Clamping mechanism for annular workpiece machining

Abstract

The utility model relates to the technical field of gear machining, in particular to an annular workpiece machining clamping mechanism which comprises a plurality of clamping assemblies evenly arranged along the circumferential side of a milling machine rotary table at intervals, each clamping assembly comprises a mounting base and a clamping block, a containing groove is formed in each mounting base, and the clamping blocks are located in the containing grooves; a clamping area used for clamping the annular workpiece is formed between the clamping block and the side wall of the containing groove, and a synchronous driving assembly is arranged between the multiple mounting bases. Through cooperative use of the synchronous driving assembly and the multiple sets of clamping assemblies, synchronous clamping and fixing of the workpiece in the annular workpiece machining process are achieved, the use process is simple and convenient, and meanwhile the stability of the annular workpiece in the machining process is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of gear processing, and particularly relates to a clamping mechanism for machining an annular workpiece. Background Art

[0002] In the prior art, for the machining of annular workpieces, such as gear rings, a milling machine is usually required. When using a milling machine to drill or mill an annular workpiece, in order to facilitate machining, the annular workpiece is usually fixed in suspension on the turntable of the milling machine.

[0003] For the above-mentioned operation of fixing in suspension, the existing method is to evenly arrange several groups of clamping components at intervals on the circumferential side of the turntable of the milling machine. Each clamping component consists of a fixed seat and a clamping rod arranged on the fixed seat. The clamping rod is threadedly connected to the fixed seat, and a clamping space is formed between the end of the clamping rod and the fixed seat. During use, the annular workpiece is placed on several fixed seats, and then by sequentially screwing the clamping rods, several clamping rods are all abutted against the annular workpiece, thereby forming a clamping of the annular workpiece. Thus, with the cooperation of the fixed seat and the clamping rod, the annular workpiece is fixed in suspension on the turntable of the milling machine.

[0004] However, in actual use, when using the above-mentioned clamping method of several groups of clamping rods and fixed seats to clamp the annular workpiece, during operation, the staff needs to screw the clamping rods one by one, and the overall operation process is relatively cumbersome. Moreover, during the process of screwing the clamping rods, it is easy to have different clamping forces of the clamping rods at different positions on the annular workpiece, resulting in poor fixing stability of the annular workpiece during subsequent drilling or milling by the milling machine, and further affecting the machining quality of the annular workpiece. Utility Model Content

[0005] In order to solve the problems that in the existing machining process of annular workpieces, the operation process of fixing the annular workpiece in suspension is relatively cumbersome and the stability after fixing is difficult to guarantee, the present application provides a clamping mechanism for machining an annular workpiece.

[0006] A clamping mechanism for machining an annular workpiece provided by the present application adopts the following technical solutions:

[0007] A clamping mechanism for machining an annular workpiece includes several groups of clamping components evenly arranged at intervals along the circumferential side of the turntable of the milling machine. The clamping component includes a mounting seat arranged on the turntable of the milling machine and a clamping block slidably arranged on the mounting seat. A placement groove for placing the annular workpiece is formed on the mounting seat. The clamping block is located in the placement groove, and a clamping area for clamping the annular workpiece is formed between the clamping block and the side wall of the placement groove. A synchronous driving component is arranged between several mounting seats for controlling several clamping blocks to synchronously slide to abut against the side wall of the annular workpiece.

[0008] In the prior art, since the annular workpiece is fixed in suspension, mainly by the staff screwing the clamping rods one by one, so as to form a suspended clamping of the annular workpiece through the clamping rods and the fixed seat. In the process of screwing the clamping rods one by one, it is difficult to ensure that the clamping forces of all the clamping rods on the annular workpiece are consistent. Therefore, by adopting the above technical solution, during use, several clamping blocks can be driven synchronously by the synchronous driving assembly to abut against the side wall of the annular workpiece synchronously, so as to ensure the stability of the suspended fixation of the annular workpiece, and at the same time, the operation process is simpler and more convenient, which is more conducive to use.

[0009] Preferably, the synchronous driving assembly includes driving oil cylinders arranged in one-to-one correspondence with the clamping blocks, and oil supply branch pipes arranged in one-to-one correspondence with the mounting seats. The oil supply branch pipes are used to supply oil into the corresponding driving oil cylinders. Several of the oil supply branch pipes are all communicated with an external oil supply main pipe. The piston rod of the driving oil cylinder is fixedly connected with the clamping block.

[0010] By adopting the above technical solution, during use, several oil supply branch pipes simultaneously supply oil into several driving oil cylinders, so as to drive the piston rods of several driving oil cylinders to extend synchronously, thereby driving several clamping blocks to slide synchronously, so as to realize the synchronous clamping and fixation of different positions on the circumferential side of the annular workpiece, and at the same time, the clamping stability of the annular workpiece is also ensured.

[0011] Preferably, several groups of clamping blocks are arranged on one mounting seat, and several groups of the clamping blocks are evenly spaced along the circumferential edge of the milling machine turntable. Several groups of driving oil cylinders are arranged corresponding to the clamping blocks. An oil inlet pipe and an oil outlet pipe are arranged on the mounting seat. One end of the oil inlet pipe is communicated with the oil supply branch pipe, and the other end of the oil inlet pipe is communicated with the oil inlet ports of several driving oil cylinders arranged on the mounting seat. The oil outlet pipe is used to control the discharge of the oil in several driving oil cylinders arranged on the mounting seat.

[0012] By adopting the above technical solution, during use, by arranging several groups of clamping blocks on one mounting seat and through the coordinated use of the oil inlet pipe and the oil outlet pipe, on the premise of ensuring the synchronous sliding of several clamping blocks, the clamping stability of the annular workpiece is further improved.

[0013] Preferably, the clamping block includes two fixed layers and a buffer layer arranged between the two fixed layers.

[0014] By adopting the above technical solution, during use, by adding a buffer layer between the two fixed layers, a buffer amount is provided when clamping the annular workpiece subsequently, so as to reduce the possibility of damaging the annular workpiece during the clamping process.

[0015] Preferably, a fixing seat is further arranged between the mounting seat and the milling machine turntable. The fixing seat is detachably connected to the milling machine turntable. The mounting seat is slidably arranged on the fixing seat along the radial direction of the milling machine turntable. An adjusting component for adjusting the sliding position of the mounting seat is arranged on the fixing seat.

[0016] By adopting the above technical solution, during use, the sliding of the mounting seat is controlled by the adjusting component to change the position of the mounting seat, so as to clamp annular workpieces with different outer diameters, thereby improving the application range of the overall device.

[0017] Preferably, the adjusting component includes a lead screw rotatably arranged on the fixing seat, a sliding sleeve threadedly connected to the lead screw, and a hand wheel for driving the lead screw to rotate. The sliding sleeve is fixedly connected to the mounting seat.

[0018] By adopting the above technical solution, during use, the operator rotates the hand wheel to drive the lead screw to rotate. The rotation of the lead screw synchronously drives the sliding sleeve to slide, so as to realize the adjustment of the positions of the mounting seat and the clamping component.

[0019] Preferably, a counter-bolt is also threadedly connected to the mounting seat, and one end of the counter-bolt passes through the mounting seat and is in abutting fit with the fixing seat.

[0020] By adopting the above technical solution, during use, when the mounting seat slides to the designated position, the mounting seat can be positioned by the counter-bolt, thereby reducing the possibility of the mounting seat moving during the processing of the annular workpiece.

[0021] Preferably, reference scale lines are also arranged on the fixing seat.

[0022] By adopting the above technical solution, during use, by setting the scale lines, it helps the operator to adjust the mounting seat accurately, thereby ensuring the stability of clamping the annular workpiece and making it more convenient to use.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Through the combined use of several groups of clamping blocks, driving oil cylinders and oil supply branch pipes, the synchronous clamping of the annular workpiece is realized, thereby ensuring the stability of clamping and fixing the annular workpiece, and at the same time improving the operation convenience;

[0025] 2. The clamping block formed by combining two fixing layers and a buffer layer, on the premise of ensuring the stable clamping of the annular workpiece, increases the buffer protection during the clamping process of the annular workpiece through the buffer layer, thereby reducing the damage to the annular workpiece;

[0026] 3. By using the cooperation of the adjusting component, the mounting seat and the abutting bolt, and with the assistance of the reference scale line, it is convenient for the staff to adjust the position of the clamping component on the mounting seat, so as to stably clamp annular workpieces with different outer diameters, thereby improving the applicable range of the overall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is an axonometric schematic diagram mainly showing the overall structure in Embodiment 1 of the present application;

[0028] Figure 2 is an axonometric schematic diagram mainly showing the structure of the clamping component in Embodiment 1 of the present application;

[0029] Figure 3 is an axonometric schematic diagram mainly showing the structure of the clamping block in Embodiment 1 of the present application;

[0030] Figure 4 is an exploded view mainly showing the structure of the synchronous drive component in Embodiment 1 of the present application;

[0031] Figure 5 is an axonometric schematic diagram mainly showing the connection structure of the fixed seat in Embodiment 2 of the present application;

[0032] Figure 6 is an exploded view mainly showing the structure of the adjusting component in Embodiment 2 of the present application.

[0033] Reference numerals: 1, milling machine turntable; 2, clamping component; 21, mounting seat; 22, clamping block; 221, fixed layer; 222, buffer layer; 23, placement groove; 24, oil inlet pipe; 25, oil outlet pipe; 3, synchronous drive component; 31, drive oil cylinder; 32, oil supply branch pipe; 4, fixed seat; 5, adjusting component; 51, lead screw; 52, sliding sleeve; 53, hand wheel; 6, abutting bolt; 7, reference scale line. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The following Figure 1 - Figure 6 is a further detailed description of the present application with reference to the attached drawings.

[0035] Embodiment 1 of the present application discloses a clamping mechanism for machining annular workpieces.

[0036] Embodiment 1:

[0037] Refer to Figure 1 and Figure 2, A clamping mechanism for machining a ring-shaped workpiece, including a clamping assembly 2 provided on a milling machine turntable 1. There are several groups of clamping assemblies 2, and several groups of clamping assemblies 2 are evenly distributed at intervals along the circumferential side of the milling machine turntable 1. In this embodiment, the clamping assembly 2 is preferably provided in four groups. Each group of clamping assemblies 2 is composed of a mounting seat 21 and a clamping block 22. Among them, the mounting seat 21 can be fixedly connected to the milling machine turntable 1 by bolts. A placement groove 23 is formed on the right side wall of the mounting seat 21. The clamping block 22 is located in the placement groove 23, and a clamping area is formed between the clamping block 22 and the side wall of the placement groove 23.

[0038] Refer to Figure 2 and Figure 3 , A plurality of clamping blocks 22 are provided on the upper and lower end faces of the placement groove 23, and the clamping blocks 22 provided on the upper and lower end faces of the placement groove 23 are symmetrically distributed. The plurality of clamping blocks 22 are evenly distributed at intervals along the right arc edge of the mounting seat 21. In the embodiment of the present application, five clamping blocks 22 are provided on the upper and lower end faces of the placement groove 23; the clamping block 22 is composed of two fixing layers 221 and a buffer layer 222. The fixing layer 221 and the buffer layer 222 are adhesively fixed, and the buffer layer 222 is located between the fixing layers 221. In the embodiment of the present application, the fixing layer 221 is set as a rigid plastic layer, and the buffer layer 222 is preferably set as a flexible rubber layer.

[0039] Refer to Figure 1 and Figure 2 , During use, the ring-shaped workpiece is clamped and limited through the clamping area between the clamping block 22 and the inner wall of the placement groove 23, so as to realize the suspension fixation of the ring-shaped workpiece; when the fixing layer 221 in the clamping block 22 abuts against the side wall of the ring-shaped workpiece, the buffer layer 222 can provide a buffer force for the abutting position, thereby reducing the possibility of damage to the ring-shaped workpiece when the clamping block 22 clamps the ring-shaped workpiece.

[0040] Refer to Figure 2 and Figure 4 , A synchronous driving assembly 3 is also provided on the milling machine turntable 1. The synchronous driving assembly 3 is used to drive a plurality of clamping blocks 22 to synchronously slide to a position where they abut against the side wall of the ring-shaped workpiece. The synchronous driving assembly 3 is composed of a driving oil cylinder 31 and an oil supply branch pipe 32. Among them, the number of driving oil cylinders 31 is the same as the number of clamping blocks 22 and their installation positions correspond one by one. The number of oil supply branch pipes 32 is the same as the number of mounting seats 21 and their installation positions correspond one by one. In the present application, the driving oil cylinder 31 is located on the bottom end face of the placement groove 23, and the cylinder body of the driving oil cylinder 31 is fixed on the mounting seat 21. The piston rod of the driving oil cylinder 31 is fixedly connected to the clamping block 22. The oil supply branch pipe 32 is used to supply oil to the driving oil cylinder 31, and several oil supply branch pipes 32 are all communicated with an external oil supply main pipe.

[0041] Refer to Figure 2 and Figure 4, an oil outlet pipe 25 and an oil inlet pipe 24 are integrally formed on the mounting seat 21. A number of oil guiding channels are formed inside the mounting seat 21. The number of oil guiding channels, the oil outlet pipe 25 and the oil inlet pipe 24 are all communicated. The oil inlet pipe 24 is communicated with the oil supply branch pipe 32, and the oil outlet pipe 25 is communicated with the external oil outlet pipe 25. During use, when it is necessary to clamp the annular workpiece, only need to supply oil to a number of oil supply branch pipes 32 synchronously through the external oil supply main pipe, and then each oil supply branch pipe 32 introduces the oil from the oil inlet pipe 24 port on the corresponding mounting seat 21 into a number of driving cylinders 31 on the mounting seat 21, so as to drive the piston rods of the driving cylinders 31 to extend, thereby driving a number of clamping blocks 22 to rise synchronously, so as to lift the annular workpiece until it abuts against the clamping blocks 22 at the upper end of the mounting seat 21, and then the clamping and fixing of the annular workpiece can be realized.

[0042] Refer to Figure 2 and Figure 4 , when it is necessary to replace the annular workpiece, only need to drain the oil in the driving cylinder 31 along the oil outlet pipe 25 on the mounting seat 21, then the clamping block 22 can be loosened from clamping the annular workpiece, and then the annular workpiece can be replaced subsequently. Compared with the method of clamping the annular workpiece by the operator screwing the abutting rods one by one in the prior art, the use process is simpler and more convenient, and at the same time, it also ensures that the clamping force of the clamping components 2 at different positions on the annular workpiece is consistent, thereby reducing the possibility of damage to the annular workpiece during the clamping process.

[0043] The implementation principle of the embodiment of the present application is: during use, first distribute the mounting seats 21 at intervals on the milling machine turntable 1, then place the annular workpiece to be processed between the mounting seats 21, and by moving the mounting seat 21 or the annular workpiece, make the bottom wall of the annular workpiece fit and place on the bottom wall of the placement groove 23 on the mounting seat 21. After that, adjust the position of the mounting seat 21 and fix the mounting seat 21 on the milling machine turntable 1 with bolts, so as to ensure that a number of mounting seats 21 are evenly distributed at intervals on the circumference of the annular workpiece, thereby completing the installation of the annular workpiece and the clamping component 2. After the installation is completed, then connect the oil supply branch pipe 32 with the external oil supply main pipe, and the oil flows into different mounting seats 21 synchronously through the oil supply branch pipe 32, and flows into a number of driving cylinders 31 through the oil inlet pipe 24 and the internal oil guiding channels on the mounting seat 21, so as to drive the piston rods of a number of driving cylinders 31 to extend synchronously, so as to lift the annular workpiece by the synchronous sliding of a number of clamping blocks 22. When it abuts against the clamping blocks 22 at the top of the mounting seat 21, the clamping and fixing of the annular workpiece can be realized. The overall operation process is simple and convenient, and at the same time, it also ensures the clamping stability of the annular workpiece.

[0044] The difference between Embodiment 2 and Embodiment 1 is:

[0045] Refer to Figure 5 and Figure 6, the mounting base 21 and the milling machine turntable 1 are connected by a fixing base 4. That is, the fixing base 4 is fixedly connected to the milling machine turntable 1 by bolts. The mounting base 21 slides radially along the milling machine turntable 1 on the fixing base 4. An adjusting assembly 5 is provided on the fixing base 4. The adjusting assembly 5 is used to adjust the sliding position of the mounting base 21. The adjusting assembly 5 is composed of a lead screw 51, a sliding sleeve 52 and a handwheel 53. Among them, the lead screw 51 is rotatably connected to the fixing base 4, the sliding sleeve 52 is threadedly connected to the lead screw 51, and the sliding sleeve 52 is fixedly connected to the mounting base 21 by bolts. The handwheel 53 is coaxially fixed to one end of the lead screw 51.

[0046] Refer to Figure 5 and Figure 6 , during use, the lead screw 51 is driven to rotate by rotating the handwheel 53. The rotation of the lead screw 51 synchronously drives the sliding sleeve 52 to slide axially along the lead screw 51, thereby driving the mounting base 21 to slide, so as to realize the adjustment of the position of the mounting base 21, and thus adjust the position of the clamping assembly 2 on the mounting base 21, so that the overall device is applicable to the machining process of annular workpieces with different outer diameters.

[0047] Refer to Figure 5 and Figure 6 , in addition, in order to facilitate the staff to adjust the position of the mounting base 21, a reference scale line 7 is also provided on the fixing base 4. The reference scale line 7 is used to assist the staff to adjust the position of the mounting base 21 more accurately, so as to ensure the stability of clamping and fixing the annular workpiece; at the same time, in order to prevent the mounting base 21 from sliding during the machining process, a contact bolt 6 is also provided on the mounting base 21. The contact bolt 6 is threadedly connected to the mounting base 21, and the end of the contact bolt 6 passes through the mounting base 21 and is in contact and cooperation with the fixing base 4; during use, when the mounting base 21 slides to the designated position, the contact bolt 6 can be screwed to make the end of the contact bolt 6 abut against the fixing base 4, so as to realize the positioning of the mounting base 21.

[0048] The implementation principle of this embodiment is as follows: during use, first connect several groups of fixing bases 4 to the milling machine turntable 1 by bolts, then place the annular workpiece to be machined between the fixing bases 4, and then rotate the handwheel 53 to make the mounting base 21 slide towards the direction close to the annular workpiece until the side wall of the annular workpiece slides into the placement groove 23, and when the bottom wall of the annular workpiece fits and is placed on the bottom wall of the placement groove 23 on the mounting base 21, the oil supply branch pipe 32 can be conducted with the external oil supply main pipe, so as to drive the piston rods of several driving cylinders 31 to extend synchronously, thereby lifting the annular workpiece by the synchronous sliding of several clamping blocks 22. When it abuts against the clamping block 22 at the top of the mounting base 21, the clamping and fixing of the annular workpiece can be realized; for annular workpieces with different outer diameters, the staff only needs to rotate the handwheel 53 to adjust the position of the mounting base 21, so as to realize the purpose of clamping annular workpieces of different sizes, improving the practicability of the overall device.

[0049] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A clamping mechanism for machining a ring-shaped workpiece, characterized in that: It includes several groups of clamping components (2) evenly spaced along the circumferential side of the milling machine turntable (1). The clamping component (2) includes a mounting base (21) arranged on the milling machine turntable (1) and a clamping block (22) slidably arranged on the mounting base (21). A placement groove (23) for placing an annular workpiece is formed on the mounting base (21). The clamping block (22) is located in the placement groove (23), and a clamping area for clamping the annular workpiece is formed between the clamping block (22) and the side wall of the placement groove (23). A synchronous driving component (3) for controlling several clamping blocks (22) to synchronously slide and abut against the side wall of the annular workpiece is arranged between several mounting bases (21).

2. The clamping mechanism for machining a ring-shaped workpiece according to claim 1, wherein: The synchronous driving component (3) includes driving oil cylinders (31) corresponding to the clamping blocks (22) one by one and oil supply branch pipes (32) corresponding to the mounting bases (21) one by one. The oil supply branch pipes (32) are used to supply oil into the corresponding driving oil cylinders (31). Several oil supply branch pipes (32) are all communicated with an external oil supply main pipe. The piston rod of the driving oil cylinder (31) is fixedly connected with the clamping block (22).

3. The clamping mechanism for machining an annular workpiece according to claim 2, wherein: Several groups of clamping blocks (22) are arranged on one mounting base (21), and several groups of clamping blocks (22) are evenly spaced along the circumferential edge of the milling machine turntable (1). The driving oil cylinder (31) is provided with multiple groups corresponding to the clamping blocks (22). An oil inlet pipe (24) and an oil outlet pipe (25) are arranged on the mounting base (21). One end of the oil inlet pipe (24) is communicated with the oil supply branch pipe (32), and the other end of the oil inlet pipe (24) is communicated with the oil inlets of several driving oil cylinders (31) arranged on the mounting base (21). The oil outlet pipe (25) is used to control the discharge of the oil in several driving oil cylinders (31) arranged on the mounting base (21).

4. A clamping mechanism for machining an annular workpiece according to claim 1, wherein: The clamping block (22) includes two fixing layers (221) and a buffer layer (222) arranged between the two fixing layers (221).

5. A clamping mechanism for machining an annular workpiece according to claim 1, characterized in that: A fixing base (4) is further arranged between the mounting base (21) and the milling machine turntable (1). The fixing base (4) is detachably connected to the milling machine turntable (1). The mounting base (21) is slidably arranged on the fixing base (4) along the radial direction of the milling machine turntable (1). An adjusting component (5) for adjusting the sliding position of the mounting base (21) is arranged on the fixing base (4).

6. The clamping mechanism for machining an annular workpiece according to claim 5, wherein: The adjusting component (5) includes a lead screw (51) rotatably arranged on the fixing base (4), a sliding sleeve (52) threadedly connected with the lead screw (51), and a hand wheel (53) for driving the lead screw (51) to rotate. The sliding sleeve (52) is fixedly connected with the mounting base (21).

7. The clamping mechanism for machining an annular workpiece according to claim 6, characterized in that: A counter-bolting screw (6) is also threadedly connected to the mounting base (21), and one end of the counter-bolting screw (6) passes through the mounting base (21) and abuts against the fixing base (4) in a matching manner.

8. The clamping mechanism for machining a ring-shaped workpiece according to claim 6, wherein: A reference scale line (7) is also arranged on the fixing base (4).

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