) is arranged in the inner cavity of the guide rail (2). Two sliding sleeves (9) are fixedly connected to the bottom end of the translation slide (3). The output end of the servo motor (7) is fixedly connected with a coupling (10). The servo motor (7) is in transmission connection with the lead screw (8) through the coupling (10). Both of the two sliding sleeves (9) are threadedly connected to the outer surface of the lead screw (8).

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