High-precision end-tooth index plate of numerical control rotary table
By designing mounting mechanisms such as positioning blocks and turntables on the end tooth indexing plate, the problems of easy damage to the teeth and inconvenience in disassembly are solved, achieving high-precision machining and preventing contamination of transmission components, thus extending the equipment's lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO LONGTAI ZEYU PRECISION MASCH CO LTD
- Filing Date
- 2025-09-08
- Publication Date
- 2026-08-04
AI Technical Summary
The existing end-tooth indexing plate is prone to tooth breakage and wear when rotating at high speed. In addition, the teeth and the plate are an integrated structure, which is not convenient to disassemble and replace, thus affecting the machining accuracy.
The installation mechanism consists of positioning blocks, positioning grooves, inner frames, guide columns, and guide blocks. Through the cooperation of the turntable and screw barrel, the installation ring can be fixed and disassembled, facilitating the replacement of the teeth. The round hole is sealed with a sealing ring to prevent contamination of the screw barrel and screw rod.
It enables convenient disassembly and replacement of the teeth, improves processing accuracy, avoids contamination of transmission components, and extends the service life of the equipment.
Smart Images
Figure CN224587631U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of end-tooth indexing plate technology, specifically a high-precision end-tooth indexing plate for CNC rotary tables. Background Technology
[0002] The end-tooth indexing plate, also known as the rat tooth plate or end-face tooth plate, is the most core and critical component of mechanical indexing equipment. It ensures the high-precision indexing and orderly operation of CNC machinery and other equipment.
[0003] In existing end-tooth indexing plates, the moving tooth plate needs to rotate at high speed with the CNC rotary table. When locking is required after indexing, the high-speed rotating table carrying the moving tooth plate has a large inertia. The moment the moving tooth plate meshes with the fixed tooth plate, a rigid impact is easily generated. The tooth meshing surface directly bears the instantaneous impact force. Long-term use can easily lead to tooth breakage, tooth surface wear, or tooth tip deformation. Especially for high-precision helical tooth plates, even minor tooth damage can directly amplify the indexing error and affect the machining accuracy of the parts. In addition, the teeth of existing end-tooth indexing plates are mostly processed by integral machining technology. The teeth and the tooth plate body are integrated structures, which makes it inconvenient to disassemble and replace the teeth. Utility Model Content
[0004] In order to overcome the shortcomings of the prior art, this utility model provides a high-precision end-tooth indexing plate for CNC rotary tables, which effectively solves the problem of the inconvenience of disassembling and replacing the teeth.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-precision end-tooth indexing plate for a CNC rotary table, comprising a toothed plate, a mounting ring placed on the top of the toothed plate, multiple end teeth fixedly connected at equal angles to the top of the mounting ring, and a mounting mechanism provided between the mounting ring and the toothed plate; The mounting mechanism includes two positioning blocks symmetrically fixed to the bottom of the mounting ring. The top of the gear plate has two symmetrical positioning grooves, and the bottom of the gear plate has two symmetrical circular holes. The two positioning grooves are connected to the two circular holes respectively. The two positioning blocks pass through the two positioning grooves respectively, and the bottom of the two positioning blocks extends into the two circular holes respectively. An inner frame is fixedly connected inside the circular hole. The inner frame is fitted onto the outside of the positioning block. A guide post is fixedly connected to the outside of the inner frame. A guide block is movably fitted onto the outside of the guide post. A plug rod is fixedly connected to the bottom of the guide block. A plug hole is provided on the outside of the positioning block, and the plug rod is inserted into the plug hole.
[0006] Preferably, the outer side of the guide post is provided with a sliding groove, and the inner side of the guide block is fixedly connected with a slider, which is slidably connected to the sliding groove.
[0007] Preferably, an inner block is fixedly connected inside the circular hole, and the end of the guide post away from the inner frame is fixedly connected to the inner block. A movable block is provided at the bottom of the inner block, and a movable rod is rotatably connected to the outside of the movable block. The top end of the movable rod is rotatably connected to the bottom of the guide block. Limiting grooves are provided on both sides of the inner block, and limiting blocks are slidably connected in both limiting grooves. Both limiting blocks are fixed to the top of the movable block.
[0008] Preferably, a screw is fixedly connected to the bottom of the inner block, the movable block is sleeved on the outside of the screw and does not contact the screw, and a screw cylinder is threaded onto the outside of the screw, with the screw cylinder located at the bottom of the movable block.
[0009] Preferably, a turntable is fixedly connected to the bottom end of the screw cylinder. The turntable is located inside the circular hole, and an auxiliary groove is provided at the bottom of the turntable. Two auxiliary handles are symmetrically fixedly connected in the auxiliary groove.
[0010] Preferably, an inner ring is fixedly connected inside the circular hole, a sealing ring is fixedly connected to the bottom of the inner ring, and the top of the turntable is in contact with the sealing ring.
[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. The positioning ring is easily placed by the cooperation between the positioning block and the positioning groove. The mounting ring can be fixed by the cooperation between the turntable, screw, screw, movable block, limit groove, limit block, movable rod, guide block, guide post, insertion rod and insertion hole. Conversely, the mounting ring can be disassembled, which makes it easy to disassemble and replace the end teeth. 2. The cooperation between the turntable, the sealing ring, and the inner ring facilitates the sealing of the round hole, thereby preventing the screw barrel and screw from being exposed to the outside and contaminating them, which would affect normal transmission. Attached Figure Description
[0012] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.
[0013] In the attached diagram: Figure 1 This is a schematic diagram of the high-precision end-tooth indexing plate structure of the CNC rotary table of this utility model; Figure 2 This is a schematic diagram of the toothed disc structure of this utility model; Figure 3 This is a schematic diagram of the installation mechanism structure of this utility model; Figure 4 This is a schematic diagram of the movable block structure of this utility model; Figure 5 This is a schematic diagram of the disassembled structure of the inner block and screw cylinder of this utility model; Figure 6 This is a schematic diagram of the positioning block structure of this utility model; Figure 7 This is a schematic diagram of the exploded structure of the turntable of this utility model.
[0014] In the diagram: 1. Gear plate; 2. Mounting mechanism; 201. Positioning block; 202. Turntable; 203. Movable block; 204. Inner block; 205. Limiting groove; 206. Limiting block; 207. Slide groove; 208. Slider; 209. Guide block; 2010. Inner frame; 2011. Insert rod; 2012. Movable rod; 2013. Guide post; 2014. Screw barrel; 2015. Screw; 2016. Insertion hole; 2017. Sealing ring; 2018. Inner ring; 2019. Auxiliary handle; 2020. Auxiliary groove; 3. End tooth; 4. Mounting ring; 5. Positioning groove; 6. Round hole. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0016] Example 1, by Figure 1 The present invention relates to a high-precision end-tooth indexing plate for a CNC rotary table, comprising a toothed plate 1, a mounting ring 4 placed on the top of the toothed plate 1, a plurality of end teeth 3 fixedly connected at equal angles to the top of the mounting ring 4, and a mounting mechanism 2 provided between the mounting ring 4 and the toothed plate 1.
[0017] Specifically, by Figure 2-7The mounting mechanism 2 includes two positioning blocks 201 symmetrically fixed to the bottom of the mounting ring 4. The top of the gear disk 1 has two symmetrically arranged positioning grooves 5, and the bottom of the gear disk 1 has two symmetrically arranged circular holes 6. The two positioning grooves 5 communicate with the two circular holes 6 respectively. The two positioning blocks 201 pass through the two positioning grooves 5 respectively, and the bottoms of the two positioning blocks 201 extend into the two circular holes 6 respectively. An inner frame 2010 is fixedly connected inside the circular holes 6. The inner frame 2010 is fitted onto the outside of the positioning blocks 201. A guide post 2013 is fixedly connected to the outside of the inner frame 2010, and a guide block is movably fitted onto the outside of the guide post 2013. 209. A rod 2011 is fixedly connected to the bottom of the guide block 209. A hole 2016 is provided on the outer side of the positioning block 201, into which the rod 2011 is inserted. A groove 207 is provided on the outer side of the guide post 2013. A slider 208 is fixedly connected to the inner side of the guide block 209. The slider 208 is slidably connected to the groove 207. Through the cooperation between the groove 207 and the slider 208, the guide block 209 is limited, ensuring its stability when sliding along the guide post 2013. An inner block 204 is fixedly connected inside the round hole 6. The guide post 2013 is located away from the inner frame 2010. One end is fixedly connected to the inner block 204. The bottom of the inner block 204 has a movable block 203. A movable rod 2012 is rotatably connected to the outer side of the movable block 203. The top end of the movable rod 2012 is rotatably connected to the bottom of the guide block 209. Limiting grooves 205 are provided on both sides of the inner block 204. Limiting blocks 206 are slidably connected within each of the two limiting grooves 205. Both limiting blocks 206 are fixed to the top of the movable block 203. Through the cooperation between the limiting grooves 205 and the limiting blocks 206, the movable block 203 is limited, allowing it to move. The bottom of the inner block 204 is fixedly connected to... There is a screw 2015, and a movable block 203 is sleeved on the outside of the screw 2015 without contacting the screw 2015, so as to avoid wear on the screw 2015 when the movable block 203 moves. A screw cylinder 2014 is threaded on the outside of the screw 2015. The screw cylinder 2014 is located at the bottom of the movable block 203. A turntable 202 is fixedly connected to the bottom end of the screw cylinder 2014. The turntable 202 is located in the round hole 6. An auxiliary groove 2020 is provided at the bottom of the turntable 202. Two auxiliary handles 2019 are symmetrically fixedly connected in the auxiliary groove 2020. The turntable 202 can be rotated by the two auxiliary handles 2019. In use, first place the mounting ring 4 on top of the gear plate 1, so that the two positioning blocks 201 pass through the two positioning slots 5 respectively, and the bottoms of the two positioning blocks 201 extend into the two circular holes 6 respectively. Then, place the turntable 202 in the circular holes 6, so that the screw barrel 2014 is fitted on the outside of the screw 2015. Then rotate the turntable 202, causing the screw barrel 2014 to rotate on the outside of the screw 2015 and push the movable block 203, which in turn drives the guide block 209 through the movable rod 2012. Slide along the guide post 2013 while the insertion rod 2011 moves horizontally until it is inserted into the insertion hole 2016. Fix the positioning block 201 and fix the mounting ring 4 on the top of the gear plate 1 to complete the installation of the end tooth 3. When the rotating turntable 202 causes the screw barrel 2014 to disengage from the outside of the screw 2015, the movable block 203 can be moved downward to disengage the insertion rod 2011 from the insertion hole 2016. Remove the mounting ring 4 from the top of the gear plate 1 and finally complete the disassembly and replacement of the end tooth 3.
[0018] Specifically, by Figure 7 As shown, an inner ring 2018 is fixedly connected inside the round hole 6, and a sealing ring 2017 is fixedly connected to the bottom of the inner ring 2018. The top of the turntable 202 is in contact with the sealing ring 2017. In use, when the turntable 202 rotates into the round hole 6, the insertion rod 2011 is inserted into the insertion hole 2016. At this time, the turntable 202 and the sealing ring 2017 are in contact, thus sealing the round hole 6 and preventing the screw barrel 2014 and screw 2015 from being exposed to the outside and contaminated, which would affect the normal transmission.
Claims
1. A high-precision end-tooth indexing plate for a CNC rotary table, comprising a toothed plate (1), characterized in that: A mounting ring (4) is placed on the top of the toothed disc (1). Multiple end teeth (3) are fixedly connected at equal angles on the top of the mounting ring (4). A mounting mechanism (2) is provided between the mounting ring (4) and the toothed disc (1). The mounting mechanism (2) includes two positioning blocks (201) symmetrically fixed to the bottom of the mounting ring (4). The top of the gear plate (1) is provided with two positioning grooves (5) symmetrically, and the bottom of the gear plate (1) is provided with two round holes (6) symmetrically. The two positioning grooves (5) are respectively connected to the two round holes (6). The two positioning blocks (201) pass through the two positioning grooves (5) respectively, and the bottom of the two positioning blocks (201) extends into the two round holes (6) respectively. An inner frame (2010) is fixedly connected in the round hole (6). The inner frame (2010) is sleeved on the outside of the positioning block (201). A guide post (2013) is fixedly connected on the outside of the inner frame (2010). A guide block (209) is movably sleeved on the outside of the guide post (2013). A plug rod (2011) is fixedly connected to the bottom of the guide block (209). A plug hole (2016) is provided on the outside of the positioning block (201). The plug rod (2011) is inserted into the plug hole (2016).
2. The high-precision end-tooth indexing plate of a CNC rotary table according to claim 1, characterized in that: The guide post (2013) has a groove (207) on its outer side, and a slider (208) is fixedly connected to the inner side of the guide block (209). The slider (208) is slidably connected to the groove (207).
3. The high-precision end-tooth indexing plate of a CNC rotary table according to claim 1, characterized in that: An inner block (204) is fixedly connected inside the circular hole (6). One end of the guide post (2013) away from the inner frame (2010) is fixedly connected to the inner block (204). A movable block (203) is provided at the bottom of the inner block (204). A movable rod (2012) is rotatably connected to the outside of the movable block (203). The top end of the movable rod (2012) is rotatably connected to the bottom of the guide block (209). Limiting grooves (205) are provided on both sides of the inner block (204). Limiting blocks (206) are slidably connected in both limiting grooves (205). Both limiting blocks (206) are fixed to the top of the movable block (203).
4. A high-precision end-tooth indexing plate for a CNC rotary table according to claim 3, characterized in that: The bottom of the inner block (204) is fixedly connected to a screw (2015), and the movable block (203) is sleeved on the outside of the screw (2015) and does not contact the screw (2015). The screw (2015) is threadedly sleeved on the outside of the screw (2015), and the screw (2014) is located at the bottom of the movable block (203).
5. A high-precision end-tooth indexing plate for a CNC rotary table according to claim 4, characterized in that: The bottom end of the screw barrel (2014) is fixedly connected to a turntable (202), which is located in the round hole (6). The bottom of the turntable (202) is provided with an auxiliary groove (2020), and two auxiliary handles (2019) are symmetrically fixedly connected in the auxiliary groove (2020).
6. A high-precision end-tooth indexing plate for a CNC rotary table according to claim 1, characterized in that: An inner ring (2018) is fixedly connected inside the circular hole (6), and a sealing ring (2017) is fixedly connected to the bottom of the inner ring (2018). The top of the turntable (202) is in contact with the sealing ring (2017).