A continuous deep hole machining auxiliary drill jig

Abstract

The application discloses a continuous deep hole processing auxiliary drill jig, and aims to solve the problem that in the prior art, in the process of continuously drilling segments on the same axis position, the risk of drilling deviation is prone to occur, thereby affecting the quality of the processed product. The application solves the above technical problem through the following technical scheme: a plurality of drill jig plates are arranged, connecting blocks are arranged at the two ends of the plurality of drill jig plates, and connecting through holes are arranged on the connecting blocks; a plurality of positioning plates corresponding to the end faces of the segments are arranged in the length direction of the plurality of drill jig plates, and positioning through holes are arranged on the positioning plates; the two ends of the connecting blocks are fixedly arranged at the two ends of a chamber, the positioning plates abut against the end faces of the segments, a drill bit passes through the connecting through holes and then passes through the positioning through holes, and segments corresponding to the positioning through holes are drilled.

Description

Technical Field

[0001] This invention relates to the field of deep hole machining technology, and more specifically, to an auxiliary drilling jig for continuous deep hole machining. Background Technology

[0002] In deep hole machining, it is common to encounter situations where multiple deep holes are machined consecutively. For example, when machining a power frame product, our company has a cylindrical chamber on the frame. Multiple segments are arranged along the axial direction on the inner wall of the chamber, and each segment requires through holes. This necessitates machining multiple through holes consecutively at the same axial position. Current technology typically involves directly drilling each through hole on each segment one by one using a drill bit. However, this machining method is prone to drilling deviation as the number of segments increases. Furthermore, the lack of threaded holes around the through holes makes it impossible to use conventional positioning methods to fix the drill hole position. Summary of the Invention

[0003] This invention overcomes the risk of drilling deviation during continuous drilling of segments on the same axis in the prior art, which affects the quality of the finished product. It provides a continuous deep hole machining auxiliary drill jig that can continuously assist in positioning the drill bit, thereby ensuring the accuracy of through hole machining on each segment and improving the quality of the finished product.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a continuous deep hole machining auxiliary drilling jig, comprising several drilling templates, with connecting blocks provided at both ends of the several drilling templates, and connecting through holes provided on the connecting blocks; Several positioning plates are set along the length of several drill templates, corresponding to the end faces of the segments, and positioning holes are set on the positioning plates; The two ends of the connecting block are fixedly set at both ends of the chamber. The positioning plate abuts against the end face of the segment. The drill bit passes through the connecting hole and then through the positioning hole to drill the segment corresponding to the positioning hole.

[0005] In use, the connecting blocks are fixedly installed at both ends of the cavity, allowing the drill template to pass through the cavity. Each positioning plate corresponds to the end face of a segment. When the drill bit is drilling, the first hole is drilled on the end face of the cavity through the connecting holes. Then, the drill bit passes through the connecting holes and enters the positioning holes to drill the end face of the segment corresponding to the positioning holes. The process then continues with drilling the next segment. During the drilling process, the positioning holes provide positioning, preventing the drill bit from shifting during drilling and improving the drilling accuracy of each segment, thereby improving the quality of the finished product.

[0006] Preferably, a positioning arc block is provided on the drilling template, which abuts against the arc surface of the segment; the positioning plate abuts against the end face of the segment.

[0007] The positioning arc block allows the drill template to fit more tightly against the inside of the segment.

[0008] Preferably, the drilling template has two first pin holes, and the positioning plate has a first positioning pin that matches the two first pin holes; the drilling template has a first through hole located between the two first pin holes, and the positioning plate has a first threaded hole that matches the first through hole.

[0009] The positioning plate can be easily installed by the cooperation between the first pin hole and the first positioning pin.

[0010] As a preferred option, the drill template is provided with three rods.

[0011] In this embodiment, three drill templates are set according to the actual processing conditions.

[0012] Preferably, a radial support assembly is also included, which comprises a radial telescopic rod and an auxiliary connecting rod; the radial telescopic rod is supported between several drill templates.

[0013] The auxiliary connecting rod serves to connect several drill templates, reducing the number of radial telescopic rods required. Taking the three drill templates in this embodiment as an example, two templates are fixedly connected by the auxiliary connecting rod, and the third template is positioned perpendicularly to the auxiliary connecting rod at its midpoint. One end of the radial telescopic rod is fixedly connected to the auxiliary connecting rod, and the other end is fixedly connected to the third drill template. The radial telescopic rod is then extended, ensuring that all three drill templates are firmly abutted against the arc surface of the segment.

[0014] Preferably, the radial telescopic rod includes a threaded rod and a sleeve fitted on one end of the threaded rod, with an adjusting nut threaded onto the threaded rod; one end of the sleeve abuts against the drill template, and the other end of the sleeve abuts against the adjusting nut.

[0015] By rotating the adjusting nut, the adjusting nut can push the sleeve rod to move, thereby causing the radial telescopic rod to expand outward from both ends.

[0016] As a preferred option, a positioning sleeve is provided inside the positioning perforation.

[0017] Because the drill bit wears down the inner wall of the positioning hole during drilling at the end face of the segment, the diameter of the positioning hole increases over time. Therefore, a positioning sleeve is installed inside the positioning hole. The positioning sleeve is made of a high-hardness alloy metal, which reduces wear on the positioning sleeve and improves drilling accuracy. Even if the positioning sleeve wears down, it can be directly replaced, ensuring accurate positioning of the drill bit during drilling.

[0018] Preferably, the end of the positioning sleeve furthest from the segment has a guide opening with a gradually increasing size.

[0019] This allows the drill bit to enter the positioning sleeve more easily along the guide opening during processing.

[0020] Preferably, a bearing is provided between the positioning sleeve and the positioning hole.

[0021] A bearing is installed between the positioning sleeve and the positioning hole, allowing them to rotate freely. This reduces wear on the positioning sleeve from the drill bit during rotation. Preferably, a cooling groove is provided on the inner wall of the positioning sleeve.

[0022] A cooling groove is located on the inner wall of the positioning sleeve, allowing coolant to flow along it when the drill bit is machining a deep hole. Because the positioning plate fits snugly against the end face of the segment, the gap between the drill bit and the inner wall of the positioning sleeve is small. This makes it difficult for coolant to enter the deep hole to cool the drill bit during machining. Therefore, in this embodiment, a cooling groove is also provided on the inner wall of the positioning sleeve, allowing coolant to pass through the positioning sleeve and enter the deep hole machining area, thereby cooling the deep hole.

[0023] Compared with the prior art, the beneficial effects of the present invention are: This invention fixes connecting blocks at both ends of a cavity, allowing the drill template to pass through the cavity. Each positioning plate corresponds to the end face of a segment. During drilling, the first hole is drilled on the end face of the cavity through the connecting perforation. The drill then passes through the connecting perforation and enters the positioning perforation to drill the end face of the segment corresponding to the positioning perforation. This process is repeated for the next segment. Positioning via the positioning perforations prevents the drill from shifting during drilling, improving the drilling accuracy of each segment and ultimately enhancing the quality of the finished product. Attached Figure Description

[0024] Figure 1 This is a diagram showing the actual usage state of the present invention.

[0025] Figure 2This is a perspective view of the overall structure of the present invention.

[0026] Figure 3 This is a schematic diagram of the connection between the positioning plate and the drilling template of the present invention.

[0027] Figure 4 This is a cross-sectional view of the fit between the positioning plate and the positioning sleeve of the present invention.

[0028] Figure 5 This is the front view of the present invention in actual use.

[0029] Figure 6 yes Figure 5 A cross-sectional view along the AA direction.

[0030] Figure 7 This is a cross-sectional view of the radial telescopic rod of the present invention.

[0031] Figure 8 This is a cross-sectional view of the positioning plate and positioning sleeve in embodiment 4 of the present invention.

[0032] Figure 9 This is the front view of the positioning sleeve of the present invention.

[0033] In the diagram: 1. Drill template; 11. First pin hole; 12. First through hole; 2. Connecting block; 21. Connecting through hole; 22. Fixing through hole; 3. Positioning plate; 31. Positioning through hole; 32. First positioning pin; 33. First threaded hole; 4. Positioning sleeve; 41. Guide port; 42. Rubber strip; 43. Cooling groove; 5. Position the arc block; 6. Radial support assembly; 61. Radial telescopic rod; 611. Threaded rod; 612. Sleeve rod; 613. Adjusting nut; 62. Auxiliary connecting rod. 7. Bearings; 8. Segment. Detailed Implementation

[0034] The technical solution of the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings: Example 1: Refer to Figures 1 to 7 As shown, a continuous deep hole machining auxiliary drilling jig includes several drilling templates 1, with connecting blocks 2 at both ends of the several drilling templates 1, and connecting through holes 21 provided on the connecting blocks 2. A number of positioning plates 3 corresponding to the end faces of segments 8 are provided along the length direction of several drilling templates 1, and positioning through holes 31 are provided on the positioning plates 3. The two ends of the connecting block 2 are fixedly installed at both ends of the chamber. The positioning plate 3 corresponds to the end face of the segment. The drill bit passes through the connecting hole 21 and then through the positioning hole 31 to drill the segment corresponding to the positioning hole 31.

[0035] In use, the connecting blocks 2 are fixedly installed at both ends of the cavity, allowing the drill template 1 to pass through the cavity. Each positioning plate 3 corresponds to the end face of a segment. When the drill bit is drilling, the first hole is drilled on the end face of the cavity through the connecting through hole 21. Then, the drill bit passes through the connecting through hole 21 and enters the positioning through hole 31 to drill the end face of the segment corresponding to the positioning through hole 31. Then, the drill bit drills the next segment. During the drilling process, the positioning through hole 31 can prevent the drill bit from shifting during drilling, thereby improving the drilling accuracy of each segment and ultimately improving the quality of the finished product.

[0036] Example 2: Refer to Figures 1 to 7 As shown, a continuous deep hole machining auxiliary drilling jig includes several drill templates 1, with connecting blocks 2 at both ends of the drill templates 1. Each connecting block 2 has a connecting through hole 21. The number of drill templates 1 is related to the number of circumferential holes drilled on the segment. In this embodiment, three sets of segment holes are required on the segment, with each set containing two segment holes. Therefore, three sets of drill templates 1 are provided in this embodiment. When the drill templates 1 are installed inside the cavity... Several positioning plates 3, corresponding to the end faces of segments, are arranged along the length of several drill templates 1. Positioning holes 31 are provided on the positioning plates 3. The number of positioning holes 31 corresponds to the number of holes in each group of segments. In this embodiment, each group of segments contains two segments; therefore, each positioning plate 3 has two positioning holes 31. Consequently, two connecting holes 21 are also provided.

[0037] In addition, to facilitate the installation of the connecting block 2, two fixing holes 22 are provided on the connecting block 2, and the two fixing holes 22 are located on both sides of the two connecting holes 21. Bolts pass through the fixing holes 22 and the end face of the cavity to connect, thereby fixing the connecting block 2 to the end face of the cavity.

[0038] The two ends of the connecting block 2 are fixedly installed at both ends of the chamber. The positioning plate 3 corresponds to the end face of the segment. The drill bit passes through the connecting hole 21 and then through the positioning hole 31 to drill the segment corresponding to the positioning hole 31.

[0039] Specifically, the drilling template 1 has two first pin holes 11, and the positioning plate 3 has a first positioning pin 32 that matches the two first pin holes 11. The first positioning pin 32 is inserted into the first pin holes 11, thereby positioning and assembling the positioning plate 3 before the drilling template 1 is installed. The drilling template 1 has a first through hole 12 located between the two first pin holes 11, and the positioning plate 3 has a first threaded hole 33 that matches the first through hole 12. The first bolt passes through the first through hole 12 and the first threaded hole 33 to achieve fixed installation.

[0040] A positioning sleeve 4 is installed inside the positioning hole 31. Because the inner wall of the positioning hole 31 wears down during drilling on the end face of the segment, the diameter of the positioning hole 31 increases over time. Therefore, the positioning sleeve 4, made of a high-hardness alloy metal, is installed inside the positioning hole 31 to reduce wear and improve drilling accuracy. Even if the positioning sleeve 4 wears down, it can be directly replaced, ensuring accurate positioning of the drill bit during drilling.

[0041] In addition, a guide opening 41 with a gradually increasing opening is provided at the end of the positioning sleeve 4 away from the segment. This makes it easier for the drill bit to enter the positioning sleeve 4 along the guide opening 41.

[0042] To ensure a tighter fit between the drill template 1 and the inner side of the segment, positioning arc blocks 5 are provided on the drill template 1. The number of positioning arc blocks 5 is the same as the number of positioning plates 3. The positioning arc blocks 5 abut against the arc surface of the segment, and are fixed to the drill template 1 with bolts. The positioning plates 3 and positioning arc blocks 5 cooperate to form an L-shaped positioning end face. During use, the positioning arc blocks 5 abut against the arc surface of the segment, while the positioning plates 3 abut against the end face of the segment. Furthermore, because the positioning arc blocks 5 are arc-shaped, their curvature matches the curvature of the inner side of the segment, allowing them to better abut against the arc surface of the segment.

[0043] It should be noted that the cavity of the frame in this embodiment has six segments (including the segments at both ends of the cavity), therefore, four positioning plates 3 are correspondingly provided. Furthermore, to reduce the torque experienced by the drill bit during drilling, the four positioning plates 3 are divided into two groups, with each group of positioning plates 3 facing the nearest cavity end face. That is, during drilling, the drill bit first drills holes in three segments at one end of the cavity, and then drills holes in the other three segments at the other end of the cavity. This ensures that the drill bit receives a maximum torque from three segments during each drilling operation, thereby improving the drill bit's service life. Therefore, the positioning plates 3 need to be positioned on the end face of the segment closest to the cavity.

[0044] In use, the connecting blocks 2 are fixedly installed at both ends of the cavity, allowing the drill template 1 to pass through the cavity. Each positioning plate 3 corresponds to the end face of a segment. When the drill bit is drilling, the first hole is drilled on the end face of the cavity through the connecting through hole 21. Then, the drill bit passes through the connecting through hole 21 and enters the positioning through hole 31 to drill the end face of the segment corresponding to the positioning through hole 31. Then, the drill bit drills the next segment. During the drilling process, the positioning through hole 31 can be used for positioning, thereby preventing the drill bit from shifting during drilling, improving the drilling accuracy of each segment, and ultimately improving product quality.

[0045] Example 3: Reference Figures 1 to 7 As shown, a continuous deep hole machining auxiliary drilling jig includes several drill templates 1, with connecting blocks 2 at both ends of the drill templates 1. Each connecting block 2 has a connecting through hole 21. The number of drill templates 1 is related to the number of circumferential holes drilled on the segment. In this embodiment, three sets of segment holes are required on the segment, with each set containing two segment holes. Therefore, three sets of drill templates 1 are provided in this embodiment. When the drill templates 1 are installed inside the cavity... Several positioning plates 3, corresponding to the end faces of segments, are arranged along the length of several drill templates 1. Positioning holes 31 are provided on the positioning plates 3. The number of positioning holes 31 corresponds to the number of holes in each group of segments. In this embodiment, each group of segments contains two segments; therefore, each positioning plate 3 has two positioning holes 31. Consequently, two connecting holes 21 are also provided.

[0046] In addition, to facilitate the installation of the connecting block 2, two fixing holes 22 are provided on the connecting block 2, and the two fixing holes 22 are located on both sides of the two connecting holes 21. Bolts pass through the fixing holes 22 and the end face of the cavity to connect, thereby fixing the connecting block 2 to the end face of the cavity.

[0047] The two ends of the connecting block 2 are fixedly installed at both ends of the chamber. The positioning plate 3 corresponds to the end face of the segment. The drill bit passes through the connecting hole 21 and then through the positioning hole 31 to drill the segment corresponding to the positioning hole 31.

[0048] Specifically, the drilling template 1 has two first pin holes 11, and the positioning plate 3 has a first positioning pin 32 that matches the two first pin holes 11. The first positioning pin 32 is inserted into the first pin holes 11, thereby positioning and assembling the positioning plate 3 before the drilling template 1 is installed. The drilling template 1 has a first through hole 12 located between the two first pin holes 11, and the positioning plate 3 has a first threaded hole 33 that matches the first through hole 12. The first bolt passes through the first through hole 12 and the first threaded hole 33 to achieve fixed installation.

[0049] A positioning sleeve 4 is installed inside the positioning hole 31. Because the inner wall of the positioning hole 31 wears down during drilling on the end face of the segment, the diameter of the positioning hole 31 increases over time. Therefore, the positioning sleeve 4, made of a high-hardness alloy metal, is installed inside the positioning hole 31 to reduce wear and improve drilling accuracy. Even if the positioning sleeve 4 wears down, it can be directly replaced, ensuring accurate positioning of the drill bit during drilling.

[0050] In addition, a guide opening 41 with a gradually increasing opening is provided at the end of the positioning sleeve 4 away from the segment. This makes it easier for the drill bit to enter the positioning sleeve 4 along the guide opening 41.

[0051] To ensure a tighter fit between the drill template 1 and the inner side of the segment, positioning arc blocks 5 are provided on the drill template 1. The number of positioning arc blocks 5 is the same as the number of positioning plates 3. The positioning arc blocks 5 abut against the arc surface of the segment, and are fixed to the drill template 1 with bolts. The positioning plates 3 and positioning arc blocks 5 cooperate to form an L-shaped positioning end face. During use, the positioning arc blocks 5 abut against the arc surface of the segment, while the positioning plates 3 abut against the end face of the segment. Furthermore, because the positioning arc blocks 5 are arc-shaped, their curvature matches the curvature of the inner side of the segment, allowing them to better abut against the arc surface of the segment.

[0052] It should be noted that the cavity of the frame in this embodiment has six segments (including the segments at both ends of the cavity), therefore, four positioning plates 3 are correspondingly provided. Furthermore, to reduce the torque experienced by the drill bit during drilling, the four positioning plates 3 are divided into two groups, with each group of positioning plates 3 facing the nearest cavity end face. That is, during drilling, the drill bit first drills holes in three segments at one end of the cavity, and then drills holes in the other three segments at the other end of the cavity. This ensures that the drill bit receives a maximum torque from three segments during each drilling operation, thereby improving the drill bit's service life. Therefore, the positioning plates 3 need to be positioned on the end face of the segment closest to the cavity.

[0053] This embodiment is similar in structure to that in embodiment 1. The difference is that, in order to make the drill template 1 fit more stably against the inner side of the segment and improve the drilling accuracy, a radial support component 6 is provided in several drill templates 1 to make the drill template 1 fit tightly against the arc surface of the segment.

[0054] The radial support assembly 6 includes a radial telescopic rod 61 and an auxiliary connecting rod 62. The radial telescopic rod 61 is supported between several drill templates 1.

[0055] The auxiliary connecting rod 62 enables the connection of several drill templates 1, thereby reducing the number of radial telescopic rods 61 required. Taking three drill templates 1 in this embodiment as an example, two drill templates 1 are fixedly connected by the auxiliary connecting rod 62, and the third drill template 1 is positioned perpendicularly to the auxiliary connecting rod 62, exactly at its midpoint. One end of the radial telescopic rod 61 is fixedly connected to the auxiliary connecting rod 62, and the other end is fixedly connected to the third drill template 1. The radial telescopic rod 61 is then extended, allowing all three drill templates 1 to firmly abut against the arc surface of the segment.

[0056] In this embodiment, the radial telescopic rod 61 includes a threaded rod 611 and a sleeve rod 612 sleeved at one end of the threaded rod 611. An adjusting nut 613 is threaded onto the threaded rod 611. One end of the sleeve rod 612 abuts against the drill template 1, and the other end of the sleeve rod 612 abuts against the adjusting nut 613. By rotating the adjusting nut 613, the adjusting nut 613 can push the sleeve rod 612 to move, thereby causing the radial telescopic rod 61 to expand outward from both ends.

[0057] In use, the connecting blocks 2 are fixedly installed at both ends of the cavity, allowing the drill template 1 to pass through the cavity. Each positioning plate 3 corresponds to the end face of a segment. When the drill bit is drilling, the first hole is drilled on the end face of the cavity through the connecting through hole 21. Then, the drill bit passes through the connecting through hole 21 and enters the positioning through hole 31 to drill the end face of the segment corresponding to the positioning through hole 31. Then, the drill bit drills the next segment. During the drilling process, the positioning through hole 31 can be used for positioning, thereby preventing the drill bit from shifting during drilling, improving the drilling accuracy of each segment, and ultimately improving product quality.

[0058] Example 4; Refer to Figures 1 to 9 As shown, a continuous deep hole machining auxiliary drilling jig includes several drill templates 1, with connecting blocks 2 at both ends of the drill templates 1. Each connecting block 2 has a connecting through hole 21. The number of drill templates 1 is related to the number of circumferential holes drilled on the segment. In this embodiment, three sets of segment holes are required on the segment, with each set containing two segment holes. Therefore, three sets of drill templates 1 are provided in this embodiment. When the drill templates 1 are installed inside the cavity... Several positioning plates 3, corresponding to the end faces of segments, are arranged along the length of several drill templates 1. Positioning holes 31 are provided on the positioning plates 3. The number of positioning holes 31 corresponds to the number of holes in each group of segments. In this embodiment, each group of segments contains two segments; therefore, each positioning plate 3 has two positioning holes 31. Consequently, two connecting holes 21 are also provided.

[0059] In addition, to facilitate the installation of the connecting block 2, two fixing holes 22 are provided on the connecting block 2, and the two fixing holes 22 are located on both sides of the two connecting holes 21. Bolts pass through the fixing holes 22 and the end face of the cavity to connect, thereby fixing the connecting block 2 to the end face of the cavity.

[0060] The two ends of the connecting block 2 are fixedly installed at both ends of the chamber. The positioning plate 3 corresponds to the end face of the segment. The drill bit passes through the connecting hole 21 and then through the positioning hole 31 to drill the segment corresponding to the positioning hole 31.

[0061] Specifically, the drilling template 1 has two first pin holes 11, and the positioning plate 3 has a first positioning pin 32 that matches the two first pin holes 11. The first positioning pin 32 is inserted into the first pin holes 11, thereby positioning and assembling the positioning plate 3 before the drilling template 1 is installed. The drilling template 1 has a first through hole 12 located between the two first pin holes 11, and the positioning plate 3 has a first threaded hole 33 that matches the first through hole 12. The first bolt passes through the first through hole 12 and the first threaded hole 33 to achieve fixed installation.

[0062] A positioning sleeve 4 is installed inside the positioning hole 31. Because the inner wall of the positioning hole 31 wears down during drilling on the end face of the segment, the diameter of the positioning hole 31 increases over time. Therefore, the positioning sleeve 4, made of a high-hardness alloy metal, is installed inside the positioning hole 31 to reduce wear and improve drilling accuracy. Even if the positioning sleeve 4 wears down, it can be directly replaced, ensuring accurate positioning of the drill bit during drilling.

[0063] In addition, a guide opening 41 with a gradually increasing opening is provided at the end of the positioning sleeve 4 away from the segment. This makes it easier for the drill bit to enter the positioning sleeve 4 along the guide opening 41.

[0064] To ensure a tighter fit between the drill template 1 and the inner side of the segment, positioning arc blocks 5 are provided on the drill template 1. The number of positioning arc blocks 5 is the same as the number of positioning plates 3. The positioning arc blocks 5 abut against the arc surface of the segment, and are fixed to the drill template 1 with bolts. The positioning plates 3 and positioning arc blocks 5 cooperate to form an L-shaped positioning end face. During use, the positioning arc blocks 5 abut against the arc surface of the segment, while the positioning plates 3 abut against the end face of the segment. Furthermore, because the positioning arc blocks 5 are arc-shaped, their curvature matches the curvature of the inner side of the segment, allowing them to better abut against the arc surface of the segment.

[0065] It should be noted that the cavity of the frame in this embodiment has six segments (including the segments at both ends of the cavity), therefore, four positioning plates 3 are correspondingly provided. Furthermore, to reduce the torque experienced by the drill bit during drilling, the four positioning plates 3 are divided into two groups, with each group of positioning plates 3 facing the nearest cavity end face. That is, during drilling, the drill bit first drills holes in three segments at one end of the cavity, and then drills holes in the other three segments at the other end of the cavity. This ensures that the drill bit receives a maximum torque from three segments during each drilling operation, thereby improving the drill bit's service life. Therefore, the positioning plates 3 need to be positioned on the end face of the segment closest to the cavity.

[0066] This embodiment is similar in structure to that in embodiment 1. The difference is that, in order to make the drill template 1 fit more stably against the inner side of the segment and improve the drilling accuracy, a radial support component 6 is provided in several drill templates 1 to make the drill template 1 fit tightly against the arc surface of the segment.

[0067] The radial support assembly 6 includes a radial telescopic rod 61 and an auxiliary connecting rod 62. The radial telescopic rod 61 is supported between several drill templates 1.

[0068] The auxiliary connecting rod 62 enables the connection of several drill templates 1, thereby reducing the number of radial telescopic rods 61 required. Taking three drill templates 1 in this embodiment as an example, two drill templates 1 are fixedly connected by the auxiliary connecting rod 62, and the third drill template 1 is positioned perpendicularly to the auxiliary connecting rod 62, exactly at its midpoint. One end of the radial telescopic rod 61 is fixedly connected to the auxiliary connecting rod 62, and the other end is fixedly connected to the third drill template 1. The radial telescopic rod 61 is then extended, allowing all three drill templates 1 to firmly abut against the arc surface of the segment.

[0069] In this embodiment, the radial telescopic rod 61 includes a threaded rod 611 and a sleeve rod 612 sleeved at one end of the threaded rod 611. An adjusting nut 613 is threaded onto the threaded rod 611. One end of the sleeve rod 612 abuts against the drill template 1, and the other end of the sleeve rod 612 abuts against the adjusting nut 613. By rotating the adjusting nut 613, the adjusting nut 613 can push the sleeve rod 612 to move, thereby causing the radial telescopic rod 61 to expand outward from both ends.

[0070] Reference Figures 8 to 9 As shown, this embodiment is similar in structure to that in Embodiment 2 or Embodiment 3, except that a bearing 7 is provided between the positioning sleeve 4 and the positioning through hole 31. This allows the positioning sleeve 4 and the positioning through hole 31 to rotate freely, thereby reducing wear on the positioning sleeve 4 when the drill bit rotates. Simultaneously, several rubber strips 42 arranged along the axial direction are provided on the inner wall of the positioning sleeve 4; in this embodiment, three rubber strips 42 are provided. The rubber strips 42 have extensibility, not affecting the movement of the drill bit along the axial direction of the positioning sleeve 4. When the drill bit rotates, the rubber strips 42 can tightly fit around the drill bit, allowing the positioning sleeve 4 to rotate via the rubber strips 42.

[0071] A cooling groove 43 is provided on the inner wall of the positioning sleeve 4. The cooling groove 43 allows coolant to flow along the cooling groove 43 when the drill bit is machining a deep hole. Because the positioning plate 3 is in contact with the end face of the segment, the gap between the drill bit and the inner wall of the positioning sleeve 4 is small. This makes it difficult for coolant to enter the deep hole to cool the drill bit when machining a deep hole. Therefore, in this embodiment, a cooling groove 43 is also provided on the inner wall of the positioning sleeve 4, allowing coolant to pass through the positioning sleeve 4 and enter the deep hole machining position, thereby cooling the deep hole.

[0072] Furthermore, the cooling groove 43 is designed in a spiral shape along the inner wall of the positioning sleeve 4. Since the positioning sleeve 4 rotates during drilling, the coolant can be ejected along the spiral cooling groove 43, thereby increasing the flow rate of coolant through the inner side of the positioning sleeve 4 and improving the cooling effect for deep hole machining. Therefore, when machining deep holes in segments, the coolant can be aligned with the guide port 41, allowing the coolant to flow into the machined area along the positioning sleeve 4.

[0073] In use, the connecting blocks 2 are fixedly installed at both ends of the cavity, allowing the drill template 1 to pass through the cavity. Each positioning plate 3 corresponds to the end face of a segment. When the drill bit is drilling, the first hole is drilled on the end face of the cavity through the connecting through hole 21. Then, the drill bit passes through the connecting through hole 21 and enters the positioning through hole 31 to drill the end face of the segment corresponding to the positioning through hole 31. Then, the drill bit drills the next segment. During the drilling process, the positioning through hole 31 can be used for positioning, thereby preventing the drill bit from shifting during drilling, improving the drilling accuracy of each segment, and ultimately improving product quality.

[0074] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Other variations and modifications may be made without departing from the technical solutions described in the claims.

Claims

1. A continuous deep hole machining auxiliary drilling jig, characterized in that, It includes several drill templates, and connecting blocks are provided at both ends of the drill templates. The connecting blocks are provided with connecting holes. Several positioning plates are set along the length of several drill templates, corresponding to the end faces of the segments, and positioning holes are set on the positioning plates; The connecting blocks at both ends of the drill template are fixedly installed at both ends of the chamber. The positioning plate abuts against the end face of the segment. The drill bit passes through the connecting hole and then through the positioning hole to drill holes in the segment corresponding to the positioning hole. It also includes a radial support assembly, which includes a radial telescopic rod and an auxiliary connecting rod. The radial telescopic rod is supported between several drill templates. The radial telescopic rod includes a threaded rod, one end of which is fitted with a sleeve rod, and the other end of which is connected to the auxiliary connecting rod. An adjusting nut is threaded onto the threaded rod. The adjusting nut abuts against one end of the sleeve rod, and the other end of the sleeve rod is connected to one of the drill templates. The auxiliary connecting rod is connected to the remaining drill templates.

2. The auxiliary drilling jig for continuous deep hole machining according to claim 1, characterized in that, A positioning arc block is provided on the drilling template, which abuts against the arc surface of the segment; the positioning plate abuts against the end face of the segment.

3. The auxiliary drilling jig for continuous deep hole machining according to claim 2, characterized in that, Two first pin holes are provided on the drilling template, and a first positioning pin is provided on the positioning plate to match the two first pin holes; a first through hole is provided on the drilling template between the two first pin holes, and a first threaded hole is provided on the positioning plate to match the first through hole.

4. The auxiliary drilling jig for continuous deep hole machining according to claim 1, characterized in that, The drill template has three supports.

5. The continuous deep hole machining auxiliary drill jig according to any one of claims 1 to 4, characterized in that, A positioning sleeve is installed inside the positioning perforation.

6. The auxiliary drilling jig for continuous deep hole machining according to claim 5, characterized in that, The end of the positioning sleeve furthest from the segment has a guide opening with a gradually increasing size.

7. The auxiliary drilling jig for continuous deep hole machining according to claim 6, characterized in that, A bearing is installed between the positioning sleeve and the positioning hole.

8. The auxiliary drilling jig for continuous deep hole machining according to claim 7, characterized in that, Cooling grooves are provided on the inner wall of the positioning sleeve.

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