Condyle testing polishing device

Abstract

The utility model discloses a test condyle polishing device which comprises a test condyle placing frame, a polishing track and a polishing head sliding on the polishing track through a sliding block, the polishing track is of an arc-shaped structure and corresponds to a test condyle placed on the test condyle placing frame, a screw rod is connected to the side, close to the polishing head, of the sliding block, and the screw rod is connected with the polishing head. And the polishing head is connected to the corresponding end part of the screw rod through a first universal joint. The condyle testing polishing device is simple in structure, is used for automatic polishing of the condyle testing, improves the polishing uniformity, and reduces the working intensity.

Description

Technical Field

[0001] This utility model relates to the field of test tube production technology, and in particular to a test tube polishing device. Background Technology

[0002] A femoral test condyle is an instrument used in knee surgery to determine femoral positioning. It is a standalone instrument used in conjunction with an osteotomy guide and a femoral drill. The accuracy of intercondylar osteotomy positioning affects the stability of the prosthesis, increasing bone-prosthesis collision and wear. During total joint replacement surgery, a pre-installed femoral test condyle is needed to verify the correctness of the femoral osteotomy position. Currently, test condyles are mostly manufactured using machining methods, with surface roughness controlled by machining precision. However, this process is complex and requires processing from a single piece of material, resulting in high costs. While 3D printing technology has matured, the surface of 3D-printed test condyles often fails to meet usage requirements, necessitating polishing to improve surface roughness. However, the curved surface of the test condyle can only be manually ground and polished, leading to inefficiency and uneven polishing. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this invention is to provide a test tube polishing device to overcome the shortcomings of the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] This utility model discloses a test tube polishing device, including a test tube placement frame, a polishing track, and a polishing head that slides on the polishing track via a slider. The polishing track has an arc-shaped structure and is correspondingly arranged with the test tubes placed on the test tube placement frame. A screw is connected to the side of the slider near the polishing head, and the polishing head is connected to the corresponding end of the screw via a first universal joint.

[0006] Furthermore, in the above-mentioned test tube polishing device, the test tube placement frame includes a base plate, a mounting column perpendicular to the top of the base plate, and a number of support columns staggered on the mounting column.

[0007] Furthermore, in the above-mentioned test tube polishing device, the mounting column is provided with a plurality of threaded through holes, and the end of the support column near the mounting column is provided with an external thread that connects to the threaded through holes.

[0008] Furthermore, in the aforementioned test tube polishing device, the end of the support column facing away from the mounting column is connected to an electromagnet via a second universal joint.

[0009] Furthermore, in the above-mentioned test tube polishing device, the inner and outer sides of the polishing track are respectively provided with an inner arc groove and an outer arc groove. A rack is provided in the outer arc groove, and the bottom surface of the slider is respectively provided with a gear meshing with the rack and a roller rolling in the inner arc groove.

[0010] Furthermore, in the aforementioned test tube polishing device, the top surface of the slider is provided with a servo motor that drives the gear.

[0011] Furthermore, in the above-mentioned test tube polishing device, a connecting sleeve is provided on the side of the slider near the polishing head, and a threaded blind hole corresponding to the screw is provided at the end of the connecting sleeve near the polishing head.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] The test tube polishing device described in this utility model has a simple structure and is used for automated polishing of test tubes, improving the uniformity of polishing and reducing workload. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 The diagram shown is a schematic representation of the test tube polishing device in a specific embodiment of this utility model.

[0016] Figure 2 The diagram shown is a schematic diagram of the installation of the polishing track in a specific embodiment of this utility model.

[0017] Figure 3 The diagram shown is a structural schematic of the test tube placement frame in a specific embodiment of this utility model.

[0018] Figure 4 The image shown is a cross-sectional view of the polishing track in a specific embodiment of this utility model.

[0019] Figure 5 The diagram shown is a schematic representation of the meshing structure of a gear and a rack in a specific embodiment of this utility model. Detailed Implementation

[0020] Next, the technical solutions in the embodiments of the present utility model will be described in detail with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0023] Refer Figures 1 to 5 As shown, a condyle polishing device includes a condyle placement rack 1, a polishing track 2, and a polishing head 4 that slides on the polishing track 2 through a slider 3. The polishing track 2 is an arc-shaped structure and is correspondingly arranged with the condyle placed on the condyle placement rack 1. One side of the slider 3 close to the polishing head 4 is connected with a screw rod 5, and the polishing head 4 is connected to the corresponding end of the screw rod 5 through a first universal joint 6.

[0024] In this technical solution, the polishing track is an arc-shaped structure and corresponds to the surface curvature of the fixed condyle. During the reciprocating movement of the slider带动 the polishing head along the polishing track, the acting force of the polishing head on the condyle surface is basically kept consistent. When the distance between the condyle surface and the polishing head changes, the installation position of the polishing head can be adjusted through the screw rod, so as to adjust the acting force between the polishing head and the condyle surface and maintain the consistency of the polishing pressure, thereby improving the polishing accuracy. The first universal joint is a conventional universal joint or a spherical connector structure, etc., which can arbitrarily adjust the angle of the polishing head and lock it, improving the fit between the polishing head and the condyle surface. The polishing head is a conventional polishing cloth wheel or high-mesh sandpaper, etc., which is set according to actual use needs; this condyle polishing device has a simple structure, is used for the automatic polishing of condyles, improves the uniformity of polishing, and reduces the working intensity.

[0025] For example, see Figure 1 and Figure 3 As shown, the test tube placement frame 1 includes a base plate 11, a mounting column 12 perpendicular to the top of the base plate, and several support columns 13 staggered on the mounting column.

[0026] In this technical solution, the mounting column is fixed perpendicularly to the top of the base plate through threaded connection or other means. The base plate provides support for the mounting column to ensure its stability. The support column is set radially along the mounting column and is used to fix the test tube.

[0027] For example, see Figure 1 and Figure 3 As shown, the mounting post 12 is provided with several threaded through holes (not shown), and the support post 13 is provided with an external thread connected to the threaded through holes at one end near the mounting post 12.

[0028] In this technical solution, the support column can be directly selected from existing studs and other structures, and can be adjusted and set on the mounting column. The installation position of the support column can be adjusted according to the inner surface of the test tube to ensure full contact with the test tube.

[0029] For example, see Figure 1 and Figure 3 As shown, the end of the support column 13 facing away from the mounting column is connected to an electromagnet (not shown) via a second universal joint.

[0030] In this technical solution, a conventional electromagnet can be used, and the material of the test tube is 17-4PH stainless steel, namely martensitic precipitation hardening stainless steel, which is magnetic. When the electromagnet is energized, it can firmly hold the test tube, and when the electromagnet is de-energized, the test tube can be freely removed / moved.

[0031] For example, see Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the inner and outer sides of the polishing track 2 are respectively provided with an inner arc groove and an outer arc groove. A rack 7 is provided in the outer arc groove. The bottom surface of the slider 3 is respectively provided with a gear 8 that meshes with the rack 7 and a roller 9 that rolls in the inner arc groove.

[0032] In this technical solution, the polishing track is fixed to a conventional worktable by bolts, etc. The worktable has a notch aligned with the inner wall of the polishing track. Bolts pass through the bottom of the worktable and connect to the bottom of the polishing track, thus fixing the polishing track. The test piece placed on the test piece placement frame is within the notch area, and its surface curvature corresponds to the polishing track. The test piece placement frame or worktable can be set on an existing lifting platform, meaning the test piece and polishing head can move relative to each other along the axial direction of the mounting column, or the test piece can be manually adjusted to fix its axial position on the mounting column. Conventional stop pins or dampers are provided at both ends of the polishing track to prevent the slider from falling off the polishing track. The rack is composed of multiple arc-shaped small racks spliced ​​together and fixed in the outer arc groove by conventional bolts, etc. The gear includes a wheel frame with an I-beam structure and several The rollers, rotatably mounted on the wheel frame, allow the gears to automatically adjust their force, improving transmission accuracy and reducing noise during transmission. The two ends of the I-beam wheel are equipped with end plates encapsulating the rollers. The wavy tooth surface of the rack matches the movement trajectory of the gear and rollers, enabling precise transmission with zero backlash and ultra-low error. This eliminates the backlash between the gear and rack. The end plates are made of self-lubricating nylon and slide against the inner wall of the outer arc groove, improving the fit between the slider and the polishing track and preventing polishing head jump caused by gaps. The rollers use conventional roller bearings and are connected to the slider via threaded connections. The rollers are actively engaged in the inner arc groove. To improve the fit between the rollers and the inner arc groove, the rollers are equipped with V-grooves, and a boss is provided within the inner arc groove to engage with the V-grooves.

[0033] For example, see Figure 4 As shown, the top surface of the slider 3 is provided with a servo motor 81 that is connected to the gear 8.

[0034] In this technical solution, the servo motor is fixed to the slider by bolts and passes through the slider. Its output shaft is connected to the gear by conventional tensioning sleeves. By rotating the servo motor forward and backward, the gear is driven to rotate forward and backward, which in turn drives the polishing head to move back and forth along the rack, thereby achieving automatic polishing.

[0035] For example, see Figure 4 As shown, a connecting sleeve 31 is provided on the side of the slider 3 near the polishing head 4, and a threaded blind hole corresponding to the screw 5 is provided at the end of the connecting sleeve 31 near the polishing head 4.

[0036] In this technical solution, the connecting sleeve is fixed to the side of the slider by means of threaded connection, etc. The screw is a double-headed bolt structure, with one end connected to the threaded blind hole and the other end connected to the first universal joint, which is used to adjust the installation position of the polishing head. A self-locking nut is provided on the screw to prevent the screw from shifting due to vibration, etc.

[0037] In summary, this test tube polishing device has a simple structure and is used for automated polishing of test tubes, improving polishing uniformity and reducing workload.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0039] The above description is only a specific embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A test tube polishing apparatus, characterized in that, It includes a test tube placement frame, a polishing track, and a polishing head that slides on the polishing track via a slider. The polishing track has an arc-shaped structure and is arranged corresponding to the test tubes placed on the test tube placement frame. A screw is connected to the side of the slider near the polishing head, and the polishing head is connected to the corresponding end of the screw via a first universal joint.

2. The test tube polishing apparatus according to claim 1, characterized in that: The test tube placement frame includes a base plate, mounting columns perpendicular to the top of the base plate, and several support columns staggered on the mounting columns.

3. The test tube polishing apparatus according to claim 2, characterized in that: The mounting post has several threaded through holes, and the support post has an external thread connected to the threaded through holes at one end near the mounting post.

4. The test tube polishing apparatus according to claim 2, characterized in that: The end of the support column opposite to the mounting column is connected to an electromagnet via a second universal joint.

5. The test tube polishing apparatus according to claim 1, characterized in that: The inner and outer sides of the polishing track are respectively provided with an inner arc groove and an outer arc groove. A rack is provided in the outer arc groove. The bottom surface of the slider is respectively provided with a gear that meshes with the rack and a roller that rolls in the inner arc groove.

6. The test tube polishing apparatus according to claim 5, characterized in that: The top surface of the slider is equipped with a servo motor that drives the gear.

7. The test tube polishing apparatus according to claim 1, characterized in that: A connecting sleeve is provided on the side of the slider near the polishing head, and a threaded blind hole corresponding to the screw is provided at the end of the connecting sleeve near the polishing head.

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