Fixtures for processing spinal orthopedic implants
By designing a clamping fixture for processing spinal orthopedic implants including screw-driven T-bar blocks and limiting structures, the problems of high processing difficulty and low accuracy in the prior art are solved, and the rapid clamping of workpieces is achieved and precise positioning improves processing accuracy and stability, and simplifies the multi-faceted processing process.
Patent Information
- Application Number
- CN201810755259.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2018-07-11
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2038-07-11
AI Technical Summary
During the processing of spinal orthopedic implants, the surface characteristic curve of the part and the shape and position tolerance of the link are small, which makes it difficult to process. It is difficult for existing clamping fixtures to achieve rapid clamping and precise positioning, which affects the processing accuracy and stability. .
A clamping fixture for processing spinal orthopedic implants including a base plate, a movable clamping block and a pressing mechanism is designed. The workpiece is quickly clamped and disassembled by a screw driving the T-bar movement, combining the limiting column and The limit hole ensures positioning accuracy and achieves stable support and fixation of the workpiece through bumps and groove structures.
It realizes rapid clamping and precise positioning of workpieces, avoids deformation and position deviation of workpieces, improves machining accuracy and stability, facilitates multi-faceted machining, saves clamping time and reduces machining deviations.
Smart Images
Figure CN110712049B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a clamping jig for processing spinal orthopedic implants, and relates to the technical field of medical device processing. Background Art
[0002] The spine is also called the vertebral column. It is mainly used to support the upright trunk of the human body. Structurally, it includes seven cervical vertebrae, twelve thoracic vertebrae, five lumbar vertebrae, the sacrum and the coccyx from top to bottom. It has the function of supporting the body and protecting the spinal cord. The intervertebral discs serve as buffers between each section and provide the spine with shock absorption and bending functions.
[0003] Spinal orthopedic devices are implants used for human spine correction and fixation, and are mostly made of titanium alloy. Titanium alloy implants have been used for more than 50 years, with stable performance and good affinity. Screws are used to fix the implants on the spine, and the links between the parts are used to adjust and fix the spine to reconstruct the spine. In order to better fit the spine, many features on the surface of the parts are designed with curved surfaces, and the shape and position tolerances of the links are very small, which makes the processing very difficult. Summary of the invention
[0004] The purpose of the present invention is to provide a clamping jig for processing spinal orthopedic implants. The clamping jig for processing spinal orthopedic implants can realize the rapid clamping of the clamping block, which not only fixes the clamping block, but also facilitates the disassembly and installation of the clamping block. It is convenient to operate and has good stability, thus ensuring the positioning accuracy of the clamping block, that is, ensuring the clamping and processing accuracy of the workpiece.
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a clamping jig for processing spinal orthopedic implants, comprising a base plate, a clamping block movably mounted on the base plate, and a clamping mechanism arranged on both sides of the clamping block, wherein the pressure heads of the clamping mechanism are respectively pressed and connected with the upper surface of the clamping block, at least one limiting column is arranged on the upper surface of the base plate, and a limiting hole for the limiting column to be embedded is opened on the lower surface of the clamping block;
[0006] The front surface of the clamping block has a convex block, the rear surface of the clamping block has a groove, the front surface of the convex block has two T-shaped through holes and two square through holes that penetrate the groove, the two T-shaped through holes are arranged opposite to each other, the two square through holes are arranged opposite to each other, and the T-shaped through holes and the square through holes are arranged at equal intervals and staggered along the circumferential direction;
[0007] The two strip blocks are respectively embedded in the two square through holes and fixedly connected with the clamping block through a fixing pin, the top surfaces of the two strip blocks respectively extend out of the front surface of the protrusion, and a T-shaped strip block is respectively passed through the two T-shaped through holes, one end of the T-shaped strip block extends out of the front surface of the protrusion, and the other end is fixedly connected with a movable block, the movable block is embedded in the groove on the rear surface of the clamping block, a screw rod is movably installed on the movable block, the front end of the screw rod is in contact with the surface of the groove of the clamping block, and one end of the T-shaped strip block extending out of the front surface of the protrusion has a protrusion facing the other T-shaped strip block;
[0008] The clamping mechanism further includes a base fixed on the upper surface of the bottom plate, a fixing frame installed on the upper surface of the base, a first rotating rod, a second rotating rod and a pressure rod, one end of the first rotating rod is movably connected to the fixing frame, one end of the second rotating rod is movably connected to the fixing frame, the other ends of the first rotating rod and the second rotating rod are rotatably connected to the pressure rod respectively, and a pressure head bracket is connected to the second rotating rod, and a pressure head is installed on the pressure head bracket at one end opposite to the second rotating rod.
[0009] The further improved scheme in the above technical scheme is as follows:
[0010] 1. In the above scheme, the two square through holes are arranged opposite to each other vertically, and the two T-shaped through holes are arranged opposite to each other horizontally.
[0011] 2. In the above solution, the number of the at least one limiting column is 2.
[0012] 3. In the above solution, the top surface of the limit column is hemispherical.
[0013] 4. In the above solution, at least one side surface adjacent to the lower surface of the clamping block is provided with a limiting hole for the limiting column to be embedded.
[0014] 5. In the above solution, a limiting hole for the limiting column to be embedded is opened on the upper surface opposite to the lower surface of the clamping block.
[0015] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:
[0016] 1. The clamping jig for processing spinal orthopedic implants of the present invention drives the T-shaped bar block to move forward and backward by the forward and backward movement of the screw rod, which facilitates the clamping and disassembly of the workpiece. At the same time, the workpiece is pressed and fixed by the protruding part to avoid the deformation of the workpiece caused by clamping the workpiece; in addition, the bar block is set to play a certain role in limiting and supporting the workpiece, ensuring the stability of the workpiece during processing and avoiding the position deviation or shaking of the workpiece; secondly, the clamping mechanism further includes a base fixed on the upper surface of the bottom plate, a fixing frame installed on the upper surface of the base, a first rotating rod, and a second rotating rod and a pressure rod, one end of the first rotating rod is movably connected to the fixed frame, one end of the second rotating rod is movably connected to the fixed frame, the other end of the first rotating rod and the second rotating rod are rotatably connected to the pressure rod respectively, a pressure head bracket is connected to the second rotating rod, and a pressure head is installed on the pressure head bracket opposite to one end of the second rotating rod. The setting of the clamping mechanism realizes the rapid clamping of the clamping block, which not only fixes the clamping block, but also facilitates the disassembly and installation of the clamping block. It is convenient to operate and has good stability, which ensures the positioning accuracy of the clamping block, that is, ensures the clamping and processing accuracy of the workpiece.
[0017] 2. The clamping jig for processing spinal orthopedic implants of the present invention has at least one limiting column arranged on the upper surface of the bottom plate, and a limiting hole for the limiting column to be embedded in the lower surface of the clamping block is provided. The setting of the limiting hole and the limiting column can quickly and accurately position the clamping block on the bottom plate to ensure the processing accuracy; at the same time, during the processing, the clamping block is limited to prevent the occurrence of deviation and jitter during the processing, thereby ensuring the processing accuracy of the workpiece; secondly, the top surface of the limiting column is hemispherical, and the setting of the hemispherical top surface of the limiting column has a guiding function, which is convenient for quickly loading the clamping block into a fixed position; thirdly, at least one side surface adjacent to the lower surface of the clamping block is provided with a limiting hole for the limiting column to be embedded, so that the clamping block can be rotated 90 degrees, that is, the workpiece clamped on the clamping block is rotated 90 degrees for processing, and multiple sides of the workpiece can be processed by rotating the clamping block without clamping the workpiece multiple times, which is convenient and quick to operate, saves the time of clamping the workpiece, and effectively avoids the deviation caused by repeated clamping of the workpiece, thereby ensuring the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Attached Figure 1 This is a schematic diagram of the structure of a clamping fixture for processing spinal orthopedic implants of the present invention;
[0019] Attached Figure 2 It is a schematic diagram of the structural decomposition of the clamping mechanism in the clamping fixture of the present invention;
[0020] Attached Figure 3 It is a schematic diagram of the partial structure of the clamping jig for processing spinal orthopedic implants of the present invention;
[0021] Attached Figure 4 It is a schematic diagram of the partial structure of the clamping jig for processing spinal orthopedic implants of the present invention;
[0022] Attached Figure 5 It is a schematic diagram of the structure of the clamping block in the clamping fixture for processing spinal orthopedic implants of the present invention.
[0023] In the above drawings: 1, bottom plate; 2, clamping block; 3, clamping mechanism; 301, pressure head; 302, base; 303, fixing frame; 304, first rotating rod; 305, second rotating rod; 306, pressure rod; 307, pressure head bracket; 4, limiting column; 5, limiting hole; 6, protrusion; 7, groove; 8, T-shaped through hole; 9, square through hole; 10, strip block; 11, fixing pin; 12, T-shaped strip block; 13, movable block; 14, screw; 15, protrusion. DETAILED DESCRIPTION
[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:
[0025] Embodiment 1: A clamping jig for processing spinal orthopedic implants, comprising a base plate 1, a clamping block 2 movably mounted on the base plate 1, and a clamping mechanism 3 arranged on both sides of the clamping block 2, wherein the pressing heads 301 of the clamping mechanism 3 are respectively pressed and connected with the upper surface of the clamping block 2, at least one limiting column 4 is arranged on the upper surface of the base plate 1, and a limiting hole 5 for the limiting column 4 to be embedded is opened on the lower surface of the clamping block 2;
[0026] The front surface of the clamping block 2 has a protrusion 6, the rear surface of the clamping block 2 has a groove 7, the front surface of the protrusion 6 has two T-shaped through holes 8 and two square through holes 9 that penetrate the groove 7, the two T-shaped through holes 8 are arranged opposite to each other, the two square through holes 9 are arranged opposite to each other, and the T-shaped through holes 8 and the square through holes 9 are arranged alternately and evenly spaced along the circumferential direction;
[0027] Two strip blocks 10 are respectively embedded in two square through holes 9 and fixedly connected to the clamping block 2 through a fixing pin 11. The top surfaces of the two strip blocks 10 extend out of the front surface of the protrusion 6 respectively. A T-shaped strip block 12 is respectively passed through the two T-shaped through holes 8. One end of the T-shaped strip block 12 extends out of the front surface of the protrusion 6, and the other end is fixedly connected to a movable block 13. The movable block 13 is embedded in the groove 7 on the rear surface of the clamping block 2. A screw rod 14 is movably installed on the movable block 13. The front end of the screw rod 14 is in contact with the surface of the groove 7 of the clamping block 2. The end of the T-shaped strip block 12 extending out of the front surface of the protrusion 6 has a protrusion 15 facing the other T-shaped strip block 12;
[0028] The clamping mechanism 3 further includes a base 302 fixed to the upper surface of the bottom plate 1, a fixed frame 303 installed on the upper surface of the base 302, a first rotating rod 304, a second rotating rod 305 and a pressing rod 306, one end of the first rotating rod 304 is movably connected to the fixed frame 303, one end of the second rotating rod 305 is movably connected to the fixed frame 303, the other ends of the first rotating rod 304 and the second rotating rod 305 are rotatably connected to the pressing rod 306 respectively, and a pressing head bracket 307 is connected to the second rotating rod 305, and a pressing head 301 is installed on the pressing head bracket 307 opposite to one end of the second rotating rod 305.
[0029] The two square through holes 9 are disposed opposite to each other vertically, and the two T-shaped through holes 8 are disposed opposite to each other horizontally; the number of the at least one limiting column 4 is two; and the top surface of the limiting column 4 is hemispherical.
[0030] Embodiment 2: A clamping jig for processing spinal orthopedic implants, comprising a base plate 1, a clamping block 2 movably mounted on the base plate 1, and a clamping mechanism 3 arranged on both sides of the clamping block 2, wherein the pressing heads 301 of the clamping mechanism 3 are respectively pressed and connected with the upper surface of the clamping block 2, at least one limiting column 4 is arranged on the upper surface of the base plate 1, and a limiting hole 5 for the limiting column 4 to be embedded is opened on the lower surface of the clamping block 2;
[0031] The front surface of the clamping block 2 has a protrusion 6, the rear surface of the clamping block 2 has a groove 7, the front surface of the protrusion 6 has two T-shaped through holes 8 and two square through holes 9 that penetrate the groove 7, the two T-shaped through holes 8 are arranged opposite to each other, the two square through holes 9 are arranged opposite to each other, and the T-shaped through holes 8 and the square through holes 9 are arranged alternately and evenly spaced along the circumferential direction;
[0032] Two strip blocks 10 are respectively embedded in two square through holes 9 and fixedly connected to the clamping block 2 through a fixing pin 11. The top surfaces of the two strip blocks 10 extend out of the front surface of the protrusion 6 respectively. A T-shaped strip block 12 is respectively passed through the two T-shaped through holes 8. One end of the T-shaped strip block 12 extends out of the front surface of the protrusion 6, and the other end is fixedly connected to a movable block 13. The movable block 13 is embedded in the groove 7 on the rear surface of the clamping block 2. A screw rod 14 is movably installed on the movable block 13. The front end of the screw rod 14 is in contact with the surface of the groove 7 of the clamping block 2. The end of the T-shaped strip block 12 extending out of the front surface of the protrusion 6 has a protrusion 15 facing the other T-shaped strip block 12;
[0033] The clamping mechanism 3 further includes a base 302 fixed to the upper surface of the bottom plate 1, a fixed frame 303 installed on the upper surface of the base 302, a first rotating rod 304, a second rotating rod 305 and a pressing rod 306, one end of the first rotating rod 304 is movably connected to the fixed frame 303, one end of the second rotating rod 305 is movably connected to the fixed frame 303, the other ends of the first rotating rod 304 and the second rotating rod 305 are rotatably connected to the pressing rod 306 respectively, and a pressing head bracket 307 is connected to the second rotating rod 305, and a pressing head 301 is installed on the pressing head bracket 307 opposite to one end of the second rotating rod 305.
[0034] At least one side surface adjacent to the lower surface of the clamping block 2 is provided with a limiting hole 5 for the limiting column 4 to be embedded; the upper surface opposite to the lower surface of the clamping block 2 is provided with a limiting hole 5 for the limiting column 4 to be embedded.
[0035] When in use, when the screw is loosened backward, the movable block can move forward, that is, the distance between the T-shaped bar block and the clamping block becomes larger. At this time, the workpiece to be processed is loaded. After the workpiece is loaded, the screw is tightened forward. The front end face of the screw is in close contact with the groove surface of the clamping block. The clamping block reacts on the screw to tighten the movable block backward, that is, tighten the T-shaped bar block fixedly connected to the movable block. The raised part of the T-shaped bar block presses the workpiece to achieve clamping and fixation of the workpiece.
[0036] When using a clamping fixture for processing spinal orthopedic implants, the forward and backward movement of the screw can drive the T-shaped bar block to move forward and backward, which is convenient for clamping and disassembling the workpiece. At the same time, the workpiece is pressed and fixed by the raised portion to avoid deformation of the workpiece caused by clamping. In addition, the setting of the bar block can limit and support the workpiece to a certain extent, ensure the stability of the workpiece during processing, and avoid the occurrence of workpiece position displacement or jitter. Secondly, the setting of the clamping mechanism realizes the rapid clamping of the clamping block, which not only fixes the clamping block, but also facilitates the disassembly and installation of the clamping block. It is convenient to operate and has good stability, which ensures the positioning accuracy of the clamping block, that is, ensures the clamping and processing accuracy of the workpiece. degree; thirdly, the setting of the limit hole and the limit column can quickly and accurately position the clamping block on the base plate to ensure the processing accuracy; at the same time, during the processing, it plays a limiting role on the clamping block to prevent deviation and jitter during the processing, thereby ensuring the processing accuracy of the workpiece; thirdly, the setting of the hemispherical top surface of the limit column has a guiding role, which is convenient for quickly installing the clamping block into a fixed position; thirdly, the clamping block can be rotated 90 degrees, that is, the workpiece clamped on the clamping block can be rotated 90 degrees for processing. It only needs to rotate the clamping block without clamping the workpiece multiple times to process multiple sides of the workpiece. The operation is convenient and quick, saves the time of clamping the workpiece, and effectively avoids the deviation caused by repeated clamping of the workpiece, thereby ensuring the processing accuracy.
[0037] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.
Claims
1. A clamping fixture for processing spinal orthopedic implants, characterized in that: It comprises a base plate (1), a clamping block (2) movably mounted on the base plate (1), and a clamping mechanism (3) arranged on both sides of the clamping block (2), wherein the pressing heads (301) of the clamping mechanism (3) are respectively connected to the upper surface of the clamping block (2) by pressing, the upper surface of the base plate (1) is provided with at least one limiting column (4), and the lower surface of the clamping block (2) is provided with a limiting hole (5) for the limiting column (4) to be embedded; The front surface of the clamping block (2) has a protrusion (6), the rear surface of the clamping block (2) has a groove (7), the front surface of the protrusion (6) has two T-shaped through holes (8) and two square through holes (9) that penetrate the groove (7), the two T-shaped through holes (8) are arranged opposite to each other, the two square through holes (9) are arranged opposite to each other, and the T-shaped through holes (8) and the square through holes (9) are arranged alternately and equidistantly in the circumferential direction; Two strip blocks (10) are respectively embedded in two square through holes (9) and fixedly connected to the clamping block (2) through a fixing pin (11), the top surfaces of the two strip blocks (10) respectively extend out of the front surface of the protrusion (6), and a T-shaped strip block (12) is respectively passed through the two T-shaped through holes (8), one end of the T-shaped strip block (12) extends out of the front surface of the protrusion (6), and the other end is fixedly connected to a movable block (13), the movable block (13) is embedded in the groove (7) on the rear surface of the clamping block (2), and a screw rod (14) is movably installed on the movable block (13), the front end of the screw rod (14) is in contact with the surface of the groove (7) of the clamping block (2), and one end of the T-shaped strip block (12) extending out of the front surface of the protrusion (6) has a protrusion (15) facing the other T-shaped strip block (12); The clamping mechanism (3) further comprises a base (302) fixed to the upper surface of the bottom plate (1), a fixing frame (303) mounted on the upper surface of the base (302), a first rotating rod (304), a second rotating rod (305) and a pressing rod (306), one end of the first rotating rod (304) being movably connected to the fixing frame (303), one end of the second rotating rod (305) being movably connected to the fixing frame (303), the other ends of the first rotating rod (304) and the second rotating rod (305) being rotatably connected to the pressing rod (306), and a pressing head bracket (307) being connected to the second rotating rod (305), and a pressing head (301) being mounted on the pressing head bracket (307) at one end opposite to the second rotating rod (305).
2. The clamping jig for processing spinal orthopedic implants according to claim 1, characterized in that: The two square through holes (9) are arranged opposite to each other vertically, and the two T-shaped through holes (8) are arranged opposite to each other horizontally.
3. The clamping jig for processing spinal orthopedic implants according to claim 1, characterized in that: The number of the at least one limiting column (4) is 2.
4. The clamping jig for processing spinal orthopedic implants according to claim 1, characterized in that: The top surface of the limiting column (4) is hemispherical.
5. The clamping jig for processing spinal orthopedic implants according to claim 1, characterized in that: At least one side surface adjacent to the lower surface of the clamping block (2) is provided with a limiting hole (5) for the limiting column (4) to be embedded.
6. The clamping jig for processing spinal orthopedic implants according to claim 1, characterized in that: A limiting hole (5) for the limiting column (4) to be embedded is provided on the upper surface opposite to the lower surface of the clamping block (2).