Clamping device for machining connecting shaft

Abstract

A clamping device for connecting shaft machining comprises a connecting shaft mounting assembly, a mounting plate clamping assembly and a lower standard plate, a connecting shaft is placed in a connecting shaft mounting groove in the connecting shaft mounting assembly and fixed through a connecting shaft check block, and the connecting shaft mounting assembly provided with the connecting shaft and the lower standard plate are extruded and fixed through the mounting plate clamping assembly. Wherein the mounting plate clamping assembly can select a clamping air cylinder to drive a clamping plate to rotate a clamping structure or a motor to drive a strip-shaped tooth to horizontally move to extrude a fixing structure; two groups of connecting shaft mounting assemblies are further included, the lower standard plate is a double-station clamping device, and a motor in the mounting plate clamping assembly changes the working states of the clamping devices on the two sides through forward and reverse rotation; the pre-taking assembly is used for automatically releasing the machined connecting shaft. The clamping device is high in automation degree, the connecting shaft is rapidly disassembled, the working efficiency is high, simultaneous clamping and simultaneous machining of multiple materials can be achieved, and the working efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining clamping, in particular to a clamping device for machining a connecting shaft. Background Art

[0002] Connecting shafts are widely used in various mechanical equipment. Connecting shafts need to be processed by CNC machine tools to machine positioning holes on the upper and lower end faces for later installation. When the positioning holes to be processed deviate from the center of the circle, due to uneven force, a clamping structure is required to ensure that the product does not shift during the machining force process. In order to improve the connection firmness of the connecting shaft in the mechanical equipment, multiple positioning holes need to be machined on the end face of the connecting shaft. The clamping structure in the existing technology cannot ensure the force stability of multiple positioning holes when they are processed simultaneously. Separate processing will seriously slow down work efficiency, especially for small-sized connecting shafts, and the processing cost is greatly increased.

[0003] The utility model provides a clamping device for machining a connecting shaft to solve the above technical problems. Utility Model Content

[0004] A clamping device for machining a connecting shaft comprises: a connecting shaft mounting assembly, a mounting plate clamping assembly, and a lower standard plate. The connecting shaft mounting assembly comprises a connecting shaft mounting plate and a connecting shaft stopper. The side plate surface of the connecting shaft mounting plate is processed with N connecting shaft mounting grooves, and the side surface of the connecting shaft stopper is processed with an arc-shaped extrusion surface. The connecting shaft is located in the connecting shaft mounting groove and is fixedly installed by the extrusion force of the connecting shaft stopper on the connecting shaft mounting plate. The mounting plate clamping assembly clamps and fixes the connecting shaft mounting assembly on the surface of the lower standard plate.

[0005] Preferably, in the clamping device for machining a connecting shaft, the mounting plate clamping assembly includes a clamping cylinder, a clamping plate, and a clamping auxiliary plate. The cylinder body of the clamping cylinder is fixed to the lower standard plate through the clamping cylinder mounting plate, the output end of the clamping cylinder is connected to one end of the clamping plate through a rotating shaft, one end of the clamping auxiliary plate is connected to the middle part of the clamping plate through a rotating shaft, and the other end is connected to the cylinder body of the clamping cylinder through a rotating shaft.

[0006] Preferably, the clamping device for machining a connecting shaft comprises two groups of the connecting shaft mounting assemblies and a lower standard plate structure. The two groups of structures are mirror-imaged and the mounting plate clamping assemblies are located at both ends of the two groups of mirror-image structures. The mounting plate clamping assemblies comprise a motor, a motor fixing plate, a gear, a bar tooth, and a thrust block. The motor is fixed on the surface of the motor fixing plate. The motor fixing plate is fixedly connected to the clamping cylinder or the lower standard plate. The gear is mounted on the output end of the motor. The gear is meshed with the bar tooth. The bar tooth is slidably connected to the translational slide rail of the surface of the motor fixing plate through a slider. The thrust block is fixed on the surface of the bar tooth. The connecting shaft stopper for multiple connecting shafts is an integral structure. The connecting shaft stopper is slidably connected to the lower standard plate through a guide shaft and a linear bearing.

[0007] Preferably, the clamping device for machining a connecting shaft further includes a pre-feeding component, which includes a first air duct, a second air duct, a third air duct, a push rod, and a thrust spring. One end of the third air duct is connected to the first air duct and the second air duct, and the other end of the third air duct is sealed by a screw. The push rod is placed in the second air duct, and a first sealing ring is provided on the side wall of the push rod step surface. The connection point between the second air duct and the third air duct is located at the rear end of the first seal, and the rear end of the push rod step surface is covered with the thrust spring, and the first air duct is connected to the air source equipment through an air nozzle.

[0008] Preferably, in the clamping device for machining a connecting shaft, a second sealing ring is installed on the inner wall of the front end outlet of the second air duct, so that the sealing degree of the second air duct is improved by the double sealing ring.

[0009] Preferably, in the clamping device for machining a connecting shaft, the first air duct, the second air duct and the third air duct are machined on the surface of the lower standard plate or in a pre-feeding air hole plate fixedly connected to the lower standard plate; if the first air duct, the second air duct and the third air duct are arranged in the pre-feeding air hole plate, the surface of the lower standard plate is machined with a hole for the push rod to pass through.

[0010] Here’s how it works:

[0011] Place the connecting shaft into the connecting shaft installation groove and squeeze it into place through the connecting shaft stopper. Then squeeze and fix the connecting shaft installation assembly after the connecting shaft is installed on the surface of the lower standard plate through the mounting plate clamping assembly. Use a tool to knock the upper surface of the connecting shaft until it is close to the lower standard plate, and then start the positioning hole processing. After the processing is completed, release the connecting shaft stopper and take out the connecting shaft.

[0012] The clamping device for machining the connecting shaft involved in the utility model can realize multi-material clamping according to the specific structural setting of the connecting shaft; in addition, the mirror-image-set one-in-use-one-standby double-station clamping structure can quickly replace the working station through the correspondingly set mounting plate clamping assembly, thereby doubling the work efficiency. The pre-feeding assembly automatically releases the finished feed shaft, which is convenient for operators to unload materials, and the whole machine has a high degree of automation and further improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The specific implementation is further described below in conjunction with the accompanying drawings, wherein:

[0014] Figure 1 It is a schematic diagram of the overall structure of a clamping device for machining a connecting shaft involved in the specific implementation case 1;

[0015] Figure 2 This is a schematic diagram of the connecting shaft block structure involved in the specific implementation case 1

[0016] Figure 3 It is a structural schematic diagram of a clamping device for machining a connecting shaft involved in specific implementation case 3;

[0017] Figure 4 It is a schematic diagram of the structural cross section of the pre-feeding assembly involved in the utility model;

[0018] The specific structure corresponding to the number is as follows:

[0019] Connecting shaft mounting plate 1, connecting shaft mounting groove 11, connecting shaft stopper 2, arc extrusion surface 21, lower standard plate 3, clamping cylinder 41, clamping plate 42, clamping auxiliary plate 43, motor 51, motor fixing plate 52, gear 53, bar gear 54, thrust block 55, pre-feeding assembly 6, first air channel 61, second air channel 62, third air channel 63, push rod 64, thrust spring 65,

[0020] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0021] Specific implementation case 1:

[0022] A clamping device for machining a connecting shaft comprises: a connecting shaft mounting assembly, a mounting plate clamping assembly, and a lower standard plate. The connecting shaft mounting assembly comprises a connecting shaft mounting plate 1 and a connecting shaft stopper 2. The side plate surface of the connecting shaft mounting plate 1 is processed with six connecting shaft mounting grooves 11. The side surface of each connecting shaft stopper 2 is processed with two arc-shaped extrusion surfaces 21 (such as Figure 2As shown), the connecting shaft is located in the connecting shaft mounting groove 11, and the connecting shaft is extruded and fixed by fixing the connecting shaft block 2 to the lower standard plate 3 with screws. One connecting shaft block 2 can realize the extrusion and fixation of two connecting shafts. The mounting plate clamping assembly is fixedly connected to the machining center through the lower standard plate, and the mounting plate clamping assembly clamps and fixes the connecting shaft mounting assembly to the plate surface of the lower standard plate 3.

[0023] like Figure 1 As shown, the mounting plate clamping assembly includes a clamping cylinder 41, a clamping plate 42, and a clamping auxiliary plate 43. The cylinder body of the clamping cylinder 41 is fixed to the lower standard plate 3 through the clamping cylinder mounting plate, the output end of the clamping cylinder 41 is connected to one end of the clamping plate 42 through a rotating shaft, one end of the clamping auxiliary plate 43 is connected to the middle part of the clamping plate 42 through a rotating shaft, and the other end is connected to the cylinder body of the clamping cylinder 41 through a rotating shaft.

[0024] After placing the connecting shaft installation assembly with the installed connecting shaft on the surface of the lower standard plate 3, start the clamping cylinder 41. The clamping plate 42 presses the two end surfaces of the connecting shaft installation plate 1 under the joint action of the clamping cylinder 41 and the clamping auxiliary plate 43. After clamping is completed, use a tool to knock the upper end surface of the connecting shaft to make the lower end surface of the connecting shaft close to the surface of the lower standard plate 3. After completing the position adjustment of the connecting shaft in the Z-axis direction, start the processing of the positioning hole.

[0025] Specific implementation case 2:

[0026] A clamping device for machining a connecting shaft comprises: a connecting shaft mounting assembly, a mounting plate clamping assembly, and a lower standard plate, wherein the connecting shaft mounting assembly comprises a connecting shaft mounting plate 1 and a connecting shaft stopper 2, the side plate surface of the connecting shaft mounting plate 1 is processed with six connecting shaft mounting grooves 11, the side surface of the connecting shaft stopper 2 is processed with six arc-shaped extrusion surfaces 21, the connecting shaft is located in the connecting shaft mounting groove 11, the connecting shaft mounting plate 1 is fixed to the plate surface of the lower standard plate 3, the mounting plate clamping assembly is fixedly connected to the machining center through the lower standard plate, and the mounting plate clamping assembly completes the clamping and fixing of the connecting shaft by applying extrusion force to the connecting shaft mounting plate 1 by the connecting shaft stopper 2.

[0027] The mounting plate clamping assembly includes a motor 51, a motor fixing plate 52, a gear 53, a bar tooth 54, and a thrust block 55. The motor 51 is fixed to the surface of the motor fixing plate 52. The motor fixing plate 52 is fixedly connected to the clamping cylinder or the lower standard plate 3. The output end of the motor 51 is equipped with the gear 53, and the gear 53 is meshed and connected with the bar tooth 54. The bar tooth 54 is slidably connected to the translational slide rail of the motor fixing plate surface through a slider. The thrust block 55 is fixed to the surface of the bar tooth 54. The connecting shaft stopper 2 and the lower standard plate 3 are slidably connected through a guide shaft and a linear bearing guide.

[0028] The motor 51 drives the gear 53 to rotate forward and reverse, and then drives the bar teeth 54 to translate forward and backward. The thrust block 55 applies thrust to the connecting shaft stopper 2. The connecting shaft is squeezed and clamped and released for unloading during the forward and backward translation of the bar teeth 54.

[0029] Specific implementation case 3:

[0030] like Figure 3 As shown, on the basis of specific implementation case 2, the clamping device for machining the connecting shaft includes two groups of the connecting shaft mounting assemblies and the lower standard plate 3 structure. The two groups of structures are mirror-imaged and the mounting plate clamping assemblies are respectively arranged on both sides. The mounting plate clamping assembly includes a motor 51, a motor fixing plate 52, a gear 53, a bar tooth 54, and a thrust block 55. The motor 51 is fixed on the surface of the motor fixing plate 52, and the motor fixing plate 52 is fixedly connected to the clamping cylinder or the lower standard plate 3. The output end of the motor 51 is equipped with the gear 53, and the gear 53 is meshed and connected with the bar tooth 54. The bar tooth 54 is slidably connected to the translational slide rail of the motor fixing plate surface through a slider, and the thrust block 55 is fixed on the surface of the bar tooth 54. The connecting shaft stopper 2 for multiple connecting shafts is an integral structure, and the connecting shaft stopper 2 and the lower standard plate 3 are slidably connected through a guide shaft and a linear bearing guide.

[0031] The motor 51 drives the gear 53 to rotate forward and reverse, and then drives the bar-shaped teeth 54 to translate forward and backward. During the translation of the bar-shaped teeth 54 forward and backward, the thrust block 55 pushes the connecting shaft block 2 horizontally, so that the connecting shaft block 2 squeezes and fixes the connecting shaft in the connecting shaft installation groove 11. Under the translational guiding action of the guide shaft and the linear bearing, the arc-shaped extrusion surface 21 on the inner side of the connecting shaft block 2 is accurately aligned, thereby ensuring the clamping stability of the connecting shaft. The process of the bar-shaped teeth 54 translating in the forward and reverse directions is the process of alternating the use of two sets of clamping devices set in a mirror image. After the product on one side is processed, the bar-shaped teeth 54 translate in the opposite direction to squeeze the connecting shaft block 2 in the clamping structure on the other side, completing the clamping and fixing of the connecting shaft on this side.

[0032] The alternating extrusion and fixing component 7 has a simple structure and realizes a double-station alternating processing mode of one in use and one in reserve, which exponentially improves the processing efficiency of the connecting shaft. The connecting shaft block 2 used for extruding and fixing multiple connecting shafts in the clamping device is set as an integral structure, which can complete the clamping and fixing of all connecting shafts at one time, further improving work efficiency and reducing processing costs.

[0033] Specific implementation case 4:

[0034] Based on the specific implementation cases 2 and 3, the clamping device for machining the connecting shaft further includes a pre-feeding component 6, such as Figure 4 As shown, the pre-feeding assembly 6 includes a first air channel 61, a second air channel 62, a third air channel 63, a push rod 64, and a thrust spring 65 processed on the surface of the lower standard plate 3. One end of the third air channel 63 is connected to the first air channel 61 and the second air channel 62, and the other end of the third air channel 63 is sealed by a screw plug. The push rod 64 is placed in the second air channel 62, and the side wall of the step surface of the push rod 64 is provided with a first sealing ring. The connection point between the second air channel 62 and the third air channel 63 is located at the rear end of the first sealing ring, and the rear end of the step surface of the push rod 64 is sleeved with the thrust spring 65. Spring 65; optionally, a second sealing ring is installed on the inner wall of the front end outlet of the second air duct 62, and the sealing degree of the second air duct 62 is improved by the double sealing ring; the first air duct 61 is connected to the air source equipment through the air nozzle, and the gas in the first air duct 61 enters the second air duct 62 through the third air duct 63. Due to the sealing environment of the second air duct 62, the gas will push the push rod 64 forward, and the push rod 64 extends out of the surface of the lower standard plate 3 to push the connecting shaft stopper 2, so that the connecting shaft stopper 2 is away from the connecting shaft mounting plate 1, which is convenient for the operator or the robot arm to cut the processed connecting shaft.

[0035] Even if the bar teeth no longer apply thrust to the connecting shaft baffle 2 on that side, the connecting shaft will not be automatically released. If a separate air cylinder, electric cylinder or motor-screw is set as a pre-feeding drive device, it will inevitably take up too much space and easily interfere with the machining center equipment, affecting the synchronous machining operation of multiple connecting axes. Here, gas assistance is used to complete the action of pushing the connecting shaft baffle 2 away from the connecting shaft, which can greatly reduce the space occupancy of the structure and avoid interference. Furthermore, the translational movement of the push rod 64 is completed by connecting three airways, with less noise, thereby optimizing the working environment of the machining workshop.

[0036] Optionally, if the diameter of the connecting shaft is too large and the connecting shaft baffle 2 needs to translate at a large distance, it can be considered to fix a pre-feeding air hole plate on the rear plate surface of the lower standard plate 3. The first air channel 61, the second air channel 62, and the third air channel 63 are all arranged in the pre-feeding air hole plate, and the hole for the push rod 64 to pass through the plate surface processing head of the lower standard plate 3 can be used.

[0037] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A clamping device for machining a connecting shaft, characterized in that: It includes a connecting shaft installation component, a mounting plate clamping component, and a lower standard plate. The connecting shaft installation component includes a connecting shaft installation plate and a connecting shaft stopper. The side plate surface of the connecting shaft installation plate is processed with N connecting shaft installation grooves. The side surface of the connecting shaft stopper is processed with an arc extrusion surface. The connecting shaft is located in the connecting shaft installation groove and is fixedly installed by the extrusion force of the connecting shaft stopper on the connecting shaft installation plate. The mounting plate clamping component clamps and fixes the connecting shaft installation component on the surface of the lower standard plate.

2. A clamping device for machining a connecting shaft as claimed in claim 1, characterized in that: The mounting plate clamping assembly includes a clamping cylinder, a clamping plate, and a clamping auxiliary plate. The cylinder body of the clamping cylinder is fixed to the lower standard plate through the clamping cylinder mounting plate. The output end of the clamping cylinder is connected to one end of the clamping plate through a rotating shaft. One end of the clamping auxiliary plate is connected to the middle part of the clamping plate through a rotating shaft, and the other end is connected to the cylinder body of the clamping cylinder through a rotating shaft.

3. A clamping device for machining a connecting shaft as claimed in claim 1, characterized in that: It includes two groups of connecting shaft mounting assemblies and a lower standard plate structure. The two groups of structures are mirror-imaged and the mounting plate clamping assemblies are located at both ends of the two groups of mirror-image structures. The mounting plate clamping assemblies include a motor, a motor fixing plate, a gear, a bar tooth, and a thrust block. The motor is fixed on the surface of the motor fixing plate. The motor fixing plate is fixedly connected to the clamping cylinder or the lower standard plate. The output end of the motor is equipped with the gear, which is meshed with the bar tooth. The bar tooth is slidably connected to the translational slide rail of the motor fixing plate surface through a slider. The thrust block is fixed on the surface of the bar tooth. The connecting shaft stopper for multiple connecting shafts is an integral structure. The connecting shaft stopper is slidably connected to the lower standard plate through a guide shaft and a linear bearing.

4. A clamping device for machining a connecting shaft as claimed in claim 3, characterized in that: It also includes a pre-feeding component, which includes a first air channel, a second air channel, a third air channel, a push rod, and a thrust spring. One end of the third air channel is connected to the first air channel and the second air channel, and the other end of the third air channel is sealed by a screw. The push rod is placed in the second air channel, and a first sealing ring is provided on the side wall of the push rod step surface. The connection point between the second air channel and the third air channel is located at the rear end of the first seal, and the rear end of the push rod step surface is covered with the thrust spring, and the first air channel is connected to the air source equipment through an air nozzle.

5. A clamping device for machining a connecting shaft as claimed in claim 4, characterized in that: A second sealing ring is installed on the inner wall of the front end outlet of the second air passage, and the sealing degree of the second air passage is improved by the double sealing ring.

6. A clamping device for machining a connecting shaft as claimed in claim 4, characterized in that: The first air duct, the second air duct and the third air duct are processed in the surface of the lower standard plate or in the pre-feeding air hole plate fixedly connected to the lower standard plate; if the first air duct, the second air duct and the third air duct are arranged in the pre-feeding air hole plate, the surface of the lower standard plate is processed with a hole for the push rod to pass through.

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