CN223339033U

CN223339033U - Cylindrical grinding machine for crankshaft machining

Info

Publication number: CN223339033U
Application number: CN202422783596.9U
Authority: CN
Inventors: 陈卫峰
Original assignee: Zhejiang Guanchuan Metal Products Co ltd
Current assignee: Zhejiang Guanchuan Metal Products Co ltd
Priority date: 2024-11-14
Filing date: 2024-11-14
Publication date: 2025-09-16
Anticipated expiration: 2034-11-14

Abstract

The application discloses a cylindrical grinder for crankshaft machining, which relates to the technical field of crankshaft machining equipment and comprises a lathe bed, a grinding wheel device, a workbench, two clamp devices, a longitudinal adjusting mechanism and a transverse adjusting mechanism, wherein the two clamp devices are arranged on the workbench and used for clamping main journals at two ends of a crankshaft, the clamp devices comprise the longitudinal adjusting mechanism used for adjusting along the radial direction of the crankshaft and the transverse adjusting mechanism used for adjusting along the radial direction of the crankshaft, the transverse adjusting mechanism is arranged on the longitudinal adjusting mechanism, and the crankshaft machining cylindrical grinder can enable the crankshaft to be rotationally machined by taking the axis of a connecting rod neck as a rotation center through the adjustment of the longitudinal adjusting mechanism and the transverse adjusting mechanism of the two clamp devices, so that the grinding wheel device grinds the connecting rod neck, the crankshaft machining flexibility is improved, the accurate machining of the crankshaft at different positions is ensured, the production requirements of crankshafts with small batches of different specifications can be met, and the production and manufacturing cost of the crankshafts can be reduced.

Description

Cylindrical grinding machine for crankshaft machining

Technical Field

The application relates to the technical field of crankshaft machining equipment, in particular to a cylindrical grinding machine for crankshaft machining.

Background

Cylindrical grinding machines for crankshaft machining are important in the field of crankshaft manufacturing, and machining accuracy directly influences performance and service life of an engine. In order to ensure high-precision machining of crankshafts, most of the conventional crankshaft cylindrical grinding machines adopt a numerical control follow-up crankshaft cylindrical grinding mode for machining, and the grinding machine is high in machining precision, high in production efficiency and suitable for machining of a large number of crankshafts.

In recent years, the small automobile market is rapidly developed, the market shows the requirements of crankshaft machining in small batches and different specifications, the crankshaft comprises a main journal and a connecting rod journal, and the connecting rod journal of the crankshaft is machined in a numerical control follow-up grinding mode, so that the machining and manufacturing cost of the crankshaft is greatly increased.

Disclosure of utility model

In order to help to reduce the manufacturing cost problem of crankshaft grinding, the application provides a cylindrical grinding machine for crankshaft machining, which adopts the following technical scheme:

The utility model provides a cylindrical grinder of bent axle processing, includes lathe bed, sets up the grinding wheel unit on the lathe bed, can drive the bent axle gyration and follow the workstation of bent axle axial displacement, still including installing two fixture device that are used for centre gripping bent axle both ends main journal on the workstation, fixture device is including being used for along the vertical adjustment mechanism of bent axle radial direction adjustment and being used for along the horizontal adjustment mechanism that is perpendicular to bent axle radial direction adjustment, horizontal adjustment mechanism installs on the vertical adjustment mechanism.

Through adopting above-mentioned technical scheme, this crankshaft machining cylindrical grinder passes through the adjustment of the vertical adjustment mechanism and the horizontal adjustment mechanism of two fixture device, can make the bent axle use the axis of connecting rod neck to carry out rotary processing as center of rotation to make grinding wheel device grind the connecting rod neck, not only improved the flexibility of crankshaft machining, still ensured the accurate processing of bent axle in different positions, can satisfy the demand of the production of small batch different specification bent axles, help reducing the manufacturing cost of bent axle.

Optionally, the vertical adjustment mechanism includes the anchor clamps seat, rotates the first lead screw that sets up on the anchor clamps seat, with anchor clamps seat sliding connection's carriage, be equipped with first transmission screw on the carriage, first transmission screw with first lead screw thread drive connection.

Through adopting above-mentioned technical scheme, vertical adjustment mechanism includes anchor clamps seat, first lead screw and carriage, and wherein first lead screw rotates and sets up on the anchor clamps seat and be connected with the first transmission screw thread transmission on the carriage for the carriage can follow first lead screw and carry out accurate regulation, realizes the accurate centre gripping location along the radial direction of bent axle to bent axle both ends main journal.

Optionally, a clamping part for clamping the chuck of the workbench is arranged on one side of the clamp seat, a first sliding rail matched with the sliding frame in a sliding manner is arranged on one side of the clamp seat away from the clamping part, and first mounting holes matched with the first screw rod in a rotating manner are formed in two ends of the clamp seat along the sliding rail direction.

By adopting the technical scheme, the clamping part for clamping the chuck of the workbench is arranged on one side of the clamp seat, so that the chuck can stably clamp the clamp seat, the first sliding rail which is in sliding fit with the sliding frame is arranged on one side of the clamp seat far away from the clamping part, the smooth sliding of the sliding frame on the clamp seat is ensured, the first mounting holes which are in running fit with the first screw rod are arranged at the two ends of the clamp seat along the direction of the first sliding rail, the reliable mounting and the rotation of the first screw rod are realized, and the accurate adjustment of the longitudinal adjusting mechanism is ensured.

Optionally, one side of the sliding frame, which is close to the first transmission screw hole, is provided with a first sliding groove matched with the first sliding rail, one side of the sliding frame, which is far away from the first sliding groove, is provided with a second sliding groove for installing the transverse adjusting mechanism, the second sliding groove is perpendicular to the first sliding groove, and one side of the sliding frame, which is close to the second sliding groove, is provided with a second transmission screw hole in transmission connection with the transverse adjusting mechanism.

Through adopting above-mentioned technical scheme, the carriage can follow vertical adjustment mechanism with first slide rail complex first spout and stabilize the slip, and the setting of second spout simultaneously makes horizontal adjustment mechanism can be perpendicular to vertical adjustment mechanism carry out accurate regulation, and the accuracy and the stability of main journal clamping position have further been strengthened in the transmission connection of second transmission screw and horizontal adjustment mechanism.

Optionally, the transverse adjusting mechanism comprises a supporting component and a pressing component, wherein the supporting component is used for clamping the main journal of the crankshaft, the supporting component is installed on the sliding frame, and the pressing component is installed on the supporting component.

Through adopting above-mentioned technical scheme, transverse adjustment mechanism includes supporting component and compresses tightly the subassembly, through installing supporting component on the carriage, compresses tightly the subassembly and installs on supporting component, has realized the accurate regulation and the stable clamp of bent axle main journal in transverse direction, improves machining precision and stability.

Optionally, the supporting component includes the support frame, rotates the second lead screw that sets up on the support frame, the second lead screw with second transmission screw thread transmission is connected, compress tightly the subassembly and install on the support frame.

Through adopting above-mentioned technical scheme, supporting component includes the support frame and rotates the second lead screw that sets up on the support frame, and second lead screw and second transmission screw thread transmission are connected, have realized along the accurate regulation of transverse direction, ensure the accurate location of bent axle main journal, compress tightly the subassembly and install on the support frame, can effectively press from both sides tight bent axle main journal, guarantee the stability in the course of working.

Optionally, the support frame be equipped with the second mounting hole that the second lead screw rotates to be connected the both sides of second mounting hole be equipped with second spout sliding fit's second slide rail, the support frame keep away from one side of second mounting hole is equipped with the supporting part that supports the bent axle main journal, the support frame is kept away from the one end of supporting part is equipped with the third transmission screw, the third transmission screw with compressing tightly subassembly transmission connection.

Through adopting above-mentioned technical scheme, the support frame passes through the second mounting hole realization and is connected with the transmission of second lead screw, and the sliding fit of second slide rail and second spout makes the support frame follow transverse adjustment mechanism direction and stably slide on the carriage, and the supporting part is used for supporting the bent axle main journal, and the third transmission screw is connected with compressing tightly the subassembly transmission, has realized the accurate support and the compression of bent axle main journal, ensures the stability and the precision of bent axle position in the course of working.

Optionally, the support portion is provided with a first V-shaped groove for supporting a main journal of the crankshaft.

Through adopting above-mentioned technical scheme, the first V type groove can support the bent axle main journal better for the bent axle keeps stable in the course of working, improves machining precision.

Optionally, the compressing assembly includes compressing tightly piece, fixed mounting be in be used for right compressing tightly the guide post that the piece was led on the support frame, with compressing tightly the third lead screw that the piece rotated and was connected, the third lead screw with third transmission screw thread transmission is connected.

Through adopting above-mentioned technical scheme, compress tightly the piece and drive through third lead screw and third transmission screw thread drive, under the direction of guide post, realize the accurate compaction to the bent axle main journal, improve process stability.

Optionally, compress tightly one end and be equipped with the portion that compresses tightly, the other end be equipped with guide post sliding fit's guiding hole, the portion that compresses tightly is equipped with the second V type groove, the second V type groove with first V type groove opening sets up relatively.

Through adopting above-mentioned technical scheme, compress tightly the piece and lead on the guide post through the guiding hole, compress tightly the second V type groove of portion, the second V type groove sets up with the first V type groove opening of supporting part relatively, can effectively improve the centre gripping stability to the bent axle main journal, ensures the positioning accuracy of bent axle in the course of working to promote processingquality and efficiency.

In summary, the present application includes at least one of the following beneficial technical effects:

1. Through setting up vertical adjustment mechanism and horizontal adjustment mechanism, can accurate regulation bent axle connecting rod neck's position to improved the regulation precision and the flexibility of anchor clamps, help satisfying the processing needs of small batch and different sizes bent axle, help reducing bent axle processing manufacturing cost.

2. The longitudinal adjusting mechanism enables the sliding frame to accurately move along the first screw rod by rotating the first screw rod, and accurate clamping and positioning of main journals at two ends of the crankshaft along the radial direction of the crankshaft are achieved.

3. The transverse adjusting mechanism comprises a supporting component and a pressing component, the supporting component is arranged on the sliding frame, the pressing component is arranged on the supporting component, accurate adjustment and stable clamping of the crankshaft main journal in the transverse direction are realized, and the machining precision and stability are improved.

Drawings

Fig. 1 is a schematic structural diagram of a cylindrical grinder for crankshaft machining.

Fig. 2 is a schematic structural view of the clamping device and the crankshaft clamping assembly disclosed by the application.

Fig. 3 is a schematic structural view of the fixture device disclosed in the present application.

Fig. 4 is a schematic structural view of a fixture seat disclosed in the present application.

Fig. 5 is a schematic view of the bottom view of the sliding frame disclosed in the present application.

Fig. 6 is a schematic diagram of the top view of the disclosed carriage.

Fig. 7 is a schematic structural view of a support frame according to the present disclosure.

Fig. 8 is a schematic structural view of a compressing member according to the present disclosure.

Reference numerals illustrate:

1. Lathe bed, 2, grinding wheel device, 21, grinding wheel carrier, 22, grinding wheel, 3, workbench, 31, headstock, 311, main chuck, 312, driving motor, 32, auxiliary axle box, 321, auxiliary chuck, 4, clamp device, 41, longitudinal adjusting mechanism, 411, clamp seat, 4111, clamping part, 4112, first slide rail, 4113, first mounting hole, 412, first screw rod, 413, slide frame, 4131, first transmission screw hole, 4132, first slide groove, 4133, second slide groove, 4134, second transmission screw hole, 414, adjusting handle, 42, transverse adjusting mechanism, 421, supporting component, 4211, supporting frame, 42111, second mounting hole, 42112, second slide rail, 42113, supporting part, 42114, third transmission screw hole, 4212, second screw rod, 422, pressing component, 4221, pressing part, 42211, pressing part, 42212, guiding hole, 22, guiding post, 4223, third screw rod, 100, crankshaft, 101, main shaft neck, 102 and connecting rod.

Detailed Description

The present application is described in further detail below in conjunction with fig. 1-8.

The embodiment of the application discloses a cylindrical grinding machine for crankshaft machining.

Referring to fig. 1 and 2, a cylindrical grinder for machining a crankshaft comprises a lathe bed 1, a grinding wheel device 2 and a workbench 3, wherein the grinding wheel device 2 comprises a grinding wheel frame 21 and a grinding wheel 22 rotatably arranged on the grinding wheel frame 21, a grinding wheel motor is further arranged on the grinding wheel frame 21, the grinding wheel motor drives the grinding wheel 22 to rotate so as to grind the crankshaft 100, the grinding wheel frame 21 can slide along the width direction of the lathe bed 1, the grinding wheel 22 moves towards or away from the main shaft of the crankshaft 100, in this way, the grinding wheel 22 can grind a connecting rod neck 102 on the crankshaft 100, the workbench 3 comprises a main shaft box 31 and a secondary shaft box 32, the main shaft box 31 comprises a main chuck 311 and a driving motor 312, the secondary shaft box 32 comprises a secondary chuck 321, the main shaft box 31 and the secondary shaft box 32 can slide along the length direction of the lathe bed 1, the driving motor 312 drives the main chuck 311 to rotate, the cylindrical grinder further comprises two clamp devices 4 respectively clamped on the main chuck 311 and the secondary chuck 321, the two clamp devices 4 are used for clamping main journals 101 at two ends of the crankshaft 100, the clamp devices 4 comprise a longitudinal adjusting mechanism 41 and a transverse adjusting mechanism 42, the longitudinal adjusting mechanism 41 is used for adjusting the crankshaft along the radial direction, the transverse adjusting mechanism 42 is used for adjusting the crankshaft along the radial direction perpendicular to the crankshaft, the transverse adjusting mechanism 42 is arranged on the longitudinal adjusting mechanism 41, the crankshaft processing cylindrical grinder can enable the crankshaft 100 to rotate and process by taking the axis of the connecting rod neck 102 as the rotation center through the adjustment of the longitudinal adjusting mechanism 41 and the transverse adjusting mechanism 42 of the two clamp devices 4, thereby enabling the grinding wheel device 2 to grind the connecting rod neck 102, not only improving the flexibility of processing the crankshaft 100, but also ensuring the accurate processing of the crankshaft 100 at different positions, meeting the production requirements of small batches of crankshafts 100 with different specifications, which helps to reduce the manufacturing costs of the crankshaft 100.

Referring to fig. 3 and 4, the longitudinal adjustment mechanism 41 includes a fixture seat 411, a first screw rod 412 and a sliding frame 413, the first screw rod 412 is rotatably disposed on the fixture seat 411, one end of the first screw rod 412 is provided with an adjustment handle 414, the sliding frame 413 is slidably disposed on the fixture seat 411, a first transmission screw hole 4131 is disposed on the sliding frame 413, the first transmission screw hole 4131 is in threaded transmission connection with the first screw rod 412, the adjustment handle 414 is transmitted, the sliding frame 413 is driven by the first screw rod 412 to slide on the fixture seat 411 through the first transmission screw hole 4131, so that the sliding frame 413 can be accurately adjusted along the first screw rod 412, and accurate clamping and positioning of the main journals 101 at two ends of the crankshaft 100 along the radial direction of the crankshaft 100 are realized.

Referring to fig. 4, a clamping portion 4111 for clamping a chuck of a workbench 3 is provided on one side of a clamp seat 411, the clamping portion 4111 in the embodiment of the application is rectangular, other embodiments of the application are round, the shape of the clamp seat 411 which facilitates reliable clamping of a main chuck 311 can be achieved, a first sliding rail 4112 which is in sliding fit with a sliding frame 413 is provided on one side of the clamp seat 411 which is far away from the clamping portion 4111, the first sliding rail 4112 in the embodiment of the application is a dovetail type sliding rail, other embodiments of the application are linear guide rails, first mounting holes 4113 which are in rotating fit with a first screw 412 are provided on two ends of the clamp seat 411 along the first sliding rail 4112, the clamping portion 4111 is provided on one side of the clamp seat 411 for clamping the chuck of the workbench 3, so that the chuck can stably clamp the clamp seat 411, the first sliding rail 4112 which is in sliding fit with the sliding frame 413 is provided on one side of the clamp seat 411, the first sliding rail 4112 is provided on two ends of the clamp seat 411 along the first sliding rail 4112, the first mounting holes 4113 which are in rotating fit with the first screw 412 are provided, and the first screw 412 is reliably mounted along the first sliding rail 4112, and the reliable rotation and the accurate adjustment of the first screw 41 is ensured.

Referring to fig. 5 and 6, a protruding portion is provided on one side of the sliding frame 413, a first transmission screw hole 4131 is provided on the protruding portion, a first sliding groove 4132 matched with the first sliding rail 4112 is provided on the same side of the protruding portion along the length direction, the first sliding groove 4132 is a dovetail groove in the embodiment of the present application, other embodiments of the present application are sliding blocks matched with the linear guide rail, a second sliding groove 4133 provided on one side of the sliding frame 413 away from the first sliding groove 4132 and provided with a transverse adjusting mechanism 42, the second sliding groove 4133 is also a dovetail groove, the second sliding groove 4133 is disposed perpendicular to the first sliding groove 4132, the sliding frame 413 is provided on the same side as the second sliding groove 4133 with a protruding portion, and a second transmission screw hole 4134 in transmission connection with the transverse adjusting mechanism 42 is provided on the protruding portion, the sliding frame 413 and the first sliding groove 4132 matched with the first sliding rail 4112 can slide stably along the longitudinal adjusting mechanism 41, meanwhile the second sliding groove 4133 is provided to enable the transverse adjusting mechanism 42 to be precisely adjusted perpendicular to the longitudinal adjusting mechanism 41, and the second transmission screw hole 4134 and the transverse adjusting mechanism 42 further enhance accuracy of the clamping position and stability of the main shaft 100.

Referring to fig. 3, the transverse adjusting mechanism 42 includes a supporting member 421 and a pressing member 422, the supporting member 421 and the pressing member 422 are used to clamp the main journal 101 of the crankshaft 100, the supporting member 421 is mounted on the carriage 413, the pressing member 422 is mounted on the supporting member 421, and the transverse adjusting mechanism 42 achieves precise adjustment and stable clamping of the main journal 101 of the crankshaft 100 in the transverse direction by mounting the supporting member 421 on the carriage 413 and the pressing member 422 is mounted on the supporting member 421, thereby improving machining accuracy and stability.

Referring to fig. 3, the supporting assembly 421 includes a supporting frame 4211 and a second screw rod 4212, the second screw rod 4212 is rotatably disposed on the supporting frame 4211, the second screw rod 4212 is in threaded transmission connection with a second transmission screw hole 4134, an adjusting handle 414 is also installed at one end of the second screw rod 4212, the pressing assembly 422 is installed on the supporting frame 4211, the supporting assembly 421 is in threaded transmission connection with the second transmission screw hole 4134 through the second screw rod 4212, accurate adjustment along the transverse direction is achieved, accurate positioning of the main journal 101 of the crankshaft 100 is ensured, and the pressing assembly 422 is installed on the supporting frame 4211, so that the main journal 101 of the crankshaft 100 can be effectively clamped, and stability in the machining process is ensured.

Referring to fig. 3 and 7, a supporting frame 4211 is provided with a second mounting hole 42111 rotationally connected with a second screw rod 4212, two sides of the second mounting hole 42111 are provided with second sliding rails 42112 in sliding fit with a second sliding groove 4133, one side of the supporting frame 4211 far away from the second mounting hole 42111 is provided with a supporting part 42113 for supporting a main journal 101 of the crankshaft 100, one end of the supporting frame 4211 far away from the supporting part 42113 is provided with an ear seat, a third transmission screw hole 42114 is arranged on the ear seat, the third transmission screw hole 42114 is in transmission connection with a compression assembly 422, the supporting frame 4211 is in transmission connection with the second screw rod 4212 through the second mounting hole 42111, the sliding fit of the second sliding rails 42112 and the second sliding groove 4133 enables the supporting frame 4211 to stably slide on the sliding frame 413 along the direction of the transverse adjusting mechanism 42, the supporting part 42113 is used for supporting the main journal 101 of the crankshaft 100, the third transmission screw hole 42114 is in transmission connection with the compression assembly 422, accurate supporting and compression of the main journal 101 of the crankshaft 100 are achieved, and stability and precision of the position of the crankshaft 100 in the processing are ensured.

Referring to fig. 7, the support part 42113 is provided with a first V-shaped groove for supporting the main journal 101 of the crankshaft 100, and the first V-shaped groove can better support the main journal 101 of the crankshaft 100, so that the crankshaft 100 is stable during processing, and processing accuracy is improved.

Referring to fig. 3, the compressing assembly 422 includes a compressing member 4221, a guide post 4222 and a third screw rod 4223, where the guide post 4222 is fixedly installed on the support frame 4211 and is used for guiding the compressing member 4221, one end of the third screw rod 4223 is rotationally connected with the compressing member 4221, the other end of the third screw rod 4223 is provided with an adjusting handle 414, and the third screw rod 4223 is in threaded transmission connection with the third transmission screw hole 42114, so as to implement accurate compression on the main journal 101 of the crankshaft 100 and improve processing stability.

Referring to fig. 8, a pressing part 42211 is disposed at one end of the pressing member 4221, a guide hole 42212 guiding on the guide post 4222 is disposed at the other end, a second V-shaped groove is disposed at the pressing part 42211, the second V-shaped groove is disposed opposite to the opening of the first V-shaped groove, the pressing member 4221 guides on the guide post 4222 through the guide hole 42212, a pressing part 42211 is disposed opposite to the first V-shaped groove of the supporting part 42113, and therefore the clamping stability of the main journal 101 of the crankshaft 100 can be effectively improved, the positioning accuracy of the crankshaft 100 in the processing process is ensured, and the processing quality and efficiency are improved.

A cylindrical grinding machine for machining a crankshaft comprises the steps of hanging a set of clamp devices 4 on a main chuck 311, enabling the main chuck 311 to clamp a clamping portion 4111 of a clamp seat 411, hanging another set of clamp devices 4 on a sub chuck 321, enabling the sub chuck 321 to clamp the clamping portion 4111 of the clamp seat 411, adjusting the distance between the main chuck 311 and the sub chuck 321 to be larger than the length of the crankshaft 100 to be machined, hanging the crankshaft 100 to be machined between the main chuck 311 and the sub chuck 321, moving the sub chuck 321 to be close to the main chuck 311, enabling main journals 101 at two ends of the crankshaft 100 to be supported on supporting portions 42113 of a supporting frame 4211, rotating the crankshaft 100 to enable the direction of the connecting rod journals 102 to be machined to be consistent with the adjusting direction of a longitudinal adjusting mechanism 41, rotating a third screw 4223 to enable a pressing portion 42211 to press the main journals 101 of the crankshaft 100, respectively adjusting a first screw 412 and a second screw 4212 to enable the axes of the connecting rod journals 102 to be machined of the crankshaft 100 to be coincident with the axes of the main chuck 311 and the sub chuck 321, starting a driving motor 312 to enable the crankshaft 100 to be hoisted to be machined to rotate around the axes of the connecting rod 102 to be machined, enabling the connecting rod 102 to be rotated around the axes to be machined, enabling the connecting rod 102 to be installed on the connecting rod to be 2 to be rotated, and the connecting rod to be adjusted to be 2 to be machined to be corresponding to the grinding wheel, and a grinding wheel to finish the grinding wheel, and a step of adjusting the grinding wheel 102 is completed, and after the grinding step is completed.

The above embodiments are not intended to limit the scope of the application in any way, so all equivalent changes according to the structure, shape and principle of the application are covered by the scope of the application.

Claims

1. The cylindrical grinding machine for machining the crankshaft comprises a machine body (1), a grinding wheel device (2) arranged on the machine body (1), and a workbench (3) capable of driving the crankshaft (100) to rotate and axially move along the crankshaft (100), and is characterized by further comprising two clamp devices (4) arranged on the workbench (3) and used for clamping main journals (101) at two ends of the crankshaft (100), wherein the clamp devices (4) comprise a longitudinal adjusting mechanism (41) used for adjusting along the radial direction of the crankshaft (100) and a transverse adjusting mechanism (42) used for adjusting along the radial direction perpendicular to the crankshaft (100), and the transverse adjusting mechanism (42) is arranged on the longitudinal adjusting mechanism (41).

2. The cylindrical grinding machine for machining crankshafts according to claim 1, wherein the longitudinal adjusting mechanism (41) comprises a clamp seat (411), a first screw rod (412) rotatably arranged on the clamp seat (411) and a sliding frame (413) slidably connected with the clamp seat (411), a first transmission screw hole (4131) is arranged on the sliding frame (413), and the first transmission screw hole (4131) is in threaded transmission connection with the first screw rod (412).

3. The cylindrical grinding machine for machining crankshafts according to claim 2, wherein a clamping portion (4111) for clamping a chuck of the workbench (3) is arranged on one side of the clamp seat (411), a first sliding rail (4112) which is in sliding fit with the sliding frame (413) is arranged on one side of the clamp seat (411) away from the clamping portion (4111), and first mounting holes (4113) which are in rotating fit with the first screw rod (412) are formed in two ends of the clamp seat (411) along the direction of the first sliding rail (4112).

4. A cylindrical grinding machine for machining crankshafts according to claim 3, wherein a first sliding groove (4132) matched with the first sliding rail (4112) is formed in one side, close to the first transmission screw hole (4131), of the sliding frame (413), a second sliding groove (4133) for installing the transverse adjusting mechanism (42) is formed in one side, far away from the first sliding groove (4132), of the sliding frame (413), the second sliding groove (4133) is perpendicular to the first sliding groove (4132), and a second transmission screw hole (4134) in transmission connection with the transverse adjusting mechanism (42) is formed in one side, close to the second sliding groove (4133), of the sliding frame (413).

5. A cylindrical grinding machine for machining crankshafts as claimed in claim 4, wherein said transverse adjusting mechanism (42) comprises a support assembly (421) for clamping a main journal (101) of a crankshaft (100) and a pressing assembly (422), said support assembly (421) being mounted on said carriage (413), said pressing assembly (422) being mounted on said support assembly (421).

6. The cylindrical grinding machine for machining crankshafts according to claim 5, wherein the supporting component (421) comprises a supporting frame (4211), a second screw rod (4212) rotatably arranged on the supporting frame (4211), the second screw rod (4212) is in threaded transmission connection with the second transmission screw hole (4134), and the compressing component (422) is mounted on the supporting frame (4211).

7. The cylindrical grinding machine for machining crankshafts according to claim 6, wherein the supporting frame (4211) is provided with a second mounting hole (42111) rotationally connected with the second screw rod (4212), two sides of the second mounting hole (42111) are provided with second sliding rails (42112) in sliding fit with the second sliding grooves (4133), one side, away from the second mounting hole (42111), of the supporting frame (4211) is provided with a supporting portion (42113) for supporting a main journal (101) of a crankshaft (100), one end, away from the supporting portion (42113), of the supporting frame (4211) is provided with a third transmission screw hole (42114), and the third transmission screw hole (42114) is in transmission connection with the pressing assembly (422).

8. The cylindrical grinding machine for machining crankshafts according to claim 7, wherein the supporting portion (42113) is provided with a first V-shaped groove for supporting a main journal (101) of the crankshaft (100).

9. The cylindrical grinding machine for machining crankshafts according to claim 8, wherein the pressing assembly (422) comprises a pressing member (4221), a guide post (4222) fixedly mounted on the supporting frame (4211) for guiding the pressing member (4221), and a third screw rod (4223) rotatably connected to the pressing member (4221), wherein the third screw rod (4223) is in threaded transmission connection with the third transmission screw hole (42114).

10. The cylindrical grinding machine for machining crankshafts according to claim 9, wherein the pressing member (4221) has a pressing portion (42211) at one end and a guide hole (42212) slidably fitted with the guide post (4222) at the other end, and the pressing portion (42211) has a second V-shaped groove provided opposite to the opening of the first V-shaped groove.