Pin machining clamp

Abstract

The utility model relates to the technical field of pin machining clamps, and discloses a pin machining clamp which comprises a base, a clamp body, a cushion block, a first fixing mechanism and a second fixing mechanism, the base comprises a supporting plate, an overhead space is arranged below the supporting plate, and a through hole and a limiting caulking groove are formed in the supporting plate; the clamp body is detachably embedded in the limiting caulking groove of the supporting plate, an insertion hole allowing a to-be-machined pin to be inserted is formed in the clamp body, and the insertion hole vertically penetrates through the clamp body and communicates with the overhead space; the cushion block is arranged in the overhead space and is supported below the pin to be machined; the first fixing mechanism is used for fixing the clamp body on the base; and the second fixing mechanism is used for fixing the to-be-processed pin in the insertion hole. According to the machining clamp, pins of all specifications can be machined on the base under the same machining coordinate system, the machining coordinate system does not need to be aligned again during machining, labor hour loss is reduced, the rejection rate of cutters and workpieces is reduced, and potential quality hazards of size difference caused by frequent arrangement of the machining coordinate system are eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of pin processing fixtures, in particular to a pin processing fixture. Background Art

[0002] There are multiple pins on the casting mold of the engine block, and these pins have various shapes and structures. Currently, when processing the pins of these casting molds, multiple pins are generally arranged and fixed on a fixture, and then the pins on the fixture are processed into a preset structure through processing equipment; among them, since the pins on the fixture have many specifications and quantities, these pins are not processed in the same coordinate system, and the processing coordinate system needs to be aligned many times during processing, which results in a lot of man-hours; in addition, frequent alignment of the processing coordinate system is prone to errors, and it is easy for the tool to be broken and scrapped due to excessive cutting, and the workpiece to be scrapped due to processing misalignment, thereby increasing the processing cost; and, frequent alignment of the processing coordinate system is prone to quality risks such as large processing size differences in the workpiece. Utility Model Content

[0003] In view of this, the utility model proposes a pin processing fixture to solve the problem of frequently aligning the processing coordinate system during pin processing.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A pin processing fixture, comprising:

[0006] A base, the base comprising a support plate, an overhead space is provided below the support plate, a through hole is provided on the support plate and a limiting groove is provided on the top of the support plate, and the position of the limiting groove corresponds to the through hole in the vertical direction;

[0007] A clamping body, the clamping body is detachably embedded in the limiting embedding groove of the support plate, the bottom of the limiting embedding groove has a supporting portion for supporting the clamping body, the clamping body is provided with a plug hole for inserting the pin to be processed, the plug hole vertically penetrates the clamping body and is connected to the overhead space; the outer periphery of the part of the clamping body embedded in the limiting embedding groove has a contour matching surface, and the contour matching surface is consistent with the inner wall contour of the limiting embedding groove;

[0008] A cushion block, which is arranged in the overhead space and below the support plate;

[0009] A first fixing mechanism, used for detachably connecting the clamp body to the support plate; and

[0010] The second fixing mechanism is used to fix the pin to be processed in the insertion hole.

[0011] As a further optional solution, the first fixing mechanism includes:

[0012] At least two first connection holes are arranged on the base;

[0013] at least two second connection holes provided on the clamp body, the second connection holes corresponding to the first connection holes in position, one of the first connection hole and the second connection hole being a threaded hole, and the other being a smooth hole; and

[0014] A first bolt is inserted into the first connection hole and the second connection hole to detachably connect the clamp body to the base.

[0015] As a further optional solution, the width of the limiting groove is greater than the width of the through hole.

[0016] As a further optional solution, the second fixing mechanism includes:

[0017] A third connecting hole, which is a threaded hole, is provided on a side surface of the clamp body, and is connected to the insertion hole; and

[0018] A second bolt, wherein the second bolt is threadedly connected to the third connecting hole and is used to fix the pin to be processed in the insertion hole.

[0019] As a further optional solution, an adjustment hole is provided on the side of the support plate, and the axial projection range of the adjustment hole covers the third connecting hole.

[0020] As a further optional solution, the base also includes a bottom plate arranged below the support plate, a connecting plate is provided between the bottom plate and the support plate, and the overhead space is formed between the bottom plate and the support plate; a locking hole is provided on the bottom plate, and the pad is connected to the locking hole by a third bolt to be fixed to the bottom plate.

[0021] As a further optional solution, the support plate, the connecting plate and the bottom plate are connected by bolts, the bottom plate is provided with a first slot, and the bottom of the connecting plate is clamped in the first slot.

[0022] As a further optional solution, a second slot is provided on the bottom plate, and a block is protruding from the bottom of the cushion block and is locked in the second slot.

[0023] As a further optional solution, a reference hole is provided on the base.

[0024] As a further alternative, the insertion hole has an inner wall profile that matches the outer wall profile of the pin to be processed.

[0025] Compared with the prior art, the pin processing fixture of the present application has the following beneficial effects: a corresponding clamping body is configured for pins of corresponding specifications, and the clamping body is detachably arranged on the base, and the base and the processing equipment correspond to the processing coordinate system, and pins of all specifications are processed on the base under the same processing coordinate system, so that there is no need to re-align the processing coordinate system during processing, which reduces the loss of working hours, reduces the scrap rate of tools and workpieces, and eliminates the quality risks of size differences caused by frequent setting of the processing coordinate system. In addition, the cushion block is arranged at the bottom of the pin to be processed, which can provide support for the pin to be processed and improve the stability of the pin to be processed during processing; the cushion block can be used to realize the rapid positioning of the pin to be processed in the vertical direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a pin processing fixture according to an embodiment of the utility model;

[0027] Figure 2 It is an exploded schematic diagram of a pin processing fixture according to an embodiment of the utility model;

[0028] Figure 3 It is an exploded schematic diagram of the clamping body and the pin to be processed in the embodiment of the utility model;

[0029] Figure 4 It is an exploded schematic diagram of the base in the embodiment of the utility model;

[0030] Figure 5 It is a cross-sectional schematic diagram of a pin processing fixture according to an embodiment of the utility model.

[0031] In the figure, 100, pin to be processed;

[0032] 1. Base; 11. Support plate; 111. Perforation; 112. Limiting groove; 113. Adjustment hole; 114. Reference hole; 12. Overhead space; 13. Connecting plate; 14. Bottom plate; 141. Lock hole; 142. First slot; 143. Second slot;

[0033] 2. Clamp body; 21. Socket; 22. Profile mating surface;

[0034] 3. First fixing mechanism; 31. First connecting hole; 32. Second connecting hole; 33. First bolt;

[0035] 4. second fixing mechanism; 41. third connecting hole; 42. second bolt;

[0036] 5. Spacer; 51. Third bolt. DETAILED DESCRIPTION

[0037] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0038] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] refer to Figure 1-5 In one embodiment of the utility model, a pin processing fixture includes a base 1, a clamp body 2, a cushion block 5, a first fixing mechanism 3 and a second fixing mechanism 4;

[0042] The base 1 includes a support plate 11, and an overhead space 12 is provided below the support plate 11. A through hole 111 is provided on the support plate 11, and a limiting embedding groove 112 is recessed on the top of the support plate 11, and the position of the limiting embedding groove 112 corresponds vertically to the through hole 111; the clamping body 2 is detachably embedded in the limiting embedding groove 112 of the support plate 11, and the bottom of the limiting embedding groove 112 has a supporting portion (not marked in the figure) supporting the clamping body 2, and the clamping body 2 is provided with a socket 21 for inserting the pin 100 to be processed, and the socket 21 vertically penetrates the clamping body 2 and is connected to the overhead space. The processing pin 100 is connected to the overhead space 12; one end of the processing pin 100 is the processing end, and the other end of the processing pin 100 passes through the through hole 111 and extends to the overhead space 12; the outer periphery of the part of the clamp body 2 embedded in the limiting embedding groove 112 has a contour matching surface 22, and the contour matching surface 22 is consistent with the inner wall contour of the limiting embedding groove 112; the cushion block 5 is arranged in the overhead space 12 and is located below the support plate 11; the first fixing mechanism 3 is used to detachably connect the clamp body 2 to the base 1; the second fixing mechanism 4 is used to fix the processing pin 100 in the socket 21.

[0043] Specifically, according to the model / specification of the pin 100 to be processed, a corresponding clamp 2 is prepared for it, the shape structure of the socket 21 on the clamp 2 matches the model / specification of the pin 100 to be processed, the pin 100 to be processed is inserted in the socket 21, and can be fixed by the second fixing mechanism 4; and the clamp 2 can be detachably fixed to the base 1 by the first fixing mechanism 3, wherein the clamp 2 is configured with multiple according to the number of pins 100 to be processed, and the base 1 can be configured with only one, when processing different pins 100 to be processed, it is only necessary to install the corresponding clamp 2 on the base 1; after all the clamps 2 are installed in the limiting groove, all the pins 100 to be processed are processed in the same processing coordinate system, so that there is no need to readjust the processing coordinate system during processing, which reduces the loss of working time, reduces the scrap rate of tools and workpieces, and eliminates the quality risks of dimensional differences caused by frequent setting of the processing coordinate system.

[0044] Among them, the cushion block 5 is arranged at the bottom of the pin 100 to be processed, which can provide support for the pin 100 to be processed and improve the stability of the pin 100 to be processed during processing; in addition, since different pins 100 to be processed may have different lengths, the cushion block 5 can also be used for the rapid vertical positioning of the pin to be processed. By setting cushion blocks 5 of different heights corresponding to the specifications of the pin 100 to be processed, the pin 100 to be processed can be quickly adjusted to a preset height position when it is inserted into the socket 21, and then the second fixing mechanism 4 is further used to fix the pin 100 to be processed.

[0045] The limiting embedding groove 112 can realize rapid positioning, ensuring that the installation positions of the plurality of clamps 2 on the base 1 are the same and accurate, thereby improving assembly efficiency.

[0046] exist Figure 1 and Figure 2 In the structure shown, the position of the limiting embedding groove 112 corresponds vertically to the position of the through hole 111, and the entire clamp body 2 is embedded in the limiting embedding groove 112. The upper surface of the clamp body 2 in the figure is flush with the upper surface of the support plate 11. In fact, whether they are flush has no effect on the processing of the processing pin 100. For example, the clamp body 2 can be only partially embedded in the limiting embedding groove 112, and partially protrude from the upper surface of the support plate 11; but in this embodiment, by setting the depth of the limiting embedding groove 112 to be the same as the thickness of the clamp body 2, it is convenient for workers to observe with the naked eye whether the upper surface of the clamp body 2 is flush with the upper surface of the support plate 11, and quickly judge whether the clamp body 2 is installed in place, which is convenient for quick assembly.

[0047] It should be noted that a plurality of pins 100 to be processed in a processing coordinate system can be arranged on the clamp 2 at the same time. Figure 1-3 As shown, the clamp body 2 is provided with two insertion holes 21 , and the two insertion holes 21 are respectively corresponding to insert different pins 100 to be processed. The two pins 100 to be processed in the figure are processed in the same processing coordinate system, so they can be set on the clamp body 2 at the same time.

[0048] In some embodiments, the socket has an inner wall profile that matches the outer wall profile of the pin to be processed. In this way, the pin to be processed cannot rotate circumferentially in the socket, and the second fixing mechanism only needs to fix the height position of the pin to be processed.

[0049] In some embodiments, Figure 1 and Figure 2 As shown, in order to facilitate the alignment of the base 1 and the processing equipment in the processing coordinate system, a reference hole 114 is provided on the base 1.

[0050] In some embodiments, Figure 2 As shown, the width of the limiting embedding groove is greater than the width of the through hole, thereby forming the supporting portion.

[0051] In some embodiments, Figure 2 and Figure 3As shown, the first fixing mechanism 3 includes at least two first connection holes 31 provided on the base 1, at least two second connection holes 32 provided on the clamping body 2, and a first bolt 33; the second connection holes 32 correspond to the first connection holes 31, and the first bolt passes through the first connection holes 31 and the second connection holes 32 to detachably connect the clamping body 2 to the base 1. One of the first connection hole and the second connection hole is a threaded hole, and the other is a smooth hole, and the first bolt passes through the smooth hole and is then threadedly connected to the other threaded hole.

[0052] Among them, the first fixing mechanism 3 adopts a bolt fixing method to fix the clamping body 2 on the base 1, which is simple to operate and easy to assemble and disassemble; and the first connecting hole 31 and the second connecting hole 32 can also play a positioning role, so that the installation positions of different clamping bodies 2 on the base 1 are the same and accurate, ensuring that different pins 100 to be processed can be accurately processed in the same processing coordinate system, avoiding processing misalignment and the like.

[0053] In some embodiments, Figure 2 and Figure 3 As shown, the second fixing mechanism 4 includes a third connection hole 41 and a second bolt 42. The third connection hole is a threaded hole. The third connection hole 41 is opened on the side of the clamp body 2, and the third connection hole 41 is connected to the insertion hole 21. The second bolt 42 is threadedly connected to the third connection hole 41. One end of the second bolt 42 abuts against the pin 100 to be processed in the insertion hole 21 to achieve the fixation of the pin 100 to be processed in the insertion hole 21. In short, the second bolt 42 can be rotated to move the second bolt 42 axially along the third connection hole 41. When the end of the second bolt 42 squeezes the pin 100 to be processed in the insertion hole 21, the pin 100 to be processed can be fixed in the insertion hole 21; accordingly, when the pin 100 to be processed needs to be removed, the second bolt 42 can be rotated so that it does not contact the pin 100 to be processed.

[0054] In some embodiments, Figure 1 and Figure 2As shown, the side of the support plate 11 is provided with an adjustment hole 113, and the axial projection range of the adjustment hole 113 covers the third connection hole 41. In order to make the bottom of the pin 100 to be processed close to the cushion block 5 and realize the stable support of the cushion block 5 on the pin 100 to be processed, in this embodiment, the pin 100 to be processed can be pre-tightened in the insertion hole 21, and then the clamp body 2 is set on the base 1. At this time, the second bolt 42 can be adjusted through the adjustment hole 113 using a tool such as a screwdriver. After the bottom of the pin 100 to be processed is close to the cushion block 5, the second bolt 42 is screwed to fix the pin 100 to be processed; wherein, the adjustment hole 113 provides an escape space for adjusting the second bolt 42.

[0055] In some embodiments, Figure 2 and Figure 4 As shown, the base 1 includes a bottom plate 14 arranged below the support plate 11, a connecting plate 13 is provided between the bottom plate 14 and the support plate 11, and the overhead space 12 is formed between the bottom plate 14 and the support plate 11; in this embodiment, the connecting plates 13 are provided with two pieces, and the two connecting plates 13 and the support plate 11 form a door-shaped structure, and the cushion block 5 can be placed between the two connecting plates 13; and in order to ensure that the cushion block 5 is stably positioned in the overhead space 12, a locking hole 141 is provided on the bottom plate 14, and the cushion block 5 is connected to the locking hole 141 by a third bolt 51 to be fixed to the bottom plate 14.

[0056] The above scheme is specific, such as Figure 4 As shown, the support plate 11, the connecting plate 13 and the bottom plate 14 can be connected by bolts, and the bottom plate 14 is provided with a first slot 142, and the bottom of the connecting plate 13 is clamped in the first slot 142. The connecting plate 13 is clamped in the first slot 142 to improve the assembly efficiency of the connecting plate 13 and the structural stability of the connecting plate 13 arranged on the bottom plate 14.

[0057] Furthermore, a second card slot 143 may be provided on the base plate 14 , and a protruding card block (not shown) may be provided at the bottom of the cushion block 5 , and the card block may be clamped in the second card slot 143 , so as to further increase the stability of the cushion block 5 provided on the base plate 14 .

[0058] The working process of the utility model is as follows: insert the pin 100 to be processed into the insertion hole 21 of the clamp body 2, and use the second fixing mechanism 4 to pre-tighten and fix the pin 100 to be processed; then fix the clamp body 2 to the base 1 through the first fixing mechanism 3, and after the clamp body 2 is installed in place, adjust the position of the pin 100 to be processed in the insertion hole 21 so that the bottom of the pin 100 to be processed is tightly attached to the cushion block 5, and then use the second fixing mechanism 4 to fix the pin 100 to be processed, and then use the processing equipment to process the pin 100 to be processed; after the processing is completed, remove the clamp body 2 from the base 1, install other pins 100 to be processed and the corresponding clamp body 2, and start new processing.

[0059] In summary, the embodiment of the utility model provides a pin processing fixture, which can realize the process of processing pins of various different specifications without the need to align the processing coordinate system, thereby reducing labor time loss, reducing the scrap rate of tools and workpieces, and eliminating the quality risks of dimensional differences caused by frequent setting of the processing coordinate system.

[0060] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A pin processing fixture, characterized in that: include: A base, the base comprising a support plate, an overhead space is provided below the support plate, a through hole is provided on the support plate and a limiting groove is provided on the top of the support plate, and the position of the limiting groove corresponds to the through hole in the vertical direction; A clamping body, the clamping body is detachably embedded in the limiting embedding groove of the support plate, the bottom of the limiting embedding groove has a supporting portion for supporting the clamping body, the clamping body is provided with a plug hole for inserting the pin to be processed, the plug hole vertically penetrates the clamping body and is connected to the overhead space; the outer periphery of the part of the clamping body embedded in the limiting embedding groove has a contour matching surface, and the contour matching surface is consistent with the inner wall contour of the limiting embedding groove; A cushion block, which is arranged in the overhead space and below the support plate; A first fixing mechanism, used for detachably connecting the clamp body to the support plate; as well as The second fixing mechanism is used to fix the pin to be processed in the insertion hole.

2. The pin processing fixture according to claim 1, characterized in that: The first fixing mechanism comprises: At least two first connection holes are arranged on the base; at least two second connection holes provided on the clamp body, the second connection holes corresponding to the first connection holes in position, one of the first connection hole and the second connection hole being a threaded hole, and the other being a smooth hole; and A first bolt is inserted into the first connection hole and the second connection hole to detachably connect the clamp body to the support plate.

3. The pin processing jig according to claim 1, characterized in that: The width of the limiting embedding groove is greater than the width of the through hole.

4. The pin processing jig according to claim 1, characterized in that: The second fixing mechanism comprises: A third connecting hole, which is a threaded hole, is provided on a side surface of the clamp body, and is connected to the insertion hole; and A second bolt, wherein the second bolt is threadedly connected to the third connecting hole and is used to fix the pin to be processed in the insertion hole.

5. The pin processing jig according to claim 4, characterized in that: An adjustment hole is provided on the side of the support plate, and the axial projection range of the adjustment hole covers the third connecting hole.

6. The pin processing jig according to claim 1, characterized in that: The base also includes a bottom plate arranged below the support plate, a connecting plate is provided between the bottom plate and the support plate, and the overhead space is formed between the bottom plate and the support plate; a locking hole is provided on the bottom plate, and the cushion block is connected to the locking hole by a third bolt to be fixed on the bottom plate.

7. The pin processing jig according to claim 6, characterized in that: The support plate, the connecting plate and the bottom plate are connected by bolts. The bottom plate is provided with a first slot, and the bottom of the connecting plate is clamped in the first slot.

8. The pin processing jig according to claim 6, characterized in that: The bottom plate is provided with a second card slot, and the bottom of the cushion block is protrudingly provided with a card block that is locked in the second card slot.

9. The pin processing fixture according to any one of claims 1 to 8, characterized in that: A reference hole is provided on the base.

10. The pin processing jig according to claim 9, characterized in that: The insertion hole has an inner wall profile that matches the outer wall profile of the pin to be processed.

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