A CNC left and right processing fixture
By designing a CNC left and right processing fixture, using components such as clamping tables, placement racks and rotating rods, the problem of large-scale preparation stage time accounts for a large proportion of the preparation stage during processing of small products is solved, and efficient processing and reducing the number of replacements is achieved.
Patent Information
- Application Number
- CN202421449836.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-21
AI Technical Summary
When performing CNC processing, especially for small products, the preparation stage takes up a large proportion of time, resulting in low processing efficiency.
A CNC left and right processing fixture is designed, using components such as clamping tables, placement racks, cylinders, tightening clamps, fixing clamps, rotating rods and sliding clamps. Through the coordination of the rotating rods and threads, efficient clamping and processing of product originals can be achieved.
Through this device, the processing efficiency of small products can be improved while reducing the number of replacement parts, and the processing time and preparation time can be further balanced.
Smart Images
Figure CN222740902U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of CNC processing equipment, and in particular to a CNC left-right processing fixture. Background Art
[0002] Traditional mechanical processing is done by manually operating ordinary machine tools. During processing, the metal is cut by hand-cranked mechanical tools, and the accuracy of the product is measured by eyes with tools such as calipers. Modern industry has long used computer digitally controlled machine tools for operations. CNC machine tools can automatically process any product and component directly according to the programs pre-programmed by technicians. This is what we call "CNC machining". CNC machining is widely used in all fields of mechanical processing. It is the development trend of mold processing and an important and necessary technical means.
[0003] When performing CNC machining, it is usually necessary to use fixtures to position and fix the product in the preparation stage before subsequent processing can be carried out. However, some products are small in size and the processing method is simple, so the processing time of a single product is short, and it is necessary to frequently change products and start the machine tool, so that the preparation stage time accounts for a large proportion and the processing efficiency is low. Utility Model Content
[0004] In order to better balance the processing time and preparation time and improve the processing efficiency of small products, the present application provides a CNC left-right processing fixture.
[0005] The CNC left-right processing fixture provided in this application adopts the following technical solution:
[0006] A CNC left-right processing fixture comprises a clamping table and a placing frame, wherein a placing groove is provided on the top of the clamping table, a cylinder is fixed in the placing groove, a clamping block is fixed on the output end of the cylinder, and the placing frame can be clamped between the clamping block and the clamping table; a fixed clamping plate is fixed on the placing frame, support blocks are fixed at both ends of the placing frame, a rotating rod is rotatably arranged between the support blocks, the rotating rod passes through the fixed clamping plate and is gap-matched with the fixed clamping plate, and the fixed clamping plate is located in the center of the rotating rod; a group of inner sliding clamping plates are slidably arranged on the side wall of the placing frame, and the inner sliding clamping plates are located on both sides of the fixed clamping plates; a group of first threads with equal pitches and opposite rotation directions are symmetrically arranged on the rotating rod, wherein one of the first threads is meshed with one of the inner sliding clamping plate threads, and the other first thread is meshed with the other inner sliding clamping plate threads.
[0007] By adopting the above technical scheme, the product original is placed between the fixed clamp and the inner sliding clamp, and the rotating rod is turned, the first thread and the inner sliding clamp are meshed with each other, and the inner sliding clamp is driven to approach the fixed clamp, and the product original is clamped and fixed between the fixed clamp and the inner sliding clamp, and then the placement rack is placed between the clamping table and the clamping block, and the cylinder is driven to retract the output end, and the placement rack is firmly clamped between the clamping block and the clamping table to process the product original; while processing, the worker assembles other product originals and placement racks, and after the product on the clamping table is processed, the worker removes the processed product and placement rack, and places the placement rack for the newly assembled product original, which better balances the processing time and preparation time and improves the processing efficiency of small products; because the inner sliding clamp is set on both sides of the fixed clamp, two product originals can be clamped at a time, reducing the number of replacements and improving processing efficiency.
[0008] Preferably, the placement groove is opened in the center of the top of the clamping platform, the center of the clamping block is connected to the output end of the cylinder, and the placement rack is clamped one on each side of the clamping platform in the width direction.
[0009] By adopting the above technical solution, the clamping block can clamp two placement racks at the same time, so that in one processing process of the machine tool, the product originals on the two placement racks can be processed, which reduces the number of part changes by several times and improves the processing efficiency; in addition, in the process of clamping the placement rack, the pressure balance on both sides of the cylinder output end can also be improved, thereby increasing the service life of the cylinder.
[0010] Preferably, a group of outer sliding clamps are symmetrically arranged on the side wall of the placement rack, and the outer sliding clamps are arranged on the side of the inner sliding clamps away from the fixed clamps. The outer sliding clamps, the inner sliding clamps and the fixed clamps are equidistantly arranged, and a group of second threads with equal pitches and opposite rotation directions are symmetrically arranged on the side wall of the rotating rod, one of the second threads is engaged with one of the outer sliding clamp threads, and the other second thread is engaged with the other outer sliding clamp thread, and the pitch of the second thread is twice the pitch of the first thread.
[0011] By adopting the above technical solution, when the rotating rod is turned, the second thread and the outer sliding clamp are engaged with each other, and the outer sliding clamp is driven to approach the inner sliding clamp, and its sliding rate is twice the sliding rate of the inner sliding clamp, so as to ensure that at any time, the outer sliding clamp, the inner sliding clamp and the fixed clamp are equidistant. Therefore, when the fixed clamp and the inner sliding clamp clamp the original product, the outer sliding clamp and the inner sliding clamp can also clamp the original product, further reducing the number of parts replacement and improving processing efficiency, so as to better match the processing time and preparation time.
[0012] Preferably, a smooth section is provided on the rotating rod, the fixed clamp is located in the center of the smooth section, the total length of the smooth section is twice the total length of the first thread, and the total length of the second thread is twice the total length of the first thread.
[0013] By adopting the above technical solution, when the outer sliding clamp and the second thread are engaged to the outermost limit position, the inner sliding clamp and the first thread are also engaged to the outermost limit position; when the outer sliding clamp and the second thread are engaged to the innermost limit position, the inner sliding clamp and the first thread are also engaged to the limit position close to the smooth section; on the one hand, the effective utilization rate of the length of the rotating rod is guaranteed, and on the other hand, the hindering effects of the two limit positions on the continued twisting of the rotating rod are superimposed on each other, so as to better hinder the rotating rod from continuing to rotate.
[0014] Preferably, both side surfaces of the fixed splint, both side surfaces of the inner sliding splint and the inner surface of the outer sliding splint are vertically and fixedly provided with limit baffles, and the limit baffles are arranged parallel to the side walls of the placement rack.
[0015] By adopting the above technical solution, on the one hand, the product original is prevented from contacting the first thread or the second thread, thereby protecting the first thread and the second thread. On the other hand, when clamping the product original, the inner side wall of the product original is made to fit with the surface of the limit baffle, which is helpful to position the product original.
[0016] Preferably, both side surfaces of the fixed clamping plate, both side surfaces of the inner sliding clamping plate and the inner surface of the outer sliding clamping plate are vertically and fixedly provided with limiting support plates, and the limiting support plates and the limiting baffles are perpendicular to each other.
[0017] By adopting the above technical solution, when assembling the original product, the original product can be placed on the limiting pallet, which supports the bottom wall of the original product. Then, both hands can be freed and the rotating rod can be turned. At the same time, before it is fully clamped, it is ensured that the original product is in contact with the surface of the limiting pallet and the limiting baffle at the same time to ensure reliable positioning of the original product.
[0018] Preferably, a positioning block is fixed at the bottom of the placement rack, and a positioning groove which is adapted to the positioning block is formed at the top of the clamping platform, and the positioning block can be inserted into the positioning groove and abut against the positioning groove.
[0019] By adopting the above technical solution, when the placement rack is clamped between the fixed clamping plate and the inner sliding clamping plate, it is ensured that there is a tactile feeling of the positioning block being inserted into the positioning groove, so as to ensure the positioning effect of the placement rack on the clamping table.
[0020] Preferably, inclined guide surfaces are provided on both side edges of the positioning block.
[0021] By adopting the above technical solution, when aligning the positioning block and the positioning groove, the guide surface helps to guide the positioning block to be inserted into the positioning groove, thereby improving the convenience of positioning the placement rack.
[0022] In summary, the present application includes at least one of the following beneficial technical effects:
[0023] 1. By setting the clamping table, the placement rack, the placement groove, the cylinder, the clamping block, the fixed clamping plate, the support block, the rotating rod, the inner sliding clamping plate, and the first thread, the processing time and the preparation time are better balanced, the processing efficiency of small products is improved, and the number of parts changes is reduced, thereby further improving the processing efficiency;
[0024] 2. By setting the outer sliding clamp, the second thread and the smooth section, the number of parts replacement is further reduced, the processing efficiency is improved, and the effective utilization rate of the rotating rod length is ensured;
[0025] 3. By setting the limit baffle and the limit support plate, the product original is supported before it is completely clamped, which helps to free both hands to twist the rotating rod and facilitates to ensure that the product original is reliably positioned on the placement rack. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a structural schematic diagram of a CNC left-right processing fixture provided in an embodiment of the present application.
[0027] Figure 2 It is a schematic diagram of the structure of the placement rack provided in the embodiment of the present application.
[0028] Explanation of the reference numerals: 1. clamping platform; 11. mounting groove; 12. cylinder; 121. clamping block; 13. positioning groove; 2. placement rack; 21. fixed clamping plate; 22. support block; 23. rotating rod; 231. smooth section; 232. first thread; 233. second thread; 24. inner sliding clamping plate; 25. outer sliding clamping plate; 26. limit baffle; 27. limit support plate; 28. positioning block; 281. guide surface. DETAILED DESCRIPTION
[0029] The following is combined with Figure 1-2 This application is described in further detail.
[0030] The present application embodiment discloses a CNC left-right processing jig. Figure 1 and Figure 2, which includes a clamping table 1 and a placement rack 2. A placement groove 11 is opened at the central position of the top of the clamping table 1, and a plurality of cylinders 12 are fixedly installed in the placement groove 11. The output end of the cylinder 12 is connected to a clamping block 121, and the center of the clamping block 121 is fixed to the output end of the cylinder 12. There are a plurality of placement racks 2, which can be clamped between the clamping block 121 and the clamping table 1, and one placement rack 2 can be clamped on each side of the width direction of the clamping table 1 at the same time. While the lathe is processing the product, the original product is assembled and fixed on the idle placement rack 2. After the product on the clamping table 1 is processed, the worker removes the processed product and the placement rack 2, and clamps the placement rack 2 of the newly assembled product original on the clamping table 1, thereby better balancing the processing time and preparation time, and improving the processing efficiency of small products.
[0031] In order to reduce the number of parts changes and improve processing efficiency, refer to Figure 2 , a fixed splint 21 is fixedly installed on the placement rack 2. Support blocks 22 are also fixed at both ends of the placement rack 2, and a rotating rod 23 rotates together between the two support blocks 22. A smooth section 231 is arranged in the center of the rotating rod 23, and the smooth section 231 passes through the fixed splint 21 and is clearance-matched with the fixed splint 21, and the fixed splint 21 is located in the center of the smooth section 231. A group of inner sliding splints 24 and a group of outer sliding splints 25 are slidably installed on the side wall of the placement rack 2. The inner sliding splints 24 are respectively located on both sides of the fixed splint 21, and the outer sliding splint 25 is located on the side of the inner sliding splint 24 away from the fixed splint 21. The outer sliding splint 25, the inner sliding splint 24, and the fixed splint 21 are arranged equidistantly. A product original is clamped between the outer sliding clamping plate 25 and the inner sliding clamping plate 24 and between the fixed clamping plate 21 and the inner sliding clamping plate 24, so that a single placement rack 2 can clamp up to four product originals at the same time.
[0032] Reference Figure 2A set of first threads 232 with equal pitch and opposite rotation direction are symmetrically processed on the rotating rod 23 outside the two ends of the smooth section 231. A second thread 233 is processed on the rotating rod 23 outside one end of each first thread 232 away from the smooth section 231. The two second threads 233 have opposite rotation directions and equal pitches. The length of the smooth section 231 and the second thread 233 are both twice the length of the first thread 232. One of the first threads 232 is threadedly engaged with one of the inner sliding clamps 24, and the other first thread 232 is threadedly engaged with the other inner sliding clamp 24. One of the second threads 233 is threadedly engaged with one of the outer sliding clamps 25, and the other second thread 233 is threadedly engaged with the other outer sliding clamp 25. By twisting the rotating rod 23 to rotate, the first thread 232 is engaged with the thread of the inner sliding clamp 24 and pushes the inner sliding clamp 24 to approach the fixed clamp 21. At the same time, the second thread 233 is engaged with the thread of the outer sliding clamp 25 and pushes the outer sliding clamp 25 to approach the inner sliding clamp 24. In this process, the outer sliding clamp 25, the inner sliding clamp 24 and the fixed clamp 21 are always kept equidistant.
[0033] In order to ensure reliable positioning of the original product during assembly, refer to Figure 2 The two side surfaces of the fixed clamping plate 21, the two side surfaces of the inner sliding clamping plate 24, and the inner surface of the outer sliding clamping plate 25 are all vertically and fixedly provided with a limit baffle 26 and a limit support plate 27. The limit baffle 26 is arranged parallel to the side wall of the placement rack 2, and is used to abut against the inner side wall of the product original. The limit support plate 27 is arranged perpendicular to the limit baffle 26, and is used to abut against the bottom wall of the product original. Before fully clamping, ensure that the product original is in contact with the surfaces of the limit support plate 27 and the limit baffle 26 at the same time to ensure reliable positioning of the product original.
[0034] In order to ensure the reliable positioning of the rack 2 on the clamping table 1, refer to Figure 1 and Figure 2 A positioning block 28 is fixed at the bottom of the placement rack 2, and a positioning groove 13 that matches the positioning block 28 is provided at the top of the clamping table 1. The positioning block 28 can be inserted into the positioning groove 13 and abut against the positioning groove 13 to ensure that the placement rack 2 is reliably positioned on the clamping table 1. Inclined guide surfaces 281 are provided on both sides of the positioning block 28, and the guide surfaces 281 are used to guide the positioning groove 13 into the inner positioning groove 13.
[0035] The implementation principle of a CNC left-right processing fixture in the embodiment of the present application is as follows: first place the original product between the fixed clamping plate 21 and the inner sliding clamping plate 24, or place the original product between the outer sliding clamping plate 25 and the inner sliding clamping plate 24. Twist the rotating rod 23, the inner sliding clamping plate 24 approaches the fixed clamping plate 21, and the outer sliding clamping plate 25 approaches the inner sliding clamping plate 24, and the original product is clamped and fixed. Place the placement rack 2 between the clamping table 1 and the clamping block 121, drive the cylinder 12 to retract the output end, and the placement rack 2 is firmly clamped between the clamping block 121 and the clamping table 1, so as to facilitate the processing of the original product.
[0036] While processing, workers assemble other product components and placement racks 2. After the product on the clamping table 1 is processed, workers remove the processed product and placement rack 2 and place the newly assembled product components on the placement rack 2. The placement rack 2 can hold up to four product components at a time, and the clamping table 1 can fix two placement racks 2 at the same time, greatly reducing the number of component changes and improving processing efficiency. This better balances the processing time and preparation time, and improves the processing efficiency of small products.
[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A CNC left-right processing jig, characterized by: The invention comprises a clamping platform (1) and a placing frame (2); the clamping platform (1) is provided with a placing groove (11) on the top; a cylinder (12) is fixed in the placing groove (11); a clamping block (121) is fixed at the output end of the cylinder (12); the placing frame (2) can be clamped between the clamping block (121) and the clamping platform (1); a fixed clamping plate (21) is fixed on the placing frame (2); support blocks (22) are fixed at both ends of the placing frame (2); a rotating rod (23) is rotatably arranged between the support blocks (22); the rotating rod (23) passes through the fixed clamping plate (21) and the placing frame (2); 21) and is clearance-matched with the fixed clamping plate (21), and the fixed clamping plate (21) is located in the center of the rotating rod (23); a group of inner sliding clamping plates (24) are slidingly arranged on the side wall of the placement rack (2), and the inner sliding clamping plates (24) are located on both sides of the fixed clamping plate (21); a group of first threads (232) with equal pitch and opposite rotation direction are symmetrically arranged on the rotating rod (23), wherein one of the first threads (232) is threadedly engaged with one of the inner sliding clamping plates (24), and the other first thread (232) is threadedly engaged with the other inner sliding clamping plate (24).
2. A CNC left-right processing jig according to claim 1, characterized in that: The placement groove (11) is opened in the center of the top of the clamping platform (1), the center of the clamping block (121) is connected to the output end of the cylinder (12), and one placement rack (2) is clamped on each side of the clamping platform (1) in the width direction.
3. A CNC left-right processing jig according to claim 1, characterized in that: A group of outer sliding clamps (25) are symmetrically arranged on the side wall of the placement rack (2), and the outer sliding clamps (25) are arranged on the side of the inner sliding clamps (24) away from the fixed clamps (21). The outer sliding clamps (25), the inner sliding clamps (24) and the fixed clamps (21) are arranged equidistantly. A group of second threads (233) with equal pitches and opposite rotation directions are symmetrically arranged on the side wall of the rotating rod (23), wherein one of the second threads (233) is threadedly engaged with one of the outer sliding clamps (25), and the other second thread (233) is threadedly engaged with the other outer sliding clamp (25), and the pitch of the second thread (233) is twice the pitch of the first thread (232).
4. A CNC left-right processing jig according to claim 3, characterized in that: The rotating rod (23) is provided with a smooth section (231), the fixed clamping plate (21) is located in the center of the smooth section (231), the total length of the smooth section (231) is twice the total length of the first thread (232), and the total length of the second thread (233) is twice the total length of the first thread (232).
5. A CNC left-right processing jig according to claim 4, characterized in that: The two side surfaces of the fixed clamping plate (21), the two side surfaces of the inner sliding clamping plate (24) and the inner surface of the outer sliding clamping plate (25) are all vertically and fixedly provided with limit baffles (26), and the limit baffles (26) are arranged parallel to the side walls of the placement rack (2).
6. A CNC left-right processing jig according to claim 5, characterized in that: The two side surfaces of the fixed clamping plate (21), the two side surfaces of the inner sliding clamping plate (24) and the inner side surface of the outer sliding clamping plate (25) are all vertically and fixedly provided with a limit support plate (27), and the limit support plate (27) and the limit baffle (26) are perpendicular to each other.
7. The CNC left-right processing jig according to claim 1, characterized in that: A positioning block (28) is fixed at the bottom of the placement rack (2), and a positioning groove (13) adapted to the positioning block (28) is provided at the top of the clamping platform (1). The positioning block (28) can be inserted into the positioning groove (13) and abut against the positioning groove (13).
8. The CNC left-right processing jig according to claim 7, characterized in that: Inclined guide surfaces (281) are provided on both sides of the positioning block (28).