Exchange workbench device and machining center

Abstract

The invention relates to an exchange workbench device and a machining center. The exchange workbench device comprises a base and an acting piece, and the acting piece is used for driving an exchange arm to rotate and ascend and descend; the composite motion component comprises a driving connecting piece and a conversion assembly; the driving connecting piece is connected with the driving piece, and the driving connecting piece is used for transmitting the lifting linear motion output by the driving piece to the conversion assembly; the conversion assembly comprises a force applying piece and a forced piece which are arranged in a mutually nested mode, the force applying piece is connected with the driving connecting piece, the forced piece is connected with the acting piece, and the force applying piece and the forced piece are matched to convert lifting linear motion transmitted by the driving connecting piece into rotating motion; at least part of the force application piece is located in the forced piece, or at least part of the forced piece is located in the force application piece. According to the exchange workbench device, the problem that in the prior art, an exchange workbench device is large in size can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of machine tools, and in particular to an exchange workbench device and a machining center. Background Art

[0002] Most machine tools today only have one workbench. For machining small parts, the time required to install the workpiece is relatively short and the impact is relatively small. However, when machining larger workpieces, the time required to install the workpiece is relatively long. If there is still only one workbench in this case, it will inevitably have a greater impact and slow down work efficiency.

[0003] In order to improve work efficiency, a double worktable structure with rotatable exchange is currently adopted, that is, when one worktable is used for machine tool processing, the other worktable is used to install and fix new workpieces; in the existing patent CN217727867U named a servo-driven high-precision positioning exchange worktable, the hydraulic principle is used to control the movement of the moving block. When moving up, the upper end face teeth and the lower end face teeth are separated, so that the rotating shaft can drive the worktable panel to rotate, and when moving down, the upper end face teeth and the lower end face teeth are engaged to fix the worktable panel. The panel exchange speed is fast, which improves production efficiency and reduces the impact of the time-consuming problem of fixing workpieces on large machine tools. However, the exchange worktable device is often large in size and difficult to fit the installation structure of various machine tools, and has poor versatility. Summary of the invention

[0004] The main purpose of the present invention is to provide an exchange worktable device and a machining center, which solves the problem that the exchange worktable device in the prior art is large in size and difficult to fit into the installation structure of various machine tools.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A first aspect: An exchange workbench device comprises a base and an action member, wherein the action member is used to drive the exchange arm to rotate and lift; and further comprises a composite motion component, wherein the composite motion component comprises a driving connection member and a conversion assembly;

[0007] The driving connecting member is connected to the driving member, and the driving connecting member is used to transmit the lifting linear motion output by the driving member to the conversion assembly;

[0008] The conversion assembly includes a force-applying member and a forced member which are nested with each other, the force-applying member is connected to the driving connecting member, the forced member is connected to the acting member, and the force-applying member and the forced member cooperate to convert the lifting linear motion transmitted by the driving connecting member into a rotational motion;

[0009] The force-applying member is at least partially located in the forced member, or the forced member is at least partially located in the force-applying member.

[0010] In a preferred embodiment of the present invention, the force-applying member comprises a force-applying column, one end of which is connected to the driving connecting member, a spiral guide groove is provided on the circumference of the body of the force-applying column, and the spiral guide groove is arranged to surround upwards;

[0011] The forced member includes a forced sleeve, which is connected to the acting member. The force-applying column is arranged in the forced sleeve. A positioning column is arranged inside the tube of the forced sleeve. The column axis of the positioning column is perpendicular to the tube axis of the forced sleeve. At least part of the positioning column is slidably or rollingly arranged in the spiral guide groove.

[0012] In a preferred embodiment of the present invention, the composite motion component also includes a lifting sleeve arranged between the base and the conversion assembly and a lifting base fixed to the lower end of the lifting sleeve, the lifting sleeve is sleeved on the outside of the conversion assembly, the lifting base is arranged below the conversion assembly, and the lifting sleeve and / or the lifting base are used to drive the conversion assembly to rise and fall.

[0013] In a preferred embodiment of the present invention, the conversion assembly further comprises a load-bearing bearing group, and the load-bearing bearing group is arranged between the lifting sleeve and the forced sleeve, and is used to support the forced sleeve;

[0014] The forced sleeve is rotatably arranged with the lifting sleeve through the load-bearing bearing group.

[0015] In a preferred embodiment of the present invention, the load-bearing bearing group includes a plurality of load-bearing bearings which are coaxial and arranged parallel to each other;

[0016] The load-bearing bearings each include a fixed outer ring and a rotating inner ring, wherein the fixed outer ring is fixedly arranged on the circumference of the inner cylinder of the lifting sleeve, and the rotating inner ring is fixedly arranged on the outer circumference of the cylinder of the forced sleeve;

[0017] Wherein, a stopper is provided on the upper portion of the lifting sleeve, and the load-bearing bearing located below the load-bearing bearing group is supported on the stopper.

[0018] In a preferred embodiment of the present invention, the driving member further comprises a first telescopic driving member and a second telescopic driving member.

[0019] The first telescopic driving member includes a first piston and a first piston rod, and the first piston rod is fixedly connected to the lifting base;

[0020] The second telescopic driving member includes a second piston and a second piston rod, the first piston rod forms a cylinder body, the second piston is located in the cylinder body of the first piston rod, and the second piston rod is connected to the driving connecting member.

[0021] In a preferred embodiment of the present invention, the force-applying member comprises a force-applying sleeve, a positioning column is provided on the inner circumference of the force-applying sleeve, and the axis of the positioning column is perpendicular to the axis of the force-applying sleeve;

[0022] The forced member comprises a forced column, and the forced column is arranged in the force-applying sleeve; a spiral guide groove arranged to surround upward is provided on the circumference of the body of the forced column;

[0023] At least a portion of the positioning post is slidably or rollingly disposed in the spiral guide groove.

[0024] In a preferred embodiment of the present invention, the force-applying member includes a force-applying sleeve, a positioning column is provided on the inner circumference of the tube of the force-applying sleeve, and the column axis of the positioning column is perpendicular to the column axis of the force-applying sleeve; the forced member includes a forced column, and the forced column is arranged in the force-applying sleeve; a spiral guide groove which is arranged upward and surrounds the body of the forced column is provided on the circumference of the body of the forced column; at least part of the positioning column is slidably or rollingly arranged in the spiral guide groove; or, the force-applying member includes a force-applying sleeve, a spiral guide groove which is arranged upward and surrounds the body of the force-applying sleeve is provided on the inner circumference of the tube of the force-applying sleeve; the forced member includes a forced column, a positioning column is provided on the body of the forced column, and the column axis of the positioning column is perpendicular to the column axis of the forced column; at least part of the positioning column is slidably or rollingly arranged in the spiral guide groove.

[0025] In a preferred embodiment of the present invention, a guide member is radially arranged on the outer circumference of the force-applying member, a guide groove is axially arranged on the circumference of the base, an avoidance groove is axially arranged on the circumference of the lifting sleeve, and the guide member passes through the avoidance groove and extends into the guide groove.

[0026] The second aspect: A machining center comprises a base, a processing table arranged on the base, and an exchange table detachably mounted on the processing table, and also comprises the above-mentioned exchange workbench device, wherein the exchange workbench device is arranged on the base, the bottom of the base is fixedly arranged on the base, and the exchange arm connected to the acting member is used for taking and placing the exchange table.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention relates to an exchange worktable device, which realizes the function of worktable exchange through overall lifting and partial rotation. In addition, a direct drive component is used to replace a traditional complex and overly large rotary cylinder, and a nested conversion component is used at the same time to further reduce the volume of the exchange worktable device, thereby maximally matching the installation structures of various machine tools, achieving better versatility, and reducing the impact on the precision of the machine tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1This is a front view of the present invention after the exchange arm is installed;

[0030] Figure 2 A side view of the present invention after the exchange arm is installed;

[0031] Figure 3 For the present invention Figure 2 A partial cross-sectional view of

[0032] Figure 4 For the present invention Figure 1 A partial cross-sectional view of

[0033] Figure 5 It is a cross-sectional view of the driving member and the driving connecting member of the present invention;

[0034] Figure 6 It is a schematic diagram of the assembly structure of the present invention.

[0035] Description of reference numerals:

[0036] 100, base; 101, guide groove; 200, action member; 300, exchange arm; 400, drive connector; 500, conversion assembly; 501, force member; 5011, force column; 5012, guide groove; 502, forced member; 5021, forced sleeve; 5022, positioning column; 503, load-bearing bearing group; 504, guide member; 601, lifting sleeve; 600, lifting assembly; 6011, stopper; 602, lifting base; 603, avoidance groove; 700, drive member; 701, first telescopic drive member; 701A, first piston; 701B, first piston rod; 702, second telescopic drive member; 702A, second piston; 702B, second piston rod; 800, base; 801, processing table; 900, exchange table. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be internal connection between two elements, indirect connection, or an interactive relationship between two elements.

[0042] like Figures 1 to 6 As shown, the present invention provides an exchange workbench device;

[0043] A first aspect: An exchange workbench device includes a base 100 and an action member 200, wherein the action member 200 is used to drive an exchange arm 300 to rotate and lift; and further includes a composite motion component, wherein the composite motion component includes a driving connection member 400 and a conversion assembly 500;

[0044] The driving connecting member 400 is connected to the output end of the driving member 700, and the driving connecting member 400 is used to transmit the lifting linear motion output by the driving member 700 to the conversion assembly 500;

[0045] The conversion assembly 500 includes a force-applying member 501 and a forced member 502 which are nested with each other. The force-applying member 501 is connected to the driving connecting member 400, and the forced member 502 is connected to the acting member 200. The force-applying member 501 and the forced member 502 cooperate to convert the lifting linear motion transmitted by the driving connecting member 400 into a rotational motion.

[0046] The force applying member 501 is at least partially located in the forced member 502 , or the forced member 502 is at least partially located in the force applying member 501 .

[0047] Among them, when the driving member 700 transmits the output linear motion to the conversion component 500 through the driving connecting member 400, the force-applying member 501 of the conversion component 500 performs linear motion at the same time. Since a small part of the force-applying member 501 is located in the forced member 502, or the forced member 502 is at least partially located in the force-applying member 501, the forced member 502 performs rotational motion under the action of the linear motion of the force-applying member 501. In the process of converting linear motion into rotational motion, compared with the traditional rotary cylinder, the connection structure and occupied space adopted by the present invention are superior to those of the rotary cylinder.

[0048] In a preferred embodiment of the present invention, the force applying member 501 includes a force applying column 5011, one end of which is connected to the driving connecting member 400, and a spiral guide groove 5012 is provided on the circumference of the body of the force applying column 5011, and the spiral guide groove 5012 is arranged to surround upwards;

[0049] The forced member 502 includes a forced sleeve 5021, which is connected to the acting member 200. The force-applying column 5011 is arranged in the forced sleeve 5021. A positioning column 5022 is arranged in the tube of the forced sleeve 5021. The column axis of the positioning column 5022 is perpendicular to the tube axis of the forced sleeve 5021; at least part of the positioning column 5022 is slidably or rollingly arranged in the spiral guide groove 5012.

[0050] Among them, a spiral guide groove 5012 that spirally rises is opened on the circumferential surface of the main body of the force-applying column 5011, and the number of the guide grooves 5012 is arranged corresponding to the positioning column 5022. A roller is arranged at one end of the positioning column 5022 located in the spiral guide groove 5012, and the other end is fixedly arranged on the inner circumferential surface of the tube of the forced sleeve 5021. The diameter of the roller is the same as the inner diameter of the spiral guide groove 5012, so that the roller is subjected to less friction when sliding or rolling in the spiral guide groove 5012. When the force-applying column 5011 performs a lifting motion, the spiral guide groove 5012 on its surface also moves upward together. Since the positioning column 5022 is initially stationary, during the upward movement of the spiral guide groove 5012, the positioning column 5022 is forced to move along the spiral guide groove 5012. Since the spiral guide groove 5012 is a spiral guide groove, the forced sleeve 5021 fixedly connected to the positioning column 5022 performs a rotational motion on a horizontal plane.

[0051] In a preferred embodiment of the present invention, the composite motion component also includes a lifting sleeve 601 arranged between the base 100 and the conversion assembly 500 and a lifting base 602 fixed to the lower end of the lifting sleeve 601. The lifting sleeve 601 is sleeved on the outside of the conversion assembly 500, and the lifting base 602 is arranged below the conversion assembly 500. The lifting sleeve 601 and / or the lifting base 602 are used to drive the conversion assembly 500 to rise and fall.

[0052] Among them, the lifting sleeve 601 is located in the base 100. The base 100 remains stationary during the lifting process of the lifting sleeve 601. The lifting base 602 drives the lifting sleeve 601 to rise and fall. The conversion assembly 500 located inside the lifting sleeve 601 also rises or falls accordingly. After the lifting sleeve 601 and / or the lifting base 602 have finished rising, it will not affect the function of the conversion assembly 500.

[0053] In a preferred embodiment of the present invention, the conversion assembly 500 further includes a load-bearing bearing group 503, which is disposed between the lifting sleeve 601 and the forced sleeve 5021, and is used to support the forced sleeve 5021;

[0054] The forced sleeve 5021 is rotatably arranged with the lifting sleeve 601 through the load-bearing bearing group 503 .

[0055] Among them, the load-bearing bearing group 503 is composed of several load-bearing bearings. When there are two load-bearing bearings, they are distributed and fixed in the lifting sleeve 601 up and down, supporting the forced sleeve 5021. In addition, it also prevents the forced sleeve 5021 from axial movement. The forced sleeve 5021 can rotate under the support of the load-bearing bearing group 503.

[0056] In a preferred embodiment of the present invention, the load-bearing bearing group 503 includes a plurality of load-bearing bearings which are coaxial and arranged parallel to each other;

[0057] The load-bearing bearings all include a fixed outer ring and a rotating inner ring, wherein the fixed outer ring is fixedly arranged on the circumference of the inner cylinder of the lifting sleeve 601, and the rotating inner ring is fixedly arranged on the outer circumference of the cylinder of the forced sleeve 5021;

[0058] A stopper 6011 is provided on the upper portion of the lifting sleeve 601 , and the load-bearing bearing located below the load-bearing bearing assembly 503 is supported on the stopper 6011 .

[0059] Among them, a plurality of stop parts 6011 are arranged on the inner circumference of the lifting sleeve 601. The stop parts 6011 are truncated cone-shaped. The number of the stop parts 6011 corresponds to the number of the load-bearing shafts. Each stop part 6011 is fixedly connected to the bottom of the rotating outer ring of the load-bearing shaft and does not affect the rotation of the rotating inner ring. The axes of the load-bearing bearings fixed in the multiple stop parts 6011 are coaxial and parallel to each other, and the stop parts 6011 support the load-bearing bearings.

[0060] In a preferred embodiment of the present invention, the driving member 700 further includes a first telescopic driving member 701 and a second telescopic driving member 702.

[0061] The first telescopic driving member 701 includes a first piston 701A and a first piston rod 701B, and the first piston rod 701B is fixedly connected to the lifting base 602;

[0062] The second telescopic driving member 702 includes a second piston 702A and a second piston rod 702B. The first piston rod 701B forms a cylinder body. The second piston 702A is located in the cylinder body of the first piston rod 701B. The second piston rod 702B is connected to the driving connecting member 400.

[0063] Among them, the top of the first piston rod 701B is connected to the lifting sleeve 601 or the lifting base 602. When the hydraulic oil pushes the first piston rod 701B to drive the first piston rod 701B to move up and down, the lifting sleeve 601 or the lifting base 602 located at the top of the first piston rod 701B moves up and down accordingly; the second piston rod 702B is fixedly connected to the driving connecting member 400. When the hydraulic oil pushes the second piston 702A to drive the second piston rod 702B to move up and down, the driving connecting member 400 connected to the second piston rod 702B moves up and down accordingly.

[0064] In a preferred embodiment of the present invention, the force applying member 501 includes a force applying sleeve, and a positioning column is provided on the inner circumference of the force applying sleeve, and the axis of the positioning column is perpendicular to the axis of the force applying sleeve.

[0065] The forced member 502 includes a forced column, which is arranged in the force-applying sleeve; a spiral guide groove is provided on the circumference of the body of the forced column and is arranged to surround upward; at least part of the positioning column is slidably or rollingly arranged in the spiral guide groove.

[0066] Among them, a plurality of positioning columns are provided at a position on the axis of the force-applying column, a plurality of spiral guide grooves matched with the positioning columns are provided on the inner circumference of the forced sleeve, and a roller is provided at one end of the positioning column located in the spiral guide groove. The roller diameter is the same as the inner diameter of the spiral guide groove, so that the roller is subjected to less friction when sliding or rolling in the spiral guide groove. When the force-applying column performs lifting and lowering motion, the spiral guide groove drives the forced sleeve to perform rotational motion under the action of the positioning column.

[0067] In a preferred embodiment of the present invention, the force-applying member 501 includes a force-applying sleeve, a positioning column is provided on the inner circumference of the force-applying sleeve, and the column axis of the positioning column is perpendicular to the column axis of the force-applying sleeve; the forced member 502 includes a forced column, which is arranged in the force-applying sleeve; a spiral guide groove which is arranged upward and surrounds the body of the forced column is provided on the circumference of the body of the forced column; at least part of the positioning column is slidably or rollingly arranged in the spiral guide groove; or, the force-applying member 501 includes a force-applying sleeve, a spiral guide groove which is arranged upward and surrounds the body of the force-applying sleeve is provided on the inner circumference of the body of the forced column; the forced member 502 includes a forced column, a positioning column is provided on the body of the forced column, and the column axis of the positioning column is perpendicular to the column axis of the forced column; at least part of the positioning column is slidably or rollingly arranged in the spiral guide groove.

[0068] Among them, the inner circumference of the force-applying sleeve is provided with a plurality of positioning posts, the circumference of the forced column body is provided with a plurality of spiral guide grooves matched with the positioning posts, and one end of the positioning post located in the spiral guide groove is provided with a roller, and the diameter of the roller is the same as the inner diameter of the spiral guide groove, so that the roller is subjected to less friction when sliding or rolling in the spiral guide groove, and when the force-applying sleeve is lifted and lowered, the spiral guide groove drives the forced sleeve to rotate under the action of the positioning posts; or, the inner circumference of the force-applying sleeve is provided with a plurality of spiral guide grooves, and a plurality of positioning posts matched with the plurality of spiral guide grooves are provided at a preset position on the circumference of the forced column body, and one end of the positioning post located in the spiral guide groove is provided with a roller, and the diameter of the roller is the same as the inner diameter of the spiral guide groove, so that the roller is subjected to less friction when sliding or rolling in the spiral guide groove, and when the force-applying sleeve is lifted and lowered, the positioning post moves in the spiral guide groove, and the forced column body fixedly connected to the positioning post thereby realizes rotational motion.

[0069] In a preferred embodiment of the present invention, a guide member 504 is radially arranged on the outer circumference of the force-applying member 501 , a guide groove 101 is axially arranged on the circumference of the base 100 , an avoidance groove 603 is axially arranged on the circumference of the lifting sleeve 601 , and the guide member 504 passes through the avoidance groove 603 and extends into the guide groove 101 .

[0070] The guide member 504 cooperates with the guide groove 101 to limit the force-applying member 501 to prevent the force-applying member 501 from rotating during the ascending process.

[0071] The second aspect: A machining center includes a base 800, a processing table 801 arranged on the base 800, and an exchange table 900 detachably mounted on the processing table 801, and also includes the above-mentioned exchange workbench device, the exchange workbench device is arranged on the base 800, the bottom of the base 100 is fixedly arranged with the base 800, and the exchange arm 300 connected to the working member 200 is used to take and place the exchange table 900.

[0072] Working principle: After the workpiece is processed, it is unloaded and loaded, and the processing table 801 moves to the exchange arm 300. At this time, the first piston rod 701B of the first telescopic drive member 701 drives the lifting sleeve 601 to perform lifting movement. At this time, the conversion component 500 located in the lifting sleeve 601 is lifted and lowered at the same time, and the exchange arm 300 connected to the conversion component 500 is lifted. Since the exchange arm 300 is provided with a claw, when the exchange arm 300 is lifted, the exchange table 900 on the processing table 801 is lifted by the claw. Since the second telescopic drive member 702 is located in the first telescopic drive member 701 , which is lifted by the first piston rod 701B at the same time. When the exchange arm 300 is lifted to a predetermined height, the second piston rod 702B of the second telescopic drive member 702 extends out through the driving connection member 400 to convert the linear drive into a rotational motion through the conversion assembly 500, thereby driving the exchange arm 300 connected to the conversion assembly 500 to rotate and exchange the position, thereby completing the exchange of the processed workpiece and the unprocessed material, and finally completing the descending movement of the exchange arm 300 through the first telescopic drive member 701 until the exchange table 900 stably falls on the processing table 801.

[0073] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0074] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. 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 switching workbench device, comprising a base (100) and an operating member (200), wherein the operating member (200) is used to drive a switching arm (300) to rotate and lift; characterized in that: Also included is a composite motion component, the composite motion component including a drive connector (400) and a conversion assembly (500); The driving connecting member (400) is connected to the driving member (700), and the driving connecting member (400) is used to transmit the lifting linear motion output by the driving member (700) to the conversion assembly (500); The conversion assembly (500) comprises a force-applying member (501) and a forced member (502) which are nested with each other, the force-applying member (501) is connected to the driving connecting member (400), and the forced member (502) is connected to the acting member (200), and the force-applying member (501) and the forced member (502) cooperate to convert the lifting linear motion transmitted by the driving connecting member (400) into a rotational motion; The force-applying member (501) is at least partially located in the forced member (502), or the forced member (502) is at least partially located in the force-applying member (501).

2. The exchange table device according to claim 1, characterized in that: The force applying member (501) comprises a force applying column (5011), one end of which is connected to the driving connecting member (400), a spiral guide groove (5012) is provided on the circumferential surface of the body of the force applying column (5011), and the spiral guide groove (5012) is arranged to surround upwards; The forced member (502) comprises a forced sleeve (5021), the forced sleeve (5021) is connected to the acting member (200), the force-applying column (5011) is arranged in the forced sleeve (5021), a positioning column (5022) is arranged in the cylinder of the forced sleeve (5021), and the cylinder axis of the positioning column (5022) is perpendicular to the cylinder axis of the forced sleeve (5021); at least part of the positioning column (5022) is slidably or rollingly arranged in the spiral guide groove (5012).

3. The exchange table device according to claim 2, characterized in that: The composite motion component further comprises a lifting assembly (600), wherein the lifting assembly (600) comprises a lifting sleeve (601) arranged between the base (100) and the conversion assembly (500) and a lifting base (602) fixed to the lower end of the lifting sleeve (601), wherein the lifting sleeve (601) is sleeved on the outer side of the conversion assembly (500), and the lifting base (602) is arranged below the conversion assembly (500), and the lifting sleeve (601) and / or the lifting base (602) are used to drive the conversion assembly (500) to lift and lower as a whole.

4. The exchange table device according to claim 3, characterized in that: The conversion assembly (500) further comprises a load-bearing bearing group (503), wherein the load-bearing bearing group (503) is arranged between the lifting sleeve (601) and the forced sleeve (5021) and is used to support the forced sleeve (5021); The forced sleeve (5021) is rotatably arranged with the lifting sleeve (601) via the load-bearing bearing group (503).

5. The exchange table device according to claim 4, characterized in that: The load-bearing bearing group (503) comprises a plurality of load-bearing bearings which are coaxial and arranged parallel to each other; The load-bearing bearings each include a fixed outer ring and a rotating inner ring, wherein the fixed outer ring is fixedly arranged on the circumference of the inner cylinder of the lifting sleeve (601), and the rotating inner ring is fixedly arranged on the outer circumference of the cylinder of the forced sleeve (5021); Wherein, a stopper (6011) is provided on the upper portion of the lifting sleeve (6011), and the load-bearing bearing located below the load-bearing bearing group (503) is supported on the stopper (601).

6. The exchange table device according to claim 3, characterized in that: The driving member (700) further comprises a first telescopic driving member (701) and a second telescopic driving member (702). The first telescopic driving member (701) comprises a first piston (701A) and a first piston rod (701B), and the first piston rod (701B) is fixedly connected to the lifting base (602); The second telescopic driving member (702) includes a second piston (702A) and a second piston rod (702B), the first piston rod (701B) forms a cylinder body, the second piston (702A) is located in the cylinder body of the first piston rod (701B), and the second piston rod (702B) is connected to the driving connecting member (400).

7. The exchange table device according to claim 1, characterized in that: The force applying member (501) comprises a force applying sleeve, a positioning column is provided on the inner circumference of the force applying sleeve, and the column axis of the positioning column is perpendicular to the column axis of the force applying sleeve; The forced member (502) comprises a forced column, which is arranged in the force-applying sleeve; a spiral guide groove arranged to surround upwards is provided on the circumference of the body of the forced column; At least a portion of the positioning post is slidably or rollingly disposed in the spiral guide groove.

8. The exchange table device according to claim 1, characterized in that: The force-applying member (501) includes a force-applying sleeve, a positioning column is provided on the inner circumference of the tube of the force-applying sleeve, and the column axis of the positioning column is perpendicular to the column axis of the force-applying sleeve; the forced member (502) includes a forced column, and the forced column is arranged in the force-applying sleeve; a spiral guide groove which is arranged to surround upward is opened on the circumference of the body of the forced column; at least part of the positioning column is slidably or rollingly arranged in the spiral guide groove; or, the force-applying member (501) includes a force-applying sleeve, a spiral guide groove which is arranged to surround upward is opened on the inner circumference of the tube of the force-applying sleeve; the forced member (502) includes a forced column, a positioning column is provided on the body of the forced column, and the column axis of the positioning column is perpendicular to the column axis of the forced column; at least part of the positioning column is slidably or rollingly arranged in the spiral guide groove.

9. The exchange table device according to any one of claims 1 to 8, characterized in that: A guide member (504) is radially arranged on the outer circumference of the force-applying member (501), a guide groove (101) is axially arranged on the circumference of the base (100), and an avoidance groove (603) is axially arranged on the circumference of the lifting sleeve (601), and the guide member (504) passes through the avoidance groove (603) and extends into the guide groove (101).

10. A machining center, comprising a base (800), a machining table (801) disposed on the base (800), and a switching table (900) detachably mounted on the machining table (801), characterized in that: It also includes the exchange workbench device according to any one of claims 1 to 9, wherein the exchange workbench device is arranged on the base (800), the bottom of the base (100) is fixedly arranged on the base (800), and the exchange arm (300) connected to the action member (200) is used to take and place the exchange table (900).

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