Machining clamp

Abstract

The utility model relates to the technical field of numerical control machining, in particular to a machining clamp which comprises a clamp body used for machining and a workpiece to be machined arranged on the clamp body, a limiting assembly is arranged above the clamp body and located at the top of the workpiece to be machined, and the limiting assembly is used for limiting the workpiece to be machined and preventing the workpiece to be machined from rotating during machining. The limiting assembly comprises a connecting disc, a connecting rod is arranged at the top of the connecting disc and used for fixing the position of the connecting disc, and a limiting column is installed at the bottom of the connecting disc; the limiting assembly is matched with the specific portion of the workpiece (such as a gear) to be machined through the limiting column, rotation of the workpiece to be machined during machining can be effectively avoided, particularly, due to the synergistic effect of the clamping strip and the limiting column and accurate adjustment of the position and pressure of the limiting column through the lead screw, it is guaranteed that the position of the workpiece to be machined is stable in the whole machining process, and machining precision is improved. The machining precision is greatly improved, and it is guaranteed that the product quality meets the high-standard requirement.

Description

TECHNICAL FIELD

[0001] The utility model relates to numerical control processing technical field, concretely is a kind of machining fixture. BACKGROUND

[0002] When using the claw to process the gear, the surface of the claw in contact with the gear will gradually wear after a long time of use. This will reduce the contact area between the claw and the gear, and the friction will decrease, so that it cannot provide enough clamping force to prevent the gear from rotating. For example, the clamping surface of the claw is originally flat and smooth, and after long-term friction with the surface of the gear, pits or wear marks appear, which will cause uneven distribution of clamping force, easily causing the gear to rotate under the action of machining force. Thus affecting the machining accuracy of the gear, based on this, the present application provides a kind of machining fixture. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model provides a kind of machining fixture, solve the problem of vibration influence machining when gear is processed in prior art.

[0004] The machining fixture of the utility model, including the fixture for processing and the workpiece to be processed arranged on the fixture, the upper part of the fixture is located on the top of the workpiece to be processed and is provided with a limiting assembly, the limiting assembly is used to limit the workpiece to be processed, to avoid the workpiece to be processed from rotating during processing;

[0005] The limiting assembly includes a connecting disc, a connecting rod is arranged on the top of the connecting disc for fixing the position of the connecting disc, a limiting column is installed at the bottom of the connecting disc, and the limiting column is used to cooperate with the workpiece to be processed.

[0006] As a further improvement of the utility model, the connecting disc includes a disc body, a fixed stand is arranged in the middle of the disc body, and a positioning disc is installed on the fixed stand.

[0007] As a further improvement of the utility model, one or more plug-in interfaces are arranged in an annular array on the outer side of the positioning disc, and a clamping strip is installed at the plug-in interface.

[0008] As a further improvement of the utility model, a mounting groove is arranged on one side of the clamping strip, the mounting groove is matched with the limiting column, and the workpiece to be processed is limited.

[0009] As a further improvement of the utility model, an adjusting hole is arranged at one end of the clamping strip, a lead screw is arranged on the inner side of the adjusting hole, and the lead screw is matched with the limiting column.

[0010] As a further improvement of the utility model, a convex ring is arranged below the clamping strip on the outer side of the disc body, and the diameter of the convex ring is smaller than the diameter of the disc body.

[0011] As a further improvement of the utility model, one side of the clamping strip is provided with a clamping groove corresponding to the convex ring, and the inner side of the clamping groove is provided in a rough form.

[0012] As a further improvement of the utility model, the clamp comprises a base, and an adjustable clamping jaw is arranged on the base and is adapted to the workpiece to be machined.

[0013] Compared with the prior art, the utility model has the beneficial effects as follows:

[0014] The utility model discloses a limiting assembly is matched with the specific part of the workpiece (such as a gear) through a limiting column, can effectively avoid the workpiece to be machined to rotate when machining, especially the synergistic effect of the clamping strip and the limiting column, and the accurate adjustment of the limiting column position and pressure of the lead screw, ensure that the workpiece to be machined is stable in the whole machining process, greatly improve the machining precision, ensure that the product quality meets the high standard requirement.

[0015] The clamping strip position can be flexibly adjusted on the positioning disc, and the lead screw can also realize personalized adjustment of the limiting column, so that the clamp can adapt to workpieces of different sizes, shapes and specifications, such as various types of gears, and this feature helps to ensure high precision when machining various products and reduces machining errors caused by changes in product specifications.

[0016] Moreover, the convex ring is matched with the clamping groove, and the inner side of the clamping groove is a rough surface, so that the friction between the clamping strip and the disc body is increased, preventing the clamping strip from sliding or shaking. At the same time, the stable support of the fixed stand to the positioning disc makes the whole limiting assembly stable in structure during the machining process, can better resist the influence of machining force, ensures the smooth progress of the machining process, reduces the vibration and displacement of the workpiece to be machined during machining through stable limiting, reduces the machining error caused by vibration, improves the quality and smoothness of the machined surface, and helps to improve the overall performance and reliability of the product. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the present application, constitute a part of the present application, and the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0018] Figure 1 It is a combined perspective structure schematic view of the clamp, the workpiece to be machined and the limiting assembly of the utility model.

[0019] Figure 2 It is a combined perspective structure schematic view of the clamp, the workpiece to be machined and the limiting assembly of the utility model.

[0020] Figure 3 It is a combined perspective structure schematic view of the clamp, the workpiece to be machined and the limiting assembly of the utility model.

[0021] Figure 4 It is the three-dimensional structure schematic view of the connecting disc of the utility model;

[0022] Figure 5 It is the overhead structure schematic view of the connecting disc of the utility model;

[0023] Figure 6 It is the front view structure schematic view of the connecting disc of the utility model.

[0024] In the drawing: 1, clamp; 2, piece to be processed; 3, limiting assembly;

[0025] 11, base; 12, clamping jaw;

[0026] 31, limiting column; 32, connecting rod; 33, connecting disc;

[0027] 331, disc body; 332, fixed stand; 333, clamping groove; 334, adjusting hole; 335, clamping strip; 336, mounting groove; 337, plug-in interface; 338, positioning disc; 339, convex ring. DETAILED DESCRIPTION

[0028] The following will disclose multiple embodiments of the utility model with drawings, for the purpose of clear illustration, many details on the real object will be described in the following description. However, it should be understood that these details on the real object should not be used to limit the utility model. That is to say, in some embodiments of the utility model, these details on the real object are unnecessary. In addition, for the purpose of simplifying the drawing, some commonly used structures and components will be drawn in a simple schematic way in the drawing.

[0029] In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the utility model.

[0030] Please refer to Figures 1-6 The friction force between the clamping jaw and the gear is reduced, which directly leads to that the clamping jaw cannot provide sufficient clamping force. When the gear is machined, it will be subjected to various machining forces, such as cutting force, torque, etc. When the clamping force of the clamping jaw is insufficient, it is difficult to resist these machining forces, and the gear is easy to rotate under the action of the machining force. Once the gear rotates, its position in the machining process will change, and it cannot be machined according to the predetermined machining path and accuracy requirement, thereby affecting the machining accuracy of the gear, which may cause problems such as size deviation and shape error of the gear, so that the machined gear does not meet the design requirements. Based on this, the present application provides a machining clamp 1, which comprises a clamp 1 for machining and a workpiece 2 to be machined arranged on the clamp 1, and is characterized in that:

[0031] A limiting assembly 3 is arranged on the top of the fixture 1 and above the workpiece 2 to be machined, and is used to limit the workpiece 2 to avoid rotation during machining.

[0032] The limiting assembly 3 comprises a connecting disc 33, the top of which is provided with a connecting rod 32 for fixing the position of the connecting disc 33, and the bottom of which is provided with a limiting column 31 for cooperation with the workpiece 2 to be machined.

[0033] The connecting disc 33 is arranged above the fixture 1 and at the top of the workpiece to be machined. It can be a circular metal disc with a diameter slightly larger or smaller than the outer diameter of the workpiece to be machined, so as to better cover the top of the workpiece and facilitate the installation of the limiting component. The material of the connecting disc 33 can be high-strength alloy steel to ensure that it will not deform under stress during machining.

[0034] The connecting rod 32 is installed at the top center of the connecting disc 33 and serves to fix the connecting disc 33. It can be a cylindrical rod body, one end of which is fixed to the connecting disc 33 by welding or bolt connection, and the other end is connected to the fixed structure of the machine tool, for example, the connecting rod 32 can be screwed into the screw hole of the cross beam of the machine tool for convenient disassembly and installation. In order to ensure the stability of the connection, the length and diameter of the connecting rod 32 need to be reasonably designed according to the actual machining requirements and the structure of the machine tool.

[0035] The limiting column 31 is installed at the bottom of the connecting disc 33, and the number can be determined according to the characteristics of the gear and the machining requirements. Assuming that the workpiece to be machined is a standard cylindrical gear with multiple tooth grooves, in order to effectively limit the rotation of the gear, 3-4 limiting columns 31 can be evenly distributed at the bottom of the connecting disc 33. The shape of the limiting column 31 can be designed as a tapered bottom, which can better position and fix when cooperating with the tooth groove of the gear. The material of the limiting column 31 can also be selected as alloy steel, and the surface thereof is subjected to quenching treatment to improve the hardness and wear resistance and reduce wear during contact with the gear.

[0036] Working process

[0037] During gear machining, first place the workpiece to be machined on the fixture 1, and ensure its position. Then, fix the connecting disc 33 on the machine tool through the connecting rod 32, so that the limiting column 31 is aligned with the tooth groove or the through hole of the gear and inserted therein. In this way, during machining, when the cutter performs cutting and other operations on the gear, the gear is effectively limited from rotating due to the cooperation of the limiting column 31 and the tooth groove, thereby ensuring the stability and precision of machining.

[0038] The gear to be machined is limited by the limiting assembly 3, which avoids the rotation of the gear during machining. This enables the cutter to accurately machine the gear according to the predetermined machining path and parameters, reduces the machining error caused by the rotation of the gear, improves the machining accuracy of the gear, and ensures the product quality.

[0039] The limiting assembly 3 makes the gear more stable during machining, and does not shake or displace due to cutting force or other external forces. This helps to improve the stability of the machining process, reduce the wear and damage of the cutter, prolong the service life of the cutter, and also reduce the vibration and noise during machining, improving the machining environment.

[0040] The limiting assembly 3 has a relatively simple structure, and the installation and removal of the connecting disc 33, connecting rod 32 and limiting column 31 are relatively convenient. When replacing gears of different specifications to be machined, only the position of the limiting column 31 needs to be adjusted or the corresponding limiting column 31 needs to be replaced, without the need for complex adjustment of the entire clamp 1, improving production efficiency.

[0041] The connecting disc 33 includes a disc body 331, and a fixed column 332 is arranged in the middle of the disc body 331, and a positioning disc 338 is installed on the fixed column 332.

[0042] The positioning disc 338 is annularly arranged on the outer side of the connecting disc 33, and one or more insertion interfaces 337 are arranged on the outer side of the positioning disc 338.

[0043] The connecting disc 33 includes a disc body 331, and a fixed column 332 is arranged in the middle of the disc body 331, and a positioning disc 338 is installed on the fixed column 332.

[0044] The connecting disc 33 includes a disc body 331, and a fixed column 332 is arranged in the middle of the disc body 331, and a positioning disc 338 is installed on the fixed column 332.

[0045] The connecting disc 33 includes a disc body 331, and a fixed column 332 is arranged in the middle of the disc body 331, and a positioning disc 338 is installed on the fixed column 332.

[0046] The connecting disc 33 includes a disc body 331, and a fixed column 332 is arranged in the middle of the disc body 331, and a positioning disc 338 is installed on the fixed column 332.

[0047] The connecting disc 33 includes a disc body 331, and a fixed column 332 is arranged in the middle of the disc body 331, and a positioning disc 338 is installed on the fixed column 332.

[0048] The positioning disc 338 is installed on the fixed column 332 and can rotate by a certain angle around the fixed column 332, facilitating the adjustment of the position of the clamping strip 335. The outer side of the positioning disc 338 is annularly arranged with a plurality of insertion interfaces 337, and the number of the insertion interfaces 337 can be determined according to actual processing requirements. For example, when gears of different specifications are processed, different numbers of clamping strips 335 can be required for limiting.

[0049] The clamping strip 335 is inserted into the positioning disc 338 through the insertion interface 337 and can slide and adjust to a certain extent in the insertion interface 337 as required. The clamping strip 335 is a long strip-shaped metal piece and has high hardness and wear resistance.

[0050] The mounting groove 336 is formed on one side of the clamping strip 335 and is adapted to the limiting column 31, and the limiting column 31 can be tightly mounted in the mounting groove 336. After the gear to be processed is placed on the clamp 1, the limiting column 31 is inserted into a specific part (such as a tooth groove or a through hole) of the gear, thereby limiting the gear to be processed and preventing it from rotating during processing.

[0051] An adjusting hole 334 is formed at one end of the strip, and a lead screw is mounted on the inner side of the adjusting hole 334. The lead screw can be adjusted in extension and retraction by rotation, and the end thereof is adapted to the limiting column 31. When it is necessary to adjust the position of the limiting column 31 or apply different pressure to the limiting column 31, the lead screw can be rotated to achieve the adjustment. For example, when gears of different thicknesses or sizes are processed, the lead screw can be adjusted to make the limiting column 31 better contact with the gear and provide appropriate limiting force.

[0052] The outer side of the disc body 331 is provided below the clamping strip 335 with a convex ring 339, and the diameter of the convex ring 339 is smaller than that of the disc body 331. The convex ring 339 serves as a support and positioning for the clamping strip 335, making the clamping strip 335 more stable during work.

[0053] The clamping strip 335 is provided with a clamping groove 333 on the side corresponding to the convex ring 339, and the inner side of the clamping groove 333 is provided in a rough shape. When the clamping strip 335 is installed on the positioning disc 338, the clamping groove 333 cooperates with the convex ring 339, and the rough inner side can increase the friction between the clamping groove 333 and the convex ring 339, preventing the clamping strip 335 from sliding or shaking during processing, and further improving the stability of the limiting.

[0054] The insertion hole 337 on the positioning disc 338 allows flexible installation and position adjustment of the clamping strip 335, and the design of the screw rod and the adjusting hole 334 enables the position and limiting force of the limiting column 31 to be accurately adjusted according to the size and shape of different workpieces 2, which enables the clamp 1 to adapt to the machining requirements of gears of various specifications, improves the versatility and applicability of the clamp 1, reduces the cost of enterprises due to frequent replacement of the clamp 1 for machining different products, and provides stable and reliable limiting for the gear to be machined through the close cooperation of the installation groove 336 and the limiting column 31 and the interaction of the clamping groove 333 and the convex ring 339. Especially, the rough surface inside the clamping groove 333 increases the friction force, effectively prevents the sliding and shaking of the clamping strip 335, ensures that the gear does not rotate during the machining process, and significantly improves the machining precision and quality of the gear.

[0055] The overall structure of the clamp 1 is relatively simple, and the connection and adjustment mode between the various components is easy to understand and operate. Workers can quickly install, adjust and disassemble during use, reducing the preparation time before machining and the operation difficulty during machining, and improving the production efficiency.

[0056] The clamp 1 comprises a base 11, and an adjustable clamping jaw 12 is arranged on the base 11, and the clamping jaw 12 is adapted to the workpiece 2 to be machined.

[0057] The above only describes the embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the scope of the claims of the present application.

Claims

1. A machining clamp, comprising a clamp (1) for machining and a workpiece (2) to be machined arranged on the clamp (1), characterized in that: a limiting assembly (3) is arranged on the top of the workpiece (2) above the clamp (1), and the limiting assembly (3) is used for limiting the workpiece (2) to avoid rotation during machining; the limiting assembly (3) comprises a connecting disc (33), the top of the connecting disc (33) is provided with a connecting rod (32) for fixing the position of the connecting disc (33), and the bottom of the connecting disc (33) is provided with a limiting column (31) for cooperating with the workpiece (2) to be fixed.

2. A machining jig according to claim 1, characterized in that: The connecting disc (33) comprises a disc body (331), the middle of the disc body (331) is provided with a fixed stand (332), and the fixed stand (332) is provided with a positioning disc (338).

3. A machining jig according to claim 2, characterized in that: The outer side of the positioning disc (338) is annularly arranged with one or more plug-in interfaces (337), and the plug-in interfaces (337) are provided with clamping strips (335).

4. A machining jig according to claim 3, characterized in that: One side of the clamping strip (335) is provided with a mounting groove (336), and the mounting groove (336) is matched with the limiting column (31) and is used for limiting the workpiece (2).

5. A machining jig according to claim 3, characterized in that: One end of the clamping strip (335) is provided with an adjusting hole (334), the inner side of the adjusting hole (334) is provided with a screw rod, and the screw rod is matched with the limiting column (31).

6. A machining jig according to claim 2, characterized in that: The outer side of the disc body (331) is provided with a convex ring (339) below the clamping strip (335), and the diameter of the convex ring (339) is smaller than the diameter of the disc body (331).

7. A machining jig according to claim 3, characterized in that: One side of the clamping strip (335) is provided with a clamping groove (333) corresponding to the convex ring (339), and the inner side of the clamping groove (333) is provided in a rough shape.

8. A machining fixture according to claim 1, characterized in that: The clamp (1) comprises a base (11), and the base (11) is provided with an adjustable clamping jaw (12) matched with the workpiece (2).

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