A fixture positioning pin distance adjustment mechanism

Abstract

The utility model belongs to connecting rod clamp technical field, concretely relates to a kind of fixture positioning pin distance adjusting mechanism, including base, fixed plate is set on base center line, the front surface of fixed plate is provided with several groups of fixed clamp for clamping connecting rod in parallel, the fixed mechanism for fixing connecting rod is set between the two groups of fixed clamps of adjacent, each group of fixed clamp includes the big head fixed support for fixing the big head end portion of connecting rod and is fixedly set in the front surface of fixed plate, the lower portion of big head fixed support is provided with the little head movable support for fixing the little head end portion of connecting rod, and the center distance between big head fixed support and little head movable support can be adjusted according to the length of different models of connecting rod, the big head end portion of connecting rod is fixed by big head fixed support, and the little head end portion of connecting rod is fixed according to different specifications and models by adjusting little head movable support, different specifications and models of connecting rod can be fixed, so that it adapts to processing demand, and production efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of linkage clamping technology, specifically relating to a clamping positioning pin distance adjustment mechanism. Background Technology

[0002] As a key component in power machinery such as engines, the connecting rod plays an important role in transmitting power between the reciprocating motion of the piston and the rotational motion of the crankshaft. Its machining accuracy and quality directly affect the performance, reliability and service life of the engine.

[0003] Traditional dedicated fixtures are typically designed based on the structure and dimensions of specific connecting rods. Their positioning and clamping methods are often highly targeted, making it difficult to adapt to the processing needs of connecting rods of different specifications. When companies need to develop new connecting rod products or improve existing products, the original dedicated fixtures may not be usable directly, requiring the redesign and manufacture of new fixtures. This undoubtedly prolongs the product development cycle and production preparation time, hindering companies from responding quickly to market changes. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a clamp positioning pin distance adjustment mechanism. The large end of the connecting rod is fixed by a large-end fixed support, and the small end is fixed according to different specifications and models of the connecting rod by adjusting the small-end movable support. This mechanism can fix connecting rods of different specifications and models to meet processing requirements, thus solving the problem that when developing new connecting rod products or improving existing products, the original dedicated clamps may not be directly usable, requiring the redesign and manufacture of new clamps.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clamp positioning pin distance adjustment mechanism, comprising a base, a fixing plate disposed on the center line of the base, several sets of fixing clamps for clamping connecting rods disposed side by side on the front of the fixing plate, a fixing mechanism for fixing connecting rods disposed between two adjacent sets of fixing clamps, each set of fixing clamps comprising a large-end fixed support fixedly disposed on the front of the fixing plate for fixing the large end of the connecting rod, a small-end movable support disposed below the large-end fixed support for fixing the small end of the connecting rod, the small-end movable support being able to adjust the center distance between the large-end fixed support and the small-end movable support according to different connecting rod lengths.

[0006] Preferably, the small-end movable support includes a small-end support seat movably disposed on the front side of the fixed plate, and a replaceable small-end positioning pin is disposed at the center of the small-end support seat.

[0007] Preferably, the fixed plate is provided with a sliding groove, and several bolt holes are provided on both sides of the sliding groove. The bottom of the small end support is provided with a sliding block that matches the sliding groove. The small end support is provided with a through hole that matches the bolt holes. The small end support is fixedly installed on the fixed plate by bolts.

[0008] Preferably, the large-end fixed support includes a large-end support seat fixedly mounted on the fixed plate, and the center of the large-end support seat is provided with a replaceable large-end positioning pin.

[0009] Preferably, the small-end locating pin and the large-end locating pin have locating holes in their centers, and the small-end locating pin and the large-end locating pin are fixedly installed on the small-end support and the large-end support by bolts.

[0010] Preferably, the fixing mechanism includes a rotary pressing cylinder disposed on the front side of the fixing plate, and the output end of the rotary pressing cylinder is connected to the fixing plate.

[0011] Preferably, a reinforcing support plate is provided on the back of the fixing plate.

[0012] Preferably, the base is provided with a quick-change pin.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: By fixing the large end of the connecting rod with the large end fixed support, and by adjusting the small end movable support, the small end of the connecting rod can be fixed according to different specifications and models, so as to adapt to the processing requirements, improve production efficiency and processing versatility.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description or may be learned by practice of the invention. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the installation structure of a clamp positioning pin distance adjustment mechanism; Figure 2 This is a three-dimensional structural diagram of a clamp positioning pin distance adjustment mechanism; Figure 3 This is a cross-sectional view of a clamp positioning pin distance adjustment mechanism; Figure 4 A three-dimensional structural diagram of the fixing mechanism of a clamp positioning pin distance adjustment mechanism; Figure 5 A schematic diagram of the three-dimensional structure of the large-head movable support of a clamp positioning pin distance adjustment mechanism; Figure 6 This is a schematic diagram of the three-dimensional structure of the small-end moving support of a clamp positioning pin distance adjustment mechanism.

[0016] In the diagram: 1. Base; 2. Fixing plate; 21. Sliding groove; 3. Fixing mechanism; 31. Rotary pressing cylinder; 32. Fixing pressure plate; 4. Large end fixed support; 41. Large end support seat; 42. Large end positioning pin; 5. Small end movable support; 51. Small end support seat; 511. Sliding block; 512. Through hole; 52. Small end positioning pin; 6. Positioning hole; 7. Reinforcing support plate; 8. Quick-change pin. Detailed Implementation

[0017] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0018] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a clamp positioning pin distance adjustment mechanism includes a base 1, a fixing plate 2 is arranged on the center line of the base 1, and several sets of fixing clamps for clamping connecting rods are arranged side by side on the front of the fixing plate 2. A fixing mechanism 3 for fixing the connecting rod is arranged between two adjacent sets of fixing clamps. Each set of fixing clamps includes a large end fixing support 4 fixedly arranged on the front of the fixing plate 2 for fixing the large end of the connecting rod. A small end movable support 5 for fixing the small end of the connecting rod is arranged below the large end fixing support 4. The small end movable support 5 can adjust the center distance between the large end fixing support 4 and the small end movable support 5 according to the length of different models of connecting rods.

[0019] This utility model proposes a clamp positioning pin distance adjustment mechanism, with base 1 providing a stable mounting foundation for the entire mechanism. Fixing plate 2 is positioned on the centerline of base 1 and serves as the main platform for installing other key components. Several sets of fixing clamps are arranged side-by-side on the front of fixing plate 2, used to clamp connecting rods.

[0020] The large-end fixed support 4 is fixedly mounted on the front of the fixed plate 2 to fix the large end of the connecting rod, providing stable support and a fixing point for the large end. The small-end movable support 5 is located below the large-end fixed support 4 to fix the small end of the connecting rod. The small-end movable support 5 is adjustable, allowing the center distance between the large-end fixed support 4 and the small-end movable support 5 to be adjusted according to the length of different connecting rod models, thus accommodating the fixing requirements of connecting rods of different specifications. A fixing mechanism 3 is provided between two adjacent sets of fixing clamps to further fix the connecting rod, ensuring that the connecting rod remains stable during processing or other operations, preventing displacement or shaking.

[0021] When it is necessary to fix a certain type of connecting rod, first place the connecting rod on the fixing fixture, so that the large end of the connecting rod is fixed to the large end fixed support 4. Then, according to the length of the connecting rod, adjust the position of the small end movable support 5, change the center distance between the large end fixed support 4 and the small end movable support 5, until the small end movable support 5 can stably fix the small end of the connecting rod. After the connecting rods on adjacent fixing fixtures have been initially fixed, the fixing mechanism 3 between the two sets of adjacent fixing fixtures is used to fix the connecting rod again, enhance the stability of the connecting rod, prevent it from moving in subsequent operations, and thus meet the positioning and fixing requirements of different types of connecting rods in the processing, testing and other processes.

[0022] Combination Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the small-end movable support 5 includes a small-end support seat 51 movably disposed on the front side of the fixed plate 2, and a replaceable small-end positioning pin 52 is disposed at the center of the small-end support seat 51.

[0023] Specifically, the small end support 51 is movably mounted on the front of the fixed plate 2. The small end support 51 can move within a certain range on the front of the fixed plate 2, providing a basis for adjusting the center distance between the large end fixed support 4 and the small end movable support 5, so as to accommodate the length differences of different models of connecting rods.

[0024] The small end positioning pin 52 is located at the center of the small end support 51. The small end positioning pin 52 is replaceable, allowing the appropriate specification of the small end positioning pin 52 to be replaced according to the specific structure, size, and other characteristics of the small end of different models of connecting rods, thereby improving the adaptability of the entire clamp positioning pin distance adjustment mechanism to various models of connecting rods.

[0025] When different types of connecting rods need to be fixed, since the lengths of the connecting rods are different, after the large-end fixed support 4 fixes the large end of the connecting rod, the position of the small-end movable support 5 needs to be adjusted according to the length of the connecting rod. At this time, by moving the small-end support 51, which is movably set on the front of the fixed plate 2, the distance between the small-end support 51 and the large-end fixed support 4 is changed, thereby adjusting the center distance between the large-end fixed support 4 and the small-end movable support 5 to match the current length of the connecting rod.

[0026] Once the small end support 51 is moved to the appropriate position, a small end locating pin 52 that matches the current small end of the connecting rod is selected and installed at the center of the small end support 51. The small end of the connecting rod contacts the small end locating pin 52, which, with its precise shape and size, accurately positions the small end of the connecting rod, preventing horizontal movement. Simultaneously, the large end fixing support 4, along with the further reinforcement from the fixing mechanism 3 between adjacent fixing fixtures, ensures stable fixing of the connecting rod on the fixture, meeting the accuracy requirements for connecting rod positioning during subsequent processing and inspection.

[0027] Combination Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, a sliding groove 21 is provided on the fixed plate 2, and several bolt holes are provided on both sides of the sliding groove 21. A sliding block 511 matching the sliding groove 21 is provided at the bottom of the small end support 51. A through hole 512 matching the bolt hole is provided on the small end support 51. The small end support 51 is fixedly installed on the fixed plate 2 by bolts.

[0028] Specifically, the fixed plate 2 is provided with a sliding groove 21, which provides a track for the movement of the small end support 51. Several bolt holes are distributed on both sides of the sliding groove 21. These bolt holes are used to cooperate with the components on the small end support 51 to fix the small end support 51.

[0029] The bottom of the small-end support 51 is provided with a sliding block 511 that matches the sliding groove 21 on the fixed plate 2. The sliding block 511 can be embedded in the sliding groove 21, so that the small-end support 51 can slide smoothly along the direction of the sliding groove 21. The small-end support 51 is also provided with a through hole 512 that matches the bolt hole on the fixed plate 2. When the small-end support 51 is moved to a suitable position, the small-end support 51 can be firmly fixed to the fixed plate 2 by bolts passing through the through hole 512 and the bolt hole.

[0030] Combination Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the large-end fixed support 4 includes a large-end support seat 41 fixedly mounted on the fixed plate 2, and a replaceable large-end positioning pin 42 is provided at the center of the large-end support seat 41.

[0031] Specifically, the big end support 41 is fixedly mounted on the fixed plate 2. The big end support 41 is designed to adapt to the shape and size of the connecting rod big end, ensuring good contact and support. The big end locating pin 42 is located at the center of the big end support 41. The big end locating pin 42 is replaceable, and a suitable specification of big end locating pin 42 can be selected and installed according to the specific structure, size, hole diameter, and other characteristics of different models of connecting rod big ends, so that the big end fixed support 4 can be adapted to various models of connecting rods.

[0032] Combination Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the small-end positioning pin 52 and the large-end positioning pin 42 have positioning holes 6 in their centers. The small-end positioning pin 52 and the large-end positioning pin 42 are fixedly installed on the small-end support 51 and the large-end support 41 by bolts.

[0033] Specifically, both the small-end locating pin 52 and the large-end locating pin 42 have locating holes 6 at their center positions. The small-end locating pin 52 is used to mate with the small end of the connecting rod to position the small end; the large-end locating pin 42 mates with the large end of the connecting rod to position the large end. The small-end support 51 secures the small-end locating pin 52 with bolts. The large-end support 41 securely installs the large-end locating pin 42 with bolts.

[0034] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the fixing mechanism 3 includes a rotary pressing cylinder 31 disposed on the front of the fixing plate 2, and the output end of the rotary pressing cylinder 31 is connected to the fixing plate 32.

[0035] Specifically, the rotary pressing cylinder 31 is located on the front of the fixed plate 2. The fixed pressure plate 32 is connected to the output end of the rotary pressing cylinder 31.

[0036] When the fixing mechanism 3 is not activated, the rotary pressing cylinder 31 is in its initial position, and the fixing plate 32 is in the raised state. When it is necessary to fix the connecting rod, the rotary pressing cylinder 31 is activated. The output end of the rotary pressing cylinder 31 drives the fixing plate 32 to rotate. The fixing plate 32 rotates to a suitable position so that it can accurately cover the part of the connecting rod that needs to be fixed, preparing for the subsequent pressing action. After the rotation action is completed, the rotary pressing cylinder 31 is controlled to drive the fixing plate 32 to move downward in a straight line, i.e., the pressing action. When the pressure reaches the set value, the fixing plate 32 presses the connecting rod tightly against the fixing plate 2 or other support structure, achieving a firm fixation of the connecting rod. At this time, the connecting rod is effectively restricted in both the horizontal and vertical directions, and cannot move or rotate freely, providing stable conditions for subsequent processing, inspection and other operations.

[0037] Combination Figure 1 , Figure 2 and Figure 3 As shown, a reinforcing support plate 7 is provided on the back of the fixing plate 2.

[0038] Specifically, the reinforcing support plate 7 is located on the back of the fixed plate 2. The reinforcing support plate 7 commonly takes the shape of a rectangle or triangle, and may be one or more in number, depending on the magnitude and distribution of the load borne by the fixed plate 2. The reinforcing support plate 7 and the fixed plate 2 are typically fixed together by welding, bolting, or other methods to ensure a tight connection and joint resistance to external forces.

[0039] Combination Figure 1 , Figure 2 and Figure 3 As shown, a quick-change pin 8 is provided on the base 1.

[0040] Specifically, the quick-change pin 8 is a positioning and connecting element with a quick-change function that is installed on the base 1. The quick-change pin 8 is generally cylindrical in shape and can be accurately inserted into the mating hole to achieve precise positioning; the other end is designed with easy-to-operate parts, such as handles or threads, to facilitate installation and disassembly.

[0041] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A clamp positioning pin distance adjustment mechanism, comprising a base (1), wherein a fixing plate (2) is disposed on the center line of the base (1), characterized in that, The front of the fixing plate (2) is provided with several sets of fixing clamps for clamping the connecting rod. Between two adjacent sets of fixing clamps, there is a fixing mechanism (3) for fixing the connecting rod. Each set of fixing clamps includes a large end fixing support (4) fixedly installed on the front of the fixing plate (2) for fixing the large end of the connecting rod. Below the large end fixing support (4) is a small end movable support (5) for fixing the small end of the connecting rod. The small end movable support (5) can adjust the center distance between the large end fixing support (4) and the small end movable support (5) according to the length of different models of connecting rods.

2. The clamp positioning pin distance adjustment mechanism according to claim 1, characterized in that, The small head movable support (5) includes a small head support seat (51) movably disposed on the front of the fixed plate (2), and a replaceable small head positioning pin (52) is provided at the center of the small head support seat (51).

3. The clamp positioning pin distance adjustment mechanism according to claim 2, characterized in that, The fixed plate (2) is provided with a sliding groove (21), and several bolt holes are provided on both sides of the sliding groove (21). The bottom of the small end support (51) is provided with a sliding block (511) that matches the sliding groove (21). The small end support (51) is provided with a through hole (512) that matches the bolt hole. The small end support (51) is fixedly installed on the fixed plate (2) by bolts.

4. A clamp positioning pin distance adjustment mechanism according to any one of claims 1 or 3, characterized in that, The large-end fixed support (4) includes a large-end support seat (41) fixedly mounted on the fixed plate (2), and a replaceable large-end positioning pin (42) is provided at the center of the large-end support seat (41).

5. The clamp positioning pin distance adjustment mechanism according to claim 4, characterized in that, The small-end positioning pin (52) and the large-end positioning pin (42) have positioning holes (6) in the center. The small-end positioning pin (52) and the large-end positioning pin (42) are fixedly installed on the small-end support (51) and the large-end support (41) by bolts.

6. The clamp positioning pin distance adjustment mechanism according to claim 5, characterized in that, The fixing mechanism (3) includes a rotary pressing cylinder (31) disposed on the front of the fixing plate (2), and the output end of the rotary pressing cylinder (31) is connected to the fixing plate (32).

7. The clamp positioning pin distance adjustment mechanism according to claim 6, characterized in that, A reinforcing support plate (7) is provided on the back of the fixing plate (2).

8. The clamp positioning pin distance adjustment mechanism according to claim 7, characterized in that, A quick-change pin (8) is provided on the base (1).

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