Guide sleeve assembly of precision automatic lathe

Abstract

The invention relates to the field of machine tool accessories, in particular to a guide sleeve assembly of a precision automatic lathe. The device comprises a rotating base, a telescopic shaft sleeve and a clamping structure, the rotating base is rotationally arranged on a machine body of the precision automatic lathe; one end of the telescopic shaft sleeve is connected with a clamping piece of the precision automatic lathe, the other end of the telescopic shaft sleeve is connected with the rotating base, and one end of a bar coaxially penetrates through the rotating base and the telescopic shaft sleeve and then is clamped on the clamping piece; the clamping structure comprises clamping rods and elastic pieces, the clamping rods are located at the rotating base, the clamping rods are evenly arranged in multiple sets in the circumferential direction, each set comprises multiple clamping rods, the multiple clamping rods in each set are arranged at intervals in the axial direction of the bar, and the clamping rods extend in the radial direction of the bar and can slide in the radial direction of the bar; the elastic piece is used for providing clamping force for the clamping rod to clamp the bar. Through the arrangement of the multiple clamping rods, the clamping points of the guide sleeve assembly on the bar are distributed more evenly in the axial direction, and meanwhile the diameter range of the adaptive bar is larger.

Description

Technical Field

[0001] The invention relates to the field of machine tool accessories, and in particular to a Swiss-type lathe guide sleeve assembly. Background Art

[0002] Swiss-type lathe is the full name of Swiss-type CNC lathe, which can also be called spindle box mobile CNC automatic lathe, economical turning and milling compound machine tool or longitudinal cutting lathe. It is a precision processing equipment that can complete turning, milling, drilling, boring, tapping, engraving and other compound processing at the same time. It is mainly used for batch processing of precision hardware and shaft-type special-shaped non-standard parts. The guide sleeve assembly is a commonly used machine tool accessory on Swiss-type lathes. Swiss-type lathes and guide sleeve assemblies can fully clamp both ends of bar parts, and then can process bar parts with relatively large shaft diameters. The Chinese patent document with the authorization announcement number CN 219504133 U discloses a guide sleeve for Swiss-type lathes, which has multiple open grooves evenly arranged along the circumference at the port of the connecting sleeve to clamp the bar. Although the guide sleeve in the above scheme can clamp the end of the bar away from the clamping structure of the Swiss machine, the setting of the open groove makes the diameter range of the clamped bar small, and the guide sleeve needs to be replaced according to the diameter of the bar, which has poor adaptability. At the same time, the open groove should not be too long in the axial direction, resulting in very uneven clamping in the axial direction of the bar and unstable clamping. Moreover, cutting debris can easily enter the guide sleeve from the open groove, affecting the clamping reliability. For large-diameter bars, it is difficult to insert the guide sleeve due to excessive clamping force.

[0003] The information disclosed in the background technology section of the present invention is only intended to deepen the understanding of the general background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention proposes a Swiss-type lathe guide sleeve assembly to solve the problems of unreliable clamping and small adaptability of the existing Swiss-type lathe guide sleeve assembly.

[0005] Another object of the present invention is to solve the problem that cutting debris easily enters the guide sleeve.

[0006] Another object of the present invention is to solve the problem of difficulty in installing rods.

[0007] A Swiss-type lathe guide sleeve assembly of the present invention adopts the following technical solution: it is installed on a Swiss-type lathe and can process bar materials. A spindle control mechanism is arranged on the body of the Swiss-type lathe. The spindle control mechanism includes a motor and a clamping member. The clamping member is connected to the output shaft of the motor. The bar material is installed on the clamping member. The spindle control mechanism can move along a first direction, which is the axial direction of the bar material. The Swiss-type lathe guide sleeve assembly includes: The rotating base rotates the machine body set on the Swiss-type lathe. A telescopic sleeve, one end of which is connected to the clamping member and the other end of which is connected to the rotating base. One end of the bar material coaxially passes through the rotating base and the telescopic sleeve and is clamped on the clamping member. The clamping structure includes a clamping rod and an elastic member. The clamping rod is located at a rotating base. The clamping rod is evenly arranged in multiple groups along the circumferential direction, with multiple clamping rods in each group. The multiple clamping rods in each group are arranged at intervals along the axial direction of the rod. The clamping rod extends radially along the rod and can slide radially along the rod. The elastic member is used to provide clamping force for the clamping rod to clamp the rod.

[0008] Optionally, a ball is provided at one end of the clamping rod close to the bar material, and the ball is rotatably connected to the clamping rod.

[0009] Optionally, the Swiss-made machine guide sleeve assembly further comprises a sealing ring, which is connected to the end surface of the rotating base away from the telescopic sleeve, and the sealing ring is elastic, and a sliding seal is formed between the inner periphery of the sealing ring and the rod material.

[0010] Optionally, a conical through hole is opened in the center of the rotating base, and a frustum is coaxially slidably arranged in the conical through hole, the taper of the frustum is the same as the taper of the conical through hole, and the large ends of both are close to the telescopic sleeve, and a through hole is arranged in the center of the frustum for passing the rod material; a baffle is arranged in the telescopic sleeve, and an elastic member is arranged between the baffle and the frustum, and the elastic member makes the frustum tend to move away from the baffle; the clamping rod is inserted into the frustum along the radial sliding direction of the frustum, and the outer end face of the clamping rod is adapted and abutted against the inner wall surface of the rotating base.

[0011] Optionally, the elastic member is a compression spring.

[0012] Optionally, the Swiss-made machine guide sleeve assembly further includes an adjustment structure, the adjustment structure includes an eccentric rack and a gear, the baffle is coaxially arranged with the telescopic sleeve and is spirally connected with the telescopic sleeve, and the gear is coaxially fixedly connected with the baffle; The centrifugal rack is slidably arranged on the telescopic shaft sleeve, and the centrifugal rack is meshed with the gear. When the centrifugal rack moves outward, the baffle is driven to rotate through the gear. The baffle moves toward the direction close to the cone under the action of the spiral transmission, thereby compressing the elastic member; the elastic coefficient of the elastic member is less than the preset value.

[0013] Optionally, a counterweight is provided at the end of the centrifugal rack.

[0014] Optionally, three centrifugal racks are provided, and the three centrifugal racks are evenly distributed along the circumferential direction and are all meshed with the gear.

[0015] Optionally, a limit block is provided on each centrifugal rack, and an adjusting bolt is threadedly connected to the telescopic sleeve. The number of the adjusting bolts is the same as the number of the centrifugal racks, and the adjusting bolts point to the corresponding limit block and are perpendicular to the limit block.

[0016] Optionally, the telescopic sleeve is a three-section structure, specifically including a first sleeve, a second sleeve and a third sleeve. The first sleeve, the second sleeve and the third sleeve are axially slidably sleeved, the first sleeve is connected to the clamping member, the third sleeve is connected to the rotating base, and the centrifugal rack, gear and baffle are all arranged on the third sleeve.

[0017] The beneficial effects of the present invention are as follows: a guide sleeve assembly of a Swiss-type lathe of the present invention is provided with a telescopic shaft sleeve and a rotating base. By arranging multiple groups of clamping rods in the rotating base, multiple clamping rods in each group are arranged at intervals along the axial direction of the bar material, so that the clamping points of the guide sleeve assembly on the bar material are more evenly distributed along the axial direction, and the clamping is more stable and reliable, avoiding damage to the bar material caused by concentrated clamping points. At the same time, the clamping rods move radially to clamp, so that the guide sleeve assembly of the present invention can adapt to a larger diameter range of the bar material, without the need for frequent replacement of the guide sleeve, and has strong adaptability.

[0018] Furthermore, by arranging an elastic sealing ring on the rotating base, the sealing ring and the bar material are slidably sealed, which can not only adapt to bars of different diameters, but also prevent processing debris from entering the interior of the rotating base, thereby further improving the clamping reliability.

[0019] Furthermore, by setting the frustum, the elastic force of the elastic member is transmitted to the clamping rod through the frustum, and the force on each clamping rod is more uniform, ensuring that the clamping force of each clamping point is more balanced.

[0020] Furthermore, by setting the elastic coefficient of the elastic part to be smaller than a preset value, the rod can pass through the cone more easily during installation. At the same time, with the setting of the adjustment mechanism, the rod can be further clamped during the processing, taking into account both installation and clamping, making installation convenient and clamping reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the overall structure of a Swiss-type lathe guide sleeve assembly in an installed state (including a bar and a clamping part); Figure 2 for Figure 1 A front view of Figure 3 for Figure 2 Middle AA section view; Figure 4 for Figure 3Enlarged view of point B in the middle; Figure 5 for Figure 3 Middle CC section view.

[0023] In the figure: 100, rotating base; 110, connecting ring; 120, sealing ring; 200, telescopic sleeve; 210, first sleeve; 220, second sleeve; 221, guide block; 230, third sleeve; 231, limiting thread; 310, cone; 320, clamping rod; 321, ball; 330, compression spring; 340, baffle; 410, gear; 420, centrifugal rack; 421, limit block; 422, counterweight block; 430, adjusting bolt; 1000, clamping member; 2000, Bar stock. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] like Figures 1 to 5 As shown, a Swiss-type lathe guide sleeve assembly (hereinafter referred to as the guide sleeve assembly) provided by an embodiment of the present invention is installed on the Swiss-type lathe and can process a bar 2000. The Swiss-type lathe includes a machine body, on which a spindle control mechanism is arranged. The spindle control mechanism includes a motor (not shown in the figure) and a clamping member 1000. The clamping member 1000 is connected to the output shaft of the motor. The bar 2000 is installed on the clamping member 1000 and can rotate under the drive of the motor. The spindle control mechanism can move along a first direction, which is the axial direction of the bar 2000. The feeding of the bar 2000 relative to the tool is achieved by moving the spindle control mechanism.

[0026] Among them, the guide sleeve assembly includes a rotating base 100, a telescopic sleeve 200 and a clamping structure; the rotating base 100 is rotatably arranged on the body of the Swiss-type lathe; one end of the telescopic sleeve 200 is connected to the clamping piece 1000 of the spindle control mechanism of the Swiss-type lathe, and the other end is connected to the rotating base 100; one end of the rod 2000 coaxially passes through the rotating base 100 and the telescopic sleeve 200, and then is clamped in the clamping piece 1000.

[0027] The clamping structure includes a clamping rod 320 and an elastic member. The clamping rod 320 is located at the rotating base 100. The clamping rod 320 is evenly arranged in multiple groups along the circumferential direction, with multiple clamping rods in each group. The multiple clamping rods 320 in each group are arranged at intervals along the axial direction of the rod 2000. The clamping rod 320 extends radially along the rod 2000 and can slide radially along the rod 2000. The elastic member is used to provide the clamping force for the clamping rod 320 to clamp the rod 2000.

[0028] In the scheme of this embodiment, by arranging multiple groups of clamping rods 320 in the rotating base 100, the multiple clamping rods 320 in each group are arranged at intervals along the axial direction of the rod 2000, so that the clamping points of the guide sleeve assembly on the rod 2000 are more evenly distributed along the axial direction, and the clamping is more stable and reliable, avoiding damage to the rod 2000 caused by concentrated clamping points. At the same time, the clamping rods 320 move radially to clamp, so that the guide sleeve assembly of the present invention can adapt to a larger diameter range of the rod 2000, without the need for frequent replacement of the guide sleeve, and has strong adaptability.

[0029] Furthermore, a ball 321 is provided at one end of the clamping rod 320 close to the rod 2000, and the ball 321 is rotatably connected to the clamping rod 320. By providing the ball 321, the friction between the rod 2000 and the clamping rod 320 during the insertion process can be reduced, thereby avoiding wear of the rod 2000.

[0030] Furthermore, the guide sleeve assembly of the Swiss-type machine tool of the present invention further includes a sealing ring 120, which is connected to the end face of the rotating base 100 away from the telescopic sleeve 200, and the sealing ring 120 is elastic, and a sliding seal is formed between the inner periphery of the sealing ring 120 and the bar 2000. By providing the elastic sealing ring 120, the gap between the bar 2000 and the rotating base 100 can be sealed, so as to prevent cutting debris from entering the rotating base 100 and affecting the reliability of clamping, and at the same time, it can adapt to the bar 2000 within a larger diameter range, and has stronger adaptability. Among them, the sealing ring 120 can be made of elastic rubber.

[0031] Furthermore, the sealing ring 120 is detachably connected to the rotating base 100, and specifically, bolts are used for connection. By providing a detachable sealing ring 120, when the sealing ring 120 is damaged, the sealing ring 120 can be replaced.

[0032] In one embodiment, the present invention is preferred that a conical through hole is opened at the center of the rotating base 100, a frustum 310 is coaxially slidably arranged in the conical through hole, the taper of the frustum 310 is the same as the taper of the conical through hole and the large ends of both are close to the telescopic sleeve 200, and a through hole is arranged at the center of the frustum 310 for passing the rod 2000; a baffle 340 is arranged in the telescopic sleeve 200, and an elastic member is arranged between the baffle 340 and the frustum 310, and the elastic member makes the frustum 310 have The elastic member is preferably a compression spring 330, and the clamping rod 320 is inserted into the cone 310 along the radial direction of the cone 310, and the outer end surface of the clamping rod 320 is adapted to and abuts against the inner wall surface (the peripheral wall of the tapered through hole) of the rotating base 100, that is, the clamping rod 320 is evenly arranged in multiple groups along the circumferential direction, and each group has multiple clamping rods 320, and each group of multiple clamping rods 320 is arranged at intervals along the axial direction of the cone 310 and inserted into the cone 310 along the radial direction of the cone 310. In the scheme of this embodiment, through the arrangement of the cone 310, the elastic force of the elastic member is transmitted to the clamping rod 320 through the cone 310, and the force of each clamping rod 320 is more uniform, ensuring that the clamping force of each clamping point is more balanced. In order to facilitate the installation of the clamping rod 320, the side wall of the cone 310 is provided with a receiving groove, which is located on one side close to the axis of the cone 310 and connected to the through hole at the center of the cone 310. There are multiple receiving grooves evenly distributed along the circumferential direction. The side wall of the cone 310 is provided with multiple sliding grooves at intervals along the axial direction of the cone 310 corresponding to the position of each receiving groove. The clamping rod 320 is adapted to the sliding groove and slidably inserted in the sliding groove. The receiving groove is used to accommodate the ball 321 to facilitate the sliding of the clamping rod 320. The clamping rod 320 and the sliding groove are both square to limit the rotation of the clamping rod 320. In the solution of this embodiment, in order to make the installation of the sealing ring 120 more reliable, the sealing ring 120 can also be set to be detachably connected to the end surface of the rotating base 100 and the cone 310 away from the telescopic sleeve 200.

[0033] In another embodiment, the clamping rod 320 and the elastic member can also be configured as follows: the clamping rod 320 is inserted into the rotating base 100 along the radial sliding direction of the rotating base 100, and an elastic member is provided between the end of each clamping rod 320 away from the rod 2000 and the rotating base 100. The elastic member makes the clamping rod 320 tend to move toward the rod 2000, so that the clamping rod 320 clamps the rod 2000. In the scheme of this embodiment, the setting of multiple elastic members can also achieve a more uniform distribution of the clamping points of the guide sleeve assembly on the rod 2000 along the axial direction. The difference from the aforementioned embodiment is that the clamping force of each clamping rod 320 is controlled by the corresponding elastic member, which may be affected by the performance of the corresponding elastic member, and the clamping force of each clamping point is slightly different.

[0034] In a further embodiment, the elastic coefficient of the elastic member is less than a preset value, and the Swiss-type lathe guide sleeve assembly of the present invention further includes an adjustment structure, which is configured to increase the clamping force provided by the elastic member to the clamping rod 320 to clamp the bar 2000.

[0035] It is understandable that during the process of inserting the bar 2000 into the cone 310, the clamping rod 320 will be pushed so that the clamping rod 320 moves in a direction away from the axis of the bar 2000, thereby pushing the cone 310 to move and compress the elastic member. For the bar 2000 with a larger diameter, the radial movement distance of the clamping rod 320 is large, and the corresponding axial movement distance of the cone 310 is large, and the compression amount of the elastic member is large, and it is relatively difficult to compress, resulting in difficulty in inserting the bar 2000. In view of this problem, the present invention sets the elastic coefficient of the elastic member to be less than the preset value, that is, the elastic coefficient of the elastic member is small and relatively easy to compress, thereby making it easier for the bar 2000 to be inserted into the guide sleeve assembly during installation, and then the clamping force provided by the elastic member to the clamping rod 320 to clamp the bar 2000 is increased by adjusting the structure, so that the bar 2000 is reliably clamped during the processing, taking into account both installation and clamping, and is easy to install and reliably clamped.

[0036] The adjustment structure includes a centrifugal rack 420 and a gear 410. The baffle 340 is coaxially arranged with the telescopic sleeve 200 and spirally connected with the telescopic sleeve 200. The gear 410 is coaxially fixedly connected with the baffle 340. It can be understood that both the gear 410 and the baffle 340 are provided with a center hole for the rod 2000 to pass through; the centrifugal rack 420 is slidably arranged on the telescopic sleeve 200, and the centrifugal rack 420 is meshed with the gear 410. When the centrifugal rack 420 moves outward (in the direction of extending out of the telescopic sleeve 200), the baffle 340 is driven to rotate through the gear 410. The baffle 340 moves toward the direction close to the cone 310 under the action of the spiral transmission, thereby compressing the elastic member.

[0037] In the solution of this embodiment, when the spindle control mechanism drives the bar 2000, the telescopic sleeve 200 and the rotating base 100 to rotate, the centrifugal rack 420 rotates synchronously with the rotating sleeve, and the centrifugal rack 420 rotates during the centrifugal force increases and then moves outward. During the outward movement of the centrifugal rack 420, the gear 410 is driven to rotate relative to the telescopic sleeve 200, and the gear 410 drives the baffle 340 to rotate. Due to the spiral connection between the baffle 340 and the telescopic sleeve 200, the baffle 340 moves axially relative to the telescopic sleeve 200, compressing the elastic member, so that the cone 310 increases the pushing force on the clamping rod 320, thereby increasing the clamping force of the clamping rod 320 on the bar 2000. It should be supplemented that a limit thread 231 is provided on the inner periphery of the telescopic sleeve 200, and the outer periphery of the baffle 340 is spirally matched with the limit thread 231.

[0038] In a further embodiment, in order to make the rotation of the gear 410 more reliable, three centrifugal racks 420 are provided, and the three centrifugal racks 420 are evenly distributed along the circumferential direction and are all meshed with the gear 410. That is to say, in the scheme of this embodiment, the three centrifugal racks 420 enclose a triangle and are all meshed with the gear 410, and the three centrifugal racks 420 synchronously push the gear 410 to rotate when moving outward, so that the rotation of the gear 410 is more reliable and the force of the device is more balanced.

[0039] In a further embodiment, a counterweight block 422 is provided at the end of the centrifugal rack 420 to further facilitate the movement of the centrifugal rack 420 .

[0040] In a further embodiment, each centrifugal rack 420 is provided with a limit block 421, which is located on the back side of the teeth of the centrifugal rack 420 and is perpendicular to the centrifugal rack 420. By providing the limit block 421, the centrifugal rack 420 can be prevented from being separated from the telescopic sleeve 200.

[0041] Furthermore, an adjusting bolt 430 is threadedly connected to the telescopic sleeve 200 , and the adjusting bolt 430 corresponds to the centrifugal rack 420 one by one. The adjusting bolt 430 points to the corresponding limit block 421 and is perpendicular to the corresponding limit block 421 , thereby being able to stop the limit block 421 .

[0042] By setting the adjusting bolt 430 and the stop block 421, the moving distance of the centrifugal rack 420 can be adjusted, that is, the compression amount provided by the baffle 340 to the elastic member can be adjusted, and then the clamping force of the clamping rod 320 on the bar 2000 can be adjusted. For example, when clamping the bar 2000 of different materials, if the hardness of the bar 2000 is small and the anti-deformation ability is weak, the adjusting bolt 430 can be screwed to move the adjusting bolt 430 in the direction close to the stop block 421, and then the distance that the centrifugal rack 420 can move outward under the action of centrifugal force is reduced, the angle of rotation of the gear 410 and the baffle 340 is reduced, and the compression amount of the elastic member by the baffle 340 is correspondingly reduced. On the contrary, the adjusting bolt 430 can be moved in the direction away from the stop block 421, and then the distance that the centrifugal rack 420 can move outward under the action of centrifugal force is increased, the angle of rotation of the gear 410 and the baffle 340 is increased, and the compression amount of the elastic member by the baffle 340 is correspondingly increased.

[0043] Preferably, the telescopic sleeve 200 of the present invention is a three-section structure, specifically including a first sleeve 210, a second sleeve 220 and a third sleeve 230. The first sleeve 210, the second sleeve 220 and the third sleeve 230 are axially slidably sleeved, the first sleeve 210 is connected to the clamping member 1000, the third sleeve 230 is connected to the rotating base 100, the adjustment structure is arranged on the third sleeve 230, and the limiting thread 231 is arranged on the third sleeve 230. More specifically, the first sleeve 210 and the second sleeve 220 are provided with guide grooves, the second sleeve 220 and the third sleeve 230 are provided with guide blocks 221, the second sleeve 220 is coaxially slidably inserted in the first sleeve 210, and the guide block 221 on the second sleeve 220 is slidably connected with the guide groove on the first sleeve 210, the third sleeve 230 is coaxially slidably inserted in the second sleeve 220, and the guide block 221 on the third sleeve 230 is slidably connected with the guide groove on the second sleeve 220. When the bar 2000 needs to be pushed forward, the spindle control mechanism moves along the axis of the bar 2000, the telescopic sleeve 200 contracts, and the bar 2000 extends.

[0044] To facilitate structural arrangement, a connecting ring 110 is provided between the third sleeve 230 and the rotating base 100 , the third sleeve 230 is fixedly and detachably connected to the connecting ring 110 , and the connecting ring 110 is fixedly and detachably connected to the rotating base 100 .

[0045] In combination with the above embodiments, the use principle and working process of the present invention are as follows: The rotating base 100 in the guide sleeve assembly of the Swiss-type lathe of the present invention is installed at a set position of the Swiss-type lathe body, and the first telescopic shaft sleeve 200 is installed on the clamping member 1000.

[0046] Before the work starts, under the action of the elastic member, the baffle 340 abuts against the centrifugal rack 420, and the cone 310 abuts against the inner circumferential wall of the rotating base 100. Then one end of the bar 2000 to be processed passes through the guide sleeve assembly of the Swiss-type lathe of the present invention and is fixed on the clamping member 1000. The bar 2000 pushes the clamping rod 320, and the clamping rod 320 acts on the cone 310, so that the cone 310 moves to the left (close to the side of the clamping member 1000), compressing the elastic member, and the elastic member reacts to the cone 310 and provides an initial clamping force for the bar 2000 through the clamping rod 320, so that the two ends of the bar 2000 are fixed. The position of the adjusting bolt 430 can be set according to the material of the bar 2000, thereby determining the moving distance of the centrifugal rack 420.

[0047] Afterwards, the motor drives the clamping member 1000 to rotate, and the clamping member 1000 drives the rod 2000 and the guide sleeve assembly of the present invention to rotate. During the rotation of the guide sleeve assembly, the centrifugal rack 420 is driven to rotate synchronously through the third shaft sleeve 230. During the rotation of the centrifugal rack 420, it moves outward under the action of centrifugal force, thereby driving the gear 410 to rotate. The rotation of the gear 410 drives the baffle 340 to rotate and move in the direction close to the cone 310, thereby compressing the elastic member, providing further clamping force for the rod 2000, and ensuring that the rod 2000 is reliably clamped during the processing.

[0048] During the processing of the bar 2000, the movement of the spindle control mechanism is coordinated to continuously push the bar 2000 until the processing is completed. At the same time, the sealing ring 120 seals the gap between the bar 2000 and the cone 310 to prevent processing debris from entering the cone 310 and affecting the clamping reliability. After the processing is completed, the processed bar 2000 is removed and replaced with a new bar 2000.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A Swiss-type lathe guide sleeve assembly, characterized in that: The machine body is provided with a spindle control mechanism, which includes a motor and a clamping member, the clamping member is connected to the output shaft of the motor, the bar is installed on the clamping member, and the spindle control mechanism can move along a first direction, which is the axial direction of the bar; the guide sleeve assembly of the machine body includes: The rotating base rotates the machine body set on the Swiss-type lathe. A telescopic sleeve, one end of which is connected to the clamping member and the other end of which is connected to the rotating base. One end of the rod coaxially passes through the rotating base and the telescopic sleeve and is clamped on the clamping member. The clamping structure includes a clamping rod and an elastic member. The clamping rod is located at a rotating base. The clamping rod is evenly arranged in multiple groups along the circumferential direction, with multiple clamping rods in each group. The multiple clamping rods in each group are arranged at intervals along the axial direction of the rod. The clamping rod extends radially along the rod and can slide radially along the rod. The elastic member is used to provide clamping force for the clamping rod to clamp the rod.

2. The Swiss-type lathe guide sleeve assembly according to claim 1, characterized in that: A ball is arranged at one end of the clamping rod close to the bar material, and the ball is rotatably connected to the clamping rod.

3. The guide sleeve assembly of a Swiss-type lathe according to claim 1, characterized in that: The Swiss-type lathe guide sleeve assembly also includes a sealing ring, which is connected to the end surface of the rotating base away from the telescopic sleeve. The sealing ring is elastic, and a sliding seal is formed between the inner periphery of the sealing ring and the rod material.

4. The Swiss-type lathe guide sleeve assembly according to claim 1, characterized in that: A conical through hole is provided at the center of the rotating base, and a frustum is coaxially slidably arranged in the conical through hole. The taper of the frustum is the same as that of the conical through hole, and the large ends of both are close to the telescopic sleeve. A through hole is provided in the center of the frustum for passing the rod material; a baffle is provided in the telescopic sleeve, and an elastic member is provided between the baffle and the frustum, and the elastic member makes the frustum tend to move away from the baffle; the clamping rod is inserted into the frustum along the radial direction of the frustum, and the outer end face of the clamping rod is adapted to and abuts against the inner wall surface of the rotating base.

5. The Swiss-type lathe guide sleeve assembly according to claim 4, characterized in that: The elastic member is a compression spring.

6. The Swiss-type lathe guide sleeve assembly according to claim 4, characterized in that: The Swiss-type machine guide sleeve assembly also includes an adjustment structure, which includes a centrifugal rack and a gear. The baffle is coaxially arranged with the telescopic sleeve and is spirally connected with the telescopic sleeve. The gear is coaxially fixedly connected with the baffle. The centrifugal rack is slidably arranged on the telescopic shaft sleeve, and the centrifugal rack is meshed with the gear. When the centrifugal rack moves outward, the baffle is driven to rotate through the gear. The baffle moves toward the direction close to the cone under the action of the spiral transmission, thereby compressing the elastic member; the elastic coefficient of the elastic member is less than the preset value.

7. The Swiss-type lathe guide sleeve assembly according to claim 6, characterized in that: A counterweight is provided at the end of the centrifugal rack.

8. The Swiss-type lathe guide sleeve assembly according to claim 7, characterized in that: There are three centrifugal racks, which are evenly distributed along the circumferential direction and are all meshed with the gear.

9. The Swiss-type lathe guide sleeve assembly according to claim 8, characterized in that: A limit block is arranged on each centrifugal rack, and an adjusting bolt is threadedly connected to the telescopic sleeve. The number of the adjusting bolts is the same as the number of the centrifugal racks, and the adjusting bolts point to the corresponding limit block and are perpendicular to the limit block.

10. The Swiss-type lathe guide sleeve assembly according to claim 6, characterized in that: The telescopic sleeve is a three-section structure, specifically including a first sleeve, a second sleeve and a third sleeve. The first sleeve, the second sleeve and the third sleeve are axially slidably sleeved, the first sleeve is connected to the clamping member, the third sleeve is connected to the rotating base, and the centrifugal rack, gear and baffle are all arranged on the third sleeve.

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