Puncture needle tip curve grinding machine

Abstract

This invention relates to the field of grinding equipment technology, specifically a puncture needle tip curve grinding machine, comprising a machine body, a grinding wheel spindle mounted on one side of the top of the machine body, and an X-axis adjusting seat on the other side of the top of the machine body. A first push rod cylinder is mounted at one end of the X-axis adjusting seat, and a B-axis adjusting seat is mounted on the X-axis adjusting seat. Through the cooperation of the grinding wheel spindle and the conical positioning clamping mechanism, during the processing of the needle tip, the clamping and releasing of the needle tube by the action of the third push rod cylinder swing arm can be quickly achieved. During the clamping process, the needle tube does not move axially. The five clamping blocks move synchronously. Through the spindle grinding wheel tool setting, the needle tube bevel angle (i.e., the needle tip angle) is first processed, followed by the chamfering and sharpening of the curved trajectory at the needle tip, thereby ensuring a high-precision needle tip shape. Equipped with a precision control system and positioning device, it can accurately control the processing path and processing force of each puncture needle, ensuring the required tolerance accuracy and ensuring that the product meets design requirements.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment technology, specifically to a puncture needle tip profile grinding machine. Background Technology

[0002] A puncture needle tip curve grinding machine is a mechanical device specifically designed for processing puncture needle tips. It typically uses grinding to process the needle tip to achieve the desired shape and precision. The working principle of the puncture needle tip curve grinding machine is as follows: a special grinding device places the puncture needle, which is fixed on the worktable, in a suitable position, and then the grinding head or grinding wheel grinds the needle tip along a curved path. This curved path can be adjusted and controlled according to specific needs to achieve the required needle tip shape and precision.

[0003] Currently, the puncture needles used in clinical practice, especially those with chamfered and sharpened tips, are all hand-ground. The shape of the needle tip resembles an elliptical trajectory formed in space, which is complex and requires extremely high precision. It requires multiple grinding and corrections by hand under the assistance of a microscope to complete, resulting in a high reject rate, extremely high production costs, and higher skill requirements for personnel, making it inconvenient for daily use. Summary of the Invention

[0004] The purpose of this invention is to provide a puncture needle tip profile grinding machine to solve the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: a puncture needle tip profile grinding machine, comprising a machine body, a grinding wheel spindle mounted on one side of the top of the machine body, an X-axis adjusting seat mounted on the other side of the top of the machine body, a first push rod cylinder mounted on one end of the X-axis adjusting seat, a B-axis adjusting seat mounted on the X-axis adjusting seat, a second push rod cylinder mounted on one end of the B-axis adjusting seat, a Z-axis adjusting seat mounted on the B-axis adjusting seat, an automatic feeding mechanism mounted on the outside of the machine body, a conical positioning and clamping mechanism mounted beside the grinding wheel spindle, a part-retrieving robot mounted on one side of the top of the grinding wheel spindle, and a finished product storage groove mounted on the other side of the top of the grinding wheel spindle.

[0005] Preferably, the automatic feeding mechanism includes a bracket, an adjusting cylinder, a drive rod, and a circular chrome-plated optical shaft. The adjusting cylinder is installed on one side of the top of the bracket, the drive rod is installed on one side of the adjusting cylinder, and the circular chrome-plated optical shaft is installed at one end of the drive rod.

[0006] Preferably, the bracket is connected to the outside of the machine body by bolts and threads, the bracket is vertically set on one side of the machine body, the adjusting cylinder is located at the top of the bracket, and the drive rod is vertically set on one side of the bracket.

[0007] Preferably, the conical positioning and clamping mechanism includes an A-axis adjusting seat, a chuck, a third push rod cylinder, a pressure pin block, and a cantilever. The pressure pin block is installed at the top of the A-axis adjusting seat, a cantilever is installed at one end of the pressure pin block, a third push rod cylinder is installed at one end of the cantilever, and a chuck is installed at the bottom of the third push rod cylinder.

[0008] Preferably, there are four cantilever arms with the same size and specifications, and five pressure needle blocks with the same size and specifications. The pressure needle blocks are located at the front end of the cantilever arms, and the pressure needle blocks and the cantilever arms swing concentrically.

[0009] Preferably, the bottom surface of the pressure pin block is provided with a V-groove, and the V-groove of the pressure pin block is provided with a grinding fluid channel. The pressure pin block is movably connected to the chuck through a third push rod cylinder, and the A-axis adjusting seat is vertically set on one side of the top of the machine body.

[0010] Preferably, the machine body is rectangular, the grinding wheel spindle is vertically set on one side of the top of the machine body, five grinding wheels are set on the grinding wheel spindle, the five grinding wheels are the same size and specifications, the bottom of the X-axis adjustment seat is provided with a first slide rail, and the X-axis adjustment seat is slidably connected to the top of the slide rail.

[0011] Preferably, a second slide rail is provided on the back side of the B-axis adjustment seat, and the B-axis adjustment seat is slidably connected to the X-axis adjustment seat through the second slide rail. A third slide rail is provided at the bottom of the Z-axis adjustment seat, and the Z-axis adjustment seat is slidably connected to the B-axis adjustment seat through the third slide rail. The part-picking robot is vertically set on one side of the top of the grinding wheel spindle. The finished product storage slot and the part-picking robot are located on the same horizontal plane, and the finished product storage slot is vertically set on the other side of the top of the grinding wheel spindle.

[0012] A method for using a puncture needle tip profile grinding machine, the method comprising the following steps:

[0013] The first step is to push out the piercing needle material from the hopper through the automatic feeding mechanism. The automatic feeding mechanism adopts a spring clip staggered stacking structure. The driving rod is pushed by the adjusting cylinder, and five needle materials are pushed out at the same time. The curved V-shaped groove formed by multiple circular chrome-plated optical shafts arranged in pairs at the bottom facilitates the positioning and export of the tube material.

[0014] The second step is to push it to the conical positioning and clamping mechanism. When the push rod cylinder reaches the stop position, the stop sensor sends a signal.

[0015] The third step is that after receiving the signal, the PLC immediately sends instructions to the A-axis, the cantilever and the needle pressing block. Through the movement of the third push rod cylinder swing arm, the needle pressing block can quickly clamp and release the needle tube. During the clamping process, the needle tube does not move axially, and the five needle pressing blocks move synchronously.

[0016] Fourth step: After the needle is clamped, the PLC continues to send motion commands to the A-axis, Z-axis, X-axis and B-axis. The Z-axis moves up and down perpendicular to the needle axis, the B-axis moves horizontally reciprocating parallel to the needle axis, and the A-axis rotates around the needle axis.

[0017] The fifth step is to align the needle material with the spindle grinding wheel. First, machine the needle bevel angle, i.e., the needle tip angle, and then machine the curved trajectory chamfer and sharpening at the needle tip.

[0018] Step 6: After processing, the A-axis moves to the front of the picking robot, and the A-axis chuck is released and the pressure needle block is lifted. After the action is in place, the picking robot lifts up and opens the finger cylinder. When the axis of the finger cylinder is coaxial with the needle tube, the finger cylinder is clamped. Then the A-axis moves backward. When the finished needle is completely pulled out of the A-axis chuck, the picking robot swings downward so that the needle tip is upward and the needle tail is aligned with the finished product storage slot below. After the action is in place, the finger cylinder is opened and the needle is placed into the finished product storage slot.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] In this invention, the X-axis adjusting seat, B-axis adjusting seat, Z-axis adjusting seat, and automatic feeding mechanism work together to automatically complete the needle tip processing. The Z-axis moves vertically perpendicular to the needle tube axis, the B-axis moves horizontally reciprocating parallel to the needle tube axis, and the A-axis rotates around the needle tube axis. The automatic feeding mechanism then unloads the needle tube, thus automatically completing the processing. This reduces worker workload, simplifies operation procedures and requirements, lowers skill requirements, ensures processing accuracy, improves product quality, provides fast and efficient processing, reduces processing time, increases output, and achieves automated processing. It reduces physical labor, lowers labor intensity, and reduces skill requirements, eliminating the need for tedious manual operations and significantly reducing worker workload. The pre-programmed automatic processing reduces skill requirements and operational difficulty.

[0021] In this invention, through the cooperation of an automatic feeding mechanism and a conical positioning and clamping mechanism, five pressure blocks and a grinding wheel spindle can simultaneously process five puncture needle tips during needle tip processing. Furthermore, the needle tip and chamfering of each needle are completed on the same grinding wheel, ensuring processing accuracy and significantly improving production efficiency. Compared to a single-needle tip processing grinder, a multi-needle processing grinder can handle more workpieces simultaneously, thereby reducing production time and increasing production capacity. It also reduces the number of machines and the floor space required, lowering equipment investment costs and improving production efficiency. More products can be processed per unit time, reducing labor and energy consumption, thus lowering production costs. Precise control of the processing path and force of each puncture needle ensures the required processing accuracy, guaranteeing product consistency and quality stability. Through automated processing, multiple puncture needles can be processed simultaneously, reducing production time and increasing production capacity.

[0022] In this invention, the grinding wheel spindle and conical positioning clamping mechanism work together to quickly clamp and release the needle tube via the action of the third push rod cylinder swing arm during needle tip processing. During clamping, the needle tube does not move axially. All five clamping blocks move synchronously. The grinding wheel on the spindle is used for tool setting, first machining the needle tube's bevel angle (needle tip angle), then machining the curved trajectory and chamfering at the needle tip, ensuring a high-precision needle tip shape. Equipped with a precise control system and positioning device, it can accurately control the processing path and force of each puncture needle, ensuring tolerance accuracy and meeting design requirements, thus improving product quality and reliability. Utilizing advanced automation technology and a precise control system, it achieves a fast and accurate processing process, improving production efficiency and ensuring stable processing quality for each needle tip. This reduces scrap rates, minimizes production losses, and lowers production costs. Attached Figure Description

[0023] Figure 1 This is one of the schematic diagrams of the overall structure of the present invention;

[0024] Figure 2 This is the second schematic diagram of the overall structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the conical positioning and clamping mechanism of the present invention;

[0026] Figure 4 This is a schematic diagram of the grinding wheel spindle structure of the present invention;

[0027] Figure 5 This is the third schematic diagram of the overall structure of the present invention.

[0028] In the diagram: 1. Machine body; 2. Grinding wheel spindle; 3. First push rod cylinder; 4. X-axis adjusting seat; 5. Second push rod cylinder; 6. B-axis adjusting seat; 7. Z-axis adjusting seat; 8. Automatic feeding mechanism; 801. Support; 802. Adjusting cylinder; 803. Drive rod; 804. Circular chrome-plated optical shaft; 9. Conical positioning and clamping mechanism; 901. A-axis adjusting seat; 902. Clamping block; 903. Third push rod cylinder; 904. Pressure pin block; 905. Cantilever; 10. Picking robot; 11. Finished product storage slot. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1 to 5 This invention provides a technical solution: a puncture needle tip curve grinding machine, comprising a machine body 1, a grinding wheel spindle 2 mounted on one side of the top of the machine body 1, an X-axis adjusting seat 4 mounted on the other side of the top of the machine body 1, a first push rod cylinder 3 mounted on one end of the X-axis adjusting seat 4, a B-axis adjusting seat 6 mounted on the X-axis adjusting seat 4, a second push rod cylinder 5 mounted on one end of the B-axis adjusting seat 6, a Z-axis adjusting seat 7 mounted on the B-axis adjusting seat 6, an automatic feeding mechanism 8 mounted on the outside of the machine body 1, a conical positioning clamping mechanism 9 mounted beside the grinding wheel spindle 2, a part-picking robot 10 mounted on one side of the top of the grinding wheel spindle 2, and a finished product storage groove 11 mounted on the other side of the top of the grinding wheel spindle 2.

[0031] In this embodiment, as Figures 1 to 5 As shown, the automatic feeding mechanism 8 includes a bracket 801, an adjusting cylinder 802, a drive rod 803, and a circular chrome-plated optical shaft 804. The adjusting cylinder 802 is installed on one side of the top of the bracket 801, the drive rod 803 is installed on one side of the adjusting cylinder 802, and the circular chrome-plated optical shaft 804 is installed at one end of the drive rod 803.

[0032] In this embodiment, as Figures 1 to 5 As shown, the bracket 801 is connected to the outside of the machine body 1 by bolts and threads. The bracket 801 is vertically set on one side of the machine body 1. The adjusting cylinder 802 is located at the top of the bracket 801, and the drive rod 803 is vertically set on one side of the bracket 801.

[0033] In this embodiment, as Figures 1 to 5 As shown, the conical positioning and clamping mechanism 9 includes an A-axis adjusting seat 901, a chuck 902, a third push rod cylinder 903, a pressure pin block 904, and a cantilever 905. The pressure pin block 904 is installed at the top of the A-axis adjusting seat 901, and the cantilever 905 is installed at one end of the pressure pin block 904. The third push rod cylinder 903 is installed at one end of the cantilever 905, and the chuck 902 is installed at the bottom of the third push rod cylinder 903. The rotation of the A-axis adjusting seat 901 is achieved by synchronous transmission between the sprocket on the servo motor shaft and the other five chuck sprockets, with a transmission ratio of 1:1. This also limits the chain fluctuation and the fit clearance to ensure the accuracy of the rotation angle.

[0034] In this embodiment, as Figures 1 to 5 As shown, there are four cantilever 905s, all of which have the same size and specifications. There are five pressure needle blocks 904s, all of which have the same size and specifications. Five puncture needle tips can be processed simultaneously. The needle tip and chamfering of each needle are completed on the same grinding wheel to ensure processing accuracy. The pressure needle block 904 is located at the front end of the cantilever 905, and the pressure needle block 904 and the cantilever 905 swing concentrically.

[0035] In this embodiment, as Figures 1 to 5As shown, the bottom surface of the pressure pin block 904 has a V-shaped groove, which allows the needle tip area to rotate well within the groove, ensuring the circumferential runout at the needle tip and avoiding straightness errors of the needle tube. The V-shaped groove of the pressure pin block 904 contains a grinding fluid channel, which, in addition to cooling the workpiece and cleaning the grinding products, more importantly, creates a water film between the grinding wheel surface and the pressure pin block 904. Since the rotating grinding wheel, from a microscopic perspective, is not a regular circle but more like a cam, the gap between them decreases when the highest point of the grinding wheel moves directly below the pressure pin block 904. This will generate pressure on the water film between them, and the pressure of the water film will be transmitted to the pressure pin block 904. After the pressure pin block 904 is subjected to force, it will be transmitted to the third push rod cylinder 903 through the hinge point. Finally, through the air pressure buffer in the cylinder, when the high point of the rotating grinding wheel has passed, the air pressure in the cylinder will compensate in the opposite direction. This process can effectively avoid the impact force generated by the high point cutting phenomenon of the grinding wheel on the needle tip processing area, making the processing process more stable. The pressure pin block 904 is movably connected to the chuck 902 through the third push rod cylinder 903. The A-axis adjusting seat 901 is vertically set on one side of the top of the machine body 1.

[0036] In this embodiment, as Figures 1 to 5 As shown, the machine body 1 is rectangular in shape, and the spindle box is an integral structure with the machine body 1. The material and size of the machine body 1 are controlled to ensure the vibration frequency of the machine body 1 so that the grinding wheel and the workpiece resonate at the same frequency. The machine body 1 is equipped with a control system. The entire process from feeding the material into the hopper to placing the finished product into the storage tank is completed by an electrical control system composed of PLC, frequency converter, servo system and various sensors. The grinding wheel spindle 2 is vertically set on one side of the top of the machine body 1. The grinding wheel spindle 2 is equipped with five grinding wheels of the same size. The bottom of the X-axis adjusting seat 4 is equipped with the first slide rail. The X-axis adjusting seat 4 is slidably connected to the top of the slide rail. The rotation speed of the grinding wheel spindle 2 is controlled by the frequency converter. The X-axis adjusting seat 4, B-axis adjusting seat 6 and Z-axis adjusting seat 7 are all controlled by the servo system.

[0037] In this embodiment, as Figures 1 to 5 As shown, a second slide rail is provided on the back side of the B-axis adjusting seat 6, and the B-axis adjusting seat 6 is slidably connected to the X-axis adjusting seat 4 through the second slide rail. A third slide rail is provided at the bottom of the Z-axis adjusting seat 7, and the Z-axis adjusting seat 7 is slidably connected to the B-axis adjusting seat 6 through the third slide rail. The part-picking robot 10 is vertically set on one side of the top of the grinding wheel spindle 2. The finished product storage slot 11 and the part-picking robot 10 are located on the same horizontal plane, and the finished product storage slot 11 is vertically set on the other side of the top of the grinding wheel spindle 2.

[0038] A method for using a puncture needle tip profile grinding machine, the method comprising the following steps:

[0039] The first step is to push out the piercing needle material from the hopper through the automatic feeding mechanism 8. The automatic feeding mechanism 8 adopts a spring clip staggered stacking structure. The driving rod 803 is pushed by the adjusting cylinder 802, and five needle materials are pushed out at the same time. The curved V-shaped groove formed by multiple circular chrome-plated optical shafts 804 arranged in pairs at the bottom is convenient for positioning and exporting the tube material.

[0040] The second step is to push it to position 9 of the conical positioning clamping mechanism. When the push rod cylinder reaches the stop position, the stop sensor sends a signal.

[0041] The third step is that after receiving the signal, the PLC immediately sends instructions to the A-axis adjustment seat 901, cantilever 905 and needle pressing block 904. Through the movement of the swing arm of the third push rod cylinder 903, the needle pressing block 904 can quickly clamp and release the needle tube. During the clamping process, the needle tube does not move axially, and the five needle pressing blocks 904 move synchronously.

[0042] Fourth step: After the needle is clamped, the PLC continues to send motion commands to the A-axis, Z-axis, X-axis and B-axis. The Z-axis moves up and down perpendicular to the needle axis, the B-axis moves horizontally reciprocating parallel to the needle axis, and the A-axis rotates around the needle axis.

[0043] The fifth step is to align the needle material with the spindle grinding wheel. First, machine the needle bevel angle, i.e., the needle tip angle, and then machine the curved trajectory chamfer and sharpening at the needle tip.

[0044] Step 6: After processing, the A-axis moves to the front of the picking robot 10, and the A-axis chuck 902 is released and the needle pressing block 904 is lifted. After the action is in place, the picking robot 10 lifts up and opens the finger cylinder. When the axis of the finger cylinder is coaxial with the needle tube, the finger cylinder is clamped. Then the A-axis moves backward. When the finished needle is completely pulled out of the A-axis chuck 902, the picking robot 10 swings downward so that the needle tip is upward and the needle tail is aligned with the finished product storage slot 11 below. After the action is in place, the finger cylinder is opened and the needle is placed into the finished product storage slot 11.

[0045] The method of use and advantages of this invention: The working process of this puncture needle tip curve grinding machine is as follows:

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the piercing needle material is first pushed out of the hopper by the automatic feeding mechanism 8. The automatic feeding mechanism 8 adopts a spring clip staggered stacking structure. The adjusting cylinder 802 pushes the drive rod 803, pushing out five needle materials at the same time. Through the curved V-shaped groove formed by multiple circular chrome-plated optical shafts 804 arranged in pairs at the bottom, the needle material is easily positioned and discharged. It is pushed to the conical positioning clamping mechanism 9. When the push rod cylinder reaches the stop position, the stop sensor sends a signal. After receiving the signal, the PLC sends instructions to the A-axis adjusting seat 901, cantilever 905 and needle pressing block 904. Through the swing arm movement of the third push rod cylinder 903, the needle pressing block 904 can quickly clamp and release the needle. During the clamping process, the needle does not move axially. The five needle pressing blocks 904 move synchronously. After the needle is clamped, the PLC continues to send instructions to the A-axis. The Z-axis, X-axis, and B-axis issue motion commands. The Z-axis performs an up-and-down motion perpendicular to the needle tube axis, the B-axis performs a horizontal reciprocating motion parallel to the needle tube axis, and the A-axis rotates around the needle tube axis. Then, the needle tube material is aligned with the spindle grinding wheel. First, the needle tube bevel angle, i.e., the needle tip angle, is machined. Then, the curved trajectory at the needle tip is machined, chamfered, and sharpened. After machining, the A-axis moves in front of the picking robot 10 and releases the A-axis chuck 902 and lifts the needle pressing block 904. After the action is in place, the picking robot 10 lifts up and opens the finger cylinder. When the axis of the finger cylinder is coaxial with the needle tube, the finger cylinder is clamped. Then, the A-axis moves backward. When the finished needle is completely pulled out of the A-axis chuck 902, the picking robot 10 swings downward so that the needle tip is upward and the needle tail is aligned with the finished product storage slot 11 below. After the action is in place, the finger cylinder is opened and the needle is placed into the finished product storage slot 11.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A puncture needle tip profile grinding machine, comprising a machine body (1), characterized in that: A grinding wheel spindle (2) is installed on one side of the top of the machine body (1). An X-axis adjustment seat (4) is provided on the other side of the top of the machine body (1). A first push rod cylinder (3) is installed at one end of the X-axis adjustment seat (4). A B-axis adjustment seat (6) is provided on the X-axis adjustment seat (4). A second push rod cylinder (5) is installed at one end of the B-axis adjustment seat (6). A Z-axis adjustment seat (7) is provided on the B-axis adjustment seat (6). An automatic feeding mechanism (8) is installed on the outside of the machine body (1). A conical positioning clamping mechanism (9) is installed on one side of the grinding wheel spindle (2). A part-picking robot (10) is installed on one side of the top of the grinding wheel spindle (2). A finished product storage trough (11) is installed on the other side of the top of the grinding wheel spindle (2). The conical positioning clamping mechanism (9) includes an A-axis adjusting seat (901), a clamp (902), a third push rod cylinder (903), a pressure pin block (904), and a cantilever (905). The pressure pin block (904) is installed at the top of the A-axis adjusting seat (901), the cantilever (905) is installed at one end of the pressure pin block (904), the third push rod cylinder (903) is installed at one end of the cantilever (905), and the clamp (902) is installed at the bottom of the third push rod cylinder (903). The bottom surface of the pressure pin block (904) is provided with a V-shaped groove, and the V-shaped groove of the pressure pin block (904) is provided with a grinding fluid channel. The pressure pin block (904) is movably connected to the chuck (902) through the third push rod cylinder (903). The A-axis adjustment seat (901) is vertically set on one side of the top of the machine body (1). A layer of water film is generated between the surface of the grinding wheel and the pressure pin block (904). The rotating grinding wheel is not a regular circle from a microscopic perspective. When the high point of the grinding wheel moves directly below the pressure pin block (904), the gap between them will become smaller, which will generate pressure on the water film between them. At the same time, the pressure of the water film will be transmitted to the pressure pin block (904). After the pressure pin block (904) is subjected to force, it will be transmitted to the third push rod cylinder (903) through the hinge point. Finally, it is buffered by the air pressure in the cylinder. After the high point of the rotating grinding wheel passes, the air pressure in the cylinder will compensate in the opposite direction.

2. The puncture needle tip curve grinding machine according to claim 1, characterized in that: The automatic feeding mechanism (8) includes a bracket (801), an adjusting cylinder (802), a drive rod (803), and a circular chrome-plated optical shaft (804). The adjusting cylinder (802) is installed on one side of the top of the bracket (801), the drive rod (803) is installed on one side of the adjusting cylinder (802), and the circular chrome-plated optical shaft (804) is installed at one end of the drive rod (803).

3. The puncture needle tip profile grinding machine according to claim 2, characterized in that: The bracket (801) is connected to the outside of the machine body (1) by bolt thread. The bracket (801) is vertically set on one side of the machine body (1). The adjusting cylinder (802) is located at the top of the bracket (801). The drive rod (803) is vertically set on one side of the bracket (801).

4. The puncture needle tip profile grinding machine according to claim 1, characterized in that: There are four cantilever arms (905), and the four cantilever arms (905) have the same size specifications. There are five pressure pin blocks (904), and the five pressure pin blocks (904) have the same size specifications. The pressure pin blocks (904) are located at the front end of the cantilever arms (905), and the pressure pin blocks (904) and the cantilever arms (905) swing concentrically.

5. The puncture needle tip curve grinding machine according to claim 1, characterized in that: The machine body (1) is rectangular. The grinding wheel spindle (2) is vertically set on one side of the top of the machine body (1). Five grinding wheels are set on the grinding wheel spindle (2). The five grinding wheels have the same size and specifications. The bottom of the X-axis adjustment seat (4) is provided with a first slide rail. The X-axis adjustment seat (4) is slidably connected to the top of the slide rail.

6. The puncture needle tip profile grinding machine according to claim 1, characterized in that: The B-axis adjustment seat (6) is provided with a second slide rail on its back side. The B-axis adjustment seat (6) is slidably connected to the X-axis adjustment seat (4) through the second slide rail. The Z-axis adjustment seat (7) is provided with a third slide rail at its bottom. The Z-axis adjustment seat (7) is slidably connected to the B-axis adjustment seat (6) through the third slide rail. The part-picking robot (10) is vertically arranged on one side of the top of the grinding wheel spindle (2). The finished product storage slot (11) and the part-picking robot (10) are located on the same horizontal plane. The finished product storage slot (11) is vertically arranged on the other side of the top of the grinding wheel spindle (2).

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