Broaching machine upper cutter grabbing mechanism with adjustable center

Abstract

The utility model relates to a broaching machine upper grabbing cutter body mechanism capable of adjusting the center, which belongs to the technical field of broaching machine upper grabbing cutter bodies and comprises a broaching machine, an upper grabbing cutter body mounting seat is fixedly mounted at the lifting end of the broaching machine, and an adjusting assembly is arranged at the bottom of the upper grabbing cutter body mounting seat. The adjusting assembly comprises two sets of front-back guide blocks fixedly installed at the bottom of the upper cutter grabbing body installation base, two sets of left-right guide blocks are fixedly installed at the bottom of the upper cutter grabbing body installation base, and the number of the front-back guide blocks in one set is two. According to the broaching machine upper grabbing cutter body mechanism with the adjustable center, the front-back positioning plate slides between the two front-back guide blocks, the position of the upper grabbing cutter body is adjusted front and back, the left-right positioning plate slides between the two left-right guide blocks, the position of the upper grabbing cutter body is adjusted left and right, and the upper grabbing cutter body is conveniently aligned; and the coaxiality error of the center positions of the upper grabbing cutter main body and the broach is within an allowable range.

Description

Technical Field

[0001] This utility model relates to the field of tool gripping body technology on a broaching machine, specifically a tool gripping body mechanism for a broaching machine with adjustable center. Background Technology

[0002] A broaching machine is a metal cutting machine tool that uses a broach to cut workpieces, achieving efficient and high-precision machining through the linear motion of the broach. Broaching machines have a simple structure, are mostly hydraulically driven, and offer smooth movement with stepless adjustment of the broaching speed. Based on the machined surface, they can be divided into internal broaching machines and external broaching machines; based on their layout, they can be divided into horizontal and vertical types. Although broaching machines are more suitable for mass production due to the high manufacturing cost of broaches, their high precision and efficiency make them widely used in the automotive, aerospace, and other fields.

[0003] During broaching machine assembly, there are strict coaxiality requirements between the broach center of the upper gripper body and the gripper hole center of the lower gripper body. Excessive coaxiality between these two centers will severely affect broaching accuracy and may even prevent the broach guide from properly inserting into the gripper hole of the lower gripper body, causing the broaching machine to malfunction.

[0004] However, the common broaching machine's gripper body mechanism is a fixed structure, and the center position of the upper gripper body cannot be adjusted. During broaching machine assembly, if the coaxiality error between the center of the upper gripper body and the center of the gripping hole of the lower gripper body exceeds the tolerance, it is necessary to scrape the surface of the upper gripper body mounting base or add adjusting shims until the coaxiality of the center of the upper gripper body and the center of the gripping hole of the lower gripper body is adjusted to within the error range. This structural design undoubtedly increases the workload of broaching machine assembly and adjustment, and the adjustment is relatively difficult. At the same time, if the accuracy of the broaching machine decreases during the later processing, it is also very time-consuming and laborious to readjust the accuracy of the broaching machine. Therefore, an adjustable-center broaching machine gripper body mechanism is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an adjustable-center broaching bed gripper mechanism, which has advantages such as convenient adjustment of the broaching bed center position, and solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An adjustable-center broaching bed gripping mechanism includes a broaching bed, wherein an upper gripping body mounting seat is fixedly installed on the lifting end of the broaching bed, and an adjustment component is provided at the bottom of the upper gripping body mounting seat;

[0008] The adjustment assembly includes two sets of front and rear guide blocks fixedly installed at the bottom of the upper gripper body mounting base. Two sets of left and right guide blocks are fixedly installed at the bottom of the upper gripper body mounting base. One set of the front and rear guide blocks has two blocks, and one set of the left and right guide blocks has two blocks. A front and rear positioning plate is slidably installed between the two front and rear guide blocks, and a left and right positioning plate is slidably installed between the two left and right guide blocks.

[0009] The upper gripper body is inserted through the top of the upper gripper mounting base, and the upper gripper body is inserted through the top of the front and rear positioning plates and the left and right positioning plates.

[0010] Furthermore, the top of the upper gripper body mounting base is provided with a mounting through hole larger than the diameter of the upper gripper body, and the top of the front and rear positioning plates and the left and right positioning plates are provided with positioning through holes that are adapted to the upper gripper body.

[0011] Furthermore, the top of the front and rear positioning plates is provided with front and rear waist holes, and the top of the left and right positioning plates is provided with left and right waist holes. The mounting screws on the front and rear positioning plates and the left and right positioning plates pass through the front and rear waist holes and the left and right waist holes, respectively.

[0012] Furthermore, one side of the front and rear guide blocks is threaded with two left and right adjusting screws, one end of which contacts one side of the left and right positioning plates. Both ends of the front and rear guide blocks are threaded with front and rear adjusting screws, one end of which contacts one side of the front and rear positioning plates.

[0013] Furthermore, two lower brackets are fixedly installed on the top of the broaching machine base, and a detection mandrel is inserted into the mounting hole on the top of the lower bracket.

[0014] Furthermore, a dial indicator is magnetically attached to the surface of the detection mandrel near its top, and the probe of the dial indicator is in contact with the surface of the upper gripper body.

[0015] Furthermore, a cylinder is fixedly installed at the bottom of the left and right positioning plates, and two connecting side plates are fixedly installed at the movable end of the cylinder.

[0016] Furthermore, a retaining sleeve is fixedly installed between the two connecting side plates, and the retaining sleeve is fixedly installed on the surface of the upper gripper body.

[0017] Compared with the prior art, this utility model provides an adjustable-center broaching machine gripping body mechanism, which has the following beneficial effects:

[0018] This adjustable center broaching machine tool gripper mechanism allows for front-to-back adjustment of the upper tool gripper body's position via front and rear positioning plates sliding between two front and rear guide blocks, and left-to-right adjustment of the upper tool gripper body's position via left and right positioning plates sliding between two left and right guide blocks. This facilitates alignment of the upper tool gripper body, ensuring that the coaxiality error between the upper tool gripper body and the broach's center position is within acceptable limits. This solves the common problem of fixed installation positions in broaching machine tool gripper mechanisms, making it difficult to adjust the center coaxiality of the upper and lower tool gripper bodies as needed. Attached Figure Description

[0019] Figure 1 This is a front view of the broaching machine of this utility model;

[0020] Figure 2 This is a schematic diagram of the installation of the upper gripper body mounting base of this utility model;

[0021] Figure 3 This is a front view of the upper gripper body mounting base of this utility model;

[0022] Figure 4 This is a side view of the upper gripper body mounting base of this utility model;

[0023] Figure 5 This is a bottom view of the upper gripper body mounting base of this utility model;

[0024] Figure 6 This is a front sectional view of the upper gripper body mounting base of this utility model;

[0025] Figure 7 This is a side sectional view of the upper gripper body mounting base of this utility model;

[0026] Figure 8 This is a rear sectional view of the upper gripper body mounting base of this utility model;

[0027] Figure 9 This is a three-dimensional view of the front and rear positioning plates of this utility model;

[0028] Figure 10 This is a three-dimensional view of the left and right positioning plates of this utility model.

[0029] In the diagram: 1. Broaching machine; 2. Upper gripper body mounting base; 3. Front and rear guide blocks; 4. Left and right guide blocks; 5. Front and rear positioning plates; 51. Front and rear waist holes; 6. Left and right positioning plates; 61. Left and right waist holes; 7. Left and right adjusting screws; 8. Front and rear adjusting screws; 9. Upper gripper body; 10. Lower chuck; 11. Detection spindle; 12. Dial indicator; 13. Cylinder; 14. Connecting side plate; 15. Compression sleeve. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1 The adjustable center broaching bed gripping body mechanism in this embodiment includes a broaching bed 1, an upper gripping body mounting seat 2 is fixedly installed on the lifting end of the broaching bed 1, and an adjustment component is provided at the bottom of the upper gripping body mounting seat 2.

[0032] Please see Figures 3 to 5 In this embodiment, the adjustment component includes two sets of front and rear guide blocks 3 fixedly installed at the bottom of the upper gripper body mounting base 2, and two sets of left and right guide blocks 4 fixedly installed at the bottom of the upper gripper body mounting base 2. The number of front and rear guide blocks 3 in one set is two, and the number of left and right guide blocks 4 in one set is two. A front and rear positioning plate 5 is slidably installed between the two front and rear guide blocks 3, and a left and right positioning plate 6 is slidably installed between the two left and right guide blocks 4.

[0033] Please see Figure 6 and Figure 7 In this embodiment, the upper gripper body 9 is inserted through the top of the upper gripper mounting base 2, and the upper gripper body 9 is inserted through the top of the front and rear positioning plates 5 and the left and right positioning plates 6. The upper gripper body 9 is fixedly connected to the bottom of the left and right positioning plates 6. The front and rear positioning plates 5 slide between the two front and rear guide blocks 3, causing the left and right positioning plates 6 to slide back and forth, thereby causing the upper gripper body 9 to move back and forth. The left and right positioning plates 6 slide between the two left and right guide blocks 4, thereby causing the upper gripper body 9 to move left and right.

[0034] The upper gripper body mounting base 2 has a mounting through hole at its top that is larger than the diameter of the upper gripper body 9. The front and rear positioning plates 5 and the left and right positioning plates 6 have positioning through holes at their tops that are adapted to the upper gripper body 9. When the front and rear positioning plates 5 and the left and right positioning plates 6 move, they drive the upper gripper body 9 to move, and the mounting through holes at the top of the upper gripper body mounting base 2 move.

[0035] Please see Figure 9 and Figure 10 In this embodiment, the top of the front and rear positioning plates 5 is provided with front and rear waist holes 51, and the top of the left and right positioning plates 6 is provided with left and right waist holes 61. The mounting screws on the front and rear positioning plates 5 and the left and right positioning plates 6 pass through the front and rear waist holes 51 and the left and right waist holes 61, respectively. The front and rear waist holes 51 and the left and right waist holes 61 allow the front and rear positioning plates 5 and the left and right positioning plates 6 to be adjusted and moved within the range of the front and rear waist holes 51 and the left and right waist holes 61.

[0036] Please see Figure 3 and Figure 4 In this embodiment, two left-right adjusting screws 7 are threadedly connected to one side of the front and rear guide blocks 3. One end of the left-right adjusting screw 7 contacts one side of the left and right positioning plates 6. Both ends of the front and rear guide blocks 3 are threadedly connected to front-rear adjusting screws 8. One end of the front-rear adjusting screw 8 contacts one side of the front and rear positioning plates 5. When the left-right adjusting screws 7 rotate, the left and right positioning plates 6 move; when the front-rear adjusting screws 8 rotate, the front and rear positioning plates 5 move.

[0037] Please see Figure 1 and Figure 2 In this embodiment, two lower brackets 10 are fixedly installed on the top of the base of the broaching machine 1, and a detection mandrel 11 is inserted through the top mounting hole of the lower bracket 10.

[0038] Among them, a dial indicator 12 is magnetically attached to the surface of the detection spindle 11 near the top, and the probe of the dial indicator 12 is in contact with the surface of the upper gripper body 9.

[0039] Specifically, when measuring the coaxiality of the upper gripper body 9, rotate the detection spindle 11, observe the reading of the dial indicator 12, and measure the offset direction and value of the upper gripper body 9. When there is a left-right error between the upper gripper body 9 and the center of the detection spindle 11, loosen the mounting screws in the left and right waist holes 61, rotate the left-right adjusting screws 7 to move the left and right positioning plates 6, and adjust the position of the upper gripper body 9 left and right. When there is a front-back error between the upper gripper body 9 and the center of the detection spindle 11, loosen the mounting screws inside the front and rear waist holes 51, rotate the front-back adjusting screws 8 to move the front and rear positioning plates 5, and adjust the position of the upper gripper body 9 front and back.

[0040] Please see Figure 3 and Figure 8 In this embodiment, a cylinder 13 is fixedly installed at the bottom of the left and right positioning plates 6, and two connecting side plates 14 are fixedly installed at the movable end of the cylinder 13.

[0041] A retainer 15 is fixedly installed between the two connecting side plates 14, and the retainer 15 is fixedly installed on the surface of the upper gripper body 9.

[0042] The working principle of the above embodiment is as follows: When there is a left-right error between the upper gripper body 9 and the center of the detection spindle 11, loosen the mounting screws in the left and right waist holes 61, rotate the left-right adjusting screws 7, drive the left and right positioning plates 6 to move, and adjust the position of the upper gripper body 9 left and right. When there is a front-back error between the upper gripper body 9 and the center of the detection spindle 11, loosen the mounting screws inside the front and back waist holes 51, rotate the front-back adjusting screws 8, drive the front and back positioning plates 5 to move, and adjust the position of the upper gripper body 9 front and back.

[0043] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that achieves the desired beneficial effect can be implemented. Furthermore, all electrical components in this embodiment are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer that performs control functions. Those skilled in the art can control the electrical components through simple programming, and the existing disclosed power connection technologies are common knowledge in the field. Therefore, this embodiment will not elaborate further on their specific structural composition and working principles.

[0044] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tool gripping mechanism on an adjustable-center broaching bed, comprising a broaching bed (1), characterized in that: The lifting end of the broaching machine (1) is fixedly installed with an upper gripper body mounting base (2), and an adjustment component is provided at the bottom of the upper gripper body mounting base (2); The adjustment assembly includes two sets of front and rear guide blocks (3) fixedly installed at the bottom of the upper gripper body mounting base (2). Two sets of left and right guide blocks (4) are fixedly installed at the bottom of the upper gripper body mounting base (2). There are two front and rear guide blocks (3) in one set and two left and right guide blocks (4) in one set. A front and rear positioning plate (5) is slidably installed between the two front and rear guide blocks (3), and a left and right positioning plate (6) is slidably installed between the two left and right guide blocks (4). The upper gripper body (9) is inserted through the top of the upper gripper body mounting base (2), and the upper gripper body (9) is inserted through the top of the front and rear positioning plates (5) and the left and right positioning plates (6).

2. The tool gripping mechanism on an adjustable-center broaching bed according to claim 1, characterized in that: The top of the upper gripper body mounting base (2) is provided with a mounting through hole larger than the diameter of the upper gripper body (9), and the top of the front and rear positioning plates (5) and the left and right positioning plates (6) are provided with positioning through holes that are adapted to the upper gripper body (9).

3. The tool gripping mechanism on an adjustable-center broaching bed according to claim 1, characterized in that: The front and rear positioning plates (5) have front and rear waist holes (51) on their tops, and the left and right positioning plates (6) have left and right waist holes (61) on their tops. The mounting screws on the front and rear positioning plates (5) and the left and right positioning plates (6) pass through the front and rear waist holes (51) and the left and right waist holes (61) respectively.

4. The tool gripping mechanism on an adjustable-center broaching bed according to claim 1, characterized in that: Two left-right adjusting screws (7) are threadedly connected to one side of the front and rear guide blocks (3). One end of the left-right adjusting screws (7) is in contact with one side of the left and right positioning plates (6). Both ends of the front and rear guide blocks (3) are threadedly connected to front and rear adjusting screws (8). One end of the front and rear adjusting screws (8) is in contact with one side of the front and rear positioning plates (5).

5. The tool gripping mechanism on an adjustable-center broaching bed according to claim 1, characterized in that: The top of the base of the broaching machine (1) is fixedly equipped with two lower clasps (10), and a detection mandrel (11) is inserted through the top mounting hole of the lower clasps (10).

6. The tool gripping mechanism on an adjustable-center broaching bed according to claim 5, characterized in that: The surface of the detection mandrel (11) near the top is magnetically attached to a dial indicator (12), and the probe of the dial indicator (12) is in contact with the surface of the upper gripper body (9).

7. The tool gripping mechanism on an adjustable-center broaching machine according to claim 1, characterized in that: A cylinder (13) is fixedly installed at the bottom of the left and right positioning plates (6), and two connecting side plates (14) are fixedly installed at the movable end of the cylinder (13).

8. The tool gripping mechanism for an adjustable-center broaching bed according to claim 7, characterized in that: A retainer (15) is fixedly installed between the two connecting side plates (14), and the retainer (15) is fixedly installed on the surface of the upper gripper body (9).

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