Tailstock and machine tool

Abstract

The application discloses a tailstock and a machine tool. The tailstock comprises a main body, a tailstock assembly, a pressure measuring assembly and a driving assembly. The main body is provided with a receiving cavity which penetrates the main body along a first direction. The tailstock assembly is arranged in the receiving cavity and comprises a tip which extends out of the main body along the first direction. The tailstock assembly can reciprocate along the first direction and the opposite direction. A sealed cavity is arranged between the tailstock assembly and the main body. The cavity wall of the sealed cavity comprises at least part of the inner circumference of the main body and part of the outer circumference of the tailstock assembly. The volume of the sealed cavity can change with the movement of the tailstock assembly relative to the main body. The pressure measuring assembly is arranged in the main body and is connected to the sealed cavity to measure the pressure of the sealed cavity. The driving assembly is connected to the tailstock assembly to drive the tailstock assembly to reciprocate at a variable speed. The operator can adjust the speed of the driving assembly in driving the tailstock assembly to move in time by observing the pressure of the sealed cavity measured by the pressure measuring assembly, so that the pressure applied by the tailstock assembly to the workpiece can be adjusted, and thus the machining precision of the workpiece can be improved.

Description

Technical Field

[0001] This application relates to the field of machine tool processing technology, and in particular to a tailstock and a machine tool. Background Technology

[0002] Existing machine tools press against the workpiece by controlling the extension of the tailstock tip. However, operators rely solely on experience to adjust the tip's extension, making it impossible to accurately adjust it based on the specific workpiece. This results in the tip applying either too much or too little pressure. The consequences are twofold: excessive pressure can damage or deform the workpiece, while insufficient pressure can cause it to deviate during machining, leading to lower workpiece precision. Utility Model Content

[0003] In view of the above situation, it is necessary to provide a tailstock and machine tool that can help improve the machining accuracy of the workpiece.

[0004] This application provides a tailstock, including a body, a tip assembly, a pressure measuring assembly, and a drive assembly. The body has a receiving cavity extending through it along a first direction. The tip assembly is disposed in the receiving cavity and includes a tip extending out of the body along the first direction. The tip assembly is reciprocating along the first direction and in the opposite direction. A sealing cavity is provided between the tip assembly and the body. The cavity wall includes at least a portion of the inner periphery of the body and a portion of the outer periphery of the tip assembly. The volume of the sealing cavity is variable as the tip assembly moves relative to the body. The pressure measuring assembly is disposed in the body and communicates with the sealing cavity to measure the pressure in the sealing cavity. The drive assembly is connected to the tip assembly to drive the tip assembly to reciprocate at a variable speed.

[0005] The tip assembly includes a pointed tip and is reciprocally movable within a receiving cavity. By moving the tip assembly toward or away from the workpiece, the amount of tip extension can be easily adjusted to apply pressure or depressurize the workpiece. Furthermore, the volume of the sealing cavity varies with the movement of the tip assembly, thus the pressure within the sealing cavity changes accordingly. By observing the pressure measured in the sealing cavity by the pressure measuring component, the operator can promptly adjust the speed at which the drive assembly moves the tip assembly. This allows for easy adjustment of the pressure applied to the workpiece by the tip assembly, thereby improving the machining accuracy of the workpiece.

[0006] In one or more of the above embodiments, the tailstock includes a first sealing member surrounding the inner circumference of the main body and a second sealing member surrounding the outer circumference of the tip assembly. The cavity wall of the sealing cavity includes at least a portion of the inner circumference of the main body, a portion of the outer circumference of the tip assembly, the first sealing member, and the second sealing member. By having the first sealing member surrounding the inner circumference of the main body and the second sealing member surrounding the outer circumference of the tip assembly, when the tip assembly moves relative to the main body, the second sealing member can move closer to or further away from the first sealing member. This improves the sealing performance of the sealing cavity during the movement of the tip assembly, thereby improving the accuracy of the pressure measuring results.

[0007] In one or more of the above embodiments, the top component includes an abutment, a receiving member, a connecting member, and an elastic member. The abutment has a pointed tip, the receiving member accommodates the abutment, and the cavity wall of the sealed cavity includes at least a portion of the outer periphery of the receiving member. The connecting member is disposed in the receiving member and connected to the driving component. The elastic member is disposed between the receiving member and the connecting member along a first direction and is in a compressed state. When the driving component drives the connecting member to move, the connecting member can drive the receiving member through the elastic member. If pressure is applied by the driving component, the tendency of the elastic member to restore its elastic deformation can play a buffering role to reduce the pressure increase rate of the sealed cavity; if pressure is depressurized by the driving component, the tendency of the elastic member to restore its elastic deformation can play a boosting role to accelerate the depressurization rate of the sealed cavity.

[0008] In one or more of the above embodiments, the output motion of the drive component is a rotational motion of the rotation axis parallel to the first direction. The tailstock includes a transmission component rotatably disposed on the main body. Along the first direction, one end of the transmission component is connected to the drive component, and the drive component drives the transmission component to rotate at a variable speed. The other end of the transmission component is threadedly connected to the tip component. The transmission component is restricted to move along the first direction, and the tip component is restricted to rotate relative to the main body. Through the threaded connection between the transmission component and the tip component, when the drive component drives the transmission component to rotate, the movement of the tip component along the first direction is more precise. When the tip component is driven to move by the drive component, if the reading of the pressure measuring component differs from the expected value by a large margin, the pressure in the sealing cavity can be quickly brought closer to the expected value by increasing the rotation speed of the drive component. If the reading of the pressure measuring component differs from the expected value by a small margin, the pressure in the sealing cavity can be finely adjusted by decreasing the rotation speed of the drive component. This allows for precise adjustment of the rate of change of the sealing cavity pressure and more convenient adjustment of the pressure applied to the workpiece by the tip component.

[0009] In one or more of the above embodiments, the tailstock includes a first support member, and a main body is disposed on the first support member along a second direction, which is the direction of gravity. The contact surface between the main body and the first support member is inclined to a plane defined by the first direction and a third direction, and the main body is movable relative to the first support member along the first direction and in the opposite direction of the first direction, so that the main body can reciprocate along the second direction and in the opposite direction of the second direction. The first direction, the second direction, and the third direction are perpendicular to each other. In this case, by moving the main body relative to the first support member along the first direction and in the opposite direction of the first direction, the position of the tip assembly along the second direction can be easily adjusted.

[0010] In one or more of the above embodiments, the first support member includes a limiting part and an adjusting part. Along the first direction, the limiting part is disposed at both ends of the main body and there is a gap between the limiting part and the main body. The adjusting part is movably disposed at the limiting part and abuts against the main body. The limiting part and the adjusting part can form support at both ends of the main body along the first direction and the opposite direction of the first direction, which is beneficial to keep the position of the top component fixed after adjustment along the second direction.

[0011] In one or more of the above embodiments, the adjusting part and the limiting part are threadedly connected. In this case, it is convenient to precisely adjust the position of the tip assembly along a third direction.

[0012] In one or more of the above embodiments, the tailstock includes a second support member, and a first support member is disposed on the second support member along a second direction, and the first support member is reciprocating relative to the second support member in a third direction and in the opposite direction of the third direction. In this case, by moving the first support member relative to the second support member in the third direction and in the opposite direction of the third direction, the position of the tip assembly along the third direction can be easily adjusted.

[0013] In one or more of the above embodiments, the tip assembly is provided with a guide groove, the length direction of which is parallel to the first direction. The main body is provided with a guide member, part of which is disposed in the guide groove. The cooperation of the guide groove and the guide member guides the tip assembly to move relative to the main body along the first direction and in the opposite direction, which helps improve the accuracy of the tip assembly's movement along the first direction and in the opposite direction. Furthermore, the cooperation of the guide groove and the guide member also helps to limit the rotation of the tip assembly relative to the main body.

[0014] A second aspect of this application provides a machine tool, including a tailstock as described in the first aspect of this application. The tailstock applies appropriate pressure to the workpiece, which is beneficial for improving the machining accuracy of the workpiece by the machine tool. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the tailstock provided in one embodiment of this application.

[0016] Figure 2For along Figure 1 A partial cross-sectional diagram of section line II-II.

[0017] Figure 3 for Figure 2 Enlarged view of the elliptical dashed area.

[0018] Figure 4 For along Figure 1 A schematic diagram of another section of the cross-section along section line II-II.

[0019] Explanation of main component symbols

[0020] 100. Tailstock; 10. Main body; 101. Receiving cavity; 102. Sealing cavity; 11. Oil filling part; 111. Oil filling hole; 112. Oil plug; 12. Guide member; 13. First groove; 20. Top assembly; 201. Tip; 21. Guide groove; 22. Abutment member; 23. Receiving member; 24. Connecting member; 25. Elastic member; 26. Second groove; 30. Pressure measuring assembly; 40. Drive assembly; 41. Moving part 42. Power source; 43. Power output component; 50. Speed ​​regulating component; 51. Transmission assembly; 51. Fixing component; 511. Protrusion; 52. Transmission component; 521. Recess; 60. First sealing component; 70. Second sealing component; 80. First support component; 81. Limiting part; 82. Adjusting part; 83. Pressing part; 84. Slide rail; 90. Second support component; 91. Slide groove; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0022] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or may also have a component that is centrally located. When a component is considered to be "set" on another component, it can be directly set on the other component or may also have a component that is centrally located.

[0023] Unless otherwise stated, the term "multiple" as used herein refers to two or more.

[0024] The terms “first”, “second”, etc., are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implying the quantity, specific order, or primary and secondary relationship of the indicated technical features.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] Some embodiments of this application will now be described with reference to the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0027] Please see Figures 1 to 4 This application provides a tailstock 100, including a main body 10, a tip assembly 20, a pressure measuring assembly 30, and a drive assembly 40. The main body 10 has a receiving cavity 101 that extends through the main body 10 along a first direction X, i.e., the first direction X is the direction in which the receiving cavity 101 extends through the main body 10. The tip assembly 20 is disposed in the receiving cavity 101 and includes a tip 201 extending out of the main body 10 along the first direction X. The tip 201 can be used to press against a workpiece during machining. The tip assembly 20 can reciprocate along the first direction X and in the opposite direction of the first direction X, thereby allowing the tip assembly 20 to move toward or away from the workpiece during machining, thus facilitating adjustment of the extension amount of the tip 201 to pressurize or depressurize the workpiece. A sealing cavity 102 is provided between the tip assembly 20 and the main body 10, and the cavity wall of the sealing cavity 102 includes at least a portion of the inner periphery of the main body 10 and a portion of the outer periphery of the tip assembly 20. The volume of the sealing cavity 102 varies with the movement of the tip assembly 20 relative to the main body 10. For example, when the tip assembly 20 moves along the first direction X, the volume of the sealing cavity 102 decreases; when the tip assembly 20 moves in the opposite direction of the first direction X, the volume of the sealing cavity 102 increases. Therefore, the pressure within the sealing cavity 102 changes with the movement of the tip assembly 20. A pressure measuring component 30 is disposed on the main body 10 and communicates with the sealing cavity 102 to measure the pressure in the sealing cavity 102. A drive assembly 40 is connected to the tip assembly 20 to drive the tip assembly 20 to reciprocate at a variable speed. By observing the pressure measured in the sealing cavity 102 by the pressure measuring component 30, the operator can adjust the speed at which the drive assembly 40 drives the tip assembly 20 in a timely manner, facilitating the adjustment of the pressure applied by the tip assembly 20 to the workpiece, thereby improving the machining accuracy of the workpiece.

[0028] Please refer to the following: Figure 2 and Figure 3In some embodiments, the main body 10 is provided with an oil injection section 11, which includes an oil injection hole 111 and an oil plug 112. The oil injection hole 111 is connected to the sealing cavity 102 and is used to inject lubricating oil. The oil plug 112 is used to close the oil injection hole 111 so that the tip assembly 20 can move more smoothly when it reciprocates along the first direction X and the opposite direction of the first direction X through the lubricating oil.

[0029] Please refer to the following: Figure 2 and Figure 3 In some embodiments, the main body 10 is provided with a guide member 12, and the tip assembly 20 is provided with a guide groove 21. The length direction of the guide groove 21 is parallel to the first direction X, and part of the guide member 12 is disposed in the guide groove 21. The cooperation of the guide groove 21 and the guide member 12 can guide the tip assembly 20 to move relative to the main body 10 along the first direction X and the opposite direction of the first direction X, which is beneficial to improving the accuracy of the tip assembly 20 moving along the first direction X and the opposite direction of the first direction X. In some embodiments, the cooperation of the guide groove 21 and the guide member 12 is also beneficial to restrict the rotation of the tip assembly 20 relative to the main body 10.

[0030] Please see Figure 2 In some embodiments, the tip assembly 20 includes an abutment 22 and a receiving member 23. The abutment 22 has a pointed tip 201, and the receiving member 23 accommodates the abutment 22. The cavity wall of the sealed cavity 102 includes at least a portion of the outer periphery of the receiving member 23. The drive assembly 40 drives the receiving member 23 to reciprocate at a variable speed. In some embodiments, the abutment 22 is detachably accommodated in the receiving member 23, facilitating replacement of the abutment 22.

[0031] Please see Figure 2 In some embodiments, the top component 20 includes a connector 24 disposed on the receiving member 23 and connected to the drive component 40. The drive component 40 drives the receiving member 23 to move by moving the connector 24.

[0032] Please see Figure 2 In some embodiments, the tip assembly 20 includes an elastic element 25, which is disposed between the receiving member 23 and the connecting member 24 along a first direction X and is in a compressed state. When the drive assembly 40 drives the connecting member 24 to move, the connecting member 24 can drive the receiving member 23 to move via the elastic element 25. Furthermore, when the extension amount of the tip 201 is adjusted by the drive assembly 40 to pressurize the workpiece, the tendency of the elastic element 25 to restore its elastic deformation can have a buffering effect to reduce the pressurization rate of the sealing cavity 102; when the extension amount of the tip 201 is adjusted by the drive assembly 40 to depressurize the workpiece, the tendency of the elastic element 25 to restore its elastic deformation can have a boosting effect to accelerate the depressurization rate of the sealing cavity 102. It is understood that the elastic element 25 includes, but is not limited to, springs and sheet springs.

[0033] In some embodiments, the main body 10 is provided with a measuring hole communicating with the sealed cavity 102. The pressure measuring assembly 30 includes a pressure gauge, which is disposed on the main body 10 and its connector (such as a rubber conical head, hose, or sensor) is inserted into the measuring hole of the main body 10, thereby communicating with the sealed cavity 102. The pressure of the sealed cavity 102 measured by the pressure measuring assembly 30 can be displayed by mechanical display or electronic display.

[0034] Please refer to the following: Figure 1 and Figure 2 In some embodiments, the drive assembly 40 includes a power source 41 and a power output member 42. The power source 41 is connected to the power output member 42, and the power output member 42 is connected to the tip assembly 20. The power source 41 provides power to the power output member 42, enabling the power output member 42 to drive the tip assembly 20 to move. In some embodiments, the power output member 42 of the drive assembly 40 is connected to a connector 24 of the tip assembly 20, and the power output member 42 drives the receiving member 23 to move by driving the connector 24 to move.

[0035] Please see Figure 1 In some embodiments, the drive assembly 40 includes a speed regulator 43 connected to the power source 41 to regulate the power supplied by the power source 41 to the power output assembly 42.

[0036] In some embodiments, the power source 41 is a power supply, the power output component 42 is an electric motor, and the speed regulating component 43 is an adjustment knob. In some embodiments, the power source 41 is an air source, the power output component 42 is a cylinder, and the speed regulating component 43 is a regulating valve.

[0037] In some embodiments, the output motion of the drive assembly 40 is a linear motion along the first direction X. The drive assembly 40 is directly connected to the tip assembly 20. The power source 41 is an air source, the power output component 42 is a cylinder, and the speed regulating component 43 is a regulating valve. The piston rod of the cylinder is directly connected to the tip assembly 20. The tip assembly 20 is moved along the first direction X by extending and retracting the piston rod. The speed at which the piston rod drives the tip assembly 20 is adjusted by changing the air intake pressure of the air source to the cylinder through the regulating valve. In some embodiments, the output motion of the drive assembly 40 is a rotational motion with the rotation axis parallel to the first direction X. The drive assembly 40 is directly connected to the tip assembly 20. The power source 41 is a power supply, the power output component 42 is a motor, and the speed regulating component 43 is a regulating knob. The shaft of the motor is threadedly connected to the tip assembly 20. The tip assembly 20 is restricted from rotating relative to the main body 10. The tip assembly 20 is moved along the first direction X by rotating the shaft. The speed at which the motor shaft drives the tip assembly 20 is adjusted by changing the input power of the power supply to the motor through the regulating knob.

[0038] Please see Figure 2In some embodiments, the tailstock 100 includes a transmission assembly 50, and a drive assembly 40 is indirectly connected to the tip assembly 20 via the transmission assembly 50. In some embodiments, the transmission assembly 50 is rotatably disposed on the main body 10, and the output motion of the drive assembly 40 is a rotational motion with its axis of rotation parallel to a first direction X. Along the first direction X, one end of the transmission assembly 50 is connected to the drive assembly 40, and the drive assembly 40 drives the transmission assembly 50 to rotate at a variable speed. The other end of the transmission assembly 50 is threadedly connected to the tip assembly 20, and the transmission assembly 50 is restricted from moving along the first direction X, while the tip assembly 20 is restricted from rotating relative to the main body 10. Through the threaded connection between the transmission assembly 50 and the tip assembly 20, when the drive assembly 40 drives the transmission assembly 50 to rotate, the movement of the tip assembly 20 along the first direction X is more precise. When the center assembly 20 is moved by the drive assembly 40, if the reading of the pressure measuring assembly 30 differs from the expected value by a large margin, the pressure in the sealing cavity 102 can be quickly brought closer to the expected value by increasing the rotation speed of the drive assembly 40. If the reading of the pressure measuring assembly 30 differs from the expected value by a small margin, the pressure in the sealing cavity 102 can be finely adjusted by decreasing the rotation speed of the drive assembly 40. This allows for precise adjustment of the rate of change of pressure in the sealing cavity 102, and makes it more convenient to adjust the pressure applied to the workpiece by the center assembly 20.

[0039] Please see Figure 2 In some embodiments, the transmission assembly 50 includes a fixing member 51 and a transmission member 52. The fixing member 51 is detachably fixed to the main body 10, and the transmission member 52 is rotatably disposed on the fixing member 51 and rotatably disposed on the main body 10. In some embodiments, the power output member 42 of the drive assembly 40 is indirectly connected to the connector 24 of the tip assembly 20 through the transmission member 52 of the transmission assembly 50.

[0040] Please see Figure 2 In some embodiments, the fixing member 51 is provided with a protrusion 511 extending in a direction perpendicular to the first direction X, and the transmission member 52 is provided with a recess 521 surrounding it in a direction perpendicular to the first direction X. At least part of the protrusion 511 is engaged with the recess 521, so that the transmission member 52 is rotatably disposed on the body 10 and is restricted to move along the first direction X.

[0041] In some embodiments, the transmission member 52 is threadedly connected to the connector 24, and the connector 24 is restricted from rotating relative to the receiving member 23. Methods for restricting the rotation of the connector 24 relative to the receiving member 23 include, but are not limited to, making the connector 24 non-cylindrical.

[0042] Please refer to the following: Figure 2 and Figure 3In some embodiments, the tailstock 100 includes a first seal 60 and a second seal 70. The first seal 60 is disposed around the inner periphery of the main body 10, and the second seal 70 is disposed around the outer periphery of the tip assembly 20. The cavity wall of the sealing cavity 102 includes at least a portion of the inner periphery of the main body 10, a portion of the outer periphery of the tip assembly 20, the first seal 60, and the second seal 70. By having the first seal 60 disposed around the inner periphery of the main body 10 and the second seal 70 disposed around the outer periphery of the tip assembly 20, when the tip assembly 20 moves relative to the main body 10, the second seal 70 can move closer to or further away from the first seal 60. This improves the sealing performance of the sealing cavity 102 during the movement of the tip assembly 20, thereby improving the accuracy of the measurement results of the pressure measuring assembly 30.

[0043] Please see Figure 3 In some embodiments, the inner periphery of the body 10 is provided with a first groove 13 recessed in a direction opposite to the tip assembly 20, and the first seal 60 is partially accommodated in the first groove 13. The outer periphery of the tip assembly 20 is provided with a second groove 26 recessed in a direction opposite to the body 10, and the second seal 70 is partially accommodated in the second groove 26. When the tip assembly 20 moves relative to the body 10, this helps to reduce the possibility of the first seal 60 detaching from the body 10 and the second seal 70 detaching from the tip assembly 20. In some embodiments, the first seal 60 is fixed to the inner periphery of the body 10 by bonding or welding, and the second seal 70 is fixed to the outer periphery of the tip assembly 20 by bonding or welding.

[0044] In some embodiments, the first seal 60 and the second seal 70 are elastically deformable, and are compressed between the inner periphery of the body 10 and the outer periphery of the tip assembly 20. In this case, the first seal 60 and the second seal 70 have a tendency to recover their elastic deformation and make close contact with the inner periphery of the body 10 and the outer periphery of the tip assembly 20, which helps to further improve the sealing performance of the sealing cavity 102 during the movement of the tip assembly 20, thereby helping to further improve the accuracy of the measurement results of the pressure measuring assembly 30.

[0045] In some embodiments, the first seal 60 and the second seal 70 are sealing rings.

[0046] Please refer to the following: Figure 1 and Figure 4In some embodiments, the tailstock 100 includes a first support member 80, and a main body 10 is disposed on the first support member 80 along a second direction Y, where the second direction Y is the direction of gravity. The contact surface between the main body 10 and the first support member 80 is inclined to a plane defined by a first direction X and a third direction Z, and the main body 10 can reciprocate relative to the first support member 80 along the first direction X and the opposite direction of the first direction X, so that the main body 10 can reciprocate along the third direction Z and the opposite direction of the third direction Z. The first direction X, the second direction Y, and the third direction Z are all perpendicular to each other. In this case, by moving the main body 10 relative to the first support member 80 along the first direction X and the opposite direction of the first direction X, the position of the tip assembly 20 along the second direction Y can be easily adjusted. In some embodiments, by setting the inclination of the contact surface between the main body 10 and the first support member 80 to be small, the position change of the tip component 20 in the second direction Y is small when the main body 10 moves relative to the first support member 80 in the first direction X and the opposite direction of the first direction X; by setting the inclination of the contact surface between the main body 10 and the first support member 80 to be large, the position change of the tip component 20 in the second direction Y is large when the main body 10 moves relative to the first support member 80 in the first direction X and the opposite direction of the first direction X.

[0047] Please refer to the following: Figure 1 and Figure 4 In some embodiments, the first support member 80 includes a limiting part 81 and an adjusting part 82. Along the first direction X, the limiting part 81 is disposed at both ends of the main body 10 and there is a gap between the limiting part 81 and the main body 10. The adjusting part 82 is movably disposed on the limiting part 81 and abuts against the main body 10. The limiting part 81 and the adjusting part 82 can form support at both ends of the main body 10 along the first direction X and the opposite direction of the first direction X, which is beneficial to keep the position of the tip assembly 20 fixed after adjustment along the second direction Y.

[0048] In some embodiments, the adjusting part 82 is threadedly connected to the limiting part 81. In this case, it is possible to precisely adjust the position of the tip assembly 20 along the third direction Z.

[0049] In some embodiments, the first support member 80 includes a pressing part 83, which is pressed against the main body 10 along the second direction Y, so that the position of the top component 20 after adjustment along the second direction Y is further fixed.

[0050] Please refer to the following: Figure 1 and Figure 4In some embodiments, the tailstock 100 includes a second support member 90, and a first support member 80 is disposed on the second support member 90 along a second direction Y, and the first support member 80 is reciprocating relative to the second support member 90 along a third direction Z and in the opposite direction of the third direction Z. In this case, by moving the first support member 80 relative to the second support member 90 along the third direction Z and in the opposite direction of the third direction Z, the position of the tip assembly 20 along the third direction Z can be easily adjusted.

[0051] Please see Figure 4 In some embodiments, the first support member 80 includes a slide rail 84 extending in a direction parallel to the third direction Z, and the second support member 90 includes a slide groove 91 extending in a direction parallel to the third direction Z, with the slide rail 84 slidably disposed in the slide groove 91. This is beneficial for improving the accuracy of the movement of the tip assembly 20 along the third direction Z.

[0052] In some embodiments, the first support member 80 includes a fastener (not shown), and the second support member 90 includes a fastening hole (not shown). The depth direction of the fastening hole is parallel to the second direction Y. The fastener is removably disposed in the fastening hole, which facilitates maintaining the position of the tip assembly 20 after adjustment along the third direction Z. In some embodiments, the fastener is a screw, and the fastening hole is a screw hole.

[0053] One embodiment of this application provides a machine tool including a tailstock 100 as described above. The tailstock 100 applies appropriate pressure to the workpiece, which is beneficial to improving the machining accuracy of the workpiece by the machine tool.

[0054] In some embodiments, the usage of this application is as follows:

[0055] Move the first support member 80 relative to the second support member 90 along the third direction Z or the opposite direction Z, adjusting the tip assembly 20 to a suitable position along the third direction Z and keeping it fixed. Move the main body 10 relative to the first support member 80 along the first direction X or the opposite direction X, adjusting the tip assembly 20 to a suitable position along the second direction Y and keeping it fixed. Turn on the drive assembly 40, moving the tip assembly 20 towards the workpiece along the first direction X and into contact with the workpiece. Observe the reading of the pressure measuring component 30 and gradually reduce the speed of the drive assembly 40. When the reading of the pressure measuring component 30 reaches the desired value, turn off the drive assembly 40. Operate the machine tool to process the workpiece. After processing, turn on the drive assembly 40 again, moving the tip assembly 20 away from the workpiece along the opposite direction X until the workpiece can be removed. Remove the workpiece and turn off the drive assembly 40.

[0056] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the substantive scope of this application fall within the scope of this application.

Claims

1. A tailstock, characterized in that, include: The main body has a receiving cavity, which penetrates the main body along a first direction; A tip assembly is disposed in the receiving cavity and includes a tip extending out of the receiving cavity along the first direction. The tip assembly is reciprocating along the first direction and the opposite direction of the first direction. A sealing cavity is provided between the tip assembly and the body. The cavity wall of the sealing cavity includes at least a portion of the inner periphery of the body and a portion of the outer periphery of the tip assembly. The volume of the sealing cavity is variable as the tip assembly moves relative to the body. A pressure measuring component is disposed on the main body and communicates with the sealed cavity to measure the pressure in the sealed cavity; as well as A drive component, connected to the top component, drives the top component to reciprocate at a variable speed.

2. The tailstock according to claim 1, characterized in that, The tailstock includes a first seal surrounding the inner periphery of the main body and a second seal surrounding the outer periphery of the tip assembly. The cavity wall of the sealing cavity includes at least a portion of the inner periphery of the main body, a portion of the outer periphery of the tip assembly, the first seal, and the second seal.

3. The tailstock according to claim 1, characterized in that, The top component includes an abutment, a receiving member, a connecting member, and an elastic member. The abutment has the tip. The receiving member receives the abutment and the cavity wall of the sealed cavity includes at least a portion of the outer periphery of the receiving member. The connecting member is disposed on the receiving member and connects to the drive component. The elastic member is disposed between the receiving member and the connecting member along the first direction and is in a compressed state.

4. The tailstock according to claim 1, characterized in that, The output motion of the drive assembly is a rotational motion with the rotation axis parallel to the first direction. The tailstock includes a transmission assembly rotatably disposed on the main body. Along the first direction, one end of the transmission assembly is connected to the drive assembly, and the drive assembly drives the transmission assembly to rotate at a variable speed. The other end of the transmission assembly is threadedly connected to the center assembly. The transmission component is restricted to move along the first direction, and the tip component is restricted to rotate relative to the main body.

5. The tailstock according to claim 1, characterized in that, The tailstock includes a first support member, and the main body is disposed on the first support member along a second direction, the second direction being the direction of gravity; the contact surface between the main body and the first support member is inclined to a plane defined by the first direction and a third direction, and the main body is movable relative to the first support member along the first direction and the opposite direction of the first direction, so that the main body can reciprocate along the second direction and the opposite direction of the second direction; the first direction, the second direction, and the third direction are perpendicular to each other.

6. The tailstock according to claim 5, characterized in that, The first support member includes a limiting part and an adjusting part. Along the first direction, the limiting part is disposed at both ends of the main body and there is a gap between the limiting part and the main body. The adjusting part is movably disposed on the limiting part and abuts against the main body.

7. The tailstock according to claim 6, characterized in that, The adjusting part is threadedly connected to the limiting part.

8. The tailstock according to claim 5, characterized in that, The tailstock includes a second support member, the first support member is disposed on the second support member along the second direction, and the first support member is reciprocating relative to the second support member along the third direction and the opposite direction of the third direction.

9. The tailstock according to any one of claims 1 to 8, characterized in that, The top component is provided with a guide groove, the length direction of which is parallel to the first direction; the main body is provided with a guide member, part of which is located in the guide groove.

10. A machine tool, characterized in that, Includes the tailstock as described in any one of claims 1 to 9.

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