Cage auxiliary clamping device and clamping equipment of machining center

Abstract

This application provides a cage auxiliary clamping device and a clamping device for a machining center. The cage auxiliary clamping device includes a mounting bracket, a bearing, a clamping assembly, a clamping assembly, a fixing plate, and a threaded locking element. The bearing is mounted in a mounting hole of the mounting bracket, and the clamping assembly is used to mount the bearing in the mounting hole. The clamping assembly includes a clamping shaft and a clamping block. The first end of the clamping shaft is mounted in the inner ring hole of the bearing, and the second end of the clamping shaft has a mounting notch. A mounting plane is formed within the mounting notch, and the second end face of the clamping shaft also has a clamping hole for receiving one end of the cage. The clamping hole extends to the mounting plane, and the clamping block is fixedly connected to the mounting plane. The clamping block is positioned opposite the clamping hole and abuts against the cage. The threaded locking element passes through the fixing plate, with one end threadedly connected to the clamping shaft and the other end abutting against the fixing plate. This improves the machining accuracy of the cage.

Description

Technical Field

[0001] This invention relates to the technical field of machining centers, and in particular to a cage-assisted clamping device and a clamping device for machining centers. Background Technology

[0002] A cage is used to hold a part in place; it is a type of mounting bracket. The typical machining process for a cage involves clamping the first end of the cage onto an indexing head and securing the second end with an ejector pin. However, because cages have irregular structures, the forces acting on them during machining are irregular, and the second end is only held in place by the ejector pin. This makes the cage's position prone to slight shifts, resulting in poor machining accuracy. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a cage auxiliary clamping device and a clamping device for machining centers to improve the machining accuracy of cages.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] A cage auxiliary clamping device, comprising:

[0006] The mounting bracket includes a base and a support plate, wherein a first end of the support plate is fixedly connected to the base, and a mounting hole is formed at a second end of the support plate;

[0007] A bearing is located in the mounting hole and is sleeved with the support plate, and the bearing has an inner ring hole;

[0008] The clamping assembly includes a plurality of first clamping blocks and a plurality of second clamping blocks. The plurality of first clamping blocks are fixedly connected to one side of the support plate and are evenly spaced along the circumference of the mounting holes. Each first clamping block abuts against one side of the bearing. The plurality of second clamping blocks are fixedly connected to the other side of the support plate and are evenly spaced along the circumference of the mounting holes. Each second clamping block abuts against the other side of the bearing.

[0009] A clamping assembly includes a clamping shaft and a clamping block. The first end of the clamping shaft is located in the inner ring hole and is sleeved with the bearing. A first threaded hole is formed on the first end face of the clamping shaft. A mounting notch is formed on the second end of the clamping shaft. A mounting plane is formed in the mounting notch on the clamping shaft. A clamping hole is also formed on the second end face of the clamping shaft. The clamping hole is used to receive one end of a retainer. The clamping hole extends to the mounting plane. The clamping block is fixedly connected to the mounting plane and is disposed opposite to the clamping hole and is used to abut against the retainer.

[0010] A fixing plate abuts against the bearing on the side adjacent to the second pressure block, the fixing plate having a first clearance hole; and

[0011] A threaded locking member is inserted through the first clearance hole, one end of which is threaded into the first threaded hole, and the other end of which abuts against the fixing plate.

[0012] In one embodiment, the clamping assembly further includes a limiting shaft located within the clamping hole, with a first end of the limiting shaft fixedly connected to the clamping shaft and a second end of the limiting shaft used to abut against the end face of the retainer.

[0013] In one embodiment, the limiting shaft includes a limiting post and a tapered end. The limiting post is located inside the clamping hole, and the first end of the limiting post is fixedly connected to the clamping shaft. The tapered end is located inside the clamping hole and is fixedly connected to the second end of the limiting post. The end face of the tapered end facing away from the limiting post forms an arc surface.

[0014] In one embodiment, the cage auxiliary clamping device further includes a locking member, the clamping block having a second clearance hole, the clamping shaft having a second threaded hole, the locking member passing through the second clearance hole, the first end of the locking member being threadedly connected to the second threaded hole, and the second end of the locking member abutting against the clamping block.

[0015] In one embodiment, the clamping shaft has a positioning protrusion formed on the mounting plane, and the positioning protrusion abuts against the edge of the clamping block.

[0016] In one embodiment, the surface of the positioning bump is provided with an arc surface.

[0017] In one embodiment, the arc surface is hemispherical.

[0018] In one embodiment, the clamping assembly further includes a plurality of first screws, each of which is correspondingly inserted through a plurality of first pressure blocks, and the first end of each first screw is threaded to the support plate, and the second end of each first screw abuts against the first pressure block.

[0019] In one embodiment, the clamping assembly further includes a plurality of second screws, which are respectively inserted through a plurality of second pressure blocks, and the first end of each second screw is threaded to the support plate, and the second end of each second screw abuts against the second pressure block.

[0020] A clamping device for a machining center includes the cage-assisted clamping device described in any of the above embodiments. The clamping device for the machining center further includes a four-axis indexing head, which is arranged at intervals relative to the clamping holes.

[0021] Compared with the prior art, the present invention has at least the following advantages:

[0022] The aforementioned cage auxiliary clamping device replaces the traditional ejector pin, allowing the end of the cage away from the indexing head to be clamped between the clamping block and the clamping shaft. Furthermore, the end of the cage away from the indexing head is housed in the clamping hole and abuts against the hole wall, resulting in a larger force-bearing area at the end of the cage away from the indexing head. This improves the positional stability of the end of the cage away from the indexing head, thereby improving the machining accuracy of the cage. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a cage auxiliary clamping device according to one embodiment;

[0025] Figure 2 for Figure 1 Another schematic diagram of the cage auxiliary clamping device shown;

[0026] Figure 3 for Figure 1 Another schematic diagram of the cage auxiliary clamping device shown;

[0027] Figure 4 for Figure 3 The cross-sectional view of the cage auxiliary clamping device shown along line AA;

[0028] Figure 5 for Figure 4 An enlarged schematic diagram of the cage auxiliary clamping device at point B is shown;

[0029] Figure 6 A partial cross-sectional view of a cage-assisted clamping device according to another embodiment. Detailed Implementation

[0030] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] This application provides a cage auxiliary clamping device, including a mounting frame, a bearing, a clamping assembly, a fixing plate, and a threaded locking element. The mounting frame includes a base and a supporting plate. A first end of the supporting plate is fixedly connected to the base, and a mounting hole is formed at the second end of the supporting plate. The bearing is located in the mounting hole and sleeved with the supporting plate, and the bearing has an inner ring hole. The clamping assembly includes a plurality of first pressure blocks and a plurality of second pressure blocks. The plurality of first pressure blocks are fixedly connected to one side of the supporting plate and are evenly spaced along the circumference of the mounting hole, with each first pressure block abutting against one side of the bearing. The plurality of second pressure blocks are fixedly connected to the other side of the supporting plate and are evenly spaced along the circumference of the mounting hole, with each second pressure block abutting against the bearing. On the other side; the clamping assembly includes a clamping shaft and a clamping block. The first end of the clamping shaft is located in the inner ring hole and is sleeved with the bearing. A first threaded hole is formed on the first end face of the clamping shaft. An installation notch is formed on the second end of the clamping shaft. An installation plane is formed in the installation notch of the clamping shaft. A clamping hole is also formed on the second end face of the clamping shaft. The clamping hole is used to receive one end of the retainer. The clamping hole extends to the installation plane. The clamping block is fixedly connected to the installation plane. The clamping block is arranged opposite to the clamping hole and is used to abut against the retainer. A fixing plate abuts against the side of the bearing adjacent to the second pressure block. The fixing plate has a first clearance hole. A threaded locking member passes through the first clearance hole. One end of the threaded locking member is threaded into the first threaded hole. The other end of the threaded locking member abuts against the fixing plate.

[0034] The aforementioned cage auxiliary clamping device replaces the traditional ejector pin, allowing the end of the cage away from the indexing head to be clamped between the clamping block and the clamping shaft. Furthermore, the end of the cage away from the indexing head is housed in the clamping hole and abuts against the hole wall, resulting in a larger force-bearing area at the end of the cage away from the indexing head. This improves the positional stability of the end of the cage away from the indexing head, thereby improving the machining accuracy of the cage.

[0035] To better understand the technical solution and beneficial effects of this application, the following detailed description is provided in conjunction with specific embodiments:

[0036] like Figures 1 to 4As shown, a cage auxiliary clamping device 10 of one embodiment includes a mounting frame 100, a bearing 200, a clamping assembly 300, a clamping assembly 400, a fixing plate 500, and a threaded locking member 600. The mounting frame 100 includes a base 110 and a support plate 120. The first end of the support plate 120 is fixedly connected to the base 110, and the second end of the support plate 120 has a mounting hole 121. The bearing 200 is located in the mounting hole 121 and is sleeved with the support plate 120. The bearing 200 has an inner ring hole 201. The clamping assembly 300 includes a plurality of first clamping blocks 310 and a plurality of second clamping blocks 320. The plurality of first clamping blocks 310 are fixedly connected to one side of the support plate 120 and are evenly spaced along the circumference of the mounting hole 121. Each first clamping block 310 abuts against one side of the bearing 200. The plurality of second clamping blocks 320 are fixedly connected to the other side of the support plate 120 and are evenly spaced along the circumference of the mounting hole 121. Each second clamping block 320 abuts against the other side of the bearing 200 so that the bearing 200 is installed in the mounting hole 121. The clamping assembly 400 includes a clamping shaft 410 and a clamping block 420. The first end of the clamping shaft 410 is located in the inner ring hole 201 and is sleeved with the bearing 200. The first end face of the clamping shaft 410 forms a first threaded hole 411. The fixing plate 500 abuts against the side of the bearing 200 adjacent to the second pressure block 320. The fixing plate 500 forms a first clearance hole 501. The threaded locking member 600 passes through the first clearance hole 501. One end of the threaded locking member 600 is threaded into the first threaded hole 411, and the other end of the threaded locking member 600 abuts against the fixing plate 500, so that the clamping shaft 410 is fixedly connected to the inner ring of the bearing 200.

[0037] like Figure 5 As shown, further, a mounting notch 412 is formed at the second end of the clamping shaft 410, and a mounting plane 413 is formed in the mounting notch 412. A clamping hole 414 is also formed on the second end face of the clamping shaft 410. The clamping hole 414 is used to receive one end of the retainer 20, and the hole wall of the clamping hole 414 is used to abut against one end of the retainer 20. The clamping hole 414 extends to the mounting plane 413. The clamping block 420 is fixedly connected to the mounting plane 413, and the clamping block 420 is arranged opposite to the clamping hole 414 and is used to abut against the retainer 20, so that the clamping block 420 and the clamping shaft 410 are used together to clamp one end of the retainer 20.

[0038] It is understandable that the other end of the cage 20 is clamped to the indexing head, so that both ends of the cage 20 are clamped.

[0039] The aforementioned cage auxiliary clamping device 10 replaces the traditional ejector pin, causing the end of the cage 20 away from the indexing head to be clamped between the clamping block 420 and the clamping shaft 410. Furthermore, the end of the cage 20 away from the indexing head is received in the clamping hole 414 and abuts against the wall of the clamping hole 414, resulting in a larger force-bearing area at the end of the cage 20 away from the indexing head. This improves the positional stability of the end of the cage 20 away from the indexing head, thereby improving the machining accuracy of the cage 20.

[0040] like Figure 5 As shown, in one embodiment, the clamping assembly 400 further includes a limiting shaft 430, which is located inside the clamping hole 414. The first end of the limiting shaft 430 is fixedly connected to the clamping shaft 410, and the second end of the limiting shaft 430 is used to abut against the end face of the retainer 20 to restrict the movement of the retainer 20 along the extension direction, thereby improving the clamping stability of the retainer 20, that is, improving the positional stability of the retainer 20, and thus improving the machining accuracy of the retainer 20.

[0041] like Figure 5 As shown, in one embodiment, the limiting shaft 430 includes a limiting post 431 and a tapered end 432. The limiting post 431 is located in the clamping hole 414, and the first end of the limiting post 431 is fixedly connected to the clamping shaft 410. The tapered end 432 is located in the clamping hole 414 and is fixedly connected to the second end of the limiting post 431. The end face of the tapered end 432 facing away from the limiting post 431 forms an arc surface to avoid problems with the retainer 20 of the limiting shaft 430.

[0042] like Figure 5 As shown, in one embodiment, the cage auxiliary clamping device 10 further includes a locking member 700. The clamping block 420 has a second clearance hole 423, and the clamping shaft 410 has a second threaded hole 415. The locking member 700 passes through the second clearance hole 423, and the first end of the locking member 700 is threaded into the second threaded hole 415. The second end of the locking member 700 abuts against the clamping block 420. In this embodiment, after one end of the cage 20 is received in the clamping hole 414, by turning the locking member 700, the clamping block 420 is fixed to the clamping shaft 410 by the locking member 700, and the clamping block 420 abuts against the outer wall of the clamping shaft 410, so that the clamping block 420 and the hole wall of the clamping hole 414 are used together to clamp the cage 20.

[0043] like Figure 1As shown, in one embodiment, the clamping shaft 410 has a positioning protrusion 410a formed on the mounting plane 413, and the positioning protrusion 410a abuts against the edge of the clamping block 420. In this embodiment, before tightening the locking member 700, that is, before fixing the clamping block 420, the edge of the clamping block 420 is first abutted against the positioning protrusion 410a so that the clamping block 420 is positioned opposite to the clamping hole 414, and then the locking member 700 is tightened so that the clamping block 420 abuts against the retainer 20 inside the clamping block 420. Due to the positioning effect of the positioning protrusion 410a, the clamping block 420 can be aligned with the clamping hole 414 more quickly, improving the alignment efficiency of the clamping block 420, and thus improving the clamping efficiency of the retainer 20.

[0044] like Figure 1 As shown, in one embodiment, the surface of the positioning protrusion 410a is provided with an arc surface to reduce the wear of the positioning protrusion 410a on the clamping block 420. In one embodiment, the arc surface is hemispherical.

[0045] like Figure 1 As shown, in one embodiment, the clamping assembly 300 further includes a plurality of first screws 330, which are respectively disposed in a plurality of first pressure blocks 310. The first end of each first screw 330 is threaded to the support plate 120, and the second end of each first screw 330 abuts against the first pressure block 310, so that each first pressure block 310 is fixedly connected to the support plate 120 by the corresponding first screw 330.

[0046] like Figure 1 As shown, in one embodiment, the clamping assembly 300 further includes a plurality of second screws 340, which are respectively disposed in a plurality of second pressure blocks 320. The first end of each second screw 340 is threaded to the support plate 120, and the second end of each second screw 340 abuts against the second pressure block 320, so that each second pressure block 320 is fixedly connected to the support plate 120 by the corresponding second screw 340.

[0047] To increase the stress-bearing area of ​​the cage 20, such as Figure 6 As shown, in one embodiment, a clamping groove 421 is formed on the side of the clamping block 420 opposite to the clamping hole 414. In this embodiment, the clamping groove 421 is adapted to one end of the retainer 20. After the clamping block 420 is clamped, one end of the retainer 20 is still received in the clamping groove 421 and abuts against the groove wall of the clamping groove 421, increasing the force-bearing area of ​​the retainer 20, improving the clamping stability of the retainer 20, and thus improving the machining accuracy of the retainer 20.

[0048] In one embodiment, the clamping groove 421 is an arc groove to increase the contact area between the groove wall of the clamping groove 421 and the cage 20, thereby further improving the clamping stability and thus improving the machining accuracy of the cage 20.

[0049] It is understandable that since the clamping block 420 is locked by the locking member 700, and the locking member 700 is threadedly connected to the clamping shaft 410, when the clamping time of the cage auxiliary clamping device 10 is long, that is, when the processing time of the cage 20 is long, the locking member 700 is more likely to be loosened by the vibration of the machining center, which makes the clamping stability of the clamping block 420 need to be improved.

[0050] To prevent the locking element 700 from loosening, such as Figure 6 As shown, in one embodiment, the cage auxiliary clamping device 10 further includes an anti-loosening elastic washer 800. The anti-loosening elastic washer 800 is located between the clamping block 420 and the clamping shaft 410. The two opposite sides of the anti-loosening elastic washer 800 elastically abut against the clamping block 420 and the clamping shaft 410, respectively, so that the anti-loosening elastic washer 800 has a tendency to push the clamping block 420 away from the clamping shaft 410. This makes the locking member 700 maintain a relatively stable connection with the clamping block 420 and the clamping shaft 410, respectively, so that the stability of the locking member 700 is high, the loosening of the locking member 700 is suppressed, thereby improving the clamping stability of the cage auxiliary clamping device 10 and improving the machining accuracy of the cage 20.

[0051] like Figure 6 As shown, in one embodiment, a receiving groove 422 is formed on the side of the clamping block 420 adjacent to the clamping shaft 410. The anti-loosening elastic gasket 800 is located in the receiving groove 422 and abuts against the side wall of the receiving groove 422, so that the side wall of the receiving groove 422 restricts the movement of the anti-loosening elastic gasket 800 along the mounting plane 413, thereby improving the positional stability of the anti-loosening elastic gasket 800 and ensuring the anti-loosening effect of the anti-loosening elastic gasket 800.

[0052] This application also provides a clamping device for a machining center, including the cage auxiliary clamping device 10 described in any of the above embodiments. The clamping device for the machining center also includes a four-axis indexing head, which is arranged at intervals relative to the clamping hole 414.

[0053] like Figures 1 to 4As shown, in one embodiment, the cage auxiliary clamping device 10 includes a mounting frame 100, a bearing 200, a clamping assembly 300, a clamping assembly 400, a fixing plate 500, and a threaded locking member 600. The mounting frame 100 includes a base 110 and a support plate 120. The first end of the support plate 120 is fixedly connected to the base 110, and the second end of the support plate 120 has a mounting hole 121. The bearing 200 is located in the mounting hole 121 and is sleeved with the support plate 120. The bearing 200 has an inner ring hole 201. The clamping assembly 300 includes a plurality of first clamping blocks 310 and a plurality of second clamping blocks 320. The plurality of first clamping blocks 310 are fixedly connected to one side of the support plate 120 and are evenly spaced along the circumference of the mounting hole 121. Each first clamping block 310 abuts against one side of the bearing 200. The plurality of second clamping blocks 320 are fixedly connected to the other side of the support plate 120 and are evenly spaced along the circumference of the mounting hole 121. Each second clamping block 320 abuts against the other side of the bearing 200 so that the bearing 200 is installed in the mounting hole 121. The clamping assembly 400 includes a clamping shaft 410 and a clamping block 420. The first end of the clamping shaft 410 is located in the inner ring hole 201 and is sleeved with the bearing 200. The first end face of the clamping shaft 410 forms a first threaded hole 411. The fixing plate 500 abuts against the side of the bearing 200 adjacent to the second pressure block 320. The fixing plate 500 forms a first clearance hole 501. The threaded locking member 600 passes through the first clearance hole 501. One end of the threaded locking member 600 is threaded into the first threaded hole 411, and the other end of the threaded locking member 600 abuts against the fixing plate 500, so that the clamping shaft 410 is fixedly connected to the inner ring of the bearing 200.

[0054] like Figure 5 As shown, further, a mounting notch 412 is formed at the second end of the clamping shaft 410, and a mounting plane 413 is formed in the mounting notch 412. A clamping hole 414 is also formed on the second end face of the clamping shaft 410. The clamping hole 414 is used to receive one end of the retainer 20, and the hole wall of the clamping hole 414 is used to abut against one end of the retainer 20. The clamping hole 414 extends to the mounting plane 413. The clamping block 420 is fixedly connected to the mounting plane 413, and the clamping block 420 is arranged opposite to the clamping hole 414 and is used to abut against the retainer 20, so that the clamping block 420 and the clamping shaft 410 are used together to clamp one end of the retainer 20.

[0055] It is understandable that the other end of the cage 20 is clamped to the indexing head, so that both ends of the cage 20 are clamped.

[0056] The clamping device of the aforementioned machining center, because the cage auxiliary clamping device 10 replaces the traditional ejector pin, clamps the end of the cage 20 away from the indexing head between the clamping block 420 and the clamping shaft 410. Moreover, the end of the cage 20 away from the indexing head is received in the clamping hole 414 and abuts against the hole wall of the clamping hole 414, so that the force-bearing area of ​​the end of the cage 20 away from the indexing head is larger, thereby improving the positional stability of the end of the cage 20 away from the indexing head, and thus improving the machining accuracy of the cage 20.

[0057] Compared with the prior art, the present invention has at least the following advantages:

[0058] The aforementioned cage auxiliary clamping device 10 replaces the traditional ejector pin, causing the end of the cage 20 away from the indexing head to be clamped between the clamping block 420 and the clamping shaft 410. Furthermore, the end of the cage 20 away from the indexing head is received in the clamping hole 414 and abuts against the wall of the clamping hole 414, resulting in a larger force-bearing area at the end of the cage 20 away from the indexing head. This improves the positional stability of the end of the cage 20 away from the indexing head, thereby improving the machining accuracy of the cage 20.

[0059] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A cage assist clamping device, characterized by, The utility model relates to a kind of auxiliary clamping device of retaining frame, including: mounting frame, including base and support vertical plate, the first end of the support vertical plate is fixedly connected to the base, the second end of the support vertical plate is formed with mounting hole;Bearing, in the mounting hole and with the support vertical plate sleeve joint, the bearing is formed with inner ring hole;Compression assembly, including multiple first pressing block and multiple second pressing block, multiple the first pressing block is fixedly connected to one side of the support vertical plate, multiple the first pressing block is evenly spaced along the circumference of the mounting hole, and each the first pressing block is abutted to one side of the bearing, multiple the second pressing block is fixedly connected to the other side of the support vertical plate, multiple the second pressing block is evenly spaced along the circumference of the mounting hole, and each the second pressing block is abutted to the other side of the bearing;Clamping assembly, including clamping shaft and clamping block, the first end of the clamping shaft is located in the inner ring hole and with the bearing sleeve joint, the first end surface of the clamping shaft is formed with first threaded hole, the second end of the clamping shaft is formed with installation gap, the clamping shaft is formed with installation plane in the installation gap, the second end surface of the clamping shaft is also formed with clamping hole, the clamping hole is used to accommodate one end of retaining frame, the clamping hole extends to the installation plane, the clamping block is fixedly connected on the installation plane, and the clamping block is oppositely arranged with the clamping hole and is used to abut retaining frame;Fixed plate, abutted to the side of the bearing adjacent the second pressing block, the fixed plate is formed with first avoid hole;And threaded locking piece, threaded in the first avoid hole, one end of the threaded locking piece is screwed in the first threaded hole, the other end of the threaded locking piece is abutted to the fixed plate. The clamping assembly further includes a limiting shaft, the limiting shaft is located in the clamping hole, and the first end of the limiting shaft is fixedly connected with the clamping shaft, the second end of the limiting shaft is used to abut the end surface of the retaining frame. The limiting shaft includes a limiting column and a tapered end portion, the limiting column is located in the clamping hole, and the first end of the limiting column is fixedly connected with the clamping shaft, the tapered end portion is located in the clamping hole and is fixedly connected with the second end of the limiting column, and the end surface of the tapered end portion away from the limiting column is formed with a circular arc surface. The retaining frame auxiliary clamping device further includes a locking piece, the clamping block is formed with a second avoid hole, the clamping shaft is formed with a second threaded hole, the locking piece is threaded in the second avoid hole, the first end of the locking piece is screwed in the second threaded hole, and the second end of the locking piece is abutted to the clamping block. The clamping shaft is formed with a positioning protrusion on the installation plane, and the positioning protrusion is abutted to the edge of the clamping block. The surface of the positioning protrusion is provided with a circular arc surface. The circular arc surface is in the shape of a hemisphere.

2. Cage auxiliary clamping device according to claim 1, characterized in that The compression assembly further includes a plurality of first screws, and each of the plurality of first screws is threaded in one of the plurality of first pressing blocks, and the first end of each of the plurality of first screws is screwed in the support vertical plate, and the second end of each of the plurality of first screws is abutted to the first pressing block.

3. Cage auxiliary clamping device according to claim 2, characterized in that ​ 4. Cage auxiliary clamping device according to claim 1, characterized in that ​ 5. Cage auxiliary clamping device according to claim 4, characterized in that ​ 6. Cage auxiliary clamping device according to claim 5, characterized in that ​ 7. Cage auxiliary clamping device according to claim 6, characterized in that ​ 8. The cage assist clamp of claim 1, wherein, ​ 9. Cage auxiliary clamping device according to claim 8, characterized in that The pressing assembly further comprises a plurality of second screws, each of the plurality of second screws is threaded through one of the plurality of second pressing blocks, and a first end of each of the second screws is threadedly connected to the support vertical plate, and a second end of each of the second screws abuts the second pressing block.

10. Clamping device of a machining center, characterized in that The machining center further comprises a four-axis indexing head, and the four-axis indexing head is arranged opposite to the clamping hole.

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