Assembly tool of generator end cover machining center

Abstract

The invention relates to the technical field of clamp tools for machine tools, and particularly discloses an assembly tool for a generator end cover machining center, which comprises a mounting bottom plate, an axial clamping assembly, a radial clamping assembly and a second supporting column, the axial clamping assembly is installed on the two pairs of first supporting columns. The radial clamping assembly comprises an abutting and clamping piece and a supporting and limiting piece which are close to each other up and down and are arranged in a clamped mode. Wherein the axial clamping assembly is used for clamping a bearing mounting hole in the middle of the generator end cover, namely primary clamping, and the radial clamping assembly is used for being matched with the axial clamping assembly to clamp the outer edge of the generator end cover, namely secondary clamping. According to the device, through two times of clamping operation, the clamping operation on the outer edge of the generator end cover is increased, the clamping and fixing capacity on the end cover is improved, and by conducting adaptive deformation on the two movable plates, the universality and the application capacity of the device can be improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of clamping tools and fixtures for machine tools, and particularly relates to an assembly fixture for a generator end cover machining center. Background Art

[0002] In the prior art, machining equipment such as machine tools is used to process parts. To improve work efficiency, when machining a generator end cover on a machining center, an assembly fixture is used to clamp and fix the generator end cover.

[0003] Currently, generally, a chuck is used to clamp the bearing installation hole in the middle of the generator end cover to achieve the purpose of clamping the generator end cover. However, for considerations such as heat dissipation, the shell wall of the generator end cover is generally set to be relatively thin. With a simple middle fixing method, the end cover is prone to shaking and vibration during subsequent processing, which in turn affects the machining accuracy and causes the generation of relatively many defective products. Summary of the Invention

[0004] The purpose of the present invention is to provide an assembly fixture for a generator end cover machining center to solve the problem that in the prior art, when a simple middle clamping method is used for the generator end cover, the end cover is prone to shaking and vibration during subsequent processing, which affects the machining accuracy.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: An assembly fixture for a generator end cover machining center, comprising: An installation base plate, on the top surface of which two pairs of first support columns are evenly installed; An axial clamping assembly, which is installed on the two pairs of first support columns; A radial clamping assembly, which is installed above the axial clamping assembly. The radial clamping assembly includes a clamping member and a limiting member that are closely arranged and engaged with each other up and down; A pair of second support columns, which are used to fix the radial clamping assembly on the axial clamping assembly; Among them, the axial clamping assembly is used to clamp the bearing installation hole in the middle of the generator end cover, which is the first clamping, and the radial clamping assembly is used to cooperate with the axial clamping assembly to clamp the outer edge of the generator end cover, which is the second clamping.

[0006] Preferably: The axial clamping assembly includes an installation cross seat. A linear displacement member is installed in the narrow slot in the middle of the installation cross seat, and a chuck is cooperatively installed on the linear displacement member; The chuck is specifically composed of three parts: a chuck body, movable jaws, and a jaw driving mechanism. The movable jaws move together to the side away from the axis of the chuck body to achieve the purpose of clamping the bearing installation hole in the middle of the generator end cover.

[0007] Preferably, the clamping member includes a fixed plate and a movable plate. There are two movable plates, which are respectively located on both sides of the fixed plate near the end of the axial clamping assembly; the two movable plates and the fixed plate together form a "V"-shaped front end for secondarily clamping the generator end cover that has been clamped once on the axial clamping assembly.

[0008] Preferably, the movable plate is composed of a plurality of adjacent sub-movable pieces. The movable plate as a whole has a triangular structure, and the lengths of the sub-movable pieces in the same movable plate gradually decrease; both ends of each sub-movable piece are sequentially arranged as inclined surfaces and flat surfaces, and a connecting ring is fixedly connected to the flat end of each sub-movable piece. A plug rod is inserted among a group of connecting rings on the same side, and a connecting block is fixedly sleeved at the end of the plug rod far from the axial clamping assembly.

[0009] Preferably, the clamping member further includes a telescopic member. The telescopic member includes a telescopic cylinder fixed on the top of the fixed plate and a cross beam fixedly installed on the output end of the telescopic cylinder, and the two connecting blocks are respectively fixed at both ends of the cross beam.

[0010] Preferably, a rectangular opening is formed at one end of the limiting member close to the axial clamping assembly for the axial clamping assembly for feeding to move, and two right trapezoidal grooves are symmetrically formed on the surface of the limiting member with respect to the rectangular opening. Two groups of limiting slots matching two groups of sub-movable pieces are respectively formed in the two right trapezoidal grooves.

[0011] Preferably, the sub-movable piece can translate in the limiting slot that is matched with it and for which it can slide and be inserted in a direction perpendicular to the axis of the telescopic cylinder.

[0012] Preferably, when secondarily clamping the circular generator end cover, both plug rods are inserted into the two groups of connecting rings, and the two movable plates do not deform. The two movable plates and the axial clamping assembly for feeding cooperate to achieve secondary clamping of the outer edge of the circular generator end cover.

[0013] Preferably, when secondarily clamping the rectangular generator end cover, the two plug rods are gradually withdrawn from the two groups of connecting rings. The right-angle sides of the rectangular generator end cover push back the corresponding sub-movable pieces on both sides, and the two movable plates undergo adaptive deformation. The two movable plates and the axial clamping assembly for feeding cooperate to achieve secondary clamping of the outer edge of the rectangular generator end cover.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. The secondary clamping of the present invention is carried out on the basis of the primary clamping. Through two clamping operations, the clamping operation on the outer edge of the generator end cover is increased, the clamping and fixing ability of the end cover is improved, the occurrence of situations such as shaking during the processing of the end cover is reduced, so as to ensure a high processing accuracy and improve the yield rate of the product.

[0015] 2. In the present invention, the "V"-shaped front end of the clamping member is particularly suitable for clamping the outer edge of a circular end cover, so as to quickly achieve the purpose of secondary clamping of the relatively common circular end cover and ensure the machining accuracy of the subsequent end cover.

[0016] 3. In the present invention, by adaptively deforming the two movable plates, the purpose of secondary clamping of the outer edge of a relatively special rectangular generator end cover can be achieved, which improves the versatility and applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of the present invention; Figure 2 is a schematic structural diagram of the clamping member of the present invention; Figure 3 is a side view of the connection situation of the clamping member and the supporting and limiting member of the present invention; Figure 4 is a structural split view of the clamping member and the supporting and limiting member of the present invention; Figure 5 is an operation schematic diagram when the present invention performs secondary clamping on a circular generator end cover; Figure 6 is an operation schematic diagram when the present invention performs secondary clamping on a rectangular generator end cover.

[0018] In the figure: 1. Installation base plate; 2. Axial clamping assembly; 21. Installation cross base; 22. Chuck; 23. Linear displacement member; 3. Radial clamping assembly; 31. Clamping member; 311. Fixed plate; 312. Movable plate; 3121. Sub-movable piece; 3122. Connecting ring; 3123. Insertion rod; 3124. Connecting block; 313. Telescopic member; 3131. Telescopic cylinder; 3132. Cross beam; 32. Supporting and limiting member; 321. Right-angled trapezoidal groove; 322. Limiting slot; 323. Rectangular opening; 4. First support column; 5. Second support column. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Refer to Figures 1-3As shown in the figure, the present invention provides an assembly tooling for a generator end cover machining center, including a mounting base plate 1, an axial clamping assembly 2, a radial clamping assembly 3 and a second support column 5. The mounting base plate 1 can be fixed on the machine tool by bolts or the like; two pairs of first support columns 4 are evenly installed on the top surface of the mounting base plate 1; the axial clamping assembly 2 is installed on the two pairs of first support columns 4; the radial clamping assembly 3 is installed above the axial clamping assembly 2. The radial clamping assembly 3 includes a clamping member 31 and a limiting member 32 that are closely arranged up and down and engaged with each other; the second support column 5 is provided as a pair and is used to fix the radial clamping assembly 3 on the axial clamping assembly 2. Among them, the axial clamping assembly 2 is used to clamp the bearing mounting hole in the middle of the generator end cover, which is the first clamping. The radial clamping assembly 3 is used to cooperate with the axial clamping assembly 2 to clamp the outer edge of the generator end cover, which is the second clamping. The second clamping is achieved by driving the generator end cover by the axial clamping assembly 2 to approach the radial clamping assembly 3 and finally pressing it tightly on the basis of the first clamping. Through the two clamping operations, compared with the single clamping in the prior art, the clamping operation on the outer edge of the generator end cover is increased. Therefore, when machining a generator end cover with a relatively thin shell wall, the clamping and fixing ability of the end cover can be improved, and the occurrence of shaking and vibration during the end cover machining process can be reduced, thereby ensuring a high machining accuracy and improving the yield rate of the product.

[0021] Specifically, the axial clamping assembly 2 includes a mounting cross seat 21. A linear displacement member 23 is installed in the narrow slot in the middle of the mounting cross seat 21, and a chuck 22 is cooperatively installed on the linear displacement member 23. The chuck 22 is specifically composed of a chuck body, movable jaws and a jaw driving mechanism. The chuck body, movable jaws and jaw driving mechanism are mature technologies in the prior art, so they will not be elaborated here. The movable jaws move together to the side away from the axis of the chuck body to achieve the purpose of clamping the bearing mounting hole in the middle of the generator end cover. The linear displacement member 23 can be realized by using a mature ball screw pair structure in the prior art, which is mainly composed of a screw and a nut. It is the most accurate and commonly used transmission device in transmission machinery, so it will not be elaborated here. The purpose is to move the end cover after the first clamping on the axial clamping assembly 2 close to the radial clamping assembly 3, and finally achieve the purpose of pressing tightly, so as to complete the second clamping.

[0022] Furthermore, the clamping member 31 includes a fixing plate 311 and a movable plate 312. The movable plate 312 is provided with two, and is respectively located on both sides of the fixing plate 311 close to the end of the axial clamping assembly 2. The two movable plates 312 and the fixing plate 311 together form a "V"-shaped front end, which is used to perform the second clamping on the generator end cover that has been first clamped on the axial clamping assembly 2. The "V"-shaped front end is particularly suitable for clamping the outer edge of a circular end cover, so as to quickly achieve the purpose of the second clamping of a relatively common circular end cover and ensure the machining accuracy of the subsequent end cover.

[0023] In a further embodiment, in actual processing operations, circular end caps are more common, but there are also quite a few rectangular end caps. In order to improve the versatility and applicability of the device, the following further improvements are made to the specific structure of the radial clamping assembly 3: Refer to Figures 2-4 As shown, the movable plate 312 is composed of a plurality of adjacent sub-movable pieces 3121. The overall conventional state of the movable plate 312 is set to a right triangle structure, and the lengths of the sub-movable pieces 3121 in the same movable plate 312 gradually decrease; both ends of each sub-movable piece 3121 are sequentially set as inclined surfaces and flat surfaces. In this way, in the initial state, the inclined surfaces of multiple sub-movable pieces 3121 in the same group are tiled together to form one hypotenuse of the deep "V"-shaped abutting groove, achieving a better clamping purpose for the circular end cap. A connecting ring 3122 is fixedly connected to the flat end of each sub-movable piece 3121. A plug rod 3123 is inserted among a group of connecting rings 3122 on the same side, and a connecting block 3124 is fixedly sleeved at one end of the plug rod 3123 away from the axial clamping assembly 2; a rectangular opening 323 is opened at one end of the support and limit member 32 close to the axial clamping assembly 2 for the axial clamping assembly 2 for feeding to move. Two right trapezoidal grooves 321 are symmetrically opened on the surface of the support and limit member 32 with respect to the rectangular opening 323. Two groups of limit slots 322 matching the two groups of sub-movable pieces 3121 are opened in the two right trapezoidal grooves 321. The right trapezoidal groove 321 is specifically a combination of a rectangle and a right triangle. The two right trapezoidal grooves 321 and the two groups of limit slots 322 are used to provide support and limit for the two groups of sub-movable pieces 3121 in the two movable plates 312 after deformation and reset, improving the structural strength and compressive capacity of each single sub-movable piece 3121; Among them, the sub-movable piece 3121 can translate in the limit slot 322 that is slidably inserted and matched with it in a direction perpendicular to the axis of the telescopic cylinder 3131. In addition, the clamping member 31 further includes a telescopic member 313. The telescopic member 313 includes a telescopic cylinder 3131 fixed to the top of the fixed plate 311 and a cross beam 3132 fixedly installed at the output end of the telescopic cylinder 3131. The two connecting blocks 3124 are respectively fixed to both ends of the cross beam 3132. The telescopic movement of the output end of the telescopic cylinder 3131 can drive the cross beam 3132 to translate along the direction of the translation of the chuck 22, thereby driving the two plug rods 3123 to gradually withdraw from or gradually insert into the two groups of connecting rings 3122.

[0024] The above structural design is used for two working conditions respectively, and the specific operation steps are as follows: Refer to Figure 1 and Figure 5As shown in the figure, first, a chuck 22 can be used to clamp the bearing mounting hole in the middle of the circular end cover once. After that, when the circular generator end cover needs to be clamped for the second time, the linear displacement member 23 is activated to drive the chuck 22 and the circular end cover thereon to translate to the right. At this time, both insertion rods 3123 are inserted into the two sets of connecting rings 3122. The two movable plates 312 do not deform and are set in their normal states, both maintaining their initial right triangle structures. In this way, the two movable plates 312 and the fixed plate 311 form a deep "V"-shaped abutting groove. The chuck 22 passes through the rectangular opening 323 in the limiting member 32 and abuts the circular end cover into the deep "V"-shaped abutting groove. Finally, the two movable plates 312 cooperate with the axial clamping assembly 2 for feeding to achieve the purpose of secondarily clamping the outer edge of the circular generator end cover, reducing the occurrence of vibration during the processing of the circular end cover, thereby ensuring the subsequent processing accuracy of the end cover and improving the yield rate of the product.

[0025] Referring to Figure 1 and Figure 6 As shown in the figure, for the rectangular end cover, a chuck 22 can also be used to clamp the bearing mounting hole in the middle of it once. After that, when the rectangular generator end cover is clamped for the second time, during the process of the axial clamping assembly 2 driving the rectangular end cover thereon to translate to the right, the rectangular end cover presses against the overall hypotenuse of the two movable plates 312. Due to the special structure of the right-angled sides of the rectangular end cover, after it abuts tightly against the overall hypotenuse of the two movable plates 312, the clamping effect is very average, and there will be a jumping vibration situation after being stressed during processing. Therefore, at this time, the two movable plates 312 need to be adaptively deformed; Specifically, the telescopic cylinder 3131 is activated to drive the cross beam 3132 to translate to the side away from the chuck 22. In this way, the two insertion rods 3123 can be gradually withdrawn from the two sets of connecting rings 3122, cooperating with the retracting action of the right-angled sides of the rectangular generator end cover on the corresponding sub-movable pieces 3121 on both sides. This is due to the design characteristics of the end structure of the sub-movable pieces 3121, that is, the lengths of the sub-movable pieces 3121 in the same movable plate 312 are gradually decreasing, and both ends of each sub-movable piece 3121 are sequentially set as inclined planes and planes; then the two movable plates 312 will undergo adaptive deformation; among them, the retracting of the sub-movable pieces 3121 will be restricted by the corresponding limiting slots 322, that is, it will translate in a direction perpendicular to the axis of the telescopic cylinder 3131. In this way, the retracting action of the sub-movable pieces 3121 is more orderly, and subsequent resetting is more convenient. Moreover, the two right trapezoidal slots 321 symmetrically arranged in the limiting member 32 serve the purpose of storing and supporting the sub-movable pieces 3121 after retraction, preventing the sub-movable pieces 3121 from falling off, achieving the purpose of orderly regulation, and making the device highly stable, efficient and reliable when used; Finally, when there is no further situation of pushing back and forth on the sub-activity pieces 3121 on both sides, the right-angle side of the rectangular end cap will press tightly against the sliding side of the last sub-activity piece 3121 that "cannot be pushed back any further", so that the pressed end face of the rectangular end cap and the sliding side of the last pair of sub-activity pieces 3121 that "cannot be pushed back any further" are closely pressed together. When the two planes are pressed tightly together, there will be no jumping vibration or shaking vibration. Thus, through the cooperation of the two movable plates 312 and the axial clamping assembly 2 for feeding, the purpose of secondary clamping of the outer edge of the rectangular generator end cap is achieved, thereby reducing the occurrence of shaking vibration during the processing of the rectangular end cap, and further ensuring the processing accuracy of the subsequent end cap and improving the yield rate of the product.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembly tooling for a generator end cover processing center, characterized in that, Including: An installation base plate, on the top surface of which two pairs of first support columns are evenly installed; An axial clamping assembly, which is installed on the two pairs of first support columns; A radial clamping assembly, which is installed above the axial clamping assembly. The radial clamping assembly includes a clamping member and a limiting member that are closely arranged up and down and engaged with each other. The clamping member includes a fixed plate and a movable plate. There are two movable plates, which are respectively located on both sides of the end of the fixed plate close to the axial clamping assembly. The two movable plates and the fixed plate together form a "V"-shaped front end for secondarily clamping the generator end cover that has been clamped once by the axial clamping assembly. The movable plate is composed of a plurality of closely arranged sub-movable pieces, and the whole movable plate is in a triangular structure. The lengths of the sub-movable pieces in the same movable plate gradually decrease. The two ends of each sub-movable piece are sequentially arranged as inclined surfaces and flat surfaces, and a connecting ring is fixedly connected to the flat end of each sub-movable piece. A plug rod is inserted among a group of connecting rings on the same side, and a connecting block is fixedly sleeved at the end of the plug rod far from the axial clamping assembly. The clamping member further includes a telescopic member. The telescopic member includes a telescopic cylinder fixed on the top of the fixed plate and a cross beam fixedly installed on the output end of the telescopic cylinder, and the two connecting blocks are respectively fixed at both ends of the cross beam; A pair of second support columns, which are used to fix the radial clamping assembly on the axial clamping assembly; Among them, the axial clamping assembly is used to clamp the bearing installation hole in the middle of the generator end cover, which is the first clamping. The radial clamping assembly is used to cooperate with the axial clamping assembly to clamp the outer edge of the generator end cover, which is the second clamping.

2. The assembly tooling for a generator end cover machining center according to claim 1, characterized in that: The axial clamping assembly includes an installation cross seat. A linear displacement member is installed in the narrow slit in the middle of the installation cross seat, and a chuck is cooperatively installed on the linear displacement member. The chuck is specifically composed of three parts: a chuck body, movable jaws and a jaw driving mechanism. The movable jaws move together to the side away from the axis of the chuck body to achieve the purpose of clamping the bearing installation hole in the middle of the generator end cover.

3. The assembly tooling for a generator end cover machining center according to claim 1, characterized in that: One end of the limiting member close to the axial clamping assembly is provided with a rectangular opening for the axial clamping assembly for feeding to move. Two right trapezoidal grooves are symmetrically opened on the surface of the limiting member with respect to the rectangular opening, and two groups of limiting slots matching the two groups of sub-movable pieces are respectively opened in the two right trapezoidal grooves.

4. The assembly tooling for a generator end cover machining center according to claim 3, characterized in that: The sub-movable piece can translate in the limiting slot that is matched with it and for it to slide and insert in the direction perpendicular to the axis of the telescopic cylinder.

5. The assembly tooling for a generator end cover machining center according to claim 4, characterized in that: When secondarily clamping the circular generator end cover, both plug rods are inserted into the two groups of connecting rings, and the two movable plates do not deform. The two movable plates cooperate with the axial clamping assembly for feeding to achieve the secondary clamping of the outer edge of the circular generator end cover.

6. The assembly tooling for a generator end cover machining center according to claim 4, characterized in that: When secondarily clamping the rectangular generator end cover, the two plug rods are gradually withdrawn from the two groups of connecting rings. The right-angle sides of the rectangular generator end cover push back the corresponding sub-movable pieces on both sides, and the two movable plates undergo adaptive deformation. The two movable plates cooperate with the axial clamping assembly for feeding to achieve the secondary clamping of the outer edge of the rectangular generator end cover.

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