CN107891310A - One kind is based on multistation manufacture system device under single clamping - Google Patents

Abstract

The invention discloses one kind to be based on multistation manufacture system device under single clamping, including：A shaft platforms, clutch shaft bearing device, C shaft platforms and tailstock bearing arrangement；Wherein, the A shaft platforms are connected by the clutch shaft bearing device with the C shaft platforms；The C shaft platforms are connected with tailstock bearing arrangement.The multistation that the present invention solves Same Part difference machined surface is switched fast and positioned processing, while realizes the automatic capturing of different station machining coordinate origin, realizes that multistation clamping is in stable condition reliable, realizes three axle lathe multistation machining functions.

Description

A multi-station manufacturing system device based on single clamping

technical field

The invention belongs to the field of mechanical manufacturing equipment, in particular to a multi-station manufacturing system device based on single clamping.

Background technique

Fixture is a widely used process equipment. Its main function in processing is to complete the positioning and clamping of the workpiece to ensure the reliability of processing. It can greatly improve production efficiency and reduce production costs. Existing aerospace products are faced with the current situation of short development cycle, many parts and products, and short time for complete sets of products. The production units are faced with the pressure of fast delivery of products. Aerospace products are mostly complex precision parts, and the production process often requires the use of fixtures to ensure product production efficiency and quality. The characteristics of small batches and multiple varieties of parts have led to the status quo of a large number of fixtures, and the design and production cycle of tooling is relatively long, which takes up relatively high production costs. According to statistics, the production preparation time accounts for 50%-70% of the production and manufacturing cycle in the whole production process, and among them, the design and manufacture of fixtures account for about 70% of the production preparation time. Most of the tooling and fixtures used by the existing aerospace product production units are not sufficiently automated and intelligent, such as vise clamping, pressure plate clamping, and large veneer tire clamping. The use and installation of these fixtures takes up a lot of processing preparation time, making the waiting time of the machine tool account for 20%-50% of the cutting time of the machine tool. In the current reality that this type of product needs to be developed quickly, it causes a waste of machine tool production resources.

Contents of the invention

The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to provide a multi-station manufacturing system device based on a single clamping, which solves the multi-station rapid switching and positioning processing of different processing surfaces of the same part, and simultaneously realizes The automatic alignment of the origin of the machining coordinates of different stations realizes the stable and reliable multi-station clamping state and realizes the multi-station processing function of the three-axis machine tool.

The technical solution of the present invention is: a multi-station manufacturing system device based on a single clamping, including: an A-axis platform, a first bearing device, a C-axis platform and a tailstock bearing device; wherein, the A-axis platform passes through The first bearing device is connected with the C-axis platform; the C-axis platform is connected with the tailstock bearing device.

In the above-mentioned multi-station manufacturing system device based on single clamping, the A-axis platform includes a first servo motor and a first reducer; the C-axis platform includes a second servo motor, a second reducer, a shaft bracket, The adapter plate, the chuck, and the adapter plate bearing; the first servo motor is connected to the rotating shaft of the first reducer; the first reducer is connected to one end of the rotating shaft bracket through the first bearing device, so The other end of the rotating shaft bracket is connected to the tailstock bearing device; the second servo motor is connected to the rotating shaft of the second reducer; the second reducer is arranged on the rotating shaft support; The adapter plate bearing is connected with the output shaft of the second reducer; the chuck is connected with the adapter plate.

In the above-mentioned multi-station manufacturing system device based on single clamping, the first bearing device includes a first bearing cover, a first bearing cover bolt, a first gasket, a first bearing, a first bearing support and a first Sealing ring; wherein, the first bearing is embedded in the first bearing support; the first bearing cover is connected to the first bearing support through the first bearing cover bolts, and the first The gasket is arranged between the first bearing cover and the first bearing; the first sealing ring is arranged at one end of the rotating shaft support; one end of the rotating shaft support passes through the first bearing and the first bearing. A reducer is connected.

In the above-mentioned multi-station manufacturing system device based on single clamping, the tailstock bearing device includes a tailstock, a tailstock sealing ring, a tailstock bearing, a second gasket, a third gasket and a tailstock bearing cap; wherein , the tailstock sealing ring is arranged on the other end of the rotating shaft support; the other end of the rotating shaft support is connected to the tailstock through the tailstock bearing; the tailstock bearing is connected through the second gasket, the first The three gaskets and the tailstock bearing cover are embedded in the tailstock.

The above-mentioned multi-station manufacturing system device based on single clamping further includes a base; wherein, the first bearing support is connected to one end of the base; the tailstock is connected to the other end of the base .

In the above-mentioned multi-station manufacturing system device based on single clamping, the C-axis platform further includes: a rotating shaft support sealing ring; wherein, the rotating shaft support sealing ring is installed between the rotating shaft support and the adapter plate .

In the above-mentioned multi-station manufacturing system device based on single clamping, the C-axis platform further includes: a rotating shaft platform cover; wherein, the rotating shaft platform cover is arranged on the rotating shaft support; the second servo motor and the The second reducer is arranged in the space formed by the rotating shaft platform cover and the rotating shaft bracket.

In the above-mentioned multi-station manufacturing system device based on single clamping, the rotating shaft platform cover includes a counterweight and a cover plate; wherein, the counterweight is connected to the cover plate.

The above-mentioned multi-station manufacturing system device based on single clamping further includes a side cover; wherein, the first servo motor and the first reducer are both arranged in the side cover.

The above-mentioned multi-station manufacturing system device based on a single clamping also includes a guide pin I; wherein, the guide pin I is arranged on the first bearing support; the side wall of the rotating shaft bracket is provided with a first Arc groove, described guide pin 1 is embedded in described first arc groove.

The above-mentioned multi-station manufacturing system device based on single clamping also includes a tailstock guide pin; wherein, the tailstock guide pin is arranged on the tailstock; the other side wall of the rotating shaft bracket is provided with a second an arc-shaped groove, and the tailstock guide pin is embedded in the second arc-shaped groove.

The advantage of the present invention compared with prior art is:

(1) The present invention realizes the rapid switching of multi-station processing on different processing surfaces of the same part, and at the same time realizes the automatic alignment of the origin of the processing coordinates of different stations, realizes stable and reliable multi-station clamping state, reduces the number of clamping times, and realizes The multi-station processing function of the three-axis machine tool improves the processing efficiency and product processing quality;

(2) The present invention reduces the offset distance between the center of mass of the entire C-axis platform and the centerline of the rotating shaft by using a counterweight on the C-axis platform, reduces the moment of inertia of the C-axis platform, and thereby reduces the servo motor connected to it and the first The rated power of a reducer, thereby reducing the structural size and overall cost of the entire device;

(3) The present invention realizes the positioning accuracy and stability of the C-axis platform at 90° by setting positioning pins;

(4) The present invention realizes the self-locking function of the rotation and positioning of the entire platform by adopting a servo motor with an electromagnetic brake function, thereby improving the accuracy and reliability of positioning;

(5) The present invention calculates the relative relationship between different stations by setting reasonable tool setting points and coordinate transformation, so as to realize the automatic switching of coordinate origins of different processing stations, which greatly improves the clamping efficiency and eliminates repeated tool setting errors. Improve product processing accuracy;

(6) The present invention solves the sealing problem of servo motor wiring by reasonably setting semicircular holes on the rotating shaft bracket and the first bearing support, and installing a sealing ring;

(7) The present invention realizes the connection between the numerical control system and the rotating shaft platform system by setting the dual-axis controller of the servo motor, and the numerical control system realizes the precise control of the rotation of the A and C axes of the rotating shaft platform through M code instructions.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiment. The drawings are only for the purpose of illustrating a preferred embodiment and are not to be considered as limiting the invention. Also throughout the drawings, the same reference numerals are used to designate the same components. In the attached picture:

Fig. 1 is a front view of a multi-station manufacturing system device based on a single clamping provided by an embodiment of the present invention;

Fig. 2 is a left view of the multi-station manufacturing system device based on a single clamping provided by the embodiment of the present invention;

Fig. 3 is a top view of the multi-station manufacturing system device based on a single clamping provided by the embodiment of the present invention without the side cover;

Fig. 4 is a top view of a multi-station manufacturing system device based on a single clamping provided by an embodiment of the present invention;

Fig. 5 is a cross-sectional view of a multi-station manufacturing system device based on a single clamping provided by an embodiment of the present invention;

Fig. 6 is an exploded view of a multi-station manufacturing system device based on a single clamping provided by an embodiment of the present invention;

Fig. 7 is a schematic diagram of workpiece clamping provided by an embodiment of the present invention;

Fig. 8 is a schematic diagram of the processing object of the device provided by the embodiment of the present invention;

Fig. 9 is a schematic diagram of the origin of the initial clamping coordinates provided by the embodiment of the present invention;

Fig. 10 is a schematic diagram of the principle of coordinate origin transformation provided by the embodiment of the present invention;

Fig. 11 is a schematic diagram of the principle of the control system provided by the embodiment of the present invention.

Detailed ways

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

Figure 1 is a front view of a multi-station manufacturing system device based on a single clamping provided by an embodiment of the present invention; Figure 2 is a left view of a multi-station manufacturing system device based on a single clamping provided by an embodiment of the present invention; Fig. 3 is a top view of the multi-station manufacturing system device based on a single clamping provided by the embodiment of the present invention without the side cover; Fig. 4 is a view of the multi-station manufacturing system device based on a single clamping provided by the embodiment of the present invention Top view; Figure 5 is a cross-sectional view of a multi-station manufacturing system device based on a single clamping provided by an embodiment of the present invention; Figure 6 is an exploded view of a multi-station manufacturing system device based on a single clamping provided by an embodiment of the present invention .

Referring to FIGS. 1 to 6 , the multi-station manufacturing system device based on single clamping includes: A-axis platform 34 , a first bearing device, C-axis platform 6 and a tailstock bearing device. in,

The A-axis platform 34 includes a first servo motor 24 and a first reducer 14; the C-axis platform 6 includes a second servo motor 9, a second reducer 13, a shaft support 61, an adapter plate 11, a chuck 4, and an adapter plate Bearing 12; the first servo motor 24 is connected to the rotating shaft of the first reducer 14; the first reducer 14 is connected to one end of the rotating shaft support 61 through the first bearing device, and the other end of the rotating shaft support 61 is connected to the tailstock bearing device; The second servo motor 9 is connected to the rotating shaft of the second reducer 13; the second reducer 13 is arranged on the rotating shaft support 61; the adapter plate 11 is connected with the output shaft of the second reducer 13 through the adapter plate bearing 12; the chuck 4 It is connected with the adapter plate 11. During specific implementation, the chuck 4 is a four-jaw chuck.

Specifically, the first bearing device includes a first bearing cap 15 , a first bearing cap bolt 28 , a first gasket 20 , a first bearing 16 , a first bearing support 5 and a first sealing ring 31 . Among them, the first bearing 16 is embedded in the first bearing support 5; the first bearing cover 15 is connected with the first bearing support 5 through the first bearing cover bolt 28, and the first gasket 20 is arranged on the first bearing cover 15 Between the first bearing 16 ; the first seal ring 31 is arranged at one end of the rotating shaft support 61 ; one end of the rotating shaft support 61 is connected with the first reducer 14 through the first bearing 16 .

The tailstock bearing device includes a tailstock 1 , a tailstock sealing ring 33 , a tailstock bearing 10 , a second gasket 19 , a third gasket 201 and a tailstock bearing cap 8 . Wherein, the tailstock sealing ring 33 is arranged on the other end of the rotating shaft support 61; the other end of the rotating shaft support 61 is connected with the tailstock 1 through the tailstock bearing 10; the tailstock bearing 10 passes through the second gasket 19 and the third gasket 201 And the tailstock bearing cover 8 is embedded in the tailstock 1.

The device also includes a base 3 , wherein the first bearing support 5 is connected to one end of the base 3 ; the tailstock 1 is connected to the other end of the base 3 . Specifically, the first bearing support 5 and the tailstock 1 are installed on both ends of the base 3 through the base mounting bolts 23 respectively.

The C-axis platform 6 further includes: a rotating shaft support seal ring 32 and a rotating shaft platform cover 62 ; wherein the rotating shaft support sealing ring 32 is installed between the rotating shaft support 61 and the adapter plate 11 . The rotating shaft platform cover 62 is disposed on the rotating shaft support 61 ; the second servo motor 9 and the second reducer 13 are both disposed in the space formed by the rotating shaft platform cover 62 and the rotating shaft support 61 .

The rotating shaft platform cover 62 includes a counterweight 17 and a cover plate 2 ; wherein, the counterweight 17 and the cover plate 2 are connected. Specifically, the counterweight 17 is fixedly connected to the rotating shaft support 61 through the counterweight mounting bolts 35 , and the counterweight 17 is fixedly connected to the cover plate 2 through the cover plate mounting bolts 21 . The benefit of the counterweight 17 is to reduce the offset distance between the center of mass of the entire C-axis platform 6 and the centerline of the rotating shaft, reduce the moment of inertia of the C-axis platform 6, thereby reducing the number of first servo motors 24 and first reducers 14 connected thereto. The rated power, thereby reducing the structural size and overall cost of the entire device.

The device also includes a side cover 7 ; wherein, the first servo motor 24 and the first speed reducer 14 are both arranged inside the side cover 7 .

The device also includes a guide pin I30 and a tailstock guide pin 18; wherein, the guide pin I30 is arranged on the first bearing support 5; arc groove. The tailstock guide pin 18 is disposed on the tailstock 1; the other side wall of the rotating shaft support 61 is provided with a second arc-shaped groove, and the tailstock guide pin 18 is embedded in the second arc-shaped groove.

When working, the first servo motor 24 of the A-axis platform 34 drives the first reducer 14 to rotate, and the output shaft of the first reducer 14 is connected to the C-axis platform 6, so that the C-axis platform 6 can follow the servo instructions, at -10 ~ Rotate at any angle within 90°.

The second servo motor 9 on the C-axis platform 6 drives the second reducer 13 to rotate, and the output shaft of the second reducer 13 drives the adapter plate 11 to rotate, thereby driving the chuck 4 to rotate, and the workpiece to be processed is installed on the chuck 4 According to the processing feature requirements of the workpiece, when the C-axis platform 6 rotates 90°, the chuck 4 can drive the workpiece to rotate freely within the range of 0-360°, so as to realize the processing of the characteristics of the workpiece in various directions.

The C-axis platform 6 is respectively installed on the first bearing support 5 and the tailstock 1 through the first bearing 16 and the tailstock bearing 10; the first bearing support 5 and the tailstock 1 pass through the tailstock bearing cover bolt 22 and the first bearing The cover bolt 28 is fixed on the base 3. The first bearing cover 15 installs the first bearing 16 and the first washer 20 on the first bearing support 5 through the first bearing cover bolts 28 . The tailstock bearing cap 8 installs the tailstock bearing 10 , the second gasket 19 and the third gasket 201 on the tailstock 1 through the tailstock bearing cap bolts 22 to play a supporting role. The rotating shaft platform 6 is composed of a rotating shaft support 61, a second servo motor 9, a second reducer 13, a counterweight 17, a counterweight mounting bolt 35, a cover plate 2 and a cover plate mounting bolt 21, and the second reducer 13 is installed on the rotating shaft support 61, the output shaft of the second reducer 13 drives the adapter plate 11 and the chuck 4 to rotate. The adapter plate 11 is installed in the bearing hole of the rotating shaft bracket 61 through the adapter plate bearing 12 . The first sealing ring 31 is installed on one end of the rotating shaft support 61 to seal the cutting fluid. The tailstock sealing ring 33 is installed on the other end of the rotating shaft bracket 61 to prevent cutting fluid from pouring into the tailstock bearing 10 and prolong the service life of the tailstock bearing 10 . The rotating shaft support seal ring 32 is installed in the sealing ring groove on the upper part of the rotating shaft support 61 , and plays a role of isolating the cutting fluid from entering the inside of the C-axis platform 6 .

The tailstock guide pin 18 on the tailstock 1 and the guide pin I30 on the first bearing support 5 play the role of positioning the C-axis platform 6, ensuring that when the C-axis platform 6 rotates 90°, it is in place accurately and the platform is positioned rigidly enough. The side cover 7 is installed on the first bearing support 5 to protect the first servo motor 24 and the first reducer 14 .

Further, first, the product is installed on the four-jaw chuck, at this time, the A axis (horizontal rotation axis) is 0°, and the C axis (the axis with the chuck) is 0°. After clamping, use the electromagnetic brakes of the A and C axis servo motors (namely the first servo motor and the second servo motor) to lock the A and C axis positioning, and then the product end face features and cavity features can be processed (such as Figure 7). Among them, the first servo motor 24 is a servo motor with a power of 1.5KW and an electromagnetic brake, and the first reducer 14 is a right-angle reducer with a reduction ratio of 20:1 and a rated power of 1.5KW. The power of the second servo motor 9 is a 1KW servo motor with an electromagnetic brake, and the second reducer 13 is a right-angle reducer with a reduction ratio of 20:1 and a rated power of 1KW.

After processing the end face features of the product, the electromagnetic brake of the servo motor is unlocked, and then rotates 90° through the A-axis to realize the side of the product facing upward, and the A-axis is positioned and locked. At this time, one side of the product can be processed. After processing a side feature, you can turn the C axis to realize different feature processing on the four sides of the product. Then the above steps can realize the function of one-time clamping of the product and fast switching of multi-station processing.

Design a reasonable tool setting point according to the multi-station switching tooling, and input the relationship into the CNC machining program by calculating the relative relationship between different flipping surfaces, so as to realize the automatic alignment of the coordinate origin between different processing surfaces, saving alignment At the same time, because the actual tool setting point is only one, the impact of tool setting errors on machining accuracy is avoided to the greatest extent.

The specific implementation principle is shown in Figure 8. There is a cavity structure in the middle of a part, and a hole on the side wall requires multi-station processing.

First of all, the cavity needs to be processed, the clamping position (as shown in Figure 9), and the coordinate origin is set on the center of symmetry, which is set to A (X0, Y0, Z0).

Secondly, when machining side wall holes, the coordinate origin is generally set to B (X1, Y1, Z1), and the clamping method in the actual machining process (shown in Figure 10). In order to make the origin point of the program the same as the tool setting point, it is necessary to transform the machining coordinate system B into the coordinate system A of the previous step of milling through data transformation.

Finally, the position of the coordinate system is converted from A to B, thus realizing one-time tool setting and multi-station machining.

In order to meet the requirements of one-button processing, reduce human operation errors, realize the connection between the CNC system of the machine tool and the multi-station clamping system, realize the automatic clamping of the workpiece, the automatic conversion of multi-stations, the automatic conversion of the program origin and other functions, the establishment control system. The connection between the controller and the numerical control system is realized through the M code of the CNC machine tool. The upper part of the controller is connected with the numerical control system, and the lower part is connected with the driver. Figure 11).

The above-described embodiments are only preferred specific implementations of the present invention, and ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A multi-station manufacturing system device based on a single clamping, characterized in that it comprises: an A-axis platform (34), a first bearing device, a C-axis platform (6) and a tailstock bearing device; wherein, The A-axis platform (34) is connected to the C-axis platform (6) through the first bearing device; The C-axis platform (6) is connected with the tailstock bearing device. 2. The multi-station manufacturing system device based on a single clamping according to claim 1, characterized in that: the A-axis platform (34) includes a first servo motor (24) and a first reducer (14) ; The C-axis platform (6) includes a second servo motor (9), a second reducer (13), a shaft support (61), an adapter plate (11), a chuck (4) and an adapter plate bearing (12 ); The first servo motor (24) is connected to the rotating shaft of the first reducer (14); The first reducer (14) is connected to one end of the rotating shaft support (61) through the first bearing device, and the other end of the rotating shaft support (61) is connected to the tailstock bearing device; The second servo motor (9) is connected to the rotating shaft of the second reducer (13); The second reducer (13) is arranged on the shaft bracket (61); The transfer disc (11) is connected to the output shaft of the second reducer (13) through the transfer disc bearing (12); The chuck (4) is connected with the adapter plate (11). 3. The multi-station manufacturing system device based on single clamping according to claim 1, characterized in that: the first bearing device comprises a first bearing cap (15), a first bearing cap bolt (28), The first gasket (20), the first bearing (16), the first bearing support (5) and the first sealing ring (31); wherein, The first bearing (16) is embedded in the first bearing support (5); The first bearing cap (15) is connected to the first bearing support (5) through the first bearing cap bolt (28), and the first gasket (20) is arranged on the first bearing between the cover (15) and the first bearing (16); The first sealing ring (31) is arranged at one end of the rotating shaft bracket (61); One end of the rotating shaft bracket (61) is connected with the first reducer (14) through the first bearing (16). 4. The multi-station manufacturing system device based on single clamping according to claim 3, characterized in that: the tailstock bearing device comprises a tailstock (1), a tailstock sealing ring (33), a tailstock bearing (10), the second gasket (19), the third gasket (201) and the tailstock bearing cap (8); wherein, The tailstock sealing ring (33) is arranged on the other end of the rotating shaft bracket (61); The other end of the rotating shaft bracket (61) is connected with the tailstock (1) through the tailstock bearing (10); The tailstock bearing (10) is embedded in the tailstock (1) through the second gasket (19), the third gasket (201) and the tailstock bearing cap (8). 5. The multi-station manufacturing system device based on single clamping according to claim 4, characterized in that: it also includes a base (3); wherein, The first bearing support (5) is connected to one end of the base (3); The tailstock (1) is connected with the other end of the base (3). 6. The multi-station manufacturing system device based on a single clamping according to claim 1, characterized in that: the C-axis platform (6) further comprises: a rotating shaft bracket sealing ring (32); wherein, the rotating shaft The support sealing ring (32) is installed between the rotating shaft support (61) and the adapter plate (11). 7. The multi-station manufacturing system device based on a single clamping according to claim 5, characterized in that: the C-axis platform (6) further comprises: a rotating shaft platform cover (62); wherein, The rotating shaft platform cover (62) is covered on the rotating shaft support (61); Both the second servo motor (9) and the second reducer (13) are arranged in the space formed by the rotating shaft platform cover (62) and the rotating shaft support (61). 8. The multi-station manufacturing system device based on a single clamping according to claim 6, characterized in that: the rotating shaft platform cover (62) includes a counterweight (17) and a cover plate (2); wherein, the The counterweight (17) is connected with the cover plate (2). 9. The multi-station manufacturing system device based on a single clamping according to any one of claims 1-8, characterized in that it also includes a side cover (7); wherein, the first servo motor (24) and the The first reducer (14) is all arranged in the side cover (7). 10. The multi-station manufacturing system device based on a single clamping according to claim 2, further comprising a guide pin I (30); wherein, The guide pin I (30) is arranged on the first bearing support (5); A first arc-shaped groove is opened on a side wall of the rotating shaft bracket (61), and the guide pin I (30) is embedded in the first arc-shaped groove.