A fixture for bar flattening

Abstract

The utility model relates to the technical field of clamp, provide bar stock grinding clamp, bar stock is ladder axle structure, including big diameter department and small diameter department, bar stock grinding clamp includes clamping block and base. Along the vertical direction, clamping block includes upper end surface and lower end surface, and clamping block is provided with insertion hole and flow guide groove, and insertion hole is provided along the vertical direction and penetrates upper end surface and lower end surface, and the aperture of insertion hole is less than the maximum diameter of big diameter department, and small diameter department is inserted in insertion hole, and big diameter department protrudes in upper end surface, and flow guide groove is provided in lower end surface, and flow guide groove is communicated insertion hole and at least one side end surface of clamping block in horizontal direction, base is fixed with clamping block along the vertical direction, and the lower end surface of base and clamping block is close, and one end of small diameter department is in abutment with base. Thus, it is convenient to plug and change bar stock, and the cleaning frequency of clamping block and base can be reduced, and the operation time is prolonged, and the operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, and in particular to a clamping fixture for grinding bar stock. Background Technology

[0002] In the cutting tool manufacturing industry, the precision and quality of the large-head drill, a commonly used drilling tool, are crucial to the entire production process. Surface grinding is a key step in the production of large-head drills. Its purpose is to ensure the accurate length of the drill bit stock, thereby guaranteeing that the cutting edge of the drill bit has good flatness and sharpness when performing subsequent grooving processes, thus ensuring the efficiency and accuracy of drilling operations.

[0003] However, in the current surface grinding process of large-head drills, the operation of traditional fixtures is quite cumbersome, requiring a lot of manpower and time for clamping and adjustment. During the processing, this undoubtedly increases production costs and reduces production efficiency, making it difficult to meet the needs of modern manufacturing for efficient and high-precision production.

[0004] Therefore, there is an urgent need for a jig for grinding bar stock to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a jig for grinding bar stock, which enables quick replacement of bar stock within the jig and improves work efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A jig for grinding bar stock, wherein the bar stock has a stepped shaft structure, including a large diameter section and a small diameter section, and the aforementioned jig for grinding bar stock includes:

[0008] A clamping block, in a vertical direction, includes an upper end face and a lower end face. The clamping block has an insertion hole and a flow guide groove. The insertion hole is opened in the vertical direction and penetrates the upper end face and the lower end face. The diameter of the insertion hole is smaller than the maximum diameter of the large diameter portion. The small diameter portion is inserted into the insertion hole, and the large diameter portion extends out of the upper end face. The flow guide groove is opened on the lower end face and connects the insertion hole with at least one end face of the clamping block in the horizontal direction.

[0009] The base is fixed to the clamping block along the vertical direction. The base is in close contact with the lower end face of the clamping block, and one end of the small diameter portion abuts against the base.

[0010] As a preferred technical solution for the above-mentioned bar stock grinding fixture, it also includes a threaded fastener, and the base and the clamping block are connected by the threaded fastener.

[0011] As a preferred technical solution for the above-mentioned bar stock grinding fixture, multiple threaded fasteners are provided, and the multiple threaded fasteners are evenly distributed along the edges of the base and the clamping block.

[0012] As a preferred technical solution for the above-mentioned bar stock grinding fixture, the base or the clamping block is provided with a countersunk hole, and the nut of the threaded fastener is inserted into the countersunk hole.

[0013] As a preferred technical solution for the above-mentioned clamp for grinding bar stock, multiple insertion holes are provided, and the multiple insertion holes are arranged in parallel.

[0014] As a preferred technical solution for the above-mentioned bar stock grinding fixture, multiple guide grooves are provided, and each guide groove is connected to at least one of the above-mentioned insertion holes.

[0015] As a preferred technical solution for the above-mentioned bar stock grinding fixture, the plurality of the above-mentioned guide grooves include a first guide groove and a second guide groove, wherein the outlet of the first guide groove and the outlet of the second guide groove are formed on different end faces of the clamping block.

[0016] As a preferred technical solution for the above-mentioned bar stock grinding fixture, the first guide groove and the second guide groove are connected at the above-mentioned insertion hole.

[0017] As a preferred technical solution for the above-mentioned jig for grinding bar stock, the above-mentioned insertion hole is a stepped hole, including a large-diameter section and a small-diameter section that are interconnected and coaxially opened. One end of the small-diameter section passes through the above-mentioned upper end face, and one end of the above-mentioned large-diameter section passes through the above-mentioned lower end face. The axial length of the small-diameter section is greater than the axial length of the large-diameter section.

[0018] As a preferred technical solution for the above-mentioned bar stock grinding fixture, an annular protrusion is formed on the upper end surface. The annular protrusion is formed at the end of the insertion hole and is coaxially arranged with the insertion hole. In the vertical direction, the projection of the annular protrusion is located within the projection of the large diameter portion.

[0019] The beneficial effects of this utility model are:

[0020] This application provides a jig for grinding bar stock. The bar stock has a stepped shaft structure, including a large diameter portion and a small diameter portion. The jig for grinding bar stock includes a clamping block and a base. Vertically, the clamping block includes an upper end face and a lower end face. The clamping block has an insertion hole and a guide groove. The insertion hole is vertically oriented and extends through both the upper and lower end faces. The diameter of the insertion hole is smaller than the maximum diameter of the large diameter portion. The small diameter portion is inserted into the insertion hole, and the large diameter portion extends out of the upper end face. The guide groove is located on the lower end face and connects the insertion hole and at least one end face of the clamping block in the horizontal direction. The base is fixed vertically to the clamping block, and the base is in close contact with the lower end face of the clamping block. One end of the small diameter portion abuts against the base.

[0021] The axial end face of the large-diameter section of the bar stock, facing away from the small-diameter section, is the surface to be ground. Before use, the base and clamping block are fixed, with the base covering the vertical opening of the guide groove. The bar stock is inserted vertically into the insertion hole of the clamping block, with the large-diameter section outside the insertion hole and the end face of the small-diameter section facing away from the large-diameter section abutting against the base. Since the distance between the upper end face of the base and the clamping block is consistent in the vertical direction, the base supports the bar stock, ensuring that the height of the large-diameter section extending out of the clamping block is consistent, thus maintaining a consistent length of the large-diameter section extending out of the clamping block. Furthermore, during grinding, coolant is sprayed onto the large-diameter section, and debris is also generated during grinding. Coolant and debris enter the insertion hole, making it difficult to pull out the bar stock. This application addresses this problem by incorporating a flow guide channel formed on the lower end face of the clamping block. The channel connects the bottom of the insertion hole to the outside of the clamping block. Under gravity, coolant and debris can enter the flow guide channel along the insertion hole and then exit the clamping block. This facilitates the insertion and removal of bar stock, reduces the frequency of cleaning the clamping block and base, thereby extending operation time and improving work efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the jig for grinding bar stock provided in this embodiment of the utility model;

[0024] Figure 2 This is a cross-sectional view of the jig for grinding bar stock provided in this embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the clamping block provided in an embodiment of the present utility model;

[0026] Figure 4 This is a cross-sectional view of the clamping block provided in an embodiment of this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the base provided in an embodiment of the present utility model;

[0028] Figure 6 This is a cross-sectional view of the base provided in an embodiment of the present utility model;

[0029] Figure 7 This is a schematic diagram of the structure of the bar stock provided in this embodiment of the utility model.

[0030] In the picture:

[0031] X, vertical direction;

[0032] 100. Fixture for grinding bar stock;

[0033] 1. Clamping block; 11. Upper end face; 12. Lower end face; 13. Insertion hole; 131. Large diameter section; 132. Small diameter section; 14. Guide groove; 15. Threaded hole;

[0034] 2. Base; 21. Light hole; 22. Countersunk hole;

[0035] 200. Bar stock; 201. Large diameter part; 202. Small diameter part; 203. Surface to be ground. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0040] like Figures 1 to 7 As shown, this application provides a jig 100 for grinding bar stock. The bar stock 200 has a stepped shaft structure, including a large diameter portion 201 and a small diameter portion 202. The jig 100 for grinding bar stock includes a clamping block 1 and a base 2. Along the vertical direction X, the clamping block 1 includes an upper end face 11 and a lower end face 12. The clamping block 1 has an insertion hole 13 and a guide groove 14. The insertion hole 13 is opened along the vertical direction X and passes through the upper end face 11 and the lower end face 12. The diameter of the insertion hole 13 is smaller than the maximum diameter of the large diameter portion 201. The small diameter portion 202 is inserted into the insertion hole 13. The large diameter portion 201 extends out of the upper end face 11. The guide groove 14 is opened on the lower end face 12 and connects the insertion hole 13 and the clamping block 1 on at least one side end face in the horizontal direction. The base 2 is fixed to the clamping block 1 along the vertical direction X. The base 2 is in close contact with the lower end face 12 of the clamping block 1, and one end of the small diameter portion 202 abuts against the base 2.

[0041] The axial end face of the large diameter portion 201 of the bar stock 200, facing away from the small diameter portion 202, is the grinding surface 203. Before use, the base 2 and the clamping block 1 are fixed, with the base 2 blocking the opening of the guide groove 14 in the vertical direction X. The bar stock 200 is inserted into the insertion hole 13 of the clamping block 1 in the vertical direction X, with the large diameter portion 201 of the bar stock 200 located outside the insertion hole 13. The end face of the small diameter section 132, facing away from the large diameter section 131, abuts against the base 2. Since the distance between the base 2 and the upper end face 11 of the clamping block 1 is consistent in the vertical direction X, the base 2 supports the bar stock 200, ensuring that the height of the large diameter section 131 of the bar stock 200 extending out of the clamping block 1 is consistent, thus ensuring that the length of the large diameter portion 201 extending out of the clamping block 1 is consistent. Furthermore, during grinding, coolant is sprayed onto the large-diameter portion 201, and debris is also generated during grinding. Coolant and debris enter the insertion hole 13, making it difficult to remove the bar stock 200. To address this issue, this application provides a guide channel 14. The guide channel 14 is formed on the lower end face 12 of the clamping block 1, connecting the bottom of the insertion hole 13 to the outside of the clamping block 1. Thus, under gravity, coolant and debris can enter the guide channel 14 along the insertion hole 13 and then exit the clamping block 1 from the guide channel 14. This facilitates the insertion and removal of the bar stock 200, reduces the cleaning frequency of the clamping block 1 and the base 2, thereby extending operation time and improving work efficiency.

[0042] Optionally, the bar stock grinding fixture 100 also includes threaded fasteners, and the base 2 and the clamping block 1 are connected by threaded fasteners.

[0043] For example, the base 2 has a light hole 21 in the vertical direction X, and the clamping block 1 has a threaded hole 15 in the vertical direction X. When the base 2 and the clamping block 1 are assembled, the light hole 21 and the threaded hole 15 are coaxially arranged. The threaded fastener passes through the light hole 21 and is inserted into the threaded hole 15 and threadedly connected to the clamping block 1. The base 2 is clamped between the nut of the threaded fastener and the clamping block 1.

[0044] This design provides the threaded connection with strong stability and reliability, and facilitates disassembly and maintenance between the base 2 and the clamping block 1.

[0045] Optionally, multiple threaded fasteners are provided, and the multiple threaded fasteners are evenly distributed along the edges of the base 2 and the clamping block 1.

[0046] For example, both the base 2 and the clamping block 1 are cuboids, and threaded fasteners are installed at the four corners of the cuboids.

[0047] This allows the base 2 and the clamping block 1 to be installed more tightly.

[0048] Optionally, the base 2 or the clamping block 1 has a countersunk hole 22, and the nut of the threaded fastener is inserted into the countersunk hole 22.

[0049] For example, the base 2 has a countersunk hole 22, and the threaded fastener is inserted from the side of the base 2 away from the clamping block 1. The nut of the threaded fastener is inserted into the countersunk hole 22, that is, the nut does not protrude from the end face of the side of the base 2 away from the clamping block 1.

[0050] Optionally, multiple insertion holes 13 are provided, and the multiple insertion holes 13 are arranged in parallel. For example, the multiple insertion holes 13 are arranged in an array along a first horizontal direction and / or a second horizontal direction. This allows the bar stock grinding jig 100 to simultaneously assemble multiple bars 200.

[0051] Optionally, multiple flow channels 14 are provided, and each flow channel 14 is connected to at least one socket 13.

[0052] In this way, the multiple guide channels 14 can quickly discharge gas, coolant or debris to the corresponding sockets 13.

[0053] Optionally, the multiple guide channels 14 include a first guide channel 14 and a second guide channel 14, with the outlet of the first guide channel 14 and the outlet of the second guide channel 14 formed on different end faces of the clamping block 1.

[0054] Optionally, the first guide groove 14 and the second guide groove 14 are connected at the insertion hole 13.

[0055] With this configuration, the first guide channel 14 and the second guide channel 14 are redundantly designed. When one is blocked, the other can still guide the flow to the insertion hole 13, thereby reducing the number of maintenance times for the bar grinding fixture 100.

[0056] Optionally, the insertion hole 13 is a stepped hole, including a large-diameter section 131 and a small-diameter section 132 that are interconnected and coaxially formed. One end of the small-diameter section 132 penetrates the upper end face 11, and one end of the large-diameter section 131 penetrates the lower end face 12. The axial length of the small-diameter section 132 is greater than the axial length of the large-diameter section 131. With this configuration, the small-diameter section 132 has a transition fit with the small-diameter portion 202 of the bar stock 200 to stabilize the bar stock 200. The inner sidewall of the large-diameter section 131 is spaced apart from the bar stock 200. The large-diameter section 131 is set to reduce the machining accuracy of the clamping block 1 and avoid making the small-diameter section 132 too long.

[0057] Optionally, an annular protrusion is formed on the upper end surface 11. The annular protrusion is formed at the end of the socket 13 and is coaxially arranged with the socket 13. In the vertical direction X, the projection of the annular protrusion is located within the projection of the large diameter portion 201.

[0058] With this configuration, an annular protrusion protrudes from the upper end face 11 in the vertical direction X, which is used to intercept impurities such as coolant and debris from entering the insertion hole 13. This helps to maintain the gap between the bar stock 200 and the side wall of the insertion hole 13, preventing the gap from being filled with impurities and avoiding the bar stock 200 from getting stuck in the insertion hole 13.

[0059] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A jig for grinding bar stock, wherein the bar stock (200) has a stepped shaft structure, including a large diameter section (201) and a small diameter section (202), characterized in that, The fixture for grinding the bar stock includes: A clamping block (1) is provided along the vertical direction (X). The clamping block (1) includes an upper end face (11) and a lower end face (12). The clamping block (1) is provided with an insertion hole (13) and a guide groove (14). The insertion hole (13) is provided along the vertical direction (X) and penetrates the upper end face (11) and the lower end face (12). The diameter of the insertion hole (13) is smaller than the maximum diameter of the large diameter portion (201). The small diameter portion (202) is inserted into the insertion hole (13). The large diameter portion (201) extends out of the upper end face (11). The guide groove (14) is provided on the lower end face (12). The guide groove (14) connects the insertion hole (13) and the clamping block (1) at least one side end face in the horizontal direction. The base (2) is fixed to the clamp (1) along the vertical direction (X), the base (2) is in close contact with the lower end face (12) of the clamp (1), and one end of the small diameter part (202) abuts against the base (2).

2. The jig for grinding bar stock according to claim 1, characterized in that, It also includes threaded fasteners, through which the base (2) and the clamp (1) are connected.

3. The jig for grinding bar stock according to claim 2, characterized in that, The threaded fasteners are provided in multiple quantities, and the multiple threaded fasteners are evenly distributed along the edges of the base (2) and the clamp (1).

4. The jig for grinding bar stock according to claim 2, characterized in that, The base (2) or the clamp (1) has a countersunk hole (22), and the nut of the threaded fastener is inserted into the countersunk hole (22).

5. The jig for grinding bar stock according to claim 1, characterized in that, The socket (13) has multiple openings, and the multiple sockets (13) are arranged in parallel.

6. The jig for grinding bar stock according to claim 5, characterized in that, The guide groove (14) has multiple grooves, and each guide groove (14) is connected to at least one of the insertion holes (13).

7. The jig for grinding bar stock according to claim 6, characterized in that, The plurality of flow guides (14) include a first flow guide (14) and a second flow guide (14), the outlet of the first flow guide (14) and the outlet of the second flow guide (14) are formed on different end faces of the clamp (1).

8. The jig for grinding bar stock according to claim 7, characterized in that, The first guide groove (14) and the second guide groove (14) are connected at the insertion hole (13).

9. The jig for grinding bar stock according to claim 1, characterized in that, The insertion hole (13) is a stepped hole, including a large diameter section (131) and a small diameter section (132) that are interconnected and coaxially opened. One end of the small diameter section (132) penetrates the upper end face (11), and one end of the large diameter section (131) penetrates the lower end face (12). The axial length of the small diameter section (132) is greater than the axial length of the large diameter section (131).

10. The jig for grinding bar stock according to any one of claims 1-9, characterized in that, The upper end face (11) has an annular protrusion formed at the end of the insertion hole (13) and coaxially arranged with the insertion hole (13). In the vertical direction (X), the projection of the annular protrusion is located within the projection of the large diameter portion (201).

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