A numerical control rotary table grinding tooling
By designing positioning components and tooling assemblies, the problems of excessive coaxiality and low assembly efficiency of harmonic reducers in CNC rotary table grinding tooling were solved, enabling a fast and accurate assembly process and improving production efficiency and connection stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN JUNGONG TECH CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-31
AI Technical Summary
In existing CNC rotary table grinding fixtures, the assembly of harmonic reducers suffers from problems such as excessive coaxiality and low assembly efficiency. In particular, the traditional flange bolt direct locking type and split self-aligning structure are insufficient in terms of accuracy and efficiency.
The design employs a combination of positioning components and tooling assemblies. The positioning components provide radial fine-tuning freedom and axial positioning reference. Combined with the quick-locking mechanism of the tooling assemblies, the servo motor and the base are quickly and accurately aligned through sliding plug-in and compensation components, replacing the traditional method that relies on manual grinding and repeated adjustments.
It enables rapid and precise alignment between the servo motor and the base, improving assembly efficiency, reducing the risk of reducer wear due to coaxiality deviation, and enhancing connection rigidity and stability.
Smart Images
Figure CN224575394U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of CNC rotary table tooling, specifically to a grinding tooling for CNC rotary tables. Background Technology
[0002] In current CNC rotary table grinding fixtures, the assembly of harmonic reducers mostly adopts the following two structures: direct flange bolt locking type, which rigidly connects the servo motor flange to the rotary table base with ordinary high-strength bolts. This method relies on bolt preload to eliminate gaps, but during assembly, coaxiality errors are prone to occur due to part machining errors, leading to abnormal wear of the reducer; split self-aligning structure: an adjusting shim is added between the flange and the base, and the error is compensated by manually grinding the shim thickness. Although this can improve accuracy, it requires repeated disassembly and adjustment, reducing assembly efficiency, and the shim is prone to displacement under vibration conditions.
[0003] To eliminate errors, multiple trial installations and manual repairs are required, which is labor-intensive and relies heavily on the operator's experience, leading to production capacity bottlenecks. Utility Model Content
[0004] The purpose of this invention is to provide a grinding fixture for CNC rotary tables to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a grinding fixture for a CNC rotary table, comprising a base and a connecting flange, wherein a servo motor is coaxially connected to the output end of the connecting flange, the servo motor is fixed on the mounting surface of the base, a positioning element is slidably inserted between the base and the connecting flange, the end of the positioning element extends through the mating surface between the connecting flange and the base to a predetermined groove in the base, and a limit groove is provided on one side of the positioning element.
[0006] The base is provided with a tooling assembly for easy buffer compensation on one side. The tooling assembly includes a fixed seat and a limiting block. A compensation component is provided on one side of the end of the limiting block. The compensation component is used to compensate for the gap between the limiting block and the predetermined groove of the base.
[0007] Preferably, the two fixing seats are respectively fixed on both sides of the base, and the fixing seats are provided with storage slots, and a pull column is slidably inserted into the storage slot on the fixing seats.
[0008] Preferably, a retaining spring is sleeved on the traction column, and a limit block is provided at the end of the traction column.
[0009] Preferably, the limiting block has a "T" shaped block structure, and the ends match each other.
[0010] Preferably, the compensation component includes a pin, and a receiving groove is provided on one side of the end of the limiting block. The pin is located in the receiving groove and is fixedly connected to the limiting block.
[0011] Preferably, a compensation block is movably sleeved on the pin, and a torsion spring is sleeved on the pin. One end of the torsion spring is fixed on the pin, and the other end is fixed on the compensation block. The end of the compensation block abuts against a predetermined groove in the base.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. This utility model achieves rapid and precise alignment of the connecting flange relative to the base by combining the radial fine-tuning degree of freedom of the positioning component and the axial positioning reference with the quick locking mechanism of the tooling assembly. This replaces the complex and inefficient assembly process that relies on manual grinding of gaskets or repeated adjustment of bolt preload, greatly shortening the assembly time and improving production efficiency.
[0014] 2. This utility model effectively eliminates connection gaps by using the continuous radial preload provided by the tooling components, thereby enhancing the overall rigidity of the connection between the servo motor and the base. Compared with the bolted connection method that relies on preload to eliminate gaps, this structure can better maintain long-term stable coaxiality and significantly reduce the risk of abnormal wear of the reducer caused by coaxiality deviation. Attached Figure Description
[0015] Figure 1 This is a structural schematic diagram of one side of the base of this utility model.
[0016] Figure 2 This is a schematic diagram of the structure between the base and the connecting flange of this utility model.
[0017] Figure 3 This is a schematic diagram of the tooling assembly of this utility model.
[0018] Figure 4 This is a schematic diagram of the structure of the compensation component of this utility model.
[0019] In the diagram: 1. Base; 2. Positioning component; 21. Limiting groove; 3. Connecting flange; 4. Servo motor; 5. Fixing seat; 51. Pulling column; 52. Abutting spring; 53. Limiting block; 54. Receiving groove; 55. Pin; 56. Torsion spring; 57. Compensation block. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figures 1 to 4This utility model provides a technical solution: a CNC rotary table grinding fixture, including a base 1 and a connecting flange 3. The output end of the connecting flange 3 is coaxially connected to a servo motor 4. The servo motor 4 is fixed on the mounting surface of the base 1. A positioning element 2 is slidably inserted between the base 1 and the connecting flange 3. The end of the positioning element 2 extends through the mating surface between the connecting flange 3 and the base 1 into a predetermined groove in the base 1, replacing the traditional bolt hard connection, providing radial fine adjustment freedom, establishing an axial positioning reference, and restricting the axial movement of the connecting flange 3. A limit groove 21 is opened on one side of the positioning element 2, and a fixture component for easy buffer compensation is provided on one side of the base 1.
[0022] The tooling assembly includes a fixed base 5, with two fixed bases 5 respectively fixed on both sides of the base 1. The fixed base 5 has a storage groove, and a tension column 51 is slidably inserted into the storage groove on the fixed base 5. A retaining spring 52 is sleeved on the tension column 51 to provide continuous radial preload. A limit block 53 is fixedly connected to the end of the tension column 51. The limit block 53 has a "T" shaped block structure, and its end matches the limit groove 21. The limit groove 21 and the tooling assembly form a dynamic locking mechanism, allowing slight expansion and contraction under thermal deformation. The end of the limit block 53 matches the limit groove 21 for quick positioning and locking, replacing manual grinding of the shim. A compensation component is provided on one side of the end of the limit block 53.
[0023] The compensation component includes a pin 55, a receiving groove 54 is provided on one side of the end of the limiting block 53, the pin 55 is located in the receiving groove 54 and is fixedly connected to the limiting block 53, a compensation block 57 is movably sleeved on the pin 55, a torsion spring 56 is sleeved on the pin 55, one end of the torsion spring 56 is fixed on the pin 55 and the other end is fixed on the compensation block 57, the end of the compensation block 57 abuts against the predetermined groove of the base 1, and the compensation block 57 adaptively presses against the side wall of the predetermined groove.
[0024] Place the connecting flange 3 on the mounting surface of the base 1, and slide the positioning piece 2 into the predetermined groove of the base 1 along the insertion direction. At this time, the limiting groove 21 automatically aligns with the tooling assembly, replacing the traditional manual alignment step. The abutting spring 52 pushes the limiting block 53 into the limiting groove 21 to complete the initial radial positioning.
[0025] After locking the servo motor 4 and starting the equipment, the vibration causes the flange 3 to wobble slightly. The limit block 53 is squeezed by the lateral force and abuts against the spring 52 for buffering. The thermal deformation causes the positioning part 2 to elongate axially. The compensation block 57 rotates along the pin shaft 55 under the action of the torsion spring 56 and continues to stick to the side wall of the predetermined groove.
[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A grinding fixture for CNC rotary tables, comprising a base (1) and a connecting flange (3), characterized in that: The output end of the connecting flange (3) is coaxially connected to a servo motor (4). The servo motor (4) is fixed on the mounting surface of the base (1). A positioning member (2) is slidably inserted between the base (1) and the connecting flange (3). The end of the positioning member (2) extends through the mating surface between the connecting flange (3) and the base (1) into a predetermined groove in the base (1). A limiting groove (21) is opened on one side of the positioning member (2). The base (1) is provided with a tooling assembly for easy buffer compensation on one side. The tooling assembly includes a fixed seat (5) and a limiting block (53). A compensation component is provided on one side of the end of the limiting block (53). The compensation component is used to compensate for the gap between the limiting block (53) and the predetermined groove of the base (1).
2. The grinding fixture for a CNC rotary table according to claim 1, characterized in that: The two fixing seats (5) are respectively fixed on both sides of the base (1). The fixing seats (5) are provided with storage slots, and the fixing seats (5) are slidably inserted into the storage slots.
3. A grinding fixture for a CNC rotary table according to claim 2, characterized in that: A retaining spring (52) is sleeved on the traction column (51), and a limit block (53) is provided at the end of the traction column (51).
4. A grinding fixture for a CNC rotary table according to claim 3, characterized in that: The limiting block (53) has a "T" shaped block structure, and its ends match those of ((21)).
5. A grinding fixture for a CNC rotary table according to claim 1, characterized in that: The compensation component includes a pin (55), and a receiving groove (54) is provided on one side of the end of the limiting block (53). The pin (55) is located in the receiving groove (54) and is fixedly connected to the limiting block (53).
6. A grinding fixture for a CNC rotary table according to claim 5, characterized in that: A compensation block (57) is movably sleeved on the pin (55), and a torsion spring (56) is sleeved on the pin (55). One end of the torsion spring (56) is fixed on the pin (55), and the other end is fixed on the compensation block (57). The end of the compensation block (57) abuts against the predetermined groove of the base ((1)).