Foot pad and broaching machine

Abstract

The utility model discloses a foot pad, which belongs to the technical field of machining equipment accessories, and adopts the technical scheme that the foot pad comprises a box body, a cover plate and a pre-tightening piece, a containing groove is formed in the box body, the cover plate is arranged at a groove opening of the containing groove and is in sliding fit with the box body, and the pre-tightening piece is arranged in the containing groove. The pre-tightening piece applies pre-tightening force away from the direction of the box body to the cover plate, so that a movable gap is formed between the cover plate and the box body, and the cover plate or the box body is matched to support the machine tool. The foot pad is connected with the machine tool through the cover plate or the box body, so that the machine tool is in contact with the ground through the foot pad, vibration generated when the machine tool works is conducted to the pre-tightening piece through the box body or the cover plate, the pre-tightening piece absorbs the vibration and deforms, the pre-tightening piece deforms through the movable gap, and therefore the vibration of the machine tool is prevented from affecting the working precision of the nearby machine tool through the ground. The utility model further discloses a broaching machine.

Description

Technical Field

[0001] The utility model belongs to the technical field of accessories for machining equipment, and particularly relates to a foot pad and a broaching machine. Background Art

[0002] A broaching machine is a metal cutting machine tool, mainly used for machining through holes, planes and formed surfaces of workpieces, and has wide applications in industrial production. Broaching machines can be divided into internal broaching machines and external broaching machines according to different working natures. By reasonably selecting and using a broaching machine, various high-precision workpiece shapes can be efficiently machined to meet the manufacturing requirements of products.

[0003] For example, a down-type broaching machine disclosed in a Chinese patent with the publication number CN109396535A includes a machine body, a first driving mechanism, a second driving mechanism, a first chuck, a second chuck and a workbench. The first chuck and the second chuck are both used for gripping or loosening a broach. The workbench is fixedly arranged relative to the machine body, and both the workbench and the machine body are fixed on a base.

[0004] The base is usually placed on the ground through a foot pad or directly. When this broaching machine is operating, the broaching of the workpiece by the broach will cause the broaching machine to vibrate and conduct the vibration to the ground through the base. Conventional foot pads can only adjust the level of the broaching machine itself or support the broaching machine. Therefore, the vibration generated during the operation of the broaching machine will affect the working accuracy of nearby machine tools, especially the broaching vibration generated by large-tonnage broaching machines is more serious. To ensure the machining accuracy of adjacent machine tools, the broaching machine can only be installed independently, or the installation interval between the broaching machine and other machine tools is increased, which results in large floor space occupation of the equipment and increases the production cost. Content of the Utility Model

[0005] The purpose of the utility model is to address the above problems existing in the prior art and propose a foot pad. The first technical problem to be solved by the utility model is: how to reduce the vibration of machining equipment during operation from affecting nearby equipment.

[0006] The purpose of the utility model is to address the above problems existing in the prior art and propose a broaching machine. The second technical problem to be solved by the utility model is: how to reduce the broaching vibration generated by the broaching machine from affecting nearby equipment.

[0007] The first technical object of the utility model can be achieved by the following technical solutions:

[0008] A foot pad includes a box body, a cover plate and a pre-tightening member. The box body has a receiving groove. The cover plate is arranged at the notch of the receiving groove and is slidably matched with the box body. The pre-tightening member is arranged in the receiving groove, and the pre-tightening member applies a pre-tightening force in a direction away from the box body to the cover plate, so that there is an activity gap between the cover plate and the box body, and the cover plate or the box body is cooperatively used to support a machine tool.

[0009] With the above technical solution, this foot pad is connected to the machine tool through the cover plate or the box body, so that the foot pad supports the overall weight of the machine tool. At this time, the pre-tightening member is compressed and still has an active clearance. Since the machine tool contacts the ground through the foot pad, the vibration generated during the operation of the machine tool is transmitted to the pre-tightening member through the box body or the cover plate. The pre-tightening member can absorb the vibration and deform, and the active clearance is for the deformation of the pre-tightening member, thereby preventing the vibration of the machine tool from affecting the working accuracy of the nearby machine tools through the ground.

[0010] In the above foot pad, the width of the cover plate is greater than or equal to the width of the box body.

[0011] In the above foot pad, a guide groove is provided on the box body, a guide rod adapted to the guide groove is provided on the cover plate, and the guide rod is in sliding fit with the guide groove.

[0012] In the above foot pad, a countersunk hole is provided on the cover plate, and a stepped surface is formed in the countersunk hole. The box body and the cover plate are limited by a half-thread bolt. The half-thread bolt has a head, a rod portion, and a threaded portion. The head and the rod portion are slidably disposed in the countersunk hole. The pre-tightening force applied by the pre-tightening member to the cover plate causes the head to abut against the stepped surface, and the threaded portion is connected to the box body.

[0013] In the above foot pad, a connecting portion for connecting the machine tool is provided on the cover plate or the box body.

[0014] In the above foot pad, at least one pre-tightening member is provided.

[0015] In the above foot pad, a positioning rod for limiting the lower end of the pre-tightening member is provided at the bottom of the receiving groove, and the number of the positioning rods corresponds to the number of the pre-tightening members one by one.

[0016] In the above foot pad, the positioning rod is detachably connected to the bottom of the receiving groove.

[0017] In the above foot pad, a positioning groove is provided on the inner side of the cover plate, and the positioning groove limits the upper end of the pre-tightening member. The number of the positioning grooves corresponds to the number of the pre-tightening members one by one.

[0018] The second technical object of the present utility model can be achieved by the following technical solution:

[0019] A broaching machine, the broaching machine includes a machine body and the above foot pad. At least one of the foot pads is provided at the bottom of the machine body, and the machine body is supported by each of the foot pads.

[0020] With the above technical solution, a plurality of foot pads are provided at the bottom of the machine body, and the broaching vibration generated by the broaching of the broaching machine is absorbed by the foot pads and will not affect the nearby equipment.

[0021] In summary, the beneficial effects of the present utility model compared with the prior art are as follows:

[0022] As a support for machining equipment such as broaching machines or other machine tools, the present foot pad has a wide range of applications. The vibration generated during the operation of the machining equipment will be absorbed by the foot pad, thus avoiding affecting nearby processing equipment or production lines, and the vibration damping effect is obvious. Moreover, the present foot pad can also prevent the processing vibration of nearby equipment from affecting the machining equipment itself through the ground, that is, two-way vibration damping; the foot pad is installed at the bottom of the broaching machine, which can significantly reduce the influence of the vibration during broaching of the broaching machine on nearby equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the external structure of the embodiment;

[0024] Figure 2 is a schematic diagram of the structure of the box body in the embodiment;

[0025] Figure 3 is a schematic diagram of the structure of the bottom of the cover plate in the embodiment;

[0026] Figure 4 is Figure 1 an exploded structure diagram of

[0027] Figure 5 is Figure 1 one of the sectional views of

[0028] Figure 6 is Figure 1 the second sectional view of

[0029] Figure 7 is another schematic diagram of the structure of the embodiment;

[0030] Figure 8 is a schematic diagram of the structure of the broaching machine.

[0031] Reference numerals: 100, box body; 110, receiving groove; 111, positioning rod; 120, guiding groove;

[0032] 200, cover plate; 210, guide rod; 220, countersunk hole; 221, step surface; 230, assembly groove; 231, through hole one; 240, positioning groove;

[0033] 300, pre-tightening member; 400, movable gap;

[0034] 500, half-thread bolt; 510, head; 520, rod portion; 530, threaded portion;

[0035] 600, connecting portion; 610, stud; 611, through hole two; 700, bed body. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The following are specific embodiments of the present utility model and, in conjunction with the accompanying drawings, further describe the technical solutions of the present utility model, but the present utility model is not limited to these embodiments.

[0037] A footrest, as Figures 1-7 shown, includes a box body 100, a cover plate 200, and a pre-tightening member 300. The box body 100 has a receiving groove 110. The cover plate 200 is disposed at the notch of the receiving groove 110 and is slidably engaged with the box body 100. The pre-tightening member 300 is disposed in the receiving groove 110, and the pre-tightening member 300 applies a pre-tightening force to the cover plate 200 in a direction away from the box body 100, so that there is a movable gap 400 between the cover plate 200 and the box body 100, and the cover plate 200 or the box body 100 cooperates to support the machine tool.

[0038] The width of the cover plate 200 is greater than or equal to the width of the box body 100.

[0039] This footrest has two usage methods. One is to place the box body 100 on the ground and press the cover plate 200 against the bottom of the machining equipment; the other is to invert this footrest so that the cover plate 200 contacts the ground and the box body 100 presses against the bottom of the machining equipment.

[0040] As Figure 7 shown, the cover plate 200 or the box body 100 is connected to the machine tool through a connecting portion 600. The connecting portion 600 is the outer end face of the cover plate 200 or the box body 100, and the outer end face of the cover plate 200 or the box body 100 can directly bear the machine tool.

[0041] In some embodiments, the connecting portion 600 is disposed on the cover plate 200 or the box body 100; specifically, an assembly groove 230 is opened at the center of the outer wall of the cover plate 200 or the box body 100, and the connecting portion 600 is disposed in the assembly groove 230 to ensure that the cover plate 200 or the box body 100 can be stably stressed and also prevent the connecting portion 600 from displacing relative to the cover plate 200 or the box body 100. In other words, whether the connecting portion 600 is disposed on the cover plate 200 or the box body 100 depends on whether it is the cover plate 200 or the box body 100 that is connected to the machine tool. The connecting portion 600 is a stud 610, and a through hole one 231 communicating with the receiving groove 110 is opened at the bottom of the assembly groove 230, and a through hole two 611 communicating with the through hole one 231 is opened at the center of the stud 610.

[0042] As Figures 2-5As shown, a guiding groove 120 is formed on the box body 100, and a guiding rod 210 adapted to the guiding groove 120 is provided on the cover plate 200. The guiding rod 210 is inserted into the guiding groove 120 and is in sliding fit with the guiding groove 120; the cooperation between the guiding rod 210 and the guiding groove 120 guides the sliding direction of the cover plate 200. Multiple guiding rods 210 can be arranged at intervals, and multiple corresponding guiding grooves 120 are also arranged at intervals. In at least one embodiment, the positions of the guiding groove 120 and the guiding rod 210 are swapped.

[0043] As Figure 4 , Figure 6 shown, a counterbore 220 is provided on the cover plate 200, and a stepped surface 221 is formed in the counterbore 220; the box body 100 and the cover plate 200 are limited by a half-thread bolt 500. The half-thread bolt 500 has a head 510, a rod portion 520, and a threaded portion 530. The threaded portion 530 is connected to the box body 100. The head 510 and the rod portion 520 are slidably arranged in the counterbore 220. The pre-tightening force applied by the pre-tightening member 300 to the cover plate 200 causes the head 510 to abut against the stepped surface 221 and limit the cover plate 200. At this time, the pre-tightening member 300 is in a compressed state, the movable gap 400 is maintained, and the distance between the box body 100 and the cover plate 200 is the largest. At least one half-thread bolt 500 is provided, and the number of the counterbores 220 corresponds to the number of the half-thread bolts 500.

[0044] At least one pre-tightening member 300 is provided. According to the weight of the machine tool, a plurality of pre-tightening members 300 are reasonably arranged. Each pre-tightening member 300 jointly applies a pre-tightening force to the cover plate 200 in a direction away from the box body 100, so that after the foot pad is connected to the machine tool, the movable gap 400 still exists; the pre-tightening member 300 is a spring, a spring sheet or an elastic rubber. When the pre-tightening member 300 absorbs the vibration of the machine tool, the movable gap 400 also contracts and resets accordingly.

[0045] As Figures 2-6 shown, a positioning rod 111 is provided at the bottom of the receiving groove 110. The positioning rod 111 is inserted into the lower end of the pre-tightening member 300 to limit the lower end of the pre-tightening member 300. The number of the positioning rods 111 corresponds to the number of the pre-tightening members 300 one by one. The positioning rod 111 is snap-fitted or threadedly connected to the bottom of the receiving groove 110.

[0046] A positioning groove 240 is formed inside the cover plate 200. The upper end of the pre-tightening member 300 is inserted into the positioning groove 240 to limit the pre-tightening member 300. The number of the positioning grooves 240 corresponds to the number of the pre-tightening members 300 one by one. Both the positioning groove 240 and the positioning rod 111 are used to limit the pre-tightening member 300 to prevent the pre-tightening member 300 from displacing or toppling. Either one or both of them can be provided.

[0047] The working principle of a foot pad:

[0048] Multiple feet are connected to the bottom of the machine tool through the connecting part 600, so that each foot jointly supports the overall weight of the machine tool. The box body 100 contacts the ground. The vibration generated by the machine tool itself is conducted to the pre-tightening part 300 through the cover plate 200, and the pre-tightening part 300 will absorb the vibration, thus preventing the vibration of the machine tool from affecting the accuracy of nearby equipment through the ground.

[0049] Meanwhile, the vibration generated by nearby equipment is also difficult to be conducted to this machine tool through this foot, thus preventing the mutual influence between various equipment.

[0050] A broaching machine, as Figure 8 shown, this broaching machine includes a machine body 700 and the above-mentioned feet. At least one foot is arranged between the bottom of the machine body 700 and the ground. The machine body 700 is connected to the cover plate 200 or the box body 100, so that each foot jointly supports the weight of the broaching machine. In some embodiments, the bottom of the machine body 700 is supported by four feet.

[0051] The specific embodiments described herein are only illustrative of the spirit of the present utility model; those skilled in the art to which the present utility model pertains can make various modifications or supplements or use similar ways to replace the described specific embodiments, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A footrest, characterized in that: It includes a box body (100), a cover plate (200), and a pre-tightening member (300). An accommodation groove (110) is provided inside the box body (100). The cover plate (200) is arranged at the notch of the accommodation groove (110) and is slidably matched with the box body (100). The pre-tightening member (300) is arranged inside the accommodation groove (110), and the pre-tightening member (300) applies a pre-tightening force in a direction away from the box body (100) to the cover plate (200), so that there is a movable gap (400) between the cover plate (200) and the box body (100). The cover plate (200) or the box body (100) cooperates to support the machine tool.

2. The footrest according to claim 1, characterized in that: The width of the cover plate (200) is greater than or equal to the width of the box body (100).

3. The footrest according to claim 1, wherein: A guide groove (120) is provided on the box body (100), and a guide rod (210) adapted to the guide groove (120) is provided on the cover plate (200). The guide rod (210) is slidably matched with the guide groove (120).

4. The footrest according to claim 1, characterized in that: A countersunk hole (220) is provided on the cover plate (200), and a stepped surface (221) is formed inside the countersunk hole (220). The box body (100) and the cover plate (200) are limited by a half-thread bolt (500). The half-thread bolt (500) has a head (510), a rod portion (520), and a threaded portion (530). The head (510) and the rod portion (520) are slidably arranged inside the countersunk hole (220). The pre-tightening force applied by the pre-tightening member (300) to the cover plate (200) makes the head (510) abut against the stepped surface (221), and the threaded portion (530) is connected to the box body (100).

5. The footrest according to claim 1, characterized in that: A connection portion (600) for connecting the machine tool is provided on the cover plate (200) or the box body (100).

6. The footrest according to any one of claims 1-5, characterized in that: At least one pre-tightening member (300) is provided.

7. The footrest according to claim 6, wherein: A positioning rod (111) for limiting the lower end of the pre-tightening member (300) is provided at the bottom of the accommodation groove (110). The number of the positioning rods (111) corresponds to the number of the pre-tightening members (300) one by one.

8. The footrest according to claim 7, characterized in that: The positioning rod (111) is detachably connected to the bottom of the accommodation groove (110).

9. The footrest according to claim 6, characterized in that: A positioning groove (240) is provided inside the cover plate (200). The positioning groove (240) limits the upper end of the pre-tightening member (300). The number of the positioning grooves (240) corresponds to the number of the pre-tightening members (300) one by one.

10. A broaching machine, characterized in that: The broaching machine includes a machine body (700) and the foot pad according to any one of claims 1-9. At least one of the foot pads is provided at the bottom of the machine body (700), and the machine body (700) is supported by each of the foot pads.

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