CN218964820U - Vibration reduction structure for machine tool and machine tool - Google Patents

Abstract

The utility model discloses a vibration reduction structure for a machine tool and the machine tool, wherein the vibration reduction structure comprises: the crossbeam and braced skeleton, the crossbeam includes: the side face shell adopts a hollow structure, the end covers are buckled at two ends of the side face shell, and the supporting framework is arranged inside the cross beam. The beam structure adopted by the utility model is hollow, the mass of the beam is greatly reduced, and the supporting framework improves the strength and the deformation resistance of the beam, so that according to a kinetic energy formula, the larger the mass is, the larger the kinetic energy is, and the greater the damage to a machine tool is, therefore, the damage to the machine tool caused by the vibration of the beam is reduced by reducing the mass of the beam; meanwhile, the hollow structure can absorb vibration, so that the further propagation of the vibration of the cross beam is reduced, the overall amplitude of the machine tool is reduced, the problem that the vibration of a machine tool cutter can be caused by using a spring damping structure, the machining precision of the machine tool is reduced, and the machining yield of a product is lower is avoided.

Description

Vibration reduction structure for machine tool and machine tool

Technical Field

The utility model relates to the technical field of machinery, in particular to a vibration reduction structure for a machine tool and the machine tool.

Background

The utility model patent with application number 2021233930882 discloses a high-strength damping sheet metal shell of a numerical control machine tool, which comprises the following components in part by weight as shown in figure 1: the upper shell 1 and the lower shell 2 are arranged on the front side part of the upper shell 1, a protective component capable of transversely moving and having a protective effect is arranged on the front side part of the upper shell 1, the protective component consists of a protective cover 3 fixedly connected to the upper shell 1 and a movable door 4 capable of transversely moving, an observation port 5 capable of observing the inside of the numerical control machine tool and arranged in a transparent structure is arranged on the movable door 4, a damping structure with a damping buffer effect is arranged between the upper shell 1 and the lower shell 2, the upper shell 1 and the lower shell 2 are movably connected, an installation shell for installing a control panel of the numerical control machine tool is arranged on the upper shell 1 in an integrated manner, an electric control cabinet 6 is arranged on the rear side part of the upper shell 1, the upper shell 1 and the lower shell 2 are integrally formed, a damping structure is arranged between the upper shell 1 and the lower shell 2, the damping structure consists of a plurality of guide posts 7 arranged at the top of the lower shell 2 and damping springs 8 sleeved on the guide posts 7, and the plurality of the guide posts 7 are sequentially distributed at the top of the upper shell 1 at intervals.

2021233930882 are guide posts and damping springs, and the damping structure cannot be applied to tools and carriers thereof, otherwise, the tool of the machine tool can shake, the machining precision of the machine tool is reduced, and the machining yield of products is low.

The utility model patent application number 2019213845644 discloses a beam column connecting structure for a machine tool, as shown in fig. 2, comprising: the cross beam 101, recess 201 and collection box 301, first fixed orifices 104 have evenly been seted up to the cross beam 101 outer wall, two rubber pads 106 have been bonded to cross beam 101 bottom both sides, and rubber pad 106 can be for connection structure carries out the shock attenuation, two rubber pad 106 bottom has bonded first stand 102 and second stand 103 in proper order, and first stand 102 and second stand 103 current situation is different, and multiple stand of being convenient for is connected fixedly with cross beam 101, second fixed orifices 105 have evenly been seted up in first stand 102 and the second stand 103, through bolt and second fixed orifices 105 cooperation threaded fastening in the first fixed orifices 104 to carry out fixed connection to cross beam 101, first stand 102 and second stand 103 are whole, rubber pad 106, first stand 102 and second stand 103 top have evenly been seted up recess 201, the recess 201 is inlayed and is had spacing round bar 206, spacing round bar 206 outer wall slip cap has two fixed collars 204, and spacing round bar 206 plays the effect of supporting for fixed collar 204, two reset spring 205 has been welded between the fixed collar 204, and 205 can play the shock attenuation structure again for connecting.

2019213845644 is provided with two layers of shock absorption, namely a rubber pad and a return spring, and aims to prevent the contact surface between the cross beam and the upright post and the bolt for fixing from being damaged due to lack of the shock absorption structure, thereby improving the practicability of the cross beam and upright post connecting structure; but obviously, the vibration-reducing structure can also cause the vibration of a tool of the machine tool, reduce the machining precision of the machine tool and lead to lower machining yield of products.

It can be seen that the multi-working table structure of the existing machine tool for processing the same type of workpiece has yet to be improved and developed.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present utility model aims to provide a vibration damping structure for a machine tool and a machine tool, which aims to solve the problems that the vibration damping structure in the prior art can cause vibration of a tool of the machine tool, reduce the machining precision of the machine tool, and result in lower machining yield of products.

The technical scheme of the utility model is as follows:

a vibration damping structure for a machine tool, comprising: the crossbeam and braced skeleton, the crossbeam includes: the side face shell adopts a hollow structure, the end covers are buckled at two ends of the side face shell, and the supporting framework is arranged inside the cross beam.

The effect of above-mentioned scheme lies in: the beam structure adopted by the utility model is hollow, compared with a solid structure, the mass of the beam is greatly reduced, and the supporting framework can improve the strength and the deformation resistance of the beam, so that according to a kinetic energy formula, the larger the mass is, the larger the kinetic energy is, and the damage to a machine tool is larger, therefore, the damage to the machine tool caused by the vibration of the beam is reduced by reducing the mass of the beam; meanwhile, the hollow structure can absorb vibration, so that the further propagation of the vibration of the cross beam is reduced, the overall amplitude of the machine tool is reduced, the problem that the vibration of a machine tool cutter can be caused by using a spring damping structure, the machining precision of the machine tool is reduced, and the machining yield of a product is lower is avoided.

In a further preferred aspect, the vibration damping structure for a machine tool further includes: the reinforcing rib is provided with a first inserting protrusion and a second inserting protrusion; the side surface shell is provided with a plug groove, and the first plug protrusion and the second plug protrusion are respectively inserted into the plug grooves on two different side surfaces of the side surface shell.

The effect of above-mentioned scheme lies in: because the first inserting protrusion and the second inserting protrusion are respectively inserted into the inserting grooves on two different sides of the side surface shell, the matching structure of the inserting protrusions and the inserting grooves improves the strength of the corners of the side surface shell on one hand and the connection strength between the two different sides of the side surface shell on the other hand; if the cross beam is driven by the triaxial transfer mechanism to move, the reinforcing ribs can effectively improve the motion consistency of each component of the cross beam and ensure the integrity of the cross beam.

In a further preferred scheme, the reinforcing rib is provided with a first threaded hole, the end cover is provided with a second threaded hole, and the end cover is detachably connected together through the first threaded hole, the second threaded hole and the threaded connecting piece.

The effect of above-mentioned scheme lies in: the reinforcing ribs not only play a role in supporting the corners of the side surface shells, but also connect the end covers and the side surface shells (according to the number of the side plates of the side surface shells and possibly different side plates of the side surface shells) into a whole, so that the overall strength of the cross beam is obviously improved; and when the cross beam is driven by the triaxial transfer mechanism to move, the connection relation between the reinforcing ribs and the end cover can further improve the motion consistency of each component part of the cross beam, and the integrity of the cross beam is obviously improved.

In a further preferred embodiment, the support skeleton comprises: the transverse framework and the longitudinal framework are respectively inserted and connected to the front side surface and the rear side surface of the cross beam, and the two ends of the longitudinal framework are respectively inserted and connected to the upper side surface and the lower side surface of the cross beam.

The effect of above-mentioned scheme lies in: the longitudinal skeleton can improve the strength between the upper side surface and the lower side surface of the cross beam, the transverse skeleton can improve the strength between the front side surface and the rear side surface of the cross beam, and the longitudinal skeleton and the transverse skeleton are crossed, so that the overall strength of the cross beam is greatly improved; moreover, due to the existence of the supporting framework, the integrity of the cross beam is further improved, so that the supporting framework further improves the motion consistency of each component part when the cross beam moves.

In a further preferred embodiment, the support skeleton further comprises: and the reinforcing framework is perpendicular to the longitudinal framework and the transverse framework and parallel to the end cover.

The effect of above-mentioned scheme lies in: the strength of the cross beam is further enhanced by the arrangement of the reinforcing framework, and the cross beam is crossed with the longitudinal framework and the transverse framework, so that the overall strength of the cross beam and the motion consistency of each component part during movement are greatly improved.

In a further preferred scheme, damping holes are formed in the longitudinal framework, the transverse framework and the reinforcing framework.

The effect of above-mentioned scheme lies in: the shock attenuation hole can reduce the weight of supporting the skeleton on the one hand, and the vibrations that the crossbeam transmitted can be absorbed to the other hand for vertical skeleton, horizontal skeleton and enhancement skeleton improve the shock-absorbing capacity of whole shock-absorbing structure when improving the crossbeam performance.

In a further preferred scheme, the cross beam is a movable beam and is used for driving the X-axis transfer mechanism and the Z-axis transfer mechanism to move under the drive of the Y-axis transfer mechanism; the Z-axis transfer mechanisms are arranged in a plurality, the Z-axis transfer mechanisms are distributed on the front side and the rear side of the cross beam, and at least two Z-axis transfer mechanisms positioned on the same side are connected through a connecting frame so as to be driven by the same X-axis transfer mechanism.

The effect of above-mentioned scheme lies in: the movable beam structure driven by the Y-axis transfer mechanism and the multi-Z-axis transfer mechanism suitable for multiple stations reduce the production cost of workpieces while improving the machining efficiency of a machine tool, and the reinforcing ribs and/or the supporting frameworks ensure the motion consistency of each component part when the cross beam moves, so that the machining consistency and the machining yield of the workpieces on each workbench are improved.

In a further preferred embodiment, the connection frame includes: the device comprises a hollow frame and at least one longitudinal supporting plate, wherein the longitudinal supporting plate adopts a hollow structure; the hollow frame is faced to one side of the longitudinal support plate and is provided with a connecting groove, one side of the longitudinal support plate is faced to one side of the hollow frame and is provided with a connecting protrusion, and the connecting groove is matched with the connecting protrusion.

The effect of above-mentioned scheme lies in: the hollow frame and the longitudinal support plate are both of hollow structures, the mass is smaller, the Z-axis transfer mechanism is guaranteed to be connected together, vibration is not larger due to the larger mass, and vibration force transmitted by the Z-axis transfer mechanism and the cross beam is reduced due to the small mass and vibration absorption characteristic of the hollow structure, so that the vibration resistance of the machine tool is improved; meanwhile, the connecting grooves are matched with the connecting protrusions to form a mortise-tenon structure, so that the hollow frame and the longitudinal supporting plates are tightly combined together, and the overall strength of the connecting frame is guaranteed.

In a further preferred embodiment, the side housing includes: the device comprises at least two side plates, wherein a first splicing protrusion and a first splicing groove are arranged on the first side of each side plate, a second splicing protrusion and a second splicing groove are arranged on the second side of each side plate, and the first splicing protrusion and the first splicing groove are respectively used for being matched with the second splicing groove and the second splicing protrusion of the adjacent side plate; the two ends of the side plate are provided with a third splicing bulge and a third splicing groove, the edge of the end cover is provided with a fourth splicing bulge and a fourth splicing groove along the edge, and the fourth splicing bulge and the fourth splicing groove are respectively used for being matched with the third splicing groove and the third splicing bulge on the side plate; the adjacent side plates and the end covers are welded together after being spliced.

The effect of above-mentioned scheme lies in: the screw is connected by adopting the screw, the screw is gradually loosened due to the absorption of digestive vibration by the side plate, and the processing accident is easily caused by the falling of the screw; the supporting framework is stably limited in the cross beam, so that the position of the supporting framework is not changed, and the stably limited supporting framework firmly supports the cross beam; on the basis of improving the damping performance of the whole damping structure, the deformation resistance of the cross beam is further improved.

A machine tool comprising a vibration damping structure for a machine tool as described above. Since the machine tool includes all the technical features of the vibration damping structure for the machine tool, the machine tool also includes all the technical effects of the vibration damping structure for the machine tool, and the description thereof is omitted.

Compared with the prior art, the vibration reduction structure for the machine tool provided by the utility model comprises the following components: the crossbeam and braced skeleton, the crossbeam includes: the side face shell adopts a hollow structure, the end covers are buckled at two ends of the side face shell, and the supporting framework is arranged inside the cross beam. The beam structure adopted by the utility model is hollow, compared with a solid structure, the mass of the beam is greatly reduced, and the supporting framework can improve the strength and the deformation resistance of the beam, so that according to a kinetic energy formula, the larger the mass is, the larger the kinetic energy is, and the damage to a machine tool is larger, therefore, the damage to the machine tool caused by the vibration of the beam is reduced by reducing the mass of the beam; meanwhile, the hollow structure can absorb vibration, so that the further propagation of the vibration of the cross beam is reduced, the overall amplitude of the machine tool is reduced, the problem that the vibration of a machine tool cutter can be caused by using a spring damping structure, the machining precision of the machine tool is reduced, and the machining yield of a product is lower is avoided.

Drawings

Fig. 1 is a schematic structural view of a sheet metal shell of a high-strength damping numerical control machine tool published by 2021233930882.

Fig. 2 is a schematic structural diagram of a beam-column connection structure for a machine tool disclosed in 2019213845644.

Fig. 3 is a schematic structural view of a vibration damping structure for a machine tool in a preferred embodiment of the present utility model.

FIG. 4 is a schematic view showing the mating structure of the first L-shaped side plate and the second L-shaped side plate used in the vibration damping structure for a machine tool according to the further preferred embodiment of the present utility model.

Fig. 5 is an enlarged view of a portion a in fig. 4.

Fig. 6 is an enlarged view of a portion B in fig. 4.

FIG. 7 is a schematic view showing the mating structure of the end cap and the side housing for the vibration damping structure for a machine tool according to the further preferred embodiment of the present utility model.

FIG. 8 is a schematic diagram showing the connection relationship of the transverse skeleton, the longitudinal skeleton and the reinforcing skeleton used for the vibration damping structure of the machine tool according to the further preferred embodiment of the present utility model.

Fig. 9 is a schematic diagram showing the positional relationship between the vibration damping structure for a machine tool and the three-axis transfer mechanism in a multi-station machine tool according to a further preferred embodiment of the present utility model.

FIG. 10 is a schematic view showing the connection relationship between the hollow frame and the longitudinal connecting plate in the connecting frame for the vibration damping structure of the machine tool according to the further preferred embodiment of the present utility model.

Detailed Description

The present utility model provides a vibration damping structure for a machine tool and a machine tool, and for the purpose, technical solution and effect of the present utility model to be more clear and clarified, the present utility model will be further described in detail below with reference to the accompanying drawings and examples (but the examples are only for explanation and not for limitation of the scope of the present utility model).

To solve the problem that the prior art uses the spring to absorb shockCausing the problem of tool chatter of a machine tool, the present utility model provides a vibration reducing structure for a machine tool, as shown in fig. 3, comprising: the cross beam 100 and the supporting framework 200 are different from the prior art in that the cross beam 100 in the utility model is hollow, the mass of the cross beam 100 is greatly reduced, and the energy according to the kinetic energy formula E _k ＝mv ² It is known that the greater the speed of movement, the greater the kinetic energy of an object of equal mass; the greater the mass of an object moving at the same speed, the greater the kinetic energy it has. The kinetic energy of the unordered vibration of the beam 100, the tool, etc. is useless for the machine tool, and obviously the smaller the kinetic energy is, the better, so the utility model effectively dampens the vibration by reducing the mass of the beam 100. In addition, as long as the surrounding of the vibrating object is not vacuum, other substance forms are necessarily existed, the vibration of the object can generate disturbance to other substances, the disturbance can bring about energy transmission, and the energy transmission is called mechanical wave; because the cross beam 100 in the utility model adopts a hollow structure, air exists in the interior and the exterior, when the cross beam 100 vibrates, the air can be transmitted to the interior and the exterior, so that the energy of vibration is consumed, and the vibration reduction effect is further improved. In addition, the present utility model further provides a supporting frame 200 inside the cross beam 100 to improve the deformation resistance of the cross beam 100 when hanging objects in five directions, front, rear, left, right, upper and lower. Therefore, the vibration reduction structure for the machine tool disclosed by the utility model avoids the problem that the vibration reduction structure of the spring can cause vibration of a tool of the machine tool, reduce the machining precision of the machine tool and cause lower machining yield of products. In particular implementations, the beam 100 includes: the side surface shell 110 and the end covers, the side surface shell 110 adopts a hollow structure, and the end covers are buckled at two ends of the side surface shell 110.

In an embodiment of the present utility model, as shown in fig. 3, the side housing 110 includes: at least two side plates (210 and 220 are included in the examples of fig. 3 and 4), a first splicing protrusion and a first splicing groove (hereinafter, referred to in detail) are disposed on a first side of the side plates, and a second splicing protrusion and a second splicing groove are disposed on a second side of the side plates, as shown in fig. 4, it is understood that, although the present utility model only illustrates a structure in which two L-shaped side plates are spliced to form the side housing 110, in practical implementation, one L-shaped side plate and two in-line side plates are adopted, and four in-line side plates, even two in-line side plates and two in-line side plates, may be adopted, and those skilled in the art may adaptively select and adjust the structure according to practical situations (such as the size of the beam 100, the parameters of materials, etc.), and the present utility model cannot list the selection and adjustment schemes fall within the scope of the present utility model. Similarly, if the cross member 100 is not rectangular, the shape and number of side plates will be adapted accordingly.

When assembling, the first splicing protrusion and the first splicing groove are respectively used for adapting to the second splicing groove and the second splicing protrusion of the adjacent side plates, for example, the utility model adopts the composition structure of the two L-shaped side plates shown in fig. 4 to 6, when assembling, at the splicing position of one end, the first splicing protrusion a (denoted by reference numeral 211 in fig. 5) of the first L-shaped side plate 111 will abut against the second splicing groove B (denoted by reference numeral 221 in fig. 5) of the second L-shaped side plate 112, and the first splicing groove C (denoted by reference numeral 212 in fig. 5) of the first L-shaped side plate 111 will abut against the second splicing protrusion D (denoted by reference numeral 222 in fig. 5) of the second L-shaped side plate 112; while at the splice of the other end, the second splice projection E (denoted by reference numeral 213 in fig. 6) of the first L-shaped side plate 111 will abut the first splice groove F (denoted by reference numeral 223 in fig. 6) of the second L-shaped side plate 112, and the second splice groove G (denoted by reference numeral 214 in fig. 6) of the first L-shaped side plate 111 will abut the first splice projection H (denoted by reference numeral 224 in fig. 6) of the second L-shaped side plate 112; the two L-shaped side plates are tightly connected together under the condition of matching with welding modes such as ultrasonic waves and the like, so that the two L-shaped side plates form a mutually buckled accurate positioning and limiting structure, and the stability and the firmness are excellent.

Similar structure is also applied to the side plate and the end cover, specifically, the two ends of the side plate are both provided with a third splicing protrusion 230 and a third splicing groove 240, as shown in fig. 7, the end cover is provided with a fourth splicing protrusion 310 and a fourth splicing groove 320 along the edge, and the fourth splicing protrusion 310 and the fourth splicing groove 320 are respectively used for adapting to the third splicing groove 240 and the third splicing protrusion 230 on the side plate. The end cover is generally rectangular (adapted to the overall design of the cross beam 100), so the four sides of the end cover are provided with the fourth splicing protrusion 310 and the fourth splicing groove 320, and the side shell 110 is formed by splicing at least two side plates, so the end cover is buckled with at least two side plates at the same time, that is, the end cover is used as a medium to reinforce the connection stability of the two side plates, and simultaneously provides the support at two ends for the side shell 110, the support effect is equal to that of the support framework 200 in the cross beam 100, and the side shell is matched with the support framework 200 to play a reinforcing role.

Compared with a threaded connection structure, the screw is connected by adopting the screw, the screw is gradually loosened due to the absorption of digestive vibration by the side plate, and the processing accident is easily caused by the falling of the screw; the supporting framework 200 is stably limited in the cross beam 100, so that the position of the supporting framework 200 is not changed, and the stably limited supporting framework 200 firmly supports the cross beam 100; on the basis of improving the shock absorbing performance of the whole shock absorbing structure, the deformation resistance of the cross beam 100 is further improved.

In a further preferred embodiment of the present utility model, the vibration damping structure for a machine tool further includes: the reinforcing rib 300 is provided with a first inserting protrusion and a second inserting protrusion, wherein the first inserting protrusion and the second inserting protrusion are arranged on the reinforcing rib 300; the side housing 110 is provided with a plugging slot, and the first plugging protrusion and the second plugging protrusion are respectively inserted into the plugging slots on two different sides of the side housing 110.

In a specific implementation, the number of the reinforcing ribs 300 is eight (the number of the reinforcing ribs 300 can be adaptively adjusted if the shape of the cross beam 100 is changed on the premise that the cross beam 100 is rectangular, and even if the cross beam 100 is also rectangular, the number of the reinforcing ribs 300 can be adjusted according to the shape, for example, the number of the reinforcing ribs 300 is only two if the reinforcing ribs 300 are in an X shape and are adapted to two ends of the cross beam 100), and the reinforcing ribs are divided into two groups, and each group is four to be adapted to two ends of the cross beam 100; the assembly timing may be arranged after the entire frame of the cross beam 100 is completed, i.e., after the two (or more) side panels are snapped to form the side shell 110. The effect of this arrangement is that: because the first inserting protrusion and the second inserting protrusion are respectively inserted into the inserting grooves on two different sides of the side surface shell 110, the matching structure of the inserting protrusions and the inserting grooves improves the strength of the corner of the side surface shell 110 on one hand and the connection strength between the two different sides of the side surface shell 110 on the other hand; if the beam 100 needs to move under the driving of the three-axis transfer mechanism, the stiffener 300 can effectively improve the motion consistency of each component of the beam 100, and ensure the integrity of the beam 100.

Further, the reinforcing rib 300 is provided with a first threaded hole, the end cover is provided with a second threaded hole, and the end cover is detachably connected together through the first threaded hole, the second threaded hole and the threaded connecting piece. The reinforcing ribs 300 not only play a role in supporting the corners of the side shells 110, but also connect the end caps and the side shells 110 (according to the number of the side plates of the side shells 110 and possibly different side plates of the side shells 110) into a whole, so that the overall strength of the cross beam 100 is obviously improved; and when the beam 100 is driven by the triaxial transfer mechanism to move, the connection relation between the reinforcing ribs 300 and the end cover can further improve the motion consistency of each component part of the beam 100, and the integrity of the beam 100 is obviously improved.

According to another aspect of the present utility model, the support frame 200 includes: the transverse skeleton 210 (parallel to the upper and lower surfaces of the side housing 110) and the longitudinal skeleton 220 (parallel to the front and rear surfaces of the side housing 110), both ends of the transverse skeleton 210 are respectively inserted and connected to the front and rear side surfaces of the cross beam 100, and both ends of the longitudinal skeleton 220 are respectively inserted and connected to the upper and lower side surfaces of the cross beam 100. The longitudinal skeleton 220 can improve the strength between the upper and lower sides of the beam 100, the transverse skeleton 210 can improve the strength between the front and rear sides of the beam 100, and the longitudinal skeleton 220 and the transverse skeleton 210 are crossed, so that the overall strength of the beam 100 is greatly improved; moreover, the integrity of the cross beam 100 tends to be further enhanced by the presence of the support frame 200, so that the support frame 200 will further enhance the consistency of movement of the various components of the cross beam 100 as it moves.

Further, the support frame 200 further includes: reinforcing cage 230 (parallel to the end caps), as shown in fig. 8, the reinforcing cage 230 is perpendicular to the longitudinal cage 220 and the transverse cage 210 and parallel to the end caps. The reinforcement frame 230 further reinforces the strength of the cross beam 100, and since it intersects both the longitudinal frames 220 and the transverse frames 210, the overall strength of the cross beam 100 and the consistency of movement of the various components during movement are greatly improved.

In the assembly, it is preferable that the support frame 200 is assembled, that is, the transverse frame 210, the longitudinal frame 220 and the reinforcing frame 230 are assembled into a whole (welded by ultrasonic wave after assembly), then the support frame 200 is connected to any one of the two L-shaped side plates, the other one of the two L-shaped side plates is assembled, and then the welding of each connecting point is performed from the outside; the assembly of the supporting frame 200 and the cross member 100 is completed; the assembly of the reinforcing ribs 300 can be performed before or after welding, preferably the former, so as to reduce one-time welding process and improve production efficiency; the present utility model is not limited thereto.

Preferably, the longitudinal frames 220, the transverse frames 210 and the reinforcing frames 230 are all provided with damping holes. The shock absorbing holes can reduce the weight of the supporting frame 200 on the one hand and absorb the shock transferred from the cross beam 100 on the other hand, so that the longitudinal frames 220, the transverse frames 210 and the reinforcing frames 230 improve the shock absorbing capacity of the whole shock absorbing structure while improving the performance of the cross beam 100.

According to another aspect of the present utility model, the cross beam 100 is a movable beam, and is used to drive the X-axis transfer mechanism 020 and the Z-axis transfer mechanism 030 to move under the driving of the Y-axis transfer mechanism 010, as shown in fig. 9; the plurality of Z-axis transfer mechanisms 030 are provided, the plurality of Z-axis transfer mechanisms 030 are distributed on the front and rear side surfaces of the cross beam 100, and at least two Z-axis transfer mechanisms 030 located on the same side are connected by a connecting frame 400 so as to be driven by the same X-axis transfer mechanism 020. The movable beam structure driven by the Y-axis transfer mechanism 010 and the multi-Z-axis transfer mechanism 030 suitable for multiple stations reduce the production cost of workpieces while improving the machining efficiency of a machine tool, and the reinforcing ribs 300 and/or the supporting framework 200 ensure the motion consistency of each component part when the cross beam 100 moves, so that the consistency and the yield of workpiece machining on each workbench are improved.

Further, as shown in fig. 10, the connection frame 400 includes: the hollow frame 410 and at least one longitudinal support plate 420 (in the case that the length of the connecting frame 400 is larger or other requirements for improving the strength of the connecting frame 400 are met, a person skilled in the art can adjust the structure of the connecting frame 400 according to practical situations, such as adding a transverse support plate, etc., fig. 10 shows the connection relationship between the transverse support plate and the longitudinal support plate 420 and the hollow frame 410), and the longitudinal support plate 420 adopts a hollow structure; the hollow frame 410 is provided with a connecting groove facing to one side of the longitudinal support plate 420, one side of the longitudinal support plate 420 facing to the hollow frame 410 is provided with a connecting protrusion, and the connecting groove is matched with the connecting protrusion. The hollow frame 410 and the longitudinal support plate 420 are both in hollow structures, so that the mass is smaller, the Z-axis transfer mechanism 030 is guaranteed to be connected together, vibration is not larger due to the larger mass, and the vibration force transmitted by the Z-axis transfer mechanism 030 and the cross beam 100 is reduced due to the small mass and the vibration absorption characteristic of the hollow structures, so that the vibration resistance of the machine tool is improved; meanwhile, the coupling groove and the coupling protrusion cooperate to form a mortise and tenon structure (and then can be reinforced by ultrasonic welding or the like), so that the hollow frame 410 and the longitudinal support plate 420 are tightly combined together, and the overall strength of the coupling frame 400 is ensured. In a specific implementation, when the Z-axis transfer mechanisms 030 are symmetrically arranged, at least four Z-axis transfer mechanisms 030 symmetrically distributed on both sides of the cross beam 100 share one X-axis transfer mechanism 020, two connection frames 400 are provided, and both the two connection frames 400 are connected to the X-axis transfer mechanism 020 through connection plates.

The utility model also provides a machine tool, comprising the vibration reduction structure for the machine tool.

It should be noted that the above-mentioned embodiments illustrate rather than limit the utility model, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The utility model may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names. The steps in the above embodiments should not be construed as limiting the order of execution unless specifically stated.

Claims (10)

1. A vibration damping structure for a machine tool, comprising: the crossbeam, its characterized in that still includes: support skeleton, the crossbeam includes: the side face shell adopts a hollow structure, the end covers are buckled at two ends of the side face shell, and the supporting framework is arranged inside the cross beam.

2. The vibration reducing structure for a machine tool according to claim 1, further comprising: the reinforcing rib is provided with a first inserting protrusion and a second inserting protrusion; the side surface shell is provided with a plug groove, and the first plug protrusion and the second plug protrusion are respectively inserted into the plug grooves on two different side surfaces of the side surface shell.

3. The vibration reduction structure for a machine tool according to claim 2, wherein the reinforcing rib is provided with a first threaded hole, the end cover is provided with a second threaded hole, and the end covers are detachably connected together through the first threaded hole, the second threaded hole and the threaded connecting piece.

4. The vibration reducing structure for a machine tool according to claim 1, wherein the support frame includes: the transverse framework and the longitudinal framework are respectively inserted and connected to the front side surface and the rear side surface of the cross beam, and the two ends of the longitudinal framework are respectively inserted and connected to the upper side surface and the lower side surface of the cross beam.

5. The vibration reduction structure for a machine tool according to claim 4, wherein the support frame further comprises: and the reinforcing framework is perpendicular to the longitudinal framework and the transverse framework and parallel to the end cover.

6. The vibration reducing structure for a machine tool according to claim 5, wherein the longitudinal frames, the transverse frames and the reinforcing frames are provided with vibration reducing holes.

7. The vibration reducing structure for a machine tool according to any one of claims 2 to 6, wherein the cross beam is a movable beam for driving the X-axis transfer mechanism and the Z-axis transfer mechanism to move under the drive of the Y-axis transfer mechanism; the Z-axis transfer mechanisms are arranged in a plurality, the Z-axis transfer mechanisms are distributed on the front side and the rear side of the cross beam, and at least two Z-axis transfer mechanisms positioned on the same side are connected through a connecting frame so as to be driven by the same X-axis transfer mechanism.

8. The vibration reducing structure for a machine tool according to claim 7, wherein the link includes: the device comprises a hollow frame and at least one longitudinal supporting plate, wherein the longitudinal supporting plate adopts a hollow structure; the hollow frame is faced to one side of the longitudinal support plate and is provided with a connecting groove, one side of the longitudinal support plate is faced to one side of the hollow frame and is provided with a connecting protrusion, and the connecting groove is matched with the connecting protrusion.

9. The vibration reducing structure for a machine tool according to claim 1, wherein the side housing includes: the device comprises at least two side plates, wherein a first splicing protrusion and a first splicing groove are arranged on the first side of each side plate, a second splicing protrusion and a second splicing groove are arranged on the second side of each side plate, and the first splicing protrusion and the first splicing groove are respectively used for being matched with the second splicing groove and the second splicing protrusion of the adjacent side plate; the two ends of the side plate are provided with a third splicing bulge and a third splicing groove, the edge of the end cover is provided with a fourth splicing bulge and a fourth splicing groove along the edge, and the fourth splicing bulge and the fourth splicing groove are respectively used for being matched with the third splicing groove and the third splicing bulge on the side plate; the adjacent side plates and the end covers are welded together after being spliced.

10. A machine tool comprising a vibration damping structure for a machine tool according to any one of claims 1 to 9.

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