Servo press with pressure monitoring function
By using a servo press with pressure monitoring, the motor shaft is clamped in a V-groove with thin and thick extension blocks. Combined with pressure and displacement sensors, the problems of inaccurate gear pressing depth control and unstable motor shaft positioning in precision motor assembly are solved, achieving high-precision assembly results.
Patent Information
- Application Number
- CN202520176711.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-28
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-01-28
AI Technical Summary
In the process of precision motor assembly, inaccurate control of gear press-in depth and unstable motor shaft positioning make it impossible for traditional clamping devices to achieve high-precision axial and radial positioning, resulting in the risk of gear tilting and motor damage.
A servo press with pressure monitoring is used, which clamps the motor shaft through V-grooves of thin and thick extension blocks. Combined with pressure and displacement sensors, it achieves precise positioning and real-time force monitoring, ensuring that the gear is pressed in accurately to the predetermined depth.
This improves assembly accuracy and reliability, avoids gear misalignment and motor damage, and ensures the stability and precision of the motor shaft during the assembly process.
Smart Images
Figure CN223748950U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a press machine technical field especially a kind of servo press machine with pressure monitoring. BACKGROUND
[0002] In the assembly process of certain precision motor, gear needs to be pressed into motor shaft with accurate depth of 0.15±0.03mm, and the requirement of assembly process is very high. In order to ensure that the gear can be accurately embedded into the specified position, the prior art usually introduces a pressure sensor and a displacement sensor to assist the assembly process, wherein the pressure sensor is used to monitor the pressure applied in the pressing process in real time, to ensure that the motor assembly is not damaged or the gear pressing depth exceeds the allowable range due to excessive force; the displacement sensor is used to accurately control the moving distance of the pressing mechanism, so as to ensure that the gear can be accurately pressed into the motor shaft according to the predetermined depth.
[0003] However, when the motor is installed and positioned, the traditional clamping device can only provide limited positioning accuracy, especially when assembling a precision motor with complex structure, this limitation is particularly obvious. Since high-precision axial and radial positioning cannot be achieved, when the pressing mechanism starts to work, the gear may not be completely located in the center of the motor shaft, which may cause the problem of gear tilting. For the precision motor in the present scheme, hollow grooves are provided on both sides, which allows the internal motor shaft to be directly observed. However, the traditional fixture can only act on the outside of the motor body when fixing these motors. Such clamping method not only easily scratches the motor shell, but also may cause the motor shaft to be unbalanced when under stress due to lack of enough support points, further increasing the risk of assembly error.
[0004] Therefore, the inventor designs a servo press machine with pressure monitoring to solve the above problems. UTILITY MODEL CONTENTS
[0005] In view of the defects of the above prior art, the utility model provides a servo press machine with pressure monitoring, which aims to solve the problem of inaccurate gear pressing depth control and unstable motor shaft positioning during assembly of the precision motor in the prior art.
[0006] To achieve the above object, the technical scheme adopted by the utility model is: a servo press with pressure monitoring, including machine table, the machine table is provided with pressure frame, the bottom of pressure frame is provided with motor positioning assembly, the top of pressure frame is provided with gear press-in assembly, motor positioning assembly includes motor positioning table, double head pneumatic cylinder arranged on motor positioning table and motor positioning unit symmetrically arranged on both sides of double head pneumatic cylinder output end, motor positioning unit includes positioning clamp, the output of positioning clamp is provided with motor body avoidance slot, two sheet extension blocks in the upper portion of motor body avoidance slot and two thick sheet extension blocks in the lower portion of motor body avoidance slot, V-shaped clamping groove is arranged on sheet extension block and thick sheet extension block, the V-shaped clamping groove of two sheet extension blocks holds the outside shaft section of motor shaft together, the V-shaped clamping groove of two thick sheet extension blocks holds the inside shaft section of motor shaft in the motor body together.
[0007] Based on the above, the servo press with pressure monitoring has the beneficial effects of solving the problems of inaccurate gear press-in depth control and unstable motor shaft positioning during precise motor assembly in the prior art, mainly embodied in:
[0008] 1, the utility model discloses through using sheet extension block and holding the outside shaft section of relatively small motor shaft, and using thick sheet extension block and holding the inside shaft section relatively thick and in the motor body, can more accurately adapt to the actual shape change of motor shaft in inside and outside two places, ensure that the motor shaft maintains accurate axial and radial position during the whole assembly process, effectively avoid the phenomenon that may appear when the gear is pressed in skewing,
[0009] 2, the utility model discloses that the thick sheet extension block holds the inside shaft section, and the contact area of the dispersion force is increased by increasing the holding contact area, while ensuring that the motor shaft is not deformed or damaged under uniform stress, the stable positioning of the bottom end of the motor shaft is completed, sliding or deviation is avoided, and the problem that the motor body may be damaged by directly clamping the motor body in the traditional way is also avoided,
[0010] 3, the utility model discloses that the V-shaped clamping groove on the sheet extension block and the thick sheet extension block solves the problem that the traditional clamp can not realize accurate positioning by clamping the motor shaft with two plane clamping blocks, and when the V-shaped clamping groove clamps the motor shaft, two faces at each V-shaped clamping groove simultaneously push the motor shaft, and finally two V-shaped clamping grooves complete stable positioning, improve the assembly precision and reliability.
[0011] Further, the motor positioning unit further includes a sliding block and a slide rail located below the sliding block, the sliding block is arranged at the lower end of the positioning clamp, and the sliding block is slidingly fitted on the slide rail, and the motor body is placed between the two slide rails.
[0012] Based on the above, the beneficial effects of the slider and the slide rail are to adjust the positioning clamp along the slide rail transversely, which provides wider compatibility and adaptability for motors of different sizes and ensures the best assembly position.
[0013] Further, the motor positioning assembly further comprises a sensor mounting table and a pressure sensor arranged on the sensor mounting table, the top of the pressure sensor is in contact with the motor positioning table, and a plurality of buffer pins are connected between the two sides of the sensor mounting table and the motor positioning table.
[0014] Based on the above, the beneficial effects of the pressure sensor are to monitor the force applied to the motor shaft in real time during the pressing process, and to ensure that the motor assembly is not damaged or the gear pressing depth exceeds the allowed range during the assembly process; the beneficial effects of the buffer pin are that when an unexpected impact is encountered, the buffer pin can absorb and disperse energy, thereby protecting the pressure sensor and avoiding damage to the motor positioning table.
[0015] Further, the gear pressing assembly comprises a rotary pressing motor, a shaft coupling, a lead screw and a pressing unit, the rotary pressing motor is arranged at the top of the pressure frame, the lead screw is connected to the output end of the rotary pressing motor through the shaft coupling, the four corners of the pressing unit are slidingly fitted on the sliding support columns at the four corners of the pressure frame, and the pressing unit is threadedly fitted on the lead screw.
[0016] Based on the above, the beneficial effects of the thread fitting between the lead screw and the pressing unit are to achieve fine control of the vertical movement distance of the pressing unit driven by the rotary pressing motor, thereby ensuring that the gear can be accurately pressed into the motor shaft according to the predetermined depth, meeting the requirements of precise assembly.
[0017] Further, the pressing unit comprises an internally threaded sleeve, a sliding plate, a displacement sensor and a pressing contact head, the internally threaded sleeve is threadedly fitted on the lead screw, the four corners of the sliding plate are slidingly fitted on the sliding support columns at the four corners of the pressure frame, the displacement sensor is arranged at the lower end of the sliding plate, and the pressing contact head is arranged at the lower end of the displacement sensor and used to contact the gear and press it into the motor shaft, and the pressing contact head and the displacement sensor are electrically connected.
[0018] Based on the above, the beneficial effects of the displacement sensor are to directly measure and feedback the movement distance of the pressing unit, thereby ensuring that the gear can be accurately embedded in the motor shaft according to the predetermined depth.
[0019] In order to make the above features of the utility model and the purposes to be achieved more clearly, the utility model will be further described in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 : is a perspective view of the utility model;
[0021] Figure 2 : is the installation schematic view of the motor positioning assembly and gear press-in assembly of the utility model;
[0022] Figure 3 : is the schematic view of the motor positioning assembly of the utility model for installing the motor;
[0023] Figure 4 : is the schematic view of the motor positioning assembly of the utility model without installing the motor.
[0024] The drawing number explanation: 1- machine table, 2- pressure frame, 21- sliding support column, 3- motor positioning assembly, 31- motor positioning table, 32- double head cylinder, 33- motor positioning unit, 331- positioning clamp, 3311- motor body avoidance groove, 3312- sheet extension block, 3313- thick sheet extension block, 3314- V-shaped clamping groove, 332- sliding block, 333- sliding rail, 34- sensor installation table, 35- pressure sensor, 36- buffer pin, 4- gear press-in assembly, 41- rotary down pressure motor, 42- coupling, 43- screw rod, 44- down pressure unit, 441- internal thread sleeve, 442- sliding plate, 443- displacement sensor, 444- down pressure contact head, 5- motor shaft, 51- external shaft section, 52- internal shaft section, 6- motor body. DETAILED DESCRIPTION
[0025] As Figures 1-4 shown, a servo press with pressure monitoring, including machine table 1, the machine table 1 is provided with pressure frame 2, the bottom end of the pressure frame 2 is configured with motor positioning assembly 3, the top end of the pressure frame 2 is configured with gear press-in assembly 4, the motor positioning assembly 3 includes motor positioning table 31, double head cylinder 32 configured on the motor positioning table 31 and motor positioning unit 33 symmetrically configured on the output end of the double head cylinder 32, the motor positioning unit 33 includes positioning clamp 331, the output end of the positioning clamp 331 is provided with motor body avoidance groove 3311, two sheet extension blocks 3312 located on the upper part of the motor body avoidance groove 3311 and two thick sheet extension blocks 3313 located on the lower part of the motor body avoidance groove 3311, V-shaped clamping groove 3314 is arranged on the sheet extension block 3312 and thick sheet extension block 3313, the V-shaped clamping groove 3314 of the two sheet extension blocks 3312 cooperatively holds the external shaft section 51 of motor shaft 5, the V-shaped clamping groove 3314 of the two thick sheet extension blocks 3313 cooperatively holds the internal shaft section 52 of motor shaft 5 located in motor body 6.
[0026] As shown in the figure, the motor positioning unit 33 further comprises a sliding block 332 and a sliding rail 333 below the sliding block 332, the sliding block 332 is arranged at the lower end of the positioning clamp 331, the sliding block 332 is slidingly matched on the sliding rail 333, and the motor body 6 is placed between the two sliding rails 333.
[0027] The motor positioning assembly 3 further comprises a sensor mounting table 34 and a pressure sensor 35 arranged on the sensor mounting table 34, the top of the pressure sensor 35 is in contact with the motor positioning table 31, and a plurality of buffer pins 36 are connected between the two sides of the sensor mounting table 34 and the motor positioning table 31.
[0028] The gear pressing assembly 4 comprises a rotating pressing motor 41, a shaft coupling 42, a lead screw 43 and a pressing unit 44, the rotating pressing motor 41 is arranged at the top of the pressure frame 2, the lead screw 43 is connected to the output end of the rotating pressing motor 41 through the shaft coupling 42, the pressing unit 44 is slidingly matched on the sliding support column 21 at the four corners of the pressure frame 2, and the pressing unit 44 is threadedly matched on the lead screw 43.
[0029] The pressing unit 44 comprises an internally threaded sleeve 441, a sliding plate 442, a displacement sensor 443 and a pressing contact head 444, the internally threaded sleeve 441 is threadedly matched on the lead screw 43, the sliding plate 442 is slidingly matched on the sliding support column 21 at the four corners of the pressure frame 2, the displacement sensor 443 is arranged at the lower end of the sliding plate 442, and the pressing contact head 444 is arranged at the lower end of the displacement sensor 443, used for contacting the gear and pressing the gear into the motor shaft 5, and the pressing contact head 444 and the displacement sensor 443 are electrically connected.
[0030] According to the specific implementation manner of the utility model, firstly, the motor body 6 to be assembled is placed between the two sliding rails 333, and the motor positioning unit 33 on both sides is driven to move by the double-head air cylinder 32 in the motor positioning assembly 3, the positioning clamp 331 on the motor positioning unit 33 moves, the thin sheet extension block 3312 and the thick sheet extension block 3313 in the positioning clamp 331 respectively extend from the outer shaft section 51 and the inner shaft section 52 to accurately clamp the motor shaft 5 in the V-shaped clamping groove 3314,
[0031] With the successful positioning of the thick extension block 3313 through the motor body 6 to the inner shaft section 52 of the motor shaft 5, the pressure sensor 35 begins to monitor the pressure from the motor shaft 5 in real time, at this time the operator or other equipment places the gear on the upper end of the motor shaft 5, rotates the downward pressing motor 41 to drive the lead screw 43 through the shaft coupling 42, and then drives the internally threaded sleeve 441 threaded on the lead screw 43, so that the entire downward pressing unit 44 moves vertically downward along the sliding support column 21 at the four corners of the pressing frame 2;
[0032] When the downward pressing unit 44 descends to the set position, the downward pressing contact head 444 located below the displacement sensor 443 contacts the gear, at this time, the displacement sensor 443 begins to continuously measure and feedback the moving distance of the downward pressing unit 44, ensuring that the gear can be accurately embedded in the motor shaft 5 according to the predetermined depth, during the entire operation, the system adjusts the pressing force and the pressing depth according to the data provided by the pressure sensor 35 and the displacement sensor 443, ensuring the accuracy of the gear pressing, when the gear is successfully pressed in, the rotating downward pressing motor 41 is reversed, so that the downward pressing unit 44 rises and resets, at the same time, the motor positioning assembly 3 releases the motor body 6, completing a complete gear pressing process, then the operator takes out the completed motor assembly and prepares for the next operation.
[0033] The above is only the most optimal solution embodiment of the present application, and is not used to limit the present application, various modifications or replacements of the present application made by those skilled in the art without departing from the essence and protection scope of the present application should be within the protection scope of the present application.
Claims
1. A servo press with pressure monitoring, comprising a table (1), characterized in that: The machine (1) is provided with a pressure frame (2), the bottom end of the pressure frame (2) is provided with a motor positioning assembly (3), the top end of the pressure frame (2) is provided with a gear pressing assembly (4), the motor positioning assembly (3) comprises a motor positioning table (31), a double-head air cylinder (32) arranged on the motor positioning table (31), and motor positioning units (33) symmetrically arranged on the output ends of the double-head air cylinder (32), the motor positioning unit (33) comprises a positioning clamp (331), the output end of the positioning clamp (331) is provided with a motor body avoiding groove (3311), two thin piece extension blocks (3312) located on the upper part of the motor body avoiding groove (3311), and two thick piece extension blocks (3313) located on the lower part of the motor body avoiding groove (3311), V-shaped clamping grooves (3314) are arranged on the thin piece extension blocks (3312) and the thick piece extension blocks (3313), the V-shaped clamping grooves (3314) of the two thin piece extension blocks (3312) jointly clamp the outer shaft section (51) of the motor shaft (5), and the V-shaped clamping grooves (3314) of the two thick piece extension blocks (3313) jointly clamp the inner shaft section (52) of the motor shaft (5) located in the motor body (6).
2. The servo press with pressure monitoring according to claim 1, characterized in that: The motor positioning unit (33) further comprises a sliding block (332) and a sliding rail (333) located below the sliding block (332), the sliding block (332) is arranged at the lower end of the positioning clamp (331), and the sliding block (332) is slidingly fitted on the sliding rail (333), and the motor body (6) is placed between the two sliding rails (333).
3. The servo press with pressure monitoring according to claim 1, characterized in that: The motor positioning assembly (3) further comprises a sensor mounting table (34) and a pressure sensor (35) arranged on the sensor mounting table (34), the top of the pressure sensor (35) is in contact with the motor positioning table (31), and a plurality of buffer pins (36) are connected between the two sides of the sensor mounting table (34) and the motor positioning table (31).
4. The servo press with pressure monitoring according to claim 1, characterized in that: The gear pressing assembly (4) comprises a rotary pressing motor (41), a shaft coupling (42), a lead screw (43), and a pressing unit (44), the rotary pressing motor (41) is arranged on the top of the pressure frame (2), the lead screw (43) is connected to the output end of the rotary pressing motor (41) through the shaft coupling (42), the pressing unit (44) is slidingly fitted on the sliding support columns (21) at the four corners of the pressure frame (2), and the pressing unit (44) is threadedly fitted on the lead screw (43).
5. A servo press with pressure monitoring according to claim 4, characterized in that: The lower pressing unit (44) comprises an internally threaded sleeve (441) threadedly fitted on the lead screw (43), a sliding plate (442) with four corners slidingly fitted on four sliding support columns (21) of the four corners of the pressing frame (2), a displacement sensor (443) arranged at the lower end of the sliding plate (442), and a lower pressing contact head (444) arranged at the lower end of the displacement sensor (443) for contacting the gear and pressing it into the motor shaft (5), and the lower pressing contact head (444) is electrically connected with the displacement sensor (443).