A kind of auxiliary fixture for medical handle processing
By employing a dual-positioning groove-limiting block collaborative structure and buffer protection, the problem of difficult positioning of medical handpieces in laser marking processing is solved, achieving fast and accurate workpiece positioning and efficient processing results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU ZERO POINT PRECISION MOULD CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-06-12
AI Technical Summary
Medical handpieces are difficult to position in laser marking processes. Traditional clamps are difficult to hold stably, resulting in low efficiency, insufficient precision, and easy damage to the surface.
The system employs a dual positioning groove-limiting block collaborative structure, combined with an electric push rod and a guiding mechanism, to achieve precise radial and axial positioning of the workpiece. Buffer pads protect the workpiece surface and prevent mechanical impact.
It enables rapid and reliable workpiece positioning, improves machining accuracy and yield, avoids surface damage, and enhances machining efficiency.
Smart Images
Figure CN224347124U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device processing tooling technology, and more specifically, to an auxiliary clamp for processing medical handles. Background Technology
[0002] Medical handpiece parts often have complex curved surfaces and irregular shapes, which pose positioning difficulties in laser marking: traditional vises or three-jaw chucks are difficult to hold irregularly shaped workpieces stably, requiring repeated position adjustments; low efficiency: each clamping requires manual leveling of the reference surface, with a single clamping time of 1 to 2 minutes; insufficient accuracy: manual positioning can easily lead to offset of the marking position; risk of damage: hard fixtures in direct contact with precision surfaces can easily cause indentations or scratches. Although there are machining fixtures in the existing technology, they lack integrated leveling and positioning structures and axial limit designs, still relying on manual calibration, which remains inefficient. Utility Model Content
[0003] To address the aforementioned problems in the existing technology, the purpose of this utility model is to provide an auxiliary clamp for processing medical handles, comprising: a clamp base, a fixed clamping seat, a movable clamping seat, a driving device, a guiding mechanism, and a limiting block disposed on the fixed clamping seat; the fixed clamping seat is fixedly installed at one end of the clamp base; the movable clamping seat is slidably installed on the clamp base via the guiding mechanism and is disposed opposite to the fixed clamping seat; the driving device is installed on the clamp base, and its output end is connected to the movable clamping seat; a first leveling and positioning groove matching the outer contour of the portion of the medical handle to be processed is formed on the side of the fixed clamping seat facing the movable clamping seat; a second leveling and positioning groove matching the outer contour of the other portion of the medical handle to be processed is formed on the side of the movable clamping seat facing the fixed clamping seat.
[0004] As a preferred embodiment, the limiting block is fixedly disposed at the end of the fixed clamping seat, and its limiting surface is perpendicular to the axial direction of the medical handle. A replaceable buffer pad is provided on the limiting surface of the limiting block, and the buffer pad is in contact with the end face of the medical handle.
[0005] As a preferred embodiment, the guiding mechanism includes at least two linear guide rails arranged parallel to each other on the fixture base, and a slider adapted to the linear guide rails is fixedly installed at the bottom of the movable clamping seat.
[0006] As a preferred embodiment, the contours of the first and second leveling and positioning grooves match the shape of the non-clamping surface on the medical handle used for laser typing, and the groove edges are provided with guide chamfers.
[0007] As a preferred embodiment, an elastic auxiliary positioning block is provided on the bottom or side wall of the first leveling positioning groove of the fixed clamping seat, and the elastic auxiliary positioning block protrudes from the surface of the first leveling positioning groove.
[0008] As a preferred embodiment, the driving device is an electric push rod, the cylinder of which is fixed on the fixture base, and the end of the push rod is connected to the movable clamping seat through a floating joint.
[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0010] This utility model utilizes a dual positioning groove-limiting block collaborative structure and a split design to achieve precise radial and axial positioning of the workpiece in one integrated manner. This ensures smooth and reliable clamping action and improves positioning accuracy. At the same time, a triple buffer protection mechanism is applied to the workpiece positioning contact surface to transform mechanical impact into elastic buffering, preventing damage to the workpiece surface. Furthermore, the combination of rapid clamping and high repeatability positioning accuracy effectively improves the yield rate of processed products. Attached Figure Description
[0011] Figure 1 This is a top view of the structure of this utility model;
[0012] Figure 2 This is a schematic diagram of the guiding mechanism of this utility model. Detailed Implementation
[0013] The present invention will be further described below with reference to specific embodiments.
[0014] An auxiliary fixture for processing medical handles includes: a fixture base 1, a fixed clamping seat 2, a movable clamping seat 3, a driving device 4, a guiding mechanism 5, and a limiting block 7 disposed on the fixed clamping seat 2; the fixed clamping seat 2 is fixedly installed at one end of the fixture base 1; the movable clamping seat 3 is slidably installed on the fixture base 1 through the guiding mechanism 5 and is disposed opposite to the fixed clamping seat 2; the driving device 4 is installed on the fixture base 1, and its output end is connected to the movable clamping seat 3; the fixed clamping seat 2 has a first leveling and positioning groove 21 on its side facing the movable clamping seat 3 that matches the outer contour of the part of the medical handle to be processed; the movable clamping seat 3 has a second leveling and positioning groove 31 on its side facing the fixed clamping seat 2 that matches the outer contour of the other part of the medical handle to be processed.
[0015] When processing the medical handle, the clamp base 1 can be fixed to the laser operating table with bolts. Then, one side of the medical handle is pressed against the first leveling and positioning groove 21 on the fixed clamping seat 2. At this time, the end of the medical handle is pressed against the limiting block 7, thus completing the leveling and positioning of the medical handle. Then, the driving device 4 and the guiding mechanism 5 drive the movable clamping seat 3 to move towards the medical handle until the second leveling and positioning groove 31 on the movable clamping seat 3 is pressed against the other side of the medical handle, thus completing the positioning and fixing of the medical handle. Laser processing can then be performed. In the whole process, radial automatic positioning is achieved through the double positioning groove and axial positioning is achieved through the limiting block, which greatly shortens the clamping time.
[0016] As a preferred embodiment, the limiting block 7 is fixedly disposed at the end of the fixed clamping seat 2, and its limiting surface is perpendicular to the axial direction of the medical handle. A replaceable buffer pad 72 is provided on the limiting surface of the limiting block 7, and the buffer pad 72 is in contact with the end face of the medical handle.
[0017] The buffer pad 72 can be a polyurethane pad, which can prevent direct metal collisions from damaging the medical handpiece. The replaceable setting allows the buffer pad 72 to be replaced individually after it wears out. At the same time, buffer pads 72 of different thicknesses can be replaced to adapt to medical handpieces of different lengths.
[0018] As a preferred embodiment, the guiding mechanism 5 includes at least two linear guide rails 51 arranged parallel to each other on the clamp base 1, and the bottom of the movable clamping seat 3 is fixedly installed with a slider 52 adapted to the linear guide rails 51, which can effectively prevent the movable clamping seat 3 from shifting during movement and play a guiding role.
[0019] As a preferred embodiment, the contours of the first leveling and positioning groove 21 and the second leveling and positioning groove 31 match the shape of the non-clamping surface on the medical handle used for laser typing, and the groove edges are provided with guide chamfers to guide the medical handle to slide into the positioning groove.
[0020] As a preferred embodiment, an elastic auxiliary positioning block 22 is provided on the bottom or side wall of the first leveling and positioning groove 21 of the fixed clamping seat 2. The elastic auxiliary positioning block 22 protrudes from the surface of the first leveling and positioning groove 21. When the medical handle is inserted, the elastic auxiliary positioning hole is compressed and guides the medical handle into place. At this time, the elastic force can maintain the soft contact between the medical handle and the bottom of the groove, while eliminating the gap between the workpiece and the groove wall.
[0021] As a preferred embodiment, the drive device 4 is an electric push rod, the cylinder of which is fixed to the clamp base 1, and the end of the push rod is connected to the movable clamping seat 3 through a floating joint. When the movable clamping seat 3 needs to move, the forward and backward movement of the movable clamping seat 3 is controlled by extending or retracting the electric push rod.
[0022] The complete operation process for this solution is as follows:
[0023] 1. Preparation stage:
[0024] Fix the fixture to the laser machine worktable;
[0025] Connect the power supply to the electric push rod and test the reciprocating motion of the movable clamping seat 3.
[0026] Check if the thickness of the buffer pad 72 matches the handle length of the current batch.
[0027] 2. Clamping operation:
[0028] The actuator push rod retracts the movable seat 3 to the open position.
[0029] The medical handpiece is tilted 30° and placed into the fixed clamping seat 2 area: the curved surface of the middle part of the handpiece slides into the first leveling and positioning groove 21 along the guide chamfer; the end face of the handpiece contacts the buffer pad 72 of the limiting block 7; the elastic auxiliary positioning block 22 resets after being pressed, eliminating the assembly gap;
[0030] The starter push rod pushes the movable seat 3 forward; the left curved surface of the handle is embedded in the second leveling and positioning groove 31; the second leveling and positioning groove 31 contacts the handle clamping surface to apply clamping force.
[0031] 3. Processing stage:
[0032] The laser head automatically identifies the typing area on the handle;
[0033] Execute the preset laser marking program.
[0034] 4. Unloading operation:
[0035] The push rod causes the movable seat 3 to retract to the open position;
[0036] Simply lift the handle upwards;
[0037] Blow away any remaining metal shavings from the clamps in preparation for the next clamping operation.
[0038] The contents not described in detail in this specification are existing technologies known to those skilled in the art, and their specifications and models can be selected according to actual conditions.
[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical embodiments described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. An auxiliary clamp for processing medical handles, characterized in that, include: The fixture includes a base (1), a fixed clamping seat (2), a movable clamping seat (3), a drive device (4), a guide mechanism (5), and a limiting block (7) disposed on the fixed clamping seat (2). The fixed clamping seat (2) is fixedly installed on one end of the fixture base (1). The movable clamping seat (3) is slidably installed on the fixture base (1) through the guide mechanism (5) and is disposed opposite to the fixed clamping seat (2). The drive device (4) is installed on the fixture base (1), and its output end is connected to the movable clamping seat (3). The fixed clamping seat (2) has a first leveling and positioning groove (21) on its side facing the movable clamping seat (3) that matches the outer contour of the medical handle to be processed. The movable clamping seat (3) has a second leveling and positioning groove (31) on its side facing the fixed clamping seat (2) that matches the outer contour of the other part of the medical handle to be processed.
2. The auxiliary clamp for processing medical handles according to claim 1, characterized in that, The limiting block (7) is fixedly disposed at the end of the fixed clamping seat (2), and its limiting surface is perpendicular to the axial direction of the medical handle. A replaceable buffer pad (72) is provided on the limiting surface of the limiting block (7), and the buffer pad (72) is in contact with the end face of the medical handle.
3. The auxiliary clamp for processing medical handles according to claim 1, characterized in that, The guiding mechanism (5) includes at least two linear guide rails (51) arranged in parallel on the clamp base (1), and the bottom of the movable clamping seat (3) is fixedly installed with a slider (52) adapted to the linear guide rails (51).
4. The auxiliary clamp for processing medical handles according to claim 1, characterized in that, The contours of the first leveling and positioning groove (21) and the second leveling and positioning groove (31) match the shape of the non-clamping surface on the medical handle for the laser typing area, and the groove edges are provided with guide chamfers.
5. An auxiliary clamp for processing medical handles according to claim 1, characterized in that, An elastic auxiliary positioning block (22) is provided on the bottom or side wall of the first leveling positioning groove (21) of the fixed clamping seat (2), and the elastic auxiliary positioning block (22) protrudes from the surface of the first leveling positioning groove (21).
6. The auxiliary clamp for processing medical handles according to claim 1, characterized in that, The drive device (4) is an electric push rod, whose cylinder is fixed on the clamp base (1), and the end of the push rod is connected to the movable clamping seat (3) through a floating joint.