Implant force limiting type digital wrench 10: 1 bending machine head
By employing a combination of springs and steel balls in the bending head of the dental implant force-limiting digital wrench, the problems of inaccurate output torque and easy overshooting have been solved, achieving precise torque control and improved safety.
Patent Information
- Application Number
- CN202423286840.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2034-12-31
AI Technical Summary
In the current dental field, the torque output accuracy of digital implant wrenches with curved heads is not high, and overshoot is prone to occur, especially at high speeds.
It adopts a combination structure of spring and steel ball. By setting the output torque value, when the torque at the end of the needle bar is greater than the set value, the steel ball disk rotates due to friction to prevent overshoot and achieve accurate torque output.
It improves the accuracy of output torque, avoids overshoot, and enhances the safety and success rate of dental surgery.
Smart Images
Figure CN223944493U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to dental medical instrument technical field especially relates to a kind of implant force limiting digital wrench 10:1 bending machine head. BACKGROUND
[0002] Digital implant is used for dental preoperative design, implant implantation and repair process, in operation, using torque wrench to tighten and take out covering screw or healing abutment, to meet different implant needs, need to use multiple different head wrench (torque needle rod), this needs to have a larger torque range bending machine head to meet the implant needs under different applications, in present dental field, the output torque accuracy of implant digital wrench bending machine head is not high, in the process of abutment screw locking, overshoot is easily formed, (such as machine setting output torque 30N·cm, actual needle rod terminal output torque peak far exceeds 30N·cm, especially the faster the speed, the more obvious the overshoot phenomenon) the utility model discloses a kind of dental implant force limiting digital wrench bending machine head, by a kind of spring, steel ball combination structure, when machine sets certain output torque, head is also set to the same torque value, once needle rod terminal is blocked torque greater than set torque, steel ball disc will occur friction rotation, to prevent overshoot, improve the accuracy of output torque.
[0003] In present dental field, the output torque accuracy of implant digital wrench bending machine head is not high, in the process of abutment screw locking, overshoot is easily formed, (such as machine setting output torque 30N·cm, actual needle rod terminal output torque peak far exceeds 30N·cm, especially the faster the speed, the more obvious the overshoot phenomenon). SUMMARY
[0004] To solve the above technical problems, the utility model provides a kind of dental implant force limiting digital wrench bending machine head.
[0005] The technical scheme adopted by the utility model is as follows: a kind of implant force limiting digital wrench 10:1 bending machine head, including back cover component, machine core component, bending machine head shell, transmission shaft component, speed reducer box force limiting mechanism combination component,
[0006] The back cover component includes pressing cover, conical spring and back cover, the small end of the conical spring is sleeved on the pressing cover, the back cover is provided with an inner buckle, and the pressing cover and the conical spring are pressed into the back cover to form a component;
[0007] The machine core component includes bearing one, card needle shaft core and card needle two petal springs, the card needle two petal springs are pressed into the card needle shaft core by tooling, the card needle shaft core is provided with an inner buckle to prevent the card needle two petal springs from falling out, and the bearing one is assembled at both ends of the card needle shaft core;
[0008] The transmission shaft component includes a rod lotus-shaped gear, a bearing two, a straight rod shaft body, a cylindrical pin one, a friction disc, the bearing two is assembled at both ends of the straight rod shaft body, the rod lotus-shaped gear passes through the bearing two and the straight rod shaft body, and one end of a pin hole is exposed, and the friction disc is assembled into the rod lotus-shaped gear, the cylindrical pin one is assembled in the transmission shaft component, and the cylindrical pin one cannot be taken out by means of laser spot welding;
[0009] The speed reducer limit mechanism combined component includes a bearing one, a cylindrical pin one, a scale disc, a steel ball, a steel ball chuck, a cylindrical pin two, a steel ball pin peg limiting disc, a cylindrical spring, a limit guide piece, a driving nut, a limit structure shell, a guide cylindrical pin, a stepped pin, a speed reducer shell, a bearing inner ring top cover, a rotary planet carrier, a lubricating copper sleeve, a gear pin, a planetary gear, an inner gear ring, a central gear, a bearing three, a lotus-shaped gear and a shell end cover.
[0010] As further improvement of the utility model, the gear pin is assembled into the rotary planet carrier, the planetary gear is assembled into the rotary planet carrier, the lubricating copper sleeve is assembled into the inner hole of the rotary planet carrier, the central gear is inserted into the inner hole of the rotary planet carrier, the bearing three is assembled into the bearing position of the central gear, the lotus-shaped gear is assembled onto the central gear, and the cylindrical pin one is assembled into the component and cannot be taken out by means of laser spot welding.
[0011] As further improvement of the utility model, the bearing one is assembled into the rotary planet carrier shaft, another bearing one is assembled to the outside of the speed reducer shell, the inner gear ring is assembled into the speed reducer shell, the central gear has been assembled part is assembled into the speed reducer shell, the bearing inner ring top cover is assembled onto the rotary planet carrier, and the cylindrical pin one cannot be taken out by means of laser spot welding.
[0012] As further improvement of the utility model, the shell end cover is connected with the speed reducer shell through threads, the stepped pin is assembled into the limit structure shell, and the above-mentioned part is assembled into the limit structure shell through threads, the driving nut is screwed into the corresponding thread position of the limit structure shell, the limit guide piece is inserted into the rotary planet carrier shaft, the position is adjusted, the pin hole is matched with the U-shaped groove of the limit structure shell, the guide cylindrical pin is arranged on both sides, the cylindrical spring is arranged, the steel ball pin peg limiting disc is arranged, the steel ball chuck is arranged, the steel ball pin peg limiting disc is opened by means of a tool, and the position is adjusted, the cylindrical pin two is assembled into the pin hole from the empty position in the limit structure shell, the steel ball pin peg limiting disc is released, the pin cannot be taken out under the spring force, the steel ball is arranged into the steel ball hole, the scale disc is assembled into the corresponding rib position of the driving nut, and the speed reducer limit mechanism combined component is formed.
[0013] As a further improvement of the utility model, the reduction ratio of the reduction gearbox force limiting mechanism combined part is 4:1, there is no reduction between the reduction gearbox force limiting mechanism combined part and the transmission shaft part, the reduction ratio between the transmission shaft part and the core part is 2.5:1, and the total reduction ratio of the whole bending machine head is 10:1.
[0014] As a further improvement of the utility model, when the torsion needle rod is loaded, the notch part of the torsion needle rod is aligned with the corresponding step of the clamping needle shaft core, is pushed up, the head part of the torsion needle rod opens the two spring halves of the clamping needle, and the clamping groove of the torsion needle rod is clamped into the boss of the two spring halves of the clamping needle; the conical spring is compressed by pressing the pressing cover, the two spring halves of the clamping needle are opened by the pressing cover, and then the torsion needle rod is taken out, so that the needle rod is convenient to load and unload and other models of needle rods are convenient to replace.
[0015] As a further improvement of the utility model, the cylindrical spring can be compressed to different degrees by rotating the scale disc, different normal forces are provided, different sliding friction forces of the steel ball and the friction disc are generated under different torsion conditions, and then the force limiting function is realized.
[0016] As a further improvement of the utility model, the bending machine head shell is provided with a wave-shaped gasket, a silica gel pressing ring and a silica gel pad, the silica gel pad is preassembled into the silica gel pressing ring and is assembled into the bending machine head shell together, and the wave-shaped gasket is placed; the core part is assembled into the bending machine head shell; the rear cover part is assembled into the bending machine head shell and is locked through threaded connection; the transmission shaft part is assembled into the bending machine head shell and is locked through threaded connection; the reduction gearbox force limiting mechanism combined part is assembled into the bending machine head shell and is locked through threaded connection, end face positioning is completed, and the assembly of the bending machine head is realized.
[0017] As a further improvement of the utility model, the scale disc in the reduction gearbox force limiting mechanism combined part can set different torque values, so that the steel ball and the friction disc can rotate relatively when the load meets resistance and reaches the set torque value, the overshoot phenomenon is avoided, and the accuracy of the output torque is improved.
[0018] As a further improvement of the utility model, the semicircular groove in the shell end cover is convenient for aligning and pressing the steel ball of the handle, so that the bending machine head is more convenient and reliable to plug in and plug out of the handle.
[0019] The utility model discloses the beneficial effects: the utility model discloses a spring, steel ball combination structure, when the machine sets a certain output torque, the head is also set to the same torque value, once the needle rod terminal is blocked and the torque is greater than the set torque, the steel ball disc will generate friction rotation, thereby preventing the overshoot, and the accuracy of the output torque is improved. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is a kind of main view of the utility model one kind of implant force limiting type digital wrench 10:1 bending machine head.
[0021] Figure 2 is the axial drawing of the 10:1 bending machine head of the implant force limiting type digital wrench 10 of the utility model;
[0022] Figure 3 is the explosion view (1) of the 10:1 bending machine head of the implant force limiting type digital wrench 10 of the utility model;
[0023] Figure 4 is the explosion view (2) of the 10:1 bending machine head of the implant force limiting type digital wrench 10 of the utility model;
[0024] Figure 5 is the sectional view of the 10:1 bending machine head of the implant force limiting type digital wrench 10 of the utility model.
[0025] As shown in the figure: 01, back cover part; 02, machine core part; 03, wave gasket; 04, silica gel pressure ring; 05, silica gel pad; 06, bending machine head shell; 07, transmission shaft part; 08, speed reducer box force limiting mechanism combination part; 09, press cover; 10, conical spring; 11, back cover; 12, bearing one; 13, pin shaft core; 14, pin two petal spring; 15, with rod lotus tooth; 16, bearing two; 17, straight rod shaft body; 18, cylindrical pin one; 19, friction disc; 20, dial; 21, steel ball; 22, steel ball chuck; 23, cylindrical pin two; 24, steel ball pin limit disc; 25, cylindrical spring; 26, force limiting guide; 27, drive nut; 28, force limiting structure shell; 29, guide cylindrical pin; 30, step pin; 31, speed reducer box shell; 32, bearing inner ring top cover; 33, rotary planet carrier; 34, lubricating copper sleeve; 35, gear pin; 36, planetary gear; 37, inner ring; 38, center gear; 39, bearing three; 40, lotus tooth; 41, shell end cover. DETAILED DESCRIPTION
[0026] In the present specification, the orientation terms such as up, down, left, right, front, back, top, bottom, etc. mentioned or possibly mentioned are defined relative to its structure, which are relative concepts. Therefore, it is possible to change accordingly according to its different positions, different use states; therefore, these or other orientation terms should not be interpreted as restrictive terms.
[0027] The singular forms "a", "said" and "the" used in the present specification are intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein means and includes any or all possible combinations of one or more associated listed items.
[0028] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0029] This utility model provides the following: Figures 1-5 The implant-supported force-limiting digital wrench with a 10:1 bending head shown includes a rear cover component 01, a core component 02, a bending head housing 06, a drive shaft component 07, and a gearbox force-limiting mechanism assembly 08.
[0030] The rear cover component 01 includes a press cover 09, a conical spring 10, and a rear cover 11. The small end of the conical spring 10 is sleeved on the press cover 09. An inner buckle is provided inside the rear cover 11. The press cover 09 and the conical spring 10 are pressed into the rear cover 11 to form a component.
[0031] The movement component 02 includes a bearing 12, a pin shaft 13, and a pin two-lobed spring 14. The pin two-lobed spring 14 is pressed into the pin shaft 13 by a tooling. The pin shaft 13 is provided with an inner buckle to prevent the pin two-lobed spring 14 from coming out. The bearing 12 is assembled at both ends of the pin shaft 13.
[0032] The transmission shaft component 07 includes a rod lotus tooth 15, a bearing 16, a straight rod shaft body 17, a cylindrical pin 18, a friction disc 19, the bearing 16 is assembled at both ends of the straight rod shaft body 17, the rod lotus tooth 15 passes through the bearing 16 and the straight rod shaft body 17, the one end with a pin hole is exposed, and the friction disc 19 is assembled into the rod lotus tooth 15, the cylindrical pin 18 is assembled in the transmission shaft component 07, and the cylindrical pin 18 cannot be taken out by laser spot welding; the speed reducer box force limiting mechanism combined component 08 includes a bearing 12, a cylindrical pin 18, a dial 20, a steel ball 21, a steel ball chuck 22, a cylindrical pin 23, a steel ball pin peg limiting disc 24, a cylindrical spring 25, a force limiting guide 26, a driving nut 27, a force limiting structure shell 28, a guide cylindrical pin 29, a stepped pin 30, a speed reducer box shell 31, a bearing inner ring top sleeve 32, a rotating planet carrier 33, a lubricating copper sleeve 34, a gear pin 35, a planetary gear 36, an inner ring gear 37, a sun gear 38, a bearing 39, a lotus tooth 40, a shell end cover 41, the gear pin 35 is assembled into the rotating planet carrier 33, the planetary gear 36 is assembled into the rotating planet carrier 33, the lubricating copper sleeve 34 is assembled into the inner hole of the rotating planet carrier 33, the sun gear 38 passes into the inner hole of the rotating planet carrier 33, the bearing 39 is assembled into the bearing position of the sun gear 38, the lotus tooth 40 is assembled into the sun gear 38, the cylindrical pin 18 is assembled in the component and cannot be taken out by laser spot welding, the bearing 12 is assembled into the shaft of the rotating planet carrier 33, the other bearing 12 is assembled to the outside of the speed reducer box shell 31, the inner ring gear 37 is assembled into the speed reducer box shell 31, the assembled part of the sun gear is assembled into the speed reducer box shell 31, the bearing inner ring top sleeve 32 is assembled to the rotating planet carrier 33, the cylindrical pin 18 cannot be taken out by laser spot welding, the shell end cover 41 is connected with the speed reducer box shell 31 through threads, the stepped pin 30 is assembled into the force limiting structure shell 28, and the above-mentioned part is assembled into the force limiting structure shell 28 through threads, the driving nut 27 is screwed into the corresponding thread position of the force limiting structure shell 28, the force limiting guide 26 penetrates into the shaft of the rotating planet carrier 33, the position is adjusted, the pin hole is matched with the U-shaped groove of the force limiting structure shell 28, the guide cylindrical pin 29 is loaded on both sides, the cylindrical spring 25 is loaded, the steel ball pin peg limiting disc 24 is loaded, the steel ball chuck 22 is loaded, the steel ball pin peg limiting disc 24 is opened by a tool and the position is adjusted, the cylindrical pin 23 is assembled from the empty position in the force limiting structure shell 28 to the pin hole, the steel ball pin peg limiting disc 24 is released, the pin cannot be taken out under the spring force, the steel ball 21 is loaded into the steel ball hole, the dial 20 is assembled into the corresponding rib position of the driving nut 27, and the speed reducer box force limiting mechanism combined component 08 is formed.
[0033] The reduction ratio between the transmission shaft part 07 and the core part 02 is 2.5:1, and the total reduction ratio of the whole bending machine head is 10:1.
[0034] When the torsion needle rod is loaded, the notch part of the torsion needle rod is aligned with the corresponding step of the clamping needle shaft core 13, is pushed up, the head of the torsion needle rod pushes open the clamping needle two spring halves 14, the clamping groove of the torsion needle rod is clamped into the boss of the clamping needle two spring halves 14, the conical spring 10 is compressed by pressing the pressing cover 09, the clamping needle two spring halves 14 are pushed open, and then the torsion needle rod is taken out, so that the needle rod is convenient to load and unload and other models of needle rods are replaced.
[0035] The utility model discloses a scale disc 20 can be rotated, can compress cylindrical spring 25 to different degree, provides different normal pressure, thereby makes steel ball 21 and friction disc 19 produce different sliding friction force under different torsion conditions, and then realizes the function of limiting force.
[0036] The utility model discloses a wave gasket 03, silica gel pressure ring 04, silica gel pad 05 are equipped in the bending machine head shell 06, and the silica gel pad 05 is preassembled into silica gel pressure ring 04, and is assembled into the bending machine head shell 06 together, and is put into wave gasket 03, the core part 02 is assembled to the bending machine head shell 06, the rear cover part 01 is assembled to the bending machine head shell 06 and is locked through screw thread connection, the transmission shaft part 07 is assembled to the bending machine head shell 06 and is locked through screw thread connection, the reduction gearbox limiting mechanism combined part 08 is assembled to the bending machine head shell 06 and is locked through screw thread connection, and the end face positioning is completed, realizes the assembly of the bending machine head.
[0037] The scale disc 20 in the reduction gearbox limiting mechanism combined part 08 can set different torque values, so that the steel ball 21 and the friction disc 19 will form relative rotation when the load meets resistance and reaches the set torque value, the overshoot phenomenon is avoided, and the accuracy of the output torque is improved.
[0038] The semicircular groove in the shell end cover 41 is convenient for aligning and pressing the steel ball of the handle, so that the bending machine head is more convenient and reliable when being inserted and pulled out of the handle.
[0039] Working principle: (1) torque setting: when the operator sets a certain output torque value, for example, 30N·cm, the scale disc 20 can be rotated to compress the cylindrical spring 25 to different degrees. Through the compression of the cylindrical spring 25, different normal pressures are provided, so that the steel ball 21 and the friction disc 19 generate different sliding friction forces under different torsion conditions. The rotation of the scale disc 20 can accurately set different torque values, so that the torque output by the machine head is consistent with the set value.
[0040] (2) Transmission process: The output of the motor is transmitted to the transmission shaft component 07 through the combination of the reduction box and the force limiting mechanism component 08. The reduction ratio in the reduction box and force limiting mechanism component 08 is 4:1, ensuring the stability and accuracy of the output torque. The reduction ratio between the transmission shaft component 07 and the movement core component 02 is 2.5:1, further improving the reliability of torque output. The total reduction ratio of the entire bending head is 10:1, ensuring the stability and efficiency of the torque transmission process from the motor to the needle rod terminal.
[0041] (3) Force limiting mechanism: During the locking process of the base screw, if the needle rod terminal encounters resistance and the torque is greater than the set value, for example, 30 N·cm, a sliding friction force will be generated between the steel ball 21 and the friction disc 19. The size of the sliding friction force is controlled by the compression degree of the cylindrical spring 25, so that the friction force between the steel ball 21 and the friction disc 19 can be adjusted under different set torque conditions. Once the torque exceeds the set value, the steel ball disc will rotate by friction, thereby releasing the excess torque and preventing overshoot.
[0042] (4) Needle rod assembly and disassembly: The assembly and disassembly of the torsion needle rod is very convenient. The notch part of the torsion needle rod is aligned with the corresponding step of the card needle shaft core 13, and the needle rod head is pushed to open the card needle two-spring 14, so that the needle rod card slot is carded into the boss of the card needle two-spring 14. Press the press cover 09 to compress the conical spring 10, and the press cover 09 opens the card needle two-spring 14, so that the needle rod is easily taken out, and different types of needle rods are easily replaced.
[0043] (5) Stability of mechanical structure: The bending head shell 06 is provided with a wave-shaped gasket 03, a silica gel pressure ring 04 and a silica gel pad 05, which can provide good sealing and damping effect, improve the service life and stability of the bending head. Each component is locked by screw connection, ensuring the reliability and stability of assembly.
[0044] (6) Handle connection: The semicircular groove in the shell end cover 41 is designed to facilitate the alignment and compression of the steel ball of the handle, making the bending head and the handle more convenient and reliable when plugging in and out. The use of the stepped pin 30 further ensures the alignment of the bending head and the handle, improving the reliability of the connection.
[0045] The dental implant force limiting digital wrench 10:1 bending head of the utility model not only has a significant improvement in the accuracy of output torque, but also performs well in terms of convenience and reliability. This design effectively solves the problem of inaccurate output torque and easy overshoot in the prior art, improving the safety and success rate of dental surgery.
[0046] The foregoing embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A 10:1 bending head for implant force limiting digital wrenches, characterized in that, Includes rear cover assembly (01), mechanism assembly (02), bending head housing (06), drive shaft assembly (07), and gearbox force limiting mechanism assembly (08). The rear cover component (01) includes a press cover (09), a conical spring (10), and a rear cover (11). The small end of the conical spring (10) is sleeved on the press cover (09). An inner buckle is provided inside the rear cover (11). The press cover (09) and the conical spring (10) are pressed into the rear cover (11) to form a component. The mechanism component (02) includes a bearing (12), a pin shaft (13), and a pin two-lobed spring (14). The pin two-lobed spring (14) is pressed into the pin shaft (13) by a tooling. The pin shaft (13) is provided with an inner buckle to prevent the pin two-lobed spring (14) from coming out. The bearing (12) is assembled at both ends of the pin shaft (13). The drive shaft component (07) includes a lotus tooth with a rod (15), a second bearing (16), a straight shaft (17), a first cylindrical pin (18), and a friction disc (19). The second bearing (16) is assembled at both ends of the straight shaft (17). The lotus tooth with a rod (15) passes through the second bearing (16) and the straight shaft (17), with one end of the pin hole exposed. The friction disc (19) is assembled into the lotus tooth with a rod (15). The first cylindrical pin (18) is assembled into the drive shaft component (07). Laser spot welding is used to prevent the first cylindrical pin (18) from coming out. The gearbox force limiting mechanism assembly (08) includes bearing one (12), cylindrical pin one (18), dial (20), steel ball (21), steel ball chuck (22), cylindrical pin two (23), steel ball pin limiting disc (24), cylindrical spring (25), force limiting guide (26), drive nut (27), force limiting structure housing (28), guide cylindrical pin (29), stepped pin (30), gearbox housing (31), bearing inner ring top sleeve (32), rotating planetary carrier (33), lubricating copper sleeve (34), gear pin (35), planetary gear (36), internal gear ring (37), center gear (38), bearing three (39), lotus tooth (40), and housing end cover (41).
2. The implant-limiting digital wrench 10:1 bending head according to claim 1, characterized in that, The gear pin (35) is assembled into the rotating planetary carrier (33), the planetary gear (36) is assembled into the rotating planetary carrier (33), the lubricating copper sleeve (34) is assembled into the inner hole of the rotating planetary carrier (33), the central gear (38) passes through the inner hole of the rotating planetary carrier (33), the bearing three (39) is assembled into the bearing position of the central gear (38), the lotus tooth (40) is assembled into the central gear (38), and the cylindrical pin one (18) is assembled into the component and laser spot welded to prevent it from coming out.
3. The implant-limiting digital wrench 10:1 bending head according to claim 2, characterized in that, The first bearing (12) is assembled into the rotating planetary carrier (33) shaft, the other bearing (12) is assembled into the outside of the gearbox housing (31), the internal gear ring (37) is assembled into the gearbox housing (31), the assembled part of the central gear is assembled into the gearbox housing (31), the bearing inner ring top sleeve (32) is assembled into the rotating planetary carrier (33), and the cylindrical pin (18) is laser-spot welded to prevent it from coming out.
4. The implant-limiting digital wrench 10:1 bending head according to claim 3, characterized in that, The end cap (41) of the housing is connected to the gearbox housing (31) by threads. The stepped pin (30) is assembled into the force-limiting structure housing (28), and the above-mentioned parts are assembled into the force-limiting structure housing (28) by threads. The drive nut (27) is screwed into the corresponding thread of the force-limiting structure housing (28). The force-limiting guide (26) passes through the rotating planetary carrier (33) shaft. The position is adjusted so that the pin hole aligns with the U-shaped groove of the force-limiting structure housing (28). The guide cylindrical pins (29) are installed on both sides, and the cylindrical spring is placed in. 25) Place the ball pin limiting plate (24) and the ball chuck (22) into the ball pin limiting plate (24) using a tool and adjust its position. Assemble the cylindrical pin (23) from the clearance position in the force limiting structure housing (28) into the pin hole. Release the ball pin limiting plate (24). Under the spring force, the pin cannot be dislodged. Place the ball (21) into the ball hole. Assemble the scale (20) into the corresponding rib position of the drive nut (27) to form the gearbox force limiting mechanism assembly (08).
5. The implant-limiting digital wrench 10:1 bending head according to claim 1, characterized in that, The reduction ratio in the gearbox force limiting mechanism assembly (08) is 4:
1. There is no reduction between the gearbox force limiting mechanism assembly (08) and the transmission shaft assembly (07). The reduction ratio between the transmission shaft assembly (07) and the core assembly (02) is 2.5:
1. The total reduction ratio of the entire bending head is 10:
1.
6. The implant-limiting digital wrench 10:1 bending head according to claim 1, characterized in that, The bending head housing (06) is provided with a wave-shaped gasket (03), a silicone pressure ring (04), and a silicone pad (05). The silicone pad (05) is pre-installed in the silicone pressure ring (04) and assembled together into the bending head housing (06). The wave-shaped gasket (03) is then placed in the housing. The core component (02) is assembled into the bending head housing (06). The rear cover component (01) is assembled into the bending head housing (06) and locked by a threaded connection. The drive shaft component (07) is assembled into the bending head housing (06) and locked by a threaded connection. The gearbox force limiting mechanism assembly component (08) is assembled into the bending head housing (06) and locked by a threaded connection. The end face positioning is completed, and the bending head assembly is realized.
7. The implant-supported force-limiting digital wrench 10:1 bending head according to claim 1, characterized in that, The semi-circular groove in the end cap (41) of the housing is aligned and pressed against the steel ball of the handle.